JP5808509B2 - Video receiver - Google Patents

Description

  Embodiments described herein relate generally to a video receiving device.

  As an example of a multimedia interface between a video transmission device such as a Blu-ray Disc (Blu-ray Disc) player, a DVD (Digital Versatile Disk) player, a set-top box, and a video reception device such as a TV receiver / monitor, HDMI (High Definition Multimedia Interface) standard. A device having an HDMI output terminal is referred to as a source device, and a device having an HDMI input terminal is referred to as a sink device. The video transmitting device is a source device, and the video receiving device is a sink device.

  For HDMI communication devices that perform communication conforming to the HDMI standard, a TMDS (Transition Minimized Differential Signaling) transmission unit that transmits video, audio, and auxiliary information and a source device connected as a source ready signal when connected to the sink device A + 5V power signal transmission unit for informing the sink device, and an HPD signal transmission unit for transmitting an HPD (Hot Plug Detect) signal as a sync ready signal indicating that the sink device is ready to receive video information. An EDID transmission unit that transmits EDID (Extended Display Identification Data) that is data such as product information of the sink device that has been used and data of a compatible video format, and an HDCP (High-bandwidth Digital Content Protection) authentication unit that authenticates the sink device , CEC (Consumer Electronics Control) which is a device control signal and control protocol l) a CEC transmission unit for transmitting (1). The EDID transmission unit has a function as a transmission unit that transmits EDID via a display data channel (DDC).

  Conventionally, when video content is transmitted from a video transmission device to a video reception device, the image quality, frame rate, and the like of the transmitted video content are set in the video transmission device. It is also known to transmit the function of the video receiving device to the video transmitting device by EDID.

JP 2010-193247 A JP 2009-135726 A

  However, in the prior art, the color signal is used when all the color signals of all the frames of the video that can be output by the video transmitting device cannot be transmitted to the video receiving device, such as when the bandwidth of the transmission path is limited Alternatively, there is a problem that it is impossible for the video receiving device to set which of the frame rates is prioritized for transmission. The problem to be solved by the present invention is to provide a video receiving device capable of setting in the video receiving device which of the color signals or the frame rate is prioritized for transmission.

The video receiving device of the embodiment includes a transmission unit, a reception unit, and a decoding unit. The transmission unit transmits specific information different from EDID (Extended Display Identification Data) data whose data content is defined by a predetermined standard to a video transmission device. When the specific information indicates the first information, the receiving unit transmits four pieces of luminance information and two pieces of information for every four adjacent pixels transmitted in a predetermined format from the video transmission device according to the specific information. A 4: 2: 0 format video having color information is received via a digital interface having first, second and third transmission channels. The decoding unit decodes the video transmitted in the predetermined format. In the predetermined format, the color information is assigned only to the first transmission channel, the luminance information is assigned only to the second and third transmission channels, two pieces of luminance information, one piece of color information, and Is output at a timing corresponding to the same clock. The digital interface conforms to the predetermined standard. The third transmission channel is a channel having a number next to the number of the second transmission channel in the predetermined standard.

1 is an external view showing a connection example of a video reception device and a video transmission device according to an embodiment. The block diagram which shows the structure of the video reception apparatus and video transmission apparatus concerning embodiment. The block diagram which shows the structure of the 1st communication part of the video receiver concerning embodiment, and the 2nd communication part of a video transmitter. The figure which shows the format example of the video data of 60 fps whose format is 4: 2: 0, and the format example of the differential signal output to CH0-CH2 from a differential amplifier. FIG. 5 is a sequence diagram illustrating an operation in which the video transmission device according to the embodiment transmits video to the video reception device. The example of a screen which the display part of embodiment displays. The 2nd example of the screen which the display part of embodiment displays. The 3rd example of the screen which the display part of embodiment displays.

  Hereinafter, embodiments of a video receiving device and a video transmitting device will be described in detail with reference to the accompanying drawings. FIG. 1 is an external view illustrating a connection example of a video reception device 10 and a video transmission device 20 according to the embodiment. As shown in FIG. 1, the video reception device 10 is connected to the video transmission device 20 via, for example, an HDMI cable 30.

  The video receiving device 10 is, for example, a 4K resolution (4K2K) digital television. Specifically, the resolution of the video receiving device 10 is 4K (4096 × 2160) or QFHD (quad full HD: 3840 × 2160) having four times the number of pixels as FHD (full HD: 1920 × 1080). . The video receiving device 10 conforms to the HDMI standard and is called a sink device having an HDMI input terminal. Further, the video receiving device 10 operates in accordance with a signal input via the remote controller 40.

  The video transmission device 20 generates and transmits a 4K resolution video, for example. The video transmission device 20 conforms to the HDMI standard and is called a source device having an HDMI output terminal. In addition, the video transmission device 20 plays back video recorded on a medium such as a Blu-ray Disc (BD) and transmits the video to the video reception device 10 via the HDMI cable 30.

  In addition, the video transmission device 20 receives specific information specifying whether to perform transmission giving priority to a color signal or a frame rate from the video reception device 10, and generates a video generated by reproduction or the like as a color signal or a frame rate. One of the above is converted into a video that is prioritized according to the specific information and transmitted to the video receiving device 10. The identification information is information that uniquely identifies a combination of a video format (Y, Cb, Cr) and a frame rate transmitted from the video transmission device 20 to the video reception device 10. For example, the specific information is a unique code value associated with each combination of video format and frame rate. For example, code values “1” and “0” are set to a combination of a frame rate of 4: 2: 0 and a frame rate of 60 fps, and a combination of a frame rate of 4: 4: 4 and a frame rate of 30 fps. Specific information associated with each can be used. Further, for example, information representing user preferences such as “beauty priority” and “motion priority” may be used as the specific information. The video transmission device 20 converts the received specific information into corresponding setting information using a conversion table or the like. The setting information is information including a combination of a value indicating a video format (Y, Cb, Cr) transmitted from the video transmitting device 20 to the video receiving device 10 and a value indicating a frame rate. The video transmitting device 20 may be configured to receive the setting information itself from the video receiving device 10 and set the video format and frame rate according to the received setting information. Then, when information indicating whether the user desires transmission of video with priority given to the color signal or the frame rate is transmitted to the video transmission device 20 via the video reception device 10, the video transmission device 20 A video with priority given to either the color signal or the frame rate is transmitted to the video receiving device 10 according to the user's request. The video receiving device 10 can also receive and display the video transmitted by the video transmitting device 20. Also, the video transmission device 20 is in a 4: 2: 2 30 Hz mode, 4: 2: 0 60 Hz mode, and 4: 4: 4 30 Hz mode, which is a combination of Y, Cb, and Cr as color signals and a frame rate. The video of at least two or more operation modes is output to the HDMI cable 30.

  FIG. 2 is a block diagram schematically illustrating a configuration example of the video reception device 10 and the video transmission device 20. As shown in FIG. 2, the video receiving device 10 includes a television function unit 110, a first communication unit 100, a storage unit 130, a selector 12, a display unit 11, a display drive unit 13, speakers 14A and 14B, an audio drive unit 15, It has the control part 18 and the input part 10B. The television function unit 110 receives a television broadcast signal. The first communication unit 100 is a communication device that receives a digital video signal compliant with the HDMI standard. The storage unit 130 stores a setting history that is a history of transmitting setting information or a selection history that is a history of selecting specific information. The selector 12 selects the outputs of the television function unit 110 and the first communication unit 100. The display driving unit 13 causes the display unit 11 to display a video based on the video signal output from the selector 12. The audio driving unit 15 causes the speakers 14A and 14B to output audio based on the audio signal output from the selector 12. The control unit 18 controls each unit of the video receiving device 10. The input unit 10B accepts input such as settings for the video receiving device 10.

  Here, the setting history stored in the storage unit 130 is, for example, data that associates, with respect to each video genre, which color signal or frame rate is prioritized and the user prefers to set the video. Specifically, for a video of a genre such as sports with intense movement, a history set so that a video with priority given to, for example, a frame rate (for example, video in 4: 2: 0 60 Hz mode) is transmitted. For example, the setting history is data indicating that the user sets, for example, a video with priority given to a color signal (for example, video in 4: 4: 430 Hz mode) for a BD movie of 24 fps. It is. Further, the storage unit 130 stores, in place of storing the setting history, specific information specifying whether the user has set a video with priority given to a color signal or a frame rate for each video genre or the like. It may be configured. Further, the specific information may be information that is specified as to whether transmission is performed with priority given to a color signal or a frame rate by being selected from options.

  The TV function unit 110 receives a television broadcast signal by an antenna 112 connected to a TV (Television) input terminal 111 via an antenna line 50 and extracts a signal of a predetermined channel, and a tuner unit 113. And a signal processing unit 114 that accepts the reception signal output by the video signal V1 and restores the video signal V1 and the audio signal A1.

  The first communication unit 100 separates the HDMI standard digital video signal received from the second communication unit 200 of the video transmission device 20 connected to the connector 121 via the HDMI cable 30 into a video component and an audio component, and The signal V2 and the audio signal A2 are output. The first communication unit 100 includes an MC (microcomputer) 150 that can communicate with the second communication unit 200.

  The selector 12 selectively switches between the video signal V1 and the audio signal A1 output from the television function unit 110 and the video signal V2 and the audio signal A2 output from the first communication unit 100 to display the display drive unit 13 and the audio drive. A function of outputting to the unit 15.

  The video transmission device 20 includes a second communication unit 200 that is a communication device connected to the first communication unit 100 of the video reception device 10 via the HDMI cable 30 connected to the connector 201, and a recording medium 202 such as a Blu-ray disc. A recording / playback unit 203 that records and plays back to / from the MPEG, and MPEG-decodes the encoded data supplied from the recording / playback unit 203 into a baseband video signal and an audio signal, and the baseband video signal and the audio signal are And a codec 204 that supplies the communication unit 200. That is, the recording medium 202, the recording / playback unit 203, and the codec 204 constitute a video generation unit that generates video. The recording / reproducing unit 203 can also record the encoded data output from the codec 204 and the encoded data output from the second communication unit 200.

  The second communication unit 200 includes an MC (microcomputer) 250 that can communicate with the first communication unit 100.

  FIG. 3 is a block diagram illustrating a configuration example of the first communication unit 100 of the video reception device 10 and the second communication unit 200 of the video transmission device 20. The second communication unit 200 includes an MC (microcomputer) 250 and a TMDS encoder (transmission unit) 252. Further, the MC 250 has a bidirectional communication unit 254. The bidirectional communication unit 254 functions as a receiving unit that receives specific information from the video receiving device 10 and functions as a transmitting unit that transmits content information to the video receiving device 10 before the receiving unit receives the specific information. Have The bidirectional communication unit 254 may be included in the MC 250 or may be provided independently. The first communication unit 100 includes an MC (microcomputer) 150, a TMDS decoder (video receiving unit) 152, and an EDID storage unit 154. The MC 150 has a function as a transmission unit that transmits specific information to the video transmission device 20.

  The TMDS encoder 252 receives RGB 8-bit video data as an example of video generated by the recording medium 202, the recording / playback unit 203, and the codec 204. Then, the TMDS encoder 252 converts the input video data into video data (video) in which either the color signal or the frame rate is prioritized according to the specific information, and outputs a pixel clock generated by the conversion. For example, when the specific information is the code value “1”, the TMDS encoder 252 converts the input video data into 60 fps video data having a format of 4: 2: 0. A differential amplifier (not shown) converts the pixel clock output from the TMDS encoder 252 into a differential signal, and outputs the differential signal to the transmission lines CH0 to CH2 of the HDMI cable 30. The differential amplifier is provided so as to correspond to each of the transmission lines CH0 to CH2. And the said differential signal is transmitted to the 1st communication part 100 via the transmission line of CH0-CH2. Note that the TMDS encoder 252 may be configured to convert video data in accordance with content information. For example, the TMDS encoder 252 may be predetermined so as to perform conversion giving priority to the color signal for movie content of 24 fps.

  The first communication unit 100 is provided with a differential amplifier (not shown) for each of CH0 to CH2. When the differential amplifier receives the differential signals from CH0 to CH2, the differential amplifier converts the differential signals into data and outputs the data to the TMDS decoder 152. Then, the TMDS decoder 152 decodes these data into RGB 8-bit video data and outputs it to the selector 12.

  The MC 250 of the video transmission device 20 is connected to the MC 150 of the video reception device 10 via a CEC line and an HPD line. And MC250 and MC150 transmit the information for performing mutual control between apparatuses via a CEC line. The CEC line bi-directionally transmits a CEC command including specific information and a CEC command group. In addition, the MC 250 notifies the video transmission device 20 of the completion of signal transmission preparation according to the completion of power-on of the video reception device 10 via the HPD line. The bidirectional communication unit 254 of the MC 250 is connected to the EDID storage unit 154 of the video receiving device 10 via a DDC line. Then, the bidirectional communication unit 254 reads the EDID from the EDID storage unit 154. The EDID includes a format that can be used by the video receiving device 10 and is data indicating the capability of the video receiving device 10.

FIG. 4 is a diagram illustrating a format example of 60 fps video data having a format of 4: 2: 0, and a format example of a differential signal output from the differential amplifier to CH0 to CH2.
FIG. 4A shows an example of a format format of video in 4: 2: 0 format of 3840 × 2160 pixels. Here, the luminance information Y00 indicates the luminance information of the pixel P1. The first color difference information Cb00 indicates the color difference Cb for the four pixels of the pixel P1, the pixel P2 adjacent to the pixel P1, and the pixels P5 and P6 adjacent in the downward direction to the pixels P1 and P2. The first color difference information Cb00 may indicate the color difference Cb for only the pixel P1. The second color difference information Cr10 indicates the color difference Cr for the four pixels of the pixel P5, the pixel P6 adjacent to the pixel P5, and the pixels P1 and P2 adjacent in the upward direction to the pixels P5 and P6. The second color difference information Cr10 may indicate the color difference Cr only for the pixel P5. The luminance information Y01 indicates the luminance of the pixel P2, the luminance information Y10 indicates the luminance of the pixel P5, and the luminance information Y11 indicates the luminance of the pixel P6.

  Similarly, the luminance information Y02 indicates the luminance of the pixel P3. The first color difference information Cb02 indicates the color difference Cb for the four pixels of the pixel P3, the pixel P4 adjacent to the pixel P3, and the pixels P7 and P8 adjacent in the downward direction to the pixels P3 and P4. The first color difference information Cb02 may indicate the color difference Cb for only the pixel P3. The second color difference information Cr12 indicates the color difference Cr for the four pixels of the pixel P7, the pixel P8 adjacent to the pixel P7, and the pixels P3 and P4 adjacent in the upward direction to the pixels P7 and P8. The second color difference information Cr12 may indicate the color difference Cr for only the pixel P7. The luminance information Y03 indicates the luminance of the pixel P4, the luminance information Y12 indicates the luminance of the pixel P7, and the luminance information Y13 indicates the luminance of the pixel P8.

  FIG. 4B is a diagram illustrating an example of signals output from the differential amplifier (not shown) to the transmission lines CH0 to CH2 of the HDMI cable 30. The second transmission unit 200 outputs the luminance component Y of the data in the format of FIG. 4A using two of the transmission lines CH0 to CH2, and outputs the color difference component CbCr in one channel. That is, in the example of FIG. 4B, the second transmission unit 200 outputs the first color difference information Cb00, the luminance information Y00, and the luminance information Y10 at the same clock timing, and the second color difference information Cr10, the luminance information Y01, and the luminance. Information Y11 is output at the same clock timing. The second transmission unit 200 outputs the first or second color difference information and the luminance information of the two pixels at the same clock timing thereafter.

  Next, an operation in which the video transmission device 20 transmits video to the video reception device 10 will be described. FIG. 5 is a sequence diagram illustrating an example of an operation in which the video transmission device 20 transmits a video (AV stream) to the video reception device 10. When recognizing that the video receiving device 10 is connected, the video transmitting device 20 inquires about the capability of the video receiving device 10 as shown in step 100 (S100).

  In step 102 (S102), the video receiving device 10 makes a response to transmit capability information (EDID or the like) to the video transmitting device 20.

  In step 104 (S104), the video transmitting device 20 instructs the video receiving device 10 (sink side) to perform initial settings for starting video transmission according to the capabilities of the video receiving device 10.

  In step 106 (S106), the video receiving device 10 transmits data indicating that the instructed setting has been completed to the video transmitting device 20. Note that the process of S106 may be omitted.

  In step 108 (S108), the video transmitting device 20 transmits content information indicating the attribute of the video to be transmitted to the video receiving device 10 to the video receiving device 10. Here, the content information includes, for example, the genre and resolution of the video output from the video transmission device 20 and the type of medium on which the recording / playback unit 203 plays back the video. In addition, the user can easily determine whether the video transmitted from the video transmission device 20 to the video reception device 10 should be given priority to the color signal or the frame rate according to the user's preference. Information may be included in the content information.

  In step 110 (S110), the video receiving device 10 transmits specific information corresponding to the content information transmitted in the process of S108 to the video transmitting device 20. For example, specific information that prioritizes the frame rate corresponds to video content that moves rapidly, and specific information that prioritizes color signals corresponds to video content that moves less. The video receiving device 10 selects, for example, specific information corresponding to the content information from the specific information included in the selection history stored in the storage unit 130, and the selected specific information is information that reflects the user's preference. If there is, the selected specific information may be transmitted to the video transmission device 20.

  In step 112 (S112), the video transmitting device 20 converts the video (AV stream) converted so that the second communication unit 200 prioritizes either the color signal or the frame rate according to the specific information transmitted in the process of S110. ) To the video receiving device 10.

  In step 114 (S114), the video receiving device 10 should give priority to either the color signal or the frame rate of the video transmitted from the video transmitting device 20 in accordance with the input from the user received via the remote controller 40, for example. Select a new one.

  FIG. 6 is an example of a screen (user interface) displayed by the display unit 11 when the video receiving device 10 selects which of the color signals or the frame rate is to be transmitted. The screen shown in FIG. 6 is displayed on the display unit 11 in response to an input from the user received via the remote controller 40, for example. In the process of S114, the display unit 11 first displays a preview image A with priority on image quality (color signal priority) and a preview image B with priority on frame rate side by side. When the user selects either “beauty priority image” or “motion priority image” via the remote controller 40 according to the comparison between the genre of the video displayed on the display unit 11 and the preview images A and B, the video The receiving device 10 selects whether the video transmitted from the video transmitting device 20 should give priority to the color signal or the frame rate so as to correspond to the user's selection. The result selected by the video receiving device 10 is specific information.

  In step 116 (S116: FIG. 5), the video receiving device 10 transmits the result selected in the process of S114 to the video transmitting device 20 as a video quality setting change request.

  In step 118 (S118), in response to the quality setting change request transmitted in the process of S116, the video transmission device 20 sets the video with priority given to either the color signal or the frame rate as a newly set AV stream. Transmit to the receiving device 10.

  In the operation example illustrated in FIG. 5, when the video reception device 10 selects specific information corresponding to the content information transmitted in the process of S <b> 108 from the specific information stored in the storage unit 130 and transmits the specific information. However, the present invention is not limited to this.

  For example, when the content information is transmitted in the process of S108, the video receiving device 10 is configured such that the display unit 11 displays the screen illustrated in FIG. 6 and performs the process of S110 according to the user input. Also good. In addition, the video receiving device 10 may transmit setting information instead of the specific information in the processing of S110. In the processing of S110, even if the video receiving device 10 transmits the specific information described above to the video transmitting device 20, and the video transmitting device 20 specifically sets the color signal or the frame rate of the video according to the specific information. Good.

(Other screen examples displayed on the display unit 11)
Next, another example of the screen displayed by the display unit 11 when the video receiving device 10 selects which of the color signals or the frame rate should be transmitted will be described. FIG. 7 is a second example of a screen displayed by the display unit 11 in the process of S114 (FIG. 5). As shown in FIG. 7, the display unit 11 is provided for each genre such as a genre of a video such as sports that is intense in motion, a genre that has little movement such as a natural video, and that can prioritize color signals, and a genre of still photos. A combination of the color signals (Y, Cr, Cb) set in the past and the frame rate may be displayed, and the user may be prompted to select according to the past selection history of the user. In addition, the display unit 11 displays the attribute of the content that the user wants to view according to the content information, and changes the combination of the color signal and the frame rate recommended by the arrangement of the selection cursor (thick solid line frame) C. It may be configured to display as possible. The combination of the recommended color signal and the frame rate is determined according to the user's past selection history or content information, for example.

  FIG. 8 is a third example of a screen displayed by the display unit 11 in the process of S114 (FIG. 5). For example, the display unit 11 may change the color signal or the video signal before the color signal or the video signal is switched to a video that may be preferred to be transmitted with priority to the frame rate. You may comprise so that the display which makes a user select which of a frame rate should be prioritized may be performed.

  Note that the first communication unit 100 and the second communication unit 200 may each be configured by a program or the like, or may be configured by hardware.

  According to the embodiment described above, when video is transmitted from the video transmission device to the video reception device, it is possible to set in the video reception device whether transmission with priority is given to the color signal or the frame rate. it can.

  In the above embodiment, an example is described in which either the color signal or the frame rate is prioritized and the data corresponding to the color signal (color difference signal) or the frame rate that is not prioritized may be reduced. However, it is not limited to this. For example, if the amount of data to be transmitted is within the bandwidth limit of transmission by the HDMI cable 30, the amount of data may be changed by changing the resolution, angle of view information, VIC information, color depth information, color gamut, and the like. Further, if the amount of data to be transmitted is within the bandwidth limit of transmission by the HDMI cable 30, super-resolution may be performed by the sink device. In the series of explanations, an example of wired connection using the HDMI cable 30 (which may be a display port cable or the like) is shown, but the present invention is also applicable to wireless connection. In that case, the HDMI cable 30 is not necessary, and the first communication unit 100 and the second communication unit 200 may have a function of performing wireless communication.

  Moreover, although embodiment of this invention was demonstrated by the several combination, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 10 Image | video receiving apparatus 10B Input part 11 Display part 18 Control part 20 Image | video transmission apparatus 30 HDMI cable 40 Remote control 100 1st communication part 130 Memory | storage part 150 MC
152 TMDS decoder 154 EDID storage unit 200 Second communication unit 202 Recording medium 203 Recording / reproducing unit 204 Codec 250 MC
252 TMDS encoder 254 Bidirectional communication unit

Claims (17)

A transmitting unit that transmits specific information different from EDID (Extended Display Identification Data) data whose data content is defined by a predetermined standard to a video transmitting device;
In the case where the specific information indicates the first information, 4 luminance information and two color information are transmitted for every four adjacent pixels transmitted in a predetermined format from the video transmission device according to the specific information 4 A receiver that receives video in the 2: 0 format via a digital interface having first, second, and third transmission channels;
A decoding unit for decoding video transmitted in the predetermined format,
In the predetermined format, the color information is assigned only to the first transmission channel, the luminance information is assigned only to the second and third transmission channels, two pieces of luminance information, one piece of color information, and Is output at the timing corresponding to the same clock,
The digital interface conforms to the predetermined standard,
The third transmission channel is a channel having a number next to the number of the second transmission channel in the predetermined standard.
Video receiving device. A second receiver for receiving a video of a format different from the video received by the receiver;
A selector that selects one of the receiving unit and the second receiving unit, and outputs video from the one;
The video receiving device according to claim 1, further comprising: The second receiving unit is a tuner that receives a broadcast signal.
The video receiving device according to claim 2. An input unit for receiving an operation signal from the remote controller;
The transmitter transmits the specific information in response to the operation signal;
The video receiving device according to claim 1. A display for displaying images,
The video receiving device according to claim 1, further comprising: The receiving unit receives a 4K resolution video transmitted in the predetermined transmission format;
The video receiving device according to claim 1. A super-resolution unit that performs super-resolution processing on the decoded video to obtain high-quality video,
The video receiving device according to claim 1, further comprising: The first transmission channel is channel 0 defined by HDMI (High Definition Multimedia Interface),
The second transmission channel is channel 1 defined by the HDMI,
The third transmission channel is channel 2 defined by the HDMI.
The video receiving device according to claim 1.   The transmission unit transmits the EDID data, the data content of which is defined by the predetermined standard, via a first path, and transmits the specific information via a second path;
The video receiving device according to claim 1. A transmission unit that transmits specific information different from EDID data whose data content is defined by HDMI to a video transmission device;
When the specific information indicates the first information, the video in YCbCr4: 2: 0 format transmitted from the video transmission device in a predetermined format according to the specific information is transmitted via a digital interface compliant with HDMI. A receiving unit for receiving;
A decoding unit for decoding video transmitted in the predetermined format,
In the predetermined format, the Cb element and the Cr element in the video in the YCbCr4: 2: 0 format are assigned only to the channel 0 defined in the HDMI, and the Y element in the video in the YCbCr4: 2: 0 format is assigned in the HDMI. Assigned to defined channel 1 and channel 2 only, (1) two Y elements and one Cb element, or (2) two Y elements and one Cr element correspond to the same clock It is a format that outputs at timing,
Video receiving device. A second receiver for receiving a video of a format different from the video received by the receiver;
A selector that selects one of the receiving unit and the second receiving unit, and outputs video from the one;
The video receiving device according to claim 10 , further comprising: The second receiving unit is a tuner that receives a broadcast signal.
The video receiving device according to claim 11 . An input unit for receiving an operation signal from the remote controller;
The transmitter transmits the specific information in response to the operation signal;
The video receiving device according to claim 10 . The video receiving device according to claim 10 , further comprising a display unit that displays a video. The receiving unit receives a 4K resolution video transmitted in the predetermined transmission format;
The video receiving device according to claim 10 . A super-resolution unit that performs super-resolution processing on the decoded video to obtain high-quality video,
The video receiving device according to claim 10 , further comprising:   The transmitting unit transmits the EDID data, the data content of which is defined in the HDMI, via a first path, and transmits the specific information via a second path;
The video receiving device according to claim 10.

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