Interfacing system for stream source apparatus and display apparatus and interfacing method thereof

14 Pages·2013·1.41 MB·English

US 20030147010A1
(19) United States
(12) Patent Application Publication (10) Pub. N0.: US 2003/0147010 A1
J oung et al. (43) Pub. Date: Aug. 7, 2003
(54) INTERFACING SYSTEM FOR STREAM (52) US. Cl. ............................................................ .. 348/565
SOURCE APPARATUS AND DISPLAY
APPARATUS AND INTERFACING METHOD
THEREOF (57) ABSTRACT
(76) Inventors: Chul Yong Joung, Seoul (KR); Yong
An interfacing method and system for a stream source
H0 Cho, Sungnam (KR); Nam Seok
apparatus and a display device, Which includes a stream
Cho, Ohsan source apparatus receiving analog/digital signals from exter
nal analog/digital equipments to generate a plurality of
Correspondence Address: transmi- ssi- on packet streams correspondi- ng to the analog/
:EWART KOLASCH & BIRCH digital signals, the stream source apparatus synthesizing a
plurality of the transmission packet streams into a single
FALLS CHURCH’ VA 22040-0747 (Us) synthesized transmission packet stream to transmit the syn
_ thesized transmission packet stream by Wireless, a display
(21) Appl' NO" 10/355’027 apparatus receiving the synthesized transmission packet
(22) Filed, Jan 31 2003 stream transmitted from the stream source apparatus, the
' l ’ display apparatus separating the synthesized transmission
(30) Foreign Application priority Data packet stream into a transmission packet stream correspond
ing to a main screen and a transmission packet stream
Feb. 1, 2002 (KR) ..................................... .. 05940/2002 Corresponding to a sub-screen, the display apparatus decod
ing the transmission packet streams corresponding to the
Publication Classi?cation main screen and the sub-screen respectively to generate
digital video/audio signals to display on a display screen by
(51) Int. Cl.7 ..................................................... .. H04N 5/45 a PIP form.
100
I A
130 CONTROL SIGNAL OUTPUT CENTRAL PROCESSING UNIT 110 150
YANT I7 _TR _A N_S _MI _S S_I O_N _ P_A C_K _E T_ S_T _R E_A _M _G E_N _ER _A T_I _N G_ U_N I_T _ .1: 130 140 /
l
' DIGITAL BROADCAST ‘I
: RECEIVING UNIT \121 I TRANSMISSION
‘ ‘ PACKET STREAM
DIGITAL ' DIGITAL VIDEO/ 1 __ MULTIPLEXING
DEVICE I AUDIO SIGNAL ( UNIT
; RECEIVING UNIT 122 124 l 160
l 123-1
1 1 DIGITAL TRANSMISSION
ANAIDG ' ANALOG SIGNAL / ( SW‘TCHING PACKET STREAM MEMORY
DEVICE : RECEIVING UNITS 151- MPEG | UINT PROGJE‘ISISING
I ——’
ANALOG I ANALoG SIGNAL ANALOG M } I 170
DEVICE I RECEIVING UNITS SWITJCIIIEITNG 1
I
ll 123-11 123-? _» ENCODER ‘ WRIIAIIISEIEISTTING/
I 2ND MPEG I T VING UNIT
ANALOG I ANALOG SIGNAL ———~ I RECEI
DEVICE } RECEIVING UNITS l
L_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ~ _ _ _ _ _ _ 4 _ _ _ J
DISPLAY APPARATUS
(200)
Patent Application Publication Aug. 7, 2003 Sheet 1 0f 4 US 2003/0147010 A1
FIG. 1
RELATED ART

Patent Application Publication Aug. 7, 2003 Sheet 4 0f 4 US 2003/0147010 A1
S301
S302
S304
SELECT MAIN OR
UB SCREEN I
CONTROL DISPLAY APPARATUS
ACCORDING TO
REMOTE CONTROL SIGNAL
TRANSMIT REMOTE CONTROL SIGNAL TO
STREAM SOURCE APPARATUS
I
STREAM SOURCE APPARATUS
RECEIVES REMOTE CONTROL SIGNAL
I
STREAM SOURCE APPARATUS
w SELECTS TRANSMISSION PACKET STREAM OF
5310 MAIN 0R SUB SCREEN ACCORDING TO
REMOTE CONTROL SIGNAL
I
GENERATE RESPONSE SIGNAL TO
S312 w OUTPUT TO DISPLAY APPARATUS
I
DISPLAY APPARATUS RECEIVES RESPONSE
$314M“ SIGNAL TO ACKNOWLEDGE TRANSMISSION OF
REMOTE CONTROL SIGNAL
( START )
US 2003/0147010 A1 Aug. 7, 2003
INTERFACING SYSTEM FOR STREAM SOURCE transmission packet stream corresponding to digital video
APPARATUS AND DISPLAY APPARATUS AND and audio signals by playing a predetermined play media
INTERFACING METHOD THEREOF such as a digital VTR (video tape recorder), a DVD (digital
versatile disc) player, or the like, an analog unit 30 output
[0001] This application claims the bene?t of the Korean
ting analog video and audio signals like a VTR, a computer
Patent Application No. P2002-05940 ?led on Feb. 1, 2002,
system, or the like by playing a play media such as video
Which is hereby incorporated by reference.
tape or the like, and a stream source device 40 receiving a
digital broadcast signal as Well as the transmission packet
BACKGROUND OF THE INVENTION
stream outputted from the digital unit 20 and the analog
[0002] 1. Field of the Invention video and audio signals outputted from the analog unit 30 to
sWitch selectively like a set-top boX, the stream source
[0003] The present invention relates to an interfacing
device 40 transmitting the sWitched signals to the display
system for stream source apparatus and display apparatus
device 10.
and an interfacing method thereof Which have the stream
source apparatus synthesiZe to transform a plurality of [0012] In the interfacing system, the digital unit 20 is
transmission packet streams into a single synthesiZed trans connected to the source stream source device 40 through a
mission packet stream form to transmit by Wireless and have Wire such as IEEE 1394 cable.
the display apparatus receive the synthesiZed transmission
[0013] The interfacing system for the above-constructed
packet stream to display on a screen as a PIP (picture in
display and stream source device according to a related art
picture) form.
is eXplained in detail as folloWs.
[0004] 2. Description of the Related Art
[0014] First of all, the digital unit 20 formats the digital
[0005] Recent electronic technology developments con video and audio signals attained by playing the predeter
tribute to the developments of various ?at panels display mined play media into the transmission packet stream to
(FPD) devices. In a display device such as a TV screen and output, and the outputted transmission packet stream is
a monitor, the ?at panel display device replaces a cathode transmitted to the stream device 40 through the Wire such as
ray tube due to its features and advantages of lightWeight, IEEE 1394 cable.
thin design, and the like to employ as a display screen for [0015] MeanWhile, the analog unit 30 plays the predeter
representing a predetermined image.
mined play media to generate the analog video and audio
[0006] A plasma display panel (PDP) using photo-lumi signals, and then transmits the generated analog video
signals such as R/G/B signals and the analog audio signals
nescence (PL) as a ?orescent material, a ?eld emission
display device (FED) using cathode luminescence (CL), a to the stream source device 40 through the Wire. In this case,
liquid crystal display device (LCD), an organic electrolu the analog unit 30 is connected to the stream source device
minescent display device, and the like are employed as ?at 40 through an eXclusive cable.
panel display devices in various ?elds.
[0016] The stream source device 40 directly receives the
[0007] In such ?at panel display devices, the PDP has such digital broadcast signal through a built-in ATSC tuner or the
features and advantages as high brightness, high lumines like. In this case, the received digital broadcast signal
cence ratio, loW unit cost of production, eXcellent charac includes the transmission packet stream corresponding to the
digital video and audio signals.
teristics of heat & cold resistance, feasibility of full color
implementation, and lightWeight. Hence, the PDP is [0017] Moreover, the stream source device 40 transforms
equipped With a large siZe screen and is Widely used as a the transmission packet stream inputted from the digital unit
display screen for a display device for TV set, computer 20 into the analog video and audio signals, sWitches the
monitor, or the like. transformed analog video and audio signals or the inputted
analog video and audio signals transmitted from the analog
[0008] Moreover, the display device used as the display
unit 30 selectively, and transmits the sWitched analog video
screen of the PDP has the feature and advantage of thin
design and lightWeight, thereby being under development and audio signals to the display device 10.
for a Wall TV. [0018] In this case, the stream source device 40 transmits
the analog R/G/B signals and audio signals of L and R
[0009] The display device using the PDP receives video
channels to the display device 10 through the respective
and audio signals from a stream source apparatus such as a
cables or a single eXclusive cable.
set-top boX to output video and audio. For this purpose, the
display and stream source device according to the related art [0019] HoWever, connected to the various units through
are constructed to transmit/receive the video and audio the Wire(s), the display device 10 requires a plurality of input
signals of the stream source apparatus through a Wire as Well terminals.
as transmit/receive a predetermined control signal through
[0020] Moreover, When the display device 10 connected to
the Wire.
the stream source device 40 through the predetermined cable
[0010] FIG. 1 illustrates a diagram of an interfacing is hung on a Wall, the cable is eXposed betWeen the display
system for stream source device and display device accord device 10 and the stream source device 40 to de?le the
ing to a related art. appearance of installation.
[0011] Referring to FIG. 1, an interfacing system for a [0021] Recently, in order to overcome the above-ex
stream source device and a display device, like a Wall plained problems, apparatuses for connecting the display
monitor or a Wall TV, includes a Wall display device 10 using device 10 to the stream source apparatus are under devel
a PDP as a display screen, a digital unit 20 outputting a opment.
US 2003/0147010 A1 Aug. 7, 2003
[0022] In this case, the stream source device 40 com receiving analog/digital signals from external analog/digital
presses various video/audio signals into a transmission equipments to generate a plurality of transmission packet
packet stream form to transmit by Wireless, and the display streams corresponding to the analog/digital signals, the
device 10 receives to process the transmitted transmission stream source apparatus synthesiZing a plurality of the
packet stream. And, a predetermined control signal and a transmission packet streams into a single synthesiZed trans
predetermined response signal can be transmitted by Wire mission packet stream to transmit the synthesiZed transmis
less betWeen the display and stream source device 10 and 40. sion packet stream by Wireless and a display apparatus
receiving the synthesiZed transmission packet stream trans
[0023] HoWever, transmitting the transmission packet
mitted from the stream source apparatus, the display appa
stream corresponding to a predetermined video/audio signal
ratus separating the synthesiZed transmission packet stream
by Wireless, the stream source device 40 enables to transmit
into a transmission packet stream corresponding to a main
the transmission packet stream corresponding to a single
screen and a transmission packet stream corresponding to a
video/audio signal only.
sub-screen, the display apparatus decoding the transmission
[0024] Even if the display device 10 is equipped With a packet streams corresponding to the main screen and the
PIP function, the stream source device 40 enables to the sub-screen respectively to generate digital video/audio sig
transmission packet stream corresponding to the single nals to display on a display screen by a PIP form.
video/audio signal only. Hence, the display device 10 is
[0031] Preferably, the stream source apparatus includes a
unable to perform the PIP function, Whereby a user fails to
transmission packet stream generating unit receiving the
Watch at least tWo images on the screen. analog/digital signals from the external analog/digital equip
ments to generate a plurality of the transmission packet
SUMMARY OF THE INVENTION
streams, a digital sWitching unit selecting a plurality of the
transmission packet streams to be multiplexed from a plu
[0025] Accordingly, the present invention is directed to an
rality of the transmission packet streams generated from the
interfacing system for stream source apparatus and display
transmission packet stream generating unit, a transmission
apparatus and an interfacing method thereof that substan
packet stream multiplexing unit synthesiZing a plurality of
tially obviate one or more problems due to limitations and
the transmission packet streams selected by the digital
disadvantages of the related art.
sWitching unit into the single synthesiZed transmission
[0026] An object of the present invention is to provide a packet stream, a memory storing the synthesiZed transmis
stream source apparatus synthesiZing to transform a plurality sion packet stream of the transmission packet stream mul
of transmission packet stream into a single synthesiZed tiplexing unit, a transmission packet stream processing unit
transmission packet stream form to transmit a display appa judging Whether the synthesiZed transmission packet stream
ratus by Wireless. stored in the memory exceeds a previously set amount or
not, a Wireless transmitting/receiving unit reading the syn
[0027] Another object of the present invention is to pro
thesiZed transmission packet stream stored in the memory if
vide a display apparatus Which receives to separate the
the synthesiZed transmission packet stream stored in the
transmission packet stream, Which is synthesiZed and trans
memory exceeds the previously set amount, the Wireless
mitted by Wireless from the stream source apparatus, into a
transmitting/receiving unit modulating the read synthesiZed
plurality of transmission packet streams and processes a
transmission packet stream into a radio frequency signal to
plurality of the transmission packet streams With PIP to
transmit by Wireless, and a central processing unit control
display on a screen.
ling operations of the respective units.
[0028] A further object of the present invention is to
[0032] More preferably, the transmission packet stream
provide an interfacing method for stream source apparatus
generating unit includes a digital broadcast signal receiving
and display apparatus enabling to have the stream source
unit receiving a digital broadcast signal from an external
apparatus carry out a corresponding operation according to
antenna to transform into a transmission packet stream form
a remote control signal by having the display apparatus
to output, a digital video/audio signal receiving unit receiv
receive the remote control signal by a user’s operation of a
ing digital video/audio signals as a transmission packet
remote controller and having the display apparatus transmit
stream from the external digital equipment, a plurality of
the received remote control signal to the stream source
analog signal receiving units receiving analog video/audio
apparatus by Wireless.
signals from the external analog equipments, and an MPEG
[0029] Additional advantages, objects, and features of the encoder transforming the analog video/ audio signals output
invention Will be set forth in part in the description Which ted from the analog signal receiving units into the transmis
folloWs and in part Will become apparent to those having sion packet stream from.
ordinary skill in the art upon examination of the folloWing
[0033] Preferably, the display apparatus includes a Wire
or may be learned from practice of the invention. The
less transmitting/receiving unit receiving the synthesiZed
objectives and other advantages of the invention may be
transmission packet stream transmitted by Wireless from the
realiZed and attained by the structure particularly pointed out
stream source apparatus, a memory storing the synthesiZed
in the Written description and claims hereof as Well as the
appended draWings. transmission packet stream received from the Wireless trans
mitting/receiving unit, a transmission packet stream process
[0030] To achieve these objects and other advantages and ing unit judging Whether the synthesiZed transmission
in accordance With the purpose of the invention, as embod packet stream stored in the memory exceeds a previously set
ied and broadly described herein, an interfacing system for amount or not, a PIP processing unit, if the transmission
a stream source apparatus and a display apparatus according packet stream processing unit judges that the synthesiZed
to the present invention includes a stream source apparatus transmission packet stream stored in the memory 240
US 2003/0147010 A1 Aug. 7, 2003
exceeds the previously set amount, reading to separate the of having the stream source apparatus receive the transmit
synthesized transmission packet stream stored in the ted remote control signal and multiplexing a plurality of
memory, the PIP processing unit processing the separated transmission packet streams into a single synthesiZed trans
transmission packet stream by PIP, and a central processing mission packet stream according to the remote control signal
unit receiving the synthesiZed transmission packet stream to to transmit to the display apparatus by Wireless.
control operations of the respective units.
[0037] It is to be understood that both the foregoing
[0034] In another aspect of the present invention, a stream general description and the folloWing detailed description of
source apparatus includes a transmission packet stream the present invention are exemplary and explanatory and are
generating unit receiving analog/digital signals from exter intended to provide further explanation of the invention as
nal analog/digital equipments to generate a plurality of claimed.
transmission packet streams corresponding to the analog/
digital signals, a digital sWitching unit selecting a plurality BRIEF DESCRIPTION OF THE DRAWINGS
of the transmission packet streams to be multiplexed from a
plurality of the transmission packet streams generated from [0038] The accompanying draWings, Which are included
the transmission packet stream generating unit, a transmis to provide a further understanding of the invention and are
sion packet stream multiplexing unit synthesiZing a plurality incorporated in and constitute a part of this application,
of the transmission packet streams selected by the digital illustrate embodiment(s) of the invention and together With
sWitching unit into a single synthesiZed transmission packet the description serve to explain the principle of the inven
stream, a memory storing the synthesiZed transmission tion.
packet stream of the transmission packet stream multiplex
[0039] In the draWings:
ing unit, a transmission packet stream processing unit judg
ing Whether the synthesiZed transmission packet stream [0040] FIG. 1 illustrates a diagram of an interfacing
stored in the memory exceeds a previously set amount or system for stream source device and display device accord
not, a Wireless transmitting/receiving unit reading the syn ing to a related art;
thesiZed transmission packet stream stored in the memory if
[0041] FIG. 2 illustrates a block diagram of a stream
the synthesiZed transmission packet stream stored in the
source apparatus according to the present invention;
memory exceeds the previously set amount, the Wireless
transmitting/receiving unit modulating the read synthesiZed [0042] FIG. 3 illustrates a block diagram of a display
transmission packet stream into a radio frequency signal to apparatus according to the present invention; and
transmit by Wireless, and a central processing unit control
[0043] FIG. 4 illustrates a signal ?owchart of an interfac
ling operations of the respective units.
ing method according to the present invention.
[0035] In a further aspect of the present invention, a
display apparatus includes a Wireless transmitting/receiving DETAILED DESCRIPTION OF THE
unit receiving a synthesiZed transmission packet stream INVENTION
transmitted by Wireless from a stream source apparatus, a
[0044] Reference Will noW be made in detail to the pre
memory receiving to store the synthesiZed transmission
ferred embodiments of the present invention, examples of
packet stream therein, a transmission packet stream process
Which are illustrated in the accompanying draWings.
ing unit judging Whether the synthesiZed transmission
packet stream stored in the memory exceeds a previously set [0045] FIG. 2 illustrates a block diagram of a stream
amount or not, a PIP processing unit, if the transmission source apparatus 100 according to the present invention.
packet stream processing unit judges that the synthesiZed
[0046] Referring to FIG. 2, a stream source apparatus 100
transmission packet stream stored in the memory exceeds
according to the present invention includes a central pro
the previously set amount, reading to separate the synthe
cessing unit 110 controlling a series of operation for trans
siZed transmission packet stream stored in the memory, the
mitting a plurality of transmission packet streams corre
PIP processing unit processing the separated transmission
sponding to various video/audio signals to a display
packet stream by PIP, and a central processing unit receiving
apparatus 200 that Will be explained later, the central pro
the synthesiZed transmission packet stream to control opera
cessing unit 110 controlling the stream source apparatus 100
tions of the respective units.
according to a remote control signal, Which is received from
[0036] In another further aspect of the present invention, the display apparatus 200, by an operation of a remote
an interfacing method for stream source apparatus and controller and simultaneously generating a response signal
display apparatus includes a judging step of judging Whether corresponding to the received remote control signal to
a remote control signal inputted to a display apparatus in transmit to the display apparatus 200 by Wireless, a trans
accordance With a user’s operation of a remote controller is mission packet stream generating unit 120 generating a
a signal for controlling an operation of the stream source plurality of transmission packet streams corresponding to a
apparatus or the display device, a performing step of having plurality of the inputted video/audio signals, a digital
the display device carry out a corresponding operation sWitching unit 130 selecting to output a plurality of the
according to the inputted remote control signal if the judging transmission packet streams, Which Will be multiplexed, by
step judges that the remote control signal is the signal for sWitching a plurality of the transmission packet streams
controlling the display apparatus, a transmitting step of generated from the transmission packet stream generating
having the display apparatus transmit the inputted remote unit 120, a transmission packet stream multiplexing unit 140
control signal by Wireless to the stream source apparatus if synthesiZing a plurality of the transmission packet streams
the judging step judges that the remote control signal is the outputted from the digital sWitching unit 130 to transform
signal of controlling the stream source apparatus, and a step into a single transmission packet stream form, a memory 150
US 2003/0147010 A1 Aug. 7, 2003
storing the synthesized packet stream transformed by the is a signal for controlling an operation of the stream source
transmission packet stream multiplexing unit 140, a trans apparatus 100 or controlling the display apparatus 200 to
mission packet stream processing unit 160 checking Whether carry out a corresponding operation according to the remote
the transmission packet streams exceeding a previously set control signal if the remote control signal is a signal for
amount are stored in the memory 150 or not and generating controlling an operation of the display apparatus 200, a
a transmission message if the transmission packet streams Wireless transmitting/receiving unit 230 receiving the syn
exceeding the previously set amount are stored in the thesiZed transmission packet stream and the response signal
memory 150, and a Wireless transmitting/receiving unit 170 corresponding to the remote control signal transmitted by
reading to transform the synthesiZed transmission packet Wireless from the stream source apparatus 100 and trans
stream stored in the memory 150 into a radio frequency mitting the remote control signal outputted from the central
signal When the transmission message is generated from the processing unit 220 to the stream source apparatus 100 by
transmission packet stream processing unit 160, the Wireless Wireless, a memory 240 storing the synthesiZed transmission
transmitting/receiving unit 170 transmitting the radio fre packet stream received from the Wireless transmitting/re
quency signal to the display apparatus 200 by Wireless or ceiving unit 230, a transmission packet stream processing
transmitting/receiving the remote control signal according to unit 250 checking Whether the synthesiZed transmission
the user’s operation of the remote controller and the packet stream exceeding a previously set amount is stored in
response signal corresponding to the control signal to/from the memory 240 or not, the transmission packet stream
the display apparatus 200 by Wireless. processing unit 250 generating a transmission message if the
synthesiZed transmission packet stream exceeding the pre
[0047] In this case, the transmission packet stream gener
viously set amount is stored in the memory 240, and a PIP
ating unit 120 includes a digital broadcast receiving unit 121 processing unit 260 reading the synthesiZed transmission
having an AT SC(advanced television systems committee)
packet stream stored in the memory 240 to carry out a PIP
tuner, a VSB(vestigial side band) chip, and the like to
processing if the transmission message is generated from the
receive a digital broad cast signal of a predetermined chan
transmission packet stream processing unit 250.
nel through an external antenna ANT, the digital broadcast
receiving unit 121 transforming the received digital broad [0051] The PIP processing unit 260 includes a transmis
cast signal into a transmission packet stream form to output, sion packet stream demultiplexer 261 reading the synthe
a digital signal receiving unit 122 receiving to output a siZed transmission packet stream from the memory 240 to
transmission packet stream corresponding to digital video/ separate into transmission packet streams corresponding to
audio signals from an external digital equipment, a plurality a main screen and a sub-screen respectively When the
of analog signal receiving units 123-1, 123-2, . . . , and 123-n transmission message is generated from the transmission
receiving analog video/audio signals from a plurality of packet stream processing unit 250, a ?rst MPEG decoder
external analog equipments to output, an analog sWitching 262 generating a digital video signal and a digital audio
unit 124 sWitching a plurality of the analog video/audio signal by decoding the transmission packet stream corre
signals outputted from a plurality of the analog signal sponding to the main screen separated by the transmission
receiving units 125 according to a control of the central packet stream demultiplexer 261, a second MPEG decoder
processing unit 110 to select tWo of the analog video/audio 263 generating a digital video signal by decoding the
signals, and ?rst and second MPEG encoders 125 and 126 transmission packet stream corresponding to the sub-screen
encoding the tWo analog video/audio signals selected by the separated by the transmission packet stream demultiplexer
analog sWitching unit 124 by moving picture expert group 261, an audio processing unit 264 processing the digital
(hereinafter abbreviated MPEG), respectively to transform audio signal of the main screen generated from the ?rst
into the transmission packet stream form. MPEG decoder 262 to output to a speaker or the like, and a
video processing unit 265 carrying out the PIP processing on
[0048] The respective units inside the transmission packet
the digital video signals of the main screen and the sub
stream generating unit 120, the digital sWitching unit 130,
screen generated respectively from the ?rst and second
the transmission packet stream multiplexing unit 140, the
MPEG decoders 262 and 263 to display a PIP image on a
memory 150, the transmission packet stream processing unit
display screen.
160, and the Wireless transmitting/receiving unit 170 are
connected to a control bus (not shoWn in the draWing) to [0052] In this case, the Wireless transmitting/receiving unit
carry out a predetermined operation in accordance With the 230 of the display apparatus 200, the memory 240, the
control of the central processing unit 110. transmission packet stream processing unit 250, and the
respective units inside the PIP processing unit 260 ar3
[0049] FIG. 3 illustrates a block diagram of a display
connected to the control bus to carry out a predetermined
apparatus according to the present invention.
operation according to the control of the central processing
[0050] Referring to FIG. 3, a display apparatus 200 unit 220.
according to the present invention includes a remote control
[0053] An interfacing system for stream source apparatus
receiving unit 210 receiving a remote control signal accord
and display apparatus and an interfacing method thereof
ing to a user’s operation, a central processing unit 220
according to the present invention are explained in detail by
controlling a series of operation of receiving to PIP-process
referring to the attached draWings of FIG. 2 and FIG. 3 as
the synthesiZed transmission packet stream transmitted by
folloWs.
Wireless from the stream source apparatus 100 and simul
taneously judging the remote control signal received by the [0054] First of all, by the control of the central processing
remote control receiving unit 210, the central processing unit 110, the digital broadcast receiving unit 121 of the
unit 220 transmitting the remote control signal to the stream transmission packet stream generating unit 120 receives the
source apparatus 100 by Wireless if the remote control signal digital broadcast signal of a predetermined channel from the
US 2003/0147010 A1 Aug. 7, 2003
external antenna ANT using the built-in AT SC tuner, and [0063] Subsequently, the transmission packet stream pro
then the built-in VSB chip or the like transforms the received cessing unit 160 keeps monitoring an amount of the syn
digital broadcast signal into the transmission packet stream thesiZed transmission packet stream stored in the memory. If
form to output to the digital sWitching unit 130. the amount of the synthesiZed transmission packet stream
stored in the memory 150 exceeds a previously set amount,
[0055] Moreover, the digital video/audio signal receiving
the transmission packet stream processing unit 160 gener
unit 122 of the transmission packet stream generating unit
ates to output the transmission message 170 to the Wireless
120 receives the transmission packet stream corresponding transmitting/receiving unit 170.
to the digital video/audio signals transmitted from the exter
nal digital equipment and then outputs the received trans [0064] The Wireless transmitting/receiving unit 170 reads
mission packet stream to the digital sWitching unit 130. the synthesiZed transmission packet stream stored in the
memory 150 in accordance With the transmission message,
[0056] MeanWhile, a plurality of the analog video/audio modulates the read synthesiZed transmission packet stream
signal receiving units 123 of the transmission packet stream into a radio frequency signal, and then transmits the radio
generating unit 120 receives a plurality of the analog video/ frequency signal to the display apparatus 200 by Wireless.
audio signals transmitted from a plurality of the external
[0065] And, the Wireless transmitting/receiving unit 130
analog equipments, respectively and the received analog
of the display unit 200 receives the synthesiZed transmission
video/ audio signals are then inputted to the analog sWitching
packet stream transmitted by Wireless from the Wireless
unit 124.
transmitting/receiving unit 170 of the stream source appa
[0057] Subsequently, the analog sWitching unit 124 ratus 100 to store in the memory 240.
sWitches to output tWo of a plurality of the inputted analog
[0066] The transmission packet stream processing unit
video/audio signals selected by the control of the central
250 keeps monitoring an amount of the synthesiZed trans
processing unit 110, and the outputted tWo analog video/
mission packet stream stored in the memory 240. If the
audio signals are then transformed into digital video/audio
amount of the synthesiZed transmission packet stream
signals by the ?rst and second MPEG encoders 125 and 126,
exceeds a previously set amount, the transmission packet
respectively. The digital video/audio signals are compressed
stream processing unit 250 generates a transmission mes
into the transmission packet stream to input to the digital
sage to output to the transmission packet stream demulti
sWitching unit 130.
plexer 261 of the PIP processing unit 260.
[0058] The digital sWitching unit 130 sWitches the tWo [0067] Then, the transmission packet stream demulti
transmission packet streams selected by the control of the plexer 261 reads the synthesiZed transmission packet stream
central processing unit 110 from a plurality of the transmis stored in the memory 240 in accordance With the transmis
sion packet streams inputted respectively from the digital sion message inputted from the transmission packet stream
broadcast signal receiving unit 121, the digital video/audio processing unit 250, and separates the read synthesiZed
signal receiving unit 122, and the ?rst and second MPEG transmission packet stream into the transmission packet
encoders 125 and 126, and then outputs the sWitched trans stream corresponding to the main screen and the transmis
mission packet streams. sion packet stream corresponding to the sub-screen.
[0059] In other Words, in accordance With the control of [0068] In this case, the transmission packet stream demul
the central processing unit 110, the digital sWitching unit 130 tiplexer 261, as mentioned in the forgoing description, uses
selects to output the transmission packet streams corre the stream type guide information inserted in the header of
sponding to the main screen and the sub-screen respectively the synthesiZed transmission packet stream to separate the
among a plurality of the transmission packet streams input read synthesiZed transmission packet stream into the trans
ted from the ?rst and second MPEG encoders 125 and 126. mission packet streams corresponding to the main screen
and the sub-screen respectively.
[0060] The transmission packet streams corresponding to
the main screen and the sub-screen respectively are then [0069] The ?rst MPEG decoder 262 decodes the separated
inputted to the transmission packet stream multiplexing unit transmission packet stream corresponding to the main screen
140. by MPEG, and then outputs the digital video and audio
signals according to the MPEG-decoded transmission
[0061] The transmission packet stream multiplexing unit packet stream. And, the second MPEG decoder 263 decodes
140 synthesiZes the transmission packet streams correspond the separated transmission packet stream corresponding to
ing to the main screen and the sub-screen to transform into the sub-screen by MPEG, and then outputs the digital video
the single synthesiZed transmission packet stream form, and signal according to the MPEG-decoded transmission packet
then stores the transformed synthesiZed transmission packet stream.
stream in the memory 150.
[0070] The digital audio signal, Which is outputted from
[0062] In this case, When the transmission packet stream the ?rst MPEG decoder 262 and corresponds to the main
multiplexing unit 140 receives to separate the synthesiZed screen, is processed by the audio processing unit 264, and is
transmission packet stream transformed into the transmis then outputted to a speaker (not shoWn in the draWing) or the
sion packet stream form, it should be clearly distinguished like. The digital video signals, Which are outputted from the
Whether the synthesiZed transmission packet stream is a ?rst and second MPEG decoders 262 and 263 and corre
stream corresponding to the main screen or the sub-screen. spond to the main screen and the sub-screen, respectively,
Hence, for the purpose of the distinct, a stream type guide are inputted to the video processing unit 265, are synthesiZed
?eld including a guide information is inserted in a header of into the PIP form, and are then displayed on the screen.
the synthesiZed transmission packet stream. Hence, a user enables to Watch tWo kinds of images by PIP.