WO2018131232A1 - Dispositif de commande d'émission, dispositif de commande de réception et système de commande d'émission/réception - Google Patents

Dispositif de commande d'émission, dispositif de commande de réception et système de commande d'émission/réception Download PDF

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Publication number
WO2018131232A1
WO2018131232A1 PCT/JP2017/036594 JP2017036594W WO2018131232A1 WO 2018131232 A1 WO2018131232 A1 WO 2018131232A1 JP 2017036594 W JP2017036594 W JP 2017036594W WO 2018131232 A1 WO2018131232 A1 WO 2018131232A1
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WIPO (PCT)
Prior art keywords
transmission
lane
unit
pixel data
transmission frame
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PCT/JP2017/036594
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English (en)
Japanese (ja)
Inventor
森　敦司
俊久 百代
Original Assignee
ソニーセミコンダクタソリューションズ株式会社
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Priority to JP2018561806A priority Critical patent/JP6993990B2/ja
Publication of WO2018131232A1 publication Critical patent/WO2018131232A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home

Definitions

  • the present disclosure relates to a transmission control device, a reception control device, and a transmission / reception control system.
  • HDMI High-Definition Multimedia Interface
  • DP Display Port
  • a transmission frame generation unit that generates a transmission frame based on a plurality of pixel data included in a video signal, and a lane in which each of the plurality of pixel data is transmitted after a predetermined change timing is changed. And a lane changing unit.
  • the signal acquisition unit when a transmission frame generated based on a plurality of pixel data included in a video signal is received, the signal acquisition unit includes the signal acquisition unit that acquires the plurality of pixel data from the transmission frame.
  • the reception control device is provided that obtains the plurality of pixel data in which the lane transmitted after the predetermined change timing is detected is changed.
  • a transmission frame generation unit that generates a transmission frame based on a plurality of pixel data included in a video signal, and a lane in which each of the plurality of pixel data is transmitted after a predetermined change timing is changed.
  • a transmission control device comprising a lane changing unit, and a signal acquisition unit that acquires the plurality of pixel data from the transmission frame when the transmission frame is received, wherein the signal acquisition unit is transmitted.
  • a transmission / reception control system including a reception control device that acquires the plurality of pixel data whose lanes are changed.
  • the transmission state of a lane in which a part or all of the video signal is transmitted among a plurality of lanes deteriorates, the visibility of the video displayed on the reception side is improved.
  • a technology capable of being provided is provided. Note that the above effects are not necessarily limited, and any of the effects shown in the present specification, or other effects that can be grasped from the present specification, together with or in place of the above effects. May be played.
  • HDMI, DP, and the like are known as techniques for transmitting a video signal (Video signal) using a plurality of lanes.
  • pixel data is assigned to one of a plurality of lanes for each color information, and pixel data is transmitted based on the lane assignment for the color information.
  • coordinates are assigned to any of a plurality of lanes, and pixel data is transmitted based on the assignment of lanes to the coordinates.
  • FIG. 1 is a diagram illustrating an example of a configuration of a signal transmission system 1A according to the first embodiment.
  • the signal transmission system 1A includes a transmission device 10A and a reception device 20A.
  • the transmission device 10 ⁇ / b> A and the reception device 20 ⁇ / b> A are connected via a transmission path 30.
  • a video signal is handled as a transmission signal from the transmission device 10A to the reception device 20A
  • a transmission signal is transmitted by an optical signal
  • the transmission signal may be transmitted / received not by an optical signal but by another signal such as an electrical signal.
  • the transmitting apparatus 10A can function as a “transmission control apparatus”.
  • the receiving device 20A can function as a “reception control device”.
  • the signal transmission system 1A can function as a “transmission / reception control system”.
  • the transmitting apparatus 10A divides the video signal (Video signal) into a plurality of signals (hereinafter also referred to as “divided signals”), and transmits the plurality of divided signals based on the lane allocation for each of the plurality of divided signals. As will be described later, the video signal may be transmitted by one lane without being divided into a plurality of divided signals by the transmission device 10A.
  • the video signal 101 is input to the transmission device 10A.
  • the video signal 101 is composed of a plurality of video frames (images) along a time series.
  • the transmitting apparatus 10A includes an image dividing unit (lane changing unit) 102 and transmission frame transmitting units 103-1 to 103-M.
  • the image dividing unit 102 divides the video signal to obtain a plurality of divided signals.
  • the maximum number of divisions may be M (M is an integer of 2 or more), which is the number of lanes 303. That is, all of the M lanes 303 may be used for transmission of video signals, or only a part may be used for transmission of video signals (an empty lane may exist).
  • M is an integer of 2 or more
  • the division number of the video signal is “4” will be mainly described, but the division number of the video signal is not limited.
  • the unit of division is not limited to the coordinate unit, and may be a block unit constituted by a plurality of coordinates.
  • the image dividing unit 102 specifies a lane to which each of a plurality of pixel data included in the video signal is transmitted before a predetermined change timing.
  • a predetermined change timing is not limited.
  • the image dividing unit 102 specifies the lane to which each of the plurality of pixel data is transmitted based on the lane assignment to each coordinate of the video signal before the change timing.
  • Each of the plurality of pixel data included in the video signal is output to transmission frame transmission units 103-1 to 103-4 connected to the lane specified by the image division unit 102 among the transmission frame transmission units 103-1 to 103-M. Is done. Further, the image dividing unit 102 changes the lane assignment to each coordinate in the video signal after a predetermined change timing. When the lane assignment for each coordinate is changed, in each of the transmission frame transmission units 103-1 to 103-4, a transmission frame is generated by the transmission frame generation unit 1032 according to the changed assignment, and the transmission unit 1035 transmits the transmission frame. Is sent.
  • the transmission frame transmitting unit 103-1 generates a transmission frame based on the pixel data group (divided signal) input from the image dividing unit 102. Then, the transmission frame transmission unit 103-1 transmits the generated transmission frame to the lane 303-1 connected to itself.
  • Each of the transmission frame transmitting units 103-2 to 103-4 generates a transmission frame based on the pixel data group (divided signal) input from the image dividing unit 102, similarly to the transmission frame transmitting unit 103-1.
  • the transmitted frame is transmitted to lanes 303-2 to 303-4 connected to itself.
  • FIG. 2 is a diagram illustrating an example of a detailed configuration of the transmission frame transmission unit 103 according to the first embodiment.
  • the input port 1031 is a port to which a pixel data group (divided signal) is input.
  • the transmission frame transmission unit 103 includes a transmission frame generation unit 1032, an encoding unit 1033, a P / S (parallel serial conversion unit) 1034, and a transmission unit 1035. Below, the function of each of these functional blocks will be described.
  • the transmission frame generation unit 1032 When a pixel data group (division signal) is input from the input port 1031, the transmission frame generation unit 1032 generates a transmission frame by framing the pixel data group (division signal).
  • the framing may be done in any way.
  • the transmission frame generation unit 1032 may perform framing by attaching a frame start identifier indicating the head of the transmission frame to the pixel data group (divided signal).
  • At least one of predetermined codes (hereinafter also referred to as “special data”) that does not exist in the video signal is assigned to the frame start identifier.
  • the special data depends on the encoding of data transmitted / received through the lane 303.
  • a K code may be assigned to the special data.
  • data in which N bytes of K code (0xBC) called K28.5 are continuous may be assigned to the frame start identifier.
  • the encoding unit 1033 encodes the pixel data group (divided signal). Specifically, the encoding unit 1033 performs 8b / 10b encoding on the pixel data group (divided signal). At this time, the encoding unit 1033 may replace the frame start identifier with the corresponding special data in the pixel data group (divided signal) and replace data other than the frame start identifier with 10-bit unit data.
  • P / S 1034 converts the encoded pixel data group (divided signal) from parallel data to serial data in a format suitable for high-speed transmission.
  • the transmission unit 1035 transmits a transmission frame.
  • the transmission frame is output from the output terminal 1036.
  • the transmission unit 1035 includes an LDD (laser diode driver) and an LD (laser diode).
  • the LDD drives the LD
  • the LD outputs the transmission frame input from the LDD from the output terminal 1036.
  • the lane 303 is configured by an optical fiber
  • the LD converts the transmission frame into an optical signal and then transmits the optical signal to the receiving device 20A.
  • the signal type of the transmission frame is not limited.
  • the transmission device 10A may transmit a transmission frame to the reception device 20A by an electrical signal.
  • the transmission path 30 includes lanes 303-1 to 303-M (M is an integer of 2 or more).
  • M is an integer of 2 or more.
  • the number of lanes 303 is shown as M, but the number of lanes 303 is not particularly limited as long as it is plural.
  • the receiving device 20A receives a plurality of divided signals from the lanes 303-1 to 303-M, and generates a video signal based on the received plurality of divided signals.
  • the receiving apparatus 20A includes transmission frame receiving units 203-1 to 203-M and an image synthesizing unit 202. Each of the transmission frame receiving units 203-1 to 203-M is connected to a corresponding lane 303-1 to 303-M. As described above, in the present embodiment, the case where the number of divisions of the video signal is “4” will be mainly described.
  • the transmission frame receiving unit 203-1 receives the transmission frame from the lane 303-1, and acquires a pixel data group (divided signal) from the received transmission frame.
  • the transmission frame receiving units 203-2 to 203-4 also receive the transmission frame from the lanes 303-2 to 303-4, and acquire pixel data groups (divided signals) from the transmission frame.
  • FIG. 3 is a diagram illustrating an example of a detailed configuration of the transmission frame receiving unit 203 according to the first embodiment.
  • the input port 2036 is a port to which a transmission frame is input.
  • a transmission frame input from the input port 2036 is input to the transmission frame receiving unit 203.
  • the transmission frame reception unit 203 includes a reception unit 2035, an S / P (serial / parallel conversion unit) 2034, a decoding unit 2033, and a signal acquisition unit 2032.
  • S / P serial / parallel conversion unit
  • the reception unit 2035 receives the transmission frame.
  • the receiving unit 2035 includes a PD (photo detector) and an amplifier.
  • the PD receives the transmission frame transmitted by the optical signal from the transmitter 10A and converts it into an electrical signal.
  • the lane 303 is configured by an optical fiber, and the PD receives a transmission frame and converts it into an electrical signal.
  • the transmission is performed from the transmission device 10A to the reception device 20A.
  • the type of signal to be performed is not limited.
  • the receiving device 20A may receive a transmission frame from the transmitting device 10A by an electrical signal.
  • the amplifier amplifies the transmission frame as an electrical signal output from the PD, and outputs the amplified transmission frame to the S / P 2034.
  • the amplifier may perform amplitude amplification on the voltage signal after obtaining a voltage signal by performing impedance conversion on the current signal.
  • S / P 2034 converts the format of the transmission frame from serial data to parallel data.
  • the decoding unit 2033 decodes the transmission frame converted into parallel data. Specifically, the decoding unit 2033 may perform 8b / 10b decoding on the transmission frame. For example, the decoding unit 2033 may replace the 10-bit special data corresponding to the frame start identifier in the transmission frame with the frame start identifier. On the other hand, the decoding unit 2033 may replace the remaining data in the transmission frame with 8-bit data.
  • the signal acquisition unit 2032 Since the input transmission frame is framed, the signal acquisition unit 2032 obtains a pixel data group (divided signal) by canceling this framed. More specifically, the signal acquisition unit 2032 detects the position of the frame start identifier replaced from the special code as the start position of the transmission frame. The signal acquisition unit 2032 obtains a pixel data group (divided signal) based on the position of the frame start identifier. The pixel data group (divided signal) obtained by the signal acquisition unit 2032 is output from the output port 2031.
  • the image synthesis unit 202 generates a video signal by synthesizing pixel data groups (divided signals) output from the transmission frame reception units 203-1 to 203-4. That is, the image composition unit 202 corresponds to the image dividing unit 102 in the transmission device 10A.
  • the image composition unit 202 identifies the lane from which each of the plurality of pixel data is acquired based on the lane assignment to each coordinate in the video signal before a predetermined change timing.
  • the lane assignment for each coordinate in the video signal is the same between the image composition unit 202 and the image division unit 102 in the transmission apparatus 10A.
  • the image combining unit 202 generates a video signal by combining a plurality of pixel data according to the specified lane.
  • the video signal 201 generated by the image composition unit 202 is output to a predetermined output destination.
  • the image composition unit 202 changes the lane assignment for each coordinate in the video signal after the change timing.
  • the lane assignment after the change is the same between the image composition unit 202 and the image dividing unit 102 in the transmission apparatus 10A. Therefore, the assignment change by the image dividing unit 102 and the assignment change by the image composition unit 202 correspond to each other.
  • the transmission frame reception units 203-1 to 203-4 receive the transmission frame by the reception unit 2035 according to the changed assignment, and the signal acquisition unit 2032 receives the transmission frame from the transmission frame.
  • a pixel data group (divided signal) is acquired.
  • the image synthesis unit 202 identifies a lane to which each of the plurality of divided signals is transmitted according to the changed assignment, and generates a video signal by synthesizing the plurality of divided signals according to the identified lane.
  • FIG. 4 is a diagram illustrating a configuration example of a video frame included in a video signal.
  • the video frame forms a rectangular shape in which X pixel data in the horizontal direction and Y pixel data in the vertical direction are arranged. Therefore, pixel data exists corresponding to each coordinate of the video frame.
  • P (4, 5) indicates pixel data whose X coordinate is “4” and Y coordinate is “5”.
  • the pixel data is composed of color information such as RGB.
  • FIG. 5 is a diagram showing an example of a pixel data group (divided signal) transmitted through each of lanes # 1 to # 4 in time series.
  • transmission of the first video frame is started (first video frame start position 3031).
  • lane # 1 is assigned to P (1,1)
  • lane # 2 is assigned to P (2,1)
  • lane # 3 is assigned to P (3,1)
  • P (4,1 Lane # 4 is assigned to.
  • the image dividing unit 102 specifies a lane to which each of a plurality of pixel data is transmitted according to the assignment.
  • Each of the plurality of pixel data is transmitted to the lane connected to the lane specified by the image dividing unit 102.
  • Lane # 4 is assigned to.
  • the image dividing unit 102 specifies a lane to which each of a plurality of pixel data is transmitted according to the assignment. Each of the plurality of pixel data is transmitted to the lane connected to the lane specified by the image dividing unit 102.
  • the first line of the first video frame is sequentially transmitted in the horizontal direction.
  • first line end position 3032 When transmission of the first line of the first video frame is completed (first line end position 3032), the H blank section is transmitted, and when transmission of the H blank section is completed (H blank section end position 3033), the first sheet Transmission of the second line of the video frame is started.
  • lane # 1 is assigned to P (1,2)
  • lane # 2 is assigned to P (2,2)
  • lane # 3 is assigned to P (3,2)
  • P (4,2 Lane # 4 is assigned to.
  • the image dividing unit 102 specifies a lane to which each of a plurality of pixel data is transmitted according to the assignment. Each of the plurality of pixel data is transmitted to the lane connected to the lane specified by the image dividing unit 102.
  • the second line of the first video frame is transmitted sequentially in the horizontal direction.
  • the V blank section is transmitted and the V blank section is transmitted.
  • Transmission of the second video frame is started (second video frame start position 3035).
  • the image dividing unit 102 changes the lane assignment for each coordinate in the video signal.
  • lane # 1 is assigned to P (4,1)
  • lane # 2 is assigned to P (1,1)
  • lane # 3 is assigned to P (2,1)
  • Lane # 4 is assigned to P (3, 1).
  • the assignment for P (1,1) is changed from lane # 1 to lane # 2
  • the assignment for P (2,1) is changed from lane # 2 to lane # 3
  • P (3,1) The assignment for is changed from lane # 3 to lane # 4
  • the assignment for P (4,1) is changed from lane # 4 to lane # 1.
  • the assignment to P (1,1) is changed from lane # 2 to lane # 3, and the assignment to P (2,1) is changed to lane #. 3 to lane # 4, the assignment to P (3,1) is changed from lane # 4 to lane # 1, and the assignment to P (4,1) is changed from lane # 1 to lane # 2.
  • the image dividing unit 102 changes the lane assignment to each coordinate in the video signal every time a video frame is transmitted as an example.
  • the image dividing unit 102 changes the lane assignment for each coordinate in the video signal after a predetermined change timing.
  • the coordinates of the pixel data that is not normally displayed change because the coordinates corresponding to the lane in which the transmission state deteriorates change. To do. Therefore, according to the first embodiment of the present disclosure, it is possible to improve the visibility of the video displayed on the reception side even if the transmission state of the lane in which the video signal is transmitted among the plurality of lanes deteriorates. It becomes possible.
  • the change timing is not limited to this.
  • the change timing may be one or more times during transmission of a transmission frame, or may be every time transmission of a plurality of transmission frames ends.
  • the video signal may be transmitted through one lane without being divided into a plurality of divided signals.
  • the image dividing unit 102 specifies the lane to which the entire video signal is transmitted based on the lane allocation to the entire video signal before the change timing. Then, the image dividing unit 102 changes the lane in which the entire video signal is transmitted after the change timing.
  • FIG. 6 is a diagram illustrating an example of a configuration of a signal transmission system 1B according to the second embodiment. As illustrated in FIG. 6, the signal transmission system 1B includes a transmission device 10B and a reception device 20B.
  • the transmission device 10B according to the second embodiment is mainly different from the transmission device 10A according to the first embodiment in that it includes a transmission control unit 107 and a transmission information generation unit 108.
  • the receiving device 20B according to the second embodiment is mainly different from the receiving device 20A according to the first embodiment in that the receiving device 20B includes a reception control unit 207 and a transmission information detection unit 208.
  • a configuration different from the first embodiment will be mainly described.
  • the transmission control unit 107 controls the image division unit 102 and the transmission information generation unit 108 based on the input frame synchronization signal. More specifically, the transmission control unit 107 specifies control information including coordinates in the video signal and lanes assigned to the coordinates based on the input frame synchronization signal, and outputs the control information to the image dividing unit 102 To do. Further, the transmission control unit 107 outputs control information to the transmission information generation unit 108.
  • the transmission information generation unit 108 generates transmission information according to the control information, and outputs the transmission information to each of the transmission frame transmission units 103-1 to 103-4.
  • the transmission information is information obtained by converting the control information into a format that matches the transmission frame.
  • the format is not limited, and the transmission information and control information may be the same.
  • the image dividing unit 102 changes the lane assignment to the coordinates according to the control information input from the transmission control unit 107.
  • the transmission frame generating unit 1032 inserts transmission information input from the transmission control unit 107 into the transmission frame.
  • the transmission frame generation unit 1032 inserts transmission information at the start position of the transmission frame.
  • the transmission information insertion position is not limited.
  • FIG. 7 is a diagram illustrating a configuration example of the transmission frame transmission unit 103 according to the second embodiment.
  • transmission information is input from the input port 1037 to the transmission frame generation unit 1032.
  • the transmission frame generation unit 1032 inserts transmission information at the start position of the transmission frame.
  • the transmission frame in which the transmission information is inserted is transmitted to the receiving device 20B (FIG. 6).
  • FIG. 8 is a diagram illustrating a configuration example of the transmission frame receiving unit 203 according to the second embodiment.
  • the signal acquisition unit 2032 extracts transmission information from the transmission frame.
  • the transmission information extracted by the signal acquisition unit 2032 is output from the output port 2037 to the transmission information detection unit 208.
  • the transmission information detection unit 208 detects the transmission information output from the signal acquisition unit 2032 in each of the transmission frame reception units 203-1 to 203-4.
  • the transmission information detection unit 208 extracts control information from the transmission information.
  • the transmission information detection unit 208 outputs control information to the reception control unit 207.
  • the reception control unit 207 controls the lane assignment change with respect to the coordinates by the image composition unit 202.
  • the image composition unit 202 changes the lane assignment to the coordinates in accordance with the control by the reception control unit 207.
  • the transmission frame is received by the receiving unit 2035 according to the changed allocation, and the transmission frame is received by the signal acquiring unit 2032 A pixel data group (divided signal) is acquired from. Then, the image synthesis unit 202 identifies a lane to which each of the plurality of divided signals is transmitted according to the changed assignment, and generates a video signal by synthesizing the plurality of divided signals according to the identified lane.
  • FIG. 9 is a diagram showing an example of a pixel data group (divided signal) transmitted in each of lanes # 1 to # 4 and transmission information along a time series.
  • the transmission frame generation unit 1032 inserts transmission information at a first video frame start position 3031 and a V blank interval end position (second video frame start position) 3035. At this time, the transmission of the pixel data is started from the pixel data start position 3036 and the pixel data start position 3037 where the transmission of the transmission information is completed.
  • FIG. 10 is a diagram illustrating an example of transmission information (control information) transmitted at the first video frame start position 3031.
  • the control information shown in FIG. 10 is formed by associating coordinates in the first video frame with lanes assigned to the coordinates.
  • FIG. 11 is a diagram illustrating an example of transmission information (control information) transmitted at the second video frame start position 3035.
  • the control information shown in FIG. 11 is formed by associating coordinates in the first video frame with lanes assigned to the coordinates.
  • transmission information (control information) indicating allocation of lanes to coordinates in the video signal is transmitted from the transmission device 10B to the reception device 20B together with the video signal.
  • the transmission device 10B can control the timing for changing the allocation of lanes to coordinates.
  • lane allocation can be appropriately performed from a transmission frame that has been successfully received.
  • the transmission frame generation unit 1032 inserts transmission information (control information) into each of a plurality of transmission frames.
  • the transmission frame generation unit 1032 may insert transmission information (control information) into the transmission frame only at the timing of changing the lane assignment to the coordinates.
  • the example in which the transmission frame generation unit 1032 inserts transmission information (control information) at the start position of the transmission frame has been mainly described.
  • the transmission frame generation unit 1032 may insert transmission information (control information) inside the transmission frame.
  • the transmission control unit 107 designates control information different from the control information designated last time.
  • the transmission control unit 107 may designate the same control information as the control information designated last time.
  • the transmission frame generation unit may omit the insertion of the control information into the transmission frame.
  • the image dividing unit 102 may change the lane allocation to the coordinates after a while after the transmission information (control information) is input (for example, after a predetermined number of transmission frames are transmitted).
  • the image composition unit 202 may change the allocation of lanes to the coordinates after a while after the transmission information (control information) is input (for example, after a predetermined number of transmission frames are received).
  • control information including the coordinates in the video signal and the lane assigned to the coordinates is transmitted together with the video information from the transmission device 10B to the reception device 20B.
  • control information including a change pattern (or change pattern identification information) between the coordinates in the video signal and the lane assigned to the coordinates may be transmitted from the transmission device 10B to the reception device 20B together with the video information.
  • FIG. 12 is a diagram showing a modification of the pixel data group (divided signal) transmitted in each of lanes # 1 to # 4 and transmission information along a time series.
  • the transmission frame generation unit 1032 inserts transmission information at the first video frame start position 3031 and transmits the transmission frame for several frames, and then changes the change pattern. Transmission information is inserted into the V blank section end position (video frame start position) 3038. At this time, the transmission of the pixel data is started from the pixel data start position 3036 and the pixel data start position 3037 where the transmission of the transmission information is completed.
  • FIG. 13 is a diagram illustrating an example of transmission information (control information) transmitted at the first video frame start position 3031.
  • the control information shown in FIG. 13 includes a change pattern before change.
  • FIG. 14 is a diagram illustrating an example of transmission information (control information) transmitted at the video frame start position 3038.
  • the control information shown in FIG. 14 includes a changed pattern after change.
  • the change pattern is expressed by a combination of coordinates and lanes corresponding to frames 4N (N is an integer of 0 or more) +1 to frames 4N + 4.
  • N is an integer of 0 or more
  • the coordinates and lanes of “Frame 4N + 1” are used for the first transmission frame
  • the coordinates and lanes of “Frame 4N + 2” are used for the second transmission frame
  • “Frame 4N + 3” is used for the third transmission frame.
  • the coordinates and lanes of “frame 4N + 4” are used for the fourth transmission frame
  • the coordinates and lanes of “frame 4N + 1” are used again for the fifth transmission frame, Thereafter, the same use is repeated.
  • a lane assignment change pattern for coordinates is transmitted, the assignment can be changed according to the change pattern. Therefore, it is possible to reduce the data amount of transmission information transmitted from the transmission device 10B to the reception device 20B as compared to an example in which transmission information is transmitted each time a lane is changed with respect to coordinates (insertion of transmission information). Frequency can be reduced). Therefore, when a lane change pattern with respect to coordinates is transmitted, more video information can be transmitted.
  • the lane allocation change pattern for the coordinates is transmitted, it is possible to reduce the frequency of transmission information insertion.
  • transmission information is transmitted until the transmission information is received from the transmission device 10B. Accordingly, the lane cannot be assigned to the coordinates based on the above, and the output of the video signal cannot be started.
  • the insertion frequency of transmission information is preferably determined in consideration of the time until the start of video signal output.
  • control information may include the change pattern itself, and there is a correspondence between the change pattern identification information and the change pattern between the transmission device 10B and the reception device 20B. If shared, the control information may include change pattern identification information instead of the change pattern itself. According to such an example, it is possible to further reduce the amount of data transmitted from the transmission device 10B to the reception device 20B as compared to the case where the lane change pattern with respect to the coordinates is transmitted.
  • the transmission frame generation unit 1032 that generates a transmission frame based on the plurality of pixel data included in the video signal, and the plurality of pixel data after a predetermined change timing
  • a transmission device 10A including an image dividing unit (lane changing unit) 102 that changes the lane to which each is transmitted.
  • each functional block included in the transmission device 10 may be mounted on a separate IC (Integrated Circuit), or any combination may be mounted on the same IC.
  • each functional block included in the reception device 20 may be mounted on a separate IC, or any combination may be mounted on the same IC.
  • a transmission frame generation unit that generates a transmission frame based on a plurality of pixel data included in the video signal;
  • a lane changing unit that changes a lane in which each of the plurality of pixel data is transmitted after a predetermined change timing;
  • a transmission control apparatus comprising: (2) The lane changing unit specifies a lane to which each of the plurality of pixel data is transmitted based on lane assignment to each coordinate in the video signal before the predetermined change timing.
  • the transmission control device according to (1).
  • the lane changing unit changes the lane assignment for each coordinate in the video signal after the predetermined change timing.
  • the transmission control device according to (1) or (2).
  • the predetermined change timing is one or more times during transmission of the transmission frame, each time transmission of each of the plurality of transmission frames ends, or each time transmission of the plurality of transmission frames ends.
  • the transmission control device according to any one of (1) to (3).
  • the transmission control device includes: A transmission control unit that specifies control information including coordinates in the video signal and lanes assigned to the coordinates; The transmission control apparatus according to any one of (1) to (4).
  • the transmission control device includes: A transmission control unit that specifies control information including a change pattern of coordinates in the video signal and a lane assigned to the coordinates or identification information of the change pattern; The transmission control apparatus according to any one of (1) to (4).
  • the transmission frame generation unit inserts the control information into the transmission frame.
  • the transmission control device according to (5) or (6).
  • the transmission frame generation unit inserts the control information in a start position of the transmission frame or in the transmission frame;
  • the transmission control device according to (7).
  • the transmission frame generation unit omits the insertion of the control information when the control information specified last time and this time is the same.
  • the transmission control device according to (7) or (8).
  • a signal acquisition unit that acquires the plurality of pixel data from the transmission frame, The signal acquisition unit acquires the plurality of pixel data in which lanes transmitted after detection of a predetermined change timing are changed, Reception control device.
  • the reception control device includes: An image synthesis unit for synthesizing the plurality of pixel data; The image composition unit specifies a lane to which each of the plurality of pixel data is transmitted based on lane assignment to each coordinate in the video signal before the predetermined change timing.
  • the reception control device according to (10).
  • (12) The image composition unit changes the lane assignment for each coordinate in the video signal after the predetermined change timing.
  • the reception control device according to (11).
  • the predetermined change timing is one or more times during transmission of the transmission frame, each time transmission of each of the plurality of transmission frames ends, or each time transmission of the plurality of transmission frames ends.
  • the reception control apparatus according to any one of (10) to (12).
  • the reception control device includes: Based on control information including coordinates in the video signal and lanes assigned to the coordinates, a reception control unit that controls the lane assignment change by the image composition unit, The reception control device according to (11) or (12).
  • the reception control device includes: A reception control unit for controlling the lane allocation change by the image synthesis unit based on control information including a change pattern of the coordinates in the video signal and a lane assigned to the coordinates or identification information of the change pattern; The reception control device according to (11) or (12).
  • the signal acquisition unit extracts the control information from the transmission frame; The reception control device according to (14) or (15).
  • the signal acquisition unit extracts the control information from a start position of the transmission frame or the transmission frame; The reception control device according to (16).
  • the reception control device according to any one of (14) to (17).
  • a transmission frame generation unit that generates a transmission frame based on a plurality of pixel data included in the video signal;
  • a lane changing unit that changes a lane in which each of the plurality of pixel data is transmitted after a predetermined change timing;
  • a transmission control device comprising: When the transmission frame is received, a signal acquisition unit that acquires the plurality of pixel data from the transmission frame, The signal acquisition unit acquires the plurality of pixel data in which the transmitted lane is changed.
  • the lane changing unit changes the lane assignment for each coordinate in the video signal after the predetermined change timing.
  • the transmission / reception control system according to (19).
  • Signal transmission system 10 (10A, 10B) Transmission device 20 (20A, 20B) Reception device 102 Image segmentation unit 103 Transmission frame transmission unit 1031 Input port 1032 Transmission frame generation unit 1033 Encoding unit 1035 Transmission unit 1036 Output terminal 107 Transmission control unit 108 Transmission information generation unit 202 Image synthesis unit 203 Transmission frame reception unit 2031 Output port 2032 Signal acquisition unit 2033 Decoding unit 2035 Reception unit 2036 Input port 207 Reception control unit 208 Transmission information detection unit 30 Transmission path 303 Lane

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

Le problème décrit par la présente invention est de proposer une technologie qui est capable d'améliorer la visibilité d'une vidéo affichée côté réception même lorsque l'état de transfert d'une voie, parmi une pluralité de voies, sur lesquelles une partie ou la totalité d'un signal vidéo est émise s'est détériorée. À cet effet, la présente invention concerne un dispositif de commande d'émission comprenant : une unité de génération de trame de transfert permettant de générer une trame de transfert sur la base d'une pluralité d'éléments de données de pixel incluses dans un signal vidéo ; et une unité de modification de voie permettant de modifier, après une temporisation de modification prescrite, la voie correspondante sur laquelle chacun de la pluralité d'éléments de données de pixel est transmis.
PCT/JP2017/036594 2017-01-10 2017-10-10 Dispositif de commande d'émission, dispositif de commande de réception et système de commande d'émission/réception WO2018131232A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018561806A JP6993990B2 (ja) 2017-01-10 2017-10-10 送信制御装置、受信制御装置および送受信制御システム

Applications Claiming Priority (2)

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JP2017-001695 2017-01-10
JP2017001695 2017-01-10

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WO2018131232A1 true WO2018131232A1 (fr) 2018-07-19

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012142692A (ja) * 2010-12-28 2012-07-26 Sony Corp 電子機器、電子機器の制御方法および電子機器システム
JP2013207592A (ja) * 2012-03-28 2013-10-07 Fujitsu Ltd 光送信器、光受信器、及び光伝送方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012142692A (ja) * 2010-12-28 2012-07-26 Sony Corp 電子機器、電子機器の制御方法および電子機器システム
JP2013207592A (ja) * 2012-03-28 2013-10-07 Fujitsu Ltd 光送信器、光受信器、及び光伝送方法

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