U.S. patent application number 11/267098 was filed with the patent office on 2006-08-10 for system for providing in-flight entertainment with data redundancy.
This patent application is currently assigned to Thales Avionics, Inc.. Invention is credited to Kenneth A. JR. Brady, Bradley Foreman, Dan Reed, Mark Thompson.
Application Number | 20060179457 11/267098 |
Document ID | / |
Family ID | 36578361 |
Filed Date | 2006-08-10 |
United States Patent
Application |
20060179457 |
Kind Code |
A1 |
Brady; Kenneth A. JR. ; et
al. |
August 10, 2006 |
System for providing in-flight entertainment with data
redundancy
Abstract
A system for providing in-flight entertainment with data
redundancy is described. In an embodiment of the invention, the
system includes a first server and a second server disposed within
an aircraft, each having stored thereon digital content. The system
also includes a network switch that is communicatively linked to
both the first and the second servers, and video display units,
each being located proximate to a passenger seat within the
aircraft, communicatively linked to the network switch, and having
a user interface that permits a passenger to request digital
content. Both the first and second servers are configured to
transmit their respective stored digital content to the video
display units via the network switch. Each of the plurality of
video display units decodes and displays the video content upon
receiving it.
Inventors: |
Brady; Kenneth A. JR.;
(Trabuco Canyon, CA) ; Reed; Dan; (Skyforest,
CA) ; Thompson; Mark; (Rancho Santa Margarita,
CA) ; Foreman; Bradley; (Mission Viejo, CA) |
Correspondence
Address: |
GARDNER CARTON & DOUGLAS LLP;ATTN: PATENT DOCKET DEPT.
191 N. WACKER DRIVE, SUITE 3700
CHICAGO
IL
60606
US
|
Assignee: |
Thales Avionics, Inc.
Irvine
CA
|
Family ID: |
36578361 |
Appl. No.: |
11/267098 |
Filed: |
November 4, 2005 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
60625476 |
Nov 5, 2004 |
|
|
|
Current U.S.
Class: |
725/76 ;
348/E7.085; 725/75 |
Current CPC
Class: |
H04L 69/40 20130101;
H04N 7/18 20130101; H04N 7/106 20130101; B64D 11/00155 20141201;
H04L 67/12 20130101; A63F 13/352 20140902; H04L 2012/4028 20130101;
H04L 67/2842 20130101; H04H 20/62 20130101; H04N 21/2146 20130101;
A63F 2300/516 20130101; H04L 67/28 20130101; H04L 67/38 20130101;
B64D 11/0015 20130101 |
Class at
Publication: |
725/076 ;
725/075 |
International
Class: |
H04N 7/18 20060101
H04N007/18 |
Claims
1. A system for providing in-flight entertainment, the system
comprising: a first server disposed within an aircraft, the first
server having stored thereon digital content; a second server
disposed within the aircraft, the second server having stored
thereon digital content; a network switch disposed within the
aircraft, wherein the network switch is communicatively linked to
both the first and the second servers; and a plurality of video
display units, each of the plurality being located proximate to a
passenger seat within the aircraft, each of the plurality being
communicatively linked to the network switch, each comprising a
user interface that permits a passenger to request digital content,
wherein both the first and second servers are configured to
transmit their respective stored digital content to the plurality
of video display units via the network switch, and wherein each of
the plurality of video display units decodes and displays the video
content upon receiving it.
2. The system of claim 1, wherein each of the first and second
servers is normally assigned to provide its digital content to a
different group of the plurality of display units, wherein when the
first server becomes unable to transmit its digital content to the
group of display units to which it is assigned, the second server
transmits its digital content to the group of display units to
which the first server is normally assigned.
3. The system of claim 1, wherein the network switch is an Ethernet
switch that routes Ethernet frames containing the digital content
to the plurality of video display units.
4. The system of claim 1, wherein the digital content is
transmitted to the plurality of video display units as streaming
video, wherein each of the plurality of video display units
comprises a decoder for decoding the streaming video.
5. The system of claim 1, wherein each of the plurality of video
display units has a touch screen user interface.
6. The system of claim 1, wherein the digital content stored on
each of the servers comprises in-flight movies.
7. The system of claim 1, further comprising a wireless access
point communicatively linked to the network switch.
8. The system of claim 7, wherein the network is a wireless
network, and the plurality video display units access the network
via the wireless access point.
9. The system of claim 1, wherein the network switch is a first
network switch, the system further comprising a second network
switch communicatively linked to the first and second servers.
10. A system for providing in-flight entertainment, the system
being located on-board an aircraft, the system comprising: an
on-demand server having stored thereon digital content; a first
network switch communicatively linked to the on-demand server; a
second network switch communicatively linked to the on-demand
server; a plurality of video display units, each of the plurality
being located proximate to a passenger seat within the aircraft,
each of the plurality being communicatively linked to both the
first and second network switches, each of the plurality comprising
a user interface that permits a passenger at the seat to request
the digital content, wherein the on-demand server transmits its
stored digital content to a subset of the plurality of video
display units via either the first or second network switch,
wherein both the first network switch and the second network switch
are configured to route the digital content to the subset of the
plurality of video display units, and wherein each of the subset of
the plurality of video display units decodes and displays the
digital content to a passenger upon receiving it.
11. The system of claim 10, wherein each of the first and second
network switches is normally assigned to a different group of the
plurality of display units, wherein when the first network switch
becomes unable to communicate with the group of display units to
which it is assigned, the second network switch communicates with
the group of display units to which the first network switch is
normally assigned.
12. The system of claim 10, wherein the first and second network
switches are Ethernet switches that route Ethernet frames
containing the digital content to the plurality of video display
units.
13. The system of claim 10, wherein the digital content is
transmitted to the plurality of video display units as streaming
video, wherein each of the plurality of video display units
comprises a decoder for decoding the streaming video.
14. The system of claim 10, wherein the user interface of each of
the plurality of video display units is a touch screen
interface.
15. The system of claim 10, wherein the network is a wireless
network, and the plurality video display units access the network
via a wireless access point.
16. A system for providing data redundancy on an in-flight
entertainment network that is deployed on an aircraft, the system
comprising: a server having stored therein digital content; a
plurality of video display units distributed throughout the
aircraft, the plurality being communicatively linked together in a
daisy chain, wherein a first display unit of the plurality and a
second display unit of the plurality are disposed at each of the
two respective ends of the daisy chain; a primary communications
path defined between the first display unit and the server; and a
secondary communications path defined between the second display
unit and the server; wherein the server transmits its stored
digital content to the plurality of video display units via both
the primary and secondary communications path, and wherein each of
the plurality of video display units decodes and displays the
digital content upon receiving it.
17. The system of claim 16, wherein a break occurs such that at
least some of the plurality of video display units can no longer
receive data via the primary communications path but still continue
to receive data via the secondary communications path.
18. The system of claim 16, further comprising a network switch
communicatively linked to both the server and the plurality of
video display units such that all communications from the server
along the primary and secondary communications paths are routed
through the network switch.
19. The system of claim 16, wherein the digital content is
transmitted to the plurality of video display units as streaming
video, and wherein each of the plurality of video display units
comprises a decoder for decoding the streaming video.
20. The system of claim 19, wherein the digital content comprises
in-flight movies.
Description
[0001] This application claims priority to U.S. Provisional Patent
Application Ser. No. 60/625,476 filed on Nov. 5, 2004, which is
incorporated herein by reference in its entirety.
FIELD OF THE INVENTION
[0002] The invention relates generally to in-flight entertainment
systems and, more particularly, to a full in-seat digital video
system.
BACKGROUND
[0003] Current in-flight entertainment (IFE) systems are tailored
to the needs of aircraft that carry more than 150 passengers. Such
aircraft have spacious interiors as well as generous weight and
power constraints, and the IFE system used therein have seat boxes
mounted under the seat, large closets and monuments in which to
store head-end equipment, and in-arm passenger control units to
control the audio, video and cabin attendant functions.
Additionally, many current IFE systems are not sufficiently robust
enough to recover from the failure of any major component.
SUMMARY
[0004] In accordance with the foregoing, a system for providing
in-flight entertainment with data redundancy is provided. In an
embodiment of the invention, the system includes a first server and
a second server disposed within an aircraft, each having stored
thereon digital content. The system also includes a network switch
that is communicatively linked to both the first and the second
servers, and video display units, each being located proximate to a
passenger seat within the aircraft, communicatively linked to the
network switch, and having a user interface that permits a
passenger to request digital content. Both the first and second
servers are configured to transmit their respective stored digital
content to the video display units via the network switch. Each of
the plurality of video display units decodes and displays the video
content upon receiving it.
[0005] In another embodiment of the invention, a system for
providing in-flight entertainment is located on-board an aircraft
and includes an on-demand server with stored digital content, first
and second network switches communicatively linked to the on-demand
server, and video display units. Each video display unit is located
proximate to a passenger seat within the aircraft and is
communicatively linked to both the first and second network
switches. Each video display unit has a user interface that permits
a passenger at the seat to request digital content. The on-demand
server transmits its stored digital content to a subset of the
plurality of video display units via either the first or second
network switch. Both the first network switch and the second
network switch are configured to route the digital content to a
subset of the plurality of video display units, which then decode
and display the digital content upon receiving it.
[0006] In yet another embodiment of the invention, a system for
providing data redundancy on an in-flight entertainment network
that is deployed on an aircraft includes a server having stored
therein digital content, video display units distributed throughout
the aircraft and linked together in a daisy chain. The units at the
two respective ends of the daisy chain are linked to a primary
communications path and a secondary communications path. The server
transmits its stored digital content to the video display units via
both the primary and secondary communications path. Upon receiving
the content, each of the plurality of video display units decodes
and displays it.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] FIG. 1 illustrates the basic topology of an in-flight
entertainment system in accordance with one embodiment of the
present invention; and
[0008] FIGS. 2A, 2B and 3-5 illustrate various other embodiments of
the in-flight entertainment (IFE) system.
DETAILED DESCRIPTION
[0009] An embodiment of the invention is illustrated in FIG. 1. In
this embodiment, an IFE system 100 includes a communications
network deployed on an aircraft. In this embodiment, the network is
Ethernet-based, but may be based on any sort of networking
standard. In the illustrated embodiment, the aircraft has several
rows, and each row has four seats. Any seating arrangement is
possible, however. Each seat has its own smart video display unit
(SVDU) 110 having an integrated audio jack (AJ) 112. The SVDUs 110
are communicatively linked to the network. Power to the SVDUs 110
is provided by a number of DC-DC converters 160. The system 100
also includes an Ethernet switch unit (ESU) 120, which
appropriately routes Ethernet frames carrying digital content to
the SVDUs 110 on the network. The ESU 120 allows various Ethernet
devices on the aircraft (e.g., on-demand servers, SVDUs,
audio/video controller, SATCOM BGAN port, data loading ports) to
communicate with one another. The ESU 120 accepts downloadable
configuration tables based on known addresses to support aircraft
reconfigurations. There are many possible implementations of the
ESU 120. In one embodiment of the invention, for example, the ESU
120 has eight Ethernet ports for 74 seats. In another embodiment,
the ESU provides 12 Ethernet ports for 104 seats. It is to be noted
that a variety of network topologies are possible for the network,
including token ring, and star.
[0010] The system 100 also includes a cabin management terminal 152
that is communicatively linked to the network and that permits the
flight crew to control and configure aspects of the system. In the
illustrated embodiment, the cabin management terminal (CMT) 152 is
physically located in a cabin attendant shelter 150 on the
aircraft. The system further includes a first on demand server
130-1 and a second on-demand server 130-2, which provide pre-stored
digital content to the network. Digital content may also be
provided from a variety of other sources including a satellite TV
and radio (SAT TV) subsystem 140 that receives real-time TV and
radio signals. The SAT TV subsystem 140 is interfaced to the ESU
120 through an audio-video controller (AVC) 170. In the illustrated
embodiment, the on-demand servers 130-1 and 130-2 are physically
located in a utility cabinet 172.
[0011] The hardware components of the IFE system 100 may be
physically arranged in any suitable manner. In one embodiment, the
ESU 120, on-demand servers 130-1 and 130-2, and the AVC unit 170
are installed in the cargo or electronics bay, including the rack
provisions, cooling, and power, with the CMT 150 and dual RJ-45
data loading ports being installed in the main cabin. The CMT 150
may also be located in a forward facing closet, or located in the
"hat-rack" or shelf inside the closet area. RJ-45 jacks and DC
power jacks may be mounted along the sidewall for each group of
seats, thereby providing both a data connection and a power
connection for the parts of the IFE system 100 located near that
group of seats.
[0012] The system may also include at least one wireless access
point (WAP) 180 that may, in some situations, be used by passengers
with laptop computers or other wireless devices. The WAP 180
provides wireless LAN network connectivity for airborne
applications. The WAP 180 is connected to the IFE system 100 via
the ESU 120 and allows passenger wireless devices (e.g., laptops)
to connect to the on-board cache Web content and entertainment
services, as well as off-aircraft connectivity services. The WAP
180 is ARINC 763 (Network Service System) compliant, and is based
on the IEEE 802.11b standard. It employs DSSS (Direct Sequence
Spread Spectrum) and operates in the 2.4 GHz radio frequency band.
Each WAP 180 has a range of at least 300 feet (or at least 100
meters), and transfers data effectively at rates of at least 11
Mbps. Moreover, additional WAPs can be daisy-chained together.
Furthermore, some or all of the network of the IFE system 100 may
be wireless, using the WAP 180 to access the network.
[0013] In the system illustrated in FIG. 1, the data stored on the
on-demand servers 130-1 and 130-2 includes digital content such as
movies, images, audio recordings, news broadcasts, and music. This
content is streamed on-demand from the on-demand servers 130-1 and
130-2, through the ESU 120, and to those SVDUs 110 that request the
content. At the each recipient SVDU 110, the content is decoded and
processed. Each of the on-demand servers 130-1 and 130-2, in this
regard, is capable of providing content simultaneously to multiple
(e.g., 75 or more) passengers. Also, more on-demand servers can be
included in the system to increase the number of passengers that
are simultaneously serviceable. Having multiple (i.e., two or more)
on-demand servers also provides redundancy. Thus, in the event that
one of the servers experiences a fault and is unavailable to
deliver content, or in the event that connectivity between one of
the on-demand servers and the network is lost, another on-demand
server is able to assume the extra load. For example, assume one of
the SVDUs 110 ordinarily receives digital content from the first
on-demand server 130-1. If the first on-demand server 130-1 becomes
unavailable, the SVDU 110 will stop receiving data from it (e.g.,
the SVDU 110 transmits a Hypertext Transport Protocol (HTTP) GET
command to the first on-demand server 130-1 and receives a "not
found" error 404). The SVDU 110 will then request the digital
content from the second on-demand server 130-2. After a period of
time, the SVDU 110 may check the status of the first on-demand
server 130-1 and, it that server has come back up, resume
requesting data from it.
[0014] In general, the system and method described herein uses a
layering approach that combines a large, many port switch at a
head-end of a network with a small, localized switch close to the
seats. While the actual configuration of the switches is flexible,
the basic concept is that each SVDU is connected to one or more
head-end servers through a flat, layer 2, Ethernet switch matrix.
In this regard, FIG. 1 illustrates an embodiment in which a
head-end switch (the ESU 120) feeds columns of seat junction boxes
(SJBs) 190 located along the walls of the aircraft. The SJBs can be
installed in fixed locations along the aircraft walls. A cable is
then run from the SJB to the SVDU 110. This architecture
facilitates maintenance activity that requires the seats to be
removed by providing a wall disconnect point for the seat
electronics.
[0015] In an embodiment of the invention, each SVDU 110 can be any
suitable monitor for in-seat on-demand content and multicast
digital broadcast video and audio viewing in-seat video. The SVDU
may include an 8.9'' touch screen liquid crystal display (LCD)
monitor that features a 16:9 widescreen aspect ratio and is
designed to fit in the limited space of a jet seat (e.g., a
regional jet Economy Class seat). For example, the SVDUs 110 may be
designed to be installed in seat arms, seat backs, consoles, and/or
wall mounted. Moreover, the SVDUs can include a decorative shroud.
The SVDU 110 may be approximately 2-3 pounds and require
approximately 10-15 watts of power. Users may interact with the
SVDU via the touch screen monitor.
[0016] According to an embodiment of the invention, each SVDU 110
executes a high-speed, high-performance Web browser processor that
enables applications and Web menu pages to load. The SVDUs are also
capable of providing advanced features, such as displaying video
program while simultaneously displaying a Web page or graphic from
another source (similar to Picture-in-Picture). The SVDUs have a
large amount of memory storage that allows some applications, such
as games, to be resident within the SVDU. When a passenger selects
a local game to play, all of the loading and interaction is within
the SVDU. This not only speeds up the loading of the game, it also
ensures that games are available even if there is a failure of the
IFE network. Web page technology is used for easy passenger
Graphical User Interface (GUI) design and modification. A generic
GUI is standard with the IFE system 100, and customizations of all
menus and applications may be performed to meet each airline's
unique requirements.
[0017] Each SVDU 110 can also include: (1) integrated hardware MPEG
decoders; (2) local games storage and processing; (3) one or more
USB ports for passenger peripherals (such as remote keyboard, game
controllers, etc.); (4) a privacy filter; and (5) an integral
credit card reader for financial transactions. Additionally, the
SVDU may have an external audio jack instead of an integrated audio
jack, and may have a separate passenger control device for the
passenger to use as a data entry and navigation aid.
[0018] Referring still to FIG. 1, the CMT 150 acts as the primary
crew interface to the IFE system 100 for control, operation, and
maintenance of the IFE system. The CMT 150 executes a computer
operating system and has a display with a touch screen that serves
as an interface for the cabin attendants and maintenance personnel.
It is suitable, in this regard, for the CMT to be implemented using
the same device as the SVDU 110 discussed above. The CMT 150 also
executes a Web browser client that is used to access control web
pages from the IFE system. The CMT 150 provides control and
visibility of the IFE system 100 via HTML-based Web pages,
including video preview, and maintenance controls such as software
upload, configuration management and built-in test equipment.
Additionally, because the CMT 150 operates via a Web browser, the
crew Graphical User Interface (GUI) may be easily customized to
meet the unique requirements of different airlines. The CMT 150
also provides the following functions and controls: (1) power
control for the IFE system; (2) manual launch of the safety demo
video; (3) initialization of the flight information (flight
destination, departure time, arrival time); (4) management of the
entertainment system; (5) crew checking of the fault status report;
and (6) enable/disable interactive features and airline specific
applications.
[0019] The CMT 150 receives DC power from the DC power converter
160 and network connectivity via the ESU 120. The front panel of
CMT 150 can include a power switch, brightness control, and
Universal Serial Bus (USB) ports for carry-on external peripherals
(e.g., CD/DVD-ROMs, floppy disc drives, USB thumb drives and
keyboards). Crew operation of CMT 150 may also be via a portable
USB-type keyboard.
[0020] The AVC 170 provides at least 24 channels of encoding of
analog video and audio sources such as tape decks, DVD players, and
satellite audio and video signals. The AVC 170 encodes in real time
the external analog signals and provides MPEG-1 multicast digital
streams to the IFE system 100.
[0021] The SAT TV 140 may include: an Antenna Control Unit (ACU), a
radome assembly, a System Signal Processor (SSP), and a Receiver
Decoder Unit (RDU). The ACU is a full range Ku-band antenna
operating over the entire Direct Broadcasting Satellite (DBS) range
of 10.7 to 12.75 GHz. The ACU provides fully automated acquisition
and tracking of the designated satellite. The radome assembly is
designed with a blunt aerodynamic approach providing a low drag
solution and yielding a negligible impact on fuel burn. The radome
passes the full range of DBS frequencies with minimal loss and
features a single centerline diverter strip to protect against
lightning strikes. Moreover, the radome features blow-out panels
for pressurization and incorporates drainage paths to account for
water condensation. The SSP processes the aircraft navigation data
received from the ARINC 429 interface, and the SSP shares satellite
information with the RDU through a RS-485 data bus. The SSP also
controls the ACU acquisition through an RS-422 interface. The RDU
provides eight channels of DBS signal programming.
[0022] Various features and embodiments of the present invention
will now be described with reference to FIGS. 2A and 2B, and FIGS.
3-5. In the embodiment illustrated in FIGS. 2A and 2B, the IFE
system is deployed on an aircraft having multiples rows of
passenger seats, with four seats per row, with two seats on each
side of an aisle. The seats are organized into three groups--a
first group 62-1, a second group 62-2, and a third group 62-3. The
system also includes many of the components illustrated in, and
described in conjunction with FIG. 1. These components will be
referred to using the same primary reference numbers used in FIG.
1, although secondary reference numbers are appended to indicate
multiple instances of each component. The functionality of
like-numbered components is assumed to be the same. In the
embodiment of FIGS. 2A and 2B, a first, a second and a third DC
Power Converter 160-1, 160-2, and 160-3, are each arranged as a
power bus along the wall of the aircraft, such that one power
converter serves each of the first, second and third groups 62-1,
62-2, and 62-3 of seats. The system also includes a first ESU 120-1
and a second ESU 120-2. Each of the ESUs has the same basic
functionality as the ESU 120 described in conjunction with FIG. 1.
In one embodiment, each ESU 120 has 48 ports, has auto-detect
capability, and supports 10/100 Base-T Ethernet. In the embodiment
of FIGS. 2A and 2B, having a second ESU provides redundancy in the
event that one of the ESUs goes down or loses connectivity. In the
embodiment of FIGS. 2A and 2B, the first group 62-1 of seats is
wired to the first power converter 160-1, the second group 62-2 of
seats is wired to the second power converter 160-2, and the third
group 62-3 of seats is wired to the third power converter 160-3.
Furthermore, the first group 62-1 of seats and half of the second
group 62-2 of seats are linked via Ethernet cable to the first ESU
160-1. The third group 62-3 of seats, as well as the other half of
the second group 62-2 of seats is linked via Ethernet cable to the
second ESU 160-2.
[0023] Referring to FIG. 3, in an embodiment of the invention, the
IFE system includes seat junction boxes 190 distributed throughout
the aircraft. Each seat junction box 190 provides data and power to
nearby SVDUs 110. In particular, the DC Power Converters 160 supply
power to seat junction boxes 190, which, in turn, supply power to
SVDUs 110. Similarly, the ESU 120 is communicatively linked via
Ethernet cable to each of the seat junction boxes 190. The seat
junction boxes are, in turn, communicatively linked via Ethernet
cable to the individual SVDUs 110.
[0024] Referring to FIG. 4, another embodiment of the invention
will now be described. In this embodiment, the IFE system has many
of the same components as the previously described embodiments, as
indicated by similar labels and reference numbers. In the
embodiment of FIG. 4, the IFE system includes a first on-demand
server 130-1, a second on-demand server 130-2, and a third
on-demand server 130-3. The ESU 120 includes two complete and
independent 24-port managed Ethernet switches, labeled A and B
respectively. In the embodiment of FIG. 4, the duplication of
on-demand servers and Ethernet switches provides for data
redundancy. Thus, for example, if the first on-demand server 130-1
becomes disabled, then the ESU 120 can automatically reroute the
on-demand video requests that were originally intended for the
first on-demand server 130-1 to the second on-demand server 130-2.
Thus, the SVDUs 110 that were being served by the first on-demand
server 130-1 will now be served by the second on-demand server
130-2. Similarly, if one of the Ethernet switches in the ESU 120
becomes disabled, then the on-demand server or servers that relied
upon that Ethernet switch can send all of their data traffic to the
other Ethernet switch. For example, the Ethernet switch A normally
routes the Ethernet frames of the first on-demand server 130-1, but
becomes disabled, then the first on-demand server 130-1 will send
its Ethernet frames to switch B. Switch A and switch B may maintain
duplicate copies of each others routing tables for this
purpose.
[0025] Referring still to FIG. 4, the SVDUs 110 are daisy-chained
together via Ethernet cables. This configuration provides yet
another data redundancy feature. For example, if there is a break
in the Ethernet connectivity at point I in FIG. 4, all of the SVDUs
on either side of the break will still be connected to the network
by receiving data traffic from the opposite side. This aspect of
the invention will be described further with reference to FIG.
5.
[0026] Referring to FIG. 5, yet another embodiment of the invention
will now be described. In this embodiment, redundant network
architecture is provided by running two or more Ethernet lines
(each originating from a different physical port) from the ESU to
each column of seats. In this embodiment, the first Ethernet line
will be referred to as the primary network feed, and feeds the
first seat group of that column at a Primary Network Feed Site 90,
which then feeds in a daisy-chain manner to the remaining seats in
that column. The second Ethernet line will be referred to as the
back-up or redundant network feed, and runs from the ESU to the
last seat group of that same column at a Back-Up (Redundant)
Network Feed Site 92. If, for example, a problem or break occurs at
Site II, then the SVDUs will seek an alternate connection via the
second Ethernet link to the servers. So, in this example, the SVDU
in one of the seats in Row 3 and the SVDUs in the seats in Row 9
will receive data from the back-up network feed.
[0027] Referring still to FIG. 5, the IFE system can also include
hand-out terminals 200. The hand-out terminals are integrated (in
terms of their functionality) with the SVDUs 110, and can be
connected thereto. All SVDUs may have the port to allow the
hand-out terminals to be connected, but only those passengers
provided with the hand-out passenger terminal can connect to and
use the system. Although the connection between the SVDU and the
hand-out terminal may be standard, such USB 2.0, the SVDU will only
recognize and use the specific hand-out terminals provided with the
system. By connected the hand-out terminal to the SVDU, the
passenger may gain access to the on-demand servers, and thus to a
large library (e.g., potentially more than 500 hours of audio and
video material) of entertainment material. The hand-held unit 200
is powered over the cable connector thereby eliminating any need
for batteries and their maintenance. Since the hand-out terminal
has no storage for content, there is no concern (or airline
liability) for content loss. Airlines will easily obtain permission
to present early-release movies as the potential for carry-off
theft is eliminated. Hand-out passenger terminals 200 can also
include: a 100 BT Connection Plug, Audio on Demand (AOD) MP-3
player, Video on Demand (VOD) MPEG 1,2 player; Web Access
functionality; Games; Anti-Theft Device; Keyboard; Mouse; and/or
Credit Card Reader.
[0028] In an embodiment of the invention, the IFE system is able to
load flight information automatically according to the flight
phase. In particular, for example, flight information can be input
via the ARINC 429 interface connections to the flight guidance
computer and the air data computer. Moreover, content can be
scripted and automatically broadcasted from the server to the IFE
system. In this regard, many different scripts can be stored on the
aircraft and triggered by various parameters such as flight phase
and routing. This allows route specific programming with little or
no flight attendant intervention. Scripting can be provided to
manage the in-seat IFE access as needed. The cabin crew has the
possibility to override the automated functionality via the CMT
150. Furthermore, the IFE system includes loader ports 175 (FIG. 5)
through which entertainment content and switching tables may be
loaded into the system.
[0029] Although only a few exemplary embodiments of the present
invention have been described in detail above, those skilled in the
art will readily appreciate that many modifications are possible in
the exemplary embodiments without materially departing from the
novel teachings and advantages of this invention. Accordingly, all
such modifications are intended to be included within the scope of
this invention as defined in the following claims.
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