WO2017141848A1 - Av信号出力装置、av信号入力装置及びav信号入出力システム - Google Patents
Av信号出力装置、av信号入力装置及びav信号入出力システム Download PDFInfo
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- 230000003287 optical effect Effects 0.000 claims abstract description 149
- 238000004891 communication Methods 0.000 claims description 51
- 230000005540 biological transmission Effects 0.000 claims description 30
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 230000008054 signal transmission Effects 0.000 claims description 2
- 238000012986 modification Methods 0.000 description 16
- 230000004048 modification Effects 0.000 description 16
- 238000010586 diagram Methods 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/002—Specific input/output arrangements not covered by G06F3/01 - G06F3/16
- G06F3/005—Input arrangements through a video camera
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
- H04N21/43632—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
-
- 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
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
Definitions
- the present disclosure relates to, for example, adding an existing electric signal in parallel to an existing electric signal transmission path compliant with the HDMI (registered trademark) (High-Definition Multimedia Interface) standard,
- the present invention relates to mutual control of optical transmission.
- Image transmission standards such as HDMI (High-Definition Multimedia Interface) are technologies related to high-definition digital video / audio interfaces, and this technology is widely used for transmission of high-definition digital video / audio signals.
- HDMI registered trademark
- DDC Display (Data) on the receiving side It is highly compatible and widely used, such as enabling connection based on information recorded in (Channel).
- a metal wire interface compliant with an image transmission standard such as HDMI may be described as “existing interface”.
- HDMI Specification Ver.1.3a [Searched on December 11, 2015], Internet ⁇ URL: http://www.hdmi.org/manufacturer/specification.aspx>
- the present disclosure has been made in view of such points, and an optical transmission path is added while using an existing interface method as it is, and a larger amount of information is maintained while maintaining compatibility with the existing interface.
- the purpose is to carry out transmission.
- An AV signal output device includes a first plurality of communication signal lines, a first connector having an optical transmission path for transmitting the first plurality of optical output signals, and an AV signal input thereto.
- a selection output control unit that selects and outputs a plurality of operation signals and a plurality of first optical output signals; and a connection destination of the first connector using the first plurality of communication signal lines.
- An information discriminating unit that reads information, and the information discriminating unit includes an optical information discriminating unit that discriminates optical information from the information, and uses the first plurality of communication signal lines to supply or receive power And the selection output control unit discriminates using the information of the optical information discrimination unit and controls the output.
- an AV signal input device includes a second plurality of communication signal lines, a second connector and an interface having an optical transmission path for a second plurality of optical input signals, and a second plurality of optical signals.
- a selection input control unit that selects and inputs a differential signal and the second plurality of light input signals and outputs an AV signal, and the second plurality of communication signal lines are used to output the second signal.
- An information storage unit that outputs interface information to a connector and power supply or power reception using the second plurality of communication signal lines, wherein the information storage unit includes an optical information storage unit .
- the AV signal input / output system includes the AV signal output device, an interface cable connecting the first connector and the second connector, and the first plurality of differences via the cable.
- a plurality of differential signals, a first signal line for communication and a second signal line for communication are connected, and the first light And the second plurality of lights are connected.
- the optical information transmitted / received through the existing interface is used to determine whether or not the optical connection is possible. It is possible to compensate for the shortage of information amount of the interface.
- FIG. 1 is a block diagram showing a configuration of an AV signal input / output system according to the first embodiment.
- FIG. 2 is a block diagram illustrating a configuration of the information determination unit in the first modification of the first embodiment.
- FIG. 3 is a block diagram illustrating a configuration of the information storage unit in the first modification of the first embodiment.
- FIG. 4 is a block diagram illustrating a configuration of the information determination unit in the second modification of the first embodiment.
- FIG. 5 is a block diagram showing a configuration of the information storage unit in the second modification of the first embodiment.
- FIG. 6 is a block diagram showing a configuration of the AV signal output device according to the third modification of the first embodiment.
- FIG. 1 is a block diagram showing an AV signal input / output system according to the first embodiment.
- the AV signal output device 100 and the AV signal input device 200 are connected to constitute an AV signal input / output system 300.
- the AV signal output device 100 reads the connection destination information to determine whether to perform optical connection, and outputs an AV signal according to the determination result.
- An information discriminating unit 110, a selective output control unit 120, a connector 130, a communication signal line 160 connecting them, a signal line transmitting a differential signal 170, a signal line transmitting a plurality of light output signals 180, etc. Is provided.
- the four pairs of differential signals 170 are transmitted from the selection output control unit 120 to the connector 130.
- a plurality of communication signal lines 160 connect the information discriminating unit 110 and the connector 130. Power is also exchanged through the communication signal line 160.
- the plurality of light output signals 180 are transmitted from the selection output control unit 120 to the connector 130.
- the connector 130 has an optical transmission path for transmitting a plurality of optical output signals 180.
- the information discriminating unit 110 reads the information of the connection destination of the connector 130 using the communication signal line 160.
- the information discriminating unit 110 further includes an optical information discriminating unit 190 that discriminates optical information from connection destination information.
- the selection output control unit 120 receives the optical information 150 from the optical information determination unit 190, performs output selection control, and outputs the input AV signal 140. That is, the selection output control unit 120 switches between the existing differential signal 170 and the light output signal 180.
- the AV signal input device 200 switches the output signal based on the input signal from the connection destination.
- An information storage unit 210, a selection input control unit 220, a connector 230, a communication signal line 260 for connecting them, a signal line for transmitting a differential signal 270, a signal line for transmitting a plurality of optical input signals 280, etc. Is provided.
- the signal line for transmitting the differential signal 270 may be configured with an existing interface.
- the plurality of communication signal lines 260 connect the information storage unit 210 and the connector 230 and may be configured by existing interfaces. Power is also exchanged through the communication signal line 260.
- a plurality of light input signals 280 are input from the connector 230 to the selection input control unit 220.
- the connector 230 has an optical transmission path for a plurality of optical input signals 280.
- the information storage unit 210 outputs information to the connector 230 via the communication signal line 260.
- the information storage unit 210 includes an optical information storage unit 290.
- the optical information storage unit 290 stores information (optical information) indicating whether the AV signal input device 200 can be connected by light.
- the selection input control unit 220 selectively switches between the differential signal 270 and the optical input signal 280 according to the state of the input signal (AV signal transmitted from the connection destination), and outputs the AV signal 240.
- the AV signal input / output system 300 includes a cable 310 that connects the connector 130 of the AV signal output device 100 and the connector 230 of the AV signal input device 200.
- a cable 310 that connects the connector 130 of the AV signal output device 100 and the connector 230 of the AV signal input device 200.
- Four pairs of differential signals 170 and 270, communication signal lines 160 and 260, and a plurality of optical transmission lines included in the connectors 130 and 230 are connected to each other via a cable 310.
- the cable 310 includes both an HDMI (registered trademark) standard signal line and an optical signal line.
- the optical information is determined by communication using the signal lines of the differential signals 170 and 270 and the signal lines 160 and 260 for communication.
- the optical information discriminating unit 110 determines that the connection is made with light
- the transmission path of the optical output signal 180 is used, and optical signal communication is performed. If it is determined that the connection is not made with light, the existing differential signal 170 is output.
- the differential signal 170 or the optical output signal 180 is output from the AV signal output device 100 as an AV signal 140, input to the AV signal input device 200, and output as an AV signal 240. Or smooth switching of the optical signal is realized.
- a plurality of existing communication signal lines 160 and 260 and a signal line for transmitting the existing four pairs of differential signals 170 and 270 are HDMI (registered).
- the communication line such as the DDC line in the trademark (trademark) and the signal lines of the four pairs of differential signals are maintained, and for example, are the same as the signals in the HDMI (registered trademark). Therefore, even if the AV signal output device 100 and the AV signal input device 200 are connected only by an existing interface and a plurality of optical transmission lines are not connected, communication is established within a range compatible with the existing interface.
- the AV signal input / output system 300 is a hybrid system capable of optical communication because a plurality of optical transmission paths are also connected.
- the existing interface that is HDMI (registered trademark) and the light coexist, and switching between the optical and the existing interface is realized by using communication in the existing interface.
- connection using the optical information 150 can be performed after completion of an interface connection protocol compatible with HDMI (registered trademark).
- the existing interface is made of metal wire such as copper wire.
- metal wire such as copper wire.
- a glass fiber or a resin fiber is used for the optical signal line.
- the cable 310 When outputting an AV signal from the AV signal output device 100, first, the cable 310 is connected to the connectors 130 and the connectors 230 of the AV signal output device 100 and the AV signal input device 200, respectively. Thereby, the signal lines of the four pairs of differential signals 170 and 270, the plurality of communication signal lines 160 and 260, and the plurality of optical transmission lines are connected.
- the AV signal output device 100 When the AV signal output device 100 is connected to the AV signal input device 200 via the cable 310, the AV signal output device 100 is connected to the AV signal input device 200 by a connection detection signal line among the plurality of communication signal lines 160. Is detected. When the connection is detected, information is read from the information storage unit 210 of the AV signal input device 200 to the information determination unit 110 through the information communication line of the plurality of communication signal lines 160 and 260.
- the AV signal output device 100 reads the information in the optical information storage unit 290 of the information storage unit 210 of the AV signal input device 200 into the optical information determination unit 190 of the information determination unit 110.
- the optical information storage unit 290 stores an optical capability indicating whether or not light can be received.
- Information in the optical information storage unit 290 is read to the optical information determination unit 190 via the existing interface.
- the read information is sent as optical information 150 to the selective output control unit 120. As a result, it is possible to determine whether light can be connected to the AV signal input device 200.
- the selection output control unit 120 determines whether or not the optical connection is possible based on the optical information 150. When it is determined that the optical information 150 describes that light can be received, the selection output control unit 120 selects to use the optical output signal 180 and switches the output. If it is determined that the optical information 150 does not indicate that the signal can be received by light, the use of four pairs of differential signals 170 is selected and output is started. That is, when it is determined that connection is possible using light, the optical output signal 180 is selected as a communication means, and when it is determined that connection is not possible using light, four pairs of differential signals 170 are selected as communication means. .
- FIG. 2 is a block diagram when the optical information discriminating unit 190 includes the optical connection information discriminating unit 191 in the AV signal output device 100.
- FIG. 3 is a block diagram of the AV signal input apparatus 200 when the optical connection information storage unit 291 is included in the optical information storage unit 290.
- the optical connection information storage unit 291 stores optical connection information when the selective input control unit 220 in the AV signal input device 200 is actually input with light. Thereby, the optical connection information discriminating unit 191 in the AV signal output device 100 can confirm that light is actually connected to the AV signal input device 200. For example, when the optical connection information determination unit 191 determines that the optical connection is made and outputs the optical information 150 to the selective output control unit 120, the optical output signal 180 is continuously used. Further, when the optical connection information determination unit 191 determines that the optical connection is not performed by light and outputs the optical information 150 to the selection output control unit 120, the optical connection information determination unit 191 switches to the four pairs of differential signals 170. Thus, fluid control according to connection is possible.
- the selection input control unit 220 determines whether or not the optical input signal 280 is received. The result is stored in the optical connection information storage unit 291.
- the optical connection information discriminating unit 191 discriminates and extracts information as to whether or not an optical input signal stored in the optical connection information storage unit 291 is received, and outputs it as optical information 150.
- the optical information 150 may be composed only of information indicating whether reception is possible, stored in the optical information storage unit 290, and whether an optical input signal stored in the optical connection information storage unit 291 has been received. May be configured with consideration.
- the selection output control unit 120 makes a comprehensive judgment using the information and determines whether to output with light or with an existing differential signal interface.
- FIG. 4 is a block diagram when the optical error information determination unit 192 is further included in the optical connection information determination unit 191 in the configuration of the first modification.
- FIG. 5 is a block diagram when the optical error information storage unit 292 is further included in the optical connection information storage unit 291 in the configuration of the first modification described above.
- the light error information determination unit 192 in the AV signal output device 100 can confirm the light error state. For example, when the light error information determination unit 192 determines that the light error state is not particularly problematic and outputs the light information 150 to the selective output control unit 120, the light output signal 180 is continuously used. Further, when the optical error information determination unit 192 determines that the optical error is large and a problem occurs in the optical connection, the optical signal is switched to the four pairs of differential signals 170. Fluid control according to such an error state of light becomes possible.
- the selection input control unit 220 has a function of extracting a light error
- the extracted light error information is stored in the light error information storage unit 292.
- the light error information discriminating unit 192 discriminates and extracts the error information stored in the light error information storage unit 292 and outputs it as the light information 150.
- the optical information 150 may be composed only of information indicating whether reception is possible, stored in the optical information storage unit 290, and whether an optical input signal stored in the optical connection information storage unit 291 has been received.
- the light error information storage unit 292 may be used in consideration of the light error information.
- the selection output control unit 120 makes a comprehensive judgment using the information and determines whether to output with light or with an existing differential signal interface.
- FIG. 6 is a block diagram when the optical output switch 182, the connection information signal 161 signal line, and the final output signal 181 signal line are further added to the AV signal output apparatus 100 of the first embodiment.
- the signal line of the connection information signal 160 is one of the communication signals 160 that are existing interfaces.
- the AV signal output device 100 has a plurality of communication signal lines 160 that are existing interfaces, and a signal for detecting that the AV signal input device is connected may be exchanged on these signal lines.
- a connection detection signal called HPD corresponds thereto.
- the optical output switch 182 switches the light output by using a connection information signal 161 that is a signal for detecting this connection, for example, an HPD signal in HDMI (registered trademark).
- a connection information signal 161 that is a signal for detecting this connection
- HDMI registered trademark
- This configuration makes it possible to immediately detect when the cable is disconnected and to control the light output depending on whether it is connected to the connection partner. In other words, light is not accidentally output when it is not connected.
- Embodiment 1 and its modifications have been described as examples of the technology disclosed in the present application.
- the technology in the present disclosure is not limited to this, and can also be applied to an embodiment in which changes, replacements, additions, omissions, and the like are appropriately performed.
- the AV signal output device, AV signal input device, and AV signal input / output system according to the present invention can supply power as it is while maintaining compatibility with existing interfaces, and use an optical signal to reduce the amount of information.
- the present invention is useful as an AV signal output device, AV signal input device and system in which the amount of information is larger than that of an existing interface.
- AV signal output device 110 Information discriminating unit 120 Selective output control unit 130 Connector 140 AV signal 150 Optical information 160 Communication signal line 161 Connection information signal 170 Four pairs of differential signals 180 Optical output signal 181 Final output signal 182 Optical Output switch 190 Optical information determination unit 191 Optical connection information determination unit 192 Optical error information determination unit 200 AV signal input device 210 Information storage unit 220 Selection input control unit 230 Connector 240 AV signal 260 Communication signal line 270 Difference between four pairs Motion signal 280 Optical input signal 290 Optical information storage unit 291 Optical connection information storage unit 292 Optical error information storage unit 300 AV signal input / output system 310 cable
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Abstract
Description
以下、図1を用いて実施の形態1を説明する。
図1は、実施の形態1に係るAV信号入出力システムを示すブロック図である。AV信号出力装置100と、AV信号入力装置200とが接続され、AV信号入出力システム300を構成している。
以上のように構成されたAV信号出力装置100と、AV信号入力装置200を含むAV信号入出力システム300について、その動作を以下に説明する。
以下、図2、3を用いて実施の形態1の変形例1を説明する。図2は、AV信号出力装置100において光接続情報判別部191を光情報判別部190に有した場合のブロック図である。図3は、AV信号入力装置200において、光接続情報格納部291を光情報格納部290に有した場合のブロック図である。
以下、図4、5を用いて実施の形態1の変形例2を説明する。
以下、図6を用いて実施の形態1の変形例3を説明する。
110 情報判別部
120 選択出力制御部
130 コネクタ
140 AV信号
150 光情報
160 通信用の信号線
161 接続情報信号
170 4ペアの差動信号
180 光の出力信号
181 最終出力信号
182 光出力スイッチ
190 光情報判別部
191 光接続情報判別部
192 光のエラー情報判別部
200 AV信号入力装置
210 情報格納部
220 選択入力制御部
230 コネクタ
240 AV信号
260 通信用の信号線
270 4ペアの差動信号
280 光の入力信号
290 光情報格納部
291 光接続情報格納部
292 光のエラー情報格納部
300 AV信号入出力システム
310 ケーブル
Claims (20)
- 第1の複数の通信用の信号線と、
第1の複数の光出力信号を伝送する光伝送路を有する第1のコネクタと、
AV信号を入力として第1の複数の差動信号と前記第1の複数の光出力信号を選択して出力する選択出力制御部と、
前記第1の複数の通信用の信号線を用いて前記第1のコネクタの接続先の情報を読み出す情報判別部とを備え、
前記情報判別部は前記接続先から読み出した情報から光情報を判別する光情報判別部を有し、
前記選択出力制御部は前記情報判別部の光情報を用いて判別して出力を制御し、
前記第1の複数の通信用の信号線を用いて電力供給もしくは電力受電を行う
ことを特徴とするAV信号出力装置。 - 前記光情報は、前記第1のコネクタの接続先が光で通信可能かどうかを示す情報である
ことを特徴とする請求項1記載のAV信号出力装置。 - 前記第1のコネクタの接続先の光情報は、前記第1のコネクタの接続先が光で受信できていることを示す光接続情報を含む
ことを特徴とする請求項1または2記載のAV信号出力装置。 - 前記光接続情報は、前記第1のコネクタの接続先の光の接続状態としてエラー情報を含む
ことを特徴とする請求項3記載のAV信号出力装置。 - 前記光情報判別部は前記光情報及び前記光接続情報の双方で判別した光情報を出力する
ことを特徴とする請求項3または4記載のAV信号出力装置。 - 前記第1の複数の差動信号及び前記第1の複数の通信用の信号線は金属線でできている
ことを特徴とする請求項1~5の何れか1項に記載のAV信号出力装置。 - 前記第1の複数の通信用の信号線に接続したことを検出するための接続情報信号が流れる信号線を含み、前記光出力信号を入力として前記接続情報信号を用いて最終出力信号を出力する光出力スイッチを有し、前記光出力スイッチは前記接続情報信号によって出力の入切を行う
ことを特徴とする請求項1~6の何れか1項に記載のAV信号出力装置。 - 前記第1の複数の差動信号及び前記第1の複数の通信用の信号線を流れる信号はHDMI(登録商標)規格で使用される入出力信号である
ことを特徴とする請求項1~6の何れか1項に記載のAV信号出力装置。 - 前記接続情報信号はHDMI(登録商標)規格におけるHPD信号を示す
ことを特徴とする請求項7記載のAV信号出力装置。 - 第2の複数の通信用の信号線と、
第2の複数の光の入力信号の光伝送路を有する第2のコネクタと
第2の複数の差動信号と前記第2の複数の光の入力信号を選択してAV信号を出力する選択入力制御部と、
前記第2の複数の通信用の信号線を用いて前記第2のコネクタに情報を出力する情報格納部とを備え、
前記第2の複数の通信用の信号線を用いて電力供給もしくは電力受電を行い、前記情報格納部は光情報格納部を有する
ことを特徴とするAV信号入力装置。 - 前記光情報格納部の情報は前記AV信号入力装置が光で通信可能かどうかを示す光情報を含む
ことを特徴とする請求項10記載のAV信号入力装置。 - 前記光情報格納部の情報は、AV信号入力装置が光で受信できていることを示す光接続情報を含む
ことを特徴とする請求項10または11記載のAV信号入力装置。 - 前記光接続情報は、AV信号入力装置の光の接続状態としてエラー情報を含んでいる
ことを特徴とする請求項12記載のAV信号入力装置。 - 前記選択入力制御部は、前記光接続情報により、前記第2の複数の差動信号か、前記第2の複数の光の入力信号のどちらを使用するかどうかを判別して入力を制御する
ことを特徴とする請求項12または13記載のAV信号入力装置。 - 前記第2の複数の差動信号及び前記第2の複数の通信用の信号線は金属線でできている
ことを特徴とする請求項10~14の何れか1項に記載のAV信号入力装置。 - 前記第2の複数の差動信号及び前記第2の複数の通信用の信号線は、HDMI(登録商標)規格で使用される入出力信号である
ことを特徴とする請求項10~15の何れか1項に記載のAV信号入力装置。 - 前記情報格納部は、EDIDである
ことを特徴とする請求項10~16の何れか1項に記載のAV信号入力装置。 - 請求項1~9の何れか1項に記載のAV信号出力装置と、
前記請求項10~17の何れか1項に記載のAV信号入力装置と、
前記第1のコネクタと前記第2のコネクタとを接続するケーブルとを備え、
前記ケーブルを介して、前記第1の複数の差動信号線と前記第2の複数の差動信号線が接続され、前記第1の複数の通信用の信号線と前記第2の複数の通信用の信号線が接続され、前記第1の複数の光伝送路と前記第2の複数の光伝送路が接続される
ことを特徴とするAV信号入出力システム。 - 前記ケーブルは、HDMI(登録商標)の規格の信号線と光の信号線の双方を有する
ことを特徴とする請求項18記載のAV信号入出力システム。 - 前記ケーブルが接続されると、まず前記第1の複数の差動信号と前記第2の複数の差動信号の接続及び前記第1の複数の通信用の信号線と前記第2の複数の通信用の信号線が接続された後、前記光情報を前記光情報判別部が判別した上で、前記第1の複数の光と前記第2の複数の光が接続される
ことを特徴とする請求項18または19記載のAV信号入出力システム。
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