WO2004107745A1 - 放送受信システム - Google Patents
放送受信システム Download PDFInfo
- Publication number
- WO2004107745A1 WO2004107745A1 PCT/JP2004/006729 JP2004006729W WO2004107745A1 WO 2004107745 A1 WO2004107745 A1 WO 2004107745A1 JP 2004006729 W JP2004006729 W JP 2004006729W WO 2004107745 A1 WO2004107745 A1 WO 2004107745A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- television
- broadcast
- parent
- signal
- child
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
- H04N21/43637—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wireless protocol, e.g. Bluetooth®, RF or wireless LAN [IEEE 802.11]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
- H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
- H04N21/4263—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific tuning arrangements, e.g. two tuners
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
- H04N21/4436—Power management, e.g. shutting down unused components of the receiver
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/63—Generation or supply of power specially adapted for television receivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/21—Server components or server architectures
- H04N21/214—Specialised server platform, e.g. server located in an airplane, hotel, hospital
- H04N21/2143—Specialised server platform, e.g. server located in an airplane, hotel, hospital located in a single building, e.g. hotel, hospital or museum
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/38—Transmitter circuitry for the transmission of television signals according to analogue transmission standards
- H04N5/40—Modulation circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/46—Receiver circuitry for the reception of television signals according to analogue transmission standards for receiving on more than one standard at will
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/50—Tuning indicators; Automatic tuning control
Definitions
- the present invention includes a parent television that receives broadcast waves to display a video and outputs a transmission radio wave of a received video, and a sub television that receives a transmission radio wave from the parent television and displays a video.
- the present invention relates to a broadcast receiving system.
- Patent Document 1 JP-A-8-79720
- the parent device does not have a display, and the parent device cannot view broadcast video.
- the ability to have two tuners and to be able to watch two programs on one television set by using picture-in-picture technology has been a problem. Can not.
- a cable connection between one television set and another monitor allows the user to watch TV at two places in the house.This is a cable connection, so another monitor is far away from the television set. It cannot be installed in a position where it has been placed.
- an object of the present invention is to provide a broadcast receiving system capable of continuously viewing on a child television.
- a broadcast receiving system of the present invention includes a receiving unit that receives a broadcast wave, a signal processing unit that generates at least a video signal based on the received broadcast wave, and a video processing unit.
- a parent television device comprising: a display for displaying an image based on an image signal; and a means for generating at least an image transmission radio wave based on the received broadcast wave; a receiving unit for receiving the transmission radio wave;
- a television set having a signal processing unit that generates at least a video signal based on the video signal, and a display that performs video display using the video signal, and a broadcast receiving system.
- the master TV device While the means for wirelessly transmitting the information indicating the status are provided, the master TV device is provided with means for wirelessly receiving the information indicating the TVN status, and the master TV device is automatically turned off when the TV is turned off. While the video display on the display is stopped, while receiving the information indicating the TV ON state of the slave TV device, the broadcast reception process and the transmission Characterized in that it is configured to continue the radio reception processing of the wave generation processing information.
- the parent television device When the parent television device is turned off and does not receive the information indicating the television on state of the child television device, the broadcast reception process and the transmission radio wave generation process stop, and the radio reception of the child television information is stopped. Processing may be configured to continue. According to this, when the TV is turned off in the child TV, the broadcast reception processing and the transmission radio wave generation processing are stopped in the parent TV, but the radio reception processing of the child TV information is continued. When this happens, the parent TV can judge this TV ON.
- the parent television device has a plurality of power supply units, and the power supply unit that is in charge of supplying power to the electric consuming elements involved in each of the processes is configured to stop supplying power to the electric consuming elements when the processing is stopped. It is good to be constituted. Thus, useless power consumption in the parent television can be suppressed.
- the parent television device includes a plurality of tuners, a plurality of input terminals for inputting output signals from the tuners or a signal generated based on the output signals, and transmits an arbitrary signal to an arbitrary output terminal.
- Selection means capable of outputting. According to this, it is possible to simultaneously watch different programs on the parent TV and the child TV.
- a broadcast can be viewed on both the parent TV and the child TV without providing a tuner in the child TV, and the television can be viewed on the parent TV.
- FIGS. 1 and 2 a broadcast receiving system according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.
- FIG. 1 is a block diagram illustrating a configuration of a parent television device (hereinafter, referred to as a parent TV), and FIG.
- satellite antenna 1A receives a satellite broadcast wave (BSZCS) and receives a terrestrial antenna.
- BSZCS satellite broadcast wave
- 1B receives terrestrial broadcast waves. These antennas 1 ⁇ • IB transmit received signals to tuner 2 ⁇ .
- the analog terrestrial tuner 2C tunes the RF (high-frequency signal) from the antenna 1B and converts it to an intermediate frequency (IF).
- This tuner 2C uses an initial stage amplifier that amplifies the received RF signal, an AGC amplifier that varies the gain with a control voltage of an external force, and an IF signal that is the difference frequency between the received RF signal and the local frequency generated by the voltage controlled oscillator. It is provided with a mixer to be generated, a PLL circuit for controlling the voltage controlled oscillator to a predetermined constant frequency output state based on channel selection data given from the control unit 3, a detection circuit, and the like.
- the detection circuit detects the intermediate frequency video signal, extracts the NTSC signal, and detects the intermediate frequency audio signal.
- the NTSC signal is converted into a digital signal by the A / D converter 4 A and supplied to the NTSC video decoder 5.
- the audio signal is converted into a digital signal by the A / D converter 4B.
- the NTSC video decoder 5 generates a digital luminance signal Y and color signals Cb and Cr.
- the MPEG video encoder 6A receives the luminance signal Y and the chrominance signals Cb and Cr and generates an MPEG (Moving Picture Experts Group) video stream.
- the MPEG audio encoder 6B receives the digital audio signal and generates an MPEG audio stream.
- the multiplexer 7 receives the video stream and the audio stream and generates a transport stream.
- the digital terrestrial tuner 2B has the same frequency selection function as the analog terrestrial tuner 2C described above, and also includes a demodulation circuit, a deinterleave circuit, an error correction circuit, and the like, and demodulates the selected digital modulation signal. To output the transport stream.
- the digital BSZCS tuner 2A has a frequency selection function like the digital terrestrial tuner 2B, and also has a demodulation circuit, a deinterleave circuit, an error correction circuit, and the like. Is output.
- the matrix switch 8 receives the transport stream output from the multiplexer 7 and the transport stream output from the tuners 2 ⁇ ⁇ 2B, and converts one transport stream serving as a channel selection broadcast of the parent TV itself. A process of selecting and supplying the data to the demultiplexer (DEMUX) 9 is performed. In addition, a process of selecting one transport stream for the child TV and supplying the transport stream to the communication control unit 16 is performed. The matrix switch 8 is controlled by the control unit 3.
- the demultiplexer 9 separates the transport stream supplied from the matrix switch 8 into an MPEG video stream, an audio stream, PSI / SI (Program Specific Information / Service Information), and the like.
- the demultiplexer 3 supplies the video stream to the MPEG video decoder 10A, supplies the audio stream to the MPEG audio decoder 10B, and supplies PSI / SI and the like to the control unit 3.
- a plurality of channels are multiplexed in a transport stream in digital broadcasting, and a process for selecting an arbitrary channel from the multiplexed channels is performed in the transport stream from the PSI / SI. It is possible to determine which packet ID is used for multiplexing and to extract the data. Also, the selection of the transport stream can be made based on the PSI / SI information.
- the MPEG video decoder 10A decodes the input variable length code to obtain a quantization coefficient and a motion vector, and performs an inverse DCT transform, a motion compensation control based on a motion vector, and the like.
- MP The output of the EG video decoder 10A is converted into digital RGB data by the matrix 1 IB.
- the output of the A / D converter 4A (the signal from the analog terrestrial tuner 2C) is converted into digital RGB data by the matrix 11A, and only one of the two RGB data is selected by the switching switch 12A.
- the switching switch 12A is controlled by the control unit 3.
- the selected RGB data is supplied to the display 14 as an analog RGB signal by the D / A converter 13A.
- the MPEG audio decoder 10B decodes the input encoded signal to generate audio data.
- the audio data generated by the decoding is converted into an audio signal by the DZA converter 13B. Only one of the audio signal generated through the DZA converter 13B and the audio signal from the analog terrestrial tuner 2C is selected by the switch 12B.
- the switching switch 12B is controlled by the control unit 3.
- the selected audio signal is supplied to the speaker 15.
- the audio signal from the analog terrestrial tuner 2C is selected by the switching switch 12B, and the video data that has passed through the A / D converter 4A and the matrix 11A is switched by the switching switch 12A. Selected by.
- the communication control unit 16, the radio unit 17, and the antenna 18 are components for transmitting a transport stream to the child TV and performing communication with the child TV, and include a Caro circuit with an error correction code. ⁇ It is equipped with a modulation circuit and the like.
- the error correction code adding circuit adds a parity check code to the transport stream packet.
- the modulation circuit mounts the transport stream packet on the transmission wave at a predetermined bit rate by digital modulation processing.
- the content (information) of communication with the child TV includes child TV ON / OFF information and channel selection information from the child TV.
- the parent TV and the child TV may be connected by a wireless LAN.
- the remote control transmitter 20 is provided with various keys and sends various commands to the parent TV.
- a signal light (remote control signal) indicating a command corresponding to the keys is transmitted. It is transmitted from a light emitting unit (not shown).
- a remote control light receiver (not shown) receives the signal light, converts the signal light into an electric signal, and supplies the electric signal to the control unit 3.
- the operation keys 21 are provided on the parent TV housing unit, and provide key operation information by the user to the control unit 3.
- Modem 22 Operates under the control of the control unit 3 in a dial-up connection, for example, when transmitting billing information of a pay broadcast and data in a two-way data service.
- the control unit 3 executes various controls in the parent TV, and in particular, performs power supply control as a process that is effective in the present invention.
- the parent TV has a power supply A, a power supply B, and a power supply C.
- the power supply unit A supplies power to the control unit 3, the modem 22, the communication control unit 16, and the wireless unit 17.
- Power supply section B includes tuners 2A '2B' 2C and stream
- the control unit 3 controls the power switch 23 and the power switch 24.
- the OFF control of the power switch 24 is executed, an operation state of only a circuit that receives power supply from the power supply unit A and the power supply unit B is formed. Further, when the OFF control of the power switches 23 and 24 is executed, only the circuit that receives the power supply from the power source A operates.
- the control unit 3 turns on the power switch 23 and the power switch 24 when the TV ON operation is performed on the parent TV. When a TV OFF operation is performed on the parent TV, the control unit 3 turns off the power switch 24 and determines the TV ON / OFF state of the child TV. This determination is made by the communication determination unit 3a in the control unit 3.
- the communication determination unit 3a determines that the child TV is on when the signal indicating that the child TV is on is received from the communication control unit 16.
- a signal indicating the television ON of the child TV is transmitted from the child TV when the television N operation is performed on the child TV.
- the child TV shall periodically transmit a signal indicating the ⁇ N state in the ⁇ N state, and if the parent TV has not received the signal indicating the ⁇ N state for a certain period of time, the child TV sets the television to the television. It may be determined to be OFF.
- the control unit 3 maintains the ⁇ N state of the power switch 23 when determining that the child TV is the television ON. On the other hand, when it is determined that the child TV is turned off, the power switch 23 is turned off. Even if the power switch 23 is turned off, the power supply from the power supply unit A is maintained. After the power switch 23 is turned off, the child TV If it is determined that the power switch has been turned on, the control unit 3 turns on the power switch 23 again.
- the above contents are arranged as follows. 1. When the parent TV is on, power supply A, power supply B and power supply C operate. 2. When the parent TV is off (standby state): 1) If the child TV is on, power supply A and power supply B operate. 2) If the child TV is off, only the power supply A operates.
- the antenna 31, the radio unit 32, and the communication control unit 33 receive the transport stream digitally modulated and transmitted from the parent TV.
- the transmission information (such as TV ONZOFF information and channel selection information in the child TV) output from the control unit 40 is transmitted via the communication control unit 33, the radio unit 32, and the antenna 31.
- the demultiplexer (DEMUX) 34 separates the supplied transport stream into an MPEG video stream, an audio stream, and the like.
- the demultiplexer 34 supplies the video stream to the MPEG video decoder 35A, and supplies the audio stream to the MPEG audio decoder 35B.
- the MPEG video decoder 35A decodes the input variable length code to obtain a quantization coefficient and a motion vector, and performs inverse DCT transform, motion compensation control based on a motion vector, and the like.
- the output of the MPEG video decoder 35A is converted by the matrix 36 into digital RGB data.
- the RGB data is supplied to a display 38 as an analog RGB signal by a D / A converter 37A.
- the MPEG audio decoder 35B decodes the input encoded signal to generate audio data.
- the audio data generated by the decoding is converted into an audio signal by the D / A converter 37B.
- the audio signal is supplied to the speaker 39.
- the control unit 40 determines a command based on signals from the remote control transmitter 41 and the operation keys 42 and executes various processes.
- the child TV is powered by battery 43, powered by commercial power, and powered by horsepower.
- the broadcast can be viewed on both the parent TV and the child TV without providing the tuner in the child TV.
- the parent TV has multiple tuners, and any tuner output can be selected by matrix switch 8. This allows the child TV to watch programs other than the program received by the parent TV.
- the power supply control to each circuit is performed on the parent TV, it is possible to view the television on the child TV even when the parent TV is turned off (even in the standby state). Become. If the parent TV is off and the child TV is off, the power supply by the power supply unit B is stopped, and wasteful power consumption is avoided.
- FIG. 1 is a block diagram showing a configuration of a parent television in a broadcast receiving system according to an embodiment of the present invention.
- FIG. 2 is a block diagram showing a configuration of a slave television in the broadcast receiving system according to the embodiment of the present invention.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Engineering & Computer Science (AREA)
- Software Systems (AREA)
- Television Receiver Circuits (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2004800147015A CN1795673B (zh) | 2003-05-29 | 2004-05-19 | 放送接收系统 |
| US10/557,701 US7643092B2 (en) | 2003-05-29 | 2004-05-19 | Broadcast receiving system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003-151978 | 2003-05-29 | ||
| JP2003151978A JP4212415B2 (ja) | 2003-05-29 | 2003-05-29 | 放送受信システム |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004107745A1 true WO2004107745A1 (ja) | 2004-12-09 |
Family
ID=33487246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2004/006729 Ceased WO2004107745A1 (ja) | 2003-05-29 | 2004-05-19 | 放送受信システム |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US7643092B2 (ja) |
| JP (1) | JP4212415B2 (ja) |
| CN (1) | CN1795673B (ja) |
| WO (1) | WO2004107745A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7990479B2 (en) | 2004-05-21 | 2011-08-02 | Panasonic Corporation | Communication system and communication method |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8706023B2 (en) | 2008-01-04 | 2014-04-22 | 3D Radio Llc | Multi-tuner radio systems and methods |
| EP1364469A2 (en) | 2001-02-20 | 2003-11-26 | Caron S. Ellis | Enhanced radio systems and methods |
| US8868023B2 (en) | 2008-01-04 | 2014-10-21 | 3D Radio Llc | Digital radio systems and methods |
| US8699995B2 (en) | 2008-04-09 | 2014-04-15 | 3D Radio Llc | Alternate user interfaces for multi tuner radio device |
| US8909128B2 (en) * | 2008-04-09 | 2014-12-09 | 3D Radio Llc | Radio device with virtually infinite simultaneous inputs |
| JP2007110563A (ja) * | 2005-10-14 | 2007-04-26 | Sharp Corp | インテリジェントスイッチ |
| JP4348550B2 (ja) * | 2005-10-19 | 2009-10-21 | ソニー株式会社 | フロントエンドモジュール及びテレビジョン受像機 |
| KR101046588B1 (ko) * | 2005-11-16 | 2011-07-06 | 삼성전자주식회사 | 신호처리장치 및 그 제어방법 |
| CN101034966B (zh) * | 2007-04-06 | 2010-05-26 | 华为技术有限公司 | 一种机顶盒和子母机顶盒系统 |
| EP2174435A2 (en) * | 2007-07-26 | 2010-04-14 | Nxp B.V. | Audio switch with digital and analogue stage |
| CN101388985B (zh) * | 2007-09-13 | 2011-04-20 | 深圳Tcl新技术有限公司 | 提供多种节能模式的电子装置及方法 |
| JP2010041220A (ja) * | 2008-08-01 | 2010-02-18 | Canon Inc | データ処理装置、データ処理方法、及びプログラム |
| CA2825707A1 (en) | 2011-01-21 | 2012-07-26 | Tommy Yu | Systems and methods for selecting digital content channels using low noise block converters including digital channelizer switches |
| WO2012112693A1 (en) | 2011-02-16 | 2012-08-23 | Mobius Semiconductor, Inc. | Optical converter with adc based channelizer for optical lnb system |
| CN102196311B (zh) * | 2011-06-09 | 2013-07-10 | 深圳市同洲电子股份有限公司 | 一种数字电视接收系统及方法 |
| US20120324516A1 (en) * | 2011-06-14 | 2012-12-20 | Mediatek Singapore Pte. Ltd. | Method and system to provide a consumer electronics system with improved functionality |
| WO2013088676A1 (ja) * | 2011-12-15 | 2013-06-20 | 株式会社ソニー・コンピュータエンタテインメント | 情報処理システムおよびコンテンツダウンロード方法 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11196345A (ja) * | 1997-10-07 | 1999-07-21 | Masanobu Kujirada | 表示システム |
| JP2002034023A (ja) * | 2000-07-17 | 2002-01-31 | Sony Corp | 双方向通信システム、表示装置、ベース装置および双方向通信方法 |
| JP2002158889A (ja) * | 2000-11-21 | 2002-05-31 | Yamaha Corp | リモコン付きテレビジョン受信機 |
| JP2002158888A (ja) * | 2000-11-21 | 2002-05-31 | Yamaha Corp | リモコン付きテレビジョン受信機 |
| JP2003087673A (ja) * | 2001-09-06 | 2003-03-20 | Sony Corp | 映像表示装置 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0879720A (ja) | 1994-09-08 | 1996-03-22 | Sony Corp | 親子テレビジョン装置 |
| JP3627431B2 (ja) | 1997-03-04 | 2005-03-09 | 株式会社タツノ・メカトロニクス | テレビ受信システム |
| US6263503B1 (en) * | 1999-05-26 | 2001-07-17 | Neal Margulis | Method for effectively implementing a wireless television system |
| US6759967B1 (en) * | 2000-03-14 | 2004-07-06 | Qwest Communications International, Inc. | Remote control for activating household video products and services |
-
2003
- 2003-05-29 JP JP2003151978A patent/JP4212415B2/ja not_active Expired - Fee Related
-
2004
- 2004-05-19 US US10/557,701 patent/US7643092B2/en not_active Expired - Fee Related
- 2004-05-19 CN CN2004800147015A patent/CN1795673B/zh not_active Expired - Fee Related
- 2004-05-19 WO PCT/JP2004/006729 patent/WO2004107745A1/ja not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11196345A (ja) * | 1997-10-07 | 1999-07-21 | Masanobu Kujirada | 表示システム |
| JP2002034023A (ja) * | 2000-07-17 | 2002-01-31 | Sony Corp | 双方向通信システム、表示装置、ベース装置および双方向通信方法 |
| JP2002158889A (ja) * | 2000-11-21 | 2002-05-31 | Yamaha Corp | リモコン付きテレビジョン受信機 |
| JP2002158888A (ja) * | 2000-11-21 | 2002-05-31 | Yamaha Corp | リモコン付きテレビジョン受信機 |
| JP2003087673A (ja) * | 2001-09-06 | 2003-03-20 | Sony Corp | 映像表示装置 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7990479B2 (en) | 2004-05-21 | 2011-08-02 | Panasonic Corporation | Communication system and communication method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004356938A (ja) | 2004-12-16 |
| CN1795673B (zh) | 2010-09-29 |
| US20070064157A1 (en) | 2007-03-22 |
| CN1795673A (zh) | 2006-06-28 |
| US7643092B2 (en) | 2010-01-05 |
| JP4212415B2 (ja) | 2009-01-21 |
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