U.S. patent application number 13/301051 was filed with the patent office on 2012-05-24 for context-sensitive help for display device associated with power driven wheelchair.
This patent application is currently assigned to Invacare Corporation. Invention is credited to Gary E. Chopcinski, Thomas A. Drobnak.
Application Number | 20120130590 13/301051 |
Document ID | / |
Family ID | 37763781 |
Filed Date | 2012-05-24 |
United States Patent
Application |
20120130590 |
Kind Code |
A1 |
Chopcinski; Gary E. ; et
al. |
May 24, 2012 |
CONTEXT-SENSITIVE HELP FOR DISPLAY DEVICE ASSOCIATED WITH POWER
DRIVEN WHEELCHAIR
Abstract
An apparatus and method for providing help information on a
display device associated with a power driven wheelchair is
provided. In one embodiment, the method includes: a) displaying
screen content displayed on the display device during operation or
support of the power driven wheelchair, b) detecting selective
activation of a first input device, c) in response to detection of
the first input device activation, selecting help information
content from a collection of help information, the selected help
information content being contextually related to the screen
content displayed on the display device, and d) displaying the
contextually-related help information content on the display
device. In one embodiment, the apparatus includes: a display
device, a first input device, and a microcontroller in operative
communication with the display device and the first input
device.
Inventors: |
Chopcinski; Gary E.; (North
Ridgeville, OH) ; Drobnak; Thomas A.; (Olmsted
Township, OH) |
Assignee: |
Invacare Corporation
Elyria
OH
|
Family ID: |
37763781 |
Appl. No.: |
13/301051 |
Filed: |
November 21, 2011 |
Related U.S. Patent Documents
|
|
|
|
|
|
Application
Number |
Filing Date |
Patent Number |
|
|
11513854 |
Aug 31, 2006 |
8065051 |
|
|
13301051 |
|
|
|
|
60712987 |
Aug 31, 2005 |
|
|
|
60727005 |
Oct 15, 2005 |
|
|
|
60726983 |
Oct 15, 2005 |
|
|
|
60726666 |
Oct 15, 2005 |
|
|
|
60726981 |
Oct 15, 2005 |
|
|
|
60726993 |
Oct 15, 2005 |
|
|
|
60727249 |
Oct 15, 2005 |
|
|
|
60727250 |
Oct 15, 2005 |
|
|
|
Current U.S.
Class: |
701/36 |
Current CPC
Class: |
A61G 5/1075 20130101;
G05B 19/106 20130101; A61G 5/04 20130101; G05B 2219/23193 20130101;
A61G 5/10 20130101; A61G 5/128 20161101; Y02T 10/64 20130101; G05B
2219/23128 20130101; B60Y 2200/84 20130101; A61G 5/1059 20130101;
G05B 2219/23159 20130101; A61G 5/12 20130101; A61G 2203/20
20130101; H02P 21/18 20160201; G05B 2219/23129 20130101; G05B
2219/2637 20130101; A61G 5/1089 20161101; Y02T 10/72 20130101; A61G
7/05784 20161101; G05B 2219/23388 20130101; G05B 2219/23332
20130101; A61G 2203/14 20130101 |
Class at
Publication: |
701/36 |
International
Class: |
G06F 7/00 20060101
G06F007/00 |
Claims
1. An apparatus associated with a power driven wheelchair,
including: a display device to selectively display screen content
during operation or support of the power driven wheelchair; a first
input device for selective activation; and a microcontroller in
operative communication with the display device and the first input
device; wherein the microcontroller controls the content displayed
on the display device during the operation or support and detects
activation of the first input device; wherein, in response to
detection of the first input device activation, the microcontroller
performs a security check to determine a privilege associated with
a user, wherein the privilege identifies which features of the
power driven wheelchair that the user has access to; and wherein
the microcontroller displays help information contextually related
to the screen content displayed on the display device based at
least in part on the privilege associated with the user.
2. The apparatus of claim 1 wherein the microcontroller selectively
displays help information contextually related to the screen
content displayed on the display device based at least in part on
the privilege associated with the user.
3. The apparatus of claim 1 wherein the displayed help information
consists of help information associated with features of the power
driven wheelchair that the user has access to.
4. The apparatus of claim 1 wherein the displayed help information
comprises help information associated with features of the power
driven wheelchair that the user does not have access to, and
wherein the help information indicates which features of the power
driven wheelchair that the user has access to or does not have
access to.
5. The apparatus of claim 1, further including: a storage medium
interface in operative communication with the microcontroller; and
a portable storage medium in operative communication with the
storage medium interface; and wherein the portable storage medium
comprises a key that indicates the privilege associated with the
user.
6. The apparatus of claim 1, further including: a programmer in
operative communication with the microcontroller; and wherein the
programmer comprises a key that indicates the privilege associated
with the user.
7. The apparatus of claim 1, further including: a programmer in
operative communication with the microcontroller, wherein the
programmer comprises a storage medium interface; and a portable
storage medium in operative communication with the storage medium
interface; and wherein the portable storage medium comprises a key
that indicates the privilege associated with the user.
8. The apparatus of claim 1 wherein the privilege associated with
the user is one of a plurality of privileges, wherein each
privilege is associated with a user type.
9. The apparatus of claim 8 wherein different user types have
different access to features of the power driven wheelchair.
10. The apparatus of claim 1 wherein the microcontroller displays
an error message on the display device if the security check fails
to determine the privilege associated with the user.
11. A method for providing help information on a display device
associated with a power driven wheelchair, including: displaying
screen content on the display device during operation or support of
the power driven wheelchair; detecting selective activation of a
first input device; in response to detection of the first input
device activation, performing a security check to determine a
privilege associated with a user, wherein the privilege identifies
which features of the power driven wheelchair that the user has
access to; and in response to determining the privilege of the
user, displaying help information contextually related to the
screen content displayed on the display device based at least in
part on the privilege associated with the user.
12. The method of claim 11 wherein displaying help information
contextually related to the screen content displayed on the display
device is selective based at least in part on the privilege
associated with the user.
13. The method of claim 11 wherein the displayed help information
consists of help information associated with features of the power
driven wheelchair that the user has access to.
14. The method of claim 11 wherein the displayed help information
comprises help information associated with features of the power
driven wheelchair that the user does not have access to, and
wherein the help information indicates which features of the power
driven wheelchair that the user has access to or does not have
access to.
15. The method of claim 11, further including: retrieving a key
from a portable storage medium via a storage medium interface in
operative communication with the microcontroller, wherein the key
indicates the privilege associated with the user.
16. The method of claim 11, further including: retrieving a key
from a programmer in operative communication with the
microcontroller, wherein the key indicates the privilege associated
with the user.
17. The method of claim 11 wherein retrieving the key from the
programmer comprises transmitting a key status signal from the
programmer to the microcontroller.
18. The method of claim 11 wherein the privilege associated with
the user is one of a plurality of privileges, wherein each
privilege is associated with a user type.
19. The method of claim 18 wherein different user types have
different access to features of the power driven wheelchair.
20. The method of claim 11, further including: displaying an error
message on the display device if the security check fails to
determine the privilege associated with the user.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of U.S. Ser. No.
11/513,854, filed Aug. 31, 2006, titled CONTEXT-SENSITIVE HELP FOR
DISPLAY DEVICE ASSOCIATED WITH POWER DRIVEN WHEELCHAIR (Attorney
Docket No. 12873.05245), which claims the benefit of eight U.S.
provisional patent applications, including Ser. No. 60/712,987,
filed Aug. 31, 2005 (Attorney Docket No. 12873.05174), Ser. No.
60/727,005, filed Oct. 15, 2005 (Attorney Docket No. 12873.05220),
Ser. No. 60/726,983, filed Oct. 15, 2005 (Attorney Docket No.
12873.05244), Ser. No. 60/726,666, filed Oct. 15, 2005 (Attorney
Docket No. 12873.05245), Ser. No. 60/726,981, filed Oct. 15, 2005
(Attorney Docket No. 12873.05246), Ser. No. 60/726,993, filed Oct.
15, 2005 (Attorney Docket No. 12873.05247), Ser. No. 60/727,249,
filed Oct. 15, 2005 (Attorney Docket No. 12873.05248), and Ser. No.
60/727,250, filed Oct. 15, 2005 (Attorney Docket No. 12873.05258).
This application is also related to seven co-pending U.S. utility
patent applications filed on Aug. 31, 2006, including U.S. Ser. No.
11/513,740, (Attorney Docket No. 12873.05220) entitled "Mode
Programmable Actuator Controller for Power Positioning Seat or Leg
Support of a Wheelchair," U.S. Ser. No. 11/514,016, (Attorney
Docket No. 12873.05244), now U.S. Pat. No. 8,073,588 entitled
"Method and Apparatus for Setting or Modifying Programmable
Parameter in Power Driven Wheelchair," U.S. Ser. No. 11/511,606,
(Attorney Docket No. 12873.05246), now U.S. Pat. No. 7,403,844
entitled "Method and Apparatus for Programming Parameters of a
Power Driven Wheelchair for a Plurality of Drive Settings," Ser.
No. 11/513,780 (Attorney Docket No. 12873.05247) entitled
"Adjustable Mount for Controller of Power Driven Wheelchair," Ser.
No. 11/513,746, (Attorney Docket No. 12873.05248), now abandoned,
entitled "Method and Apparatus for Automated Positioning of User
Support Surfaces in Power Driven Wheelchair," U.S. Ser. No.
11/513,802, (Attorney Docket No. 12873.05258) entitled "Power
Driven Wheelchair," Ser. No. 11/513,750, (Attorney Docket No.
12873.05391) entitled "Method and Apparatus for Improved Support of
Power Driven Wheelchair," Ser. No. 12/064,697, (Attorney Docket No.
12873.05628) entitled "Method and Apparatus for Programming
Parameters of a Power Driven Wheelchair for a Plurality of Drive
Settings", and U.S. Serial No. 13/228,677, (Attorney Docket No.
12873.05756) entitled "Method and Apparatus for Setting or
Modifying Programmable Parameters in Power Driven Wheelchair". U.S.
Serial No. 13/228,677 is a divisional Application of U.S. Ser. No.
11/513,750. The contents of all above-identified patent
application(s) and patent(s) are fully incorporated herein by
reference.
BACKGROUND
[0002] Power driven wheelchairs generally include right and left
drive wheels driven by a motor controller via corresponding right
and left drive motors. A power driven wheelchair may also include
actuators, motors, or other devices to control user support
surfaces, such as seats, backs, leg rests, foot rests, or head
rests. These various actuators, motors, and other devices may be
controlled via a user interface. The user interface may include
input devices, such as a joystick, pushbuttons and other types of
switches, potentiometers and other types of control devices, and
output devices, such as a graphic display, alphanumeric display, or
indicators. Input devices for special needs users, such as a
proportional head control, a sip n' puff system, a fiber optic tray
array, a proximity head array, or a proximity switch array, may
also be provided as a user interface or as a remote input to the
user interface.
[0003] Examples of power driven wheelchairs are provided in a
product brochure entitled "Invacare.RTM. Storm.RTM. Series TDX.TM.
Power Wheelchairs, including Formula.TM. Powered Seating," Form No.
03-018, 2004 from Invacare Corporation of Elyria, Ohio, the
contents of which are fully incorporated herein by reference.
Additional examples of power driven wheelchairs are provided in
another product brochure entitled "Invacare.RTM. Tarsys.RTM. Series
Powered Seating System," Form No. 00-313, 2002 from Invacare
Corporation, the contents of which are fully incorporated herein by
reference.
[0004] Currently, a separate remote programmer unit may be used to
set or modify programmable parameters associated with operation of
a given power driven wheelchair. Examples of remote programmers and
their use in conjunction with a power driven wheelchair are
provided in U.S. Pat. No. 6,871,122 to Wakefield, II and U.S. Pat.
No. 6,819,981 to Wakefield, II et al., both assigned to Invacare
Corporation. The contents of both of these patents are fully
incorporated herein by reference.
SUMMARY
[0005] In one aspect, an apparatus associated with a power driven
wheelchair is provided. In one embodiment, the apparatus includes:
a display device to selectively display screen content during
operation or support of the power driven wheelchair, a first input
device for selective activation, and a microcontroller in operative
communication with the display device and the first input device.
In this embodiment, the microcontroller controls the content
displayed on the display device during the operation or support and
detects activation of the first input device. Additionally, in
response to detection of the first input device activation, the
microcontroller selects help information content from a collection
of help information, the selected help information content being
contextually related to the screen content displayed on the display
device. The microcontroller also controls display of the
contextually-related help information content on the display
device.
[0006] In another aspect, a method for providing help information
on a display device associated with a power driven wheelchair is
provided. In one embodiment, the method includes: a) displaying
content on the display device during operation or support of the
power driven wheelchair, b) detecting selective activation of a
first input device, c) in response to detection of the first input
device activation, selecting help information content from a
collection of help information, the selected help information
content being contextually related to the content displayed on the
display device, and d) displaying the contextually-related help
information content on the display device.
[0007] In another embodiment, the method includes: a) displaying
content on the display device during operation or support of the
power driven wheelchair, the content during at least a portion of
the operation or support including one or more screen objects, b)
detecting activation of a screen navigation control, c) in response
to detection of the screen navigation control activation,
designating a first screen object from the one or more screen
objects as active within the content, d) detecting selective
activation of a help switch, e) in response to detection of the
help switch activation, selecting help information content from a
collection of help information, the selected help information
content being contextually related to the first screen object
within the content displayed on the display device, and 1)
displaying the contextually-related help information content on the
display device.
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] These and other features, aspects, and advantages of the
present invention will become better understood with regard to the
accompanying drawings, following description, and appended
claims.
[0009] FIG. 1 shows an exemplary embodiment of a power driven
wheelchair.
[0010] FIG. 2 is a block diagram of an exemplary embodiment of a
power driven wheelchair.
[0011] FIG. 3 is a block diagram of an exemplary embodiment of a
system controller for a power driven wheelchair.
[0012] FIG. 4 is a block diagram of an exemplary embodiment of a
programmer used in conjunction with related embodiments of power
driven wheelchairs.
[0013] FIG. 5 is a block diagram of an exemplary embodiment of an
on-board storage device associated with a system controller or a
programmer.
[0014] FIG. 6 is a block diagram of an exemplary embodiment of a
portable storage medium associated with a system controller or a
programmer.
[0015] FIGS. 7 through 10 are perspective views of exemplary
embodiments of a system controller for a power driven
wheelchair.
[0016] FIG. 11 is a perspective view of an exemplary embodiment of
a programmer used in conjunction with related embodiments of power
driven wheelchairs.
[0017] FIGS. 12 through 18 are examples of normal screen content
and help information content where the help information is
context-sensitive with respect to at least a portion of the normal
screen content.
[0018] FIG. 19 is an exemplary menu hierarchy for a programming
mode associated with operation or support of a power driven
wheelchair.
[0019] FIG. 20 is a flow chart of an exemplary info monitor process
associated with providing context-sensitive help on a display
device associated with operation or support of a power driven
wheelchair.
[0020] FIG. 21 is a flow chart of an exemplary menu navigation
sub-process associated with interactive use of a display device and
a screen navigation control in conjunction with operation or
support of a power driven wheelchair.
[0021] FIG. 22 is a flow chart of an exemplary set/modify parameter
handler sub-process associated with interactive use of a display
device and screen navigation control in conjunction with operation
or support of a power driven wheelchair.
[0022] FIG. 23 is a flow chart of an exemplary process for
providing help information on a display device associated with a
power driven wheelchair.
[0023] FIG. 24 is a flow chart of another exemplary process for
providing help information on a display device associated with a
power driven wheelchair.
[0024] FIG. 25 is a block diagram of an exemplary apparatus for
providing help information on a display device associated with a
power driven wheelchair.
DETAILED DESCRIPTION
[0025] The following paragraphs include definitions of exemplary
terms used within this disclosure. Except where noted otherwise,
variants of all terms, including singular forms, plural forms, and
other affixed forms, fall within each exemplary term meaning.
Except where noted otherwise, capitalized and non-capitalized forms
of all terms fall within each meaning.
[0026] "Circuit," as used herein includes, but is not limited to,
hardware, firmware, software or combinations of each to perform a
function(s) or an action(s). For example, based on a desired
feature or need, a circuit may include a software controlled
microprocessor, discrete logic such as an application specific
integrated circuit (ASIC), or other programmed logic device. A
circuit may also be fully embodied as software. As used herein,
"circuit" is considered synonymous with "logic."
[0027] "Comprising," "containing," "having," and "including," as
used herein, except where noted otherwise, are synonymous and
open-ended. In other words, usage of any of these terms (or
variants thereof) does not exclude one or more additional elements
or method steps from being added in combination with one or more
enumerated elements or method steps.
[0028] "Context-sensitive help," as used herein includes, but is
not limited to, a form of assistance in a system with a display in
which a program that controls the display provides on-screen
information to the user concerning the current command or operation
being attempted, a type of assistance built into software that
displays information related to the particular function in use, or
a software feature that provides information related to the
specific program, command or dialog box that is open or currently
displayed. For example, if the content of a display screen includes
one or more screen objects, information about an active or
currently selected screen object is provided when context-sensitive
help is requested.
[0029] "Controller," as used herein includes, but is not limited
to, any circuit or device that coordinates and controls the
operation of one or more input or output devices. For example, a
controller can include a device having one or more processors,
microprocessors, or central processing units (CPUs) capable of
being programmed to perform input or output functions.
[0030] "Logic," as used herein includes, but is not limited to,
hardware, firmware, software or combinations of each to perform a
function(s) or an action(s), or to cause a function or action from
another component. For example, based on a desired application or
need, logic may include a software controlled microprocessor,
discrete logic such as an application specific integrated circuit
(ASIC), or other programmed logic device. Logic may also be fully
embodied as software. As used herein, "logic" is considered
synonymous with "circuit."
[0031] "Operative communication," as used herein includes, but is
not limited to, a communicative relationship between devices,
logic, or circuits, including mechanical and pneumatic
relationships. Direct electrical, electromagnetic, and optical
connections and indirect electrical, electromagnetic, and optical
connections are examples of such communications. Linkages, gears,
chains, push rods, cams, keys, attaching hardware, and other
components facilitating mechanical connections are also examples of
such communications. Pneumatic devices and interconnecting
pneumatic tubing may also contribute to operative communications.
Two devices are in operative communication if an action from one
causes an effect in the other, regardless of whether the action is
modified by some other device. For example, two devices separated
by one or more of the following: i) amplifiers, ii) filters, iii)
transformers, iv) optical isolators, v) digital or analog buffers,
vi) analog integrators, vii) other electronic circuitry, viii)
fiber optic transceivers, ix) Bluetooth communications links, x)
802.11 communications links, xi) satellite communication links, and
xii) other wireless communication links. As another example, an
electromagnetic sensor is in operative communication with a signal
if it receives electromagnetic radiation from the signal. As a
final example, two devices not directly connected to each other,
but both capable of interfacing with a third device, e.g., a
central processing unit (CPU), are in operative communication.
[0032] "Or," as used herein, except where noted otherwise, is
inclusive, rather than exclusive. In other words, "or` is used to
describe a list of alternative things in which one may choose one
option or any combination of alternative options. For example, "A
or B" means "A or B or both" and "A, B, or C" means "A, B, or C, in
any combination." If "or" is used to indicate an exclusive choice
of alternatives or if there is any limitation on combinations of
alternatives, the list of alternatives specifically indicates that
choices are exclusive or that certain combinations are not
included. For example, "A or B, but not both" is used to indicate
use of an exclusive "or" condition. Similarly, "A, B, or C, but no
combinations" and "A, B, or C, but not the combination of A, B, and
C" are examples where certain combination of alternatives are not
included in the choices associated with the list.
[0033] "Processor," as used herein includes, but is not limited to,
one or more of virtually any number of processor systems or
stand-alone processors, such as microprocessors, microcontrollers,
central processing units (CPUs), and digital signal processors
(DSPs), in any combination. The processor may be associated with
various other circuits that support operation of the processor,
such as random access memory (RAM), read-only memory (ROM),
programmable read-only memory (PROM), erasable programmable
read-only memory (EPROM), clocks, decoders, memory controllers, or
interrupt controllers, etc. These support circuits may be internal
or external to the processor or its associated electronic
packaging. The support circuits are in operative communication with
the processor. The support circuits are not necessarily shown
separate from the processor in block diagrams or other
drawings.
[0034] "Signal," as used herein includes, but is not limited to,
one or more electrical signals, including analog or digital
signals, one or more computer instructions, a bit or bit stream, or
the like.
[0035] "Software," as used herein includes, but is not limited to,
one or more computer readable or executable instructions that cause
a computer or other electronic device to perform functions,
actions, or behave in a desired manner. The instructions may be
embodied in various forms such as routines, algorithms, modules or
programs including separate applications or code from dynamically
linked libraries. Software may also be implemented in various forms
such as a stand-alone program, a function call, a servlet, an
applet, instructions stored in a memory, part of an operating
system or other type of executable instructions. It will be
appreciated by one of ordinary skill in the art that the form of
software is dependent on, for example, requirements of a desired
application, the environment it runs on, or the desires of a
designer/programmer or the like.
[0036] With reference to FIG. 1, an exemplary embodiment of a power
driven wheelchair 10 may include a system controller 12. The system
controller 12 may control operation or support of the power driven
wheelchair 10. Other embodiments of power driven wheelchairs and
other embodiments of system controllers are available in various
combinations.
[0037] With reference to FIG. 2, an exemplary embodiment of a power
driven wheelchair 30 is depicted in block diagram fashion. As
shown, the power driven wheelchair 30 may include a system
controller 32, a drive controller 34, a left drive motor 36, a
right drive motor 38, and a suitable power source (e.g., battery)
(not shown). The system controller 32 may include a user interface
and may control the drive controller 34 in response to activation
of one or more input devices associated with the user interface and
in response to software programs for one or more operating or
support modes. The software programs may use a plurality of
programmable parameters arranged in sets associated with, for
example, different environmental conditions to define driving
response characteristics. The drive controller 34 may control the
left and right drive motors 36, 38 in response to commands from the
system controller 32. Communication between the system controller
32 and drive controller 34 may be via serial or parallel bus
connections or via discrete signal connections. For example, a
Shark serial communication bus, developed by Dynamic Controls of
New Zealand, may be used to communicate with the drive controller
34. In another embodiment, the system controller 34 may communicate
directly with a left drive motor and a right drive motor via a
serial communication bus, such as a controller area network (CAN)
bus, where the left and right drive motors include a serial bus
interface and local intelligence.
[0038] The power driven wheelchair 30 may also include various
options, such as powered seating, powered front rigging, and
powered steering. In one embodiment, the powered seating option may
include a tilt actuator 40, a recline actuator 42, an elevation
actuator 44, a horizontal actuator 46, and a ventilator tray
actuator 48. In one embodiment, the powered front rigging option
may include a common leg rest actuator 50 and a common foot rest
actuator 52. In another embodiment, the powered front rigging
option may include independent left and right leg rest actuators
and independent left and right foot rest actuators. In one
embodiment, the powered steering option may include one or more
powered steering actuators 54. These options may be added to the
wheelchair in any combination. Likewise, various combinations of
actuators may be selected for each option. For example, a powered
seating option may be limited to tilt and recline actuators 40, 42,
tilt and elevation actuators 40, 44, recline and elevation
actuators 40, 46, or tilt, recline, and elevation actuators 40, 42,
44. If the power driven wheelchair has split left and right leg
rests, individual right and left leg rest actuators may be provided
in lieu of the common leg rest actuator 50. Back and seat shear
reduction, for example, may be provided by coordinated movement of
the recline and horizontal actuators 42, 46. The system controller
32 may control the actuators in response to activation of one or
more input devices associated with the user interface and in
response to software programs for one or more operating or support
modes. The software programs may use a plurality of programmable
parameters, for example, to define desired positions for user
support surfaces and actuator response characteristics.
Communication between the system controller 32 and actuators may be
via serial or parallel bus connections or via discrete signal
connections. For example, in one embodiment, actuators may include
sensors and local electronics which provides an interface to a CAN
bus. It is understood that any actuator may include a variable
speed reversible motor, a stepper motor, a linear motor, a servo
motor, or another suitable device associated with position control
of an actuator mechanism. The actuator mechanism, for example,
controlling the position of user support surfaces, such as seat,
back, leg rest, foot rest, or head rest support surfaces, via a
suitable linkage, drive train, coupling, or another type of
mechanical interface.
[0039] In one embodiment, providing modularization of actuators,
motors, and other output devices with sensors, detectors, or other
devices providing feedback for closed loop control of the
corresponding output device facilitates the use of a serial or
parallel bus architecture in the power driven wheelchair 30. This
also simplifies the addition or removal of optional output devices
and streamlines upgrades and retrofits. Moreover, distributing
intelligence, including interface circuits for output devices and
associated feedback components, from the centralized controller to
the modular output devices further improves performance through
parallel processing. In additional embodiments, distributing
additional intelligence, including closed-loop control algorithms,
from the centralized controller to the modular output devices
further improves performance through additional parallel processing
and reduced bus traffic.
[0040] One or more remote input devices 58 may also be provided as
options in the power driven wheelchair 30. For example, user
interfaces for special needs users, such as a proportional head
control, a sip n' puff system, a fiber optic tray array, a
proximity head array, or a proximity switch array, may be provided
as a remote input to the system controller 32. Additional examples
of remote input devices 58 include, a 4-way toggle switch assembly,
a quad pushbutton assembly, and a compact proportional joystick
assembly. The 4-way toggle switch assembly or the quad pushbutton
assembly, for example, may be used for controlling powered seating
systems. The compact proportional joystick assembly, for example,
may be used as a proportional attendant control. Communication
between the system controller 32 and the remote input device(s) 58
may be via serial or parallel bus connections or via discrete
signal connections. For example, a remote input device may be
connected to a serial port on the system controller 32. If the
remote input device includes the appropriate electronics and local
intelligence (e.g., processes for composing and de-composing bus
messages), communications with the system controller 32 may, for
example, be via a CAN bus or another type of bus or network
connection.
[0041] A programmer 60 may be used in conjunction with the power
driven wheelchair 30. The programmer 60 described herein may be an
optional accessory or special tool for dealers or technicians. The
programmer 60 may be adapted for use on various models and
configurations of power driven wheelchairs. Communication between
the system controller 32 and the programmer 60 may be via serial or
parallel bus connections or via discrete signal connections. For
example, the programmer 60 may be connected to a serial port on the
system controller 32. If the programmer 60 includes the appropriate
electronics and local intelligence (e.g., processes for composing
and de-composing bus messages), communications with the system
controller 32 may, for example, be via a CAN bus or another type of
bus or network connection. The various aspects of FIG. 2 described
above may be automated, semi-automated, or manual and may be
implemented through hardware, software, firmware, or combinations
thereof.
[0042] With reference to FIG. 3, a block diagram of an exemplary
embodiment of a system controller 32 may include a microcontroller
62, one or more input devices 64, a display 66, one or more
indicators 68, an on-board storage device 70, a storage medium
interface 72, an output device interface 74, one or more remote
input device interfaces 76, and a programmer interface 78. The
microcontroller 62 may include a central processing unit (CPU) 80,
an on-chip storage device 82, and an analog-to-digital (A/D)
converter 84. The A/D converter 84 may provide the microcontroller
62 with an interface to receive analog input signals. In one
embodiment, the microcontroller 62 may include an SAF-XC164CS
16-bit single-chip microcontroller by Infineon Technologies of
Munchen, Germany.
[0043] The display 66, for example, may include a 128.times.64
pixel graphic display or a 160.times.160 pixel graphic display. In
additional embodiments, the display may include a graphic display
in a different size or a different arrangement of pixels. Any type
of graphic display may be used, such as a liquid crystal display
(LCD). Additionally, an alphanumeric display or another type of
display may be used. The one or more indicators 68, for example,
may include light emitting diodes (LEDs), lamps, other types of
visual indicators, or audible devices. The one or more input
devices 64, for example, may include a proportional analog
joystick, a three position toggle or rotary switch, a
return-to-center momentary three position switch, a rotary
potentiometer, and a plurality of momentary pushbuttons. In
additional embodiments, the one or more input devices 64, may
include other types of joysticks, switches, potentiometers,
pushbuttons, or other types of control devices.
[0044] The output device interface 74 may be connected, for
example, to a motor controller, actuators, motors, or similar
devices associated with the power driven wheelchair. The output
device interface 74 may include one or more serial ports, one or
more parallel ports, or discrete wiring connections in any
combination. For example, the output device interface 74 may
include a CAN bus serial port and a Shark bus serial port. The one
or more remote input device interfaces 76 and programmer interface
78 may each include a serial port, parallel port, or discrete
wiring connections.
[0045] The microcontroller 62 may receive input signals from the
one or more input devices 64, remote input devices 58 (FIG. 2)
connected to the one or more remote input device interfaces 76, or
a programmer 60 (FIG. 2) connected to the programmer interface 78.
The microcontroller 62 may control the display 66, the one or more
indicators 68, and various motors, actuators, and other output
devices connected to the output device interface 74, at least in
part, in response to the input signals from the one or more input
devices 64, remote input devices 58 (FIG. 2), or programmer 60
(FIG. 2).
[0046] The on-board storage device 70 and on-chip storage device 82
each may include a volatile storage device, such as random access
memory (RAM), and a non-volatile storage device, such as
non-volatile memory, a fixed disk device, a removable disc device,
an optical storage device, etc. Non-volatile memory, for example,
may include read-only memory (ROM), programmable read-only memory
(PROM), erasable programmable read-only memory (EPROM),
electrically erasable programmable read only memory (EEPROM), or
flash memory. For example, software programs, one or more
programmable parameter sets, and help information may be stored in
one or more non-volatile memory storage devices associated with the
on-board storage device 70 or on-chip storage device 82. Each
programmable parameter set may include a plurality of programmable
operating parameters for the power driven wheelchair 20. The
microcontroller 62 may run the software programs and may control
the display 66, indicators 68, and various motors, actuators, and
other output devices connected to the output device interface 74
based, at least in part, on one or more of the programmable
operating parameters.
[0047] A portable storage medium 86 may be used in conjunction with
the system controller 32. The portable storage medium 86 may
include a plurality of storage locations which may store a security
key, one or more library parameter sets, and a collection of help
information. The portable storage medium 86 described herein may be
an optional accessory or special tool for dealers or technicians.
In some cases, the portable storage medium 86 may also be used in
conjunction with normal operation of the power driven wheelchair by
its owner or end user. The portable storage medium 86 described
herein may be suitable for use on various models and configurations
of power driven wheelchairs. However, in another scheme for
protection and security of the information stored therein, a given
portable storage medium 86 may be serialized or otherwise tailored
and keyed to an individual system controller 32 and corresponding
power driven wheelchair. Communication between the microcontroller
62 and the portable storage medium 86 may be via the storage medium
interface 72.
[0048] The portable storage medium 86 may include a non-volatile
storage medium, such as non-volatile memory. In one embodiment, the
portable storage medium 86 may include, for example, a type of
removable storage medium known as a removable memory card. For
example, the portable storage medium 86 may include a secure
digital (SD) card. In the embodiment being described, the storage
medium interface 72 may include, for example, a corresponding
removable memory interface (e.g., an SD card reader) to communicate
and exchange information with the microcontroller 62.
[0049] In additional embodiments, the portable storage medium may
include other types of removable memory, such as a compact flash
(CF) card, a flash memory pen drive, a memory stick, a microdrive,
a multimedia memory card (MMC), a smart media (SM) card, an xD
picture card, a subscriber identity module (SIM) card, a memory
chip (e.g., ROM, PROM, EPROM, EEPROM), or another suitable form of
removable, separable, or detachable memory. In other additional
embodiments, the portable storage medium may include other forms of
removable storage medium, such as optical discs (e.g., compact
discs (CDs), digital video discs (DVDs)) or floppy disks (e.g., zip
disks).
[0050] In still further embodiments, the portable storage medium
may include a portable storage device, such as an external memory
card reader, an external optical disc drive, an external floppy
disk drive, a portable computer (e.g., laptops, notebooks, personal
digital assistants (PDAs)), a mobile telephone (e.g., cellular
telephone, personal communication system, satellite telephone), a
digital camera, an MP3 player, or any type of portable storage
device capable of wired or wireless communication with another
compatible communication device.
[0051] The storage medium interface 72, for example, may include a
connector or socket that mates with the portable storage medium 86
and an electronic circuit that supports communication between the
microcontroller 62 and the portable storage medium 86. For example,
the storage medium interface 72 may include a memory card reader, a
memory chip socket, an optical disc drive, a floppy disk drive, a
serial port (e.g., universal serial bus (USB) port, RS-232), a
parallel port (e.g., small computer system interface (SCSI) port),
a modem, an Ethernet port, a wireless Ethernet transceiver (e.g.,
IEEE 802.11b), a Bluetooth transceiver, an infrared (IR)
transceiver, a radio frequency (RF) transceiver, a mobile telephone
interface, a cable television interface, a satellite television
interface, or any communication device capable of wired or wireless
communication with a corresponding portable storage medium. The
various aspects of FIG. 3 described above may be automated,
semi-automated, or manual and may be implemented through hardware,
software, firmware, or combinations thereof.
[0052] With reference to FIG. 4, an exemplary embodiment of a
programmer 60 may include a microcontroller 88, one or more input
devices 90, a display 92, one or more indicators 94, an on-board
storage device 96, a storage medium interface 98, and a controller
interface 100. The microcontroller 88 may include a CPU 102 and an
on-chip storage device 104. In one embodiment, the microcontroller
88 may include an SAF-XC164CS 16-bit single-chip microcontroller by
Infineon Technologies of Munchen, Germany.
[0053] The display 92, for example, may include a 160.times.160
pixel graphic display. In additional embodiments, the display may
include a graphic display in a different size or a different
arrangement of pixels. Any type of graphic display may be used,
such as an LCD. Additionally, an alphanumeric display or another
type of display may be used. The one or more indicators 94, for
example, may include LEDs, lamps, other types of visual indicators,
or audible devices. The one or more input devices 90, for example,
may include a plurality of momentary pushbuttons. In additional
embodiments, the one or more input devices 90, may include other
types of pushbuttons or other types of control devices.
[0054] The controller interface 100 may include a serial port,
parallel port, or discrete wiring connections for interfacing with
a system controller 32 (FIG. 2) of a power driven wheelchair. The
microcontroller 88 may receive input signals from the one or more
input devices 90 and the system controller 32 (FIG. 2) connected to
the controller interface 100. The microcontroller 88 may latch or
store activations of the one or more input devices 90 or other
input signals over time. The microcontroller 88 may control the
display 92 and the one or more indicators 94, at least in part, in
response to the input signals from the one or more input devices or
the system controller 32 (FIG. 2).
[0055] The microcontroller 88 may periodically (e.g., every 10 ms)
receive a status check message from the system controller 32 (FIG.
2) via the controller interface 100. For example, if an activation
of the one or more input devices 90 has occurred since the last
status check, the microcontroller 88 may send a response to the
status check message via the controller interface 100 that may
include information regarding the latched or stored activations
from the one or more input devices 90. Once the response is sent,
certain latched or stored activations may be cleared. If no
activations occurred since the last status check, the
microcontroller 88 may send a response to the status check message
indicating there is no new data to send. The microcontroller 88,
for example, may also receive messages from system controller 32
(FIG. 2) via the controller interface 100 containing information to
be displayed on the display 92 or commands regarding control of the
display 92.
[0056] The on-board storage device 96 and on-chip storage device
104 each may include a volatile storage device, such as RAM, and a
non-volatile storage device, such as non-volatile memory, a fixed
disk device, a removable disc device, an optical storage device,
etc. Non-volatile memory, for example, may include ROM, PROM,
EPROM, EEPROM, or flash memory. For example, software programs, a
plurality of programmable parameter sets, and help information may
be stored in one or more non-volatile memory storage devices
associated with the on-board storage device 96 or on-chip storage
device 104. The microcontroller 88 may run the software programs
and may control the display 92 and indicators 94 based, at least in
part, on one or more of the programmable operating parameters.
[0057] A portable storage medium 106 may be used in conjunction
with the programmer 60. Like the portable storage medium 86 (FIG.
3) associated with the system controller 32 (FIG. 3), the portable
storage medium 106 may also be an optional accessory or special
tool for dealers or technicians. Therefore, the various
characteristics, options, and alternatives described above for the
portable storage medium 86 (FIG. 3) and storage medium interface 72
(FIG. 3) also apply to the portable storage medium 106 and storage
medium interface 98 in the programmer 60. The microcontroller 88 is
in communication with the portable storage medium 106 via the
storage medium interface 98. This enables the microcontroller 88 to
retrieve data from the portable storage medium 106 and provide it
to the system controller 32 (FIG. 2) via the controller interface
100 or to save data received from the system controller 32 (FIG. 2)
to the portable storage medium 106.
[0058] In one embodiment, the portable storage medium 106
associated with the programmer 60 and the portable storage medium
86 (FIG. 3) associated with the system controller 32 (FIG. 2) may
be interchangeable. In other words, the portable storage medium 106
may be used in conjunction with the system controller 32 (FIG. 2)
and vice versa. Moreover, this interchangeability may extend to
other power driven wheelchairs. In other words, the portable
storage medium 86 or 106 associated with the power driven
wheelchair 10 (FIG. 1) may be used in system controllers or
programmers associated with other power driven wheelchairs. This
facilitates development of a master copy of library parameter sets
on one or more portable storage medium that can be transported to
multiple power driven wheelchairs for selective downloading of
library parameter sets. Additionally, programmable parameter sets
can be selectively uploaded to the master copy to build or grow the
library parameter sets from individual power driven wheelchairs.
This is particularly useful after modifying a selected programmable
parameter set on a first power driven wheelchair for a first user
when a second user with a similar power driven wheelchair and
similar physical impairments is identified. The various aspects of
FIG. 4 described above may be automated, semi-automated, or manual
and may be implemented through hardware, software, firmware, or
combinations thereof.
[0059] With reference to FIG. 5, an exemplary embodiment of
on-board storage device 70, 96 may include a plurality of storage
locations that may store software programs 108, one or more
programmable parameter sets 110, or a collection of help
information 112. In one embodiment, for example, the on-board
storage device 70, 96 may include four programmable parameter sets
110. However, there may be more or less programmable parameter sets
in additional embodiments. Each programmable parameter set may
include multiple programmable operating parameters. The
programmable parameter sets may also be viewed as a plurality of
programmable operating parameters that may be arranged in sets
according to, for example, different environmental conditions for
the power driven wheelchair (e.g., indoor, outdoor, etc.).
[0060] With reference to FIG. 6, an exemplary embodiment of
portable storage medium 86, 106 may include a plurality of storage
locations that may store a security key 114, one or more library
parameter sets 116, or a collection of help information 118. In one
embodiment, for example, the portable storage medium 86, 106 may
include four or more library parameter sets 116. However, there may
be more or less library parameter sets in additional embodiments.
Each library parameter set may include multiple programmable
operating parameters. The library parameter sets may also be viewed
as copies of programmable parameter sets on transportable media
that are ready for loading into an on-board storage device 70, 96
(FIG. 5) as corresponding programmable parameter sets.
[0061] With reference to FIG. 7, an exemplary embodiment of a
system controller 120 may include a power/drive select switch 122,
an info switch 124, a graphic display 126, a joystick control 128,
a speed control 130, and a mounting hub 132. This configuration of
the system controller 120 may be referred to as a multi-purpose
joystick (MPJ) model. The MPJ model may also include a removable
memory card slot (not shown) for receiving a portable storage
medium 86 (FIG. 3), such as a removable memory card.
[0062] The power/drive select switch 122, for example, may include
a three position rotary switch. The "on" position, for example, is
a center position where the power driven wheelchair is powered on.
The "drive select" position is a return-to-center position that
advances through the available drives (i.e., programmable parameter
sets). The "off" position of the power/drive select switch 122 is,
for example, a latching position opposite the "drive select"
position where the power driven wheelchair is powered down.
[0063] The info switch 124, for example, may include a momentary
pushbutton switch. Activation of the info switch 124, for example,
may cause the controller 120 to access and display help
information. Certain information from help information file(s) may
be provided on the graphic display 126. The help information
provided may be related to the content of the display at or about
the time the info switch 124 was activated. For example,
information retrieved from help information file(s) may be
context-sensitive with respect to an active screen object, such as
a current menu or icon selection, a current programmable parameter
selection, a current drive selection, a current mode selection, or
a current error message. This provides information about a specific
item as it is currently being used. The context-sensitive help
information may: i) explain current selections for operation or
support of the power driven wheelchair, ii) current settings for
programmable parameters, iii) current selection(s) with respect to
screen objects (i.e., active screen object(s)) of the display, and
iv) describe an expected result from activation of the selected or
active option. In additional embodiments, retrieval of specific
information from the help information file(s) may be menu-driven,
topic-driven, or driven by another suitable means.
[0064] The graphic display 126, for example, may include a
128.times.64 pixel display. A screen on the graphic display 126 may
include about five or six lines of text by about 32 characters,
about two large icons (e.g., 64.times.64 pixels icons), about eight
small icons (e.g., 32.times.32 pixel icons), or various
combinations thereof. Of course, larger or smaller icons may also
be used in various combinations.
[0065] The joystick control 128, for example, may include a
proportional analog joystick. The joystick control 128, for
example, may be used for directional control for menu or icon
navigation, setting or modifying a programmable parameter, saving a
selected programmable parameter value, directional control for
driving the power driven wheelchair, positional control of a
selected user support surface, and other selection-type functions
when directional or positional control is not required. The
joystick control 128 is an example of a screen navigation control.
The speed control 130, for example, may include a rotary
potentiometer. Turning the speed control 130 between
counter-clockwise and clockwise limits adjusts the maximum speed of
the power driven wheelchair in relation to operation using the
joystick control 128. The mounting hub 132, for example, may be
inserted in a mating receptacle on the power driven wheelchair to
mount the system controller 32.
[0066] With reference to FIG. 8, another exemplary embodiment of a
system controller 140 may include an info switch 124, a graphic
display 126, a joystick control 128, a speed control 130, a
mounting hub 132, a power/drive select switch 142, and a removable
memory card slot 144. This system controller 140 may be referred to
as a personalized switch rear-mount (PSR) joystick model or simply
a PSR model. Generally, the components of the PSR model have the
same functional characteristics as the components described above
for the MPJ model (FIG. 7). The PSR model provides an alternate
construction of a system controller.
[0067] With reference to FIG. 9, still another exemplary embodiment
of a system controller 150 may include an info switch 124, a
graphic display 126, a joystick control 128, a speed control 130,
and a power/drive select switch 142. This system controller 150 may
be referred to as a personalized switch front-mount (PSF) joystick
model or simply a PSF model. A mounting hub (not shown) may also be
provided on the PSF model for mounting the system controller 150.
The PSF model may also include a removable memory card slot (not
shown) for receiving a portable storage medium 86 (FIG. 3), such as
a removable memory card. Generally, the components of the PSF model
have the same functional characteristics as the components
described above for the MPJ model (FIG. 7). The PSF model provides
an alternate construction of a system controller.
[0068] With reference to FIG. 10, yet another exemplary embodiment
of a system controller 160 may include a removable memory card slot
144, an info switch 162, a power switch 164, a graphic display 166,
an up direction switch 168, a down direction switch 170, a
menu/left direction switch 172, a right direction switch 174, a
select switch 176, and a save switch 178. This system controller
160 may be referred to as a DISPLAY model. The DISPLAY model may
also include a mounting hub (not shown) for mounting the system
controller 160. Generally, the removable memory card slot 144 has
the same functional characteristics as described above for the MPJ
model (FIG. 7).
[0069] The info switch 162, for example, may include a momentary
pushbutton switch. Activation of the info switch 162 may cause the
controller 160 to access and display help information. Certain
information from help information file(s) may be provided on the
graphic display 166. The help information provided may be related
to the content of the display at or about the time the info switch
162 was activated. For example, information retrieved from help
information file(s) may be context-sensitive with respect to an
active screen object, such as a current menu or icon selection, a
current programmable parameter selection, a current drive
selection, a current mode selection, or a current error message.
This provides information about a specific item as it is currently
being used. The context-sensitive help information may: i) explain
current selections for operation or support of the power driven
wheelchair, ii) current settings for programmable parameters, iii)
current selection(s) with respect to screen objects (i.e., active
screen object(s)) of the display, and iv) describe an expected
result from activation of the selected option. In additional
embodiments, retrieval of specific information from the help
information file(s) may be menu-driven, topic-driven, or driven by
another suitable means.
[0070] The power switch 164, for example, may include a two
position toggle switch with on and off positions. When the power
switch 164 is set to the "on" position the power driven wheelchair
is powered on. When the power switch 164 is switched from the "on"
position to the "off" position, for example, the power driven
wheelchair may begin a predetermined shutdown sequence. The graphic
display 166, for example, is a 160.times.160 pixel display. A
screen on the graphic display 166 may include about twelve lines of
text by about 40 characters, about four large icons (e.g.,
64.times.64 pixels icons), about 25 small icons (e.g., 32.times.32
pixel icons), or various combinations thereof. Of course, larger or
smaller icons may also be used in various combinations.
[0071] The up, down, menu/left, and right direction switches 168,
170, 172, 174, for example, may include momentary pushbutton
switches. The up, down, menu/left, and right direction switches
168, 170, 172, 174 may be used for directional control for menu or
icon navigation, setting or modifying a programmable parameter,
positional control of a selected user support surface, and other
selection-type functions when directional or positional control is
not required. For certain display screens, activation of the
menu/left direction switch 172 may cause the controller 160 to
present the previous menu on the graphic display 166. The up, down,
menu/left, and right direction switches 168, 170, 172, 174, in any
combination, are examples of a screen navigation control. In
another embodiment, the up, down, menu/left, and right direction
switches 168, 170, 172, 174, for example, may also be used for
directional control for certain power driven wheelchair driving
operations.
[0072] The select switch 176, for example, may include a momentary
pushbutton switch. The select switch 176 may be used for selection
of menu items or icons. The save switch 178, for example, may
include a momentary pushbutton switch. The save switch 178 may be
used for saving a displayed value of a selected programmable
parameter as the current value for the parameter The mode select,
drive select, and speed control functions described above for the
MPJ model (FIG. 7), for example, may be implemented through the
graphic display 166, navigational control using the up, down,
menu/left, and right direction switches 168, 170, 172, 174, and
activation of the select or save switches 176, 178.
[0073] With reference to FIG. 11, an exemplary embodiment of a
programmer 180 may include a removable memory card slot 144, a
graphic display 166, an up direction switch 168, a down direction
switch 170, a menu/left direction switch 172, a right direction
switch 174, a select switch 176, a save switch 178, and a
power/info switch 182. Generally, the components of the programmer
180 have the same functional characteristics as the components
described above for the DISPLAY model of the system controller 160
(FIG. 10). However, the programmer 180 may combine the power and
info functions in the power/info switch 182. Notably, the
programmer 180 may not require the speed control functionality of
the DISPLAY model. The programmer 180 may also not require other
functionality of the DISPLAY model in relation to driving the power
driven wheelchair or positioning the user support surfaces.
[0074] The power/info switch 182, for example, may include a
momentary switch. Pressing and holding the power/info switch 182
for at least a predetermined time (e.g., three seconds) may provide
control of toggling power on and power off functions. For example,
if the programmer 180 is powered off, pressing and holding the
power/info switch 182 for at least the predetermined time may cause
the programmer 180 to be powered on. Similarly, if the programmer
180 is powered on, pressing and holding the power/info switch 182
for at least the predetermined time may cause the programmer 180 to
begin a predetermined shutdown sequence. The info function may be
provided by pressing and releasing the power/info switch 182 within
a predetermined time (e.g., two seconds). The characteristics of
the info function of the power/info switch 182 are otherwise the
same as those described above for the info switch 162 of the
DISPLAY model (FIG. 10).
[0075] With reference to FIG. 12, an exemplary sequence 200 is
provided with normal screen content and help information content
after a help switch (e.g., info switch 124 (FIG. 7)) activation
when MAIN OPERATION screen content 201 is displayed on a display
device (e.g., display 126 (FIG. 7)). The MAIN OPERATION screen
content 201 may include multiple screen objects, such as graphic
and text objects. The graphic objects may include a current drive
indicator graphic object 202 (e.g., D1), a drive mode selection
icon 203, an automatic positioning mode selection icon 204 (e.g.,
AP), a 4-way switch positioning mode selection icon 205, an
environmental control unit (ECU) mode selection icon 206 (e.g., ECU
1), a status indicator graphic object 207, and a battery level
indicator graphic object 208. The text objects may include a
current drive name text object 209 (e.g., OUTDOOR) and a status
message text object 210 (e.g., TILT WARNING).
[0076] The drive mode selection icon 203, for example, may be
active or selected by default when the MAIN OPERATION screen
content 201 is displayed. As shown by the dotted lines above and
below the icon in FIG. 12, the drive mode selection icon 203 is
active. In other embodiments, use of a pointer or any other
suitable type of highlighting can be used to indicate that a mode
selection icon is active or selected. The mode selection icons can
be navigated using, for example, toggle activations associated with
a mode select control (not shown). The mode select control, for
example, may include a momentary pushbutton switch. Navigation of
the mode selection icons from left to right, for example, may be
accomplished by successive toggle activations of the mode select
control to advance to the next mode selection icon to the right.
For example, when the ECU mode selection icon 206 is active, the
next toggle activation of the mode select control may result in
selection of the drive mode selection icon 203.
[0077] The power driven wheelchair may be driven when the drive
mode selection icon 203 is selected. The automatic positioning mode
selection icon 204 may be used to move one or more user support
surfaces via an automatic positioning sequence. One or more user
support surfaces may be moved via a 4-way switch control (e.g.,
joystick control 128 (FIG. 7, 128) up, down, menu/left, and right
direction switches 168, 170, 172, 174 (FIG. 10)) when the 4-way
switch positioning mode selection icon 205 is active. The ECU mode
selection icon 206 may be use to control ECU operation using a
4-way switch control (e.g., joystick control 128 (FIG. 7) up, down,
menu/left, and right direction switches 168, 170, 172, 174 (FIG.
10).
[0078] With the MAIN OPERATION screen content 201 displayed, a help
switch activation, such as pressing the info switch (e.g., 124
(FIG. 7)) on the system controller (e.g., 120 (FIG. 7)), may cause
context-sensitive help information screen content 211 to be
displayed on the display device (e.g., display 126 (FIG. 7)). As
shown, the following narrative is an example of what may be
displayed: "A MAIN OPERATION screen is displayed with drive,
automatic positioning, 4-switch positioning, and ECU mode selection
icons and wheelchair status information. The drive mode selection
icon is currently active. Drive 1 (D1), named "OUTDOOR," is
currently selected. The battery level indicator indicates the
status of the battery is fully charged. The wheelchair is
experiencing a tilt warning condition. Operation of the drive
control will move the wheelchair. The mode select control may be
used to select an alternate mode selection icon." In additional
embodiments, various portions of the exemplary context-sensitive
help information may be provided in any combination after the info
activation. Of course, in other embodiments, the context-sensitive
help information may be presented using different words or
different context-sensitive help information may be presented.
[0079] With reference to FIG. 13, an exemplary sequence 212 is
provided with normal screen content and help information content
after a help switch activation when MAIN PROGRAMMING screen content
213 is displayed on a display device. The MAIN PROGRAMMING screen
content 213 may include multiple screen objects, such text objects
providing status information and menu selections. More
specifically, the text objects providing status information may
include a current mode text object 214 (e.g., PROGRAMMING), a
current drive number text object 215 (e.g., DRIVE 1), a current
drive name text object 216 (e.g., OUTDOOR), and current value text
objects for speed and response parameters 217, 218 (e.g., 90%, 90%)
associated with the current drive. The text objects providing menu
selections may include a SPEED text object 219, a RESPONSE text
object 220, and an ADVANCED MENU text object 221.
[0080] The ADVANCED MENU text object 221, for example, may be
active or selected by default when the MAIN PROGRAMMING screen
content 213 is displayed. As shown by the bold text, the ADVANCED
MENU text object 221 is active. In other embodiments, use of a
pointer or any other suitable type of highlighting can be used to
indicate that a menu selection is active or selected. The menu
selections can be navigated using, for example, up or down
activations associated with a screen navigation. Navigation of the
menu selections using the screen navigation control, for example,
may be accomplished by moving the joystick forward for an up
activation or backward for a down activation. The menu selection
above the active menu selection may be selected with a forward
movement of the joystick. For example, when the ADVANCED MENU text
object 221 is active, a forward joystick movement may result in
selection of the RESPONSE text object 220.
[0081] With the MAIN PROGRAMMING screen content 213 displayed, a
help switch activation may cause context-sensitive help information
screen content 222 to be displayed on the display device. As shown,
the following narrative is an example of what may be displayed: "A
MAIN PROGRAMMING screen is displayed with menu selections for SPEED
parameter, RESPONSE parameter, and ADVANCED MENU and wheelchair
status information. DRIVE 1, named "OUTDOOR," is currently
selected. The ADVANCED MENU item is currently active. A "select"
activation will cause an ADVANCED MENU screen to be displayed. The
screen navigation control may be used to move to an alternate menu
item."
[0082] With reference to FIG. 14, an exemplary sequence 223 is
provided with normal screen content and help information content
after a help switch activation when ADVANCED MENU screen content
224 is displayed on a display device. The ADVANCED MENU screen
content 224 may include multiple text objects providing status
information and menu selections. More specifically, the text
objects providing status information may include a current mode
text object 225 and current menu text object 226 (e.g., ADVANCED
MENU). The text objects providing menu selections may include a
PERFORMANCE ADJUST text object 227, a STANDARD PROGRAMS text object
228, and additional selections related to support tasks associated
with the programming mode.
[0083] The PERFORMANCE ADJUST text object 227, for example, may be
active or selected by default when the ADVANCED MENU screen content
224 is displayed. As shown by the bold text, the PERFORMANCE ADJUST
text object 227 is active. In other embodiments, use of a pointer
or any other suitable type of highlighting can be used to indicate
that a menu selection is active or selected. The menu selections
can be navigated in the same manner as described above for FIG.
13.
[0084] With the ADVANCED MENU screen content 224 displayed, a help
switch activation may cause context-sensitive help information
screen content 229 to be displayed on the display device. As shown,
the following narrative is an example of what may be displayed: "An
ADVANCED MENU screen is displayed with menu selections for
PERFORMANCE ADJUST, STANDARD PROGRAMS, MEMORY CARD, POWERED
SEATING, CALIBRATIONS, and DIAGNOSTICS and wheelchair status
information. The PERFORMANCE ADJUST item is currently active. A
"select" activation will cause a DRIVE SELECT screen to be
displayed. The screen navigation control may be used to move to an
alternate menu item."
[0085] With reference to FIG. 15, an exemplary sequence 230 is
provided with normal screen content and help information content
after a help switch activation when DRIVE SELECT screen content 231
is displayed on a display device. The DRIVE SELECT screen content
231 may include multiple text objects providing status information
and menu selections. More specifically, the text objects providing
status information may include a current mode text object 232 and
current menu text object 233 (e.g., DRIVE SELECT). The text objects
providing menu selections may include a DRIVE 1 text object 234, a
DRIVE 2 text object 235, and additional selections related to
support tasks associated with the programming mode.
[0086] The DRIVE 1 text object 234, for example, may be active or
selected by default when the DRIVE SELECT screen content 231 is
displayed. As shown by the bold text, the DRIVE 1 text object 234
is active. In other embodiments, use of a pointer or any other
suitable type of highlighting can be used to indicate that a menu
selection is active or selected. The menu selections can be
navigated in the same manner as described above for FIG. 13.
[0087] With the DRIVE SELECT screen content 231 displayed, a help
switch activation may cause context-sensitive help information
screen content 236 to be displayed on the display device. As shown,
the following narrative is an example of what may be displayed: "A
DRIVE SELECT screen is displayed with wheelchair status information
and menu selections for DRIVE 1, DRIVE 2, DRIVE 3, and DRIVE 4. The
DRIVE 1 item is currently active. A "select" activation will cause
a PARAMETER SELECT screen to be displayed with parameters
associated with DRIVE 1. The screen navigation control may be used
to move to an alternate menu item."
[0088] With reference to FIG. 16, an exemplary sequence 237 is
provided with normal screen content and help information content
after a help switch activation when PARAMETER SELECT screen content
238 is displayed on a display device. The PARAMETER SELECT screen
content 238 may include multiple text objects providing status
information and menu selections. More specifically, the text
objects providing status information may include a current mode
text object 239, current menu text object 240 (e.g., PARAMETER
SELECT), current drive number text object 241 (e.g., D1), and
current parameter values for each programmable (i.e., adjustable)
parameter. The text objects providing menu selections may include a
FORWARD SPEED text object 242, a FWD ACCELERATION text object 243,
and additional selections associated with other programmable drive
parameters.
[0089] The FORWARD SPEED text object 242, for example, may be
active or selected by default when the PARAMETER SELECT screen
content 238 is displayed. As shown by the bold text, the FORWARD
SPEED text object 242 is active. In other embodiments, use of a
pointer or any other suitable type of highlighting can be used to
indicate that a menu selection is active or selected. The menu
selections can be navigated in the same manner as described above
for FIG. 13.
[0090] With the PARAMETER SELECT screen content 238 displayed, a
help switch activation may cause context-sensitive help information
screen content 244 to be displayed on the display device. As shown,
the following narrative is an example of what may be displayed: "A
PARAMETER SELECT screen is displayed with wheelchair status
information and menu selections for FORWARD SPEED, FWD
ACCELERATION, FWD BRAKING, REVERSE SPEED, REV ACCELERATION, REV
BRAKING, TURN SPEED, TURN ACCELERATION, TURN DECELERATION, TREMOR
DAMPENING, POWER LEVEL, and INPUT TYPE. The current value for each
parameter is shown. The FORWARD SPEED item is currently active. A
"select" activation will cause a FORWARD SPEED screen to be
displayed for adjustment of the current parameter value. The screen
navigation control may be used to move to an alternate menu
item."
[0091] With reference to FIG. 17, an exemplary sequence 245 is
provided with normal screen content and help information content
activation when FORWARD SPEED screen content 246 is displayed on a
display device. The FORWARD SPEED screen content 246 may include
multiple text objects providing status information and parameter
adjustment. More specifically, the text objects providing status
information may include a current mode text object 247, current
drive parameter text object 248 (e.g., FORWARD SPEED), current
drive number text object 249, and current parameter value text
object 250 (e.g., 90%). The text objects providing parameter
adjustment may include a decrease parameter text object 251 (e.g.,
LESS) and an increase parameter text object 252 (e.g., MORE).
[0092] The FORWARD SPEED screen content 246 allows a user to
set/modify the current value of the forward speed programmable
parameter. The forward speed programmable parameter, for example,
is a "range" parameter. In other words, it can be set to values
between minimum and maximum limits (inclusive or exclusive) in
pre-determined increments via MORE or LESS activations. These MORE
or LESS activations, for example, can be accomplished by moving a
joystick control (e.g., 128 (FIG. 7)) forward for an up (i.e.,
MORE) activation or backward for a down (i.e., LESS) activation. In
another embodiment, the MORE or LESS activations, for example, can
be accomplished using up and down direction switches (e.g., 168,
170 (FIG. 10)), respectively. The decrease parameter and increase
parameter text objects 251, 252, for example, use of a pointer or
may be highlighted to reflect whether the last adjustment to the
displayed parameter value was an increase or a decrease. As shown,
the increase parameter text object 252 (e.g., MORE) in the FORWARD
SPEED screen 232 is highlighted in bold. In additional embodiments,
use of a pointer or any suitable type of highlighting may be used.
In response to MORE or LESS activations, for example, a status bar
253 and the current parameter value text object 250 are updated
incrementally for each activation. For example, each activation may
adjust the parameter value by five percent and add or remove a
segment from the status bar.
[0093] With the FORWARD SPEED screen content 246 display, a help
switch activation may cause context-sensitive help information
screen content 254 to be displayed on the display device. As shown,
the following narrative is an example of what may be displayed: "A
FORWARD SPEED screen is displayed with parameter status information
for Drive 1 (D1) and selections for increasing or decreasing the
parameter value. The current value for the FORWARD SPEED parameter
is 90%. An up activation on the direction control switch will
increase the parameter value. A down activation on the direction
control switch will decrease the parameter value. A "save"
activation will set the current value for the parameter to the
displayed value."
[0094] With reference to FIG. 18, an exemplary sequence 255 is
provided with normal screen content and help information content
after a help switch activation when INPUT TYPE screen content 256
is displayed on a display device. The INPUT TYPE screen content 256
may include multiple text objects providing status information and
menu selections for parameter adjustment. More specifically, the
text objects providing status information may include a current
mode text object 257, current drive parameter text object 258
(e.g., INPUT TYPE), current drive number text object 259, and
current parameter value text object 260 (e.g., PSF). The text
objects providing menu selections may include an MPJ text object
261, a PSR text object 262, and additional selections related to
other models of system controllers.
[0095] The INPUT TYPE screen content 256 allows a user to
set/modify the current setting for the input type programmable
parameter. The input type programmable parameter, for example, is a
"choice" parameter. In other words, it can be set to any choice
within a list of choices. The list of choices may be arranged in a
menu as shown in FIG. 18. For example, as shown, the menu
selections may include MPJ for multi-purpose joystick system
controller, PSR for personalized switch rear-mount joystick system
controller, PSF for personalized switch forward-mount joystick
system controller, and DISP for display system controller. The menu
selections can be navigated in the same manner as described above
for FIG. 13.
[0096] With the INPUT TYPE screen content 256 display, a help
switch activation may cause context-sensitive help information
screen content 263 to be displayed on the display device. As shown,
the following narrative is an example of what may be displayed: "An
INPUT TYPE screen is displayed with parameter status information
for Drive 1 (D1) and menu selections with a list of choices for the
parameter value. The current value for the INPUT TYPE parameter is
PSF. The current selection for the INPUT TYPE parameter is MPJ. An
up activation on the direction control switch will change the
current selection to DISP. A down activation on the direction
control switch will change the current selection to PSR. A "save"
activation will set the current value for the parameter to the
current selection."
[0097] With reference to FIG. 19, an exemplary programming mode
menu hierarchy 264 for setting or modifying a programmable
parameter associated with operation of a power driven wheelchair
begins with a main menu 266. A similar embodiment of the main menu
266 is also depicted in FIG. 13 and described above in more detail.
An advanced menu 268 may be selected from the main menu 266. A
similar embodiment of the advanced menu 268 is described above in
more detail with reference to FIG. 14. Performance adjust 270 may
be selected after from the advanced menu 268. A similar embodiment
of the performance adjust 270 is described above in more detail
with reference to FIG. 16.
[0098] A standard programs menu 272 may be selected from the
advanced menu 268. An SD card menu 274 may also be selected from
the advanced menu 254. Additional menus or items, such as a drive
pgrm (program) item 276, a store (drive program) to SD card item
278, a read (drive program) from SD card item 280, a system item
282, a store (system) to SD card item 284, and a read (system) from
SD card item 286 may be selected within the hierarchy of the SD
card menu 274. In other embodiments, the SD card menu 274 may be
referred to as a removable memory card menu or a portable storage
medium menu. Additional menus or lists, such as a diagnostics menu
288, a powered seating menu 290, and a calibrations menu 292 may
also be selected from the advanced menu 268.
[0099] With reference to FIG. 20, an exemplary info monitor process
300 associated with providing context-sensitive help on a display
device associated with a power driven wheelchair begins at 302
where the process starts. At 304, the process detects activation of
an info switch (e.g., 124 (FIG. 7)). In another embodiment, the
process may periodically check the condition of the info
switch.
[0100] If the info switch was activated, for example, a security
check may be performed prior to displaying context-sensitive help
(306). This security check is optional and not required,
particularly in regard to context-sensitive help functions. It is
described here because in certain applications users, attendants,
and technicians may have different privileges with regard to
operation and support of the power driven wheelchair. A security
check facilitates limiting access to one or more features provided
in the power driven wheelchair. Context-sensitive help may be
provided for features that do not require a security check as well
as those features that do require a security check.
[0101] In one embodiment, the security check, for example, may
include a hardware or software key associated with insertion of an
appropriate portable storage medium (e.g., 86 (FIG. 3)), for
example, in a removable memory card slot (e.g., 144 (FIG. 8)) of a
system controller (e.g., 140 (FIG. 8)). In another embodiment, the
security check, for example, may include a hardware or software key
associated with connection of the programmer (e.g., 60 (FIG. 2)) to
the system controller (e.g., 32 (FIG. 2)). If the programmer is
being used, the security check may include a key status signal
transmitted by the programmer to the system controller.
[0102] If the security check passes at 308, information associated
with a current display screen is retrieved in 310. For example,
current mode and drive selections, current menu or icon selections,
or current stored values or current displayed values for selected
programmable parameters. In various embodiments, various individual
or combinations of information elements associated with the current
display screen may be retrieved. At 312, context-sensitive help
information is selected from a collection of help information based
at least in part on the current display information retrieved.
Next, the identified context-sensitive help information is
constructed into a narrative message form and displayed in a
display screen. In another embodiment, the context-sensitive help
information may be displayed in a window or dialog box on the
display.
[0103] At 316, the process, for example, detects a select
activation. For example, a select activation may be provided by
moving a joystick control (e.g., 128 (FIG. 7)) to the right or by
pressing a select switch (e.g., 176 (FIG. 10)). In another
embodiment, the process may periodically check the condition of any
component that may provide a select activation. If a select
activation was detected, for example, the message (e.g.,
context-sensitive help message) may be cleared from the display. In
other words, for example, the display may be returned to the
condition it was in prior to the last info activation. At this
stage, the info monitor process is repeated 320 so that another
info activation can be detected.
[0104] If the security check does not pass at 308, the process
advances to 322 to determine if a predetermined timeout period has
expired. If the timeout period is not expired, the process returns
to 308 to determine if the security check passed. If the timeout
period is expired at 322, a security error message may be displayed
(324) and the process advances to 316, for example, to wait for the
error message to be cleared by a select activation. The various
aspects of FIG. 20 described above may be automated,
semi-automated, or manual and may be implemented through hardware,
software, firmware, or combinations thereof.
[0105] With reference to FIG. 21, an exemplary menu navigation
sub-process 340 associated with setting or modifying a programmable
parameter begins at 342 where the sub-process starts. At 344, the
process may detect an up activation. If an up activation is not
detected, the process does not advance beyond 344. For example,
moving a joystick control (e.g., 128 (FIG. 7)) forward or pressing
an up direction switch (e.g., 168 (FIG. 10)) may provide an up
activation. If an up activation is detected, the menu item above
the current menu item may be selected and highlighted to indicate
the newly selected menu item (346). The previously highlighted menu
item may be returned to normal text. Next, at 348, the menu
navigation sub-process may be repeated.
[0106] At 350, the process may detect a previous menu activation.
If a previous menu activation is not detected, the process does not
advance beyond 350. For example, moving a joystick control (e.g.,
128 (FIG. 7)) to the left or pressing a menu/left direction switch
(e.g., 172 (FIG. 10)) may provide an previous menu activation. If a
previous menu activation is detected, the previous menu in a menu
hierarchy (e.g., 264 (FIG. 19)) may be displayed (352), unless, for
example, the current menu is the main menu. Next, at 348, the menu
navigation sub-process may be repeated with respect to the previous
menu.
[0107] At 354, the process detects a down activation. If a down
activation is not detected, the process does not advance beyond
354. For example, moving a joystick control (e.g., 128 (FIG. 7))
backward or pressing a down direction switch (e.g., 170 (FIG. 10))
may provide a down activation. If a down activation is detected,
the menu item below the current menu item may be selected and
highlighted to indicate the newly selected menu item (356). The
previously highlighted menu item may be returned to normal text.
Next, at 348, the menu navigation sub-process may be repeated.
[0108] At 358, the process detects a select activation. If a select
activation is not detected, the process does not advance beyond
358. For example, moving a joystick control (e.g., 128 (FIG. 7)) to
the right or pressing a select switch (e.g., 176 (FIG. 10)) may
provide a select activation. If a select activation is detected,
the menu navigation sub-process may be ended and a menu item
selection handler sub-process may be started to determine if the
selection leads, for example, to a lower level menu or to a screen
to set/modify a programmable parameter.
[0109] In another embodiment, the menu navigation sub-process 340
may periodically check the condition of the corresponding
components associated with an up activation, previous menu
activation, down activation, and select activation in a loop to
determine if corresponding activations occur. The various aspects
of FIG. 21 described above may be automated, semi-automated, or
manual and may be implemented through hardware, software, firmware,
or combinations thereof.
[0110] With reference to FIG. 22, an exemplary set/modify parameter
handler sub-process 400 associated with setting or modifying a
programmable parameter begins at 402 where the sub-process starts.
At 404, the process may detect an up activation. If an up
activation is not detected, the process does not advance beyond
404. If an up activation is detected, the parameter value choice
above the current parameter value choice may be selected and
highlighted to indicate the newly selected parameter value from a
list of parameter value choices (i.e., when the selected
programmable parameter is a "choice" parameter) (406).
Alternatively, when the selected programmable parameter is a
"range" parameter, if an up activation is detected, the selected
parameter value may be increased to the next predetermined higher
value within the range of values for the corresponding programmable
parameter (406). For the "range" parameter adjustment, a MORE
screen object may be highlighted to indicate the last adjustment
made to the selected programmable parameter was based on an up
activation. Next, at 408, the set/modify parameter handler
sub-process may be repeated.
[0111] At 410, the process may detect a save activation. If a save
activation is not detected, the process does not advance beyond
410. For example, moving a joystick control (e.g., 128 (FIG. 7)) to
the right or pressing a save switch (e.g., 178 (FIG. 10)) may
provide a save activation. If a save activation is detected, the
new parameter value may be stored as the current parameter value
for the selected programmable parameter of the currently selected
drive (412). At 414, the set/modify parameter display may be
updated with the new current parameter value for the selected
programmable parameter of the currently selected drive. Next, at
408, the set/modify parameter handler sub-process may be
repeated.
[0112] At 416, the process may detect a down activation. If a down
activation is not detected, the process does not advance beyond
416. If an down activation is detected, the parameter value choice
below the current parameter value choice may be selected and
highlighted to indicate the newly selected parameter value from the
list of parameter value choices (i.e., when the selected
programmable parameter is a "choice" parameter) (406).
Alternatively, when the selected programmable parameter is a
"range" parameter, if a down activation is detected, the selected
parameter value may be decreased to the next predetermined lower
value within the range of values for the corresponding programmable
parameter (406). For the "range" parameter adjustment, a LESS
screen object may be highlighted to indicate the last adjustment
made to the selected programmable parameter was based on a down
activation. Next, at 408, the set/modify parameter handler
sub-process may be repeated.
[0113] At 420, the process detects a previous menu activation. If a
previous menu activation is not detected, the process does not
advance beyond 420. If a previous menu activation is detected, the
previous menu in a menu hierarchy (e.g., 264 (FIG. 19)) may be
displayed (422), unless, for example, the current menu is the main
menu. Next, at 424, the set/modify parameter handler sub-process
may be ended and a menu navigation sub-process (see FIG. 21) may be
started.
[0114] In another embodiment, set/modify parameter handler
sub-process 400 may periodically check the condition of the
corresponding components associated with an up activation, save
activation, down activation, and previous menu activation in a loop
to determine if corresponding activations occur. The various
aspects of FIG. 22 described above may be automated,
semi-automated, or manual and may be implemented through hardware,
software, firmware, or combinations thereof.
[0115] With reference to FIG. 23, an exemplary process 500 for
providing help information on a display device associated with a
power driven wheelchair begins at 502 where normal screen content
displayed on the display device is updated during operation or
support of the power driven wheelchair. At 504, the process
determines if a first input device was selectively activated. Next,
in response to detection of the first input device activation, help
information content is selected from a collection of help
information (506). The selected help information content being
contextually related to the normal screen content displayed on the
display device. At 508, the contextually-related help information
content is displayed on the display device. At this point, the
process may return to 502 to continue displaying normal screen
content on the display device. At 504, if activation of the first
input device is not detected, the process also may return to
502.
[0116] In another embodiment, the normal screen content, during at
least a portion of the operation or support, may include one or
more screen objects. In this embodiment, the process may also
detect selective activation of a second input device. In response
to detection of the second input device activation, a first screen
object from the one or more screen objects may be designated as
active within the normal screen content. In this embodiment, the
selected help information content may also be contextually related
to the first screen object within the normal screen content
displayed on the display device.
[0117] In another embodiment, the one or more screen objects may
include, for example, one or more of a menu item, an active text
object, a check box, an icon, a control button, or a radio button.
In still another embodiment, the contextually-related help
information content may be displayed on the display device in a
full screen view, a window, or a dialog box.
[0118] In another embodiment, the contextually-related help
information content may be retrieved from a portable storage medium
via a storage medium interface associated with the power driven
wheelchair. In this embodiment, the portable storage medium may
include a removable memory device that is releasably received by
the storage medium interface. Moreover, the removable memory device
may store the collection of help information. In various
embodiments, the removable memory device may include an SD card, a
CF card, a flash memory pen drive, a memory stick, a microdrive, an
MMC, an SM card, an xD picture card, or a SIM card. The various
aspects of FIG. 23 described above may be automated,
semi-automated, or manual and may be implemented through hardware,
software, firmware, or combinations thereof.
[0119] With reference to FIG. 24, an exemplary process 550 for
providing help information on a display device associated with a
power driven wheelchair begins at 552 where normal screen content
displayed on the display device is updated during operation or
support of the power driven wheelchair. In this embodiment, the
normal screen content, during at least a portion of the operation
or support, may include one or more screen objects. At 554, the
process determines if a screen navigation control was selectively
activated. Next, in response to detection of the screen navigation
control activation, a first screen object from the one or more
screen objects is designated as active within the normal screen
content (556). At 558, the process determines if a help switch was
selectively activated. Next, in response to detection of the help
switch activation, help information content is selected from a
collection of help information (560). The selected help information
content being contextually related to the active screen object
within the normal screen content displayed on the display device.
At 562, the contextually-related help information content is
displayed on the display device. At this point, the process may
return to 552 to continue displaying normal screen content on the
display device. At 554, if activation of the screen navigation
control is not detected, the process also may return to 552.
Likewise, at 558, if activation of the help switch is not detected,
the process also may return to 552.
[0120] In another embodiment, the screen navigation control may
include at least one of a right activation, a down activation, an
up activation, or a left activation. In still another embodiment,
the one or more screen objects may include one or more of a menu
item, an active text object, a check box, an icon, a control
button, or a radio button. In yet another embodiment, the process
may include displaying the contextually-related help information
content on the display device in a full screen view, a window, or a
dialog box.
[0121] In still yet another embodiment, the process may include
retrieving the contextually-related help information content from a
removable memory device via a storage medium interface associated
with the power driven wheelchair. In this embodiment, the removable
memory device may be releasably received by the storage medium
interface and may store the collection of help information.
Moreover, the removable memory device may include an SD card, a CF
card, a flash memory pen drive, a memory stick, a microdrive, an
MMC, an SM card, an xD picture card, or a SIM card. The various
aspects of FIG. 24 described above may be automated,
semi-automated, or manual and may be implemented through hardware,
software, firmware, or combinations thereof.
[0122] With reference to FIG. 25, an apparatus 600 associated with
a power driven wheelchair may include a display device 602, a first
input device 604, a microcontroller 606, screen content 608, a
collection of help information 610, and a second input device 612.
The display device 602 may selectively display screen content
during operation or support of the power driven wheelchair. The
first input device 604 may be selectively activated by, for
example, a user, an attendant, or a technician. The microcontroller
606 may be in operative communication with the display device and
the first input device. The microcontroller 606 may control the
screen content 608 displayed on the display device 602 during the
operation or support and detects activation of the first input
device 604. In response to detection of the first input device
activation, the microcontroller 606 may select help information
content from a collection of help information 610. The selected
help information content may be contextually related to the screen
content 608 displayed on the display device. Additionally, the
microcontroller 606 may control display of the contextually-related
help information content on the display device 602.
[0123] In another embodiment, the screen content 608, during at
least a portion of the operation or support, may include one or
more screen objects. In the embodiment, the apparatus 600 may
include the second input device 612 for selective activation. The
second input device 612 may be in communication with the
microcontroller 606. The microcontroller 606 may detect selective
activation of the second input device 612 and, in response to
detection of the second input device activation, may control
designation of a first screen object from the one or more screen
objects as active within the screen content 608. In this
embodiment, the selected help information content may be
contextually related to the first screen object within the screen
content 608 displayed on the display device 602. In still another
embodiment, the one or more screen objects may include one or more
of a menu item, an active text object, a check box, an icon, a
control button, or a radio button. In yet another embodiment, the
contextually-related help information content may be displayed on
the display device in a full screen view, a window, or a dialog
box.
[0124] In another embodiment, the apparatus 600 may also include a
storage medium interface 72 (FIG. 3), 98 (FIG. 4) in operative
communication with the microcontroller 606 and a portable storage
medium 86 (FIG. 3), 106 (FIG. 4) in operative communication with
the storage medium interface and storing the collection of help
information 610. In still another embodiment, the portable storage
medium may includes a removable memory device that is releasably
received by the storage medium interface, the removable memory
device storing the collection of help information 610. The
removable memory device may include a SD card, a CF card, a flash
memory pen drive, a memory stick, a microdrive, an MMC, an SM card,
an xD picture card, or a SIM card. The various aspects of FIG. 25
described above may be automated, semi-automated, or manual and may
be implemented through hardware, software, firmware, or
combinations thereof.
[0125] While the invention is described herein in conjunction with
one or more exemplary embodiments, it is evident that many
alternatives, modifications, and variations will be apparent to
those skilled in the art. Accordingly, exemplary embodiments in the
preceding description are intended to be illustrative, rather than
limiting, of the spirit and scope of the invention. More
specifically, it is intended that the invention embrace all
alternatives, modifications, and variations of the exemplary
embodiments described herein that fall within the spirit and scope
of the appended claims or the equivalents thereof. Any element in a
claim that does not explicitly state "means for" performing a
specified function, or "step for" performing a specific function,
is not to be interpreted as a "means" or "step" clause as specified
in 35 U.S.C. .sctn.112, 6. In particular, the use of "step of" in
the claims herein is not intended to invoke the provisions of 35
U.S.C. .sctn.112, 116.
* * * * *