WO2007037478A1 - 無線伝送システム - Google Patents
無線伝送システム Download PDFInfo
- Publication number
- WO2007037478A1 WO2007037478A1 PCT/JP2006/319700 JP2006319700W WO2007037478A1 WO 2007037478 A1 WO2007037478 A1 WO 2007037478A1 JP 2006319700 W JP2006319700 W JP 2006319700W WO 2007037478 A1 WO2007037478 A1 WO 2007037478A1
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- WO
- WIPO (PCT)
- Prior art keywords
- signal
- wireless communication
- wireless
- initialization
- communication device
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
- H04N5/775—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
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- 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
- H04N21/43622—Interfacing an external recording device
-
- 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 or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
- H04N21/43637—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11]
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- 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
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
- H04N21/440209—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display for formatting on an optical medium, e.g. DVD
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/84—Television signal recording using optical recording
- H04N5/85—Television signal recording using optical recording on discs or drums
Definitions
- the present invention relates to a wireless communication device and a wireless transmission system, and in particular, wirelessly transmits a video signal and an audio signal output from a signal source device such as a DVD player or a set top box to a signal sink device such as a digital television.
- the present invention relates to a wireless communication apparatus and a wireless transmission system for transmission.
- DVI Digital Visual
- PDP plasma display device
- a DVI source device such as a DVD player or a set top box
- a DVI sink device such as a liquid crystal display device or a digital television device
- HPD Hot Plug Detect
- a control signal such as a 5 V voltage signal, which is a signal indicating the power supply timing to the signal sink device, is transmitted.
- HDMI High Definition Multi Media Interface
- HDMI source device which is a signal source device that transmits and receives signals compliant with the HDMI standard
- HD which is a signal sink device that transmits and receives signals compliant with the HDMI standard
- An HDMI source device such as a DVD player and a set top box, and an HDMI sink device such as a liquid crystal display device and a digital television device, in an HDMI system according to the prior art configured to include an MI sink device, It is connected via a single HDMI cable, which is a digital data transmission bus conforming to the HDMI standard. Therefore, there is an advantage that the wiring between AV devices can be simplified as compared with a DVI system in which a plurality of cables are required to transmit video and audio signals.
- HDMI standard as with the DVI standard, control signals such as the above HPD signal and 5 V voltage signal are transmitted in addition to the video signal and the audio signal. Furthermore, a conversion connector for connecting a DVI terminal, which is a data terminal compliant with the DVI standard, and a data terminal compliant with the HDMI standard and an HDMI terminal is also commercially available. Using this conversion connector, an HDMI source is used. It is possible to connect the device and the DVI sink device or the DVI source device and the HDMI sink device respectively.
- the HDMI standard includes the DVI standard.
- Patent Document 1 discloses a transmission system for transmitting a video signal and an audio signal by optical wireless communication.
- Patent document 1 Japanese Patent Application Laid-Open No. 2005-102161.
- the signal source device is a wall-mounted television device or a projector device installed on a ceiling
- the signal source device and the signal sink device There is a problem that the DVI cable and the audio cable or the HDMI cable to connect are required to be wired along the wall, which is bothersome and undesirable in appearance.
- the installation location and the management range of the devices are restricted by the length of the DVI cable and the audio cable or the HDMI cable connecting the devices.
- Patent Document 1 discloses a transmission system for transmitting a video signal and an audio signal by optical wireless communication, but transmits control signals such as an HPD signal and a 5 V voltage signal. It is necessary to connect AV devices using a cable, and has the same problems as the DVI system and the HDMI system according to the prior art.
- the object of the present invention is to solve the above problems, and it is possible to increase the degree of freedom of the installation location of the signal source device and the signal sink device as compared with the prior art. It is an object of the present invention to provide a wireless communication apparatus and a wireless transmission system using the same, which can simplify the connection between them without using a cable.
- a wireless communication apparatus transmits a first signal including at least a video signal from a signal source apparatus and receives a second signal including a first initialization signal.
- a wireless communication device which is a wireless communication device of
- First wireless communication means for receiving a second wireless signal including the first initialization signal from the second wireless communication device
- the first control means detects the first initialization signal when detecting an abnormality in communication between the first wireless communication device and the second wireless communication device. Generating a request signal for requesting the generation of the second wireless signal, and controlling the first wireless communication means to wirelessly transmit the request signal to the second wireless communication device. Do.
- the first control means may wirelessly transmit a third wireless signal including a second initialization signal to the second wireless communication apparatus.
- a signal sink apparatus connected to the second wireless communication apparatus is controlled to execute a predetermined second initialization process by controlling the wireless communication means.
- the first control means controls the first wireless communication means to wirelessly transmit the third wireless signal to the second wireless communication apparatus. Thereafter, the first initialization signal is output to the signal source device.
- the first signal includes an audio signal in addition to the video signal, and the video signal, the audio signal, the first initialization signal, and a transmission procedure thereof are: , It conforms to the HDMI standard.
- the video signal, the first initialization signal, and a transmission procedure thereof are based on the DVI standard.
- a wireless communication apparatus receives a first signal including at least a video signal.
- a first wireless signal including the first signal is received from a first wireless communication device, and the first initialization signal is wirelessly transmitted to the first wireless communication device as a second wireless signal.
- 2 wireless communication means
- a predetermined first initialization process is performed by controlling the second wireless communication unit to wirelessly transmit the first initialization signal as the second wireless signal to the first wireless communication device.
- second control means for controlling the signal source apparatus connected to the first wireless communication apparatus so as to execute the second control section.
- the second control means detects the first initialization signal when detecting an abnormality in communication between the first wireless communication apparatus and the second wireless communication apparatus.
- the second wireless communication means is controlled to wirelessly transmit to the first wireless communication device as the second wireless signal.
- the second wireless communication apparatus is connected to a signal sink apparatus
- the second control means When the second control means detects an abnormality in communication between the first wireless communication device and the second wireless communication device, the second control means generates a non-image silence signal having a predetermined specification to generate the signal sink. It is characterized by outputting to a device.
- the second control means requests generation of the second wireless signal including the first initialization signal from the first wireless communication apparatus. It is particularly preferable to control the second wireless communication means to wirelessly transmit the first initialization signal as the second wireless signal to the first wireless communication device in response to the signal. To be a reward.
- the second wireless communication device is connected to a signal sink device
- the second wireless communication means receives a third wireless signal including a second initialization signal from the first wireless communication device,
- the second control means converts the third wireless signal into the second initialization signal and outputs the second initialization signal to the signal sink device to execute a predetermined second initialization process. And controlling a signal sink device.
- the second control means outputs the second initialization signal to the signal sink apparatus, and then the second control means includes the first initialization signal.
- the second wireless communication means is controlled to wirelessly transmit a wireless signal to the first wireless communication device.
- the first signal includes an audio signal in addition to the video signal, and the video signal, the audio signal, the first initialization signal, and a transmission procedure thereof are: , It conforms to the HDMI standard.
- the video signal and the first initialization signal and their transmission procedure conform to the DVI standard.
- a wireless communication apparatus transmits a first signal including at least a video signal from a signal source apparatus and receives a second signal including a first initialization signal.
- a wireless communication device which is a wireless communication device of
- Second wireless communication means for receiving a second wireless signal including the first initialization signal from the second wireless communication device
- the first control means may include the first wireless communication device and the first wireless communication device.
- a request signal requesting generation of the second wireless signal including the first initialization signal is generated, and the request signal is And controlling the second wireless communication means to wirelessly transmit to the second wireless communication device.
- the first control means may wirelessly transmit a third wireless signal including a second initialization signal to the second wireless communication apparatus.
- a signal sink apparatus connected to the second wireless communication apparatus is controlled to execute a predetermined second initialization process by controlling the wireless communication means.
- the first control means controls the second wireless communication means to wirelessly transmit the third wireless signal to the second wireless communication apparatus. Thereafter, the first initialization signal is output to the signal source device.
- the first signal includes an audio signal in addition to the video signal, and the video signal, the audio signal, the first initialization signal, and a transmission procedure thereof are: , It conforms to the HDMI standard.
- the video signal, the first initialization signal, and a transmission procedure thereof are compliant with the DVI standard.
- a wireless communication apparatus is a second wireless communication apparatus that receives a first signal including at least a video signal and transmits a second signal including a first initialization signal.
- a wireless communication device receives a first signal including at least a video signal and transmits a second signal including a first initialization signal.
- Third wireless communication means for receiving a first wireless signal including the first signal from the first wireless communication device
- Fourth wireless communication means for wirelessly transmitting the first initialization signal as a second wireless signal to the first wireless communication device
- a predetermined first initialization process is performed by controlling the fourth wireless communication means to wirelessly transmit the first initialization signal as the second wireless signal to the first wireless communication device.
- second control means for controlling the signal source apparatus connected to the first wireless communication apparatus so as to execute the second control section.
- the second control means may include the first wireless communication device and When the communication abnormality with the second wireless communication apparatus is detected, the fourth initialization is performed so that the first initialization signal is wirelessly transmitted to the first wireless communication apparatus as the second wireless signal.
- the wireless communication means is controlled.
- the second wireless communication apparatus is connected to a signal sink apparatus
- the second control means When the second control means detects an abnormality in communication between the first wireless communication device and the second wireless communication device, the second control means generates a non-image silence signal having a predetermined specification to generate the signal sink. It is characterized by outputting to a device.
- the second control means requests generation of the second wireless signal including the first initialization signal from the first wireless communication apparatus.
- the fourth wireless communication means is controlled to wirelessly transmit the first initialization signal as the second wireless signal to the first wireless communication apparatus in response to the signal. .
- the second wireless communication apparatus is connected to a signal sink apparatus
- the fourth wireless communication means receives a third wireless signal including a second initialization signal from the first wireless communication device,
- the second control means converts the third wireless signal into the second initialization signal and outputs the second initialization signal to the signal sink device to execute a predetermined second initialization process. And controlling a signal sink device.
- the second control means outputs the second initialization signal to the signal sink apparatus, and then the second control means includes the first initialization signal.
- the fourth wireless communication means is controlled to wirelessly transmit a wireless signal to the first wireless communication device.
- the first signal includes an audio signal in addition to the video signal, and the video signal, the audio signal, the first initialization signal, and a transmission procedure thereof are: , It conforms to the HDMI standard.
- the video signal and the first initialization signal are And their transmission procedures are characterized in that they conform to the DVI standard.
- a wireless transmission system is the first wireless communication device that is the wireless communication device according to the first aspect, and the second wireless communication device according to the second aspect. And a wireless communication device.
- a wireless transmission system is the wireless communication device according to the third aspect of the present invention, and the second wireless communication device according to the fourth aspect of the present invention. And a wireless communication device.
- the first signal including at least the video signal from the signal source apparatus is wirelessly transmitted as the first wireless signal to the second wireless communication apparatus.
- a first wireless communication means for receiving a second wireless signal including a first initialization signal from the second wireless communication apparatus, and converting the second wireless signal into the first initialization signal.
- a first control means for controlling the signal source device to execute a predetermined first initialization process by outputting the signal source device to the signal source device. Therefore, the first signal generated by the signal source device can be wirelessly transmitted, while the first initialization signal can be wirelessly received and output to the signal source device.
- the connection can be realized without using a cable, and can be simplified as compared with the prior art. By this, it is possible to increase the degree of freedom of the installation place of the signal source device connected to the first wireless communication device.
- Second wireless communication means for wirelessly transmitting the initialization signal to the first wireless communication device as a second wireless signal, and first wireless communication for the first initialization signal as the second wireless signal
- the signal source device connected to the first wireless communication device is controlled to execute a predetermined first initialization process.
- second control means By controlling the second wireless communication means to wirelessly transmit to the device, the signal source device connected to the first wireless communication device is controlled to execute a predetermined first initialization process.
- the first initialization signal can be wirelessly received by the first wireless communication device.
- connection can be realized without using a cable and can be simplified as compared to the prior art. Thereby, the degree of freedom of the installation place of the signal sink device connected to the second wireless communication device can be increased.
- the first signal including at least the video signal from the signal source apparatus is wirelessly transmitted as the first wireless signal to the second wireless communication apparatus.
- the connection can be realized without using a cable, which can be simplified as compared with the prior art. Thereby, the degree of freedom of the installation place of the signal source device connected to the first wireless communication device can be increased.
- the third wireless communication which receives the first wireless signal including the first signal including at least the video signal from the first wireless communication apparatus , A fourth wireless communication means for wirelessly transmitting the first initialization signal as the second wireless signal to the first wireless communication apparatus, and the first initialization signal as the second wireless signal
- the fourth wireless communication means so as to wirelessly transmit to the first wireless communication device
- the first wireless communication device is connected to execute a predetermined first initialization process.
- second control means for controlling the signal source device. Accordingly, the first initialization signal can be wirelessly received by the first wireless communication device while the first signal from the first wireless communication device is received.
- the connection can be realized without using a cable, and can be simplified as compared with the prior art. Thereby, the degree of freedom of the installation place of the signal sink device connected to the second wireless communication device can be increased.
- the first wireless communication device pertaining to the first invention is provided.
- a second wireless communication apparatus according to the second invention. Therefore, by connecting the first wireless communication device to the signal source device and connecting the second wireless communication device to the signal sink device, the first signal including at least the video signal generated by the signal sink device can be obtained.
- the first initialization signal can be wirelessly transmitted to the signal source device while wirelessly transmitting to the signal sink device. That is, by connecting the signal source device and the signal sink device with a wireless transmission path, the connection can be realized without using a cable, which can be simplified as compared with the prior art. As a result, it is possible to increase the degree of freedom of the installation places of the signal source device connected to the first wireless communication device and the signal sink device connected to the second wireless communication device.
- the wireless transmission system comprises the first wireless communication device pertaining to the third aspect and the second wireless communication device pertaining to the fourth aspect. Therefore, by connecting the first wireless communication device to the signal source device and connecting the second wireless communication device to the signal sink device, the first signal including at least the video signal generated by the signal sink device can be obtained.
- the first initialization signal can be wirelessly transmitted to the signal source device while wirelessly transmitting to the signal sink device. That is, by connecting the signal source device and the signal sink device with a wireless transmission path, the connection can be realized without using a cable, which can be simplified as compared with the prior art. As a result, it is possible to increase the degree of freedom of the installation places of the signal source device connected to the first wireless communication device and the signal sink device connected to the second wireless communication device.
- FIG. 1 is a block diagram showing a configuration of a wireless transmission system including a DVD player 100, adapter devices 200 and 300, and a PDP device 400 according to a first embodiment of the present invention.
- FIG. 2 A sequence diagram showing a first operation example of the wireless transmission system of FIG.
- FIG. 3 A sequence diagram showing a second operation example of the wireless transmission system of FIG.
- FIG. 4 A sequence diagram showing a third operation example of the wireless transmission system of FIG.
- FIG. 5 is a sequence diagram showing a fourth operation example of the wireless transmission system of FIG. 1;
- FIG. 6 is a sequence diagram showing a fifth operation example of the wireless transmission system of FIG. 1;
- FIG. 7 Generated by the DVD player 100 in Figure 1 and output to the adapter device 200 5
- a graph (a) showing the V voltage signal and a graph (b) showing the 5 V pulse signal generated by the adapter device 200 of FIG. 1 and wirelessly transmitted to the adapter device 300 and by the adapter device 300 of FIG. 5C is a graph (c) showing a 5 V voltage signal output to the PDP apparatus 400.
- FIG. 8 A graph (a) showing the HPD signal generated by the PDP device 400 of FIG. 1 and outputted to the adapter device 300, and generated by the adapter device 300 of FIG. 1 and wirelessly transmitted to the adapter device 200 It is a graph (b) which shows a HPD pulse signal, and a graph (c) which shows the HPD signal which is generated by adapter device 200 of Drawing 1 and is outputted to DVD player 100.
- FIG. 9 is a block diagram showing a configuration of a wireless transmission system including a DVD player 100, adapter devices 200A and 300A, and a PDP device 400 according to a second embodiment of the present invention.
- FIG. 10 is a block diagram showing a configuration of a wireless transmission system including a DVD player 100A, adapter devices 200B and 300B, and a PDP device 400A according to a third embodiment of the present invention.
- FIG. 11 is a block diagram showing a configuration of a wireless transmission system including a DVD player 100A, adapter devices 200C and 300C, and a PDP device 400A according to a fourth embodiment of the present invention.
- FIG. 1 shows a DVD player 100 and an adapter device 200 according to a first embodiment of the present invention.
- 300 and a PDP (Plasma Display Panel) apparatus 400 are block diagrams showing a configuration of a wireless transmission system.
- the wireless transmission system of FIG. 1 transmits the video and audio signal from the DVD player 100 and the 5 V voltage signal as the second initialization signal to the PDP device 400 via the adapter devices 200 and 300 while the PDP device 400
- the HPD signal which is the first initialization signal, is transmitted to the DVD player 100 via the adapter devices 300 and 200.
- the DVD player 100 is an HDMI source device that is a signal source device that transmits and receives signals conforming to the HDMI standard, and the HDMI terminal 101 of the DVD player 100, the HDMI cable 501 of the HD player, and the HDMI of the adapter device 200. It is connected to the adapter unit 200 via the terminal 201.
- the PDP device 400 is an HDMI sink device that is a signal sink device that transmits and receives signals compliant with the HDMI standard, via the HDMI terminal 401 of the PDP device 400, the HDMI cable 502, and the HDMI terminal 301 of the adapter device 300.
- Adapter device 300 is connected. Furthermore, the adapter device 200 and the adapter device 300 are wirelessly connected via the antenna 26 of the adapter device 200 and the antenna 56 of the adapter device 300.
- the HDMI terminals 101, 201, 301, and 401 are data terminals compliant with the HDMI standard, respectively.
- the HDMI cables 501 and 502 are digital data transmission buses conforming to the HDMI standard, and include a plurality of signal lines for transmitting video and audio signals, a 5 V voltage signal line for transmitting 5 V voltage signals, And HPD signal lines for transmitting HPD signals.
- the 5 V voltage signal is defined in the HDMI standard and the DVI standard, and is a signal indicating the power supply timing to the signal source device and the signal sink device, and is generated by a signal source device such as the DVD player 100.
- the adapter unit 300 wirelessly receives the HPD pulse signal including the HPD signal and the wireless communication circuit 25 receives the HPD pulse signal and converts the HPD pulse signal into the HPD signal and outputs it to the DVD player 100. And a controller 10 for controlling the DVD player 100. Also, as described later in detail, the adapter device 300 receives a video and audio wireless signal including a video and audio signal from the adapter device 200, and transmits a HPD signal as an HPD pulse signal to the adapter device 200 by radio. By controlling the wireless communication circuit 55 to wirelessly transmit the HPD signal as an HPD pulse signal to the adapter device 200, the DVD player 100 connected to the adapter device 200 to execute a predetermined initialization process. And a controller 50 for controlling the controller.
- the DVD player 100 is configured to include a controller 110, a decoder 120, a DVD drive 130, a DVD 140, an interface 150, and an HDMI terminal 101.
- the controller 110, the decoder 120, the DVD drive 130, and the interface 150 are connected to one another through the bus 114 of the controller 110.
- a controller 110 is a controller for controlling the overall operation of the DVD player 100, and is connected to a CPU (Central Processing Unit; hereinafter referred to as a CPU and the like) connected to one another via a bus 114.
- the CPU 111 is a computer that controls the overall operation of the DVD player 100, and executes various software programs and the like.
- the ROM 113 stores in advance various kinds of software necessary for the operation of the DVD player 100 and a computer executable program of software executed by the CPU 111.
- the RAM I 12 is composed of an SRAM, a DRAM, an SDRAM, etc. and is used as a routing area of the CPU 111 to store temporary data generated at the time of program execution.
- the interface 150 is used for the input signal.
- Interface processing with the adapter device 200 to generate signals and data conforming to the HDMI standard, and output to the adapter device 200 via the HDMI connector 101, the HDMI cable 501, and the HDMI connector 201. It receives a signal input from the adapter device 200 via the HD Ml connector 201, the HDMI cable 501, and the HDMI connector 101, executes predetermined interface processing including signal conversion and protocol conversion, and outputs the interface processing to the CPU 111.
- the operation of the decoder 120 is controlled by the CPU 111.
- the decoder 120 reproduces the content stored in the DVD 140 using the DVD drive 130, generates a video and audio signal, and outputs the video and audio signal to the CPU 111.
- the CPU 111 outputs the input video and audio signal to the adapter device 200 via the interface 150, the HDMI terminal 101, the HDMI cable 501 and the HDMI terminal 201.
- the adapter device 200 includes an HDMI terminal 201, a controller 10 mutually connected via a bus 14 of the controller 10, an interface 21, a 5 V pulse signal generation circuit 22, and an HPD signal generation.
- a circuit 23 is configured to include a video / audio signal processing circuit 24 and a wireless communication circuit 25 provided with an antenna 26.
- controller 10 is a controller for controlling the overall operation of adapter device 200, and includes CPU 11 connected to each other via bus 14, RAM 12, and ROM 13. Is configured.
- the CPU 11 is a computer that controls the entire operation of the adapter device 200, and executes various software programs and the like.
- the ROM 13 preliminarily stores various software necessary for the operation of the adapter device 200 and a computer executable program of software executed by the CPU 11.
- the RAM 12 is composed of an SRAM, a DRAM, an SDRAM and the like, is used as a working area of the CPU 11 and stores temporary data generated at the time of program execution.
- the 5 V pulse signal generation circuit 22 generates a 5 V pulse signal based on the input 5 V voltage signal and outputs it to the CPU 11, as described later in detail.
- the HPD signal generation circuit 23 generates an HPD signal based on the input HPD pulse signal and outputs it to the CPU 11 as described in detail later.
- Video and audio signal processing circuit 24 A compression encoding process is performed on the input video and audio signal according to a predetermined compression encoding method, and the processed video and audio signal is output to the CPU 11.
- the interface 21 executes interface processing with the DVD player 100 to transmit signals and data conforming to the HDMI standard via the HDMI connector 201, the HDMI cable 501, and the HDMI connector 101. While outputting to player 100, it receives a signal input from DVD player 100 via HDMI connector 101, HDMI cable 501 and HDMI connector 201, and performs predetermined interface processing including signal conversion and protocol conversion. Output to CPU 11.
- radio communication circuit 25 digitally modulates the radio carrier wave into a video and audio radio signal using a predetermined digital modulation method according to the input video and audio signal, and then, transmits the video and audio radio signal. High-frequency signal processing such as high-frequency conversion and high-frequency amplification is performed on the signal, and the processed audio-video radio signal is wirelessly transmitted to the adapter device 300 via the antenna 26. Also, the radio communication circuit 25 digitally modulates the radio carrier wave into a radio signal using a predetermined digital modulation scheme in accordance with the input 5 V pulse signal, the ACK signal to be described in detail later and an HPD pulse signal generation request signal.
- the wireless communication circuit 25 performs high frequency signal processing such as low frequency conversion and high frequency amplification on the wireless signal received by the antenna 26 and performs baseband processing on the processed wireless signal using a predetermined digital demodulation method. After demodulation into a clock signal, the baseband signal is converted to an HPD pulse signal or an ACK signal and output to the CPU 11. As a result, the wireless communication circuit 25 wirelessly transmits the input video / audio signal, 5 V pulse signal, ACK signal and HPD pulse signal generation request signal to the adapter device 300 while the HPD pulse signal from the adapter device 300 and Receive an ACK signal wirelessly.
- the adapter device 300 includes an HDMI terminal 301, a controller 50 connected to each other via a bus 54 of the controller 50, an interface 57, a 5 V voltage signal generation circuit 72, and an HPD pulse signal generation.
- a circuit 73, a video / audio signal processing circuit 74, a non-image silent signal generating circuit 75, and a wireless communication circuit 55 including an antenna 56 are configured.
- controller 50 is a controller for controlling the overall operation of adapter device 300, and is configured to include CPU 51, RAM 52, and ROM 53 connected to each other via bus 54. Be done.
- the CPU 51 is a computer that controls the overall operation of the adapter device 300, and executes various software programs and the like.
- the ROM 53 preliminarily stores various software necessary for the operation of the adapter device 300 and a computer-executable program of software executed by the CPU 51.
- the RAM 52 is composed of SRAM, DRAM, SDRAM and the like, is used as a working area of the CPU 51, and stores temporary data generated at the time of program execution.
- the 5V voltage signal generation circuit 72 generates a 5V voltage signal based on the input 5V pulse signal and outputs it to the CPU 51, as described in detail later.
- the HPD pulse signal generation circuit 73 generates an HPD pulse signal based on the input HPD signal and outputs it to the CPU 51, as described in detail later.
- the video and audio signal processing circuit 74 performs a decoding process on the input video and audio signal according to a predetermined decoding method, and outputs the processed video and audio signal to the CPU 51.
- the silence silence signal generation circuit 75 generates a silence silence signal including a black image signal and a silence signal having a predetermined specification and outputs the silence signal to the CPU 51.
- the black image signal is a video signal in which the value of the luminance signal is 10h (hexadecimal) and the value of the color difference signal is 80h (hexadecimal), and the silent signal has a volume value of 00h (hexadecimal) Is an audio signal.
- the interface 57 executes interface processing with the PDP device 400 to transmit signals and data conforming to the HDMI standard to the HDMI connector 301, the HDMI cable 502, and the HDMI connector 401.
- the signal is output to the PDP device 400 via the interface, while the signal input from the PDP device 400 via the HDMI connector 401, the HDMI cable 502, and the HDMI connector 301 is received, and predetermined interface processing including signal conversion and protocol conversion is performed. Output to the CPU 51.
- wireless communication circuit 55 digitally modulates a wireless carrier wave into a wireless signal using a predetermined digital modulation scheme in accordance with the input HPD pulse signal and an ACK signal described later in detail.
- High frequency conversion and high for radio signals High frequency signal processing such as frequency amplification is performed, and the processed wireless signal is wirelessly transmitted to the adapter device 200 via the antenna 56.
- the wireless communication circuit 55 performs high frequency signal processing such as low-pass frequency conversion and high frequency amplification on the video and audio wireless signal received by the antenna 56, and performs predetermined digital demodulation of the processed video and audio wireless signal. After demodulation to a baseband signal using the method, the baseband signal is converted to a video and audio signal and output to the CPU 51.
- the wireless communication circuit 55 performs high frequency signal processing such as low frequency conversion and high frequency amplification on the wireless signal received by the antenna 56, and base the processed wireless signal using a predetermined digital demodulation method. After demodulation into a band signal, the baseband signal is converted into a 5 V pulse signal, an HPD pulse signal generation request signal or an ACK signal, and is output to the CPU 51. As a result, the wireless communication circuit 55 wirelessly transmits the input HPD pulse signal and ACK signal to the adapter device 200, while the video / audio signal from the adapter device 200, 5 V pulse signal, ACK signal and HPD pulse signal are emitted. Wirelessly receive the raw request signal.
- the PDP device 400 includes an HDMI terminal 401, a controller 410, an interface 450, a video signal processing circuit 451, a display 452, an audio signal processing circuit 453, and a speaker 454. It comprises and is constituted.
- the controller 410, the interface 450, the video signal processing circuit 451, and the audio signal processing circuit 453 are connected to one another through the bus 415 of the controller 410.
- a controller 410 is a controller for controlling the entire operation of the PDP device 400, and includes a CPU 411, an RAM 412, and a ROM 413 connected to one another via a bus 415.
- the CPU 411 is a computer that controls the overall operation of the PDP apparatus 400, and executes various software programs and the like.
- the ROM 413 stores various software necessary for the operation of the PDP device 400 and programs executable by the computer of software executed by the CPU 411 in advance.
- Product information of the PDP device 400 manufacturer's name, video Code system (for example, RGB system, YC C 4: 4: 4 system or YC C 4: 2: 2 system), resolution, field frequency, number of scanning lines
- EDID Extended Display Identification Data
- the RAM 412 is composed of SRAM, DRAM, SDRAM and the like, is used as a working area of the CPU 411 and stores temporary data generated at the time of program execution.
- the interface 450 in the PDP apparatus 400 performs interface processing with the adapter apparatus 300 to transmit signals and data conforming to the HDMI standard to the HDMI connector 401, the HDMI cable 502, and the HDMI connector.
- a predetermined signal output from the adapter device 300 via the HDMI connector 301, the HDMI cable 502, and the HDM I connector 501 is received from the adapter device 300 via the 301 and includes signal conversion and protocol conversion. Execute interface processing and output to CPU 411.
- the video signal processing circuit 451 converts an input video signal into a video display signal having a predetermined specification, and outputs the video display signal to the display 452 for display.
- the audio signal processing circuit 453 performs DZA conversion and amplification on the input audio signal, and outputs it to the speaker 454.
- FIG. 2 is a sequence diagram showing a first operation example of the wireless transmission system of FIG.
- the CPU 111 of the DVD player 100 detects that the adapter device 200 in the power-on state is connected to the DVD player 100 in the power-on state
- the cable 501 5 V voltage signal line is detected.
- the 5V voltage signal is generated by changing the voltage level of 0V from 0V to 5V, and is output to the CPU 11 of the adapter device 200.
- the CPU 11 of the adapter device 200 outputs the input 5 V voltage signal to the 5 V pulse signal generating circuit 22, and the 5 V pulse signal generating circuit 22 rises at the rising edge timing of the 5 V voltage signal.
- a 5 V pulse signal having a predetermined pulse width is generated and controlled to be output to the CPU 11. Further, the CPU 11 wirelessly transmits the 5 V pulse signal from the 5 V pulse signal generation circuit 22 to the CPU 51 of the adapter device 300 via the antennas 26 and 56. If the CPU 51 of the adapter device 300 receives the 5V pulse signal normally, it outputs the received 5V pulse signal to the 5V voltage signal generator circuit 72, and the 5V voltage signal generator circuit 72 is the rising edge of the 5V pulse signal. It controls to generate 5V voltage signal which changes from 0V to 5V at the timing of and output to CPU51. Furthermore, the CPU 51 controls the voltage level of the 5V voltage signal line of the HDMI cable 502 by the 5V voltage signal from the 5V voltage signal generation circuit 72.
- the CPU 411 outputs the 5 V voltage signal to the CPU 411 of the PDP device 400 by changing the voltage based on the above. Thereafter, the CPU 51 generates an ACK signal indicating that the 5 V pulse signal has been received normally, and wirelessly transmits it to the CPU 11 of the adapter device 200 via the antenna 56 and the antenna 26, and the CPU 11 of the adapter device 200 transmits the ACK signal. When the signal is received, it is determined that the 5 V pulse signal has been successfully transmitted to the CPU 51 of the adapter device 300. On the other hand, when receiving the 5 V voltage signal, the CPU 411 of the PDP device 400 executes a predetermined initialization process conforming to the HDMI standard, such as a process of reading EDID from the EDID memory 414.
- FIG. 7 is a graph (a) showing a 5 V voltage signal generated by the DVD player 100 of FIG. 1 and output to the adapter device 200, and an adapter device 300 generated by the adapter device 200 of FIG. And a graph (c) showing a 5 V voltage signal generated by the adapter device 300 of FIG. 1 and outputted to the PDP device 400.
- the 5 V voltage signal generated by the CPU 111 of the DVD player 100 is output to the CPU 11 of the adapter device 200 via the HDMI cable 501, and a 5 V pulse signal generating circuit is generated based on the 5 V voltage signal.
- the 5 V pulse signal generated by the signal generator 22 is wirelessly transmitted to the CPU 51 of the adapter device 300.
- the 5V voltage signal generated by the 5V voltage signal generation circuit 72 based on the 5V pulse signal is output to the CPU 411 of the PDP device 400 via the HD Ml cable 502.
- the CPU 411 of the PDP device 400 can execute predetermined initialization processing.
- the voltage level of the HPD signal line of the HDMI cable 501 cable 502 is changed from the no level to the low level for a predetermined time of 100 ms or more. By changing only for time, an HPD signal is generated and output to the CPU 51 of the adapter device 300.
- the HPD pulse signal generation circuit 73 receives a low level HPD signal.
- the CPU 51 wirelessly transmits the HPD pulse signal from the HPD pulse signal generation circuit 73 to the CPU 11 of the adapter device 200 via the antennas 56 and 26.
- the CPU 11 of the adapter device 200 When the HPD pulse signal is properly received, the received HPD pulse signal is output to the HPD signal generation circuit 23, and the HPD signal generation circuit 23 changes from high level to low level at the timing of the rising edge of the HPD pulse signal. It changes and after 100 mm or more passes, it controls to generate an HPD signal that returns to the level and to output to the CPU 11.
- the CPU 11 outputs an HPD signal to the CPU 111 of the DVD player 100 by changing the voltage level of the HPD signal line of the HDMI cable 501 based on the HPD signal from the HPD signal generation circuit 23. Thereafter, the CPU 11 generates an ACK signal indicating that the HPD pulse signal has been received normally, and wirelessly transmits it to the CPU 51 of the adapter device 300 via the antenna 26 and the antenna 56, and the CPU 51 of the adapter device 300 When the ACK signal is received, it is determined that the HPD pulse signal has been successfully transmitted to the CPU 11 of the adapter device 200. On the other hand, when the HPD signal is received, the CPU 111 of the DVD player 100 executes a predetermined initialization process conforming to the HDMI standard.
- FIG. 8 is a graph (a) showing the HPD signal generated by the PDP device 400 of FIG. 1 and output to the adapter device 300, and is generated by the adapter device 300 of FIG. 1 to the adapter device 200. It is a graph (b) which shows the HPD pulse signal transmitted by radio
- the HPD signal generated by the CPU 411 of the PDP device 400 is output to the CPU 51 of the adapter device 300 via the HDMI cable 502, and is generated by the HPD pulse signal generation circuit 73 based on the HP D signal.
- the HPD pulse signal thus transmitted is wirelessly transmitted to the CPU 11 of the adapter device 200. Further, the HPD signal generated by the HPD signal generation circuit 23 based on the HPD pulse signal is output to the CPU 111 of the DVD player 100 via the HDMI cable 501. In response to this, the CPU 111 of the DVD player 100 can execute predetermined initialization processing compliant with the HDMI standard.
- the CPU 111 of the DVD player 100 when the CPU 111 of the DVD player 100 finishes the initialization processing, it reproduces the content stored in the DVD 140, generates a video and audio signal, and outputs it to the CPU 111.
- Control 120 In response to this, the decoder 120 reproduces the content stored in the DVD 140 using the DVD drive 130 to generate an audiovisual signal, Output to the CPU 111.
- the CPU 111 outputs the input video and audio signal to the CPU 11 of the adapter device 200.
- the CPU 11 of the adapter device 200 outputs the input video and audio signal to the video and audio signal processing circuit 24, and the video and audio signal processing circuit 24 performs predetermined compression coding on the video and audio signal.
- the compression encoding process is performed by the method, and the video and audio signal after the process is controlled to be output to the CPU 11. Further, the CPU 11 wirelessly transmits the processed video and audio signal to the CPU 51 of the adapter device 300 via the antennas 26 and 56 as a video and audio wireless signal. In response to this, the CPU 51 of the adapter device 300 outputs the received video and audio signal to the video and audio signal processing circuit 74, and the video and audio signal processing circuit 74 performs predetermined decoding on the video and audio signal. Decoding processing is performed by the method, and control is made to output the processed video and audio signal to the CPU 51.
- the CPU 51 calculates a packet error rate (hereinafter referred to as PER) of the video / audio signal after processing, and determines that the video / audio signal has been received normally if the PER is less than a predetermined value. And outputs the processed video and audio signal to the CPU 411 of the PDP device 400. Thereafter, the CPU 51 generates an ACK signal indicating that the video and audio signal has been normally received, and wirelessly transmits the signal to the CPU 11 of the adapter device 200. When the CPU 11 of the adapter device 200 receives the ACK signal, It is determined that the video and audio signal has been successfully transmitted to the CPU 51 of the adapter device 300.
- PER packet error rate
- the CPU 411 of the PDP device 400 generates a video signal and an audio signal based on the input video and audio signal, and outputs the video signal to the display 452 via the video signal processing circuit 451 for display.
- the signal is output to the speaker 454 via the audio signal processing circuit 453.
- FIG. 3 is a sequence diagram showing a second operation example of the wireless transmission system of FIG.
- the CPU 111 of the DVD player 100 detects that the adapter device 200 in the power-on state is connected to the DVD player 100 in the power-on state, as in FIG.
- a signal is generated and output to the CPU 11 of the adapter device 200.
- the CPU 11 of the adapter device 200 generates a 5 V pulse signal and wirelessly transmits it to the CPU 51 of the adapter device 300 via the antennas 26 and 56 as in FIG.
- the CPU 11 of the adapter device 200 waits for a predetermined waiting time T1, and the CPU 51 of the adapter device 300 performs AC until the end of the standby If it does not receive the K signal, it determines that a communication error has occurred between the adapter device 200 and the adapter device 300, generates an HPD pulse signal generation request signal, and wirelessly transmits it to the CPU 51 of the adapter device 300. . In response to this, the CPU 51 of the adapter device 300 controls the HPD pulse signal generation circuit 73 to generate an HPD pulse signal having a predetermined pulse width and output it to the CPU 51.
- the CPU 51 wirelessly transmits the HPD pulse signal of the HPD pulse signal generation circuit 73 to the CPU 11 of the adapter device 200 via the antennas 56 and 26.
- the CPU 11 of the adapter device 200 When the HPD pulse signal is received normally, the CPU 11 of the adapter device 200 generates an HPD signal as in FIG. 2 and outputs the HPD signal to the CPU 111 of the DVD player 100. Thereafter, the CPU 11 generates an ACK signal indicating that the HPD pulse signal has been received normally, and wirelessly transmits it to the CPU 51 of the adapter device 300 via the antenna 26 and the antenna 56, and the CPU 51 of the adapter device 300 When the ACK signal is received, it is determined that the HPD pulse signal has been successfully transmitted to the CPU 11 of the adapter device 200.
- the CPU 111 of the DVD player 100 executes predetermined initialization processing conforming to the HDMI standard, and after completion of the initialization processing, generates a 5 V voltage signal again to generate an adapter device. Output to the CPU 11 of 200.
- the CPU 51 of the adapter device 300 may generate a 5 V voltage signal and output it to the CPU 411 of the PDP device 400.
- the waiting time T1 is the adapter device when the 5 V pulse signal is transmitted normally. It is set to a time longer than the time required to receive an ACK signal from the CPU 51 of 300.
- the HPD pulse signal is transmitted normally. It is set to a time longer than the time required to receive an ACK signal from the CPU 11 of 200.
- FIG. 5 is a sequence diagram showing a fourth operation example of the wireless transmission system of FIG.
- the CPU 111 of the DVD player 100 generates a video and audio signal and outputs it to the CPU 11 of the adapter device 200 as in FIG.
- the CPU 11 of the adapter device 200 wirelessly transmits the input video and audio signal as the video and audio wireless signal to the CPU 51 of the adapter device 300 via the antennas 26 and 56.
- the CPU 11 of the adapter device 200 waits for a predetermined waiting time T3 and does not receive an ACK signal from the CPU 51 of the adapter device 300 by the end of the standby.
- the CPU 11 determines that the HPD pulse signal is normally transmitted to the CPU 11 of the adapter device 200.
- the CPU 111 of the DVD player 100 executes a predetermined initialization process conforming to the HDMI standard, and after completion of the initialization process, generates a video and audio signal again to the CPU 11 of the adapter device 200. Output.
- the standby time T3 is when the video / audio wireless signal is transmitted normally after the CPU 11 of the adapter device 200 wirelessly transmits the video / audio wireless signal to the CPU 51 of the adapter device 300. It is set to a time longer than a time required to receive an ACK signal from the CPU 51 of the adapter device 300.
- the processed video and audio signal is output to the CPU 411 of the PDP device 400. Thereafter, the CPU 51 generates an ACK signal indicating that the video and audio signal has been normally received, wirelessly transmits it to the CPU 11 of the adapter device 200, and the CP Ul l of the adapter device 200 receives the ACK signal, It is determined that the video and audio signal has been successfully transmitted to the CPU 51 of the adapter device 300.
- the CPU 411 of the PDP device 400 generates a video signal and an audio signal based on the input video and audio signal, and outputs the video signal to the display 72 through the video signal processing circuit 71 as in FIG. While displaying, an audio signal is output to a speaker 454 via an audio signal processing circuit 453.
- the CPU 51 of the adapter device 300 controls the non-image silence signal generation circuit 75 so as to generate a non-image silence signal including a black image signal having a predetermined specification and a silence signal and output it to the CPU 51
- the CUP 411 of the PDP device 400 outputs a no image silence signal to be output.
- the CPU 411 of the PDP device 400 generates a black image signal and a silence signal based on the input non-image silent signal, and displays the black image signal via the video signal processing circuit 71. , And outputs a silence signal to the speaker 454 via the audio signal processing circuit 453.
- the HPD pulse signal generation circuit 73 generates an HPD pulse signal having a predetermined pulse width. Then, the CPU 51 controls to output to the CPU 51, and wirelessly transmits the input HP D pulse signal to the CPU 11 of the adapter device 200 via the antennas 56 and 26. In response to this, when the HPD pulse signal is received normally, the CPU 11 of the adapter device 200 generates an HPD signal based on the received HPD pulse signal and outputs it to the CPU 111 of the DVD player 100.
- the CPU 111 of the DVD player 100 generates an audio / video signal and outputs it to the CPU 11 of the adapter device 200 as in FIG. 2 after the end of the initialization process.
- the CPU 11 of the adapter device 200 wirelessly transmits the input video and audio signal as the video and audio wireless signal to the CPU 51 of the adapter device 300 via the antennas 26 and 56 as in FIG.
- the CPU 51 of the adapter device 300 performs a decoding process on the received video and audio signal according to a predetermined decoding system as in FIG. 2, and performs PER on the processed video and audio signal.
- the no image silence signal generation circuit 75 Control to stop the generation of the non-image silent signal generation request signal and output it to the CPU 411 of the PDP apparatus 400.
- the CPU 411 of the PDP device 400 stops the generation of the black image signal and the silence signal and the output to the display 452 and the speaker 454.
- the CPU 51 of the adapter device 300 generates an ACK signal indicating that the video and audio signal has been normally received, and outputs the processed video and audio signal to the CPU 411 of the PDP device 400.
- the CPU 11 of the adapter device 200 determines that the video and audio signal has been successfully transmitted to the CPU 51 of the adapter device 300.
- the CPU 411 of the PDP device 400 generates a video signal and an audio signal based on the input video and audio signal as in FIG. 2 and generates the video signal via the video signal processing circuit 71. , And outputs an audio signal to the speaker 454 via the audio signal processing circuit 453.
- the standby time T4 is longer than the time normally required for the CPU 51 of the adapter device 300 to normally receive the video and audio radio signal and then to receive the next video and audio radio signal. Set to time.
- the wireless signal including the 5 V voltage signal and the video and audio signal generated by the CPU 111 of the DVD player 100 is transmitted to the adapter device 300 wirelessly. While transmitting, it can receive a wireless signal including an HPD signal from the adapter device 300. Further, according to the adapter device 300 according to the present embodiment, while receiving a wireless signal including the 5 V voltage signal and the video and audio signal from the adapter device 200, the wireless signal including the HPD signal is wirelessly transmitted to the adapter device 200. it can.
- the 5 V voltage signal and the video and audio signal generated by the CPU 111 of the DVD player 100 are wirelessly transmitted to the PDP device 400 via the adapter device 200 and the adapter device 300 while the HPD signal generated by the CPU 411 of the PDP device 400 is It can be wirelessly transmitted to the DVD player 100 via the adapter device 300 and the adapter device 200. That is, by connecting the DVD player 100 and the PDP device 400 by a wireless transmission path, the connection can be realized without using the HD Ml cable, which can be simplified as compared with the prior art. By this, it is possible to increase the flexibility of the installation place of the DVD player 100 connected to the adapter device 200 and the PDP device 400 connected to the adapter device 300.
- an HP D pulse signal generation request is generated.
- a signal is generated and wirelessly transmitted to the CPU 51 of the adapter device 300 to receive an HPD pulse signal from the adapter device 300, generate an HPD signal based on the received HPD pulse signal, and output it to the DVD player 100.
- the CPU 51 of the adapter device 300 detects an abnormality in communication between the adapter device 200 and the adapter device 300, the CPU 51 generates an HPD pulse signal and wirelessly transmits the HPD pulse signal to the adapter device 200. Control to generate an HPD signal and output it to the DVD player 100.
- the DVD player 100 receives an HPD signal from the adapter device 200, and in response to this, executes a predetermined initialization process.
- the DVD player 100 and the PDP device 400 can reliably transmit the video / audio signal, the 5 V voltage signal and the HPD signal through the adapter devices 200 and 300.
- the signal sink device needs to generate an HPD signal after receiving a 5 V voltage signal and output it to the signal source device.
- the CPU 51 of the adapter device 300 generates a 5 V voltage signal and outputs it to the CPU 411 of the PDP device 400, and thereafter based on the HPD signal from the CPU 411 of the PDP device 400! Since the HPD pulse signal is generated and wirelessly transmitted to the CPU 11 of the adapter device 200, the processing of the CPU 11 of the adapter device 200 generating the HPD signal and outputting it to the CPU 111 of the DVD player 100 is the adapter device 300. Is executed after the CPU 51 generates a 5V voltage signal and outputs it to the CPU 411 of the PDP device 400, and can transmit the 5V voltage signal and the HPD signal by a transmission procedure compliant with the HDMI standard and DVI standard.
- the CPU 11 of the adapter device 200 wirelessly transmits a 5V pulse signal to the CPU 51 of the adapter device 300, and then waits for a predetermined waiting time T1, and the adapter device 300 waits until the end of the waiting. If an ACK signal is not received from the CPU 51 of the host computer, it is determined that a communication error has occurred between the adapter device 200 and the adapter device 300, and the video and audio radio signal is wirelessly transmitted to the CPU 51 of the adapter device 300. Wait time for only T3 In the case of waiting, and not receiving an ACK signal from the CPU 51 of the adapter device 300 by the end of the waiting, it is determined that a communication error has occurred between the adapter device 200 and the adapter device 300.
- the CPU 51 of the adapter device 300 wirelessly transmits the HPD pulse signal to the CPU 11 of the adapter device 200, it waits for a predetermined waiting time T2, and does not receive an ACK signal from the CPU 11 of the adapter device 200 by the end of the waiting time. In the case, it was determined that a communication error occurred between the adapter device 200 and the adapter device 300.
- the present invention is not limited to this, and in the case of detecting a packet loss equal to or more than a predetermined threshold value, or when receiving a retransmission request from the other device a predetermined number of times or more, the adapter device 200 and the adapter It may be determined that a communication error has occurred with the device 300, and the adapter device 300 may be controlled to generate an HPD pulse signal and wirelessly transmit it to the adapter device 200.
- the CPU 51 of the adapter device 300 determines whether or not the power of properly receiving the video and audio signal is determined based on the PER of the received video and audio signal.
- the present invention is not limited to this, and based on the packet loss rate related to the received video and audio signal, it may be determined whether or not the power for properly receiving the video and audio signal is received.
- the video and audio radio signal, the 5 V voltage signal, or the other radio signal is properly received, the video and audio radio signal, the 5 V voltage signal, or the other radio signal is normally received until the predetermined time passes.
- the silent image noiseless signal generation circuit 75 may be controlled to generate a silent frequency signal and output it to the CPU 51, and the inputted silent image noise signal may be outputted to the CPU 411 of the PDP device 400.
- the adapter device 300 when the adapter device 300 detects a communication abnormality between the adapter device 200 and the adapter device 300, it generates a no-image silence signal and outputs the DPP device 400.
- the present invention is not limited to this, and a black image signal may be generated and output to the PDP device 400, and an audio signal may not be output to the PDP device 400.
- the CPU 51 of the adapter device 300 after receiving the 5V pulse signal, the CPU 51 of the adapter device 300 generates a 5V voltage signal based on the received 5V pulse signal and outputs it to the CPU 51.
- Control the 5V voltage signal generation circuit 72 to output the 5V voltage signal from the 5V voltage signal generation circuit 72 to the CPU 411 of the PDP device 400.
- the 5 V voltage signal generation circuit 72 or another means is controlled to generate a 5 V voltage signal and output it to the CPU 51 when it is detected that the PDP device 400 is connected, or the 5 V voltage signal generation circuit 72 or Another 5V voltage signal may be output to the CPU 411 of the PDP device 400.
- the CPU 11 of the adapter device 200 when the HPD pulse signal is normally received, the CPU 11 of the adapter device 200 generates an ACK signal and wirelessly transmits it to the CPU 51 of the adapter device 300, but the present invention Not limited to, it may be configured as follows.
- the signal source device generates 64-bit data and outputs it to the signal sink device when the HDP signal is properly received. Therefore, the CPU 111 of the DVD player 100 that has successfully received the HPD signal generates 64-bit data and outputs it to the CPU 11 of the adapter unit 200, and the CPU 11 of the adapter unit 200 outputs the 64-bit data input to the adapter unit 300.
- the CPU 11 of the adapter unit 200 When wirelessly transmitted to the CPU 51 and the CPU 51 of the adapter device 300 receives 64-bit data, it may be determined that the HPD pulse signal has been successfully transmitted.
- the 5V pulse signal generation circuit 22 generates a 5V pulse signal based on the 5V voltage signal, but the present invention is not limited to this, and a 5V flag signal may be generated.
- the HPD pulse generator 73 generates the HPD pulse signal based on the HPD signal. The present invention is not limited to this, and the HPD flag signal may be generated.
- the 5V pulse signal and the HPD pulse signal are respectively active signals at high and low levels. The present invention is not limited to this, and may be active signals at low level.
- the CPU 51 of the adapter device 300 detects that the voltage level of the HPD signal line of the HDMI cable 502 is low for a time period of 100 milliseconds or more, an HPD pulse signal is detected.
- the generation circuit 73 controls to generate the HPD pulse signal and output it to the CPU 51.
- the voltage level of the HPD signal line of the HDMI cable 502 changes to low level.
- the HPD pulse signal generation circuit 73 controls to generate an HP D pulse signal and output it to the CPU 51 when it is detected. If it is detected that the voltage level of the PD signal line is low for a period of 100 milliseconds or more, the HPD pulse signal may be wirelessly transmitted to the adapter device 200.
- the adapter device 200 wirelessly transmits the HPD pulse signal generation request signal to the adapter device 300 in the above embodiment, the present invention is not limited to this, and it is also possible to transmit by wire. Good.
- the CPU 11 of the adapter device 200 may execute the initialization process of the adapter device 200 when receiving the HPD pulse signal. Further, in FIG. 2, after the CPU 51 of the adapter device 300 receives the 5 V pulse signal normally, it generates an ACK signal, wirelessly transmits it to the CPU 11 of the adapter device 200, and then generates a 5 V voltage signal. It may be output to the CPU 411 of the PDP device 400. Alternatively, after the CPU 51 of the adapter device 300 receives the 5 V pulse signal normally, it generates an ACK signal and wirelessly transmits it to the CPU 11 of the adapter device 200, and simultaneously generates the 5 V voltage signal to generate the CPU 411 of the PDP device 400. It may be output to Furthermore, in FIG.
- the CPU 51 of the adapter device 300 after the CPU 51 of the adapter device 300 receives the video and audio signal normally, the CPU 51 generates an ACK signal and wirelessly transmits it to the CPU 11 of the adapter device 200.
- the video and audio signal may be output to the CPU 411 of the PDP device 400.
- the CPU 51 after the CPU 51 of the adapter device 300 receives the video and audio signal normally, the CPU 51 generates an ACK signal and wirelessly transmits the signal to the CPU 11 of the adapter device 200 and simultaneously outputs the processed video and audio signal to the CPU 411 of the PDP device 400. You may. Furthermore, in FIGS.
- the CPU 11 of the adapter device 200 after the HPD pulse signal is properly received, the CPU 11 of the adapter device 200 generates an ACK signal and wirelessly transmits it to the CPU 51 of the adapter device 300, and then the HPD A signal may be generated and output to the CPU 111 of the DVD player 100.
- the CPU 11 of the adapter device 200 receives the HPD pulse signal normally, it generates an ACK signal and wirelessly transmits it to the CPU 51 of the adapter device 300 and simultaneously generates an HPD signal and outputs it to the CPU 111 of the DVD player 100.
- FIG. 9 is a block diagram showing a configuration of a wireless transmission system including a DVD player 100, adapter devices 200A and 300A, and a PDP device 400 according to a second embodiment of the present invention.
- the wireless transmission system according to the second embodiment is a wireless transmission according to the first embodiment.
- the adapter devices 200A and 300A are replaced by adapter devices 200A and 300A.
- the adapter device 200A includes the wireless communication circuit 25A instead of the wireless communication circuit 25 and further includes the wireless communication circuit 27 and the antenna 28.
- the wireless communication circuit 55A is provided with a wireless communication circuit 57 and an antenna 58.
- the wireless transmission system according to the second embodiment is different from the wireless transmission system according to the first embodiment in the frequency of the wireless channel for transmitting the video signal between the adapter device 200A and the adapter device 300A.
- the frequency and the frequency of the radio channel for transmitting the voice signal, the 5 V pulse signal, the HPD pulse signal, the ACK signal, and the HPD pulse generation request signal are different from one another. The differences from the first embodiment will be described in detail below.
- CPU 11 outputs the video signal included in the video and audio signal from video and audio signal processing circuit 24 to wireless communication circuit 25 A, while being included in the video and audio signal from video and audio signal processing circuit 24.
- the voice signal, the 5 V pulse signal generation circuit 22 5 V pulse signal, the ACK signal and the HPD pulse signal generation request signal are output to the wireless communication circuit 27.
- wireless communication circuit 25 A digitally modulates the wireless carrier wave into a video wireless signal using a predetermined digital modulation scheme according to the input video signal, and then transmits a video wireless signal. High frequency conversion and high frequency amplification and other high frequency signal processing are performed, and the processed video wireless signal is wirelessly transmitted to the adapter device 300 A via the antenna 26. Further, the wireless communication circuit 27 digitally modulates the wireless carrier wave into a wireless signal using a predetermined digital modulation scheme in accordance with the input voice signal, 5 V pulse signal, ACK signal and HPD pulse signal generation request signal, High frequency signal processing such as high frequency conversion is executed, and the processed wireless signal is wirelessly transmitted to the adapter device 300A through the antenna 26 using the first wireless channel.
- the wireless communication circuit 27 performs high-frequency signal processing such as low-pass frequency conversion and high-frequency amplification on the wireless signal received by the antenna 28, and performs baseband processing using the predetermined digital demodulation method on the processed wireless signal.
- the baseband signal is an HPD pulse signal Or convert it into an ACK signal and output it to the CPU 11;
- wireless communication circuit 55 A performs high-frequency signal processing such as low-pass frequency conversion and high-frequency amplification on the video wireless signal received by antenna 56, and the processed video After the wireless signal is demodulated to a baseband signal using a predetermined digital demodulation method, the baseband signal is converted to a video signal and output to the CPU 51.
- the CPU 51 outputs the HPD pulse signal and the ACK signal from the HPD pulse signal generation circuit 73 to the wireless communication circuit 57.
- the wireless communication circuit 57 digitally modulates the wireless carrier into a wireless signal using a predetermined digital modulation scheme according to the HPD pulse signal and the ACK signal input, and then performs high frequency conversion and high frequency amplification on the wireless signal. High-frequency signal processing, and wirelessly transmit the processed wireless signal to the adapter device 200A via the antenna 58 using a second wireless channel having a frequency different from that of the first wireless channel.
- the wireless transmission system according to the second embodiment has the same effect as the wireless transmission system according to the first embodiment. Also, while the video wireless signal is wirelessly transmitted via the antennas 26 and 56 using the first wireless channel, the audio signal, 5 V pulse signal, HPD pulse signal, ACK signal, and HPD pulse generation request signal are respectively transmitted. Since the wireless signal including is wirelessly transmitted via the antennas 28 and 58 using the second wireless channel, compared to the wireless transmission system according to the first embodiment, the imaging via the antennas 26 and 56 is performed. The image wireless signal can be wirelessly transmitted with a larger transmission capacity.
- the CPU 11 of the adapter device 200A wirelessly transmits the video signal to the adapter device 300A through the antennas 26 and 56, and the audio device through the antennas 28 and 58.
- the present invention is not limited to this, and the video and audio signal may be wirelessly transmitted to the adapter device 300A via the antennas 26 and 56.
- CPU 51 of adapter device 200A is similar to adapter device 200A.
- FIG. 10 is a block diagram showing a configuration of a wireless transmission system including a DVD player 100A, adapter devices 2 OOB and 300B, and a PDP device 400A according to a third embodiment of the present invention.
- the wireless transmission system of FIG. 10 wirelessly transmits the video signal and the 5 V voltage signal from the DVD player 100A to the PDP device 400A via the adapter devices 200B and 300B, while the HPD signal from the PDP device 400A is adapter device 300B. And 200B for wireless transmission to the DVD player 100A.
- the wireless transmission system according to the third embodiment is a DVI source device that is a signal source device that transmits and receives signals conforming to the DV I standard as compared with the wireless transmission system according to the first embodiment.
- a D-player 100A and a DVI sink source device that is a signal sink device that transmits and receives signals compliant with the DVI standard. The differences from the first embodiment will be described in detail below.
- the DVD player 100A is a known DVI source device, and is connected to the adapter device 200B through the DVI terminal 101A of the DVD player 100A, the DVI cable 501A, and the DVI terminal 201A of the adapter device 200B.
- the PDP device 400A is a known DVI sink device, and is connected to the adapter device 300B via the DVI terminal 401A of the PDP device 400A, the DVI cable 502A, and the DVI terminal 301A of the adapter device 30OB.
- the adapter device 200 B and the adapter device 300 B are wirelessly connected via the antenna 26 of the adapter device 200 B and the antenna 56 of the adapter device 300 B.
- Each of the DVI terminals 101A, 201A, 301A, and 401A is a data terminal conforming to the DVI standard.
- the DVI cables 5018 and 50228 are digital data transmission buses conforming to the DVI standard, respectively, and a plurality of signal lines for transmitting video signals, a 5 V voltage signal line for transmitting 5 V voltage signals, and an HPD Includes HPD signal lines for transmitting signals.
- DVD player 100A has interface 150A in place of interface 150, and DVI terminal 101A in place of HDMI terminal 101, as compared with DVD player 100 in FIG.
- the circuit 121 and the speaker 102 are further provided.
- the interface 150A performs interface processing with the adapter device 200B on the input signal to generate a signal or data conforming to the DVI standard, and the DVI connector 101A, DVI is generated.
- the signal is output to the adapter device 200B through the cable 501A and the DVI connector 201A, and the signal input from the adapter device 200B through the DVI connector 201A, the DVI cable 501A and the DVI connector 101A is received, and signal conversion or protocol is performed. It executes predetermined interface processing including conversion and outputs it to the CPU 111.
- the audio signal processing circuit 121 performs DZA conversion and amplification on the input audio signal, and outputs it to the speaker 102.
- the CPU 111 outputs the video signal included in the video and audio signal from the decoder 120 to the adapter device 200B, while the audio signal and the voice signal and the PDP device 400A's device play 452 After performing predetermined delay processing for synchronizing with the video signal output from the video signal, the processed audio signal is output to the speaker 102 via the audio signal processing circuit 121.
- adapter device 200B differs from adapter device 200B in FIG. 1 in that DVI terminal 201A is replaced with HD Ml terminal 201, interface 21, video and audio signal processing circuit 24, and wireless communication circuit 25. , Interface 21 A, video signal processing circuit 24 A, and wireless communication circuit 25 B.
- the interface 21A executes interface processing with the DVD player 100A to transmit signals and data conforming to the DVI standard via the DVI connector 201A, the DVI cable 501A, and the DVI connector 101A. While outputting to the DVD player 100A, it receives a signal input from the DVD player 100A through the DVI connector 101A, the DVI cable 501A and the DVI connector 201A, and performs predetermined interface processing including signal conversion and protocol conversion. Execute and output to CPU 11.
- the video signal processing circuit 24A detects the position of the input video signal. The compression encoding process is performed according to a predetermined compression encoding method, and the processed video signal is output to the CPU 11.
- radio communication circuit 25 B digitally modulates the radio carrier wave into a video radio signal using a predetermined digital modulation scheme according to the input video signal, and then transmits a digital radio signal to the video radio signal.
- High-frequency signal processing such as high-frequency conversion and high-frequency amplification is performed, and the processed video wireless signal is wirelessly transmitted to the adapter device 300 B via the antenna 26.
- the radio communication circuit 25 B digitally modulates the radio carrier wave to a radio signal using a predetermined digital modulation scheme according to the input 5 V pulse signal, ACK signal and HPD pulse signal generation request signal, and then converts the high frequency to high frequency. And the like, and transmit the processed radio signal to the adapter 300 B via the antenna 26.
- the radio communication circuit 25 B performs high frequency signal processing such as low frequency conversion and high frequency amplification on the radio signal received by the antenna 26, and the processed radio signal is based on a predetermined digital demodulation method. After demodulation to a band signal, the baseband signal is converted to an HPD pulse signal or an ACK signal and output to the CPU 11.
- the wireless communication circuit 25B wirelessly transmits the input video signal, 5 V pulse signal, ACK signal, and HPD pulse signal generation request signal to the adapter device 300B, while the HPD pulse signal from the adapter device 300B and the ACK signal are transmitted. Wirelessly receive the signal.
- video signal processing circuit 74 A performs decoding processing on the input video signal according to a predetermined decoding method, and outputs the processed video signal to CPU 51.
- the non-image signal generation circuit 75A generates a non-image signal including a black image signal having a predetermined specification and outputs the non-image signal to the CPU 51.
- the interface 57 A executes interface processing with the PDP device 400 A, and signals or data conforming to the DVI standard are connected to the DVI connector. Outputs to the PDP device 400A via the 301A, DVI cable 502A and DVI connector 401A, and receives signals from the PDP device 400A via the DVI connector 401A, DVI cable 502A and DVI connector 301A, and converts the signal. It executes predetermined interface processing including protocol conversion and outputs it to the CPU 51.
- radio communication circuit 55 B digitally modulates the radio carrier wave to a radio signal using a predetermined digital modulation scheme according to the HPD pulse signal and ACK signal input, and then converts it to a radio signal.
- high frequency signal processing such as high frequency conversion and high frequency amplification is performed, and the processed radio signal is transmitted to the adapter device 200 B via the antenna 56.
- the wireless communication circuit 55 B performs high frequency signal processing such as low frequency conversion and high frequency amplification on the video wireless signal received by the antenna 56, and uses a predetermined digital demodulation method for the processed video wireless signal. After demodulation to a baseband signal, the baseband signal is converted to a video signal and output to the CPU 51.
- the wireless communication circuit 55 B performs high frequency signal processing such as low frequency conversion and high frequency amplification on the wireless signal received by the antenna 56, and the processed wireless signal is baseband using a predetermined digital demodulation method. After demodulation to a signal, the baseband signal is converted to a 5 V voltage signal, an HPD pulse signal generation request signal or an ACK signal, and is output to the CPU 51.
- the wireless communication circuit 55B wirelessly transmits the input HPD pulse signal and ACK signal to the adapter device 200B, while the video signal from the adapter device 200B, 5 V pulse signal, ACK signal and HPD pulse signal are generated. Wirelessly receive request signal.
- 401 and interface 450 it comprises DVI terminal 401A and interface 450A.
- the interface 450A performs interface processing with the adapter device 300B, and outputs signals and data conforming to the DVI standard to the adapter device 300B through the DVI connector 401A, the DVI cable 502A, and the DVI connector 301A. It receives a signal input from the adapter device 300B through the DVI connector 301A, the DVI cable 502A, and the DVI connector 501A, executes predetermined interface processing including signal conversion and protocol conversion, and outputs the interface processing to the CPU 411.
- the wireless transmission system according to the above embodiment has the same effect as the wireless transmission system according to the first embodiment.
- FIG. 11 is a block diagram showing a configuration of a wireless transmission system including a DVD player 100A, adapter devices 200C and 300C, and a PDP device 400A according to a fourth embodiment of the present invention.
- the wireless transmission system according to the fourth embodiment is characterized by including adapter devices 200C and 300C instead of the adapter devices 200B and 300B as compared with the wireless transmission system according to the third embodiment.
- the adapter device 200C further includes a wireless communication circuit 27A according to the second embodiment of FIG. 9 instead of the wireless communication circuit 25B, and further includes a wireless communication circuit 27A and an antenna 28.
- the adapter device 300A includes a wireless communication circuit 55A according to the second embodiment of FIG.
- the wireless transmission system according to the fourth embodiment is different from the wireless transmission system according to the third embodiment in that an adapter device 200C and an adapter 200C are added.
- the frequency of the wireless channel for transmitting the video signal to and from the data processing apparatus 300C, and the frequency of the wireless channel for transmitting the 5 V pulse signal, the HPD pulse signal, the ACK signal, and the HPD pulse generation request signal The differences from the second and third embodiments, which are characterized by being different from each other, will be described in detail below.
- wireless communication circuit 27 A digitally modulates the wireless carrier wave to a wireless signal using a predetermined digital modulation scheme in accordance with the input 5 V pulse signal, ACK signal, and HPD pulse signal generation request signal. After that, high-frequency signal processing such as high-frequency conversion is performed, and the processed radio signal is wirelessly transmitted to the adapter device 300C via the antenna 26 using the first radio channel. Furthermore, the wireless communication circuit 27A performs high-frequency signal processing such as low-pass frequency conversion and high-frequency amplification on the wireless signal received by the antenna 28, and uses a predetermined digital demodulation method for the processed wireless signal. After demodulation to a baseband signal, the baseband signal is converted to an HPD pulse signal or an ACK signal and output to the CPU 11.
- the CPU 51 outputs the HPD pulse signal and the ACK signal from the HPD pulse signal generation circuit 73 to the wireless communication circuit 57A. Further, the wireless communication circuit 57A digitally modulates the wireless carrier into a wireless signal using a predetermined digital modulation scheme according to the HPD pulse signal and the ACK signal input, and then converts the high frequency to the high frequency signal of the wireless signal. And radio frequency signal processing such as radio frequency amplification, and the processed radio signal is transmitted via the antenna 58 to the adapter device 200 C using a second radio channel having a frequency different from that of the above first radio channel.
- the processed wireless signal is converted to a baseband signal using a predetermined digital demodulation method. After demodulation, the baseband signal is converted into a 5 V pulse signal, an ACK signal, or an HPD pulse generation request signal, and is output to the CPU 11.
- the wireless transmission system according to the fourth embodiment has the same effect as the wireless transmission system according to the third embodiment. Also, while the video wireless signal is wirelessly transmitted via the antennas 26 and 56 using the first wireless channel, the audio signal, 5 V pulse signal, HPD pulse signal, ACK signal, and HPD pulse generation request signal are respectively transmitted.
- the wireless signal including is wirelessly transmitted via the antennas 28 and 58 using the second wireless channel, compared to the wireless transmission system according to the third embodiment, the imaging via the antennas 26 and 56 is performed.
- the image wireless signal can be wirelessly transmitted with a larger transmission capacity.
- the DVD player 100 and the adapter device 200 B or 200 C are connected using a known conversion connector for connecting the DVI terminal and the HDMI terminal. May be Also, the DVD player 100A and the adapter device 200 or 200A may be connected using the conversion connector described above. Furthermore, the PDP device 400 may be connected to the adapter device 300B or 300C. Furthermore, the PDP device 400A may be connected to the adapter device 300 or 300A.
- the adapter devices 200 and 200A are each externally attached to the DVD player 100.
- the present invention is not limited to this, and may be incorporated in the DVD player 100.
- the adapter devices 300 and 300A are respectively externally attached to the PDP device 400.
- the present invention is not limited to this and may be incorporated in the PDP device 400.
- the adapter devices 200B and 200C may be incorporated in the DVD player 100A without being limited thereto.
- the present invention is not limited thereto.
- the adapter devices 300B and 300C may be incorporated in the PDP device 400A without being limited thereto.
- the present invention is not limited to this.
- the connection can be realized without using a cable, and the connection can be simplified as compared with the prior art. As a result, the degree of freedom of the installation location of the signal source device connected to the first wireless communication device can be increased.
- the first wireless Second wireless communication means for wirelessly transmitting the initialization signal to the first wireless communication device as a second wireless signal, and first wireless communication for the first initialization signal as the second wireless signal
- the signal source device connected to the first wireless communication device is controlled to execute a predetermined first initialization process.
- the first initialization signal can be wirelessly received by the first wireless communication device.
- the connection can be realized without using a cable, and can be simplified as compared with the prior art. Thereby, the degree of freedom of the installation place of the signal sink device connected to the second wireless communication device can be increased.
- the first signal including at least the video signal from the signal source device is wirelessly transmitted as the first wireless signal to the second wireless communication device.
- the degree of freedom in the location of the signal source device connected to the wireless communication device 1 can be increased.
- the third wireless communication which receives the first wireless signal including the first signal including at least the video signal from the first wireless communication apparatus , A fourth wireless communication means for wirelessly transmitting the first initialization signal as the second wireless signal to the first wireless communication apparatus, and the first initialization signal as the second wireless signal
- the fourth wireless communication means so as to wirelessly transmit to the first wireless communication device
- the first wireless communication device is connected to execute a predetermined first initialization process.
- second control means for controlling the signal source device. Accordingly, the first initialization signal can be wirelessly received by the first wireless communication device while the first signal from the first wireless communication device is received.
- the connection can be realized without using a cable, and can be simplified as compared with the prior art. Thereby, the degree of freedom of the installation place of the signal sink device connected to the second wireless communication device can be increased.
- the wireless communication system includes the first wireless communication device of the first invention and the second wireless communication device of the second invention. Therefore, by connecting the first wireless communication device to the signal source device and connecting the second wireless communication device to the signal sink device, the first signal including at least the video signal generated by the signal sink device can be obtained.
- the first initialization signal can be wirelessly transmitted to the signal source device while wirelessly transmitting to the signal sink device. That is, by connecting the signal source device and the signal sink device with a wireless transmission path, the connection can be realized without using a cable, which can be simplified as compared with the prior art. As a result, it is possible to increase the degree of freedom of the installation places of the signal source device connected to the first wireless communication device and the signal sink device connected to the second wireless communication device.
- the wireless communication system of the third invention is provided with the first wireless communication device and the second wireless communication device of the fourth invention.
- connecting the first wireless communication device to the signal source device and connecting the second wireless communication device to the signal sink device can be wirelessly transmitted to the signal sink device, while the first initialization signal can be wirelessly transmitted to the signal source device. That is, by connecting the signal source device and the signal sink device with a wireless transmission path, the connection can be realized without using a cable, which can be simplified as compared with the prior art. As a result, it is possible to increase the degree of freedom of the installation places of the signal source device connected to the first wireless communication device and the signal sink device connected to the second wireless communication device.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US12/088,804 US20090278993A1 (en) | 2005-09-30 | 2006-10-02 | Wireless Transmission System for Wirelessly Connecting Signal Source Apparatus And Signal Sink Apparatus |
JP2007537756A JP4959571B2 (ja) | 2005-09-30 | 2006-10-02 | 無線伝送システム |
CN2006800364181A CN101278268B (zh) | 2005-09-30 | 2006-10-02 | 无线传送系统 |
Applications Claiming Priority (2)
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JP2005287130 | 2005-09-30 | ||
JP2005-287130 | 2005-09-30 |
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WO2007037478A1 true WO2007037478A1 (ja) | 2007-04-05 |
Family
ID=37899891
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PCT/JP2006/319700 WO2007037478A1 (ja) | 2005-09-30 | 2006-10-02 | 無線伝送システム |
Country Status (4)
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US (1) | US20090278993A1 (ja) |
JP (1) | JP4959571B2 (ja) |
CN (2) | CN101909190B (ja) |
WO (1) | WO2007037478A1 (ja) |
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JP2008306687A (ja) * | 2007-06-11 | 2008-12-18 | Toshiba Corp | 映像送信装置および映像送信方法 |
WO2009142001A1 (ja) * | 2008-05-20 | 2009-11-26 | パナソニック株式会社 | ソース装置用アダプタ装置 |
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CN112399098A (zh) * | 2020-12-02 | 2021-02-23 | 龙迅半导体(合肥)股份有限公司 | Hdmi发送器输出信号强度自动配置方法及系统 |
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JPWO2007043713A1 (ja) * | 2005-10-14 | 2009-04-23 | セイコーエプソン株式会社 | インクジェット用記録媒体 |
WO2010087189A1 (ja) * | 2009-01-29 | 2010-08-05 | パナソニック株式会社 | 無線映像音声伝送システム、無線送信装置、音声出力装置及び映像出力装置 |
US8281343B2 (en) * | 2009-05-19 | 2012-10-02 | Cisco Technology, Inc. | Management and display of video content |
JP4592806B1 (ja) * | 2009-06-18 | 2010-12-08 | 株式会社東芝 | 無線通信装置 |
US8365232B2 (en) | 2009-10-22 | 2013-01-29 | Panasonic Corporation | Method, device, system, program, and integrated circuit for wireless transmission |
JP5608475B2 (ja) * | 2010-08-30 | 2014-10-15 | 日立コンシューマエレクトロニクス株式会社 | 伝送システム及びSource機器 |
US8498614B1 (en) * | 2011-07-28 | 2013-07-30 | Rockwell Collins, Inc. | System and method for wireless transmission security |
US9191629B2 (en) * | 2012-06-20 | 2015-11-17 | Simon Sung Lee | Baby monitoring system including video enhancement capability operable at various frequencies |
WO2014061624A1 (ja) * | 2012-10-16 | 2014-04-24 | ソニー株式会社 | 電子機器、電子機器の充電制御方法、電子機器のバッテリ残量表示方法、ソース機器およびシンク機器 |
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CN107666159B (zh) * | 2016-07-28 | 2023-12-26 | 深圳市赛音电子有限公司 | 一种电源装置 |
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Also Published As
Publication number | Publication date |
---|---|
US20090278993A1 (en) | 2009-11-12 |
JPWO2007037478A1 (ja) | 2009-04-16 |
CN101909190B (zh) | 2012-09-26 |
CN101909190A (zh) | 2010-12-08 |
CN101278268A (zh) | 2008-10-01 |
CN101278268B (zh) | 2010-09-29 |
JP4959571B2 (ja) | 2012-06-27 |
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