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WO2019021900A1 - Transmission device, transmission method, cable, cable processing method, reception device and reception method - Google Patents

Transmission device, transmission method, cable, cable processing method, reception device and reception method Download PDF

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Publication number
WO2019021900A1
WO2019021900A1 PCT/JP2018/026837 JP2018026837W WO2019021900A1 WO 2019021900 A1 WO2019021900 A1 WO 2019021900A1 JP 2018026837 W JP2018026837 W JP 2018026837W WO 2019021900 A1 WO2019021900 A1 WO 2019021900A1
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WIPO (PCT)
Prior art keywords
cable
line
predetermined
signal
information
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PCT/JP2018/026837
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French (fr)
Japanese (ja)
Inventor
一彰 鳥羽
山本　真也
寛 森田
山本　和夫
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ソニー株式会社
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Publication of WO2019021900A1 publication Critical patent/WO2019021900A1/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • 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

Definitions

  • the present technology relates to a transmitting device, a transmitting method, a cable, a cable processing method, a receiving device, and a receiving method, and more particularly to a transmitting device that can transmit information favorably to a cable or the like.
  • HDMI high definition multimedia interface
  • CE consumer electronics
  • a DDC (Display Data Channel) line and a CEC (Consumer Electronics Control) line are prepared as independent communication paths.
  • the CEC line is a communication independent of the DDC line, and it can be activated regardless of activation, but at the time of connection, there are a lot of traffic to check the connection between each device, and manage the priority There is a need to. Furthermore, it is network control with an address, and has a character not suitable for P2P control.
  • DDC line communication is P2P communication, and no problem will occur if the correspondence between both is confirmed. However, access to non-defined areas may cause unexpected failure in the receiver (sink device).
  • use of the DDC line causes the communication to pass to the receiver if the cable is a non-compliant cable, causing the problems described above.
  • An object of the present technology is to enable good transmission of information from a transmitter to a cable or the like.
  • a signal transmission unit that transmits video signals to a receiving apparatus by a plurality of channels, by differential signals, and through a cable;
  • a transmission apparatus including an information transmission unit that transmits predetermined information superimposed on a predetermined line of the cable.
  • the video signal is transmitted to the receiving device via the cable by the differential signal and the plurality of channels by the signal transmission unit.
  • the information transmission unit superimposes predetermined information on a predetermined line of the cable and transmits it.
  • the predetermined line may be set to be a power supply line.
  • the predetermined information may be an amplitude signal that transitions within the standard range of the power supply line.
  • the predetermined information may be a permission signal for permitting the cable to consume current equal to or more than a specified value.
  • the predetermined information may be made to be a signal sequence consisting of a start bit, an operand and an end bit.
  • the information transmission unit may be configured to superimpose predetermined information repeatedly on a predetermined line.
  • predetermined information is superimposed and transmitted on a predetermined line of the cable. Therefore, predetermined information can be transmitted favorably to a cable or a receiver.
  • a cable disposed between a transmitting device that transmits video signals to a receiving device by a plurality of channels and differential signals, and the receiving device, A receiver for receiving predetermined information superimposed on a predetermined line of the cable; A cable is provided with a processing unit that performs processing based on the predetermined information.
  • the receiving unit receives the predetermined information superimposed on the predetermined line of the cable.
  • the predetermined line may be set to be a power supply line.
  • the predetermined information may be an amplitude signal that transitions within the standard range of the power supply line.
  • the processing unit performs processing based on predetermined information.
  • the predetermined information may be a permission signal for permitting current consumption equal to or more than a specified value.
  • a permission signal for permitting current consumption equal to or more than a specified value.
  • an active element that consumes a current equal to or greater than a specified value may be provided, and the processing unit may be controlled to operate the active element when receiving the permission signal.
  • the predetermined information superimposed on the predetermined line of the cable is received, and the processing based on the predetermined information is performed. Therefore, the process according to the predetermined information from the transmission device can be appropriately performed.
  • a cable disposed between a transmitting device that transmits video signals to a receiving device by a plurality of channels and differential signals, and the receiving device,
  • a cable is provided with an information transmission unit that superimposes and transmits predetermined information on a predetermined line of the cable.
  • the predetermined information is superimposed on the predetermined line of the cable and transmitted by the information transmission unit.
  • the predetermined line may be set to be a power supply line.
  • the predetermined information may be an acceptance confirmation signal for a permission signal for permitting current consumption equal to or more than a specified value transmitted from the transmission device.
  • the predetermined line may be a connection confirmation line
  • the information transmitting unit may be configured to transmit an acceptance confirmation signal by activating the connection confirmation line.
  • the predetermined line may be a data line, and the information transmission unit may transmit the acceptance confirmation signal by activating the bias voltage of the data line.
  • predetermined information is superimposed and transmitted on a predetermined line of the cable. Therefore, predetermined information can be favorably transmitted to the transmission device and the reception device.
  • a receiving apparatus includes a processing unit that performs processing based on the predetermined information.
  • the video signal is received by the signal reception unit from the transmission device via the cable as a differential signal by a plurality of channels.
  • the information receiving unit receives predetermined information transmitted superimposed on a predetermined line of the cable.
  • the processing unit performs processing based on the predetermined information.
  • the predetermined information superimposed on the predetermined line of the cable is received, and the processing based on the predetermined information is performed. Therefore, the process according to the predetermined information from the transmission device can be appropriately performed.
  • information can be favorably transmitted from the transmission device to a cable or the like.
  • the effects described in the present specification are merely examples and are not limited, and additional effects may be present.
  • FIG. 1 is a diagram illustrating a configuration example of a transmission system as an embodiment. It is a figure which shows an example of the signal superimposition circuit in + 5V power supply line. It is a figure which shows the signal example of the + 5V power supply line on which the signal was superimposed. It is a figure which shows the control processing flow of an HDMI transmitter. It is a figure which shows the control processing flow of a cable. It is a figure which shows the example which transmits the acceptance command using the means of revalidation of a HPD signal. It is a figure which shows the example which transmits the acceptance command using the means of bias voltage validation of a data line.
  • FIG. 1 shows a configuration example of a transmission system 10 as an embodiment.
  • the transmission system 10 is an HDMI transmission system using HDMI as a digital interface.
  • the transmission system 10 includes an HDM transmitter 110 that is a source device, an HDMI receiver 120 that is a sink device, and an HDMI cable 130 that connects these.
  • the transmission channels of the transmission system 10 include three TMDS channels that transmit video, audio, and control signals as digital signals as TMDS data, and one TMDS clock channel that transmits a clock signal.
  • the TMDS channel and the TMDS clock channel each consist of two differential signal lines.
  • control signal lanes of the HDMI system there are a DDC line, a CEC line, an HPD line, a Utility line, and a +5 V power supply line.
  • the DDC line consists of two signal lines, an SDA line and an SCL line included in the cable 130.
  • the DDC line is used, for example, for the HDMI transmitter 110 to read the EDID from the HDMI receiver 120.
  • the CEC line is used to perform bi-directional communication of control data between the HDMI transmitter 110 and the HDMI receiver 120.
  • a signal (predetermined information) is superimposed on the +5 V power supply line, and between the HDMI transmitter 110 and the cable 130, between the HDMI transmitter 110 and the HDMI receiver 120, and further between the cable 130 and the HDMI reception. Communication is performed between the machines 120.
  • the + 5V power supply line is provided with a tolerance of 4.8V to 5.3V on the transmitter side and 4.7V to 5.2V on the receiver side, and as long as the signal amplitude does not exceed the range, There is a low possibility of malfunction in the compatible devices.
  • the HDMI is provided with the HPD line, the Utility line, etc., but these may be used in other functions such as the HEAC (HDMI Ethernet and Audio Return Channel). Superimposition may be difficult. Further, since a plurality of GND lines are provided as shield lines of the differential transmission lines, it is assumed that return currents of differential signals flow, and it is difficult to superimpose the signals there.
  • HEAC HDMI Ethernet and Audio Return Channel
  • the HDMI transmitter 110 and the HDMI receiver 120 are connected to perform HDMI transmission with an HDMI cable. Further, the HDMI cable 130 used for connection incorporates an active element 131 for signal shaping or optical communication conversion for long-distance stable transmission.
  • the active element 131 In the operation of the active element 131, it is necessary to supply a current of a specified value or more from the HDMI transmitter 110. However, if the current not higher than the specified value is consumed by itself from the non-compliant HDMI transmitter, the HDMI transmitter or the HDMI receiver may malfunction.
  • the HDMI transmitter 110 is designed to allow current consumption equal to or more than a specified value. Then, communication is performed between the HDMI transmitter 110 and the cable 130, and the active element 131 in the cable 130 is supplied with power from the HDMI transmitter 110 only when the correspondence between both is confirmed.
  • the HDMI transmitter 110 When receiving an HPD signal (connection detection signal) from the cable 130, the HDMI transmitter 110 superimposes a small amplitude signal on its +5 V power supply line and transmits the signal to the cable 130 within a certain period.
  • the superimposed signal is made not to exceed 4.8 V to 5.3 V which is the DC specification of the +5 V power supply line.
  • the signal superimposed on the +5 V power supply line is a permission signal for permitting current consumption equal to or more than a specified value.
  • FIG. 2 shows an example of a signal superposition circuit in the +5 V power supply line.
  • the HDMI transmitter 110 includes a 5 V supply circuit 111 and a transmission signal superimposing circuit 112. Also, for example, the active element 131 of the cable 130 has the superimposed signal reception circuit 133.
  • the signal to be superimposed is, for example, a signal sequence including a start bit, an operand, and an end bit, and the receiving side recognizes the communication timing from the start bit and receives the contents of the operand.
  • the same signal may be transmitted multiple times for the purpose of stable reception.
  • FIG. 3 shows a signal example of the +5 V power supply line on which the signal is superimposed.
  • the cable 130 When the cable 130 receives the superimposed signal (permission signal) on the +5 V power supply line, it determines that the current consumption from the HDMI transmitter 110 is permitted, and the power supply for operating its own active element 131 is an HDMI transmitter. Earn from 110.
  • the cable 130 prior to the permission determination, the cable 130 must receive the superimposed signal so as not to consume current more than a specified value.
  • FIG. 4 shows a control processing flow of the HDMI transmitter 110.
  • the HDMI transmitter 110 starts control processing in step ST1.
  • the HDMI transmitter 110 transmits 5V power on the + 5V power supply line in step ST2, and then receives a connection detection signal from the cable 130 through the HPD line in step ST3.
  • step ST4 the HDMI transmitter 110 superimposes the signal of the permission command on the +5 V power supply line and transmits it to the cable 130.
  • the HDMI transmitter 110 receives the acceptance command (acceptance confirmation signal) from the cable 130 in step ST5.
  • step ST6 the HDMI transmitter 110 is in the current consumption enabled state, that is, the state where the cable 130 can consume current of a specified value or more.
  • step ST7 the series of control processing is ended.
  • FIG. 5 shows a control processing flow of the cable 130.
  • the cable 130 starts control processing in step ST11.
  • step ST12 the cable 130 receives 5V power on the + 5V power supply line, and then transmits a connection detection signal to the HDMI transmitter 110 through the HPD line in step ST13.
  • step ST14 the cable 130 receives, from the HDMI transmitter 110, a permission command transmitted superimposed on the +5 V power supply line.
  • the cable 130 transmits the acceptance command (acceptance confirmation signal) to the HDMI transmitter 110 in step ST15.
  • step ST16 the cable 130 controls the active element 131 to operate to start power consumption. Then, the cable 130 ends the series of control processing in step ST17.
  • the cable 130 transmits the acceptance command (acceptance confirmation signal) to the HDMI transmitter 110 in the control processing flow of FIGS. 4 and 5, this transmission may be omitted.
  • the cable 130 transmits the acceptance command to the HDMI transmitter 110, after detecting that the +5 V power supply line is not in use, the reception command may be superimposed on the +5 V power supply line and transmitted to the HDMI transmitter 110. Good.
  • the cable 130 is not implemented by transmitting the acceptance command on the +5 V power supply line in a superimposed manner, but is realized using other methods, for example, means such as revalidation of the HPD signal or bias voltage validation of the data line. It may be done.
  • FIG. 6 shows an example in which the transmission of the acceptance command is performed using the means of revalidation of the HPD signal.
  • parts corresponding to those in FIG. 1 are given the same reference numerals.
  • the switch 135 is inserted into the HPD line, and the switch 135 is turned on / off by the active element 131, for example, so that the acceptance command is superimposed on the HPD line and sent to the HDMI transmitter 110.
  • the control unit 116 of the HDMI transmitter 110 receives this acceptance command from the HPD line.
  • FIG. 7 shows an example in which the transmission of the acceptance command is performed using means for enabling the bias voltage of the data line.
  • parts corresponding to those in FIG. 1 are given the same reference numerals.
  • the switches 136 and 137 are inserted in the line connected to the termination resistance of the TMDS line, and the switch 136 and 137 is controlled to be on / off by the active element 131, for example.
  • the control unit 116 of the HDMI transmitter 110 receives this acceptance command from the data line.
  • the HDMI transmitter 110 superimposes a signal (predetermined information) on the +5 V power supply line and transmits it. Therefore, communication with the cable 130 can be realized without affecting the HDMI receiver 120, and the cable 130 containing the active element 131 and power feeding from the HDMI transmitter 110 to the cable 130 can be realized. Function can be realized.
  • the transmission system in which the source device and the sink device are connected by the HDMI cable has been described as an example.
  • the present technology is equally applicable to a cable that uses the mechanism defined in the “VESA Plug and Display (P & D) Specification” for the transmitting device and the receiving device, and thus to DVI, MHL, Display Port, etc.
  • P & D VESA Plug and Display
  • the present technology realizes long distance transmission by AOC (active optical cable: cable internally converted to optical fiber and transmitting long distance without deterioration) or ACC (active kappa cable: waveform shaping by internal elements) It is also possible to apply to not only the above-mentioned cable) but also a cable for converting wireless communication etc.
  • the present technology can also be configured as follows.
  • a transmitter comprising: an information transmitter configured to transmit predetermined information superimposed on a predetermined line of the cable.
  • the predetermined information is an amplitude signal that transitions within a standard range of the power supply line.
  • the predetermined information is a permission signal for permitting the cable to consume current equal to or greater than a specified value.
  • the transmission apparatus according to any one of (1) to (4), wherein the predetermined information is a signal sequence including a start bit, an operand, and an end bit.
  • the information transmission unit repeatedly superimposes the predetermined information on the predetermined line.
  • a signal transmission step in which the signal transmission unit transmits the video signal to the reception device through a cable by differential signals and by a plurality of channels.
  • a transmission method comprising: an information transmission step in which an information transmission unit superimposes and transmits predetermined information on a predetermined line of the cable.
  • the predetermined information is a permission signal for permitting current consumption equal to or more than a specified value.
  • the predetermined line is a power supply line.
  • the predetermined information is an acceptance confirmation signal for a permission signal for permitting current consumption equal to or more than a specified value transmitted from the transmission device.
  • the predetermined line is a connection confirmation line, The cable according to (16), wherein the information transmission unit transmits the acceptance confirmation signal by reactivating the connection confirmation signal.
  • the predetermined line is a data line, The cable according to (16), wherein the information transmission unit transmits the acceptance confirmation signal by validating a bias voltage of the data line.
  • a signal receiving unit for receiving video signals from a transmitting apparatus by a plurality of channels, by differential signals, and through a cable An information receiving unit for receiving predetermined information transmitted superimposed on a predetermined line of the cable; A processing unit that performs processing based on the predetermined information; (20) a signal receiving step in which the signal receiving unit receives video signals from the transmitting apparatus via a cable by differential signals and by a plurality of channels; An information receiving step in which the information receiving unit receives predetermined information transmitted superimposed on a predetermined line of the cable; A processing step of processing the processing unit based on the predetermined information.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
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  • Computer Networks & Wireless Communication (AREA)
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Abstract

The present invention allows excellent transmission of information from a transmission device to a cable and the like. A transmitter transmits video signals, in multiple channels and by using differential signaling, to a reception device via the cable. The transmitter transmits prescribed information by superimposing said prescribed information on a prescribed line of the cable. The cable receives the prescribed information superimposed on the prescribed line of the cable and performs processing based on said prescribed information.

Description

送信装置、送信方法、ケーブル、ケーブルの処理方法、受信装置および受信方法Transmission apparatus, transmission method, cable, cable processing method, reception apparatus and reception method
　本技術は、送信装置、送信方法、ケーブル、ケーブルの処理方法、受信装置および受信方法に関し、特に、ケーブル等に情報を良好に送信し得る送信装置等に関する。 The present technology relates to a transmitting device, a transmitting method, a cable, a cable processing method, a receiving device, and a receiving method, and more particularly to a transmitting device that can transmit information favorably to a cable or the like.
　近年、ＣＥ（Consumer Electronics）機器をつなぐデジタルインタフェースとして、ＨＤＭＩ(High Definition Multimedia Interface)など用いられている。例えば、特許文献１には、ＨＤＭＩ規格についての記載がある。このＨＤＭＩ規格においては、３データ差動ラインペアを用いて、デジタル信号としてビデオ、オーディオ、コントロールの各信号の伝送を行っている。 BACKGROUND In recent years, high definition multimedia interface (HDMI) or the like is used as a digital interface for connecting consumer electronics (CE) devices. For example, Patent Document 1 describes the HDMI standard. In the HDMI standard, transmission of video, audio and control signals as digital signals is performed using three data differential line pairs.
特開２０１５－１１１４１８号公報JP, 2015-111418, A
　ＨＤＭＩとしては、ＤＤＣ（Display Data Channel）ラインおよびＣＥＣ（Consumer Electronics Control）ラインが独立した通信路として準備されている。ＣＥＣラインはＤＤＣラインとは独立した通信となっており、起動の有無を問わず起動することが可能であるが、接続時には各機器間での接続確認のため、トラフィックが多く、優先度を管理する必要がある。さらにアドレスを持つネットワーク制御となっており、Ｐ２Ｐ制御には向かない性格も持つ。 As HDMI, a DDC (Display Data Channel) line and a CEC (Consumer Electronics Control) line are prepared as independent communication paths. The CEC line is a communication independent of the DDC line, and it can be activated regardless of activation, but at the time of connection, there are a lot of traffic to check the connection between each device, and manage the priority There is a need to. Furthermore, it is network control with an address, and has a character not suitable for P2P control.
　ＤＤＣライン通信はＰ２Ｐ通信であり、双方において対応が確認されていれば問題は生じない。しかし、非規定領域へのアクセスは受信機（シンク機器）において予想しない不具合を生じる可能性がある。ケーブルと送信器（ソース機器）との間で通信が必要となった場合、ＤＤＣラインを使用すると、そのケーブルが非対応ケーブルであれば通信は受信機まで通過し、上述の問題を生じる。 DDC line communication is P2P communication, and no problem will occur if the correspondence between both is confirmed. However, access to non-defined areas may cause unexpected failure in the receiver (sink device). When communication is required between the cable and the transmitter (source device), use of the DDC line causes the communication to pass to the receiver if the cable is a non-compliant cable, causing the problems described above.
　本技術の目的は、送信装置からケーブル等に情報を良好に送信可能とすることにある。 An object of the present technology is to enable good transmission of information from a transmitter to a cable or the like.
　本技術の概念は、
　映像信号を、複数チャネルで、差動信号により、ケーブルを介して、受信装置に送信する信号送信部と、
　上記ケーブルの所定ラインに所定情報を重畳して送信する情報送信部を備える
　送信装置にある。 The concept of this technology is
A signal transmission unit that transmits video signals to a receiving apparatus by a plurality of channels, by differential signals, and through a cable;
According to another aspect of the present invention, there is provided a transmission apparatus including an information transmission unit that transmits predetermined information superimposed on a predetermined line of the cable.
　本技術において、信号送信部により、映像信号が、複数チャネルで、差動信号により、ケーブルを介して、受信装置に送信される。情報送信部により、ケーブルの所定ラインに所定情報が重畳されて送信される。例えば、所定ラインは、電源ラインである、ようにされてもよい。この場合、例えば、所定情報は、電源ラインの規格範囲内で遷移する振幅信号である、ようにされてもよい。 In the present technology, the video signal is transmitted to the receiving device via the cable by the differential signal and the plurality of channels by the signal transmission unit. The information transmission unit superimposes predetermined information on a predetermined line of the cable and transmits it. For example, the predetermined line may be set to be a power supply line. In this case, for example, the predetermined information may be an amplitude signal that transitions within the standard range of the power supply line.
　また、例えば、所定情報は、ケーブルに規定値以上の電流消費を許可する許可信号である、ようにされてもよい。また、例えば、所定情報は、開始ビット、オペランドおよび終了ビットからなる信号列である、ようにされてもよい。また、例えば、情報送信部は、所定情報を複数回繰り返し所定ラインに重畳する、ようにされてもよい。 Also, for example, the predetermined information may be a permission signal for permitting the cable to consume current equal to or more than a specified value. Also, for example, the predetermined information may be made to be a signal sequence consisting of a start bit, an operand and an end bit. Also, for example, the information transmission unit may be configured to superimpose predetermined information repeatedly on a predetermined line.
　このように本技術においては、ケーブルの所定ラインに所定情報を重畳して送信するものである。そのため、ケーブルや受信装置に所定情報を良好に送信できる。 As described above, in the present technology, predetermined information is superimposed and transmitted on a predetermined line of the cable. Therefore, predetermined information can be transmitted favorably to a cable or a receiver.
　また、本技術の他の概念は、
　映像信号を、複数チャネルで、差動信号により、受信装置に送信する送信装置と上記受信装置との間に配置されるケーブルであって、
　上記ケーブルの所定ラインに重畳されている所定情報を受信する受信部と、
　上記所定情報に基づいた処理を行う処理部を備える
　ケーブルにある。 Also, the other concept of this technology is
A cable disposed between a transmitting device that transmits video signals to a receiving device by a plurality of channels and differential signals, and the receiving device,
A receiver for receiving predetermined information superimposed on a predetermined line of the cable;
A cable is provided with a processing unit that performs processing based on the predetermined information.
　本技術において、受信部により、ケーブルの所定ラインに重畳されている所定情報が受信される。例えば、所定ラインは、電源ラインである、ようにされてもよい。この場合、例えば、所定情報は、電源ラインの規格範囲内で遷移する振幅信号である、ようにされてもよい。処理部により、所定情報に基づいた処理が行われる。 In the present technology, the receiving unit receives the predetermined information superimposed on the predetermined line of the cable. For example, the predetermined line may be set to be a power supply line. In this case, for example, the predetermined information may be an amplitude signal that transitions within the standard range of the power supply line. The processing unit performs processing based on predetermined information.
　また、例えば、所定情報は、規定値以上の電流消費を許可する許可信号である、ようにされてもよい。この場合、例えば、規定値以上の電流を消費する能動素子を備え、処理部は、許可信号を受信したとき、能動素子が動作するように制御する、ようにされてもよい。 Also, for example, the predetermined information may be a permission signal for permitting current consumption equal to or more than a specified value. In this case, for example, an active element that consumes a current equal to or greater than a specified value may be provided, and the processing unit may be controlled to operate the active element when receiving the permission signal.
　このように本技術においては、ケーブルの所定ラインに重畳されている所定情報を受信し、この所定情報に基づいた処理を行うものである。そのため、送信装置からの所定情報に応じた処理を適切に行うことができる。 As described above, in the present technology, the predetermined information superimposed on the predetermined line of the cable is received, and the processing based on the predetermined information is performed. Therefore, the process according to the predetermined information from the transmission device can be appropriately performed.
　また、本技術の他の概念は、
　映像信号を、複数チャネルで、差動信号により、受信装置に送信する送信装置と上記受信装置との間に配置されるケーブルであって、
　上記ケーブルの所定ラインに所定情報を重畳して送信する情報送信部を備える
　ケーブルにある。 Also, the other concept of this technology is
A cable disposed between a transmitting device that transmits video signals to a receiving device by a plurality of channels and differential signals, and the receiving device,
A cable is provided with an information transmission unit that superimposes and transmits predetermined information on a predetermined line of the cable.
　本技術において、情報送信部により、ケーブルの所定ラインに所定情報が重畳されて送信される。例えば、所定ラインは、電源ラインである、ようにされてもよい。また、例えば、所定情報は、送信装置より送られてくる規定値以上の電流消費を許可する許可信号に対する受諾確認信号である、ようにされてもよい。 In the present technology, the predetermined information is superimposed on the predetermined line of the cable and transmitted by the information transmission unit. For example, the predetermined line may be set to be a power supply line. Also, for example, the predetermined information may be an acceptance confirmation signal for a permission signal for permitting current consumption equal to or more than a specified value transmitted from the transmission device.
　この場合、例えば、所定ラインは、接続確認ラインであり、情報送信部は、接続確認ラインを有効化することで受諾確認信号を送信する、ようにされてもよい。また、この場合、例えば、所定ラインは、データラインであり、情報送信部は、データラインのバイアス電圧を有効化することで受諾確認信号を送信する、ようにされてもよい。 In this case, for example, the predetermined line may be a connection confirmation line, and the information transmitting unit may be configured to transmit an acceptance confirmation signal by activating the connection confirmation line. Also, in this case, for example, the predetermined line may be a data line, and the information transmission unit may transmit the acceptance confirmation signal by activating the bias voltage of the data line.
　このように技術においては、ケーブルの所定ラインに所定情報を重畳して送信するものである。そのため、送信装置や受信装置に所定情報を良好に送信できる。 As described above, in the technology, predetermined information is superimposed and transmitted on a predetermined line of the cable. Therefore, predetermined information can be favorably transmitted to the transmission device and the reception device.
　また、本技術の他の概念は、
　映像信号を、複数チャネルで、差動信号により、ケーブルを介して、送信装置から受信する信号受信部と、
　上記ケーブルの所定ラインに重畳されて送られてくる所定情報を受信する情報受信部と、
　上記所定情報に基づいた処理をする処理部を備える
　受信装置にある。 Also, the other concept of this technology is
A signal reception unit that receives video signals from a transmitter by a plurality of channels, by differential signals, and via a cable;
An information receiving unit for receiving predetermined information transmitted superimposed on a predetermined line of the cable;
According to another aspect of the present invention, a receiving apparatus includes a processing unit that performs processing based on the predetermined information.
　本技術において、信号受信部により、映像信号が、複数チャネルで、差動信号により、ケーブルを介して、送信装置から受信される。情報受信部により、ケーブルの所定ラインに重畳されて送られてくる所定情報が受信される。そして、処理部により、所定情報に基づいた処理が行われる。 In the present technology, the video signal is received by the signal reception unit from the transmission device via the cable as a differential signal by a plurality of channels. The information receiving unit receives predetermined information transmitted superimposed on a predetermined line of the cable. Then, the processing unit performs processing based on the predetermined information.
　このように本技術においては、ケーブルの所定ラインに重畳されている所定情報を受信し、この所定情報に基づいた処理を行うものである。そのため、送信装置からの所定情報に応じた処理を適切に行うことができる。 As described above, in the present technology, the predetermined information superimposed on the predetermined line of the cable is received, and the processing based on the predetermined information is performed. Therefore, the process according to the predetermined information from the transmission device can be appropriately performed.
　本技術によれば、送信装置からケーブル等に情報を良好に送信できる。なお、本明細書に記載された効果はあくまで例示であって限定されるものではなく、また付加的な効果があってもよい。 According to the present technology, information can be favorably transmitted from the transmission device to a cable or the like. The effects described in the present specification are merely examples and are not limited, and additional effects may be present.
実施の形態としての伝送システムの構成例を示す図である。BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a diagram illustrating a configuration example of a transmission system as an embodiment. ＋５Ｖ電源ラインでの信号重畳回路の一例を示す図である。It is a figure which shows an example of the signal superimposition circuit in + 5V power supply line. 信号が重畳された＋５Ｖ電源ラインの信号例を示す図である。It is a figure which shows the signal example of the + 5V power supply line on which the signal was superimposed. ＨＤＭＩ送信機の制御処理フローを示す図である。It is a figure which shows the control processing flow of an HDMI transmitter. ケーブルの制御処理フローを示す図である。It is a figure which shows the control processing flow of a cable. 受託コマンドの送信をＨＰＤ信号の再有効化の手段を用いて行う例を示す図である。It is a figure which shows the example which transmits the acceptance command using the means of revalidation of a HPD signal. 受託コマンドの送信をデータラインのバイアス電圧有効化の手段を用いて行う例を示す図である。It is a figure which shows the example which transmits the acceptance command using the means of bias voltage validation of a data line.
　以下、発明を実施するための形態（以下、「実施の形態」とする）について説明する。なお、説明を以下の順序で行う。
　１．実施の形態
　２．変形例 Hereinafter, modes for carrying out the invention (hereinafter referred to as “embodiments”) will be described. The description will be made in the following order.
1. Embodiment 2. Modified example
　＜１．実施の形態＞
　［伝送システムの構成］
　図１は、実施の形態としての伝送システム１０の構成例を示している。この伝送システム１０は、デジタルインタフェースとしてＨＤＭＩを用いたＨＤＭＩ伝送システムである。この伝送システム１０は、ソース機器であるＨＤＭ送信機１１０と、シンク機器であるＨＤＭＩ受信機１２０と、これらを接続するＨＤＭＩケーブル１３０を有している。 <1. Embodiment>
Transmission system configuration
FIG. 1 shows a configuration example of a transmission system 10 as an embodiment. The transmission system 10 is an HDMI transmission system using HDMI as a digital interface. The transmission system 10 includes an HDM transmitter 110 that is a source device, an HDMI receiver 120 that is a sink device, and an HDMI cable 130 that connects these.
　伝送システム１０の伝送チャネルには、デジタル信号としてビデオ、オーディオ、コントロールの各信号をＴＭＤＳデータで伝送する３つのＴＭＤＳチャネルと、クロック信号を伝送する１つのＴＭＤＳクロックチャネルがある。ＴＭＤＳチャネルおよびＴＭＤＳクロックチャネルは、それぞれ、２本の差動信号ラインからなる。 The transmission channels of the transmission system 10 include three TMDS channels that transmit video, audio, and control signals as digital signals as TMDS data, and one TMDS clock channel that transmits a clock signal. The TMDS channel and the TMDS clock channel each consist of two differential signal lines.
　また、ＨＤＭＩシステムの制御信号レーンとして、ＤＤＣライン、ＣＥＣライン、ＨＰＤライン、Ｕｔｉｌｉｔｙライン、＋５Ｖ電源ラインがある。ＤＤＣラインは、ケーブル１３０に含まれるＳＤＡラインおよびＳＣＬラインの２本の信号線からなる。ＤＤＣラインは、例えば、ＨＤＭＩ送信機１１０がＨＤＭＩ受信機１２０からＥＤＩＤを読み出すために使用される。ＣＥＣラインは、ＨＤＭＩ送信機１１０とＨＤＭＩ受信機１２０との間で制御用のデータの双方向通信を行うために用いられる。 Further, as control signal lanes of the HDMI system, there are a DDC line, a CEC line, an HPD line, a Utility line, and a +5 V power supply line. The DDC line consists of two signal lines, an SDA line and an SCL line included in the cable 130. The DDC line is used, for example, for the HDMI transmitter 110 to read the EDID from the HDMI receiver 120. The CEC line is used to perform bi-directional communication of control data between the HDMI transmitter 110 and the HDMI receiver 120.
　この実施の形態では、＋５Ｖ電源ラインに、信号（所定情報）が重畳されて、ＨＤＭＩ送信機１１０とケーブル１３０の間、ＨＤＭＩ送信機１１０とＨＤＭＩ受信機１２０の間、さらにはケーブル１３０とＨＤＭＩ受信機１２０の間で、通信が行われる。＋５Ｖ電源ラインは、規格上、送信機側で４．８Ｖ～５．３Ｖ、受信機側で４．７Ｖ～５．２Ｖのトレランスが設けられており、信号振幅がそのレンジを超えない限り、非対応機器で誤動作を生じる可能性は低い。 In this embodiment, a signal (predetermined information) is superimposed on the +5 V power supply line, and between the HDMI transmitter 110 and the cable 130, between the HDMI transmitter 110 and the HDMI receiver 120, and further between the cable 130 and the HDMI reception. Communication is performed between the machines 120. According to the standard, the + 5V power supply line is provided with a tolerance of 4.8V to 5.3V on the transmitter side and 4.7V to 5.2V on the receiver side, and as long as the signal amplitude does not exceed the range, There is a low possibility of malfunction in the compatible devices.
　ＨＤＭＩには、上述したようにＨＰＤライン、Ｕｔｉｌｉｔｙライン等が準備されているが、これらはＨＥＡＣ（HDMI Ethernet and Audio return Channel）等の他の機能で使われていることもあり、更なる信号の重畳は困難な場合がある。また、複数設けられているＧＮＤラインは各差動伝送ラインのシールドラインとされているため、差動信号のリターン電流が流れることが想定され、そこに信号を重畳することは困難である。 As described above, the HDMI is provided with the HPD line, the Utility line, etc., but these may be used in other functions such as the HEAC (HDMI Ethernet and Audio Return Channel). Superimposition may be difficult. Further, since a plurality of GND lines are provided as shield lines of the differential transmission lines, it is assumed that return currents of differential signals flow, and it is difficult to superimpose the signals there.
　以下、具体的な例を挙げて説明する。ＨＤＭＩ送信機１１０とＨＤＭＩ受信機１２０がＨＤＭＩケーブルでＨＤＭＩ伝送を行うべく、接続されている。また、接続に用いられているＨＤＭＩケーブル１３０には、長距離安定伝送を目的とした信号成形あるいは光通信変換用の能動素子１３１が内蔵されている。 Hereinafter, description will be given by taking a specific example. The HDMI transmitter 110 and the HDMI receiver 120 are connected to perform HDMI transmission with an HDMI cable. Further, the HDMI cable 130 used for connection incorporates an active element 131 for signal shaping or optical communication conversion for long-distance stable transmission.
　この能動素子１３１の動作においては、規定値以上の電流がＨＤＭＩ送信機１１０から供給される必要がある。しかしながら、非対応のＨＤＭＩ送信機から勝手に規定値以上の電流を消費すると、ＨＤＭＩ送信機あるいはＨＤＭＩ受信機において、誤動作をしてしまう可能性がある。 In the operation of the active element 131, it is necessary to supply a current of a specified value or more from the HDMI transmitter 110. However, if the current not higher than the specified value is consumed by itself from the non-compliant HDMI transmitter, the HDMI transmitter or the HDMI receiver may malfunction.
　そのため、ＨＤＭＩ送信機１１０は、能動素子１３１を内蔵したケーブル１３０との接続を想定して、規定値以上の電流消費を許容する設計が施されている。そして、ＨＤＭＩ送信機１１０とケーブル１３０との間で通信を行って、双方の対応が確認された場合のみ、ケーブル１３０内の能動素子１３１がＨＤＭＩ送信機１１０から給電を受けるようにされる。 Therefore, assuming that the HDMI transmitter 110 is connected to the cable 130 incorporating the active element 131, the HDMI transmitter 110 is designed to allow current consumption equal to or more than a specified value. Then, communication is performed between the HDMI transmitter 110 and the cable 130, and the active element 131 in the cable 130 is supplied with power from the HDMI transmitter 110 only when the correspondence between both is confirmed.
　ＨＤＭＩ送信機１１０は、ケーブル１３０からＨＰＤ信号（接続検知信号）を受信するとき、一定期間以内に、自身の＋５Ｖ電源ラインに、小振幅の信号を重畳してケーブル１３０に送信する。重畳される信号は＋５Ｖ電源ラインのＤＣ規定である４．８Ｖ～５．３Ｖを超えないようにされる。この実施の形態において、＋５Ｖ電源ラインに重畳される信号は、規定値以上の電流消費を許可する許可信号とされる。 When receiving an HPD signal (connection detection signal) from the cable 130, the HDMI transmitter 110 superimposes a small amplitude signal on its +5 V power supply line and transmits the signal to the cable 130 within a certain period. The superimposed signal is made not to exceed 4.8 V to 5.3 V which is the DC specification of the +5 V power supply line. In this embodiment, the signal superimposed on the +5 V power supply line is a permission signal for permitting current consumption equal to or more than a specified value.
　図２は、＋５Ｖ電源ラインでの信号重畳回路の一例を示している。ＨＤＭＩ送信機１１０には、５Ｖ供給回路１１１と、送信信号重畳回路１１２が存在する。また、例えば、ケーブル１３０の能動素子１３１は、重畳信号受信回路１３３を持っている。 FIG. 2 shows an example of a signal superposition circuit in the +5 V power supply line. The HDMI transmitter 110 includes a 5 V supply circuit 111 and a transmission signal superimposing circuit 112. Also, for example, the active element 131 of the cable 130 has the superimposed signal reception circuit 133.
　また、重畳される信号は、例えば、開始ビット、オペランド、終了ビットからなる信号列となっており、受信側は開始ビットから通信タイミングを認知し、オペランドの内容を受信する方式となっている。安定受信を目的として、同信号を複数回送信しても構わない。図３は、信号が重畳された＋５Ｖ電源ラインの信号例を示している。 Further, the signal to be superimposed is, for example, a signal sequence including a start bit, an operand, and an end bit, and the receiving side recognizes the communication timing from the start bit and receives the contents of the operand. The same signal may be transmitted multiple times for the purpose of stable reception. FIG. 3 shows a signal example of the +5 V power supply line on which the signal is superimposed.
　ケーブル１３０は、＋５Ｖ電源ライン上の重畳信号（許可信号）を受信すると、ＨＤＭＩ送信機１１０からの電流消費が許可されたと判断して、自身の能動素子１３１を動作させるための電源をＨＤＭＩ送信機１１０から獲得する。ここで、ケーブル１３０は、許可判断の前には、規定値以上の電流消費を行わないように、重畳信号の受信を行わなければならない。 When the cable 130 receives the superimposed signal (permission signal) on the +5 V power supply line, it determines that the current consumption from the HDMI transmitter 110 is permitted, and the power supply for operating its own active element 131 is an HDMI transmitter. Earn from 110. Here, prior to the permission determination, the cable 130 must receive the superimposed signal so as not to consume current more than a specified value.
　図４は、ＨＤＭＩ送信機１１０の制御処理フローを示している。ＨＤＭＩ送信機１１０は、ステップＳＴ１において、制御処理を開始する。次に、ＨＤＭＩ送信機１１０は、ステップＳＴ２において、＋５Ｖ電源ラインで５Ｖ電源を送信し、その後、ステップＳＴ３において、ケーブル１３０からＨＰＤラインを通じて接続検知信号を受信する。 FIG. 4 shows a control processing flow of the HDMI transmitter 110. The HDMI transmitter 110 starts control processing in step ST1. Next, the HDMI transmitter 110 transmits 5V power on the + 5V power supply line in step ST2, and then receives a connection detection signal from the cable 130 through the HPD line in step ST3.
　次に、ＨＤＭＩ送信機１１０は、ステップＳＴ４において、＋５Ｖ電源ラインに許可コマンドの信号を重畳してケーブル１３０に送信する。次に、ＨＤＭＩ送信機１１０は、ステップＳＴ５において、ケーブル１３０から受託コマンド（受諾確認信号）を受信する。次に、ＨＤＭＩ送信機１１０は、ステップＳＴ６において、電流消費許可状態、つまりケーブル１３０で規定値以上の電流を消費可能な状態となる。そして、ステップＳＴ７において、一連の制御処理を終了する。 Next, in step ST4, the HDMI transmitter 110 superimposes the signal of the permission command on the +5 V power supply line and transmits it to the cable 130. Next, the HDMI transmitter 110 receives the acceptance command (acceptance confirmation signal) from the cable 130 in step ST5. Next, in step ST6, the HDMI transmitter 110 is in the current consumption enabled state, that is, the state where the cable 130 can consume current of a specified value or more. Then, in step ST7, the series of control processing is ended.
　図５は、ケーブル１３０の制御処理フローを示している。ケーブル１３０は、ステップＳＴ１１において、制御処理を開始する。次に、ケーブル１３０は、ステップＳＴ１２において、＋５Ｖ電源ラインで５Ｖ電源を受信し、その後、ステップＳＴ１３において、ＨＤＭＩ送信機１１０にＨＰＤラインを通じて接続検知信号を送信する。 FIG. 5 shows a control processing flow of the cable 130. The cable 130 starts control processing in step ST11. Next, in step ST12, the cable 130 receives 5V power on the + 5V power supply line, and then transmits a connection detection signal to the HDMI transmitter 110 through the HPD line in step ST13.
　次に、ケーブル１３０は、ステップＳＴ１４において、ＨＤＭＩ送信機１１０から、＋５Ｖ電源ラインに重畳されて送られてくる許可コマンドを受信する。次に、ケーブル１３０は、ステップＳＴ１５において、ＨＤＭＩ送信機１１０に受託コマンド（受諾確認信号）を送信する。次に、ケーブル１３０は、ステップＳＴ１６において、能動素子１３１が動作するように制御し、電力消費を開始する。そして、ケーブル１３０は、ステップＳＴ１７において、一連の制御処理を終了する。 Next, in step ST14, the cable 130 receives, from the HDMI transmitter 110, a permission command transmitted superimposed on the +5 V power supply line. Next, the cable 130 transmits the acceptance command (acceptance confirmation signal) to the HDMI transmitter 110 in step ST15. Next, in step ST16, the cable 130 controls the active element 131 to operate to start power consumption. Then, the cable 130 ends the series of control processing in step ST17.
　なお、図４、図５の制御処理フローでは、ケーブル１３０がＨＤＭＩ送信機１１０に受託コマンド（受託確認信号）を送信するようにされているが、この送信が省略される場合もある。ケーブル１３０が、受託コマンドをＨＤＭＩ送信機１１０に送信する場合、＋５Ｖ電源ラインが未使用であることを検知した後に、この受託コマンドを＋５Ｖ電源ラインに重畳してＨＤＭＩ送信機１１０に送信してもよい。 Although the cable 130 transmits the acceptance command (acceptance confirmation signal) to the HDMI transmitter 110 in the control processing flow of FIGS. 4 and 5, this transmission may be omitted. When the cable 130 transmits the acceptance command to the HDMI transmitter 110, after detecting that the +5 V power supply line is not in use, the reception command may be superimposed on the +5 V power supply line and transmitted to the HDMI transmitter 110. Good.
　また、ケーブル１３０は、この受託コマンドを、＋５Ｖ電源ラインに重畳して送信するのではなく、他の方法、例えばＨＰＤ信号の再有効化やデータラインのバイアス電圧有効化等の手段を用いて実現されてもよい。 Also, the cable 130 is not implemented by transmitting the acceptance command on the +5 V power supply line in a superimposed manner, but is realized using other methods, for example, means such as revalidation of the HPD signal or bias voltage validation of the data line. It may be done.
　図６は、受託コマンドの送信をＨＰＤ信号の再有効化の手段を用いて行う例を示している。この図６において、図１と対応する部分には同一符号を付して示している。この場合、ＨＰＤラインにスイッチ１３５が挿入され、例えば、能動素子１３１により、このスイッチ１３５がオン/オフ制御されることで、受託コマンドがＨＰＤラインに重畳されてＨＤＭＩ送信機１１０に送られる。ＨＤＭＩ送信機１１０の制御部１１６は、ＨＰＤラインから、この受託コマンドを受信する。 FIG. 6 shows an example in which the transmission of the acceptance command is performed using the means of revalidation of the HPD signal. In FIG. 6, parts corresponding to those in FIG. 1 are given the same reference numerals. In this case, the switch 135 is inserted into the HPD line, and the switch 135 is turned on / off by the active element 131, for example, so that the acceptance command is superimposed on the HPD line and sent to the HDMI transmitter 110. The control unit 116 of the HDMI transmitter 110 receives this acceptance command from the HPD line.
　図７は、受託コマンドの送信をデータラインのバイアス電圧有効化の手段を用いて行う例を示している。この図７にいて、図１と対応する部分には同一符号を付して示している。この場合、ＴＭＤＳラインの終端抵抗に繋がるラインにスイッチ１３６，１３７が挿入され、例えば、能動素子１３１により、このスイッチ１３６，１３７がオン/オフ制御されることで、受託コマンドがデータラインに重畳されてＨＤＭＩ送信機１１０に送られる。ＨＤＭＩ送信機１１０の制御部１１６は、データラインから、この受託コマンドを受信する。 FIG. 7 shows an example in which the transmission of the acceptance command is performed using means for enabling the bias voltage of the data line. In FIG. 7, parts corresponding to those in FIG. 1 are given the same reference numerals. In this case, the switches 136 and 137 are inserted in the line connected to the termination resistance of the TMDS line, and the switch 136 and 137 is controlled to be on / off by the active element 131, for example. And sent to the HDMI transmitter 110. The control unit 116 of the HDMI transmitter 110 receives this acceptance command from the data line.
　上述したように図１に示す伝送システム１０において、ＨＤＭＩ送信機１１０は、＋５Ｖ電源ラインに信号（所定情報）を重畳して送信するものである。そのため、ケーブル１３０との間の通信を、ＨＤＭＩ受信機１２０へ影響を与えることなく、実現することが可能となり、能動素子１３１が入ったケーブル１３０とそれへのＨＤＭＩ送信機１１０からの給電など新たな機能を実現することが可能となる。 As described above, in the transmission system 10 shown in FIG. 1, the HDMI transmitter 110 superimposes a signal (predetermined information) on the +5 V power supply line and transmits it. Therefore, communication with the cable 130 can be realized without affecting the HDMI receiver 120, and the cable 130 containing the active element 131 and power feeding from the HDMI transmitter 110 to the cable 130 can be realized. Function can be realized.
　＜２．変形例＞
　なお、上述実施の形態においては、ＨＤＭＩ送信機１１０とケーブル１３０との間の通信の例を説明した。しかし、本技術は、それに限定されるものではなく、ＨＤＭＩ送信機１１０とＨＤＭＩ受信機１２０、あるいはＨＤＭＩ受信機１２０とケーブル１３０との間の通信に使われても構わない。また、重畳される信号の形態は、上述の例に限定されるものではなく、搬送クロック抽出と信号のＤＣバランスを保つための何らかのコーディングなどが施されていても構わない。 <2. Modified example>
In the above embodiment, an example of communication between the HDMI transmitter 110 and the cable 130 has been described. However, the present technology is not limited thereto, and may be used for communication between the HDMI transmitter 110 and the HDMI receiver 120, or the HDMI receiver 120 and the cable 130. Further, the form of the signal to be superimposed is not limited to the above-described example, and any coding for maintaining the carrier clock extraction and the DC balance of the signal may be performed.
　また、上述実施の形態においては、ソース機器とシンク機器をＨＤＭＩケーブルで接続する伝送システムを例にとって説明した。しかし、本技術は、送信装置と受信装置とを“VESA Plug and Display(P&D) Specification”で定義されている仕組みを使うケーブルにも同様に適用可能なため、ＤＶＩ、ＭＨＬ、Ｄｉｓｐｌａｙ　Ｐｏｒｔ等にも適用できる。また、本技術は、ＡＯＣ（アクティブオプティカルケーブル：内部で光ファイバーに変換して長距離を劣化なく伝送するケーブル）やＡＣＣ（アクティブカッパ―ケーブル：内部素子によって波形整形を行うことにより長距離伝送を実現するケーブル）に限らず、無線通信等変換するケーブルに応用することも可能である。 Further, in the above embodiment, the transmission system in which the source device and the sink device are connected by the HDMI cable has been described as an example. However, the present technology is equally applicable to a cable that uses the mechanism defined in the “VESA Plug and Display (P & D) Specification” for the transmitting device and the receiving device, and thus to DVI, MHL, Display Port, etc. Applicable In addition, the present technology realizes long distance transmission by AOC (active optical cable: cable internally converted to optical fiber and transmitting long distance without deterioration) or ACC (active kappa cable: waveform shaping by internal elements) It is also possible to apply to not only the above-mentioned cable) but also a cable for converting wireless communication etc.
　また、本技術は、以下のような構成を取ることもできる。
　（１）映像信号を、複数チャネルで、差動信号により、ケーブルを介して、受信装置に送信する信号送信部と、
　上記ケーブルの所定ラインに所定情報を重畳して送信する情報送信部を備える
　送信装置。
　（２）上記所定ラインは、電源ラインである
　前記（１）に記載の送信装置。
　（３）上記所定情報は、上記電源ラインの規格範囲内で遷移する振幅信号である
　前記（２）に記載の送信装置。
　（４）上記所定情報は、上記ケーブルに規定値以上の電流消費を許可する許可信号である
　前記（１）から（３）のいずれかに記載の送信装置。
　（５）上記所定情報は、開始ビット、オペランドおよび終了ビットからなる信号列である
　前記（１）から（４）のいずれかに記載の送信装置。
　（６）上記情報送信部は、上記所定情報を複数回繰り返し上記所定ラインに重畳する
　前記（１）から（５）のいずれかに記載の送信装置。
　（７）信号送信部が、映像信号を、複数チャネルで、差動信号により、ケーブルを介して、受信装置に送信する信号送信ステップと、
　情報送信部が、上記ケーブルの所定ラインに所定情報を重畳して送信する情報送信ステップを有する
　送信方法。
　（８）映像信号を、複数チャネルで、差動信号により、受信装置に送信する送信装置と上記受信装置との間に配置されるケーブルであって、
　上記ケーブルの所定ラインに重畳されている所定情報を受信する受信部と、
　上記所定情報に基づいた処理を行う処理部を備える
　ケーブル。
　（９）上記所定ラインは、電源ラインである
　前記（８）に記載のケーブル。
　（１０）上記所定情報は、上記電源ラインの規格範囲内で遷移する振幅信号である
　前記（９）に記載のケーブル。
　（１１）上記所定情報は、規定値以上の電流消費を許可する許可信号である
　前記（８）から（１０）のいずれかに記載のケーブル。
　（１２）上記規定値以上の電流を消費する能動素子を備え、
　上記処理部は、上記許可信号を受信したとき、上記能動素子が動作するように制御する
　前記（１１）に記載のケーブル。
　（１３）映像信号を、複数チャネルで、差動信号により、受信装置に送信する送信装置と上記受信装置との間に配置されるケーブルの処理方法であって、
　受信部が、上記ケーブルの所定ラインに重畳されている所定情報を受信する受信ステップと、
　処理部が、上記所定情報に基づいた処理を行う処理ステップを有する
　ケーブルの処理方法。
　（１４）映像信号を、複数チャネルで、差動信号により、受信装置に送信する送信装置と上記受信装置との間に配置されるケーブルであって、
　上記ケーブルの所定ラインに所定情報を重畳して送信する情報送信部を備える
　ケーブル。
　（１５）上記所定ラインは、電源ラインである
　前記（１４）に記載のケーブル。
　（１６）上記所定情報は、上記送信装置より送られてくる規定値以上の電流消費を許可する許可信号に対する受諾確認信号である
　前記（１４）または（１５）に記載のケーブル。
　（１７）上記所定ラインは、接続確認ラインであり、
　上記情報送信部は、上記接続確認信号を再有効化することで上記受諾確認信号を送信する
　前記（１６）に記載のケーブル。
　（１８）上記所定ラインは、データラインであり、
　上記情報送信部は、上記データラインのバイアス電圧を有効化することで上記受諾確認信号を送信する
　前記（１６）に記載のケーブル。
　（１９）映像信号を、複数チャネルで、差動信号により、ケーブルを介して、送信装置から受信する信号受信部と、
　上記ケーブルの所定ラインに重畳されて送られてくる所定情報を受信する情報受信部と、
　上記所定情報に基づいた処理をする処理部を備える
　受信装置。
　（２０）信号受信部が、映像信号を、複数チャネルで、差動信号により、ケーブルを介して、送信装置から受信する信号受信ステップと、
　情報受信部が、上記ケーブルの所定ラインに重畳されて送られてくる所定情報を受信する情報受信ステップと、
　処理部が、上記所定情報に基づいた処理をする処理ステップを有する
　受信方法。 Furthermore, the present technology can also be configured as follows.
(1) A signal transmission unit for transmitting video signals to a receiving apparatus by a plurality of channels and differential signals via a cable;
A transmitter comprising: an information transmitter configured to transmit predetermined information superimposed on a predetermined line of the cable.
(2) The transmission apparatus according to (1), wherein the predetermined line is a power supply line.
(3) The transmission apparatus according to (2), wherein the predetermined information is an amplitude signal that transitions within a standard range of the power supply line.
(4) The transmission apparatus according to any one of (1) to (3), wherein the predetermined information is a permission signal for permitting the cable to consume current equal to or greater than a specified value.
(5) The transmission apparatus according to any one of (1) to (4), wherein the predetermined information is a signal sequence including a start bit, an operand, and an end bit.
(6) The transmission apparatus according to any one of (1) to (5), wherein the information transmission unit repeatedly superimposes the predetermined information on the predetermined line.
(7) a signal transmission step in which the signal transmission unit transmits the video signal to the reception device through a cable by differential signals and by a plurality of channels.
A transmission method, comprising: an information transmission step in which an information transmission unit superimposes and transmits predetermined information on a predetermined line of the cable.
(8) A cable disposed between a transmitting device for transmitting video signals to a receiving device by a plurality of channels and differential signals, and the receiving device,
A receiver for receiving predetermined information superimposed on a predetermined line of the cable;
A cable comprising a processing unit that performs processing based on the predetermined information.
(9) The cable according to (8), wherein the predetermined line is a power supply line.
(10) The cable according to (9), wherein the predetermined information is an amplitude signal that transitions within a standard range of the power supply line.
(11) The cable according to any one of (8) to (10), wherein the predetermined information is a permission signal for permitting current consumption equal to or more than a specified value.
(12) It has an active element which consumes a current equal to or more than the above specified value,
The cable according to (11), wherein the processing unit controls the active element to operate when the permission signal is received.
(13) A method of processing a cable disposed between a transmitting device that transmits video signals to a receiving device by differential signals using a plurality of channels and the receiving device,
A receiving step in which a receiving unit receives predetermined information superimposed on a predetermined line of the cable;
A processing method of a cable, the processing part having a processing step which performs processing based on the above-mentioned predetermined information.
(14) A cable disposed between a transmitting device for transmitting video signals to a receiving device by a plurality of channels and differential signals, and the receiving device,
A cable comprising: an information transmission unit that superimposes and transmits predetermined information on a predetermined line of the cable.
(15) The cable according to (14), wherein the predetermined line is a power supply line.
(16) The cable according to (14) or (15), wherein the predetermined information is an acceptance confirmation signal for a permission signal for permitting current consumption equal to or more than a specified value transmitted from the transmission device.
(17) The predetermined line is a connection confirmation line,
The cable according to (16), wherein the information transmission unit transmits the acceptance confirmation signal by reactivating the connection confirmation signal.
(18) The predetermined line is a data line,
The cable according to (16), wherein the information transmission unit transmits the acceptance confirmation signal by validating a bias voltage of the data line.
(19) A signal receiving unit for receiving video signals from a transmitting apparatus by a plurality of channels, by differential signals, and through a cable
An information receiving unit for receiving predetermined information transmitted superimposed on a predetermined line of the cable;
A processing unit that performs processing based on the predetermined information;
(20) a signal receiving step in which the signal receiving unit receives video signals from the transmitting apparatus via a cable by differential signals and by a plurality of channels;
An information receiving step in which the information receiving unit receives predetermined information transmitted superimposed on a predetermined line of the cable;
A processing step of processing the processing unit based on the predetermined information.
　１０・・・伝送システム
　１１０・・・ＨＤＭＩ送信機
　１１１・・・５Ｖ供給回路
　１１２・・・送信信号重畳回路
　１１６・・・制御部
　１２０・・・ＨＤＭＩ受信機
　１３０・・・ＨＤＭＩケーブル
　１３１・・・能動素子
　１３３・・・重畳信号受信回路
　１３５～１３７・・・スイッチ DESCRIPTION OF SYMBOLS 10 ... Transmission system 110 ... HDMI transmitter 111 ... 5V supply circuit 112 ... Transmission signal superposing circuit 116 ... Control part 120 ... HDMI receiver 130 ... HDMI cable 131 .. · Active element 133 ··· Superposed signal reception circuit 135-137 · · · Switch

Claims (20)

  1. 　映像信号を、複数チャネルで、差動信号により、ケーブルを介して、受信装置に送信する信号送信部と、
    　上記ケーブルの所定ラインに所定情報を重畳して送信する情報送信部を備える
    　送信装置。     A signal transmission unit that transmits video signals to a receiving apparatus by a plurality of channels, by differential signals, and through a cable;
    A transmitter comprising: an information transmitter configured to transmit predetermined information superimposed on a predetermined line of the cable.
  2. 　上記所定ラインは、電源ラインである
    　請求項１に記載の送信装置。     The transmission device according to claim 1, wherein the predetermined line is a power supply line.
  3. 　上記所定情報は、上記電源ラインの規格範囲内で遷移する振幅信号である
    　請求項２に記載の送信装置。     The transmission device according to claim 2, wherein the predetermined information is an amplitude signal that transitions within a standard range of the power supply line.
  4. 　上記所定情報は、上記ケーブルに規定値以上の電流消費を許可する許可信号である
    　請求項１に記載の送信装置。     The transmission device according to claim 1, wherein the predetermined information is a permission signal for permitting the cable to consume current equal to or more than a specified value.
  5. 　上記所定情報は、開始ビット、オペランドおよび終了ビットからなる信号列である
    　請求項１に記載の送信装置。     The transmitting apparatus according to claim 1, wherein the predetermined information is a signal sequence including a start bit, an operand and an end bit.
  6. 　上記情報送信部は、上記所定情報を複数回繰り返し上記所定ラインに重畳する
    　請求項１に記載に送信装置。     The transmission apparatus according to claim 1, wherein the information transmission unit repeatedly superimposes the predetermined information on the predetermined line a plurality of times.
  7. 　信号送信部が、映像信号を、複数チャネルで、差動信号により、ケーブルを介して、受信装置に送信する信号送信ステップと、
    　情報送信部が、上記ケーブルの所定ラインに所定情報を重畳して送信する情報送信ステップを有する
    　送信方法。     A signal transmission step in which the signal transmission unit transmits the video signal to the receiving apparatus via a cable by differential signals and a plurality of channels.
    A transmission method, comprising: an information transmission step in which an information transmission unit superimposes and transmits predetermined information on a predetermined line of the cable.
  8. 　映像信号を、複数チャネルで、差動信号により、受信装置に送信する送信装置と上記受信装置との間に配置されるケーブルであって、
    　上記ケーブルの所定ラインに重畳されている所定情報を受信する受信部と、
    　上記所定情報に基づいた処理を行う処理部を備える
    　ケーブル。     A cable disposed between a transmitting device that transmits video signals to a receiving device by a plurality of channels and differential signals, and the receiving device,
    A receiver for receiving predetermined information superimposed on a predetermined line of the cable;
    A cable comprising a processing unit that performs processing based on the predetermined information.
  9. 　上記所定ラインは、電源ラインである
    　請求項８に記載のケーブル。     The cable according to claim 8, wherein the predetermined line is a power supply line.
  10. 　上記所定情報は、上記電源ラインの規格範囲内で遷移する振幅信号である
    　請求項９に記載のケーブル。     The cable according to claim 9, wherein the predetermined information is an amplitude signal that transitions within a standard range of the power supply line.
  11. 　上記所定情報は、規定値以上の電流消費を許可する許可信号である
    　請求項８に記載のケーブル。     The cable according to claim 8, wherein the predetermined information is a permission signal for permitting current consumption equal to or more than a specified value.
  12. 　上記規定値以上の電流を消費する能動素子を備え、
    　上記処理部は、上記許可信号を受信したとき、上記能動素子が動作するように制御する
    　請求項１１に記載のケーブル。     It has an active element that consumes current above the specified value,
    The cable according to claim 11, wherein the processing unit controls the active element to operate when the permission signal is received.
  13. 　映像信号を、複数チャネルで、差動信号により、受信装置に送信する送信装置と上記受信装置との間に配置されるケーブルの処理方法であって、
    　受信部が、上記ケーブルの所定ラインに重畳されている所定情報を受信する受信ステップと、
    　処理部が、上記所定情報に基づいた処理を行う処理ステップを有する
    　ケーブルの処理方法。     A method of processing a cable disposed between a transmitting device for transmitting video signals to a receiving device by a plurality of channels and differential signals, and the receiving device,
    A receiving step in which a receiving unit receives predetermined information superimposed on a predetermined line of the cable;
    A processing method of a cable, the processing part having a processing step which performs processing based on the above-mentioned predetermined information.
  14. 　映像信号を、複数チャネルで、差動信号により、受信装置に送信する送信装置と上記受信装置との間に配置されるケーブルであって、
    　上記ケーブルの所定ラインに所定情報を重畳して送信する情報送信部を備える
    　ケーブル。     A cable disposed between a transmitting device that transmits video signals to a receiving device by a plurality of channels and differential signals, and the receiving device,
    A cable comprising: an information transmission unit that superimposes and transmits predetermined information on a predetermined line of the cable.
  15. 　上記所定ラインは、電源ラインである
    　請求項１４に記載のケーブル。     The cable according to claim 14, wherein the predetermined line is a power supply line.
  16. 　上記所定情報は、上記送信装置より送られてくる規定値以上の電流消費を許可する許可信号に対する受諾確認信号である
    　請求項１４に記載のケーブル。     The cable according to claim 14, wherein the predetermined information is an acceptance confirmation signal for a permission signal for permitting current consumption equal to or more than a specified value, which is sent from the transmission device.
  17. 　上記所定ラインは、接続確認ラインであり、
    　上記情報送信部は、上記接続確認信号を再有効化することで上記受諾確認信号を送信する
    　請求項１６に記載のケーブル。     The above predetermined line is a connection confirmation line,
    The cable according to claim 16, wherein the information transmission unit transmits the acceptance confirmation signal by re-enabling the connection confirmation signal.
  18. 　上記所定ラインは、データラインであり、
    　上記情報送信部は、上記データラインのバイアス電圧を有効化することで上記受諾確認信号を送信する
    　請求項１６に記載のケーブル。     The predetermined line is a data line,
    The cable according to claim 16, wherein the information transmission unit transmits the acceptance confirmation signal by validating a bias voltage of the data line.
  19. 　映像信号を、複数チャネルで、差動信号により、ケーブルを介して、送信装置から受信する信号受信部と、
    　上記ケーブルの所定ラインに重畳されて送られてくる所定情報を受信する情報受信部と、
    　上記所定情報に基づいた処理をする処理部を備える
    　受信装置。     A signal reception unit that receives video signals from a transmitter by a plurality of channels, by differential signals, and via a cable;
    An information receiving unit for receiving predetermined information transmitted superimposed on a predetermined line of the cable;
    A processing unit that performs processing based on the predetermined information;
  20. 　信号受信部が、映像信号を、複数チャネルで、差動信号により、ケーブルを介して、送信装置から受信する信号受信ステップと、
    　情報受信部が、上記ケーブルの所定ラインに重畳されて送られてくる所定情報を受信する情報受信ステップと、
    　処理部が、上記所定情報に基づいた処理をする処理ステップを有する
    　受信方法。     A signal reception step in which the signal reception unit receives video signals from the transmission apparatus by a plurality of channels, by differential signals, and via a cable;
    An information receiving step in which the information receiving unit receives predetermined information transmitted superimposed on a predetermined line of the cable;
    A processing step of processing the processing unit based on the predetermined information.
PCT/JP2018/026837 2017-07-24 2018-07-18 Transmission device, transmission method, cable, cable processing method, reception device and reception method WO2019021900A1 (en)

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JPH0738476A (en) * 1993-07-20 1995-02-07 Csk Corp Electronic circuit module
JPH09160679A (en) * 1995-12-11 1997-06-20 Adtex:Kk Signal superimposing power supply device between master unit and slave unit and bidirectional signal transmission device thereof
JPH11235018A (en) * 1998-02-17 1999-08-27 Nec Corp Card unit device
JP2012124808A (en) * 2010-12-10 2012-06-28 Toshiba Corp Bidirectional communication interface device and bidirectional communication interface system
JP2015222960A (en) * 2015-07-01 2015-12-10 ソニー株式会社 Electronic apparatus and control method for electronic apparatus
WO2015190153A1 (en) * 2014-06-12 2015-12-17 ソニー株式会社 Interface circuit and information processing system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0738476A (en) * 1993-07-20 1995-02-07 Csk Corp Electronic circuit module
JPH09160679A (en) * 1995-12-11 1997-06-20 Adtex:Kk Signal superimposing power supply device between master unit and slave unit and bidirectional signal transmission device thereof
JPH11235018A (en) * 1998-02-17 1999-08-27 Nec Corp Card unit device
JP2012124808A (en) * 2010-12-10 2012-06-28 Toshiba Corp Bidirectional communication interface device and bidirectional communication interface system
WO2015190153A1 (en) * 2014-06-12 2015-12-17 ソニー株式会社 Interface circuit and information processing system
JP2015222960A (en) * 2015-07-01 2015-12-10 ソニー株式会社 Electronic apparatus and control method for electronic apparatus

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