U.S. patent application number 10/328451 was filed with the patent office on 2003-10-30 for satellite based data transfer and delivery system.
Invention is credited to Beaudry, Bennett, Bergstrom, Chad Scott, Chuprun, Jeffery Scott, Tarver, Byron.
Application Number | 20030203717 10/328451 |
Document ID | / |
Family ID | 22071753 |
Filed Date | 2003-10-30 |
United States Patent
Application |
20030203717 |
Kind Code |
A1 |
Chuprun, Jeffery Scott ; et
al. |
October 30, 2003 |
Satellite based data transfer and delivery system
Abstract
A high speed data transfer system includes a WAU (201) which is
utilized to provide high speed data access to satellite transferred
data. The system is configured such that a plurality of data
utilization devices (205) may access the high speed data via
wireless links to the WAU (201). Advantageously, high speed data
services may be provided to users without the users requiring
individual satellite antennas.
Inventors: |
Chuprun, Jeffery Scott;
(Scottsdale, AZ) ; Bergstrom, Chad Scott;
(Chandler, AZ) ; Tarver, Byron; (Chandler, AZ)
; Beaudry, Bennett; (Scottsdale, AZ) |
Correspondence
Address: |
JENNER & BLOCK, LLC
ONE IBM PLAZA
CHICAGO
IL
60611
US
|
Family ID: |
22071753 |
Appl. No.: |
10/328451 |
Filed: |
January 14, 2003 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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10328451 |
Jan 14, 2003 |
|
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09066794 |
Apr 27, 1998 |
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Current U.S.
Class: |
455/12.1 ;
455/13.1 |
Current CPC
Class: |
G06K 13/0825 20130101;
H04B 7/18591 20130101; H04B 7/1858 20130101 |
Class at
Publication: |
455/12.1 ;
455/13.1 |
International
Class: |
H04B 007/185 |
Claims
What is claimed is:
1. A communications system comprising: a plurality of data
utilization devices distributed within a first service area, each
of said data utilization devices being coupled to a device
transceiver for providing wireless communication with an exterior
environment; and a wireless access unit (WAU), located within said
first service area, including: a satellite communication
transceiver subsystem having a satellite transceiver for
communicating with a satellite via a first wireless channel; and a
WAU transceiver subsystem for communicating, via a second wireless
channel, with a selected data utilization device in said plurality
of data utilization devices; wherein said WAU transceiver subsystem
is coupled to said satellite communication transceiver subsystem
for enabling communication therebetween.
2. The communications system, as claimed in claim 1, wherein said
WAU further comprises: an infrastructure interface for providing a
connection between said WAU and at least one non-satellite
communications service, wherein said infrastructure interface is
coupled to said WAU transceiver subsystem for communication with
said selected data utilization device.
3. The communications system, as claimed in claim 2, wherein: said
at least one non-satellite communications service includes a wired
communications service.
4. The communications system, as claimed in claim 3, wherein: said
wired communications service includes at least one of the
following: a public switched telephone network, an integrated
services digital network, a cable television network, a fiber optic
communication network, and a local area network.
5. The communications system, as claimed in claim 2, wherein: said
at least one non-satellite communications service includes a
cellular telephone system.
6. The communications system, as claimed in claim 2, wherein: said
at least one non-satellite communications service includes a
microwave link.
7. The communications system, as claimed in claim 2, wherein: said
at least one non-satellite communications service includes a
terrestrial wireless communications system.
8. The communications system, as claimed in claim 1, further
comprising: a protocol transformation processor, coupled to said
WAU transceiver subsystem, for transforming data between a first
communication protocol supported by said satellite and a second
communication protocol, that is different from said first
communication protocol, supported by said selected data utilization
device, wherein said second communication protocol varies based
upon which of said plurality of data utilization devices is
selected.
9. The communications system, as claimed in claim 1, wherein: said
plurality of data utilization devices includes at least one
personal computer having a central processing unit (CPU), a random
access memory (RAM) coupled to said CPU, and a mass storage means,
wherein said CPU is capable of executing programs residing in said
RAM.
10. The communications system, as claimed in claim 9, wherein: said
mass storage means includes means for providing program files
supporting various communications services available from said
WAU.
11. The communications system, as claimed in claim 10, wherein:
said personal computer includes means for selectively transferring
program files from said mass storage means to said RAM based on a
desired communications service.
12. The communications system, as claimed in claim 10, wherein:
said mass storage means includes means for accepting a removable
storage medium, wherein a first storage medium having a first set
of program files can be replaced with a second storage medium
having a second set of program files.
13. The communications system, as claimed in claim 12, wherein:
said removable storage medium includes at least one of the
following: a floppy disk and a CD ROM disk.
14. The communications system, as claimed in claim 10, wherein:
said personal computer includes means for receiving additional
program files from a wireless channel.
15. The communications system, as claimed in claim 1, wherein: said
plurality of data utilization devices includes at least one radio
frequency tag.
16. The communications system, as claimed in claim 1, wherein: said
plurality of data utilization devices includes at least one device
capable of performing a remote sensor function.
17. The communications system, as claimed in claim 16, wherein:
said at least one device includes a sensor for sensing at least one
of the following: electrical power usage, fuel usage, and waste
production.
18. The communications system, as claimed in claim 16, wherein:
said at least one device includes means for determining a location
of said at least one device.
19. The communications system, as claimed in claim 16, wherein:
said at least one device includes means for determining a
velocity.
20. The communications system, as claimed in claim 16, wherein:
said at least one device includes means for tracking an
inventory.
21. The communications system, as claimed in claim 1, wherein: at
least one of said plurality of data utilization devices is located
in a private residence for providing high data rate services to
said private residence.
22. The communications system, as claimed in claim 21, wherein:
said high data rate services include high-definition television
(HDTV) services.
23. The communications system, as claimed in claim 1, wherein: at
least one of said plurality of data utilization devices is located
in a medical establishment for use in providing high data rate
medical data services.
24. The communications system, as claimed in claim 1, wherein: at
least one of said plurality of data utilization devices is located
in an educational establishment for use in providing high data rate
educational data services.
25. The communications system, as claimed in claim 1, wherein: at
least one of said plurality of data utilization devices is located
in an industrial establishment for use in providing high data rate
industrial data services.
26. The communications system, as claimed in claim 1, wherein: at
least one of said plurality of data utilization devices is located
in an entertainment establishment for use in providing high data
rate entertainment data services.
27. The communications system, as claimed in claim 1, wherein: at
least one of said plurality of data utilization devices is located
in a commercial retail establishment for use in providing high data
rate commercial data services.
28. The communications system, as claimed in claim 1, wherein: at
least one of said plurality of data utilization devices is located
in a vehicle for providing high data rate mobile data services.
29. The communications system, as claimed in claim 1, wherein: said
WAU is mounted on a pole within said first service area.
30. The communications system, as claimed in claim 1, wherein: said
WAU is mobile within said first service area.
31. The communications system, as claimed in claim 30, wherein:
said WAU is located on an aircraft traveling through said first
service area.
32. The communications system, as claimed in claim 30, wherein:
said WAU is located on one of the following: an automobile, a
truck, a train, and a ship.
33. The communications system, as claimed in claim 1, further
comprising: a modem distribution processor, coupled to said WAU
transceiver subsystem, for determining a first modulation format
for use in communicating with said selected data utilization
device.
34. The communications system, as claimed in claim 33, wherein:
said modem distribution processor is remotely programmable.
35. The communications system, as claimed in claim 33, wherein:
said modem distribution processor has access to a plurality of
modem modules, each modem module being operative for generating
data having a particular modulation format, wherein said modem
distribution processor selects a modem module from said plurality
of modem modules based on said first modulation format.
36. The communications system, as claimed in claim 1, further
comprising a memory for storing a plurality of user profiles.
37. The communications system, as claimed in claim 36, wherein:
said memory includes a user profile corresponding to at least one
of said plurality of data utilization devices.
38. The communications system, as claimed in claim 1, wherein: said
WAU transceiver subsystem includes multiple channels for supporting
multiple external connections simultaneously.
39. The communications system, as claimed in claim 1, wherein: said
WAU transceiver subsystem includes means for performing spread
spectrum communications.
40. The communications system, as claimed in claim 39, wherein:
said means for performing spread spectrum communications includes
means for performing hybrid spread spectrum modulation.
41. The communications system, as claimed in claim 40, wherein:
said means for performing hybrid spread spectrum modulation
includes means for performing both frequency hopping and direct
sequence spread spectrum modulation on a signal.
42. The communications system, as claimed in claim 41, wherein:
said means for performing hybrid spread spectrum modulation
includes means for adjusting frequency hopping processing gain.
43. The communications system, as claimed in claim 41, wherein:
said means for performing hybrid spread spectrum modulation
includes means for adjusting direct sequence spread spectrum
processing gain.
44. The communications system, as claimed in claim 41, wherein:
said means for performing hybrid spread spectrum modulation
includes means for adjusting both frequency hopping processing gain
and direct sequence spread spectrum processing gain.
45. The communications system, as claimed in claim 1, further
comprising: a processor, coupled to said WAU transceiver subsystem,
for use in identifying unused radio frequency spectrum in said
second wireless channel and for selecting at least one operational
frequency for said WAU transceiver subsystem in accordance
therewith.
46. The communications system, as claimed in claim 1, wherein: said
WAU includes means for providing automatic network affiliation of
data utilization devices.
47. The communications system, as claimed in claim 1, wherein: said
WAU includes means for providing automatic network removal of data
utilization devices.
48. The communications system, as claimed in claim 1, wherein said
WAU includes an expert agent function.
49. The communications system, as claimed in claim 1, wherein said
WAU includes an internet protocol gateway.
50. The communications system, as claimed in claim 1, wherein: said
plurality of data utilization devices includes at least one
peer-to-peer link between data utilization devices.
51. The communications system, as claimed in claim 1, wherein: said
satellite communication transceiver subsystem includes a satellite
antenna for coupling signals between said satellite transceiver and
said first wireless channel.
52. The communications system, as claimed in claim 51, wherein:
said satellite antenna includes a phased array antenna.
53. The communications system, as claimed in claim 1, wherein: said
WAU includes a peer-to-peer antenna for use in communicating with
at least one other WAU.
54. The communications system, as claimed in claim 1, wherein: said
WAU includes an encryption processor for use in
encrypting/decrypting communications signals transferred between
said WAU and said selected data utilization device.
55. The communications system, as claimed in claim 1, wherein: said
WAU includes a spectrum scanning processor for use in monitoring a
spectral environment in said second wireless channel.
56. The communications system, as claimed in claim 55, wherein:
said WAU includes means for generating a transmit signal based on
said spectral environment in said second wireless channel.
57. The communications system, as claimed in claim 1, wherein: said
WAU includes means for suppressing interference components in
signals received from said second wireless channel.
58. The communications system, as claimed in claim 1, wherein: said
communications system operates as an overlay on at least one other
communications system having an overlapping operational frequency
range.
59. The communications system, as claimed in claim 1, wherein: said
WAU includes means for performing a bridging function between a
plurality of external systems.
60. A communications system comprising: a plurality of data
utilization devices distributed within a first service area, each
of said data utilization devices being coupled to a device
transceiver for providing wireless communication with an exterior
environment; and a wireless access unit (WAU), located within said
first service area, including: a wireless communication transceiver
subsystem having a wireless transceiver coupled to an antenna for
communicating with an external communications platform via a first
wireless channel, wherein said external communications platform is
capable of providing a plurality of high data rate communications
services to said WAU; and a WAU transceiver subsystem for
communicating, via a second wireless channel, with a selected data
utilization device in said plurality of data utilization devices;
wherein said WAU transceiver subsystem is coupled to said wireless
communication transceiver subsystem for enabling communication
between said WAU transceiver subsystem and said wireless
communication transceiver subsystem.
61. The communications system, as claimed in claim 60, wherein said
communications platform is mobile.
62. The communications system, as claimed in claim 60, wherein said
communications platform is located on an aircraft.
63. The communications system, as claimed in claim 60, wherein said
communications platform is mounted to a structure within said first
service area.
64. The communications system, as claimed in claim 60, wherein said
communications platform includes a cellular telephone system.
65. A wireless access unit (WAU) for use in a wireless
communications system having a plurality of data utilization
devices located within a first service area, said WAU comprising: a
satellite communication transceiver subsystem for communicating
with a satellite via a first wireless channel; a WAU transceiver
subsystem for communicating, via a second wireless channel, with a
selected data utilization device in the plurality of data
utilization devices, wherein said WAU transceiver subsystem is
coupled to said satellite communication transceiver subsystem for
enabling communication therebetween; and a chassis supporting both
said satellite communication transceiver subsystem and said WAU
transceiver subsystem, wherein said chassis is adapted for mounting
within said first service area.
66. The WAU, as claimed in claim 65, wherein: said chassis includes
means for use in mounting said WAU to a pole.
67. The WAU, as claimed in claim 65, wherein: said chassis includes
means for use in mounting said WAU to a building.
68. The WAU, as claimed in claim 65, wherein: said WAU has a size
and weight that allows said WAU to be mounted within said first
service area by a single installer.
69. The WAU, as claimed in claim 65, further comprising: an
infrastructure interface for providing a connection between said
WAU and at least one wired communications service, wherein said
infrastructure interface is coupled to said WAU transceiver
subsystem for communication with said selected data utilization
device.
70. A subscriber interface module (SIM) for use with a personal
computer to provide high data rate wireless communications between
said personal computer and a wireless access unit (WAU) mounted
within a first service area, said WAU including a satellite
communication transceiver subsystem for communicating with a
satellite, said SIM comprising: a receiver for use in processing a
high data rate signal received from a first wireless communications
channel; a transmitter for generating a high data rate transmit
signal for delivery to said first wireless communications channel;
antenna connection means for connecting to at least one antenna for
interfacing with said first communications channel; and a housing
supporting said receiver, transmitter, and at least one antenna
port, said housing having attachment means for coupling said SIM to
the personal computer, said attachment means including means for
coupling high data rate signals between said SIM and the personal
computer.
71. The SIM, as claimed in claim 70, wherein: said attachment means
includes means for insertion into a PCMCIA port on the personal
computer.
72. The SIM, as claimed in claim 70, wherein: said attachment means
includes means for insertion into a standard expansion slot on the
personal computer.
73. The SIM, as claimed in claim 70, further comprising: means for
executing commands received from said personal computer.
74. The SIM, as claimed in claim 70, further comprising: means for
configuring at least one of said transmitter and said receiver
based on configuration information received from said personal
computer.
75. The SIM, as claimed in claim 70, wherein: said high data rate
signal has a data rate equal to or exceeding 400 kbps.
Description
FIELD OF THE INVENTION
[0001] This invention relates to bi-directional communication
systems and methods, and in particular, to an integrated satellite
based data communication system.
BACKGROUND OF THE INVENTION
[0002] Business, retail, medical, university, transportation center
and residential customers have a need for high data rate media
transfer systems that link or interface to data utilization
devices, such as personal computers (PCs) and workstations. As used
herein, PCs will be understood to include personal computers,
workstations and other similar data acquisition and/or origination
terminals. A need exists for providing low cost wireless and wired
high data rate/low delay information exchange to customer data
utilization devices. Currently, no wireless high data rate
bi-directional service exists between consumers, satellites, and
wireline services. One problem with existing terrestrial systems is
that the data transfer rate is relatively slow or alternatively is
expensive. With current methods, data transfer is typically slow,
resulting in long data-download times. Furthermore, real-time, high
fidelity audio/video is often impractical given the current
state-of-the-art. To provide high data rate capability to all
potential users requires a high cost in capital equipment and
assets or fixed-site operation to provide a system with widespread
accessibility. So called "wireless" systems can provide significant
high data rate transfers and widespread accessibility. However, no
system presently exists incorporating inexpensive wireless transfer
of satellite, terrestrial backbones, cellular data services, and
wireline data which will provide economic access to such wireless
and wired data sources. It is also desirable to provide for
accessing information by wireless methods thereby providing freedom
of movement for users and elimination of the cost of wired
infrastructure.
[0003] Satellite based systems are under construction or are
proposed which will make high data rate/low delay information
transfer widely available. However, as presently planned or
proposed such satellite systems require an expensive satellite
transceiver and directional antenna at each user. What is needed
are low cost software configurable satellite interfaces that
leverage existing consumer equipment (e.g., laptop, palmtop, and
desktop computers). For instance, at least one proposed system
requires that each business and each residence have a stationary
direct satellite link for the exchange of high speed data including
multimedia data. In addition, there are many terrestrial data
sources or sites with which it is desirable to have high speed data
access. Such sites vary in the number of data consumers over the
course of time. Hence, data demand can vary as customers enter or
leave service areas. Therefore, it is further desirable to provide
a system which will permit mobile access to high speed data sources
and not have high associated costs as are required for existing
data transfer systems and apparatus. It is also desirable that
these data services provide self forming network services,
depending upon spatial proximity of mobile users and data and
bandwidth demands of stationary customers. Further, data
information sources each use specific protocols for data routing
transfer, packetizing, and switching. Therefore, there is a further
need for a wireless interface to multiple data sources that
provides a seamless, transparent interface between user and data
service.
BRIEF DESCRIPTION OF THE DRAWING
[0004] The invention will be better understood from a reading of
the following detailed description in conjunction with the drawing
figures in which like reference designators are use to identify
like elements, and in which:
[0005] FIG. 1 is an overall system diagram of a system in
accordance with the principles of the invention;
[0006] FIG. 2 illustrates a portion of the system of FIG. 1 in
greater detail;
[0007] FIG. 3 is a block diagram of a subsystem utilized in the
system portion of FIG. 2;
[0008] FIG. 4 illustrates different payload data which are utilized
in the system of FIG. 1;
[0009] FIG. 5 is a system block diagram illustrating the access of
a number of subscribers to the subsystem of FIG. 3;
[0010] FIG. 6 illustrates a data frame structure utilized in the
system of FIG. 1;
[0011] FIG. 7 is a joint time-frequency diagram illustrating
dynamic allocation of unused and/or underused spectrum;
[0012] FIG. 8 is a block diagram illustrating a system having a
spectrum scanning mode in accordance with one embodiment of the
present invention;
[0013] FIG. 9 is a spectrum diagram illustrating a possible
spectrum for a system implementing a frequency hopping/direct
sequence spread spectrum approach in accordance with one embodiment
of the present invention; and
[0014] FIG. 10 is a block diagram illustrating a communications
system utilizing a frequency hopping/direct sequence spread
spectrum approach in accordance with one embodiment of the present
invention.
DETAILED DESCRIPTION
[0015] In accordance with the principles of the invention, a system
is provided in which high data rate, low delay wireless data
communication is provided to pluralities of users. Each plurality
of users is served from a single, central wireless access unit
(WAU). The WAU, in accordance with the invention, provides
centralized wireless access for a plurality of users to satellite
data communications and in addition, provides access to other high
data rate services which may be wireless or wired. The invention
advantageously provides for wireless communication between each
data utilization device or PC and the WAU thereby permitting users
to access the high data rate, low delay data from substantially any
location within the range of the WAU. Thus, a system in accordance
with the invention provides that a plurality of users may access
satellite transferred data and wired data services, via one or more
WAU devices, thereby allowing wireless bi-directional interchange
of data. In a system in accordance with the invention, a plurality
of users of high data rate, low delay wireless data access a
proximity WAU which in turn accesses a satellite link or another
WAU, or one or more of a number of wired and wireless services
available within proximity of the WAU. In addition to independent
access to one or more WAU devices, each user may also transfer data
in a distributed peer-to-peer fashion.
[0016] In accordance with the principles of the invention, a
Wireless Information Technology System (WITS) is provided which
interfaces to multiple information sources and extends these
services via wireless links, to users while providing self-forming
network adaptability, frequency adaptability, modulation
adaptability, interference suppression adaptability, overlay
adaptability, and bandwidth adaptability. The system performs a
seamless protocol transformation of subscriber data, providing a
near transparent interface between consumer and desired information
sources. A system in accordance with the principles of the
invention provides for high data rate wireless information exchange
to a plurality of users from a satellite antenna and associated
satellite communication system, other terrestrial wireless systems
or wired bi-directional data systems and sources. As used herein,
the term "high data rate" is typically used to refer to data rates
exceeding, for example, 400 kilobits per second (kbps).
[0017] In accordance with a further aspect of the invention, the
WAU provides the ability to access information by wireless methods,
thereby providing freedom of movement for users and elimination of
the cost of a wired infrastructure between each user and the data
communication services. By permitting wireless access between each
PC and the WAU, a plurality of users located within wireless range
of the WAU can access the high speed satellite, terrestrial
microwave and cellular data services via the WAU. Access to
multiple information sources and extension of these services via
wireless links to the PC users is possible with the system in
accordance with the invention. Each WAU and its associated users
forms a cell within which users have wireless access to data
services via the WAU. Since users can be mobile, one embodiment of
the invention includes self-forming network adaptability whereby
mobile nodes are "affiliated" with a nearby WAU automatically. As
users move into other WAU cells, the cells perform handoff and
affiliation functions for seamless data access. Advantageously, a
single WITS WAU satellite transceiver microwave and cellular data
subsystem or interface can service multiple users whether the users
are mobile or stationary. In addition, wired services may be
provided to those same users without the expense or difficulty of
providing a wired connection to each user.
[0018] Turning now to FIG. 1, a system in accordance with the
invention is shown. The system includes one or more satellites 101
which are part of a constellation of satellites. The constellation
may be any one of several satellite constellations, such as a
constellation of low earth orbit (LEO) satellites or of high earth
orbit (HEO) satellites, which includes middle earth orbit (MEO) and
geosynchronous earth orbit (GEO) satellites, or a constellation
comprising both LEO and HEO satellites such as in the Celestri.TM.
system developed by the assignee of the present invention.
Satellite, or platform, 101 may have an intersatellite link (ISL),
or interplatform link, 102 to one or more additional satellites
101a which forms part of a satellite constellation. Satellite 101
also has satellite links 110 to a ground antenna 111 which is
coupled to optional gateway 104. Gateway 104 may be a satellite
gateway of a type well known to those skilled in the art to provide
access to various information sources, such as IP or PSTN/ISDN, for
example.
[0019] Satellite 101 may be accessed by a plurality of cells 103
that performs seamless protocol transformation and multi-port
distribution to a plurality of users 105. Although only six cells
103 are shown, it should be appreciated that a larger or smaller
number of terrestrial cells may be accessible by the satellite
constellation. What is needed are cell-specific applications,
whereby each cell will have a different type of data service
tailored to the user requirements of each cell population. For
example, medical campus requirements will use the invention for
data transfer services that include: patient records, outpatient
data, X-rays, CAT scans, MRI scans, provider consult data,
insurance data links, transcription data, telemedicine services,
billing, medical order transfer, medical research, and real time
audiovisual medivac data. University campus services can use the
invention for: records maintenance (e.g., transcripts, billing,
etc.), library access, internet access, virtual professorships,
research, remote audiovisual class attendance, inter campus
housing, and inter university LANs. Neighborhood applications for
the invention include: DSS delivery, movies on demand, internet
access, telephony services, video telephone services,
high-definition television (HDTV) services, real time on-demand CD
audio, home shopping, home banking, profile based information
delivery, and remote home environment management. Industrial campus
applications of the invention include: wireless LANs, shop assembly
and parts coordination, paging services, inventory control and RF
tag services, telecommuting services, and remote sensor
applications for electric, oil, gas, water, and other similar
utilities. Commercial and retail campus services provided by the
invention include: billing services, real time inventory control,
real time shopping services, advertisement applications, real time
delivery tracking, audiovisual customer service, reservation
services, staff management and tracking, and security applications.
Mobile applications of the invention include: vehicle tracking,
real time location information, real time map delivery, and high
speed passenger internet access.
[0020] For any data service provided by the invention, custom
software will be provided to an individual user via disks 210 or
directly over the high speed wireless link, once subscription
confirmation has been received. This software will provide user
access to the type of data desired. Hence, data utilization device
205 is understood to be a general purpose, software configurable
appliance which is uniquely and dynamically tailored to user data
requirements and cell populations. Each cell 103 has a WAU 201 and
a corresponding group of users 105. Accordingly, each of the users
105 are able to communicate with satellite 101, or other high data
rate services that are processed through gateway 104, by
transferring data to and from WAU 201. This avoids the need for
each user 105 to communicate directly with satellite 101, which
would require a separate high cost transceiver and associated
satellite antenna with proper placement for satellite
visibility.
[0021] Turning now to FIG. 2, a portion of one of the cells 103 is
shown in greater detail. Each cell 103 includes a satellite antenna
200 coupled to a WITS WAU 201. The WITS WAU 201 typically includes
a transceiver for transferring information between WAU 201 and the
users associated with the cell 103, as will be described in more
detail when discussing FIG. 3. WITS WAU 201 is preferably located
at a high point in the cell region, such as on top of a utility
pole, an antenna tower, or on top of a building. In general, it is
desirable to mount the WAU 201 to a preexisting structure within
the 103 to reduce WITS implementation costs. In one embodiment of
the invention, the WAU 201 is implemented in a relatively compact,
lightweight package that can be easily mounted by a single
installer. The package can include, for example, a clamp for
fastening the WAU 201 to a pole or other structure. In addition to
providing ease of installation, the compact, lightweight package
also facilitates maintenance of the WAU 201. That is, the WAU 201
may be easily removed for periodic servicing and/or
replacement.
[0022] The position of WAU 201 within the cell 103 is a factor in
determining the area or range of operation in which users may
access WAU 201. In general, the higher the WAU 201 is mounted
within the cell, the greater the possible range of coverage. In one
approach, relatively small cells having relatively few users per
cell are used. Using this approach, the WAU 201 can be mounted
lower in the cell 103, such as on the top of a street light post
210. In the preferred embodiment, the nominal range of each WAU 201
will be in excess of one mile.
[0023] High density dwelling conditions, such as in high rise
office and apartment buildings, typically prevent use of satellite
tracking antennas by each resident. The use of a WITS WAU 201 in
accordance with the invention addresses this limitation by allowing
users to access data from satellites via the WITS WAU 201 which is
located in a position for tracking and communicating with the
satellites. The satellite access antenna may be of dish type, or,
for more flexible satellite access, a phased array antenna.
[0024] Each user in the cell 103 typically has a data utilization
device 205 which, for example, can take the form of a personal
computer (PC) 203. WITS WAU 201 provides wireless access and
distribution of high speed data services from satellites, for
example, to a plurality of data utilization devices 205, typically
including PC units 203 in a high density complex, and eliminates
the need for wiring each building unit with satellite antenna
capability. In a preferred embodiment, WITS WAU 201 will also
incorporate an omnidirectional antenna for data transfer to/from
user terminals, although other antenna configurations may also be
appropriate.
[0025] Each PC 203 is a platform that accepts software files
designed to program and interact with a subscriber interface module
(SIM) 204. SIM 204 may take the form of, or be included within, a
PCMCIA type card. In an alternate embodiment, SIM 204 may be a
separate portable device that connects using a PCMCIA bus slot of
PC 203. SIM 204 includes a transceiver 207 to provide the wireless
connection to WITS WAU 201 for data services. SIM 204 includes (or
can be connected to) an antenna 206 of conventional design for the
frequency band of interest and desired polarization (e.g., circular
polarization) or sectored antennas. Transceiver 207 performs all
modulation and demodulation functions for transmit and receive
communications to the WITS WAU 201. In this regard, SIM 204 can, in
one embodiment, receive commands and/or configuration data from the
PC 203 for use in processing any of a number of different
waveforms.
[0026] In the illustrated embodiment of the invention, data
transfers between the WITS WAU 201 and transceiver 207 provide
minimum interference to existing terrestrial voice and data
services by utilizing spread spectrum transmission and/or by
utilizing portions of the spectrum that are not currently occupied.
Accordingly, in a preferred embodiment, transceiver 207 is a spread
spectrum transceiver or high data rate transceiver, both with
multiple access capability.
[0027] PC 203 may also include drive 208 for receiving one or more
disks 210 having specific wireless application software stored
thereon. This allows the PC 203 to be upgraded to higher capacity
and more bandwidth efficient waveforms. In addition to
link-specific software, drive 208 and disks 210 also provide
functionality specific to the type of data service being utilized
by the consumer.
[0028] Turning now to FIG. 3, WITS WAU 201 is shown in block
diagram form. WITS WAU 201 includes a satellite antenna 200 coupled
to a satellite communication (satcom) transceiver subsystem 303.
Satellite antenna 200 may be a dish type, or, for more flexible
satellite access, a phased array antenna. Satcom transceiver
subsystem 303 is coupled to a satcom wired infrastructure interface
305. Satcom wired infrastructure interface 305 can be coupled to
various wired data services available in the vicinity of WITS WAU
201 and which are collectively identified as wired services 212.
Wired services 212 may also be accessed via wireless WAU link 213,
which communicates with other WAU devices in a peer-to-peer
fashion. In this manner, only select WAU devices require wired
connections to wired services 212. Wireless WAU link 213 may be a
separate antenna, or, alternatively may be included in the
functionality of satellite antenna 200. As noted above, wired
services include, but are not limited to, ISDN, cable and fiber
optic accessible services. Satcom wired infrastructure interface
305 can also be coupled to various terrestrial wireless services
214. These services can include, but are not limited to,
terrestrial microwave links, cellular, and land mobile radio
services.
[0029] A seamless protocol transformation processor 307 is utilized
to provide for protocol transformations between data protocols
from: (i) satcom transceiver subsystem 303, (ii) wired services
212, (iii) terrestrial wireless services, (iv) terrestrial
microwave services, and (v) cellular/land mobile services and the
data protocols used to link to user PCs 203 with wireless
signals.
[0030] A wireless modem distribution processor (WDP) 309 is coupled
between protocol transformation processor 307 and RF modules 317
and 319 which are in turn coupled to antenna 321. A processor 325
is coupled via bus 323 to satcom wired infrastructure interface
305, seamless protocol transformation processor 307, wireless modem
distribution processor 309, and RF modules 317 and 319. Processor
325 includes associated memory which is not shown, but which is
familiar to those skilled in the art. As will also be understood by
those skilled in the art, although the block diagram of FIG. 3
illustrates various blocks, the individual blocks may be
implemented in either hardware or software and the bus structure
323, as well as the various connections between blocks, are
intended to indicate functional interconnection rather than to
indicate actual physical connections. The various processors
indicated in the drawing of WITS WAU 201 may be implemented in one
or more actual processors. Processor 325, as well as the other
processors indicated in the FIG. 3, if separately implemented, may
be a commercially available processor, such as microprocessors
available from Motorola, Inc., the assignee of the present
invention. This host processor and bus structure is capable of
sending status messages describing WAU utilization, node command,
spectral conflicts, special requests, and relative software
uploads, failures, need for network restart, and power loss. WITS
WAU 201 also included encryption processor 326 which provides
wireless transfer security.
[0031] Satellite antenna 200 is used to establish and maintain the
link to a satellite 101. Antenna 200 is coupled in conventional
fashion to the satcom transceiver subsystem 303. Satcom transceiver
303 is of conventional design and provides a high data rate
bi-directional link to satellite constellation 101 via antenna
200.
[0032] WITS WAU 201 is interfaced with wired services 212 via
satcom wired infrastructure interface 305 and wireless WAU link
213. Processor 325 includes selection capability to select a data
route via satellite, terrestrial microwave, cellular data, WAU
peer-to-peer, or the various wired services 212 based on cost,
information content, and delay profiles selected and transferred to
the WITS WAU 201 by means of automatic user node affiliation, and
maintained in WITS WAU memory. Alternatively, software in the WITS
WAU 201 can automatically select one service from multiple choices
based upon predetermined parameters or algorithms. The software can
also provide adaptive functionality for waveforms transmitted via
antenna 321 and wireless WAU link 213 including, but not limited
to, frequency, modulation and bandwidth.
[0033] WITS WAU 201 supports software configurable modem technology
that provides a family of wireless signals such as DSPN/CDMA,
QAM/TDMA, PSK/OFDM, FH/CDMA, and other wireless multiple access
techniques that are compatible with the local data utilization
devices. Further, various wireless interfaces may be provided
through the use of programmable modem modules 311, 313, 315, and
316. Modem modules 311-315 are typical examples of how WDP 309 may
be programmed (i.e., to support, for example, code division
multiple access (CDMA), time-division multiple access (TDMA), and
frequency division multiple access (FDMA)). It should be understood
that other wireless multiple access schemes are also possible as
needed. In a preferred embodiment, hybrid spread spectrum
modulation is used via hybrid SS module 316. In this preferred
embodiment, hybrid modulation includes both frequency hop (FR) and
direct sequence (DS) methods in order to minimize WITS service
impact on existing wireless services, while simultaneously reducing
the interference impact of these existing services on the
WITS-delivered data. FIG. 9 illustrates an example FH/DS hybrid
spectrum 300, including typical interference sources, such as
fading 302, pilot tone interference 304, noise interference 306,
and bauded co-channel interference 308. Each hop frequency fn is
spread over a corresponding channel consisting of bandwidth WsN,
for a total spreading bandwidth of Wt. Although four hopping bands
are shown in the FIG. 9, the actual number of hopping frequencies
will vary depending upon the environment and spectrum availability.
When operating near or below the ambient noise floor, spreading the
hop impulse in this manner results in a spectral distribution that
minimizes the WITS interference impact on existing wireless
services, while allowing for the application of interference
suppression algorithms at data utilization device 205. Since
spreading serves to improve interference immunity, reduced hop
bandwidths may be implemented to lower hop rates which are less
than the current state-of-the-art. These lower hop rates and
bandwidths will enable simplified transceiver implementations. Note
that when the DS processing gain is low, the FH/DS hybrid will
approach the pure FH system. Hence, in one embodiment, the
invention further includes the ability to adjust the hop bandwidths
and spreading sequences depending on the contiguous spectrum
availability and existing service density and sensitivity
requirements. Furthermore, since DSPN is applied primarily for the
purposes of impulse concealment and interference rejection
functionality, power control issues are less problematic. Hence, a
small number of spreading sequences may be used primarily to
prevent the damaging effects of hop collisions between sub-nets
(e.g., adjacent WITS cells).
[0034] FIG. 10 illustrates one embodiment of the FH/DS approach
showing a transmitter 310, a receiver 312, and corresponding
channel interference sources 314, 315. The figure shows in-phase
(I) and quadrature (Q) data being spread by a pseudo-noise (PN)
spreading sequence 316 and shifted via a hop sequence 318 and
direct digital synthesizer (DDS) prior to channel transmission. Any
modulation source may be used, for example, a QPSK source may be
implemented for the I,Q data stream with a sufficient DS processing
gain, for example, 24-33 dB. Note from the figure that the channel
interference sources include a fading component, H(s). Frequency
selective fades may be mitigated via adaptive signal processing.
For wideband interference sources and shadowing fades, channel
coding can provide sufficient gain to close the link, albeit at a
reduction in data throughput. Referring again to FIG. 10, note that
the receiver 312 tunes each WsN 340 corresponding to the hop
sequence 342, with timing given by t.sub.ref supplied by, for
example, stable oscillators or GPS data. The corrupted data is then
passed to an adaptation processor 320, which may be located on
either SIM 204 or data utilization device 205. In the preferred
embodiment of the invention, the adaptation processor 320 which
performs periodic state estimation 322, stores the state
information to interference state memory 324, and, in parallel,
performs interference countermeasures 326 corresponding to the
prior interference state. Following the adaptation processor 320,
the restored data is correlated 328 against the appropriate PN
sequence 330 for despreading, and demodulated 332, producing
estimates of the I and Q data streams. WITS WAU 201 also includes
one or more common software based WDPs 309 that supply programmable
data rates and waveform modes appropriate to communicate with data
utilization devices 205.
[0035] Satcom transceiver subsystem (STS) 303 has the capability to
acquire, track, demodulate, and maintain contact to LEO and HEO
satellites, and/or other platforms, which may include
Geosynchronous Earth Orbiting (GEO) satellite up/downlinks. STS 303
is of conventional design. Interface 305 comprises conventional
interfaces to STS 303, terrestrial microwave and cellular data
services, and to the ISDN, cable and fiber networks. By providing
connection to these services at WITS WAU 201, the data services
provided by these various high data rate services are provided to
all users of the WITS WAU 201 without the necessity of providing
connections directly from each satellite antenna or terrestrial
wireless systems to each individual user.
[0036] WITS WAU 201 may operate with a variety of service-dependent
protocols. Accordingly, to facilitate the flexibility of operating
with the various protocols, WITS WAU 201 includes a seamless
protocol transformation (SPT) processor 307 for providing a
seamless protocol transformation such that whatever signal protocol
is received from the sources coupled to interface 305 is
transformed to the proper data link layer format for wireless
transmission to the users 105 of WAU 201. SPT processor 307
receives a satcom, microwave, cellular, or wired signal from the
appropriate transceiver interfaces 305 and 307 and transforms it up
the open signaling interface (OSI) protocol stack layer to provide
a multiple access system that allows connectivity to many users.
SPT processor 307 performs bi-directional physical and upper layer
mapping and transformations to provide compatibility with the final
stage media transmission with appropriate mobile identification.
The functionality of SPT processor 307 includes ATM (asynchronous
transfer mode)-to-wireless, ISDN-to-wireless, Cable-to-wireless,
fiber optic-to-wireless, terrestrial wireless-to-wireless, and
other protocol transformations. SPT processor 307 provides
transformation between the WDP 309 and interface 305.
[0037] WDP 309 is a software configurable modem for providing a
family of wireless signals, such as frequency hop (FH)/CDMA,
DSPN/CDMA 311, QAM/TDMA 313, PSK/OFDM 315 and other multiple access
techniques. The various signals are utilized to provide modulation
signals information to a transceiver comprising RF modules 317, 319
which are operable in various modulation arrangements, such as
PSK-OFDM, SSPN, SSFH, and other high data rate modes. Spread
spectrum techniques allow operation in areas of the spectrum that
are already occupied by other systems, without interfering with the
other systems. Modulation formats are software selectable within
WITS WAU 201 and are remotely programmable as well as field
programmable.
[0038] FIG. 4 illustrates the operation of the SPT processor 307
with respect to a plurality of different payload data, whereby each
data payload has certain attributes associated therewith. For
example, data payload 401 includes data that is characteristic of
fiber optic data. SPT processor 307 provides the transformation
from the specific protocols associated with wired protocols 401,
403, 405, satcom payload 407, terrestrial microwave protocol 409,
cellular protocol 411, and wireless distribution protocol 413 to RF
modules 317 and 319. Subsequently, the information is transferred
to and from cell users 105.
[0039] WITS WAU 201 provides high data rate satellite signals and
information to its local area with minimum interference to existing
terrestrial voice and data services. WDP 309 and RF modules 317 and
319 facilitate spread spectrum signals, including for example,
frequency hopped signals, direct sequence signals, or hybrid
signals, whereby spread spectrum signal technology is utilized to
allow existing narrowband signals for cellular and land mobile
radio (LMR) traffic, among others, to occupy the same frequency
bands without impact on these services. Spread spectrum signals
support multiple access schemes to increase user density on each
channel and improve spectrum reuse. Spread spectrum signals are
especially effective in overcoming frequency selective fading,
common to urban mobile environments. A high data rate capability
facilitates transfer of video and other large files with low delay
to the end user.
[0040] Turning now to FIG. 5, the profiling capability of the WITS
WAU 201 is illustrated. Processor 325 of FIG. 3 provides for
storing, in memory, various user specific profiles 501-505 for each
user PC 203 (of FIG. 2) whereby PC 203 forwards this information to
WITS WAU 201. For each user registered with WITS WAU 201 a specific
user profile is established, whereby representative user profiles
501, 503 and 505 are shown in FIG. 5. Each user profile may, for
example, indicate the users wireless interface capability to the
WITS WAU (e.g., bandwidth allocation). Further, each user profile
may be used to identify the service to which the user subscribes as
well as providing cost limits on what the user is willing to pay
for service. Also, the user profile may include limits of the
hardware and limits on the data rates. Profile information can
include specifying information types, time of day or date-based
delivery, and the type of data services that the user would like to
receive. Profiles may also specify time delay limits on delivery.
Profile information can also identify specified types of data such
as advertising which the user would like to reject as well as
preferred data sources for scanning user-provided keywords. When a
user initiates contact to WITS WAU 201, profile information is
provided in a wireless segment or packet and received by WITS WAU
201. Processor 325 of FIG. 3 forwards profile information to SPT
307 which stores profile information and operates as an intelligent
agent. SPT 307 then is operable to filter the data to and from each
of the users.
[0041] FIG. 6 illustrates a frame format for a typical signal that
comes in to WITS WAU 201 from one of the plurality of data payloads
401-413. The format is illustrated for a wire to wireless signal,
such as cable. That signal enters the WITS WAU 201 via wire line.
The signal has a frame structure or protocol that includes
synchronization bits 601, control bits 602, sorting agent bits 603,
and data bits 605. Synchronization bits 601 are utilized to provide
coherence between WAU 201 and the payloads. Control bits 602 are
utilized to set various control parameters between WAU 201 and the
payloads, such as: 1) multiple access modulation type/rate, 2)
message source/destination, 3) message type-length, 4) error coding
type, 5) power level, 6) source destination routing tree, 7) time
priority and 8) data loss. Sorting agent bits, or sorting fields,
603 are utilized for determining whether data is for a particular
user based on its user profile and the type of information that the
user desires to receive. Finally, data bits, or data field, 605
includes the data to be transferred. SPT 307 utilizes intelligent
agent information segment 602 and decides whether this information
is valid and should be forwarded on. If it is not valid, SPT 307
does not load that application for retransmittal. If SPT 307
determines that the data is valid for a particular user, that data
is then decoded, error corrected, and reformatted into the
appropriate wireless access protocol for the specified user.
[0042] In operation, WITS WAU 201 is capable of automatic spectral
awareness and management for the frequency channels used in the
wireless distribution of information to each user. Processor 325
operates in cooperation with RF modules 317 and 319 to search for
the unoccupied spectrum when operating in areas that will not allow
fixed or preassigned operating bands and channels. The designated
operating bands are scanned and spectral activity estimates of this
possible channel space are developed. Decision criteria are applied
by processor 325 to select the proper operating center frequencies
and to periodically assess and reallocate to new bands as the
background wireless systems dictate.
[0043] The unique spectral awareness capabilities of the WITS WAU
201 allow selection of the operating bands within the coverage of
the SIM 204. This reduces interference on the existing wireless
systems not related to WITS WAU 201. Dynamic spectrum awareness
knowledge of transmission activity occurring simultaneously on
other channels is used to prevent interference.
[0044] The above-described capabilities facilitate automatic
spectrum planning and co-site contention resolution during system
setup and service initiation. In this scenario, throughput
preservation and system overlay capability is at odds with
fixed-frequency paradigms. Growing spectral clutter is evidenced by
increasing commercial services, such as PCS, AMPS-IS136, IS-95,
GSM, DSS, Iridium, Celestri, and Teledesic. Historically, spectrum
utilization has tended toward the lower frequencies occupying a
tiny fraction (i.e., 1%) of available bandwidth. As commercial
spectral usage increases into the next century, communication
systems will inevitably face constricting limits on information
capacity. Without a means and method for signal coexistence,
communication systems will be forced to move to ever higher bands
of operation. In a cluttered environment, anywhere from 100 MHz to
2 GHz of bandwidth will be needed to ensure high multimedia
throughput and multi-access performance. What is needed are new
technologies that overcome the bandwidth limitation problem by
adaptively increasing data throughput without adding bandwidth. The
system of the present invention solves the bandwidth/throughput
problem via adaptive spectrum exploitation (ASE). ASE will enable
automatic time sharing of intermittently used or unused spectral
regions. Methods used by ASE are well within the capabilities of
software programmable radios.
[0045] In a preferred embodiment, adaptive spectrum exploitation is
performed using transform domain methods on a joint time frequency
(JTF) basis. FIG. 7 illustrates the JTF signal plane, whereby a
data signal 450 is dynamically allocated to unused or under-used
portions of the spectrum. In one embodiment, the spectrum scanning
is performed by a single programmable WITS WAU, which controls a
distributed network of data utilization devices 205 within a given
cell. In this manner, the controlling WITS WAU within the cell is
assigned the task of spectrum scanning, analysis, and coordination.
FIG. 8 illustrates a conceptual block diagram of this function
within a system 460 having a WITS WAU 462 and a utilization device
464. In this embodiment, the system 460 uses a frequency hopping
spectral adaptation approach. Note that for this mode of operation,
the WITS WAU 462 scans the available spectrum to find the
under-used portions of the spectrum. Adaptation is performed in two
distinct modes of operation for sparse vs. non-sparse spectra.
Methods include radiometric analysis, signal parameter extraction,
traffic pattern analysis, and channel activity prediction. In this
dynamic environment, issues of rate adaptation, modulation
adaptation (i.e., M-ary constellation order), and total bandwidth
adaptation are considered. Although FIG. 7 and FIG. 8 illustrate a
pure frequency hop approach, hybrid methods which conceal the hop
impulse (e.g., FH/DSPN hybrid) may also be considered for
applications requiring further signal concealment protection.
[0046] Surveillance and monitoring is gained via analysis of the
spectrum using feature plane transformations, such as amplitude
projections, phase projections, time projections, detection
information, and signal correlation data. These transformations are
analyzed to provide information specific to each discrete signal
within the analysis bandwidth, such as type, frequency range,
transmit probabilities, and signal strength. The feature plane
transformations are computed from the JTF matrix H of order n,m,
where n represents a contiguous time index and m represents a
contiguous spectral index, as is indicated by Equation 1. 1 H = [ h
( 0 , 0 ) h ( 1 , 0 ) h ( 2 , 0 ) h ( m - 1 , 0 ) h ( 0 , 1 ) h ( 0
, 2 ) h ( 0 , n - 1 ) h ( m - 1 , n - 1 ) ] Eq . 1
[0047] Parameter extraction algorithms well within the capabilities
of programmable radios are used to compute a snapshot of spectral
activity corresponding to H. The following structure comprises a
candidate parameter set for one embodiment of the invention:
1 fm_dev % Instantaneous frequency bandwidth fm_modes Discrete
frequency steps fm_center Center frequency am_dev % amplitude
Excursion am_modes Discrete amplitude steps am_center Mean
amplitude pm_dev % Discriminator width pm_modes Discrete phase
modes pm_center Mean discriminant value pk_ave Peak signal envelope
to mean value pk_rms Peak signal envelope to rms value bd_rate
Signal baud rate dt_cycle Duty cycle cr_line Chip rate line.
[0048] In addition to the adaptive exploitation of spectral
"holes", it may also be desirable to employ the spectrum scanning
and analysis in a tagging mode. In this manner, signals within the
band of interest may be identified and tagged such as military,
cellular, satcom, broadcast, global positioning system (GPS), and
pager. Data of interest may also include TDOA estimates and network
identification tags. This emitter analysis mode will provide
network managers with expanded spectral awareness for each cell in
the network. This information is communicated via the
satellite/platform or wireline links shown in FIG. 2.
[0049] At sufficiently high frequencies with wide bandwidths of
operation, the spectral planning may allow the WITS WAU in the cell
to access the spectrum in a uniform distribution. In this
straightforward mode, the MAI characteristics will depend primarily
on the number of users accessing the selected bandwidth. Naturally,
higher frequency propagation loss characteristics will result in
smaller cells with fewer users per cell, while increased bandwidths
will enhance system robustness to interference. In this mode of
operation, the transmission characteristics will include both
frequency hopping and pulse concealment methods in order to avoid
interference with fixed communication systems.
[0050] WITS WAU 201 solves the difficult problem of interpreting
one protocol down to a critical OSI layer and inserting another
protocol layer for the new transmission format without affecting
the message information content. WITS WAU 201 combines the signal
processing and signal protocols associated with STS 303, WDP 309,
and the SPT processor 307 with a common bus and hardware/software
platform to reduce delay, maintain the high data rates and multiple
access capability, and choose the proper cost method.
[0051] WITS WAU 201 collects and maps the user profile information
for best "information contouring." This feature filters information
to reduce the amount of bandwidth or transmission time allocated to
a wireless user. This also reduces the information load on the
user.
2 SCHEDULE A Docket No. Ctry App No. App.Dt. Title C1836K USA
09/642382 22AU2000 ANTENNA MOUNTING APPARATUS 2937 C01 USA
09/580291 26MY2000 ELECTRONIC DEVICE PARAMETER AND METHOD THEREFOR
4002 USA 09/276588 25MR1999 IMAGE ENCODER USING DISCRETE COSINE
TRANSFORM AND TRELLIS CODED QUANTIZATION 4004 USA 09/050293
30MR1998 ADAPTIVE WAVELET CODING OF HYP ERSPECTRAL IMAGERY 4097 USA
08/991822 17DE1997 DISTRIBUTED PACKET COMMUNICATION NETWORK 4160
USA 09/390785 07SE1999 METHOD AND APPARATUS FOR A WEARABLE COMPUTER
4178 USA 09/066794 27AP1998 SATELLITE BASED DATA TRANSFER AND
DELIVERY SYSTEM 4191 USA 09/124719 30JL1998 RADIO WIRELINE
INTERFACE AND METHOD FOR SECURE COMMUNICATION 4296 USA 09/093083
08JE1998 TRAFFIC KEY ACCESS METHOD AND TERMINAL FOR SECURE
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28JA1999 METHOD FOR CONTROLLING ACCESS TO A SHARED SECRET 4329 USA
09/425129 22OC1999 RADIO COMMUNICATION SYSTEM AND METHOD OF
OPERATION 4330 USA 09/288067 05AP1999 ENCRYPTION SYSTEM AND METHOD
FOR COMMUNICATING SECURE DATA OVER A HIGH SPEED SERIAL LINK 4344
USA 09/400258 21SE1999 METHOD AND APPARATUS FOR ADAPTIVE DATA
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4367 USA 09/685497 10OC2000 METHOD FOR PRECOMPENSATING FREQUENCY
DATA FOR USE IN HIGH VELOCITY SATELLITE COMMUNICATION 4368 USA
09/464975 16DE1999 BURST COMMUNICATIONS METHOD AND APPARATUS 4456
USA 09/369463 06AU1999 VOICE DECODER AND METHOD FOR DETECTING
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METHOD AND APPARATUS FOR ADAPTIVE DELAY LOCK LOOP TRACKING OF GPS
PSEUDO RANDOM CODES 4476 USA 09/443597 19NO1999 SEPERATION KERNEL
WITH MEMORY ALLOCATION, REMOTE PROCEDURE CALL AND EXCEPTION
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METHOD AND APPARATUS 4497 USA 09/493825 28JA2000 METHOD AND
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CRYPTOGRAPHIC ENGINE 4549 USA 09/650516 29AU2000 METHOD AND
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USA 09/696370 25OC2000 A PACKET RELAY PROTOCOL BASED ON FLOOD
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02JE2000 DYNAMIC HARDWARE RESOURCE MANAGER FOR SOFTWARE-DEFINED
COMMUNICATIONS SYSTEM 4564 USA 09/568171 10MY2000 SOFTWARE-DEFINED
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OF REGULATING A FLOW OF DATA IN A COMMUNICATION SYSTEM AND
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AND METHOD THEREFOR 4572 USA 09/570129 12MY2000 RADIO TRANSMISSION
TIMING CALIBRATOR 4574 USA 09/592230 12JE2000 HARDWARE RESOURCE
IDENTIFIER FOR SOFTWARE-DEFINED COMMUNICATIONS SYSTEM 4575 USA
09/618401 18JL2000 CONFIGURABLE SOFTWARE OBJECT DISTRIBUTOR AND
SIMULATOR FOR SOFTWARE-DEFINED COMMUNICATIONS SYSTEM 4577 USA
09/610740 06JL2000 METHOD AND SYSTEM FOR PROVIDING CRYPTOGRAPHIC
SERVICES IN A DISTRIBUTED APPLICATION 4578 USA 09/639496 14AU2000
SYMBOL SYNCHRONIZER FOR SOFTWARE DEFINED COMMUNICATIONS SYSTEM
SIGNAL COMBINER 4581 USA 09/578112 24MY2000 DYNAMIC DC BALANCING OF
A DIRECT CONVERSION RECEIVER AND METHOD 4582 USA 09/636139 10AU2000
RF CONTROL INTERFACE FOR SYSTEM WITH SPATIALLY SEPARATED COMPONENTS
4591 USA 09/833005 12AP2001 METHOD FOR SECURELY PROVIDING
ENCRYPTION KEYS 4596 USA 09/667903 22SE2000 METHOD AND APPARATUS
FOR ERROR-RESILIENT VIDEO CODING 4597 USA 09/717592 21NO2000
METHODS AND APPARATUS FOR OBJECT RECOGNITION AND COMPRESSIONP 4655
USA 09/822149 02AP2001 ACTIVE INTERFERENCE SUPPRESSOR UTILIZING
RECOMBINANT TRANSMULTIPLEXING 9045 USA 09/145805 02SE1998 METHOD
AND APPARATUS FOR ASYCHRONOUS ADAPTIVE PROTOCOL LAYER TUNNING 9055
USA 09/186086 05NO1998 METHOD AND APPARATUS FOR PERFORMING CHANNEL
MULTIPLEXING IN A WIRELESS COMMUNICATION SYSTEM 13913 USA 09/473349
28DE1999 METHOD FOR A POST-HPA FILTER REJECTION EQUALIZER 13914 USA
09/473352 28DE1999 MEMORYLESS NON-LINEAR PREDISTORTION OF DIGITAL
AMPLITUDE MODULATION 13915 USA 09/413174 28DE1999 METHOD FOR
LOCALLY ADAPTED FRACTIONALLY SPACED LINEAR PREDISTORTER 13916 USA
09/473457 28DE1999 LOCALLY-ADAPTED PARALLEL T-SPACED LINEAR
PREDISTORTER 15000 USA 09/282106 31MR1999 METHOD AND APPARATUS FOR
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METHOD AND APPARATUS FOR INFORMATION SELECTION AND ROUTING BY
INTELLIGENT AGENTS 15025 USA 09/153976 16SE1998 WIRELESS ACCESS
UNIT UTILIZING ADAPTIVE SPECTRUM EXPLOITATION 15143 USA 09/282106
31MR1999 PERIPHERAL INTERFACE DEVICE FOR A SKIN-E-NET (SEN) NETWORK
15144 USA 09/282104 31MR1999 SWITCHING DEVICES FOR A SKIN-E-NET
(SEN) NETWORK 15145 USA 09/282782 31MR1999 COMPUTER INTERFACE
DEVICE FOR A SKIN-E-NET (SEN) NETWORK 968 USA 490921 02MY1983
FAILURE PROTECTION CIRCUITRY FOR A COMMERCIAL MICROPROCESSOR 1058
USA 357349 08MR1982 PARTIALLY MATCHED ECM FOR USE AGAINST PULSE
COMPRESSION RADARS AND METHOD THEREFOR (U) 1202 USA 06/490609
02MY1983 FLUID EXTENDIBLE MAST AND METHODS OF DEPLOYMENT AND
STOWING THEREFOR 1380 USA 841385 160E1985 MULTIPLE FALSE TARGET ECM
TECHNIQUE (U) 1381 USA 841384 16DE1985 RADAR DECEPTION METHODS (U)
1397 USA 911552 25SE1986 CHARGE TRIGGERING APPARATUS AND METHOD
1460 USA 823116 26SE1985 MODIFIED PLANAR ANTENNA 1475 USA 789008
22JL1985 TRACKING RADAR RECEIVER 1691 USA 377295 26JE1989 DATA
MANIPULATION ARRANGEMENT FOR A NETWORK ENCRYPTION SYSTEM (U) 1699
USA 81965 01JL1987 FABRICATION OF RADIATION HARDENED SILICON GATE
MOS DEVICES (U) 1770 USA 364684 08MY1989 MULTI-RAIL LOOK AHEAD FOR
A KEY GENERATOR 1912 USA 529810 29MY1990 CONE BEAM DOUBLET FOR
PASSIVE SENSOR TARGET DETECTION 2046 USA 618550 27NO1990 CRYPTO
IGNITION KEY INTERFACE 2629 USA 08/415973 03AP1995 VARIABLE TARGET
DETECTION CAPABILITY AND METHOD THEREFOR 2629 D01 USA 08/580116
16JA1996 VARIABLE TARGET DETECTION CAPABILITY AND METHOD THEREFOR
4119 USA 09/072168 04MY1998 METHOD AND APPARATUS FOR PERFORMING
MULTIDIMENSIONAL FEATURE LESS SPREAD SPECTRUM MODULATION 71254 USA
197556 08NO1971 ELECTRONIC COUNTERMEASURE TECHNIQUES AND APPARATUS
UNDER SECRECY ORDER
[0052]
3 SCHEDULE B Patent Number Country Grant Date Title 4977379 USA
11DE1990 DIFFERENTIAL PAIR PUSH-PUSH OSCILLATOR 4412337 USA
25OC1983 POWER AMPLIFIER AND ENVELOPE CORRECTION CIRCUITRY 4442433
USA 10AP1984 ADAPTIVE SIGNAL PROCESSING APPARATUS 4447772 USA
08MY1984 TEMPERATURE STABLE PULSE COUNTING FM DETECTOR 4454604 USA
12JE1984 VIRTUAL TIME BASE DIRECT SYNCHRONIZER AND METHED THEREFOR
4457003 USA 26JE1984 TIME REFERENCE TRACKING LOOP FOR FREQUENCY
HOPPING SYSTEMS 4482975 USA 13NO1984 FUNCTION GENERATOR 4486846 USA
04DE1984 NUMERICALLY CONTROLLED OSCILLATOR USING QUADRANT
REPLICATION& FUNCTION DECOMPOSITION 4489325 USA 18DE1984
ELECTRONICALLY SCANNED SPACE FED ANTENNA SYSTEM AND METHOD OF
OPERATION THEREOF 4494238 USA 15JA1985 MULTIPLE CHANNEL DATA LINK
SYSTEM 4495506 USA 22JA1985 IMAGE SPATIAL FILTER 4507795 USA
26MR1985 APPARATUS AND METHOD FOR LOCATING LEADING AND TRAILING
EDGESOF RF PULSES 4513447 USA 23AP1985 SIMPLIFIED FREQUENCY SCHEME
FOR COHERENT TRANSPONDERS 4514696 USA 30AP1985 NUMERICALLY
CONTROLLED OSCILLATOR 4514707 USA 30AP1985 DIELECTRIC RESONATOR
CONTROLLED PLANAR IMPATT DIODE OSCILLATOR 4516220 USA 07MY1985
PULSE DEINTERLEAVING SIGNAL PROCESSOR AND METHOD 4526050 USA
02JL1985 SELF-TENSIONING DIFFERENTIAL CAPSTAN CABLE DRIVE MECHANISM
4527127 USA 02JL1985 FREQUENCY ACQUISITION CIRCUIT FOR PHASE LOCKED
LOOP 4527330 USA 09JL1985 IMPROVED METHOD FOR COUPLING AN
ELECTRONIC DEVICE INTO AN ELECTRICAL CIRCUIT 4528526 USA 09JL1985
PSK MODULATOR WITH NONCOLLAPSABLE OUTPUT FOR USE WITH A PLL POWER
AMPLIFIER 4531098 USA 23JL1985 WIDE DYNAMIC RANGE AMPLIFIER WITH
SECOND HARMONIC SIGNAL CANCELLATION 4533917 USA 06AU1985 MULTIPLE
FREQUENCY SIDE LOBE INTERFERENCE REJECTOR 4543544 USA 24SE1985 LCC
CO-PLANAR LEAD FRAME SEMICONDUCTOR IC PACKAGE 4547888 USA 15OC1985
RECURSIVE ADAPTIVE EQUALIZER FOR SMSK DATA LINKS 4553218 USA
12NO1985 SYNCHRONOUS CARRY FREQUENCY DIVIDER AND METHOD OF USING
THEREFOR 4556984 USA 03DE1985 FREQUENCY MULTIPLIER/DIVIDER
APPARATUS AND METHOD 4558231 USA 10DE1985 VARIABLE RATE
BI-DIRECTIONAL SLEW CONTROL AND METHOD THEREFOR 4560987 USA
24DE1985 RADAR TARGET DOPPLER FREQUENCY SCINTILLATION SIMULATOR AND
METHOD 4562415 USA 31DE1985 UNIVERSAL ULTRA-PRECISIONPSK MODULATOR
WITH TIME MULTIPLEXEDMODES OF VARYING MODULATION TYPES 4563064 USA
07JA1986 CONICAL FIELD-OF-VIEW RADAR TRANSMITTER SYSTEM 4572846 USA
25FE1986 METHOD OF HERMETICALLY SEALING ELECTRONIC PACKAGES 4580102
USA 01AP1986 FREQUENCY DISCRIMINATOR UTILIZING CARRIER CONSTRUCTION
4581673 USA 08AP1986 APPARATUS AND METHOD FOR PROTECTION AND
RECOVERY FROM LATCH-UP OF INTEGRATED CIRCUITS 4584533 USA 22AP1986
NON-COHERENT BPSK DEMODULATOR 4584538 USA 22AP1986 MODULUS CONTROL
LOOP 4587523 USA 06MY1986 RADAR RANGE TRACKING APPARATUS AND METHOD
4587625 USA 06MY1986 PROCESSOR FOR SIMULATING DIGITAL STRUCTURES
4591890 USA 27MY1986 RADIATION HARD MOS DEVICES AND METHODS FOR THE
MANUFACTURE 4593256 USA 03JE1986 OSCILLATOR WITH SWITCHED REACTANCE
RESONATOR FOR WIDE BANDWIDTH & SERIAL BIAS CONNECTIONS FOR LOW
POWER 4593393 USA 03JE1986 QUASI-PARALLEL CYCLIC REDUNDANCY CHECKER
4598170 USA 01JL1986 SECURE MICROPROCESSOR 4600889 USA 15JL1986
COHERENT OSCILLATOR 4600894 USA 15JL1986 PLANAR RADIAL RESONATOR
OSCILLATOR/AMPLIFIER 4601048 USA 15JL1986 SERIAL MINIMUM
SHIFT-KEYED MODEM 4601915 USA 22JL1986 METHOD OF FABRICATING
AIRSUPPORTED CROSSOVERS 4603437 USA 29JL1986 BALANCED MIXER 4605908
USA 12AU1986 DISABLE CIRCUIT FOR A PHASE LOCKED LOOP DISCRIMINATOR
CIRCUIT 4611186 USA 09SE1986 NONCONTACTING MIC GROUND PLANE
COUPLING USING A BROADBAND VIRTUAL SHORT CIRCUIT GAP 4612496 USA
16SE1986 LINEAR VOLTAGE-TO-CURRENTCONVERTER 4612626 USA 16SE1986
METHOD OF PERFORMING REALINPUT FAST FOURIER TRANSFORMS 4613735 USA
23SE1986 TUBULAR SWITCH PACKAGE WITH SLIDING CONTACTS FORMING A
PORTION THEREOF 4613825 USA 23SE1986 RAPID ACQUISITION TRACKING PLL
WITH FAST AND SLOW SWEEP SPEEDS 4614878 USA 30SE1986 PULSE
GENERATOR 4622555 USA 11NO1986 CODED PULSE DOPPLER RADARWITH
CLUTTER-ADAPTIVE MODULATION AND METHOD THEREFOR 4623841 USA
18NO1986 METHOD AND APPARATUS FOR MEASURING MAGNETIC PROPERTIES OF
MAGNETIC MATERIALS USING POSITIVE AND NEGATIVE 4623846 USA 18NO1986
CONSTANT DUTY CYCLE FREQUENCY PROGRAMMABLE CLOCK GENERATOR 4623856
USA 18NO1986 INCREMENTALLY TUNED RF FILTER HAVING PIN DIODE
SWITCHEND LINES 4630012 USA 16DE1986 RING SHAPED DIELECTRIC
RESONATOR WITH ADJUSTABLE TUNING SCREW EXTENDING UPWARDLY INTO RING
OPENING 4630031 USA 16DE1986 PULSE WIDTH DISCRIMINATING A/D
CONVERTER 4630050 USA 16DE1986 DUAL PURPOSE GUIDANCE SYSTEM FOR A
GUIDED MISSILE 4632485 USA 30DE1986 ELECTRICAL CIRCUIT TESTING
APPARATUS 4635223 USA 06JA1987 FAILURE PROTECTION CIRCUIT FOR A
COMMERCIAL MICROPROCESSOR 4636734 USA 13JA1987 LOW SPURIOUS
NUMERICALLY CONTROLLED OSCILLATOR APPARATUS AND METHOD 4638423 USA
20JA1987 EMULATING COMPUTER 4642642 USA 10FE1987 ADAPTIVE MONOPULSE
PHASE AMPLITUDE CALIBRATION CORRECTION SYSTEM 4646036 USA 24FE1987
SIGNAL ATTENUATION CIRCUIT 4654755 USA 31MR1987
MICROWAVE/MILLIMETER WAVEGROUND PLANE 4706093 USA 10NO1987
MONOPULSE TRACKING SYSTEMSUBSTANTIALLY FREE OF EXTERNALLY GENERATED
NOISE 4715001 USA 22DE1987 EXTREMELY ACCURATE AUTOMATIC FREQUENCY
CONTROL CIRCUIT AND METHOD THEREFOR 4740962 USA 26AP1988
SYNCHRONIZER FOR TIME DIVISION MULTIPLEXED DATA 4742533 USA
03MY1988 SOFT DECISION DIGITAL COMMUNICATION APPARATUS 4742550 USA
03MY1988 4800 BPS INTEROPERABLE RELP SYSTEM 4743867 USA 10MY1988
COMPENSATION CIRCUITRY FOR DUAL PORT PHASE-LOCKED LOOPS 4748449 USA
31MY1988 RF ABSORBING ABLATING APPARATUS 4748577 USA 31MY1988
LOGARITHMIC DATA COMPRESSION 4768208 USA 20AU1988 MID-SYMBOL
SAMPLING TIMING ESTIMATOR 4802640 USA 07FE1989 OBLIQUE AXIS SEEKER
4852123 USA 25JL1989 NEARLY DC IF PHASE LOCKEDTRANSCEIVER 4856004
USA 08AU1989 MICROPROCESSOR BASED BCH DECODER 4866713 USA 12SE1989
OPERATIONAL FUNCTION CHECKING METHOD AND DEVICE FOR MICROPROCESSORS
4872133 USA 03OC1989 FLOATING-POINT SYSTOLIC ARRAY INCLUDING SERIAL
PROCESSORS 4872202 USA 03OC1989 ASCII LPC-10 CONVERSION 4888801 USA
19DE1989 HIERARCHICAL KEY MANAGEMENT SYSTEM 4899159 USA 06FE1990
METHOD AND DEVICE FOR A M-OUT-OF-N DETECTION SCHEME 4914728 USA
03AP1990 WIDEBAND MMIC ACTIVE QUADRATURE HYBRID 4922059 USA
01MY1990 ORIGAMI COMPOSITE EMI/TEMPEST PROOF ELECTRONICS MODULE
4926476 USA 15MY1990 METHOD AND APPARATUS FOR SECURE EXECUTION OF
UNTRUSTED SOFTWARE 4943982 USA 24JL1990 BASEBAND CARRIER PHASE
CORRECTOR 4944008 USA 24JL1990 ELECTRONIC KEYING SCHEME FOR LOCKING
DATA 4961058 USA 02OC1990 FEEDBACK STABILIZATION LOOP 4970456 USA
13NO1990 TEMPERATURE COMPENSATED POWER DETECTOR 4970660 USA
13NO1990 ACCUMULATED STATISTICS CONSTANT FALSE ALARM RATE SIGNAL
PROCESSING METHOD AND DEVICE 4977613 USA 11DE1990 FINE TUNING
CIRCUITRY FORFREQUENCY CONTROL SYSTEM 4979175 USA 18DE1990 STATE
METRIC MEMORY ARRANGEMENT FOR A VITERBI DECODER 4987595 USA
22JA1991 SECURE CRYPTOGRAPHIC PROCESSOR ARRANGEMENT 4992761 USA
12FE1991 PASSIVE 180 DEGREE BROADBAND M MIC HYBRID 4993067 USA
12FE1991 SECURE SATELLITE OVER-THE-AIR REKEYING METHOD AND SYSTEM
4994757 USA 19FE1991 EFFICIENCY IMPROVEMENT OF POWER AMPLIFIERS
4998217 USA 05MR1991 SWEEP GENERATOR LINEARIZATION SYSTEM AND
METHOD 5002347 USA 26MR1991 STEPPED THICKNESS SPECTRAL FILTER FOR
FOCAL PLANE FLATTENING 5003593 USA 26MR1991 TELECONFERENCING METHOD
FOR A SECURE KEY MANAGEMENT SYSTEM 5023576 USA 11JE1991 BROADBAND
180 DEGREE HYBRID 5029206 USA 02JL1991 UNIFORM INTERFACE FOR
CRYPTOGRAPHIC SERVICES 5047787 USA 10SE1991 COUPLING CANCELLATION
FOR ANTENNA ARRAYS 5063360 USA 05NO1991 PULSE REPETITION FREQUENCY
PUSHING COMPENSATION CIRCUIT 5065428 USA 12NO1991 SECURE MODE
ANSWERING MACHINE 5081466 USA 14JA1992 TAPERED NOTCH ANTENNA
5103194 USA 07AP1992 DIELECTRIC RESONATOR FEED BACK STABILIZER
5103451 USA 07AP1992 PARALLEL CYCLIC REDUNDANCY CHECK CIRCUIT
5111155 USA 05MY1992 DISTORTION COMPENSATION MEANS AND METHOD
5121401 USA 09JE1992 PULSED MODULATORS UTILIZING TRANSMISSION LINES
5121413 USA 09JE1992 DIGITAL PULSE PROCESSOR FOR DETERMINING
LEADING AND TRAILING TIME OF-ARRIVAL 5124958 USA 23JE1992 DIGITAL
TAU SYNTHESIZER 5126716 USA 30JE1992 ARTIFICIAL RESISTIVE CARD
5128638 USA 07JL1992 FOUR-PORT QUADRATURE COUPLER SUITABLE FOR
MONOLIGHTIC IMPLEMENTATION 5128967 USA 07JL1992 SYMBOL STATE
TRELLIS MAXIMUM LIKELIHOOD DETECTION METHOD 5140510 USA 18AU1992
CONSTANT FREQUENCY POWER CONVERTER 5144266 USA 01SE1992 BROADBAND
HIGH FREQUENCY ACTIVE MMIC CIRCULATOR 5144268 USA 01SE1992 BANDPASS
FILTER UTILIZING CAPACITIVELY COUPLED STEPPED IMPEDANCE RESONATORS
5170175 USA 08DE1992 THIN FILM RESISTIVE LOADING FOR ANTENNAS
5173941 USA 22DE1992 REDUCED CODEBOOK SEARCH ARRANGEMENT FOR CELP
VOCODERS 5175517 USA 29DE1992 LUMPED ELEMENT REALIZATION OF RING
HYBRIDS INCLUDING PI CIRCUIT AND TANK CIRCUIT MEANS 5175703 USA
29DE1992 HIGH SPEED FULL ADDER AND METHOD 5177381 USA 05JA1993
DISTRIBUTED LOGARITHMIC AMPLIFIER AND METHOD 5179591 USA 12JA1993
ALGORITHM INDEPENDENT CRYPTOGRAPHIC KEY MANAGEMENT 5179594 USA
12JA1993 EFFICIENT CALCULATION OF AUTOCORRELATION COEFFICIENTS FOR
CELP VOCODER ADAPTIVE CODEBOOK 5185611 USA 09FE1993 COMPACT ANTENNA
ARRAY FOR DIVERSITY APPLICATIONS 5185654 USA 09FE1993 ELECTROSTATIC
RF ABSORBANT CIRCUIT CARRIER ASSEMBLY AND METHOD FOR MAKING THE
SAME 5187745 USA 16FE1993 EFFICIENT CODEBOOK SEARCH FOR CELP
VOCODERS 5196805 USA 23MR1993 DISTRIBUTED DIFFERENTIAL AMPLIFIER
ARRANGEMENT 5208853 USA 04MY1993 METHOD AND APPARATUS FOR USAGE
PROTECTION OF DATA FILES USING SPLIT KEY AND UNIQUE VARIABLE
5218325 USA 08JE1993 LOW NOISE OSCILLATOR 5221885 USA 22JE1993
LOW-POWER DUAL VOLTAGE DRIVE CIRCUIT AND METHOD 5223691 USA
29JE1993 PLASMA BASED SOLDERING METHOD REQUIRING NO ADDITIONAL HEAT
SOURCES OR FLUX 5226152 USA 06JL1993 FUNCTIONAL LOCKSTEP
ARRANGEMENT FOR REDUNDANT PROCESSORS 5227589 USA 13JL1993 PLATED
THROUGH INTERCONNECT SOLDER THIEF 5230020 USA 20JL1993 ALGORITHM
INDEPENDENT CRYPTOGRAPHIC KEY MANAGEMENT 5249212 USA 28SE1993
OBJECT REUSE PROTECTION WITH ERROR CORRECTION 5249231 USA 28SE1993
MEMORY TAGGING FOR OBJECT REUSE PROTECTION 5260644 USA 09NO1993
SELF-ADJUSTING SHUNT REGULATOR AND METHOD 5265243 USA 23NO1993
PROCESSOR INTERFACE CONTROLLER FOR INTERFACING PERIPHERAL DEVICES
TO A PROCESSOR 5271023 USA 14DE1993 UNINTERRUPTABLE FAULT TOLERANT
DATA PROCESSOR 5274675 USA 28DE1993 METHOD AND APPARATUS FOR
POST-CORRELATION SCORING CIRCUIT 5292254 USA 08MR1994 METHOD FOR
DETERMINING MINE-FIELD EFFECTS IN A SIMULATED BATTLEFIELD 5298905
USA 29MR1994 VISIBLE LIGHT DETECTION AND RANGING APPARATUS AND
METHOD 5303418 USA 12AP1994 HIGH ISOLATION MIXER 5304961 USA
19AP1994 IMPEDANCE TRANSFORMING DIRECTIONAL COUPLER 5307379 USA
26AP1994 AUTOMATIC NOISE CHARACTERIZATION FOR OPTIMALLY ENABLING A
RECEIVER 5311122 USA 10MY1994 RF TEST INTERFACE CONNECTION 5317320
USA 31MY1994 MULTIPLE RADAR INTERFERENCE SUPPRESSOR 5321420 USA
14JE1994 OPERATOR INTERFACE FOR AN ELECTRONIC MEASUREMENT SYSTEM
5326414 USA 05JL1994 ELECTROSTATIC RF ABSORBANT CIRCUIT CARRIER
ASSEMBLY AND METHOD OF PRODUCTION THEREOF 5335281 USA 02AU1994
NETWORK CONTROLLER AND METHOD 5338617 USA 16AU1994 RADIO FREQUENCY
ABSORBING SHIELD AND METHOD 5338645 USA 16AU1994 THREE DIMENSIONAL
PRINTED CIRCUITS 5339459 USA 16AU1994 HIGH SPEED SAMPLE AND HOLD
CIRCUIT AND RADIO CONSTRUCTED THEREWITH 5339462 USA 16AU1994
BROADBAND MIXER CIRCUIT AND METHOD 5341115 USA 23AU1994 REINFORCED
WRAP AROUND GROUND AND METHOD 5341426 USA 23AU1994 CRYPTOGRAPHIC
KEY MANAGEMENT APPARATUS AND METHOD 5341427 USA 23AU1994 ALGORITHM
INDEPENDENT CRYPTOGRAPHIC KEY MANAGEMENT APPARATUS 5342999 USA
30AU1994 APPARATUS FOR ADAPTING SEMICONDUCTOR DIE PADS AND METHOD
THEREFOR 5345056 USA 06SE1994 PLASMA BASED SOLDERING BY INDIRECT
HEATING 5357567 USA 18OC1994 METHOD AND APPARATUS FOR VOLUME
SWITCHED GAIN CONTROL 5359444 USA 25OC1994 AUTO-FOCUSING OPTICAL
APPARATUS 5365182 USA 15NO1994 METHOD AND APPARATUS FOR LOW POWER
CLOCK GENERATION FOR HIGH SPEED APPLICATIONS 5365591 USA 15NO1994 A
SECURE CRYPTOGRAPHIC LOGIC ARRANGEMENT 5373556 USA 13DE1994 QUICK
CONNECT HOUSING COUPLING AND METHOD 5374945 USA 20DE1994 GRAY LEVEL
PRINTING USING A THERMAL PRINTHEAD 5381332 USA 10JA1995 PROJECT
MANAGEMENT SYSTEM WITH AUTOMATED SCHEDULE AND COST INTEGRATION
5382958 USA 17JA1995 A TIME TRANSFER POSITION LOCATION METHOD AND
APPARATUS 5383185 USA 17JA1995 METHOD AND APPARATUS FOR DATA
COLLISION DETECTION IN A MULTI- PROCESSOR COMMUNICATION SYSTEM
5386204 USA 31JA1995 HIGH ISOLATION MICROWAVE MODULE 5389738 USA
14FE1995 TAMPERPROOF ARRANGEMENT FOR AN INTEGRATED CIRCUIT DEVICE
5390238 USA 14FE1995 HEALTH SUPPORT SYSTEM 5394156 USA 28FE1995
DIGITAL RANGE TURN-AROUND FOR TRACKING, TELEMETRY AND CONTROL
TRANSPONDER 5401689 USA 28MR1995 METHOD FOR FORMING A SEMICONDUCTOR
CHIP CARRIER 5406842 USA 18AP1995 METHOD AND APPARATUS FOR LEVEL
MEASUREMENT USING MICROWAVE SIGNALS 5414738 USA 09MY1995 MAXIMUM
LIKELIHOOD PATHS COMPARISON DECODER 5442327 USA 15AU1995 MMIC
TUNABLE BIPHASE MODULATOR 5442330 USA 15AU1995 COUPLED LINE FILTER
WITH IMPROVED OUT OF BAND REJECTION 5446423 USA 29AU1995 DIGITAL
SINGLE SIDEBAND MODULATOR AND METHOD 5446760 USA 29AU1995
PROGRAMMABLE DIGITAL PULSE SHAPING PHASE MODULATOR 5453720 USA
26SE1995 DIGITAL ADJUSTABLE PHASDE MODULATOR AND METHOD 5454720 USA
03OC1995 METHOD FOR THE ELIMINATION OF AMBIGUOUS SOLUTIONS IN
HYPERBOLIC POSITIONING SYSTEMS 5459681 USA 17OC1995 SPECIAL
FUNCTION ARITHMETIC LOGIC UNIT METHOD AND APPARATUS 5459756 USA
17OC1995 A SAMPLING PHASE DETECTOR ARRANGEMENT 5465300 USA 07NO1995
SECURE COMMUNICATION SETUP METHOD 5473557 USA 05DE1995 COMPLEX
ARITHMETIC PROCESSOR AND METHOD 5477009 USA 19DE1995 RESEALABLE
MULTICHIP MODULE AND METHOD THEREFORE 5479559 USA 26DE1995
EXCITATION SYNCHRONOUS TIME ENCODING VOCODER AND METHOD 5481231 USA
02JA1996 LUMPED ELEMENT FOUR PORT COUPLER 5490148 USA 06FE1996 BIT
ERROR RATE ESTIMATOR 5493309 USA 20FE1996 COLLISON AVOIDANCE
COMMUNICATION SYSTEM AND METHOD 5497160 USA 05MR1996 METHOD AND
APPARATUS FOR IMPROVED AUTO-CORRELATION AND RANGE CORRELATION IN
PSEUDO-RANDOM NOISE CODED SYSTEMS 5497400 USA 05MR1996 DECISION
FEEDBACK DEMODULATOR WITH PHASE AND FREQUENCY ESTIMATION 5504802
USA 02AP1996 A COMMUNICATION SYSTEM APPARATUS AND METHOD FOR
TRANSMITTING AND RECEIVING DATA HAVING A WIRELINE INTERFACE 5612978
USA 18MR1997 METHOD AND APPARATUS FOR REAL-TIME ADAPTIVE
INTERFERENCE CAN CELLATION IN DYNAMIC ENVIRONMENTS 5615266 USA
25MR1997 SECURE COMMUNICATION SETUP METHOD 5623575 USA 22AP1997
EXCITATION SYNCHRONOUS TIME ENCODING VOCODER AND METHOD 5630225 USA
13MY1997 DIELECTRIC RESONATOR IMAGE REJECT MIXER AND METHOD 5633804
USA 27MY1997 METHOD FOR AUTOMATICALLY PRODUCING PRINTED WIRING
BOARD FABRICATION DRAWINGS 5646626 USA 08JL1997 METHOD AND
APPARATUS FOR DIGITAL CORRELATION IN PSEUDORANDOM NOISE CODED
SYSTEMS 5646627 USA 08JL1997 METHOD AND APPARATUS FOR CONTROLLING A
BIPHASE MODULATOR TOIMPROVE AUTOCORRELATION IN PSEUDO-RANDOM NOISE
CODED SYSTEMS 5664084 USA 02SE1997 METHOD AND APPARATUS FOR
VISUALLY CORRELATING TEMPORAL RELATIONSHIPS 5664113 USA 02SE1997
WORKING ASSET MANAGEMENT SYSTEM AND METHOD 5673212 USA 30SE1997
METHOD AND APPARATUS FOR NUMERICALLY CONTROLLED OSCILLATOR WITH
PARTITIONED PHASE ACCUMULATOR 5696880 USA 09DE1997 COMMUNICATION
SYSTEM USER AUTHENTICATION METHOD 5699513 USA 16DE1997 METHOD FOR
SECURE NETWORK ACCESS VIA MESSAGE INTERCEPT 5703479 USA 30DE1997
METHOD AND APPARATUS FOR FAULT ISOLATION BY A COMMUNICATION SYSTEM
TESTER 5703903 USA 30DE1997 METHOD AND APPARATUS FOR ADAPTIVE
FILTERING IN A HIGH INTERFERENCE ENVIRONMENT 5721782 USA 24FE1998
PARTITIONED ECHO CANCELER UTILIZING DECIMATION ECHO LOCATION
5726663 USA 10MR1998 SURVIVAL RADIO INTERROGATOR 5727125 USA
10MR1998 METHOD AND APPARATUS FOR
SYNTHESIS OF SPEECH EXCITATION WAVE FORMS 5731539 USA 24MR1998
TARGET DETECTION METHOD 5744930 USA 28AP1998 UNIVERSAL BATTERY
COMPARTMENT 5751718 USA 12MY1998 SIMULTANEOUS TRANSFER OF VOICE AND
DATA INFORMATION USING MULTI-RATE VOCODER AND BYTE CONTROL PROTOCOL
5757848 USA 26MY1998 METHOD AND APPARATUS FOR A DECIMATING DIGITAL
PN CORRELATOR 5777528 USA 07JL1998 MODE SUPPRESSING COPLANAR WAVE
GUIDE TRANSITION AND METHOD 5778416 USA 07JL1998 PARALLEL PROCESS
ADDRESS GENERATOR AND METHOD 5793749 USA 11AU1998 METHOD AND
APPARATUS FOR COMMUNICATIONS TESTING USING A RECORDED TEST MESSAGE
5797121 USA 18AU1998 METHOD AND APPARATUS FOR IMPLEMENTING VECTOR
QUANTIZATION OF SPEECH PARAMETERS 5798765 USA 25AU1998 A THREE
DIMENSIONAL LIGHT INTENSITY DISPLAY MAP 5809036 USA 15SE1998
BOUNDARY-SCAN TESTABLE SYSTEM AND METHOD 5809396 USA 15SE1998 RADIO
TELECOMMUNICATION NETWORK WITH SELECTABLE RING SIGNALCOVERAGE
5822193 USA 13OC1998 APPARATUS AND METHOD FOR RIGIDLY STABILIZING
CIRCUIT BOARDS 5822687 USA 13OC1998 METHOD AND APPARATUS FOR
AUTOMATIC TUNING CALIBRATION OF ELECTRICALLY TUNED FILTERS 5838151
USA 17NO1998 WIRELESS LOAD SHARING FOR PARALLEL POWER CONVERTERS
AND METHOD 5841874 USA 24NO1998 TERNARY CAM MEMORY ARCHTIECTURE AND
METHODOLOGY 5856970 USA 05JA1999 MULTI-CHANNEL ECHO CANCELLATION
METHOD AND APPARATUS 5861882 USA 19JA1999 INTEGRATED TEST AND
MEASUREMENT MEANS EMPLOYING A GRPHICAL USER INTERFACE 5862132 USA
19JA1999 SYSTEM AND METHOD FOR MULTIPLE ACCESS SHORT MESSAGE
COMMUNICATIONS 5862152 USA 19JA1999 HIERARCHICALLY MANAGED
BOUNDARY-SCAN TESTABLE MODULE AND METHOD 5867774 USA 02FE1999 SMART
CONTROL PANEL FOR A RADIO 5883792 USA 16MR1999 PRINTED WIRING CARD
END BRACKET FOR RUGGEDIZING PRINTED WIRING CARDS 5894285 USA
13AP1999 METHOD AND APPARATUS TO SENSE AIRCRAFT PILOT EJECTION FOR
RESCUE RADIO ACTUATION 5896452 USA 20AP1999 MULTI-CHANNEL ECHO
CANCELER AND METHOD USING CONVOLUTION OF TWO TRAINING SIGNALS
5901226 USA 04MY1999 COMMUNICATION SYSTEM WITH AUTOMATIC HANDOFF
5903603 USA 11MY1999 MODEM TRAINING APPARATUS AND METHOD 5909359
USA 01JE1999 APPARATUS FOR A CIRCUIT BOARD EXTENDER 5917911 USA
29JE1999 METHOD AND SYSTEM FOR HIERACHICAL KEY ACCESS AND RECOVERY
5918028 USA 29JE1999 APPARATUS AND METHOD FOR SMART HOST BUS
ADAPTER FOR PERSONALCOMPUTER CARDS 5926756 USA 20JL1999 METHOD AND
SYSTEM FOR PROGRAMMING A CELLULAR PHONE 5930291 USA 27JL1999 METHOD
AND APPARATUS FOR SELECTING RANDOM VALUES FROM A NON- SEQUENTIAL
SET 5930292 USA 27JL1999 METHOD AND APPARATUS FOR IMPROVED
AUTOCORRELATION IN BIPHASE MODULATED PSEUDORANDOM NOISE CODED
SYSTEMS USING TRI STATE DEMODULATION 5930359 USA 27JL1999
CASCADABLE CONTENT ADDRESSABLE MEMORY AND SYSTEM 5940439 USA
17AU1999 METHOD AND APPARATUS FOR ADAPTIVE RATE COMMUNICATION
SYSTEM 5940508 USA 17AU1999 METHOD AND APPARATUS FOR SEAMLESS
CRYPTO REKEY SYSTEM 5941708 USA 24AU1999 METHOD FOR SIMULATING
TEMPORAL ASPECTS OF AREA WEAPONS 5944822 USA 31AU1999 CHANNEL
ISOLATION ARRANGEMENT AND METHOD FOR DISSOCIATED DATA 5945891 USA
31AU1999 MOLDED WAVEGUIDE FEED AND METHOD FOR MANUFACTURING SAME
5946399 USA 31AU1999 FAILSAFE DEVICE DRIVER AND METHOD 5949248 USA
07SE1999 APPARATUS AND METHOD FOR DYNAMIC HARDENING OF A DIGITAL
CIRCUIT 5953384 USA 14SE1999 AUTOMATIC MEASUREMENT OF GPS CABLE
DELAY TIME 5953645 USA 14SE1999 MULTIPLE FREQUENCY BAND TERMINATION
CIRCUIT AND METHOD 5958073 USA 28SE1999 RELIABILITY ENHANCED
PROCESSING SYSTEM AND METHOD FOR OPTIMIZING 5966799 USA 19OC1999
METHOD OF MOLDING FREE-FLOATING INSERT 5990703 USA 23NO1999
APPARATUS AND METHOD FOR A LOW POWER LATCHABLE ADDER 5995042 USA
30NO1999 SPOOFER DETECTION POWER MANAGEMENT FOR GPS RECEIVERS
5995628 USA 30NO1999 FAILSAFE SECURITY SYSTEM AND METHOD 5996406
USA 07DE1999 ADVANCED SIGNAL PROCESSING FOR A MATERIAL STORAGE
MEASURING DEVICE 5999990 USA 07DE1999 COMMUNICATION HAVING
RECONFIGURABLE RESOURCES 6000054 USA 07DE1999 METHOD AND APPARATUS
FOR ENCODING AND DECODING BINARY INFORMATION USING RESTRICTED CODED
MUDULATION AND PARALLELCONCATENATED CONVOLUTION CODES 6002375 USA
14DE1999 MULTI-SUBSTRATE HIGH FREQUENCY CIRCUIT 6002878 USA
14DE1999 PROCESSOR POWER CONSUMPTION ESTIMATOR AND METHOD THEREFOR
6020770 USA 01FE2000 TRANSPARENT LATCH-BASED SEQUENCER AND SEQUENCE
CONTROLLING METHOD 6026490 USA 15FE2000 CONFIGURABLE CRYPTOGRAPHIC
PROCESSING ENGINE AND METHOD 6035313 USA 07MR2000 MEMORY ADDRESS
GENERATOR FOR AN FET AND METHOD 6037748 USA 14MR2000 METHOD AND
APPARATUS FOR CONTROL OF AN ELECTRONIC SYSTEM USING INTELLIGENT
MOVEMENT DETECTION 6038265 USA 14MR2000 APPARATUS FOR AMPLIFYING A
SIGNAL USING DIGITAL PULSE WIDTHMODULATORS 6044323 USA 28MR2000
SATELLITE BASED COMMERCIAL AND MILITARY INTERCITY AND
INTERCONTINENTAL AIR TRAFFIC CONTROL 6044458 USA 28MR2000 CONTROL
FLOW MONITOR SYSTEM AND METHOD 6072986 USA 06JE2000 METHOD OF
IDENTIFYING ANTENNA BEAMS FOR TRANSMISSION OF RINGALERT MESSAGES
6073014 USA 06JE2000 METHOD AND SYSTEM FOR DYNAMIC GROUP RADIO
USING EXISTING TELEPHONY INFRASTRUCTURE 6081215 USA 27JE2000
HIGH-SPEED INTERLACED ANALOG INTERFACE 6081895 USA 27JE2000 METHOD
AND SYSTEM FOR MANAGING DATA UNIT PROCESSING 6081896 USA 27JE2000
CRYPTOGRAPHIC PROCESSING SYSTEM WITH PROGRAMMABLE FUNCTION UNITS
AND METHOD 6084919 USA 04JL2000 COMMUNICATION UNIT HAVING SPECTRAL
ADAPTABILITY 6085073 USA 04JL2000 METHOD AND SYSTEM FOR REDUCING
THE SAMPLING RATE OF A SIGNALFOR USE IN DEMODULATING HIGH
MODULATION INDEX FREQUENCY MODULATED SIGNALS 6085090 USA 04JL2000
AUTONOMOUS INTERROGATABLE INFORMATION AND POSITION DEVICE 6085350
USA 04JL2000 SINGLE EVENT UPSET TOLERANT SYSTEM AND METHOD 6088581
USA 11JL2000 METHOD AND APPARATUS FOR REDUCING AMPLITUDE MODULATED
INTERFERENCE IN A RECEIVER 6088804 USA 11JL2000 ADAPTIVE SYSTEM AND
METHOD FOR RESPONDING TO COMPUTER NETWORK SECURITY ATTACKS 6090151
USA 18JL2000 ELECTRONIC DEVICE PARAMETER AND METHOD THEREFOR
6098133 USA 01AU2000 BUS ARBITER INTERCONNECT MODULE 6101255 USA
08AU2000 PROGRAMMABLE CRYPTO PROCESSING SYSTEM AND METHOD 6108419
USA 22AU2000 DIFFERENTIAL FAULT ANALYSIS HARDENING APPARATUS AND
EVALUATION METHOD 6112229 USA 29AU2000 SECURE TERMINAL SYSTEM AND
METHOD OF COMMUNICATING 6118805 USA 12SE2000 METHOD AND APPARATUS
FOR PERFORMING FREQUENCY HOPPING ADAPTATION 6122309 USA 19SE2000
METHOD AND APPARATUS FOR PERFORMING INTERFERENCE SUPPRESSION USING
MODALMOMENT ESTIMATES 6133854 USA 17OC2000 SATELLITE SUPPORTED
TRAFFIC SIGNAL CONTROLLER 6134484 USA 17OC2000 METHOD AND APPARATUS
FOR MAINTAINING THE INTEGRITY OF SPACECRAFT BASED TIME AND POSITION
USING GPS 6141548 USA 31OC2000 METHOD AND APPARATUS FOR LOCATION
BASED INTERCEPT IN A COMMUNICATIONS SYSTEM 6141757 USA 31OC2000
SECURE COMPUTER WITH BUS MONITORING SYSTEM AND METHODS 6144739 USA
07NO2000 COMPUTER NETWORK PROTECTION USING CRYPTOGRAPHIC SEALING
SOFTWARE AGENTS AND OBJECTS 6147646 USA 14NO2000 METHOD AND SYSTEM
FOR COLLECTING INFORMATION ABOUT A PLURALITY OF EMITTERS 6147980
USA 14NO2000 AVIONICS SATELLITE BASED DATA MESSAGE ROUTING AND
DELIVERY SYSTEM 6148196 USA 14NO2000 REMOTE CONTROL AND LOCATION
SYSTEM 6154489 USA 28NO2000 ADAPTIVE-RATE CODED DIGITAL IMAGE
TRANSMISSION 6181272 USA 30JA2001 DATA COMMUNICATIONS NETWORK
6185430 USA 06FE2001 VOICE CALL GROUP FUNCTION FOR A SATELLITE
BASED AIR TRAFFIC CONTROL SYSTEM 6190737 USA 20FE2001 METALIZED
ELASTOMERS 6192158 USA 20FE2001 WAVELET IMAGE CODER USING
TRELLIS-CODED QUANTIZATION 6199040 USA 06MR2001 SYSTEM AND METHOD
FOR COMMUNICATING A PERCEPTUALLY ENCODED SPEECH SPECTRUM SIGNAL
6219791 USA 17AP2001 METHOD AND APPARATUS FOR GENERATING AND
VERIFYING ENCRYPTED DATA PACKETS 6240282 USA 29MY2001 APPARATUS FOR
PERFORMING NONLINEAR SIGNAL CLASSIFICTIN IN A COMMUNICATIONS SYSTEM
6249166 USA 19JE2001 PIPELINED PROGRAMABLE DIGITAL PULSE DELAY
6269252 USA 31JL2001 PROGRAMMABLE BRIDGING APPARATUS D352030 USA
01NO1994 TELEPHONE MODULE D354752 USA 24JA1995 TELECOMMUNICATIONS
SECURITY ADAPTOR D359960 USA 04JL1995 CLIP-ON EARPIECE FOR A
PORTABLE HANDSET TELEPHONE OR SIMILAR ARTICLE D365105 USA 12DE1995
TERMINAL ADAPTER MODULE D365348 USA 19DE1995 TELECOMMUNICATION
SYSTEM ENCLOSURE D383404 USA 09SE1997 COMPACT LOW-PROFILE
COMMUNICATION ANALYZER FOR RECEIVING INSERTABLE SMART MODULES
D383405 USA 09SE1997 COMPACT, LOW-PROFILE COMMUNICATION ANALYZER
FOR RECEIVING INSERTABLE SMART MODULES D389837 USA 27JA1998 CONTROL
FACE PLATE FOR A RADIO D395015 USA 09JE1998 SMART MODULE FOR USE
WITH COMMUNICATIONS ANALYZER D396470 USA 28JL1998 PALM-TOP REMOTE
CONTROL D400168 USA 27OC1998 AC ADAPTER UNIT ENCLOSURE D405081 USA
02FE1999 HANDSET FOR A WIRELESS COMMUNICATIONS DEVICE D407091 USA
23MR1999 FRONT PANEL FOR A WIRELESS COMMUNICATIONS DEVICE D416263
USA 09NO1999 CIPHERTEL UNIT ENCLOSURE D431824 USA 10OC2000 WIRELESS
INFORMATION TRANSFER SYSTEM FRONT PANEL D434408 USA 28NO2000
PORTABLE VOICE AND DATA ENCRYPTION MODULE D440671 USA 17AP2001
VENTED ROOF ENCLOSURE 4893098 USA 09JA1990 90 Degree Broadband Mmi
C Hybrid 4893266 USA 09JA1990 Alias Tagging Time Domainto Frequency
Domain Signal Converter 4894658 USA 16JA1990 Method Of Data
Reduction In Non-Coherent Side-Looking Airborne Radars 5265269 USA
23NO1993 Intermediate Frequency Indepen Dent Star Mixer 5266958 USA
30NO1993 Direction Indicating Apparatus And Method
[0053]
4 Patent Number Country Grant Date Title 253691 ARGE 27SE1999
TELECOMMUNICATIONS SECURITY MODULE 624395 ASTL 06OC1992
HIERARCHICAL KEY MANAGEMENT SYSTEM 655303 ASTL 01SE1992 METHOD AND
APPARATUS FOR DATA COLLISION DETECTION IN A MULTI- PROCESSOR
COMMUNICATION SYSTEM 655304 ASTL 01SE1992 ALGORITHM INDEPENDENT
CRYPTOGRAPHIC KEY MANAGEMENT ATE171025 ATRA 09SE1998 CRYPTOGRAPHIC
KEY MANAGEMENT APPARATUS AND METHOD EP053791 DENM 12FE1997
ALGORITHM INDEPENDENT CRYPTOGRAPHIC KEY MANAGEMENT EP0531784 FRAN
16DE1998 METHOD AND APPARATUS USING SPLIT KEY ENCRYPTION/DECRYPTION
EP0537971 FRAN 12FE1997 ALGORITHM INDEPENDENT CRYPTOGRAPHIC KEY
MANAGEMENT EP0540908 FRAN 08JA1997 METHOD AND APPARATUS FOR
AUTOMATIC TUNING CALIBRATION OF ELECTRICALLY TUNED FILTERS
EP0602335 FRAN 09SE1998 CRYPTOGRAPHIC KEY MANAGEMENT APPARATUS AND
METHOD FR9713215 FRAN 19JA2001 SURVIVAL RADIO INTERROGATOR 2059179
GBRI 24MR1997 COMPACT, LOW-PROFILE COMMUNICATION ANALYZER FOR
RECEIVING INSERTABLE SMART MODULES 2059180 GBRI 24MR1997 SMART
MODULE FOR USE WITH COMMUNICATIONS ANALYZER 2059181 GBRI 24MR1997
COMPACT LOW-PROFILE COMMUNICATION ANALYZER FOR RECEIVING INSERTABLE
SMART MODULES 2293736 GBRI 14AP1999 DIGITAL VOICE PRIVACY APPARATUS
AND METHOD EP0410037 GBRI 12OC1994 HIERARCHICAL KEY MANAGEMENT
SYSTEM EP0418024 GBRI 09JL1997 SECURE CRYPTOGRAPHIC PROCESSOR
ARRANGEMENT EP0435094 GBRI 02JE1999 UNIFORM INTERFACE FOR
CRYPTOGRAPHIC SERVICES EP0531784 GBRI 16DE1998 METHOD AND APPARATUS
USING SPLIT KEY ENCRYPTION/DECRYPTION EP0537971 GBRI 12FE1997
ALGORITHM INDEPENDENT CRYPTOGRAPHIC KEY MANAGEMENT EP0540908 GBRI
08JA1997 METHOD AND APPARATUS FOR AUTOMATIC TUNING CALIBRATION OF
ELECTRICALLY TUNED FILTERS EP0602335 GBRI 09SE1998 CRYPTOGRAPHIC
KEY MANAGEMENT APPARATUS AND METHOD EP0710910 GBRI 19JA2000
INTEGRATED TEST AND MEASUREMENT MEANS EMPLOYING A GRPHICAL USER
INTERFACE 69033136.3 GERM 02JE1999 UNIFORM INTERFACE FOR
CRYPTOGRAPHIC SERVICES 69227874.5 GERM 16DE1998 METHOD AND
APPARATUS USING SPLIT KEY ENCRYPTION/DECRYPTION 69320924 GERM
09SE1998 CRYPTOGRAPHIC KEY MANAGEMENT APPARATUS AND METHOD
69514620.3 GERM 19JA2000 INTEGRATED TEST AND MEASUREMENT MEANS
EMPLOYING A GRAPHICAL USER INTERFACE M9606750 GERM 30JA1997 COMPACT
LOW-PROFILE COMMUNICATION ANALYZER FOR RECEIVING INSERTABLE SMART
MODULES M9606809 GERM 13JA1997 SMART MODULE FOR USE WITH
COMMUNICATIONS ANALYZER M9606812 GERM 13JA1997 COMPACT LOW-PROFILE
COMMUNICATION ANALYZER FOR RECEIVING INSERTABLE SMART MODULES
P68918855 GERM 12OC1994 HIERARCHICAL KEY MANAGEMENT SYSTEM
P69029877.3 GERM 05FE1997 TELECONFERENCING METHOD FOR A SECURE KEY
MANAGEMENT SYSTEM P69031014 GERM 09JL1997 SECURE CRYPTOGRAPHIC
PROCESSOR ARRANGEMENT P69216554 GERM 08JA1997 METHOD AND APPARATUS
FOR AUTOMATIC TUNING CALIBRATION OF ELECTRICALLY TUNED FILTERS
P69217440 GERM 12FE1997 ALGORITHM INDEPENDENT CRYPTOGRAPHIC KEY
MANAGEMENT 2154/1996 HONG 19DE1996 HIERARCHICAL KEY MANAGEMENT
SYSTEM HK1001105 HONG 22MY1998 SECURE CRYPTOGRAPHIC PROCESSOR
ARRANGEMENT HK1007261 HONG 09AP1999 TELECONFERENCING METHOD FOR A
SECURE KEY MANAGEMENT SYSTEM HK1007366 HONG 09AP1999 BROADBAND
DIGITAL PHASE ALIGNER HK1007367 HONG 09AP1999 ALGORITHM INDEPENDENT
CRYPTOGRAPHIC KEY MANAGEMENT 80441 IREL 29JE1998 ALGORITHM
INDEPENDENT CRYPTOGRAPHIC KEY MANAGEMENT EP0602335 IREL 09SE1998
CRYPTOGRAPHIC KEY MANAGEMENT APPARATUS AND METHOD 26387 ISRA
14NO1996 COMPACT, LOW-PROFILE COMMUNICATION ANALYZER FOR RECEIVING
INSERTABLE SMART MODULES 26388 ISRA 14NO1996 SMART MODULE FOR USE
WITH COMMUNICATIONS ANALYZER 26389 ISRA 14NO1996 COMPACT
LOW-PROFILE COMMUNICATION ANALYZER FOR RECEIVING INSERTABLE SMART
MODULES 120144 ISRA 17OC2000 METHOD FOR SIMULATING TEMPORAL ASPECTS
OF AREA WEAPONS 121686 ISRA 17OC2000 SURVIVAL RADIO INTERROGATOR
EP0537971 ITAL 12FE1997 ALGORITHM INDEPENDENT CRYPTOGRAPHIC KEY
MANAGEMENT 1008374 JAPA 06FE1998 CHASSIS FOR MEASURING EQUIPMENT
1019992 JAPA 19JE1998 CARD MODULE FOR USE WITH COMMUNICATIONS
ANALYZER 2934107 JAPA 28MY1999 METHOD AND APPARATUS USING SPLIT KEY
ENCRYPTION/DECRYPTION 1008374-1 JAPA 07AU1998 CHASSIS FOR MEASURING
EQUIPMENT 112757 KORS 06MR1997 HIERARCHICAL KEY MANAGEMENT SYSTEM
135592 KORS 15JA1998 DIRECTION INDICATING APPARATUS AND METHOD
138770 KORS 20FE1998 ELECTRONIC KEYING SCHEME FOR LOCKING DATA
155164 KORS 14JL1998 TELECONFERENCING METHOD FOR A SECURE KEY
MANAGEMENT SYSTEM 207470 KORS 17OC1997 COMPACT LOW-PROFILE
COMMUNICATION ANALYZER FOR RECEIVING INSERTABLE SMART MODULES
212543 KORS 24DE1997 COMPACT LOW-PROFILE COMMUNICATION ANALYZER FOR
RECEIVING INSERTABLE SMART MODULES 212544 KORS 24DE1997 SMART
MODULE FOR USE WITH COMMUNICATIONS ANALYZER 234447 KORS 16SE1999
ALGORITHM INDEPENDENT CRYPTOGRAPHIC KEY MANAGEMENT 258398 KORS
10MR2000 METHOD AND APPARATUS FOR DATA COLLISION DETECTION IN A
MULTI- PROCESSOR COMMUNICATION SYSTEM EP0410037 NETH 12OC1994
HIERARCHICAL KEY MANAGEMENT SYSTEM EP0537971 NETH 12FE1997
ALGORITHM INDEPENDENT CRYPTOGRAPHIC KEY MANAGEMENT EPO402083 NETH
05FE1997 TELECONFERENCING METHOD FOR A SECURE KEY MANAGEMENT SYSTEM
306279 NORW 11OC1999 CRYPTOGRAPHIC KEY MANAGEMENT APPARATUS AND
METHOD 306890 NORW 03JA2000 ALGORITHM INDEPENDENT CRYPTOGRAPHIC KEY
MANAGEMENT 9692780-1 SING 31JA1997 HIERARCHICAL KEY MANAGEMENT
SYSTEM EP0410037 SPAI 12OC1994 HIERARCHICAL KEY MANAGEMENT SYSTEM
EPO402083 SPAI 05FE1997 TELECONFERENCING METHOD FOR A SECURE KEY
MANAGEMENT SYSTEM EP0410037 SWED 12OC1994 HIERARCHICAL KEY
MANAGEMENT SYSTEM EP0537971 SWED 12FE1997 ALGORITHM INDEPENDENT
CRYPTOGRAPHIC KEY MANAGEMENT EPO402083 SWED 05FE1997
TELECONFERENCING METHOD FOR A SECURE KEY MANAGEMENT SYSTEM
EP0410037 SWIT 12OC1994 HIERARCHICAL KEY MANAGEMENT SYSTEM
EP0537971 SWIT 12FE1997 ALGORITHM INDEPENDENT CRYPTOGRAPHIC KEY
MANAGEMENT EP0602335 SWIT 09SE1998 CRYPTOGRAPHIC KEY MANAGEMENT
APPARATUS AND METHOD EP0402083 SWIT 05FE1997 TELECONFERENCING
METHOD FOR A SECURE KEY MANAGEMENT SYSTEM NI-071872 TAIW 13OC1995
METHOD AND APPARATUS FOR DATA COLLISION DETECTION IN A MULTI-
PROCESSOR COMMUNICATION SYSTEM NI-113098 TAIW 01AP2000 PROGRAMMABLE
CRYPTO PROCESSING SYSTEM AND METHOD 4977379 USA 11DE1990
DIFFERENTIAL PAIR PUSH-PUSH OSCILLATOR 4412337 USA 25OC1983 POWER
AMPLIFIER AND ENVELOPE CORRECTION CIRCUITRY 4442433 USA 10AP1984
ADAPTIVE SIGNAL PROCESSING APPARATUS 4447772 USA 08MY1984
TEMPERATURE STABLE PULSE COUNTING FM DETECTOR 4454604 USA 12JE1984
VIRTUAL TIME BASE DIRECT SYNCHRONIZER AND METHED THEREFOR 4457003
USA 26JE1984 TIME REFERENCE TRACKING LOOP FOR FREQUENCY HOPPING
SYSTEMS 4482975 USA 13NO1984 FUNCTION GENERATOR 4486846 USA
04DE1984 NUMERICALLY CONTROLLED OSCILLATOR USING QUADRANT
REPLICATION& FUNCTION DECOMPOSITION 4489325 USA 18DE1984
ELECTRONICALLY SCANNED SPACE FED ANTENNA SYSTEM AND METHOD OF
OPERATION THEREOF 4494238 USA 15JA1985 MULTIPLE CHANNEL DATA LINK
SYSTEM 4495506 USA 22JA1985 IMAGE SPATIAL FILTER 4507795 USA
26MR1985 APPARATUS AND METHOD FOR LOCATING LEADING AND TRAILING
EDGESOF RF PULSES 4513447 USA 23AP1985 SIMPLIFIED FREQUENCY SCHEME
FOR COHERENT TRANSPONDERS 4514696 USA 30AP1985 NUMERICALLY
CONTROLLED OSCILLATOR 4514707 USA 30AP1985 DIELECTRIC RESONATOR
CONTROLLED PLANAR IMPATT DIODE OSCILLATOR 4516220 USA 07MY1985
PULSE DEINTERLEAVING SIGNAL PROCESSOR AND METHOD 4526050 USA
02JL1985 SELF-TENSIONING DIFFERENTIAL CAPSTAN CABLE DRIVE MECHANISM
4527127 USA 02JL1985 FREQUENCY ACQUISITION CIRCUIT FOR PHASE LOCKED
LOOP 4527330 USA 09JL1985 IMPROVED METHOD FOR COUPLING AN
ELECTRONIC DEVICE INTO AN ELECTRICAL CIRCUIT 4528526 USA 09JL1985
PSK MODULATOR WITH NONCOLLAPSABLE OUTPUT FOR USE WITH A PLL POWER
AMPLIFIER 4531098 USA 23JL1985 WIDE DYNAMIC RANGE AMPLIFIER WITH
SECOND HARMONIC SIGNAL CANCELLATION 4533917 USA 06AU1985 MULTIPLE
FREQUENCY SIDE LOBE INTERFERENCE REJECTOR 4543544 USA 24SE1985 LCC
CO-PLANAR LEAD FRAME SEMICONDUCTOR IC PACKAGE 4547888 USA 15OC1985
RECURSIVE ADAPTIVE EQUALIZER FOR SMSK DATA LINKS 4553218 USA
12NO1985 SYNCHRONOUS CARRY FREQUENCY DIVIDER AND METHOD OF USING
THEREFOR 4556984 USA 03DE1985 FREQUENCY MULTIPLIER/DIVIDER
APPARATUS AND METHOD 4558231 USA 10DE1985 VARIABLE RATE
BI-DIRECTIONAL SLEW CONTROL AND METHOD THEREFOR 4560987 USA
24DE1985 RADAR TARGET DOPPLER FREQUENCY SCINTILLATION SIMULATOR AND
METHOD 4562415 USA 31DE1985 UNIVERSAL ULTRA-PRECISIONPSK MODULATOR
WITH TIME MULTIPLEXEDMODES OF VARYING MODULATION TYPES 4563064 USA
07JA1986 CONICAL FIELD-OF-VIEW RADAR TRANSMITTER SYSTEM 4572846 USA
25FE1986 METHOD OF HERMETICALLY SEALING ELECTRONIC PACKAGES 4580102
USA 01AP1986 FREQUENCY DISCRIMINATOR UTILIZING CARRIER CONSTRUCTION
4581673 USA 08AP1986 APPARATUS AND METHOD FOR PROTECTION AND
RECOVERY FROM LATCH-UP OF INTEGRATED CIRCUITS 4584533 USA 22AP1986
NON-COHERENT BPSK DEMODULATOR 4584538 USA 22AP1986 MODULUS CONTROL
LOOP 4587523 USA 06MY1986 RADAR RANGE TRACKING APPARATUS AND METHOD
4587625 USA 06MY1986 PROCESSOR FOR SIMULATING DIGITAL STRUCTERES
4591890 USA 27MY1986 RADIATION HARD MOS DEVICES AND METHODS FOR THE
MANUFACTURE 4593256 USA 03JE1986 OSCILLATOR WITH SWITCHED REACTANCE
RESONATOR FOR WIDE BANDWIDTH & SERIAL BIAS CONNECTIONS FOR LOW
POWER 4593393 USA 03JE1986 QUASI-PARALLEL CYCLIC REDUNDANCY CHECKER
4598170 USA 01JL1986 SECURE MICROPROCESSOR 4600889 USA 15JL1986
COHERENT OSCILLATOR 4600894 USA 15JL1986 PLANAR RADIAL RESONATOR
OSCILLATOR/AMPLIFIER 4601048 USA 15JL1986 SERIAL MINIMUM
SHIFT-KEYED MODEM 4601915 USA 22JL1986 METHOD OF FABRICATING
AIRSUPPORTED CROSSOVERS 4603437 USA 29JL1986 BALANCED MIXER 4605908
USA 12AU1986 DISABLE CIRCUIT FOR A PHASE LOCKED LOOP DISCRIMINATOR
CIRCUIT 4611186 USA 09SE1986 NONCONTACTING MIC GROUND PLANE
COUPLING USING A BROADBAND VIRTUAL SHORT CIRCUIT GAP 4612496 USA
16SE1986 LINEAR VOLTAGE-TO-CURRENTCONVERTER 4612626 USA 16SE1986
METHOD OF PERFORMING REAL INPUT FAST FOURIER TRANSFORMS 4613735 USA
23SE1986 TUBULAR SWITCH PACKAGE WITH SLIDING CONTACTS FORMING A
PORTION THEREOF 4613825 USA 23SE1986 RAPID ACQUISITION TRACKING PLL
WITH FAST AND SLOW SWEEP SPEEDS 4614878 USA 30SE1986 PULSE
GENERATOR 4622555 USA 11NO1986 CODED PULSE DOPPLER RADAR WITH
CLUTTER-ADAPTIVE MODULATION AND METHOD THEREFOR 4623841 USA
18NO1986 METHOD AND APPARATUS FOR MEASURING MAGNETIC PROPERTIES OF
MAGNETIC MATERIALS USING POSITIVE AND NEGATIVE 4623846 USA 18NO1986
CONSTANT DUTY CYCLE FREQUENCY PROGRAMMABLE CLOCK GENERATOR 4623856
USA 18NO1986 INCREMENTALLY TUNED RF FILTER HAVING PIN DIODE
SWITCHEND LINES 4630012 USA 16DE1986 RING SHAPED DIELECTRIC
RESONATOR WITH ADJUSTABLE TUNING SCREW EXTENDING UPWARDLY INTO RING
OPENING 4630031 USA 16DE1986 PULSE WIDTH DISCRIMINATING A/D
CONVERTER 4630050 USA 16DE1986 DUAL PURPOSE GUIDANCE SYSTEM FOR A
GUIDED MISSILE 4632485 USA 30DE1986 ELECTRICAL CIRCUIT TESTING
APPARATUS 4635223 USA 06JA1987 FAILURE PROTECTION CIRCUIT FOR A
COMMERCIAL MICROPROCESSOR 4636734 USA 13JA1987 LOW SPURIOUS
NUMERICALLY CONTROLLED OSCILLATOR APPARATUS AND METHOD 4638423 USA
20JA1987 EMULATING COMPUTER 4642642 USA 10FE1987 ADAPTIVE MONOPULSE
PHASE AMPLITUDE CALIBRATION CORRECTION SYSTEM 4646036 USA 24FE1987
SIGNAL ATTENUATION CIRCUIT 4654755 USA 31MR1987
MICROWAVE/MILLIMETER WAVEGROUND PLANE 4706093 USA 10NO1987
MONOPULSE TRACKING SYSTEM SUBSTANTIALLY FREE OF EXTERNALLY
GENERATED NOISE 4715001 USA 22DE1987 EXTREMELY ACCURATE AUTOMATIC
FREQUENCY CONTROL CIRCUIT AND METHOD THEREFOR 4740962 USA 26AP1988
SYNCHRONIZER FOR TIME DIVISION MULTIPLEXED DATA 4742533 USA
03MY1988 SOFT DECISION DIGITAL COMMUNICATION APPARATUS 4742550 USA
03MY1988 4800 BPS INTEROPERABLE RELP SYSTEM 4743867 USA 10MY1988
COMPENSATION CIRCUITRY FOR DUAL PORT PHASE-LOCKED LOOPS 4748449 USA
31MY1988 RF ABSORBING ABLATING APPARATUS 4748577 USA 31MY1988
LOGARITHMIC DATA COMPRESSION 4768208 USA 20AU1988 MID-SYMBOL
SAMPLING TIMING ESTIMATOR 4802640 USA 07FE1989 OBLIQUE AXIS SEEKER
4852123 USA 25JL1989 NEARLY DC IF PHASE LOCKED TRANSCEIVER 4856004
USA 08AU1989 MICROPROCESSOR BASED BCH DECODER 4866713 USA 12SE1989
OPERATIONAL FUNCTION CHECKING METHOD AND DEVICE FOR MICROPROCESSORS
4872133 USA 03OC1989 FLOATING-POINT SYSTOLIC ARRAY INCLUDING SERIAL
PROCESSORS 4872202 USA 03OC1989 ASCII LPC-10 CONVERSION 4888801 USA
19DE1989 HIERARCHICAL KEY MANAGEMENT SYSTEM 4899159 USA 06FE1990
METHOD AND DEVICE FOR A M-OUT-OF-N DETECTION SCHEME 4914728 USA
03AP1990 WIDEBAND MMIC ACTIVE QUADRATURE HYBRID 4922059 USA
01MY1990 ORIGAMI COMPOSITE EMI/TEMPEST PROOF ELECTRONICS MODULE
4926476 USA 15MY1990 METHOD AND APPARATUS FOR SECURE EXECUTION OF
UNTRUSTED SOFTWARE 4943982 USA 24JL1990 BASEBAND CARRIER PHASE
CORRECTOR 4944008 USA 24JL1990 ELECTRONIC KEYING SCHEME FOR LOCKING
DATA 4961058 USA 02OC1990 FEEDBACK STABILIZATION LOOP 4970456 USA
13NO1990 TEMPERATURE COMPENSATED POWER DETECTOR 4970660 USA
13NO1990 ACCUMULATED STATISTICS CONSTANT FALSE ALARM RATE SIGNAL
PROCESSING METHOD AND DEVICE 4977613 USA 11DE1990 FINE TUNING
CIRCUITRY FOR FREQUENCY CONTROL SYSTEM 4979175 USA 18DE1990 STATE
METRIC MEMORY ARRANGEMENT FOR A VITERBI DECODER 4987595 USA
22JA1991 SECURE CRYPTOGRAPHIC PROCESSOR ARRANGEMENT 4992761 USA
12FE1991 PASSIVE 180 DEGREE BROADBAND MMIC HYBRID 4993067 USA
12FE1991 SECURE SATELLITE OVER-THE-AIR REKEYING METHOD AND SYSTEM
4994757 USA 19FE1991 EFFICIENCY IMPROVEMENT OF POWER AMPLIFIERS
4998217 USA 05MR1991 SWEEP GENERATOR LINEARIZATION SYSTEM AND
METHOD 5002347 USA 26MR1991 STEPPED THICKNESS SPECTRAL FILTER FOR
FOCAL PLANE FLATTENING 5003593 USA 26MR1991 TELECONFERENCING METHOD
FOR A SECURE KEY MANAGEMENT SYSTEM 5023576 USA 11JE1991 BROADBAND
180 DEGREE HYBRID 5029206 USA 02JL1991 UNIFORM INTERFACE FOR
CRYPTOGRAPHIC SERVICES 5047787 USA 10SE1991 COUPLING CANCELLATION
FOR ANTENNA ARRAYS 5063360 USA 05NO1991 PULSE REPETITION FREQUENCY
PUSHING COMPENSATION CIRCUIT 5065428 USA 12NO1991 SECURE MODE
ANSWERING MACHINE 5081466 USA 14JA1992 TAPERED NOTCH ANTENNA
5103194 USA 07AP1992 DIELECTRIC RESONATOR FEED BACK STABILIZER
5103451 USA 07AP1992 PARALLEL CYCLIC REDUNDANCY CHECK CIRCUIT
5111155 USA 05MY1992 DISTORTION COMPENSATION MEANS AND METHOD
5121401 USA 09JE1992 PULSED MODULATORS UTILIZING TRANSMISSION LINES
5121413 USA 09JE1992 DIGITAL PULSE PROCESSOR FOR DETERMINING
LEADING AND TRAILING TIME- OF-ARRIVAL 5124958 USA 23JE1992 DIGITAL
TAU SYNTHESIZER 5126716 USA 30JE1992 ARTIFICIAL RESISTIVE CARD
5128638 USA 07JL1992 FOUR-PORT QUADRATURE COUPLER SUITABLE FOR
MONOLIGHTIC IMPLEMENTATION 5128967 USA 07JL1992 SYMBOL STATE
TRELLIS MAXIMUM LIKELIHOOD DETECTION METHOD 5140510 USA 18AU1992
CONSTANT FREQUENCY POWER CONVERTER 5144266 USA 01SE1992 BROADBAND
HIGH FREQUENCY ACTIVE MMIC CIRCULATOR 5144268 USA 01SE1992 BANDPASS
FILTER UTILIZING CAPACITIVELY COUPLED STEPPED IMPEDANCE RESONATORS
5170175 USA 08DE1992 THIN FILM RESISTIVE LOADING FOR ANTENNAS
5173941 USA 22DE1992 REDUCED CODEBOOK SEARCH ARRANGEMENT FOR CELP
VOCODERS 5175517 USA 29DE1992 LUMPED ELEMENT REALIZATION OF RING
HYBRIDS INCLUDING PI CIRCUIT AND TANK CIRCUIT MEANS 5175703 USA
29DE1992 HIGH SPEED FULL ADDER AND METHOD 5177381 USA 05JA1993
DISTRIBUTED LOGARITHMIC AMPLIFIER AND METHOD 5179591 USA 12JA1993
ALGORITHM INDEPENDENT CRYPTOGRAPHIC KEY MANAGEMENT 5179594 USA
12JA1993 EFFICIENT CALCULATION OF AUTO CORRELATION COEFFICIENTS FOR
CELP VOCODER ADAPTIVE CODEBOOK 5185611 USA 09FE1993 COMPACT ANTENNA
ARRAY FOR DIVERSITY APPLICATIONS 5185654 USA 09FE1993 ELECTROSTATIC
RF ABSORBANT CIRCUIT CARRIER ASSEMBLY AND METHOD FOR MAKING THE
SAME 5187745 USA 16FE1993 EFFICIENT CODEBOOK SEARCH FOR CELP
VOCODERS 5196805 USA 23MR1993 DISTRIBUTED DIFFERENTIAL AMPLIFIER
ARRANGEMENT 5208853 USA 04MY1993 METHOD AND APPARATUS FOR USAGE
PROTECTION OF DATA FILES USING SPLIT KEY AND UNIQUE VARIABLE
5218325 USA 08JE1993 LOW NOISE OSCILLATOR 5221885 USA 22JE1993
LOW-POWER DUAL VOLTAGE DRIVE CIRCUIT AND METHOD 5223691 USA
29JE1993 PLASMA BASED SOLDERING METHOD REQUIRING NO ADDITIONAL HEAT
SOURCES OR FLUX
5226152 USA 06JL1993 FUNCTIONAL LOCKSTEP ARRANGEMENT FOR REDUNDANT
PROCESSORS 5227589 USA 13JL1993 PLATED-THROUGH INTERCONNECT SOLDER
THIEF 5230020 USA 20JL1993 ALGORITHM INDEPENDENT CRYPTOGRAPHIC KEY
MANAGEMENT 5249212 USA 28SE1993 OBJECT REUSE PROTECTION WITH ERROR
CORRECTION 5249231 USA 28SE1993 MEMORY TAGGING FOR OBJECT REUSE
PROTECTION 5260644 USA 09NO1993 SELF-ADJUSTING SHUNT REGULATOR AND
METHOD 5265243 USA 23NO1993 PROCESSOR INTERFACE CONTROLLER FOR
INTERFACING PERIPHERAL DEVICES TO A PROCESSOR 5271023 USA 14DE1993
UNINTERRUPTABLE FAULT TOLERANT DATA PROCESSOR 5274675 USA 28DE1993
METHOD AND APPARATUS FOR POST-CORRELATION SCORING CIRCUIT 5292254
USA 08MR1994 METHOD FOR DETERMINING MINE-FIELD EFFECTS IN A
SIMULATED BATTLEFIELD 5298905 USA 29MR1994 VISIBLE LIGHT DETECTION
AND RANGING APPARATUS AND METHOD 5303418 USA 12AP1994 HIGH
ISOLATION MIXER 5304961 USA 19AP1994 IMPEDANCE TRANSFORMING
DIRECTIONAL COUPLER 5307379 USA 26AP1994 AUTOMATIC NOISE
CHARACTERIZATION FOR OPTIMALLY ENABLING A RECEIVER 5311122 USA
10MY1994 RF TEST INTERFACE CONNECTION 5317320 USA 31MY1994 MULTIPLE
RADAR INTERFERENCE SUPPRESSOR 5321420 USA 14JE1994 OPERATOR
INTERFACE FOR AN ELECTRONIC MEASUREMENT SYSTEM 5326414 USA 05JL1994
ELECTROSTATIC RF ABSORBANT CIRCUIT CARRIER ASSEMBLY AND METHOD OF
PRODUCTION THEREOF 5335281 USA 02AU1994 NETWORK CONTROLLER AND
METHOD 5338617 USA 16AU1994 RADIO FREQUENCY ABSORBING SHIELD AND
METHOD 5338645 USA 16AU1994 THREE DIMENSIONAL PRINTED CIRCUITS
5339459 USA 16AU1994 HIGH SPEED SAMPLE AND HOLD CIRCUlT AND RADIO
CONSTRUCTED THE REWITH 5339462 USA 16AU1994 BROADBAND MIXER CIRCUIT
AND METHOD 5341115 USA 23AU1994 REINFORCED WRAP AROUND GROUND AND
METHOD 5341426 USA 23AU1994 CRYPTOGRAPHIC KEY MANAGEMENT APPARATUS
AND METHOD 5341427 USA 23AU1994 ALGORITHM INDEPENDENT CRYPTOGRAPHIC
KEY MANAGEMENT APPARATUS 5342999 USA 30AU1994 APPARATUS FOR
ADAPTING SEMICONDUCTOR DIE PADS AND METHOD THE REFOR 5345056 USA
06SE1994 PLASMA BASED SOLDERING BY INDIRECT HEATING 5357567 USA
18OC1994 METHOD AND APPARATUS FOR VOLUME SWITCHED GAIN CONTROL
5359444 USA 25OC1994 AUTO-FOCUSING OPTICAL APPARATUS 5365182 USA
15NO1994 METHOD AND APPARATUS FOR LOW POWER CLOCK GENERATION FOR
HIGH SPEED APPLICATIONS 5365591 USA 15NO1994 A SECURE CRYPTOGRAPHIC
LOGIC ARRANGEMENT 5373556 USA 13DE1994 QUICK CONNECT HOUSING
COUPLING AND METHOD 5374945 USA 20DE1994 GRAY LEVEL PRINTING USING
A THERMAL PRINTHEAD 5381332 USA 10JA1995 PROJECT MANAGEMENT SYSTEM
WITH AUTOMATED SCHEDULE AND COST INTEGRATION 5382958 USA 17JA1995 A
TIME TRANSFER POSITION LOCATION METHOD AND APPARATUS 5383185 USA
17JA1995 METHOD AND APPARATUS FOR DATA COLLISION DETECTION IN A
MULTI- PROCESSOR COMMUNICATION SYSTEM 5386204 USA 31JA1995 HIGH
ISOLATION MICROWAVE MODULE 5389738 USA 14FE1995 TAMPERPROOF
ARRANGEMENT FOR AN INTEGRATED CIRCUIT DEVICE 5390238 USA 14FE1995
HEALTH SUPPORT SYSTEM 5394156 USA 28FE1995 DIGITAL RANGE
TURN-AROUND FOR TRACKING, TELEMETRY AND CONTROL TRANSPONDER 5401689
USA 28MR1995 METHOD FOR FORMING A SEMICONDUCTOR CHIP CARRIER
5406842 USA 18AP1995 METHOD AND APPARATUS FOR LEVEL MEASUREMENT
USING MICROWAVE SIGNALS 5414738 USA 09MY1995 MAXIMUM LIKELIHOOD
PATHS COMPARISON DECODER 5442327 USA 15AU1995 MMIC TUNABLE BIPHASE
MODULATOR 5442330 USA 15AU1995 COUPLED LINE FILTER WITH IMPROVED
OUT OF BAND REJECTION 5446423 USA 29AU1995 DIGITAL SINGLE SIDEBAND
MODULATOR AND METHOD 5446760 USA 29AU1995 PROGRAMMABLE DIGITAL
PULSE SHAPING PHASE MODULATOR 5453720 USA 26SE1995 DIGITAL
ADJUSTABLE PHASDE MODULATOR AND METHOD 5454720 USA 03OC1995 METHOD
FOR THE ELIMINATION OF AMBIGUOUS SOLUTIONS IN HYPERBOLIC
POSITIONING SYSTEMS 5459681 USA 17OC1995 SPECIAL FUNCTION
ARITHMETIC LOGIC UNIT METHOD AND APPARATUS 5459756 USA 17OC1995 A
SAMPLING PHASE DETECTOR ARRANGEMENT 5465300 USA 07NO1995 SECURE
COMMUNICATION SETUP METHOD 5473557 USA 05DE1995 COMPLEX ARITHMETIC
PROCESSOR AND METHOD 5477009 USA 19DE1995 RESEALABLE MULTICHIP
MODULE AND METHOD THEREFORE 5479559 USA 26DE1995 EXCITATION
SYNCHRONOUS TIME ENCODING VOCODER AND METHOD 5481231 USA 02JA1996
LUMPED ELEMENT FOUR PORT COUPLER 5490148 USA 06FE1996 BIT ERROR
RATE ESTIMATOR 5493309 USA 20FE1996 COLLISON AVOIDANCE
COMMUNICATION SYSTEM AND METHOD 5497160 USA 05MR1996 METHOD AND
APPARATUS FOR IMPROVED AUTO-CORRELATION AND RANGE CORRELATION IN
PSEUDO-RANDOM NOISE CODED SYSTEMS 5497400 USA 05MR1996 DECISION
FEEDBACK DEMODULATOR WITH PHASE AND FREQUENCY ESTIMATION 5504802
USA 02AP1996 A COMMUNICATION SYSTEM APPARATUS AND METHOD FOR
TRANSMITTING AND RECEIVING DATA HAVING A WIRELINE INTERFACE 5504834
USA 02AP1996 PITCH EPOCH SYNCHRONOUS LINEAR PREDICTIVE CODING
VOCODER ANDMETHOD 5506889 USA 09AP1996 DIGITAL VOICE PRIVACY
APPARATUS AND METHOD 5514626 USA 07MY1996 METHOD FOR REDUCING
HETEROSTRUCTURE ACCOUSTIC CHARGE TRANSPORT DEVICE SAW DRIVE POWER
REQUIREMENTS 5517688 USA 14MY1996 MMIC FET MIXER AND METHOD 5518401
USA 21MY1996 NON-PYROTECHNIC CUES AND METHOD FOR AREA WEAPONS
EFFECTS SIMULATION SYSTEM 5519403 USA 21MY1996 GPS COMMUNICATIONS
MULTI-INTERFACE 5522085 USA 28MY1996 ARITHMETIC ENGINE WITH DUAL
MULTIPLIER ACCUMULATOR DEVICES 5524134 USA 04JE1996
TELECOMMUNICATIONS SECURITY MODULE 5525999 USA 11JE1996
MULTI-RECEIVER MASTER CONTROL STATION FOR DIFFERENTIAL GPS AND
METHOD 5528526 USA 18JE1996 ARBITRARY REPEATING PATTERN DETECTOR
5528634 USA 18JE1996 TRAJECTORY DIRECTED TIMING RECOVERY 5530758
USA 25JE1996 OPERATIONAL METHODS FOR A SECURE NODE IN A COMPUTER
NETWORK 5543762 USA 06AU1996 N-WAY IMPEDANCE TRANSFORMING POWER
DIVIDER/COMBINER 5551051 USA 27AU1996 ISOLATED MULTIPROCESSING
COMPUTER ARCHITECTURE AND METHOD 5556281 USA 17SE1996 A SIMULATED
AREA WEAPONS EFFECTS DISPLAY ARRANGEMENT 5566088 USA 15OC1996
MODULAR RADIO TEST SYSTEM AND METHOD 5568149 USA 22OC1996 A/D
CONVERTER SUBSYSTEM WITH HALF LINEAR BUFFER AMPLIFIER 5571018 USA
05NO1996 AN ARRANGEMENT FOR SIMULATING INDIRECT FIRE IN COMBAT
TRAINING 5574751 USA 12NO1996 METHOD FOR A SOFT-DECISION MODULATING
SYSTEM 5576671 USA 19NO1996 METHOD AND APPARATUS FOR POWER
DIVIDING/COMBINING 5579394 USA 26NO1996 CLEAR CHANNEL INTERFACE
MODULE AND METHOD THEREFOR 5579437 USA 26NO1996 PITCH EPOCH
SYNCHRONOUS LINEAR PREDICTIVE CODING VOCODER ANDMETHOD 5583468 USA
10DE1996 HIGH FREQUENCY TRANSITIOHN FROM A MICROSTRIP TRANSMISSION
LINE TO AN MMIC COPLANAR WAVEGUIDE 5584067 USA 10DE1996 DUAL
TRAVELING WAVE RESONATOR FILTER AND METHOD 5588059 USA 24DE1996
COMPUTER SYSTEM AND METHOD FOR SECURE REMOTE COMMUNICATION SESSIONS
5588062 USA 24DE1996 SECURE COMMUNICATION SETUP METHOD 5600260 USA
04FE1997 SEU HARDENING APPROACH FOR HIGH SPEED LOGIC 5603098 USA
11FE1997 INTEGRATED RADIATING AND COUPLING DEVICE FOR DUPLEX
COMMUNICATIONS 5606322 USA 25FE1997 DIVERGENT CODE GENERATOR AND
METHOD 5612948 USA 18MR1997 HIGH BANDWIDTH COMMUNICATION NETWORK
AND METHOD 5612978 USA 18MR1997 METHOD AND APPARATUS FOR REAL-TIME
ADAPTIVE INTERFERENCE CAN CELLATION IN DYNAMIC ENVIRONMENTS 5615266
USA 25MR1997 SECURE COMMUNICATION SETUP METHOD 5623575 USA 22AP1997
EXCITATION SYNCHRONOUS TIME ENCODING VOCODER AND METHOD 5630225 USA
13MY1997 DIELECTRIC RESONATOR IMAGE REJECT MIXER AND METHOD 5633804
USA 27MY1997 METHOD FOR AUTOMATICALLY PRODUCING PRINTED WIRING
BOARD FABRICATION DRAWINGS 5646626 USA 08JL1997 METHOD AND
APPARATUS FOR DIGITAL CORRELATION IN PSEUDORANDOM NOISE CODED
SYSTEMS 5646627 USA 08JL1997 METHOD AND APPARATUS FOR CONTROLLING A
BIPHASE MODULATOR TOIMPROVE AUTOCORRELATION IN PSEUDO-RANDOM NOISE
CODED SYSTEMS 5664084 USA 02SE1997 METHOD AND APPARATUS FOR
VISUALLY CORRELATING TEMPORAL RELATIONSHIPS 5664113 USA 02SE1997
WORKING ASSET MANAGEMENT SYSTEM AND METHOD 5673212 USA 30SE1997
METHOD AND APPARATUS FOR NUMERICALLY CONTROLLED OSCILLATOR WITH
PARTITIONED PHASE ACCUMULATOR 5696880 USA 09DE1997 COMMUNICATION
SYSTEM USER AUTHENTICATION METHOD 5699513 USA 16DE1997 METHOD FOR
SECURE NETWORK ACCESS VIA MESSAGE INTERCEPT 5703479 USA 30DE1997
METHOD AND APPARATUS FOR FAULT ISOLATION BY A COMMUNICATION SYSTEM
TESTER 5703903 USA 30DE1997 METHOD AND APPARATUS FOR ADAPTIVE
FILTERING IN A HIGH INTERFERENCE ENVIRONMENT 5721782 USA 24FE1998
PARTITIONED ECHO CANCELER UTILIZING DECIMATION ECHO LOCATION
5726663 USA 10MR1998 SURVIVAL RADIO INTERROGATOR 5727125 USA
10MR1998 METHOD AND APPARATUS FOR SYNTHESIS OF SPEECH EXCITATION
WAVE FORMS 5731539 USA 24MR1998 TARGET DETECTION METHOD 5744930 USA
28AP1998 UNIVERSAL BATTERY COMPARTMENT 5751718 USA 12MY1998
SIMULTANEOUS TRANSFER OF VOICE AND DATA INFORMATION USING
MULTI-RATE VOCODER AND BYTE CONTROL PROTOCOL 5757848 USA 26MY1998
METHOD AND APPARATUS FOR A DECIMATING DIGITAL PNCORRELATOR 5777528
USA 07JL1998 MODE SUPPRESSING COPLANAR WAVE GUIDE TRANSITION AND
METHOD 5778416 USA 07JL1998 PARALLEL PROCESS ADDRESS GENERATOR AND
METHOD 5793749 USA 11AU1998 METHOD AND APPARATUS FOR COMMUNICATIONS
TESTING USING A RECORDED TEST MESSAGE 5797121 USA 18AU1998 METHOD
AND APPARATUS FOR IMPLEMENTING VECTOR QUANTIZATION OF SPEECH
PARAMETERS 5798765 USA 25AU1998 A THREE DIMENSIONAL LIGHT INTENSITY
DISPLAY MAP 5809036 USA 15SE1998 BOUNDARY-SCAN TESTABLE SYSTEM AND
METHOD 5809396 USA 15SE1998 RADIO TELECOMMUNICATION NETWORK WITH
SELECTABLE RING SIGNALCOVERAGE 5822193 USA 13OC1998 APPARATUS AND
METHOD FOR RIGIDLY STABILIZING CIRCUIT BOARDS 5822687 USA 13OC1998
METHOD AND APPARATUS FOR AUTOMATIC TUNING CALIBRATION OF
ELECTRICALLY TUNED FILTERS 5838151 USA 17NO1998 WIRELESS LOAD
SHARING FOR PARALLEL POWER CONVERTERS AND METHOD 5841874 USA
24NO1998 TERNARY CAM MEMORY ARCHTIECTURE AND METHODOLOGY 5856970
USA 05JA1999 MULTI-CHANNEL ECHO CANCELLATION METHOD AND APPARATUS
5861882 USA 19JA1999 INTEGRATED TEST AND MEASUREMENT MEANS
EMPLOYING A GRPHICAL USER INTERFACE 5862132 USA 19JA1999 SYSTEM AND
METHOD FOR MULTIPLE ACCESS SHORT MESSAGE COMMUNICATIONS 5862152 USA
19JA1999 HIERARCHICALLY MANAGED BOUNDARY-SCAN TESTABLE MODULE AND
METHOD 5867774 USA 02FE1999 SMART CONTROL PANEL FOR A RADIO 5883792
USA 16MR1999 PRINTED WIRING CARD END BRACKET FOR RUGGEDIZING
PRINTED WIRING CARDS 5894285 USA 13AP1999 METHOD AND APPARATUS TO
SENSE AIRCRAFT PILOT EJECTION FOR RESCUE RADIO ACTUATION 5896452
USA 20AP1999 MULTI-CHANNEL ECHO CANCELER AND METHOD USING
CONVOLUTION OF TWO TRAINING SIGNALS 5901226 USA 04MY1999
COMMUNICATION SYSTEM WITH AUTOMATIC HANDOFF 5903603 USA 11MY1999
MODEM TRAINING APPARATUS AND METHOD 5909359 USA 01JE1999 APPARATUS
FOR A CIRCUIT BOARD EXTENDER 5917911 USA 29JE1999 METHOD AND SYSTEM
FOR HIERACHICAL KEY ACCESS AND RECOVERY 5918028 USA 29JE1999
APPARATUS AND METHOD FOR SMART HOST BUS ADAPTER FOR
PERSONALCOMPUTER CARDS 5926756 USA 20JL1999 METHOD AND SYSTEM FOR
PROGRAMMING A CELLULAR PHONE 5930291 USA 27JL1999 METHOD AND
APPARATUS FOR SELECTING RANDOM VALUES FROM A NON- SEQUENTIAL SET
5930292 USA 27JL1999 METHOD AND APPARATUS FOR IMPROVED
AUTOCORRELATION IN BIPHASE MODULATED PSEUDORANDOM NOISE CODED
SYSTEMS USING TRI-STATE DEMODULATION 5930359 USA 27JL1999
CASCADABLE CONTENT ADDRESSABLE MEMORY AND SYSTEM 5940439 USA
17AU1999 METHOD AND APPARATUS FOR ADAPTIVE RATE COMMUNICATION
SYSTEM 5940508 USA 17AU1999 METHOD AND APPARATUS FOR SEAMLESS
CRYPTOREKEY SYSTEM 5941708 USA 24AU1999 METHOD FOR SIMULATING
TEMPORAL ASPECTS OF AREA WEAPONS 5944822 USA 31AU1999 CHANNEL
ISOLATION ARRANGEMENT AND METHOD FOR DISSOCIATED DATA 5945891 USA
31AU1999 MOLDED WAVEGUIDE FEED AND METHOD FOR MANUFACTURING SAME
5946399 USA 31AU1999 FAILSAFE DEVICE DRIVER AND METHOD 5949248 USA
07SE1999 APPARATUS AND METHOD FOR DYNAMIC HARDENING OF A DIGITAL
CIRCUIT 5953384 USA 14SE1999 AUTOMATIC MEASUREMENT OF GPS CABLE
DELAY TIME 5953645 USA 14SE1999 MULTIPLE FREQUENCY BAND TERMINATION
CIRCUIT AND METHOD 5958073 USA 28SE1999 RELIABILITY ENHANCED
PROCESSING SYSTEM AND METHOD FOR OPTIMIZING 5966799 USA 19OC1999
METHOD OF MOLDING FREE-FLOATING INSERT 5990703 USA 23NO1999
APPARATUS AND METHOD FOR A LOW POWER LATCHABLE ADDER 5995042 USA
30NO1999 SPOOFER DETECTION POWER MANAGEMENT FOR GPS RECEIVERS
5995628 USA 30NO1999 FAILSAFE SECURITY SYSTEM AND METHOD 5996406
USA 07DE1999 ADVANCED SIGNAL PROCESSING FOR A MATERIAL STORAGE
MEASURING DEVICE 5999990 USA 07DE1999 COMMUNICATION HAVING
RECONFIGURABLE RESOURCES 6000054 USA 07DE1999 METHOD AND APPARATUS
FOR ENCODING AND DECODING BINARY INFORMATION USING RESTRICTED CODED
MUDULATION AND PARALLELCONCATENATED CONVOLUTION CODES 6002375 USA
14DE1999 MULTI-SUBSTRATE HIGH FREQUENCY CIRCUIT 6002878 USA
14DE1999 PROCESSOR POWER CONSUMPTION ESTIMATOR AND METHOD THEREFOR
6020770 USA 01FE2000 TRANSPARENT LATCH-BASED SEQUENCER AND SEQUENCE
CONTROLLING METHOD 6026490 USA 15FE2000 CONFIGURABLE CRYPTOGRAPHIC
PROCESSING ENGINE AND METHOD 6035313 USA 07MR2000 MEMORY ADDRESS
GENERATOR FOR AN FET AND METHOD 6037748 USA 14MR2000 METHOD AND
APPARATUS FOR CONTROL OF AN ELECTRONIC SYSTEM USING INTELLIGENT
MOVEMENT DETECTION 6038265 USA 14MR2000 APPARATUS FOR AMPLIFYING A
SIGNAL USING DIGITAL PULSE WIDTHMODULATORS 6044323 USA 28MR2000
SATELLITE BASED COMMERCIAL AND MILITARY INTERCITY AND
INTERCONTINENTAL AIR TRAFFIC CONTROL 6044458 USA 28MR2000 CONTROL
FLOW MONITOR SYSTEM AND METHOD 6072986 USA 06JE2000 METHOD OF
IDENTIFYING ANTENNA BEAMS FOR TRANSMISSION OF RINGALERT MESSAGES
6073014 USA 06JE2000 METHOD AND SYSTEM FOR DYNAMIC GROUP RADIO
USING EXISTING TELEPHONY INFRASTRUCTURE 6081215 USA 27JE2000
HIGH-SPEED INTERLACED ANALOG INTERFACE 6081895 USA 27JE2000 METHOD
AND SYSTEM FOR MANAGING DATA UNIT PROCESSING 6081896 USA 27JE2000
CRYPTOGRAPHIC PROCESSING SYSTEM WITH PROGRAMMABLE FUNCTION UNITS
AND METHOD 6084919 USA 04JL2000 COMMUNICATION UNIT HAVING SPECTRAL
ADAPTABILITY 6085073 USA 04JL2000 METHOD AND SYSTEM FOR REDUCING
THE SAMPLING RATE OF A SIGNAL FOR USE IN DEMODULATING HIGH
MODULATION INDEX FREQUENCY MODULATED SIGNALS 6085090 USA 04JL2000
AUTONOMOUS INTERROGATABLE INFORMATION AND POSITION DEVICE 6085350
USA 04JL2000 SINGLE EVENT UPSET TOLERANT SYSTEM AND METHOD 6088581
USA 11JL2000 METHOD AND APPARATUS FOR REDUCING AMPLITUDE MODULATED
INTERFERENCE IN A RECEIVER 6088804 USA 11JL2000 ADAPTIVE SYSTEM AND
METHOD FOR RESPONDING TO COMPUTER NETWORK SECURITY ATTACKS 6090151
USA 18JL2000 ELECTRONIC DEVICE PARAMETER AND METHOD THEREFOR
6098133 USA 01AU2000 BUS ARBITER INTERCONNECT MODULE 6101255 USA
08AU2000 PROGRAMMABLE CRYPTO PROCESSING SYSTEM AND METHOD 6108419
USA 22AU2000 DIFFERENTIAL FAULT ANALYSIS HARDENING APPARATUS AND
EVALUATION METHOD 6112229 USA 29AU2000 SECURE TERMINAL SYSTEM AND
METHOD OF COMMUNICATING 6118805 USA 12SE2000 METHOD AND APPARATUS
FOR PERFORMING FREQUENCY HOPPING ADAPTATION 6122309 USA 19SE2000
METHOD AND APPARATUS FOR PERFORMING INTERFERENCE SUPPRESSION USING
MODALMOMENT ESTIMATES 6133854 USA 17OC2000 SATELLITE SUPPORTED
TRAFFIC SIGNAL CONTROLLER 6134484 USA 17OC2000 METHOD AND APPARATUS
FOR MAINTAINING THE INTEGRITY OF SPACECRAFT BASED TIME AND POSITION
USING GPS 6141548 USA 31OC2000 METHOD AND APPARATUS FOR LOCATION
BASED INTERCEPT IN A COMMUNICATIONS SYSTEM 6141757 USA 31OC2000
SECURE COMPUTER WITH BUS MONITORING SYSTEM AND METHODS 6144739 USA
07NO2000 COMPUTER NETWORK PROTECTION USING CRYPTOGRAPHIC SEALING
SOFTWARE AGENTS AND OBJECTS 6147646 USA 14NO2000 METHOD AND SYSTEM
FOR COLLECTING INFORMATION ABOUT A PLURALITY OF EMITTERS 6147980
USA 14NO2000 AVIONICS SATELLITE BASED DATA MESSAGE ROUTING AND
DELIVERY SYSTEM 6148196 USA 14NO2000 REMOTE CONTROL AND LOCATION
SYSTEM 6154489 USA 28NO2000 ADAPTIVE-RATE CODED DIGITAL IMAGE
TRANSMISSION 6181272 USA 30JA2001 DATA COMMUNICATIONS NETWORK
6185430 USA 06FE2001 VOICE CALL GROUP FUNCTION FOR A SATELLITE
BASED AIR TRAFFIC CONTROL SYSTEM 6190737 USA 20FE2001 METALIZED
ELASTOMERS 6192158 USA 20FE2001 WAVELET IMAGE CODER USING
TRELLIS-CODED QUANTIZATION 6199040 USA 06MR2001 SYSTEM AND METHOD
FOR COMMUNICATING A PERCEPTUALLY ENCODED SPEECH SPECTRUM SIGNAL
6219791 USA 17AP2001 METHOD AND APPARATUS FOR GENERATING AND
VERIFYING ENCRYPTEDDATA PACKETS 6240282 USA 29MY2001 APPARATUS FOR
PERFORMING NONLINEAR SIGNAL CLASSIFICTIN IN A COMMUNICATIONS SYSTEM
6249166 USA 19JE2001 PIPELINED PROGRAMABLE DIGITAL PULSE DELAY
6269252 USA 31JL2001 PROGRAMMABLE BRIDGING APPARATUS D352030 USA
01NO1994 TELEPHONE MODULE D354752 USA 24JA1995 TELECOMMUNICATIONS
SECURITY ADAPTOR D359960 USA 04JL1995 CLIP-ON EARPIECE FOR A
PORTABLE HANDSET TELEPHONE OR SIMILAR ARTICLE D365105 USA 12DE1995
TERMINAL ADAPTER MODULE D365348 USA 19DE1995 TELECOMMUNICATION
SYSTEM ENCLOSURE D383404 USA 09SE1997 COMPACT LOW-PROFILE
COMMUNICATION ANALYZER FOR RECEIVING INSERTABLE SMART MODULES
D383405 USA 09SE1997 COMPACT, LOW-PROFILE COMMUNICATION ANALYZER
FOR RECEIVING INSERTABLE SMART MODULES D389837 USA 27JA1998 CONTROL
FACE PLATE FOR A RADIO D395015 USA 09JE1998 SMART MODULE FOR USE
WITH COMMUNICATIONS ANALYZER D396470 USA 28JL1998 PALM-TOP REMOTE
CONTROL D400168 USA 27OC1998 AC ADAPTER UNIT ENCLOSURE D405081 USA
02FE1999 HANDSET FOR A WIRELESS COMMUNICATIONS DEVICE D407091 USA
23MR1999 FRONT PANEL FOR A WIRELESS COMMUNICATIONS DEVICE D416263
USA 09NO1999 CIPHERTEL UNIT ENCLOSURE D431824 USA 10OC2000 WIRELESS
INFORMATION TRANSFER SYSTEM FRONT PANEL D434408 USA 28NO2000
PORTABLE VOICE AND DATA ENCRYPTION MODULE D440671 USA 17AP2001
VENTED ROOF ENCLOSURE 4893098 USA 09JA1990 90 Degree Broadband Mmi
C Hybrid 4893266 USA 09JA1990 Alias Tagging Time Domainto Frequency
Domain Signal Converter 4894658 USA 16JA1990 Method Of Data
Reduction In Non-Coherent Side-Looking Airborne Radars 5265269 USA
23NO1993 Intermediate Frequency Indepen Dent Star Mixer 5266958 USA
30NO1993 Direction Indicating Apparatus And Method 5278873 USA
11JA1994 Broadband Digital Phase Aligne R 5690491 USA 25NO1997
Method And Apparatus For Simulating The Effects Of Precision-Guided
Munitions 5695341 USA 09DE1997 A Simulated Area Weapons Effects
Display Arrangement 95-1642 VENE 25FE2000 DIGITAL VOICE PRIVACY
APPARATUS AND METHOD
[0054]
5 Exhibit A - Assigned Patents Pending Docket No. Ctry App No
App.Dt Title 2661 ARGE 333641 25SE1995 DIGITAL VOICE PRIVACY
APPARATUS AND METHOD 9048 ASTL 41913/99 18MY1999 COMMUNICATION
HAVING RECONFIGURABLE RESOURCES 2661 CANA 2154410 21JL1995 DIGITAL
VOICE PRIVACY APPARATUS AND METHOD 2672 CANA 2158110 12SE1995 AN
ARRANGEMENT FOR SIMULATING INDIRECT FIRE IN COMBAT TRAINING 9032
CANA 2288960 02FE1999 METHOD AND APPARATUS FOR LOCATION BASED
INTERCEPT 9048 CANA 2331313 18MY1999 COMMUNICATION HAVING
RECONFIGURABLE RESOURCES 2661 CHIN 95116999.8 31AU1995 DIGITAL
VOICE PRIVACY APPARATUS AND METHOD 9032 CHIN 99800220.8 02FE1999
METHOD AND APPARATUS FOR LOCATION BASED INTERCEPT 2371 EPC
95108621.4 06JE1995 COMPLEX ARITHMETIC PROCESSOR AND METHOD 2471
EPC 94118911 01DE1994 SECURE COMMUNICATION SETUP METHOD 2619 EPC
95118852.3 30NO1995 METHOD AND APPARATUS FOR FAULT ISOLATION BY A
COMMUNICATION SYSTEM TESTER 2862 EPC 97104110.8 12MR1997
PARTITIONED ECHO CANCELER UTILIZING DECIMATION ECHO LOCATION 2893
EPC 97935152.5 29JL1997 TERNARY CAM MEMORY ARCHITECTURE AND
METHODOLOGY 4009 EPC 98107595.5 27AP1998 PROGRAMMABLE CRYPTO
PROCESSING SYSTEM AND METHOD 4011 EPC 98114146.8 29JL1998
CONFIGURABLE CRYPTOGRAPHIC PROCESSING ENGINE AND METHOD 4092 EPC
97948124.9 28OC1997 METHOD AND SYSTEM FOR HIERACHICAL KEY ACCESS
AND RECOVERY 4280 EPC PCT/US99/01897 28JA1999 METHOD AND APPARATUS
FOR PERFORMING INTERFERENCE SUPPRESSION USING MODALMOMENT ESTIMATES
9032 EPC 99949519.5 02FE1999 METHOD AND APPARATUS FOR LOCATION
BASED INTERCEPT 9048 EPC 99925671.2 18MY1999 COMMUNICATION HAVING
RECONFIGURABLE RESOURCES 9055 EPC 99956863.7 02NO1999 CHANNEL
MULTIPLEXING FOR A COMMUNICATION SYSTEM 9036 FINL 990998 04SE1998
METHOD AND SYSTEM FOR DYNAMIC GROUP RADIO USING EXISTING TELEPHONY
INFRASTRUCTURE 9032 FRAN 9900934 28JA1999 METHOD AND APPARATUS FOR
LOCATION BASED INTERCEPT IN A COMMUNICATIONS SYSTEM 2454 GERM
P4431886.3 07SE1994 METHOD AND APPARATUS FOR LEVEL MEASUREMENT
USING MICROWAVE SIGNALS 4280 ISRA 131920 28JA1999 METHOD AND
APPARATUS FOR PERFORMING INTERFERENCE SUPPRESSION USING MODALMOMENT
ESTIMATES 9048 ISRA 138740 18MY1999 COMMUNICATION HAVING
RECONFIGURABLE RESOURCES 2195 JAPA 4-290804 05OC1992 METHOD AND
APPARATUS FOR ESTABLISHING SECURE COMMUNICATIONSLINK 2370 JAPA
6-332803 15DE1994 ARITHMETIC ENGINE 2371 JAPA 7-164508 08JE1995
COMPLEX ARITHMETIC PROCESSOR AND METHOD 2631 JAPA 7-350479 21DE1995
METHOD AND APPARATUS FOR COMMUNICATION TESTING USING A RECORDED
TEST MESSAGE 2764 JAPA 8-318852 13NO1996 METHOD AND APPARATUS FOR
IMPLEMENTING VECTOR QUANTIZATION OF SPEECH PARAMETERS 2931 JAPA
9-236570 18AU1997 METHOD AND SYSTEM FOR PROGRAMMING A CELLULAR
PHONE 4009 JAPA 10-132755 27AP1998 PROGRAMMABLE CRYPTO PROCESSING
SYSTEM AND METHOD 9048 JAPA 2000-550220 18MY1999 COMMUNICATION
HAVING RECONFIGURABLE RESOURCES 2370 KORS 94-34610 16DE1994
ARITHMETIC ENGINE 2371 KORS 95-15453 08JE1995 COMPLEX ARITHMETIC
PROCESSOR AND METHOD 9048 KORS 10-2000-7011216 18MY1999
COMMUNICATION HAVING RECONFIGURABLE RESOURCES 4009 MAYS PI9801897
27AP1998 PROGRAMMABLE CRYPTO PROCESSING SYSTEM AND METHOD 9048 MEXI
11342 18MY1999 COMMUNICATION HAVING RECONFIGURABLE RESOURCES 2471
NORW 944464 22NO1994 SECURE COMMUNICATION SETUP METHOD 4368 PCT
PCT/US00/32390 28NO2000 BURST COMMUNICATIONS METHOD AND APPARATUS
4476 PCT PCT/US00/30014 31OC2000 SEPARATION KERNEL 4486 PCT
PCT/US00/32705 01DE2000 SATELLITE RELAY METHOD AND APPARATUS 4501
PCT PCT/US01/09714 27MR2001 SCALABLE CRYPTOGRAPHIC ENGINE 4549 PCT
PCT/US01/25412 14AU2001 METHOD AND APPARATUS FOR PROVIDING
INTEROPERATION BETWEEN A DIGITAL COMMUNICATION SYSTEM AND A PUBLIC
SWITCHED TELEPHONE NETWORK 4564 PCT PCT/US01/13374 26AP2001
SOFTWARE-DEFINED COMMUNICATIONS SYSTEM EXECUTION CONTROL 4577 PCT
PCT/US01/20821 29JE2001 CRYPTOGRAPHIC SERVICES IN A DISTRIBUTED
APPLICATION 4582 PCT PCT/US01/25000 09AU2001 RF CONTROL INTERFACE
FOR SYSTEM WITH SPATIALLY SEPARATED COMPONENTS 9048 POLA P-344663
18MY1999 COMMUNICATION HAVING RECONFIGURABLE RESOURCES 9055 POLA
P-341386 02NO1999 CHANNEL MULTIPLEXING FOR A COMMUNICATION SYSTEM
2370 SING 9602548-1 01DE1994 ARITHMETIC ENGINE 2742 SING 9703569-5
25SE1997 SURVIVAL RADIO INTERROGATOR 2764 SWED 9604563-8 12DE1996
METHOD AND APPARATUS FOR IMPLEMENTING VECTOR QUANTIZATION OF SPEECH
PARAMETERS 9036 SWED 9901585-1 04SE1998 METHOD AND SYSTEM FOR
DYNAMIC GROUP RADIO USING EXISTING TELEPHONY INFRASTRUCTURE C1836K
USA 09/642382 22AU2000 ANTENNA MOUNTING APPARATUS 2937 C01 USA
09/580291 26MY2000 ELECTRONIC DEVICE PARAMETER AND METHOD THEREFOR
4002 USA 09/276588 25MR1999 IMAGE ENCODER USING DISCRETE COSINE
TRANSFORM AND TRELLIS CODED QUANTIZATION 4004 USA 09/050293
30MR1998 ADAPTIVE WAVELET CODING OF HYPERSPECTRAL IMAGERY 4097 USA
08/991822 17DE1997 DISTRIBUTED PACKET COMMUNICATION NETWORK 4160
USA 09/390785 07SE1999 METHOD AND APPARATUS FOR A WEARABLE COMPUTER
4178 USA 09/066794 27AP1998 SATELLITE BASED DATA TRANSFER AND
DELIVERY SYSTEM 4191 USA 09/124719 30JL1998 RADIO WIRELINE
INTERFACE AND METHOD FOR SECURE COMMUNICATION 4296 USA 09/093083
08JE1998 TRAFFIC KEY ACCESS METHOD AND TERMINAL FOR SECURE
COMMUNICATION WITHOUT KEY ESCROW FACILITY 4327 USA 09/240948
28JA1999 METHOD FOR CONTROLLING ACCESS TO A SHARED SECRET 4329 USA
09/425129 22OC1999 RADIO COMMUNICATION SYSTEM AND METHOD OF
OPERATION 4330 USA 09/286067 05AP1999 ENCRYPTION SYSTEM AND METHOD
FOR COMMUNICATING SECURE DATA OVER A HIGH SPEED SERIAL LINK 4344
USA 09/400258 21SE1999 METHOD AND APPARATUS FOR ADAPTIVE DATA
SCRAMBLING 4357 USA 09/665325 19SE2000 METHODS AND APPARATUS FOR
CONTROLLING ACCESS SYSTEM RESOURCES IN A REAL-TIME OPERATING SYSTEM
4367 USA 09/685497 10OC2000 METHOD FOR PRECOMPENSATING FREQUENCY
DATA FOR USE IN HIGH VELOCITY SATELLITE COMMUNICATION 4368 USA
09/464975 16DE1999 BURST COMMUNICATIONS METHOD AND APPARATUS 4456
USA 09/369463 06AU1999 VOICE DECODER AND METHOD FOR DETECTING
CHANNEL ERRORS USING SPECTRAL ENERGY EVOLUTION 4459 USA 09/478058
05JA2000 COMMUNICATION SYSTEM AND METHOD FOR MULTI-RATE, CANNEL-
OPTIMIZED TRELLIS-CODED QUANTIZATION 4472 USA 09/370191 09AU1999
METHOD AND APPARATUS FOR ADAPTIVE DELAY LOCK LOOP TRACKING OF GPS
PSEUDO RANDOM CODES 4476 USA 09/443597 19NO1999 SEPARATION KERNEL
WITH MEMORY ALLOCATION, REMOTE PROCEDURE CALL AND EXCEPTION
HANDLING MECHANISMS 4486 USA 09/465962 17DE1999 SATELLITE RELAY
METHOD AND APPARATUS 4497 USA 09/493825 28JA2000 METHOD AND
APPARATUS FOR ACCURATELY DETERMINING THE POSITION OF SATELLITES IN
GEOSYNCHRONOUS ORBITS 4501 USA 09/540022 31MR2000 SCALABLE
CRYPTOGRAPHIC ENGINE 4549 USA 09/650516 29AU2000 METHOD AND
APPARATUS FOR PROVIDING INTEROPERATION BETWEEN A DIGITAL
COMMUNICATION SYSTEM AND A PUBLIC SWITCHED TELEPHONE NETWORK 4550
USA 09/696370 25OC2000 A PACKET RELAY PROTOCOL BASED ON FLOOD
ROUTING WITH RANDOM DELAY BEFORE RETRANSMISSION 4562 USA 09/586120
02JE2000 DYNAMIC HARDWARE RESOURCE MANAGER FOR SOFTWARE-DEFINED
COMMUNICATIONS SYSTEM 4564 USA 09/568771 10MY2000 SOFTWARE-DEFINED
COMMUNICATIONS SYSTEM EXECUTION 4566 USA 09/615303 13JL2000 METHOD
OF REGULATING A FLOW OF DATA IN A COMMUNICATION SYSTEM AND
APPARATUS THEREFOR 4567 USA 09/649559 28AU2000 TRANSMITTER HAULING
PROGRAMABLE TRANSMISSION PARAMETERS TEMPORALLY ALIGNED WITH PAYLOAD
AND METHOD THEREFOR 4572 USA 09/570129 12MY2000 RADIO TRANSMISSION
TIMING CALIBRATOR 4574 USA 09/592230 12JE2000 HARDWARE RESOURCE
IDENTIFIER FOR SOFTWARE-DEFINED COMMUNICATIONS SYSTEM 4575 USA
09/618401 18JL2000 CONFIGURABLE SOFTWARE OBJECT DISTRIBUTOR AND
SIMULATOR FOR SOFTWARE-DEFINED COMMUNICATIONS SYSTEM 4577 USA
09/610740 06JL2000 METHOD AND SYSTEM FOR PROVIDING CRYPTOGRAPHIC
SERVICES IN A DISTRIBUTED APPLICATION 4578 USA 09/639496 14AU2000
SYMBOL SYNCHRONIZER FOR SOFTWARE DEFINED COMMUNICATIONS SYSTEM
SIGNAL COMBINER 4581 USA 09/578112 24MY2000 DYNAMIC DC BALANCING OF
A DIRECT CONVERSION RECEIVER AND METHOD 4582 USA 09/636139 10AU2000
RF CONTROL INTERFACE FOR SYSTEM WITH SPATIALLY SEPARATED COMPONENTS
4591 USA 09/833005 12AP2001 METHOD FOR SECURELY PROVIDING
ENCRYPTION KEYS 4596 USA 09/667903 22SE2000 METHOD AND APPARATUS
FOR ERROR-RESILIENT VIDEO CODING 4597 USA 09/717592 21NO2000
METHODS AND APPARATUS FOR OBJECT RECOGNITION AND COMPRESSIONP 4655
USA 09/822149 02AP2001 ACTIVE INTERFERENCE SUPPRESSOR UTILIZING
RECOMBINANT TRANSMULTIPLEXING 9045 USA 09/145805 02SE1998 METHOD
AND APPARATUS FOR ASYCHRONOUS ADAPTIVE PROTOCOL LAYER TUNING 9055
USA 09/186086 05NO1998 METHOD AND APPARATUS FOR PERFORMING CHANNEL
MULTIPLEXING IN A WIRELESS COMMUNICATION SYSTEM 13913 USA 09/473349
28DE1999 METHOD FOR A POST HPA FILTER REJECTION EQUALIZER 13914 USA
09/473352 28DE1999 MEMORYLESS NON-LINEAR PREDISTORTION OF DIGITAL
AMPLITUDE MODULATION 13915 USA 09/473174 28DE1999 METHOD FOR
LOCALLY ADAPTED FRACTIONALLY SPACED LINEAR PREDISTORTER 13916 USA
09/473457 28DE1999 LOCALLY-ADAPTED PARALLEL T-SPACED LINEAR
PREDISTORTER 15000 USA 09/282108 31MR1999 METHOD AND APPARATUS FOR
SKIN-E-NET CONTROL AND STATUS NETWORK 15009 USA 09/432062 02NO1999
METHOD AND APPARATUS FOR INFORMATION SELECTION AND ROUTING BY
INTELLIGENT AGENTS 15025 USA 09/153976 16SE1998 WIRELESS ACCESS
UNIT UTILIZING ADAPTIVE SPECTRUM EXPLOITATION 15143 USA 09/282105
31MR1999 PERIPHERAL INTERFACE DEVICE FOR A SKIN-E-NET (SEN) NETWORK
15144 USA 09/282104 31MR1999 SWITCHING DEVICES FOR A SKIN-E-NET
(SEN) NETWORK 15145 USA 09/282782 31MR1999 COMPUTER INTERFACE
DEVICE FOR A SKIN-E-NET (SEN) NETWORK 968 USA 490921 02MY1983
FAILURE PROTECTION CIRCUITRY FOR A COMMERCIAL MICROPROCESSOR 1058
USA 357349 08MR1982 PARTIALLY MATCHED ECM FOR USE AGAINST PULSE
COMPRESSION RADARS AND METHOD THEREFOR (U) 1202 USA 06/490609
02MY1983 FLUID EXTENDIBLE MAST AND METHODS OF DEPLOYMENT AND
STOWING THEREFOR 1380 USA 841385 16DE1985 MULTIPLE FALSE TARGET ECM
TECHNIQUE (U) 1381 USA 841384 16DE1985 RADAR DECEPTION METHODS (U)
1397 USA 911552 25SE1986 CHARGE TRIGGERING APPARATUS AND METHOD
1460 USA 823116 26SE1985 MODIFIED PLANAR ANTENNA 1475 USA 789008
22JL1985 TRACKING RADAR RECEIVER 1691 USA 377295 26JE1989 DATA
MANIPULATION ARRANGEMENT FOR A NETWORK ENCRYPTION SYSTEM (U) 1699
USA 81965 01JL1987 FABRICATION OF RADIATION HARDENED SILICON GATE
MOS DEVICES (U) 1770 USA 364684 08MY1989 MULTI-RAIL LOOK AHEAD FOR
A KEY GENERATOR 1912 USA 529810 29MY1990 CONE BEAM DOUBLET FOR
PASSIVE SENSOR TARGET DETECTION 2046 USA 618550 27NO1990 CRYPTO
IGNITION KEY INTERFACE 2629 USA 08/415973 03AP1995 VARIABLE TARGET
DETECTION CAPABILITY AND METHOD THEREFOR 2629 D01 USA 08/580116
16JA1996 VARIABLE TARGET DETECTION CAPABILITY AND METHOD THEREFOR
4119 USA 09/072168 04MY1998 METHOD AND APPARATUS FOR PERFORMING
MULTIDIMENSIONAL FEATURE LESS SPREAD SPECTRUM MODULATION 71254 USA
197556 08NO1971 ELECTRONIC COUNTERMEASURE TECHNIQUES AND APPARATUS
UNDER SECRECY ORDER
[0055]
6 Exhibit B to Patent Assignment Agreement - Invention Disclosures
Docket No. Inventor Names Title 4565 Williams, Clifford Andrew,
Harbin, Donald Bruce, Configurable Guard for use in Complex
Cryptographic Systems Perona, Richard Allen; Wootten Jonathan Gleen
4662 Pickett, Michael Newton Low Noise, High Power Voltage
Controlled Oscillator 4670 Jeffers, Patrick David; Waldo, Michael
Kip Method to Compensate for Phase Shift in Automatic Gain Control
Elements Eugene 4597b Abousleman, Glen Contour Coding Methods 4596b
Abousleman, Glen Model-based Compression Methods 4561 Vanden
Heuvel, Dean Paul; Baumgartner, Kelly Method and Apparatus for
Simultaneous Digital Data Transmission and Echo Roy; Dawson, John
Williams Cancellation Inhibit in a PSTN PCM Traffic Stream 4605
Orcutt, Edward Kerry; Willis, Carl Myron; Bahr, Link Connectivity
Algorithm for Dynamic Networks with Limited Resources and Randall
Kent Known Geometry 4656 Wreshner, Kenneth Solomon; Clelland, Eric
Jay; Method for Adaptive Signal Compression Petticrew, Keith;
Trapp, Robert; Rhamy Chad 4658 Clelland, Eric Jay; Johnson,
Christopher B.; Method and Apparatus for Adaptive Matched Filter
Signal Parameter Measurements Wreshner, Kenneth S.; Petticrew
Keith; Trapp Robert 4659 Huntley, Clarence Walter Microfluidic
Pump/Battery Charger 4660 Blanchard, Scott David & Lee, Kerry
David Dual Antena Deplpoyment Apparatus for Handheld Satellite
Terminal 4664 Blanchard, Scott David Method and Apparatus for
Matrix Amplifier and Digital Beam-forming in a Satellite
Communication System 4665 Blanchard, Scott David Method and
Apparatus for Reducing Dynamic Range, Downlink Bandwidth and
Transmit Power in a Transparent Satellite Communication System 4666
Blanchard, Scott David Method and Apparatus for Reducing Uplink
Bandwidth and Transmit Power in a Transparent Satellite
Communication System No Number Vanden Heuvel, Dean Paul; Blanchard,
Scott Method and Apparatus to Provide Redundant Inter-Regional
Communications Links Assigned David in a Mobile Satellite System
4672 Blanchard, Scott David Method for predicting signal fades of a
CDMA signal propagating through the ionosphere 4669 Cohlman, Donald
Charles; Sharrit, John Paul; Highly Agile Radio Transceiver
Modulation and Frequency Operation Alonge, Paul Joseph 4671
Jeffers, Patrick David, Waldo, Michael Kip Programmable Device
Configuration Authentication Method Eugene 4593 Haakenson, Nichi
Lynn; Dunbar, Lori Rene; Tamper Resistant Layout Design Soelberg,
Chris Allen; Neil, James Ray 4673 Kitaj, Paul; Paskett, Serman;
Hardy, Doug; Multi-Level Acces Control System Seeker, Frank;
Tugenberg, Steve 4657 Strouse, Steven; Besser, Brant; Voegtly, Carl
Conductive Foam usinf Room Temperature Liquid Metal Alloy 4667
Piosenka, Gerald V.; Reinold, Jurgen; Vanden Method, Apparatus and
Applications for Coupling High-Speed Broadcast Delivery Heuvel,
Dean Paul with Low-Speed Interactive Data Applicability
* * * * *