Vehicle display device having a wireless transmitter

Vehicle display device having a wireless transmitter
US 20050020320A1
(19) United States
(12) Patent Application Publication (10) Pub. N0.2 US 2005/0020320 A1
(43) Pub. Date:
Lavelle et al.
(54)
VEHICLE DISPLAY DEVICE HAVING A
WIRELESS TRANSMITTER
Jan. 27, 2005
Publication Classi?cation
(51)
Int. Cl? ........................ .. H04M 3/42; HOSK 11/02;
(52)
Us. 01. .................... .. 455/569.2; 455/566; 455/345;
(76) Inventors: Patrick M. Lavelle, Sayville, NY (US);
H04B 1/06
Thomas C. Malone, Miller Place, NY
455/350
(US); James R. Tranchina, Dix Hills,
NY (US)
(57)
Correspondence Address:
ABSTRACT
There is provided a display device for a vehicle having a
F. CHAU & ASSOCIATES, LLC
seat. The display device includes an assembly housing
130 WOODBURY ROAD
adapted to mount at a rear portion of the seat. A receiver is
WOODBURY, NY 11797 (US)
adapted to receive at least one of video and audio signals
(21) Appl. No.:
10/912,008
from at least one external input device. At least one Wireless
(22) Filed:
Aug. 5, 2004
Wirelessly transmit the audio signals to at least one Wireless
transmitter operatively coupled to the receiver, is adapted to
headphone set. The display device is adapted to reproduce
Continuation of application No. 09/698,918, ?led on
the video signals. In some embodiments of the invention, the
at least one Wireless transmitter is adapted to transmit the
audio signals based on Code-Division Multiple Access
Oct. 27, 2000.
(CDMA) technology.
Related US. Application Data
(63)
114
116
118
120
122
126
136
.
TV
VCR
tuner
DVD
CD
AM/FM
video
player
player
radio
game
I
[1 12
125;" V
V V V‘? +
input bus
I
-
Sig
#127
proc/conv
:
facilities
lv
TV
TV
VCR
128
DVD
130 "
VCR
IR
DVD
IR
CD
iL- TXMTR
AM/FM
TXMTR g on
F1
F2
AM/FM
EXT
'
GAME
L
R
2.3MHz/2.8MHz (g?)
EXT
GAME
g2
/
154
L
R
2.5MHZ / 3.0MHZ
display
.. 192
Patent Application Publication Jan. 27, 2005 Sheet 1 0f 4
US 2005/0020320 A1
Patent Application Publication Jan. 27, 2005 Sheet 2 0f 4
US 2005/0020320 A1
Patent Application Publication Jan. 27, 2005 Sheet 4 0f 4
US 2005/0020320 A1
Jan. 27, 2005
US 2005/0020320 A1
VEHICLE DISPLAY DEVICE HAVING A
WIRELESS TRANSMITTER
[0008] According to a second aspect of the invention, the
Wireless signals are at least one of radio frequency and
infrared signals.
CROSS-REFERENCE TO RELATED
APPLICATION
[0009] According to a third aspect of the invention, the
receiver receives an input signal from an external media
[0001] This application is a Continuation of US. applica
tion Ser. No. 09/698,918, ?led on Oct. 27, 2000, the entirety
of Which is incorporated by reference herein.
source.
[0010] According to a fourth aspect of the invention, the
external media source includes at least one of a television
1. TECHNICAL FIELD
[0002] The present invention relates generally to vehicles
and, in particular, to a display device for a vehicle. The
tuner, a video cassette player (VCP), a compact disk (CD)
player, a digital video disk (DVD) player, an AM/FM radio,
a video game player, global navigation data, and e-mail.
display device mounts at a rear portion of a vehicle seat, With
[0011] According to a ?fth aspect of the invention, the
audio being supplied to the vehicle passengers by a Wireless
transmitter included in the display device. The passengers
receive the transmitted audio through Wireless headphones.
display device further includes signal processing facilities
adapted to perform at least one of signal processing and
signal conversion, With respect to at least one of the audio
signals and the video signals.
2. BACKGROUND DESCRIPTION
[0003] As cars have been continuously updated to include
neW and useful features for the enjoyment and/or utility of
[0012] According to a sixth aspect of the invention, the
signal processing facilities are adapted to perform at least
a driver and his or her passengers, devices generally found
in the home have made their Way into cars as optional
one of digital signal processing, encoding, decoding,
encrypting, decrypting, compressing, decompressing, ana
log-to-digital conversion (ADC), digital-to-analog conver
features. Such features include the television, the video
sion (DAC), and error correction.
cassette player (VCP), the compact disk (CD) player, and the
digital video disk (DVD) player. These features undoubtably
provide enjoyment and/or utility to the driver and/or pas
sengers of a vehicle. For example, children may become
occupied by, for example, Watching a moving and, thus, may
leave the driver better able to concentrate on operating the
vehicle. Moreover, passengers in a vehicle undertaking a
long journey may better pass the time by vieWing a movie.
[0004]
HoWever, it has generally been the case that the
vieWing of a movie in a vehicle includes the playing of any
corresponding audio on the vehicle’s existing sound system
[0013] According to a seventh aspect of the invention, the
display device employs one of a liquid crystal display
(LCD), light emitting diodes (LEDs), and a gas plasma.
[0014] According to an eighth aspect of the invention, the
liquid crystal display is based upon one of active matrix
technology and passive matrix technology.
[0015] According to a ninth aspect of the invention, the
display device employs touch screen technology.
or on a sound system of the reproducing device (e.g.,
[0016] According to a tenth aspect of the invention, the
display device includes one of picture-in-picture and split
integrated television/video cassette player). Such an
arrangement may interrupt those passengers Who Wish to
screen capability.
have a quiet environment, such as those passengers intend
[0017] According to an eleventh aspect of the invention,
ing to, for example, read or sleep during the trip.
the at least one Wireless transmitter includes at least one
[0005] Accordingly, there is a need for vehicle display
device Which provides an audio output to only those pas
sengers intent on receiving the same.
multiplexor adapted to select a speci?c input device Whose
audio output is to be Wirelessly transmitted to the at least one
Wireless headphone set.
[0018] According to a tWelfth aspect of the invention, the
SUMMARY OF THE INVENTION
[0006]
The problems stated above, as Well as other related
problems of the prior art, are solved by the present invention,
at least one Wireless transmitter is adapted to Wirelessly
transmit the audio signals to the at least one Wireless
headphone set as a left audio channel and a right audio
channel.
a display device for a vehicle. The display device mounts at
a rear portion of a vehicle seat, With audio being supplied to
the vehicle passengers by a Wireless transmitter included in
[0019] According to a thirteenth aspect of the invention,
the display device. The passengers receive the transmitted
spond to different frequencies.
the left audio channel and the right audio channel corre
audio through Wireless headphones.
[0007]
According to a ?rst aspect of the invention, there is
provided a display device for a vehicle having a seat. The
[0020] According to a fourteenth aspect of the invention,
the at least one Wireless headphone set includes a plurality
of Wireless headphone sets and the at least one Wireless
display device includes an assembly housing adapted to
transmitter is adapted to Wirelessly transmit the audio sig
mount at a rear portion of the seat. A receiver is adapted to
receive at least one of video and audio signals from at least
one external input device. At least one Wireless transmitter
nals to each of the plurality of Wireless headphone sets as a
left audio channel and a right audio channel. Each of the
channels have a different frequency for each of the plurality
of Wireless headphone sets.
operatively coupled to said receiver, is adapted to Wirelessly
transmit the audio signals to at least one Wireless headphone
set. The display device is adapted to reproduce the video
[0021] According to a ?fteenth aspect of the invention, the
signals.
bus includes a video bus and an audio bus.
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US 2005/0020320 A1
[0022] According to a sixteenth aspect of the invention,
the video bus is coupled to the display device and the audio
bus is coupled to the at least one Wireless transmitter.
[0023] According to a seventeenth aspect of the invention,
the at least one Wireless transmitter includes an optical
transmitting device and the at least one Wireless headphone
set includes a photosensitive device.
[0024] According to an eighteenth aspect of the invention,
the at least one Wireless transmitter and the at least one
Wireless headphone set include an antenna.
[0025] According to a nineteenth aspect of the invention,
the at least one Wireless headphone set includes a digital
to-analog converter.
[0026] These and other aspects, features and advantages of
the present invention Will become apparent from the fol
loWing detailed description of preferred embodiments,
Which is to be read in connection With the accompanying
draWings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0027]
FIG. 1A is a block diagram illustrating the ele
connections betWeen the system components may differ
depending upon the manner in Which the present invention
is programmed. Given the teachings herein, one of ordinary
skill in the related art Will be able to contemplate these and
similar implementations or con?gurations of the present
invention.
[0033]
To facilitate a clear understanding of the present
invention, a brief description of the invention Will noW be
given, folloWed by a more detailed description With respect
to FIGS. 1-3. As noted above, the invention is directed to a
display device for a vehicle. The display device mounts at a
rear portion of a vehicle seat, With audio being supplied to
the vehicle passengers by a Wireless transmitter included in
the display device. The passengers receive the transmitted
audio through Wireless headphones. Thus, only passengers
desiring to receive the audio are provided With the same
through the Wireless headphones. Passengers desiring a
quiet environment are not disrupted by the reproduction of
the audio. As is knoWn to one of ordinary skill in the related
art, the Wireless headphones Will include a Wireless receiver
for receiving the Wireless signals transmitted by the Wireless
transmitter of the display device.
[0034]
It is to be appreciated that the display device of the
ments of a display device for a vehicle according to an
invention may include more than one Wireless transmitter. In
illustrative embodiment of the invention;
such a case, different listeners may simultaneously listen to
different audio outputs. For example, if a video cassette
[0028]
FIG. 1B is a block diagram illustrating the ele
ments of a display device for a vehicle according to another
player (VCP) and a compact disk (CD) player are coupled to
illustrative embodiment of the invention;
the display device through an included interface, then one
vehicle passenger may listen to the audio output correspond
ing to the VCP While another vehicle passenger may listen
to the audio output corresponding to the CD player. Thus,
the display device need not be coupled to external devices
that include a video output. Further, since the display device
[0029] FIG. 2 is a diagram illustrating a Wireless trans
mitter interacting With a Wireless headphone set based on
optical and/or RF transmission, according to an illustrative
embodiment of the invention; and
[0030]
FIG. 3 is a block diagram illustrating a display
of the invention may include picture-in-picture capability,
device for a vehicle according to an illustrative embodiment
tWo vehicle passengers may simultaneously Watch and listen
of the invention.
to tWo different movies.
DETAILED DESCRIPTION OF PREFERRED
EMBODIMENTS
[0031] It is to be understood that the present invention
may be implemented in various forms of hardWare, soft
Ware, ?rmWare, special purpose processors, or a combina
[0035] It is to be appreciated that the Wireless signals can
be any type of Wireless signal including, but not limited to,
radio frequency and infrared signals. It is to be noted that the
current transmission capability (bandWidth) of infrared sig
nals is approximately 1.5 to 2.0 Mbits/sec, With a maximum
projected bandWidth of 16 Mbits/sec.
tion thereof. Preferably, the present invention is imple
[0036]
mented as a combination of both hardWare and softWare, the
ments of a display device 112 for a vehicle according to an
softWare being an application program tangibly embodied
illustrative embodiment of the invention. The display device
on a program storage device. The application program may
be uploaded to, and executed by, a machine comprising any
112 mounts at a rear portion of a vehicle seat. The display
device 112 includes a ?rst Wireless transmitter 128, a second
suitable architecture. The machine may be implemented on
Wireless transmitter 130, a receiver 125, facilities for per
a computer platform having hardWare such as one or more
forming signal processing and/or signal conversion 127
(hereinafter “signal processing/conversion facilities”), and a
display 192 (e.g., screen and rendering portion). The display
central processing units (CPU), a random access memory
(RAM), and input/output (I/O) interface(s). The computer
platform may also include an operating system and micro
instruction code. The various processes and functions
described herein may either be part of the microinstruction
code or part of the application program (or a combination
thereof) Which is executed via the operating system. In
addition, various other peripheral devices may be connected
to the computer platform such as an additional data storage
device.
[0032] It is to be further understood that, because some of
the constituent system components depicted in the accom
panying Figures may be implemented in softWare, the actual
FIG. 1A is a block diagram illustrating the ele
device 112 is intended to interface With at least one of the
folloWing through the receiver 125: a TV tuner 114, a video
cassette player (VCP) 116, a digital video disk (DVD) player
118, a compact disk (CD) player 120, an amplitude modu
lation/frequency modulation (AM/FM) radio 122, a video
game player 126, and so forth.
[0037] The TV tuner 114, the VCP 116, the DVD player
118, the CD player 120, the AM/F M radio 122, and the video
game player 126 may also be collectively referred to herein
as input devices 190. It is to be appreciated that the devices
described above With respect to the input devices 190 are
Jan. 27, 2005
US 2005/0020320 A1
merely illustrative and, thus, other devices may also be
employed in accordance With the invention, While maintain
ing the spirit and scope thereof.
[0038] The receiver 125 may include a bus for receiving
audio and video signals. Moreover, the receiver 125 may
include separate buses for receiving the audio and video
(e.g., electrostatic pen) near the screen. In a preferred
embodiment of the invention, a liquid crystal display is
employed Which uses active matrix technology.
[0044]
In the case When display device 112 includes
picture-in-picture or split screen capability, tWo or more
signals.
different input devices 190 (e. g., the DVD player 118 and the
TV tuner 114) may be input to the display device 112
[0039] The ?rst Wireless transmitter 128 and the second
Wireless transmitter 130 each have multiplexing capabilities
to enable the selection of a particular device (e.g., one of the
plexors (not shoWn) may be employed to determine Which
display WindoW is to reproduce a particular video signal
input devices 190) Whose audio signal is to be Wirelessly
through the receiver 125. In such a case, additional multi
from a plurality of video signals. Given the teachings of the
invention provided herein, one of ordinary skill in the related
art Will contemplate these and various other variations and
con?gurations of the elements of the invention, While main
taining the spirit and the scope thereof.
transmitted. Selection is made through a SELECT (SEL)
input. Of course, Wireless transmitters Without such multi
plexing capabilities may also be used; hoWever, in such a
case, a separate multiplexor(s) Would be coupled betWeen
such transmitters and the audio outputs of the input devices
190.
Which is operatively coupled to the receiver 125, may
[0040]
perform such processing/conversion prior to any video sig
The elements of the display device 112 are
intended to interact With a ?rst Wireless headphone set 152
and a second Wireless headphone set 154. It is to be
appreciated that While the illustrative embodiment of FIG.
1A is shoWn With tWo Wireless headphone sets (i.e., 152,
154), the invention is not so limited and, thus, any number
of Wireless headphone sets may be used in conjunction With
the invention. For example, one or more headphones may be
used (e.g., one Wireless headphone set for each passenger).
[0041]
The ?rst Wireless transmitter 128 and the second
Wireless transmitter 130 transmit Wireless signals to the ?rst
Wireless headphone set 152 and the second Wireless head
phone set 154, respectively. Of course, other con?gurations
are possible Which maintain the spirit and scope of the
invention, as readily contemplated by one of ordinary skill
[0045] The signal processing/conversion facilities 127,
nals being provided to the display device 112 and any audio
signals being provided to the Wireless transmitters 128 and
130. Of course, other arrangements are possible, including
having separate signal processing/conversion facilities for
the video signals and the audio signals.
[0046] The signal processing/conversion facilities 127
provides the audio signals input to the receiver 125 to the
Wireless transmitters 128, 130, and provides the video
signals input to the receiver 125 to the display (e.g., screen
and rendering portion).
[0047] The signal processing/conversion facilities 127
may include, but are not limited to, Digital Signal Processors
(DSPs), and facilities for performing encoding/decoding,
in the related art.
encrypting/decrypting, compressing/decompressing, ana
log-to-digital conversion (ADC), digital-to-analog conver
[0042] An antenna 136 may be located Within or external
to the vehicle. For example, antenna 136 may be the original
antenna included in the vehicle, Which is typically used to
rection may include, but is not limited to, Cyclic
Redundancy Checking (CRC), Error Correction Code or
receive frequencies associated With AM/FM radio stations
and television stations. Such an antenna is typically located
in the Windshield or protruding from the exterior of the
vehicle. Moreover, the antenna 136 may be a special purpose
antenna, capability of receiving frequencies corresponding
to, for example, satellite communications from a satellite or
satellite netWork. The satellite communications may include
movies and other media types (e.g., music, global navigation
data, e-mail, and so forth). Of course, the antenna 136 may
receive various media types (including those mentioned
above) from other types of transmission netWorks (e.g.,
land-based). In any event, the antenna 136 is coupled to the
display device 112 through the receiver 125.
[0043] It is to be appreciated that the display device 112 is
not limited to any particular kind of display device. Accord
ingly, display devices may be used Which include, but are
not limited to, liquid crystal displays (LCDs), light emitting
diodes (LEDs), and gas plasma. It is to further appreciated
that any variations of the aforementioned types of displays
may be used. For example, With respect to liquid crystal
displays, active matrix (e.g., thin ?lm transistor) technology
or passive matrix (e.g., dual scan) technology may be
employed. The display device 112 may also employ touch
sion (DAC), error correction, and ?ltering. Such error cor
Error Checking and Correcting (ECC), checksum, and so
forth. With respect to, for example, encoding/decoding,
encrypting/decrypting, and compressing/decompressing, the
former of each pair may be performed by any of the input
devices and the latter is performed by the signal processing/
conversion facilities 127.
[0048]
It is to be noted that the Wireless signals may be
encoded to prevent interference betWeen the tWo Wireless
headphone sets 152, 154. Such encoding may be based on
technologies such as, for example, spread spectrum tech
nology.
[0049]
In many cases, the facilities described above may
be implemented by one or more codecs. In other cases,
additional and/or other circuitry may be required. It is to be
appreciated that one of ordinary skill in the related art Will
contemplate these and various other facilities for performing
signal processing and/or signal conversion, While maintain
ing the spirit and scope of the invention.
[0050]
FIG. 1B is a block diagram illustrating the ele
ments of a display device 512 for a vehicle according to
another illustrative embodiment of the invention.
screen technology, so that users can interact With the console
[0051]
by either touching the screen or placing a speci?ed device
mitter 510, a receiver 125, signal processing/conversion
The display device 512 includes a Wireless trans
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US 2005/0020320 A1
facilities 127, and a display 192 (e.g., screen and rendering
portion). The display device 112 is intended to interface With
the input devices 190.
[0052] Similar to the display device 112 of FIG. 1A, the
display device 512 of FIG. 1B is intended to interact With
a plurality of Wireless headphone sets. For illustrative pur
poses, the ?rst Wireless headphone set 152 and the second
Wireless headphone set 154 are shoWn.
[0053] It is to be appreciated that the main difference
betWeen the display device 112 of FIG. 1A and the display
device 512 of FIG. 1B is that the ?rst and the second
Wireless transmitters 128, 130 have been replaced by the
Wireless transmitter 510 of FIG. 1B, the latter for Wirelessly
transmitting the audio signals (hereinafter also referred to as
“audio programs”, With each input device outputting a
particular audio program) based upon Code-Division Mul
tiple Access (CDMA) technology. The coding and other
related operations may be performed by the Wireless trans
mitter 510 and/or by the signal processing/conversion facili
ties 127. In any event, the requisite circuitry for implement
ing CDMA technology Would be required both on the
transmission end (the display device) and the receiving end
(the Wireless headphone sets). Such circuitry may include,
for eXample, convolutional encoders, Walsh code generators
in the related art Will contemplate these and various other
arrangements for implementing the invention, While main
taining the spirit and scope thereof.
[0057] In the illustrative embodiment of FIG. 1B, the
Wireless signals (audio programs) are shoWn transmitted in
tWo distinct Ways. In the ?rst approach 550, the left and right
audio channels of each of the plurality of audio programs are
transmitted as separate streams. In the second approach 560,
the left and right audio channels of each of the plurality of
audio programs are combined onto a single stream. In the
latter case, separation of the channels is performed in the
Wireless headphone sets. In any event, the plurality of audio
programs are then combined, superimposed onto a carrier
frequency, and transmitted by the Wireless transmitter 510
for receipt by the Wireless headphone sets. These and
various other Ways in Which to transmit a plurality of audio
programs to a plurality of Wireless headphones sets may be
readily contemplated and implemented by those of ordinary
skill in the art, While maintaining the spirit and scope of the
invention.
[0058] FIG. 2 is a diagram illustrating the Wireless trans
mitter 128 interacting With the Wireless headphone set 152
based on optical and/or RF transmission, according to an
illustrative embodiment of the invention. It is to be appre
and PN (pseudo random number) sequence generators, com
ciated that the folloWing description is also applicable to the
biners, modulators, de-modulators, correlators, digital-to
Wireless transmitters 130 and/or 510. The Wireless transmit
ter 128 includes an optical transmitting device 212 (e.g., an
LED, a laser, and so forth) and an antenna 214. The Wireless
headphone set 152 includes a photosensitive device 252
(e.g., a phototransistor, a solar cell(s), a SEED (self-optic
effect device), and so forth) and an antenna 254. The optical
analog converters (DACs), analog-to-digital converters
(ADCs), and so forth. Given the teachings of the invention
provided herein, one of ordinary skill in the related art Will
readily contemplate the elements required to implement
CDMA in a display device according to the invention, While
maintaining the spirit and scope thereof.
[0054]
It is to be appreciated that the use of CDMA
technology enables a single transmitter (i.e., Wireless trans
mitter 510) to transmit all programs simultaneously, With a
user being able to select the program he or she intends to
hear via a selector located on, for eXample, his or her
Wireless headphone set. Moreover, the use of CDMA tech
nology enables all of the available frequency bandWidth to
be used, While simultaneously minimiZing interference.
transmitting device 212 and the photosensitive device 252
are used for Wireless transmission and reception of optical
signals, respectively. The antenna 214 and the antenna 254
are used for Wireless transmission and reception of RF
signals, respectively.
[0059]
In the case of Wireless optical transmission, the
optical transmitting device 212 Wirelessly transmits optical
(digital) signals to the Wireless headphone set 152 by pulsing
its light output (e.g., off equals a Zero (0) and on equals a one
The photosensitive device 252 in the Wireless head
[0055] According to one illustrative embodiment of the
invention, the audio programs may be pre-stored in a
memory system such that pre-speci?ed memory locations
are used to store speci?c audio programs (i.e., a pre-de?ned
phone set 152 detects the optical signals Wirelessly trans
mitted by the optical transmitting device 212.
mapping). Of course, a dynamic mapping approach may also
digital-to-analog converter (DAC) 256 for converting the
digital signals into analog signals. The analog signals are
be employed. In either case, a memory addressing scheme
may be used to Write the programs into memory and read
them therefrom. A processor and governing program or
operating system may be employed to control the memory
operations. The processor, governing program or operating
system, and memory system may be implemented as part of
[0060]
The Wireless headphone set 152 also includes a
then provided to a left channel speaker 282 and a right
channel speaker 284 either directly or after processing by
another signal processing/conversion facilities 197. For
eXample, in the latter case, the DAC 256 may simply convert
the signal processing/conversion facilities 127, the Wireless
the Wireless digital signal to a composite analog signal,
Which is then separated by the other signal processing/
transmitter 510, a combination thereof, or separately as
conversion facilities 197 into right and left audio channels
independent elements of the display device 512. Of course,
(When the DAC 256 is separate from the signal processing/
conversion facilities 197). Other processing by the signal
processing/conversion facilities 197 may include, for
other arrangements are possible and readily contemplated by
one of ordinary skill in the art.
[0056] It is to be appreciated that the audio programs need
not be stored but may be directly processed by, e.g., the
signal processing/conversion facilities 127 and/or the Wire
less transmitter 510 in real-time (or With slight delay) for the
purposes of transmitting in CDMA format. Given the teach
ings of the invention provided herein, one of ordinary skill
eXample, ?ltering of the analog signals.
[0061] It is to be appreciated that different frequencies
may be used for right channels and left channels. For
eXample, as shoWn in FIG. 1A, the Wireless headphone set
152 receives a left channel audio signal corresponding to 2.3
MHZ and a right channel audio signal corresponding to 2.8
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US 2005/0020320 A1
MHZ, While the Wireless headphone set 154 receives a left
channel audio signal corresponding to 2.5 MHZ and a right
channel audio signal corresponding to 3.0 MHZ. Such an
arrangement alloWs for more than one Wireless headphone
set to be actively used Without frequency interference ther
ebetWeen. Given the teachings of the invention provided
herein, one of ordinary skill in the related art Will contem
plate these and other approaches for facilitating Wireless
transmission betWeen the Wireless transmitters 128, 130 and
the Wireless headphone sets 152, 154 While maintaining the
spirit and scope of the invention.
[0062] It is to be appreciated that a processor 276 may be
used to control the functions of the DAC 256 and the signal
processing/conversion facilities 197. It is to be further
appreciated that the DAC 256 may be separate from (as
shoWn) or part of the signal processing/conversion facilities
receiving composite video and audio signals, or altogether
separate buses for video and audio, Which corresponding
processing circuitry for each.
[0068] It is to be appreciated that While the display device
312 is shoWn to include tWo Wireless transmitters (128, 130),
any number of Wireless transmitters may be employed
including only one Wireless transmitter. It is to be further
appreciated that the locations of the Wireless transmitters
128, 130 in FIG. 3 are merely illustrative. Such transmitters
(including the case When only one transmitter is used) may
be located anyWhere on or in the display device. For
eXample, a transmitter(s) may be located on the top, bottom,
side, front, or rear of the display device. The transmitter may
be ?ush, fully or partial protruding With respect to one or
more surfaces of the display devices. Given the teachings of
197.
the invention provided herein, one of ordinary skill in the
related art Will contemplate these and various other locations
[0063] The preceding description regarding the functions
employed by the display device.
of the DAC 256 and the signal processing/conversion facili
and con?gurations of the Wireless transmitters that are
ties 197 may also be applied in the case of RF transmission.
In such a case, the transmission and reception functions of
[0069] Associated With the display device 312 of FIG. 3
the optical transmitting device 212 and the photosensitive
Wireless headphone set 154 (not shoWn), Which receive
device 252 are replaced by those of the antennas 214 and
254, respectively. That is, the antenna 214 is used to Wire
lessly transmit an RF signal Which is then received by the
Wireless signals from the ?rst Wireless transmitter 128 and
antenna 254. A modulator/demodulator may be included or
herein, one of ordinary skill in the related art Will contem
described herein With reference to the accompanying draW
ings, it is to be understood that the present system and
method is not limited to those precise embodiments, and that
various other changes and modi?cations may be affected
therein by one skilled in the art Without departing from the
scope or spirit of the invention. All such changes and
plate these and other optical transmitting devices, photosen
modi?cations are intended to be included Within the scope of
associated With the antennas 214 and 254 to perform such
functions as are knoWn to one of ordinary skill in the related
art.
[0064] Given the teachings of the invention provided
sitive devices, and con?gurations of the elements of the
invention Which alloW for the transmission and reception of
any type of Wireless signal (e.g.,analog and digital) and
appropriate processing/conversion to facilitate reproduction
of the content of the Wireless signals provided by the
Wireless transmitters 128, 130.
[0065] The preceding description of the display device 112
has primarily focused on features that may be included in the
are the ?rst Wireless headphone set 152 and the second
the second Wireless transmitter 130, respectively.
[0070] Although the illustrative embodiments have been
the invention as de?ned by the appended claims.
What is claimed is:
1. A display device for a vehicle having a seat, compris
ing:
an assembly housing, Wherein at least a portion of the
assembly housing is adapted to be mounted in the seat;
at least one media source operatively coupled to the
display device for providing at least one of video and
display device 112 to enhance the operation thereof. A
audio signals from the at least one media source to the
description of mounting arrangements for the display device
display device; and
112 Will noW be given.
[0066]
FIG. 3 is a block diagram illustrating a display
device 312 for a vehicle according to an illustrative embodi
ment of the invention. FIG. 3 is shoWn With the minimum
number of elements, so that the mounting arrangement of the
display device is emphasiZed. In particular, the display
device 312 is mounted on the rear of a seat of the vehicle.
[0067] The display device 312 includes the ?rst Wireless
transmitter 128, the second Wireless transmitter 130, and the
receiver 125. Also shoWn With a dashed line is the Wireless
transmitter 510, Which may be employed in embodiments of
the invention Which implement CDMA technology. The
folloWing description, hoWever, Will be directed to the ?rst
and the second Wireless transmitters 128, 130. The video and
audio signals from the input devices 190 are provided to the
display device 112 through the receiver 125. In a preferred
embodiment, the receiver 125 includes separate inputs for
video signals and audio signals. Of course, other arrange
ments are possible, including, but not limited to, inputs for
at least one Wireless transmitter adapted to Wirelessly
transmit the audio signals to at least one Wireless
receiver or speaker.
2. The display device according to claim 1, Wherein the
assembly housing is mounted in a headrest of the vehicle
seat.
3. The display device according to claim 1, Wherein the
assembly housing is mounted in a body of the vehicle seat.
4. The display device according to claim 1, Wherein the
assembly housing includes a face portion adapted to be
mounted substantially ?ush With the vehicle seat.
5. The display device according to claim 4, Wherein the at
least one Wireless transmitter is positioned on the face
portion.
6. The display device according to claim 1, Wherein the
audio signals are Wirelessly transmitted as at least one of
radio frequency and infrared signals.
7. The display device according to claim 1, Wherein the at
least one media source includes at least one of a television
Jan. 27, 2005
US 2005/0020320 A1
tuner, a video cassette player (VCP), a compact disk (CD)
player, a digital video disk (DVD) player, an AM/FM radio,
a video game player, global navigation data, and e-mail.
8. The display device according to claim 1, further com
prising signal processing facilities adapted to perform at
least one of signal processing and signal conversion, With
19. The display device according to claim 16, further
comprising at least one multiplexer adapted to select a media
source of the at least tWo media sources Whose audio output
is to be Wirelessly transmitted to the at least one Wireless
receiver or speaker.
respect to at least one of the audio signals and the video
20. The display device according to claim 16, Wherein the
assembly housing is mounted in a headrest of the vehicle
signals.
seat.
9. The display device according to claim 8, Wherein the
signal processing facilities are adapted to perform at least
21. The display device according to claim 16, Wherein the
assembly housing is mounted in a body of the vehicle seat.
22. The display device according to claim 16, Wherein the
assembly housing includes a face portion adapted to be
mounted substantially ?ush With the vehicle seat.
23. A display device for a vehicle having a seat, compris
one of digital signal processing, encoding, decoding,
encrypting, decrypting, compressing, decompressing, ana
log-to-digital conversion (ADC), digital-to-analog conver
sion (DAC), and error correction.
10. The display device according to claim 1, Wherein the
display device employs one of a liquid crystal display
(LCD), light emitting diodes (LEDs), and a gas plasma.
11. The display device according to claim 1, Wherein the
display device includes one of picture-in-picture and split
screen capability.
12. The display device according to claim 1, Wherein the
at least one Wireless transmitter comprises an optical trans
mg:
an assembly housing, Wherein at least a portion of the
assembly housing is adapted to be mounted in the seat;
at least tWo media sources operatively coupled to the
display device for providing at least one of audio and
video signals from the at least tWo media sources to the
display device; and
mitting device.
13. The display device according to claim 1, Wherein the
at least one Wireless transmitter comprises an antenna.
14. The display device according to claim 1, Wherein the
at least one Wireless transmitter is adapted to transmit the
audio signals based on Code-Division Multiple Access
(CDMA) technology.
15. The display device according to claim 1, Wherein the
display device is adapted to reproduce the video signals for
display.
16. A display device for a vehicle having a seat, compris
mg:
an assembly housing, Wherein at least a portion of the
assembly housing is adapted to be mounted in the seat;
at least tWo media sources operatively coupled to the
display device for providing at least one of audio and
video signals from the at least tWo media sources to the
display device; and
a Wireless transmitter adapted to Wirelessly transmit the
audio signals from the at least tWo media sources to at
least one Wireless receiver or speaker.
17. The display device according to claim 16, Wherein the
Wireless transmitter simultaneously transmits the audio sig
nals from the at least tWo media sources to the at least one
Wireless receiver or speaker.
18. The display device according to claim 16, Wherein the
Wireless transmitter simultaneously transmits the audio sig
nals from the at least tWo media sources to the at least one
Wireless receiver or speaker and to at least one other Wireless
receiver or speaker.
at least tWo Wireless transmitters adapted to Wirelessly
transmit the audio signals from the at least tWo media
sources to a plurality of Wireless receivers or speakers.
24. The display device according to claim 23, Wherein a
?rst Wireless transmitter is adapted to Wirelessly transmit
audio signals from one of the at least tWo media sources to
a ?rst Wireless receiver or speaker, and Wherein a second
Wireless transmitter is adapted to Wirelessly transmit audio
signals from another of the at least tWo input sources to a
second Wireless receiver or speaker.
25. The display device according to claim 24, Wherein the
?rst and second Wireless transmitters simultaneously trans
mit the audio signals from the at least tWo media sources to
the ?rst and second Wireless receivers or speakers.
26. The display device according to claim 24, Wherein
each of the ?rst and second Wireless transmitters are opera
tively coupled to a multiplexer for selecting the one or the
other of the tWo input sources Whose audio signals are to be
Wirelessly transmitted.
27. The display device according to claim 23, Wherein the
assembly housing is mounted in a headrest of the vehicle
seat.
28. The display device according to claim 23, Wherein the
assembly housing is mounted in a body of the vehicle seat.
29. The display device according to claim 23, Wherein the
assembly housing includes a face portion adapted to be
mounted substantially ?ush With the vehicle seat.
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