JP5784810B2 - Transmission device, reception device, transmission method, and reception method - Google Patents

Description

  Embodiments described herein relate generally to a transmission device, a reception device, a transmission method, and a reception method.

  As an example of a multimedia interface between a video transmission device such as a DVD player or a set-top box and a video reception device such as a TV receiver / monitor, there is the 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 transmission device is a source device, and the video reception device is a sink device. A device having an HDMI input terminal and an HDMI output terminal and having both functions of a source device and a sink device is referred to as a repeater device.

  In an HDMI communication apparatus that performs communication conforming to the HDMI standard described above, when a TMDS (Transition Minimized Differential Signaling) transmission unit that transmits video, audio, and auxiliary information and a source device are connected to a sink device or a repeater device, the source ready + 5V power signal transmission unit for informing the sink device or repeater device that it is connected as a signal, and HPD (Hot Plug Detect) as a sync ready signal indicating that the sink device or repeater device is ready to receive video information An HPD signal transmission unit that transmits signals, an EDID transmission unit that transmits EDID (Extended Display Identification Data) that is data such as product information of the connected sink device and a compatible video format, and HDCP that authenticates the sink device (High-bandwidth Digital Content Protection) authentication unit and device And a CEC transmission part for transmitting the CEC is a control signal and a control protocol (Consumer Electronics Control).

JP 2008-252819 A

  Incidentally, in recent years, there has been an increasing demand for 3840 × 2160 high-resolution video called 4K2K. However, in the transmission of high-resolution video, the transmission amount becomes large, and there is a possibility that the impossibility of communication interface increases.

  Therefore, an object of the embodiment of the present invention is to provide a transmission device, a reception device, a transmission method, and a reception method that can suppress a load on a communication interface.

In order to solve the above-described problem, the transmission apparatus according to the present embodiment is a transmission apparatus that transmits an image to an external apparatus via channel 0, channel 1, and channel 2 of a transmission line that conforms to the HDMI standard. The transmission apparatus includes a reading unit, a conversion unit, a TMDS encoding unit, and a transmission unit. The reading means reads video data in a format different from the 4 : 2: 0 format. Conversion means, the image data of the different formats that have been read, before Symbol 4: 2: 0 format is converted into video data. TMDS encoding means, obtained by the conversion to 4: 2: 0 to TMDS encoding the luminance information and the lust paper of the video data format. The transmission means transmits the signal obtained by the TMDS encoding as a differential signal corresponding to the TMDS clock in a predetermined transmission format. The predetermined transmission format, the TMDS encoded assigned only the channel 0 as the transmission channel of the lust paper, the only channel 1 and the channel 2 as the transmission channel of the TMDS encoded the luminance information the assigned a format for transmitting a differential signal and two of said luminance information and one of the lust report for each of the TMDS clock.

The figure which shows the usage example of the communication apparatus of embodiment. The figure which shows the system configuration example of the communication apparatus of embodiment. The figure which shows the system configuration example of the communication apparatus of embodiment. FIG. 4 is a diagram for explaining an example of a pixel encoding format of video transmitted by the communication apparatus according to the embodiment. FIG. 4 is a diagram illustrating an example of a video timing format used by the communication apparatus according to the embodiment. The figure which shows the structural example of the data which the communication apparatus of embodiment stores. The figure which shows the structural example of the data which the communication apparatus of embodiment transmits. The figure which shows the processing flow which concerns on the video transmission by the communication apparatus of embodiment. The figure which shows the processing flow which concerns on the video reception by the communication apparatus of embodiment.

  Hereinafter, embodiments will be described with reference to the drawings.

  FIG. 1 is an overall view showing an example of a data transmission system according to the first embodiment.

  In this data transmission system, a playback device 100 that is a source device and a display device 200 that is a sink device in the present embodiment are connected by an HDMI cable 300.

  The reproduction apparatus 100 includes a reading unit 101 and a storage unit 102 (not shown in FIG. 1), and has a function of reproducing (decoding) encoded video data stored in the optical disk or the storage unit 102. Then, the playback device 100 outputs the decoded video data to the display device 100 via the HDMI cable 300. The display device 200 includes a display unit 203 and displays video using the received video data.

  FIG. 2 shows a system configuration example of the playback device 100 and the display device 200.

  The playback apparatus 100 includes a reading unit 101, a storage unit 102, a decoding unit 103, an HDMI transmission unit 104, and the like. The reading unit 101 reads the encoded video data stored on the optical disk and outputs it to the decoding unit 103. The storage unit 102 stores, for example, recorded encoded video data, and outputs the stored encoded video data to the decoding unit 103. Then, the decoding unit 103 decodes the input encoded video data into, for example, RGB 8-bit video data. The HDMI transmission unit 104 converts the decoded video data into a video signal having a predetermined transmission format, and outputs the video signal to the display device 200 via the HDMI cable 300.

  The display device 200 includes an HDMI receiving unit 201, a display processing unit 202, a display unit 203, a tuner 204, a signal processing unit 205, and the like. The HDMI receiving unit 201 receives a video signal, and converts the received video signal into video data in a format that can be processed by the display processing unit 202 (for example, RGB 8-bit baseband data). The display processing unit 202 converts the video data input from the HDMI receiving unit 201 and the signal processing unit 205 into a video signal in a format that can be displayed by the display unit 203, and outputs the video signal to the display unit 203. The display unit 203 displays an image using the input image signal.

  The tuner 204 receives a television broadcast signal. Then, the signal processing unit 205 processes the received broadcast signal, converts it into video data, and outputs it to the display processing unit 202.

  FIG. 3 is a diagram illustrating a system configuration of the HDMI transmission unit 104 of the playback device 100 and the HDMI reception unit 201 of the display device 200.

  The HDMI transmission unit 104 includes a TMDS encoder 151, a microcomputer 152, a communication unit 153, and the like. The HDMI receiving unit 201 includes a TMDS decoder 251, a microcomputer (252), an EDID 253, and the like.

  The TMDS encoder 151 receives RGB 8-bit video data. Then, the TMDS encoder 151 converts the input video data into video data having a format described later in FIGS. 5 and 6 and outputs the pixel clock generated by the conversion to each of CH0 to CH2. A differential amplifier (not shown) converts the pixel clock output from the TMDS encoder 151 into a differential signal and outputs the differential signal to the CH0-CH2 transmission lines. The differential amplifier is provided so as to correspond to each of the transmission lines of CH0-CH2. Then, the differential signal is transmitted to the HDMI receiving unit 201 via the CH0-CH2 transmission line.

  The HDMI receiving unit 201 is provided with a differential amplifier (not shown) for each of CH0 to CH2. When receiving the differential signal from CH0-CH2, the differential amplifier converts the differential signal into data and outputs the data to the TMDS decoder 251. Then, the TMDS coder 251 decodes the data into RGB 8-bit video data and outputs the decoded data to the display processing unit 202.

  The source device microcomputer 152 is connected to the sink device microcomputer 252 via a CEC line and an HPD line. The microcomputer 152 and the microcomputer 252 transmit information for performing mutual control between devices via the CEC line. Further, the microcomputer 152 notifies the source device of the completion of signal transmission preparation in response to the completion of power-on of the sink device via the HPD line.

  The communication unit 153 of the microcomputer 152 is connected to the EDID 253 of the sink device via a DDC line. Then, the communication unit 153 reads EDID data from the EDID 253.

  Next, the (YCrCb) 4: 2: 0 format will be described with reference to FIG.

  For example, when transmitting 4K2K video, it is preferable that the transmission amount of the video is suppressed to prevent the communication interface from being disabled. On the other hand, the source video decoded by the playback apparatus 100 is RGB 4: 4: 4, and a large transmission amount is required to transmit the video. Therefore, consider that the video sample format is (YCrCb) 4: 2: 0 and the data amount is halved.

  FIG. 4A shows a video format when the R, G, B signals of 4K2K video are converted to (YCrCb) 4: 2: 0. This (YCrCb) 4: 2: 0 format is a format immediately after the compression format is decoded by the decoding unit 103 by the reading unit 101 in FIG. 2 and immediately before conversion to R, G, B. 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 P4, and the luminance information Y11 indicates the luminance of the pixel P5.

  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 P6, and the luminance information Y13 indicates the luminance of the pixel P7.

  At this time, for example, as shown in FIG. 4B, pixel encoding is performed so that data in the format of FIG. 4A is transmitted line by line and displayed on a display device at 60 frames / second, 4400 Pixels (= 3840 pixels in the horizontal direction of the image + HB (Horizontal Blank) 560 pixels) × 2250 lines (= vertical 2160 lines + 90 VB (Vertical Blank) 90 lines) × 60 Hz = 594 megapixels / second (see FIG. 5A) . That is, the pixel clock in this case is 594 MHz. However, the conventional HDMI has a maximum transmission speed of 340 MHz, and the video cannot be transmitted by the pixel encoding of FIG.

  Therefore, as shown in FIG. 4C, the TMDS encoder 151 transmits the luminance component Y of the data in the format of FIG. 4A every two lines and transmits the color difference component CbCr in one channel. If pixel encoding is performed, 2160 lines of source video data can be transmitted over 1080 lines. That is, in the method of FIG. 4C, the pixel clock when transmitting a 60 Hz display image can be set to 297 MHz which is a half of FIG. 4B.

  FIG. 5 shows an example of a video timing format of 4K2K video sampled at YCrCb4: 2: 0. Here, the format of FIG. 5A is an example of a timing format when the pixel encoding method of FIG. 4B is used, for example. In this case, as described in FIG. 4A, the pixel clock becomes 594 MHz (4400 pixels × 2250 lines × 60 Hz) when the display rate of each frame is set to 60 Hz.

  5B and 5C are timing format examples when the pixel encoding method of FIG. 4C is used. In the example of FIG. 5B, 90 lines are transmitted as VB, and one frame is transmitted on the subsequent 1080 lines. Subsequently to the transmission of one frame, the next frame is transmitted by 1080 lines. In this method, transmission in units of 2250 lines is performed at 30 Hz. Therefore, the pixel clock in this method is 297 MHz (4400 pixels × 2250 lines × 30 Hz).

  In the example of FIG. 5C, 45 lines are transmitted as VB, and one frame is transmitted by the following 1080 lines. Then, transmission of 1080 + 45 in units of 1125 lines is executed at 60 Hz. Therefore, the pixel clock in this method is 297 MHz (4400 pixels × 1125 lines × 60 Hz).

  In addition, a stereoscopic display video may be transmitted using the timing formats of FIGS. 5B and 5C. In other words, the playback device 100 uses, for example, a right-eye image and a left-eye image in which the frame frequency and the pixel transmission clock frequency are ½ of the format shown in FIG. It may be included in the format C) and transmitted. In this case, the playback apparatus 100 may transmit the right-eye image at the position of Frame 1 in FIGS. 5B and 5C and the left-eye image at the position of Frame 2 and transmit them to the reception apparatus 200, for example.

  That is, the playback apparatus 100 assigns one of the right-eye image and the left-eye image in the YCrCb 4: 2: 0 MPEG format to the position 0 to 1080 lines counted from the end of VB in FIG. You may assign to the position of 1080-2160 lines counting from the terminal of.

  FIG. 6 is a data configuration example of EDID data stored in the EDID 253 by the display device 200. In the P10 of the EDID data, for example, several pieces of 4: 2: 0 format information VIC1 to VIC6 such as FIG. 5B or FIG. The In FIG. 6, “YCbCr (4: 2: 0) indicator” is stored in P10. The indicator indicates a usable video format. That is, the indicator indicates that, for example, YCrCb (4: 2: 0) can be used as the transmission format, the system shown in FIG. 4C can be used as the pixel encoding system, and the like.

  FIG. 7 shows an example of the data structure of the InfoFrame that the playback device 100 includes in the video signal and transmits to the display device 200. Note that the InfoFrame is superimposed on, for example, a blank area in FIG. The InfoFrame P20 includes information indicating the format of the video to be transmitted. In FIG. 7, “YCbCr (4: 2: 0) indicator” is stored in P20. The indicator indicates the format of the video to be transmitted. That is, the indicator indicates that, for example, YCrCb (4: 2: 0) is used as the transmission format, and the FIG. 4C method is used as the pixel encoding method. The P21 VIC indicates one of the video timing formats of the VICs 1 to 6 shown in FIG.

  Next, a processing example related to video transmission by the playback device 100 will be described with reference to FIG. The playback device 100 reads the EDID 253 of the display device 200 using the communication unit 153 in response to transmitting a video with a predetermined resolution (for example, 4K2K) to the display device 200 (S801). Then, the microcomputer 152 analyzes the indicator (P10 in FIG. 4) included in the read EDID, and whether or not the display device 200 corresponds to the resolution of the video transmitted by the playback device 100 and the video format used for video transmission. Is determined (S802). If the display device 200 is compatible (Yes in P802), the microcomputer 152 causes the display device 200 to output a video signal including an InfoFrame indicating the video format and resolution (S803). Note that the playback device 100 does not perform video transmission when the display device 200 does not support the video to be transmitted (No in S802).

  FIG. 9 is a diagram illustrating a processing example related to video reception by the display device 200. First, the microcomputer 252 receives InfoFrame included in the transmitted video signal (S901). When the transmission method indicated by the InfoFrame is the method shown in FIG. 4C (S902), the TMDS decoder 251 outputs a video signal in the format shown in FIG. 4C in which 2160 lines of video are superimposed on 1080 lines. Receive (S903). Then, the TMDS decoder 251 outputs two lines of video to the display processing unit 202 for each inputted one line of video. On the other hand, if the transmission method indicated by InfoFrame in S902 is the conventional one (No in S902), the display device 200 converts the input video signal using the conventional method and outputs it to the display processing unit 202 (S905). .

  In this embodiment, the case of transmitting 4K2K video is taken as an example. However, when transmitting conventional HD image quality (1920 × 1080) video, YCrCb4: 2: 0 is also used as in this embodiment. The video may be sampled and transmitted.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These 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 their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 100 ... Playback apparatus 101 ... Reading part 102 ... Memory | storage part 103 ... Decoding part 104 ... HDMI transmission part 151 ... TMDS encoder 152 ... Microcomputer 153 ... Communication part 200 ... Display apparatus 201 ... HDMI receiving part 202 ... display processing unit, 203 ... display unit, 204 ... tuner, 205 ... signal processing unit, 251 ... TMDS decoder, 252 ... microcomputer, 253 ... EDID, 300 ... HDMI cable.

Claims (40)

A transmission device that transmits video to an external device via channel 0, channel 1, and channel 2 of a transmission line that conforms to the HDMI standard,
Reading means for reading video data in a format different from 4 : 2: 0 format;
The video data of the different formats that have been read, before Symbol 4: 2: 0 format conversion means for converting the video data,
Obtained by the conversion of 4: 2: 0 format and TMDS encoding means for TMDS encoding luminance information and lust report of video data,
Transmitting means for transmitting a signal obtained by the TMDS encoding as a differential signal corresponding to a TMDS clock in a predetermined transmission format;
With
It said predetermined transmission format, assignment only the channel 0 as the TMDS encoded transmission channel of the lust paper, assigned only the channel 1 and the channel 2 as the transmission channel of the TMDS encoded the luminance information Te is a format for transmitting a differential signal and two of said luminance information and one of the lust report for each of the TMDS clock transmission device. A transmission device that transmits video to an external device via channel 0, channel 1, and channel 2 of a transmission line that conforms to the HDMI standard,
Reading means for reading video data in a format different from the 4: 2: 0 format;
Conversion means for converting the read video data of the different format into video data of the 4: 2: 0 format;
TMDS encoding means for TMDS encoding luminance information and color information of video data in 4: 2: 0 format obtained by the conversion;
Transmitting means for transmitting a signal obtained by the TMDS encoding as a differential signal corresponding to a TMDS clock in a predetermined transmission format;
With
In the predetermined transmission format, only the channel 0 is assigned as the transmission channel for the TMDS-encoded color information, and only the channel 1 and the channel 2 are assigned as the transmission channels for the luminance information encoded by the TMDS. A transmission device, which is a format for transmitting a plurality of pieces of information including two pieces of luminance information and one piece of color information in a temporally continuous manner. A transmission device that transmits video to an external device via channel 0, channel 1, and channel 2 of a transmission line that conforms to the HDMI standard,
Reading means for reading video data in a format different from the 4: 2: 0 format;
Conversion means for converting the read video data of the different format into video data of the 4: 2: 0 format;
TMDS encoding means for TMDS encoding luminance information and color information of video data in 4: 2: 0 format obtained by the conversion;
Transmitting means for transmitting a signal obtained by the TMDS encoding as a differential signal corresponding to a TMDS clock in a predetermined transmission format;
With
The predetermined transmission format is:
In the channel 0, one color information is assigned to each of the first transmission block and the second transmission block subsequent to the first transmission block,
In the channel 1, one luminance information is allocated to each of a third transmission block and a fourth transmission block subsequent to the third transmission block,
In the channel 2, one luminance information is allocated to each of the fifth transmission block and the sixth transmission block subsequent to the fifth transmission block,
A transmission apparatus having a format for transmitting the first, third, and fifth transmission blocks at the same timing and transmitting the second, fourth, and sixth transmission blocks at the same timing. A transmission device that transmits video to an external device via channel 0, channel 1, and channel 2 of a transmission line that conforms to the HDMI standard,
Reading means for reading video data in a format different from the 4: 2: 0 format;
Conversion means for converting the read video data of the different format into video data of the 4: 2: 0 format;
TMDS encoding means for TMDS encoding luminance information and color information of video data in 4: 2: 0 format obtained by the conversion;
Transmitting means for transmitting a signal obtained by the TMDS encoding as a differential signal corresponding to a TMDS clock in a predetermined transmission format;
With
The predetermined transmission format is:
In the channel 0, one color information is assigned to each of the first transmission block and the second transmission block subsequent to the first transmission block,
In the channel 1, one luminance information is allocated to each of a third transmission block and a fourth transmission block subsequent to the third transmission block,
In the channel 2, one luminance information is allocated to each of the fifth transmission block and the sixth transmission block subsequent to the fifth transmission block,
A transmission apparatus having a format for transmitting the first to sixth transmission blocks at a timing corresponding to a predetermined number of the TMDS clocks. The transmission device according to claim 1, wherein the reading unit reads video data having a format different from the 4: 2: 0 format from an optical disk. Storage means for storing video data in a format different from the 4: 2: 0 format;
The transmission device according to claim 1, wherein the reading unit reads video data having a format different from the 4: 2: 0 format from the storage unit. A transmission device that transmits video to an external device via channel 0, channel 1, and channel 2 of a transmission line that conforms to the HDMI standard,
4: 2: 0 format and TMDS encoding means for TMDS encoding luminance information and lust report of video data,
Transmitting means for transmitting a signal obtained by the TMDS encoding as a differential signal corresponding to a TMDS clock in a predetermined transmission format;
With
It said predetermined transmission format, assignment only the channel 0 as the TMDS encoded transmission channel of the lust paper, assigned only the channel 1 and the channel 2 as the transmission channel of the TMDS encoded the luminance information Te is a format for transmitting a differential signal and two of said luminance information and one of the lust report for each of the TMDS clock transmission device. A transmission device that transmits video to an external device via channel 0, channel 1, and channel 2 of a transmission line that conforms to the HDMI standard,
TMDS encoding means for TMDS encoding luminance information and color information of video data in 4: 2: 0 format;
Transmitting means for transmitting a signal obtained by the TMDS encoding as a differential signal corresponding to a TMDS clock in a predetermined transmission format;
With
In the predetermined transmission format, only the channel 0 is assigned as the transmission channel for the TMDS-encoded color information, and only the channel 1 and the channel 2 are assigned as the transmission channels for the luminance information encoded by the TMDS. In addition, the transmission device has a format in which a plurality of pieces of information each including two pieces of luminance information and one piece of color information are transmitted sequentially in time. A transmission device that transmits video to an external device via channel 0, channel 1, and channel 2 of a transmission line that conforms to the HDMI standard,
TMDS encoding means for TMDS encoding luminance information and color information of video data in 4: 2: 0 format;
Transmitting means for transmitting a signal obtained by the TMDS encoding as a differential signal corresponding to a TMDS clock in a predetermined transmission format;
With
The predetermined transmission format is:
In the channel 0, one color information is assigned to each of the first transmission block and the second transmission block subsequent to the first transmission block,
In the channel 1, one luminance information is allocated to each of a third transmission block and a fourth transmission block subsequent to the third transmission block,
In the channel 2, one luminance information is allocated to each of the fifth transmission block and the sixth transmission block subsequent to the fifth transmission block,
A transmission apparatus having a format for transmitting the first, third, and fifth transmission blocks at the same timing and transmitting the second, fourth, and sixth transmission blocks at the same timing. A transmission device that transmits video to an external device via channel 0, channel 1, and channel 2 of a transmission line that conforms to the HDMI standard,
TMDS encoding means for TMDS encoding luminance information and color information of video data in 4: 2: 0 format;
Transmitting means for transmitting a signal obtained by the TMDS encoding as a differential signal corresponding to a TMDS clock in a predetermined transmission format;
With
The predetermined transmission format is:
In the channel 0, one color information is assigned to each of the first transmission block and the second transmission block subsequent to the first transmission block,
In the channel 1, one luminance information is allocated to each of a third transmission block and a fourth transmission block subsequent to the third transmission block,
In the channel 2, one luminance information is allocated to each of the fifth transmission block and the sixth transmission block subsequent to the fifth transmission block,
A transmission apparatus having a format for transmitting the first to sixth transmission blocks at a timing corresponding to a predetermined number of the TMDS clocks. A reading means for reading the video data of the 4: 2: 0 format recorded on the optical disc;
11. The transmission apparatus according to claim 7, wherein the TMDS encoding unit performs TMDS encoding on luminance information and color information of video data read by the reading unit. A storage unit for storing the 4: 2: 0 format video data;
The transmission apparatus according to claim 7, wherein the TMDS encoding unit performs TMDS encoding on luminance information and color information of the video data in the 4: 2: 0 format stored in the storage unit. The transmission device according to any one of claims 1 to 12, wherein the transmission means transmits information indicating that video is transmitted in the predetermined transmission format in a blank area of a frame. Previous Symbol 4: 2: 0 format the video data, the number of horizontal pixels per one of one video frame line is a first value,
Said transmission means, all of the luminance information and the lust report of two of said lines of said one image frame, and transmits a differential signal corresponding to the TMDS clock number of the first value, claims The transmission device according to any one of 1 to 13 . The luminance information is a Y component of a pixel of the video data in the 4: 2: 0 format,
The color information is a Cb component or a Cr component of a pixel of the video data in the 4: 2: 0 format.
The transmission device according to claim 1. A transmission device that transmits video to an external device via channel 0, channel 1, and channel 2 of a transmission line that conforms to the HDMI standard, and reads video data in a format different from the 4 : 2: 0 format and means, the image data of the different formats that have been read, before Symbol 4: 2: 0 format conversion means for converting the video data, the number of horizontal pixels per one of one video frame line first value and the obtained by the conversion comprising 4: 2: 0 format and TMDS encoding means for TMDS encoding luminance information and lust paper of the video data, the differential a corresponding signal obtained by the TMDS encoding on the TMDS clock Transmitting means for transmitting as a signal in a predetermined transmission format, wherein the predetermined transmission format is the TM Assigning only the channel 0 as S coded transmission channel of the lust paper, the assigning only the channel 1 and the channel 2 as the transmission channel of the TMDS encoded the luminance information, the first value is a format for transmitting a differential signal and two of said luminance information and one of the lust report for each of the TMDS clock number, from the transmission device, a reception device for receiving the image data,
First receiving means for receiving information indicating that video is being transmitted in the predetermined transmission format;
Second receiving means via the channel 0 receive the lust paper, it receives the luminance information via the channel 1 and the channel 2,
The first reception hand stage, when receiving the information indicating that the transmitted video at the predetermined transmission format, is transmitted by the differential signal corresponding to the TMDS clock number of the first value an output means for the lust paper was received and using the luminance information, and outputs an image of two times the number of pixels of the number of said first value by said second receiving means,
A receiving device. A transmission device that transmits video to external devices via channel 0, channel 1, and channel 2 of a transmission line that conforms to the HDMI standard, and reads video data in a format different from the 4: 2: 0 format Means for converting the read video data of the different format into video data of the 4: 2: 0 format, and the number of horizontal pixels per line of one video frame is a first value. TMDS encoding means for TMDS encoding luminance information and color information of 4: 2: 0 format video data obtained by the conversion, and a differential signal corresponding to a TMDS clock signal obtained by the TMDS encoding Transmitting means for transmitting in a predetermined transmission format as the predetermined transmission format. 0, one color information is assigned to each of the first transmission block and the second transmission block subsequent to the first transmission block, and in the channel 1, the third transmission block and the third transmission block are assigned. One luminance information is allocated to each of the fourth transmission blocks subsequent to the block, and one is assigned to each of the fifth transmission block and the sixth transmission block subsequent to the fifth transmission block in the channel 2. The transmission apparatus, wherein the luminance information is allocated, the first, third, and fifth transmission blocks are transmitted at the same timing, and the second, fourth, and sixth transmission blocks are transmitted at the same timing. A receiving device for receiving the video data,
First receiving means for receiving information indicating that video is being transmitted in the predetermined transmission format;
Second receiving means for receiving the color information via the channel 0 and receiving the luminance information via the channel 1 and the channel 2;
When the first receiving means receives information indicating that video is being transmitted in the predetermined transmission format, the transmission of the number of the first value is performed in each of the channel 0, the channel 1, and the channel 2. Output means for outputting video of the number of pixels that is twice the number of the first value using the color information and the luminance information transmitted by being assigned to the block and received by the second receiving means When,
A receiving device. A transmission device that transmits video to external devices via channel 0, channel 1, and channel 2 of a transmission line that conforms to the HDMI standard, and reads video data in a format different from the 4: 2: 0 format Means for converting the read video data of the different format into video data of the 4: 2: 0 format, and the number of horizontal pixels per line of one video frame is a first value. TMDS encoding means for TMDS encoding luminance information and color information of 4: 2: 0 format video data obtained by the conversion, and a differential signal corresponding to a TMDS clock signal obtained by the TMDS encoding Transmitting means for transmitting in a predetermined transmission format as the predetermined transmission format. 0, one color information is assigned to each of the first transmission block and the second transmission block subsequent to the first transmission block, and in the channel 1, the third transmission block and the third transmission block are assigned. One luminance information is allocated to each of the fourth transmission blocks subsequent to the block, and one is assigned to each of the fifth transmission block and the sixth transmission block subsequent to the fifth transmission block in the channel 2. A receiving device for receiving the video data from the transmitting device, wherein the luminance information is allocated and the first to sixth transmission blocks are transmitted at a timing corresponding to a predetermined number of the TMDS clocks;
First receiving means for receiving information indicating that video is being transmitted in the predetermined transmission format;
Second receiving means for receiving the color information via the channel 0 and receiving the luminance information via the channel 1 and the channel 2;
When the first receiving means receives information indicating that video is being transmitted in the predetermined transmission format, the transmission of the number of the first value is performed in each of the channel 0, the channel 1, and the channel 2. Output means for outputting video of the number of pixels that is twice the number of the first value using the color information and the luminance information transmitted by being assigned to the block and received by the second receiving means When,
A receiving device. A transmission device that transmits video to an external device via channel 0, channel 1, and channel 2 of a transmission line that conforms to the HDMI standard, and the number of horizontal pixels per line of one video frame is the first a value 4: 2: 0 format and TMDS encoding means for TMDS encoding luminance information and lust report of video data, the predetermined as a differential signal corresponding to the signal obtained by the TMDS encoding on the TMDS clock and a transmitting means for transmitting the transmission format, the predetermined transmission format, the transmission of the TMDS encoded assigned only the channel 0 as the transmission channel of the lust paper, the luminance information the is TMDS encoded It said assigning only the channel 1 and the channel 2 as the channel, two front for each of the TMDS clock The luminance information and one of the lust paper is a format for transmitting a differential signal, from the transmitter, a receiver for receiving the image data,
First receiving means for receiving information indicating that video is being transmitted in the predetermined transmission format;
Second receiving means via the channel 0 receive the lust paper, it receives the luminance information via the channel 1 and the channel 2,
The first reception hand stage, when receiving the information indicating that the transmitted video at the predetermined transmission format, is transmitted by the differential signal corresponding to the TMDS clock number of the first value an output means for the lust paper was received and using the luminance information, and outputs an image of two times the number of pixels of the number of said first value by said second receiving means,
A receiving device. A transmission device that transmits video to an external device via channel 0, channel 1, and channel 2 of a transmission line that conforms to the HDMI standard, and the number of horizontal pixels per line of a video frame is the first. TMDS encoding means for TMDS encoding luminance information and color information of video data in 4: 2: 0 format, which is a value of the signal, and a signal obtained by the TMDS encoding as a differential signal corresponding to a TMDS clock Transmitting means for transmitting in a transmission format, wherein the predetermined transmission format is one for each of a first transmission block and a second transmission block subsequent to the first transmission block in the channel 0. Color information is allocated, and the third transmission block and the fourth transmission block following the third transmission block in the channel 1 are assigned. One luminance information is assigned to each of the fifth transmission block and the sixth transmission block subsequent to the fifth transmission block in the channel 2, and the first, A receiving device for receiving the video data from a transmitting device, wherein the third and fifth transmission blocks are transmitted at the same timing and the second, fourth, and sixth transmission blocks are transmitted at the same timing. There,
First receiving means for receiving information indicating that video is being transmitted in the predetermined transmission format;
Second receiving means for receiving the color information via the channel 0 and receiving the luminance information via the channel 1 and the channel 2;
When the first receiving means receives information indicating that video is being transmitted in the predetermined transmission format, the transmission of the number of the first value is performed in each of the channel 0, the channel 1, and the channel 2. Output means for outputting video of the number of pixels that is twice the number of the first value using the color information and the luminance information transmitted by being assigned to the block and received by the second receiving means When,
A receiving device. A transmission device that transmits video to an external device via channel 0, channel 1, and channel 2 of a transmission line that conforms to the HDMI standard, and the number of horizontal pixels per line of a video frame is the first. TMDS encoding means for TMDS encoding luminance information and color information of video data in 4: 2: 0 format, which is a value of the signal, and a signal obtained by the TMDS encoding as a differential signal corresponding to a TMDS clock Transmitting means for transmitting in a transmission format, wherein the predetermined transmission format is one for each of a first transmission block and a second transmission block subsequent to the first transmission block in the channel 0. Color information is allocated, and the third transmission block and the fourth transmission block following the third transmission block in the channel 1 are assigned. One luminance information is assigned to each of the first transmission information and the second transmission information in the channel 2 is assigned to a fifth transmission block and a sixth transmission block following the fifth transmission block. A receiving device for receiving the video data from a transmitting device, wherein the sixth transmission block is transmitted in a format corresponding to a predetermined number of the TMDS clocks;
First receiving means for receiving information indicating that video is being transmitted in the predetermined transmission format;
Second receiving means for receiving the color information via the channel 0 and receiving the luminance information via the channel 1 and the channel 2;
When the first receiving means receives information indicating that video is being transmitted in the predetermined transmission format, the transmission of the number of the first value is performed in each of the channel 0, the channel 1, and the channel 2. Output means for outputting video of the number of pixels that is twice the number of the first value using the color information and the luminance information transmitted by being allocated to the block and received by the second receiving means When,
A receiving device. The receiving device according to any one of claims 16 to 21, wherein the transmitting unit transmits information indicating that video is transmitted in the predetermined transmission format in a blank area of a frame. The receiving device according to any one of claims 16 to 22, further comprising a tuner that receives a broadcast signal of a television broadcast. The luminance information is a Y component of a pixel of the video data in the 4: 2: 0 format,
The color information is a Cb component or a Cr component of a pixel of the video data in the 4: 2: 0 format.
The receiving device according to any one of claims 16 to 23. A transmission method for transmitting video to an external device via channel 0, channel 1 and channel 2 of a transmission line compliant with the HDMI standard,
A step in which the reading means reads video data in a format different from the 4 : 2: 0 format;
The video data of the different formats that have been read, before Symbol 4: 2: 0 comprising the steps of format conversion means into image data is converted,
Obtained by the conversion of 4: 2: 0 comprising the steps of: formatting TMDS encoding unit luminance information and lust report of video data to TMDS encoding,
A step of transmitting a signal obtained by the TMDS encoding as a differential signal corresponding to a TMDS clock in a predetermined transmission format;
Have
It said predetermined transmission format, assignment only the channel 0 as the TMDS encoded transmission channel of the lust paper, assigned only the channel 1 and the channel 2 as the transmission channel of the TMDS encoded the luminance information Te, and two of said luminance information and one of the lust report for each of the TMDS clock is a format for transmitting differential signals, transmitting method. A transmission method for transmitting video to an external device via channel 0, channel 1 and channel 2 of a transmission line compliant with the HDMI standard,
Reading video data in a format different from 4: 2: 0 format;
Converting the read video data of the different format into video data of the 4: 2: 0 format;
TMDS encoding luminance information and color information of 4: 2: 0 format video data obtained by the conversion;
Transmitting a signal obtained by the TMDS encoding in a predetermined transmission format as a differential signal corresponding to a TMDS clock;
Have
In the predetermined transmission format, only the channel 0 is assigned as the transmission channel for the TMDS-encoded color information, and only the channel 1 and the channel 2 are assigned as the transmission channels for the luminance information encoded by the TMDS. A transmission method, which is a format in which a plurality of pieces of information each including two pieces of luminance information and one piece of color information are sequentially transmitted. A transmission method for transmitting video to an external device via channel 0, channel 1 and channel 2 of a transmission line compliant with the HDMI standard,
Reading video data in a format different from 4: 2: 0 format;
Converting the read video data of the different format into video data of the 4: 2: 0 format;
TMDS encoding luminance information and color information of 4: 2: 0 format video data obtained by the conversion;
Transmitting a signal obtained by the TMDS encoding in a predetermined transmission format as a differential signal corresponding to a TMDS clock;
Have
The predetermined transmission format is:
In the channel 0, one color information is assigned to each of the first transmission block and the second transmission block subsequent to the first transmission block,
In the channel 1, one luminance information is allocated to each of a third transmission block and a fourth transmission block subsequent to the third transmission block,
In the channel 2, one luminance information is allocated to each of the fifth transmission block and the sixth transmission block subsequent to the fifth transmission block,
A transmission method, wherein the first, third, and fifth transmission blocks are transmitted at the same timing, and the second, fourth, and sixth transmission blocks are transmitted at the same timing. A transmission method for transmitting video to an external device via channel 0, channel 1 and channel 2 of a transmission line compliant with the HDMI standard,
Reading video data in a format different from 4: 2: 0 format;
Converting the read video data of the different format into video data of the 4: 2: 0 format;
TMDS encoding luminance information and color information of 4: 2: 0 format video data obtained by the conversion;
Transmitting a signal obtained by the TMDS encoding in a predetermined transmission format as a differential signal corresponding to a TMDS clock;
Have
The predetermined transmission format is:
In the channel 0, one color information is assigned to each of the first transmission block and the second transmission block subsequent to the first transmission block,
In the channel 1, one luminance information is allocated to each of a third transmission block and a fourth transmission block subsequent to the third transmission block,
In the channel 2, one luminance information is allocated to each of the fifth transmission block and the sixth transmission block subsequent to the fifth transmission block,
A transmission method, which is a format for transmitting the first to sixth transmission blocks at a timing corresponding to a predetermined number of the TMDS clocks. A transmission method for transmitting video to an external device via channel 0, channel 1 and channel 2 of a transmission line compliant with the HDMI standard,
TMDS encoding luminance information and color information of video data in 4: 2: 0 format;
Transmitting a signal obtained by the TMDS encoding in a predetermined transmission format as a differential signal corresponding to a TMDS clock;
Have
In the predetermined transmission format, only the channel 0 is assigned as the transmission channel for the TMDS-encoded color information, and only the channel 1 and the channel 2 are assigned as the transmission channels for the luminance information encoded by the TMDS. The transmission method is a format in which two pieces of luminance information and one piece of color information are transmitted as differential signals for each TMDS clock. There is a transmission method for transmitting video to an external device via channel 0, channel 1 and channel 2 of a transmission line compliant with the HDMI standard.
TMDS encoding luminance information and color information of video data in 4: 2: 0 format;
Transmitting a signal obtained by the TMDS encoding in a predetermined transmission format as a differential signal corresponding to a TMDS clock;
Have
In the predetermined transmission format, only the channel 0 is assigned as the transmission channel for the TMDS-encoded color information, and only the channel 1 and the channel 2 are assigned as the transmission channels for the luminance information encoded by the TMDS. A transmission method is a format in which a plurality of pieces of information each including two pieces of luminance information and one piece of color information are transmitted continuously in time. A transmission method for transmitting video to an external device via channel 0, channel 1 and channel 2 of a transmission line compliant with the HDMI standard,
TMDS encoding luminance information and color information of video data in 4: 2: 0 format;
Transmitting a signal obtained by the TMDS encoding in a predetermined transmission format as a differential signal corresponding to a TMDS clock;
Have
The predetermined transmission format is:
In the channel 0, one color information is assigned to each of the first transmission block and the second transmission block subsequent to the first transmission block,
In the channel 1, one luminance information is allocated to each of a third transmission block and a fourth transmission block subsequent to the third transmission block,
In the channel 2, one luminance information is allocated to each of the fifth transmission block and the sixth transmission block subsequent to the fifth transmission block,
A transmission method, wherein the first, third, and fifth transmission blocks are transmitted at the same timing, and the second, fourth, and sixth transmission blocks are transmitted at the same timing. A transmission method for transmitting video to an external device via channel 0, channel 1 and channel 2 of a transmission line compliant with the HDMI standard,
TMDS encoding luminance information and color information of video data in 4: 2: 0 format;
Transmitting a signal obtained by the TMDS encoding in a predetermined transmission format as a differential signal corresponding to a TMDS clock;
Have
The predetermined transmission format is:
In the channel 0, one color information is assigned to each of the first transmission block and the second transmission block subsequent to the first transmission block,
In the channel 1, one luminance information is allocated to each of a third transmission block and a fourth transmission block subsequent to the third transmission block,
In the channel 2, one luminance information is allocated to each of the fifth transmission block and the sixth transmission block subsequent to the fifth transmission block,
A transmission method, which is a format for transmitting the first to sixth transmission blocks at a timing corresponding to a predetermined number of the TMDS clocks. The luminance information is a Y component of a pixel of the video data in the 4: 2: 0 format,
The color information is a Cb component or a Cr component of a pixel of the video data in the 4: 2: 0 format.
The transmission method according to any one of claims 25 to 32. A transmission device that transmits video to an external device via channel 0, channel 1, and channel 2 of a transmission line that conforms to the HDMI standard, and reads video data in a format different from the 4 : 2: 0 format and means, the image data of the different formats that have been read, before Symbol 4: 2: 0 format conversion means for converting the video data, the number of horizontal pixels per one of one video frame line first value and the obtained by the conversion comprising 4: 2: 0 format and TMDS encoding means for TMDS encoding luminance information and lust paper of the video data, the differential a corresponding signal obtained by the TMDS encoding on the TMDS clock Transmitting means for transmitting as a signal in a predetermined transmission format, wherein the predetermined transmission format is the TM Assigning only the channel 0 as S coded transmission channel of the lust paper, the assigning only the channel 1 and the channel 2 as the transmission channel of the TMDS encoded the luminance information, the first value is a format for transmitting a differential signal and two of said luminance information and one of the lust report for each of the TMDS clock number, from the transmission device, a reception method for receiving the video data,
A step of first receiving means for receiving the information,
A step second receiving means, for receiving the color information via the channel 1 and the channel 2 received and the luminance information via the channel 0,
If the first receiving means information indicating that the transmitted video received in the previous SL predetermined transmission format, it is transmitted by the differential signal corresponding to the TMDS clock number of the first value a step of using the lust paper and the brightness information received, the first output means twice the video in the number of pixels having values output by said second receiving means,
Receiving method. A transmission device that transmits video to external devices via channel 0, channel 1, and channel 2 of a transmission line that conforms to the HDMI standard, and reads video data in a format different from the 4: 2: 0 format Means for converting the read video data of the different format into video data of the 4: 2: 0 format, and the number of horizontal pixels per line of one video frame is a first value. TMDS encoding means for TMDS encoding luminance information and color information of 4: 2: 0 format video data obtained by the conversion, and a differential signal corresponding to a TMDS clock signal obtained by the TMDS encoding Transmitting means for transmitting in a predetermined transmission format as the predetermined transmission format. 0, one color information is assigned to each of the first transmission block and the second transmission block subsequent to the first transmission block, and in the channel 1, the third transmission block and the third transmission block are assigned. One luminance information is allocated to each of the fourth transmission blocks subsequent to the block, and one is assigned to each of the fifth transmission block and the sixth transmission block subsequent to the fifth transmission block in the channel 2. The transmission apparatus, wherein the luminance information is allocated, the first, third, and fifth transmission blocks are transmitted at the same timing, and the second, fourth, and sixth transmission blocks are transmitted at the same timing. A receiving method for receiving the video data,
A first receiving means receiving information;
Second receiving means receives the color information via the channel 0 and receives the luminance information via the channel 1 and the channel 2;
When the first receiving means receives information indicating that video is being transmitted in the predetermined transmission format, the transmission of the number of the first value is performed in each of the channel 0, the channel 1, and the channel 2. Outputting the image of the number of pixels that is twice the number of the first value using the color information and the luminance information transmitted by being allocated to the block and received by the second receiving means; ,
Receiving method. A transmission device that transmits video to external devices via channel 0, channel 1, and channel 2 of a transmission line that conforms to the HDMI standard, and reads video data in a format different from the 4: 2: 0 format Means for converting the read video data of the different format into video data of the 4: 2: 0 format, and the number of horizontal pixels per line of one video frame is a first value. TMDS encoding means for TMDS encoding luminance information and color information of 4: 2: 0 format video data obtained by the conversion, and a differential signal corresponding to a TMDS clock signal obtained by the TMDS encoding Transmitting means for transmitting in a predetermined transmission format as the predetermined transmission format. 0, one color information is assigned to each of the first transmission block and the second transmission block subsequent to the first transmission block, and in the channel 1, the third transmission block and the third transmission block are assigned. One luminance information is allocated to each of the fourth transmission blocks subsequent to the block, and one is assigned to each of the fifth transmission block and the sixth transmission block subsequent to the fifth transmission block in the channel 2. A reception method for receiving the video data from the transmission device, wherein the luminance information is allocated and the first to sixth transmission blocks are transmitted at a timing corresponding to a predetermined number of the TMDS clocks.
A first receiving means receiving information;
Second receiving means receives the color information via the channel 0 and receives the luminance information via the channel 1 and the channel 2;
When the first receiving means receives information indicating that video is being transmitted in the predetermined transmission format, the number of transmission blocks corresponding to the first value in each of the channel 0, the channel 1, and the channel 2 Outputting the image of the number of pixels twice the number of the first value using the color information and the luminance information transmitted by being allocated to the second reception means; and
Receiving method. A transmission device that transmits video to an external device via channel 0, channel 1, and channel 2 of a transmission line that conforms to the HDMI standard, and the number of horizontal pixels per line of a video frame is the first. TMDS encoding means for TMDS encoding luminance information and color information of video data in 4: 2: 0 format, which is a value of the signal, and a signal obtained by the TMDS encoding as a differential signal corresponding to a TMDS clock Transmitting means for transmitting in a transmission format, wherein the predetermined transmission format allocates only the channel 0 as a transmission channel for the color information that has been TMDS encoded, and transmits the luminance information that has been TMDS encoded. Only the channel 1 and the channel 2 are assigned as channels, and the two channels are assigned to each TMDS clock. The degree information and one of the color information is a format for transmitting a differential signal, from the transmission apparatus, a reception method for receiving the video data,
A first receiving means receiving information;
Second receiving means receives the color information via the channel 0 and receives the luminance information via the channel 1 and the channel 2;
When the first receiving means receives information indicating that video is being transmitted in the predetermined transmission format, it is transmitted by a differential signal corresponding to the number of the TMDS clocks of the first value, Using the color information and the luminance information received by the second receiving means to output a video of a number of pixels twice the number of the first values;
Receiving method. A transmission device that transmits video to an external device via channel 0, channel 1, and channel 2 of a transmission line that conforms to the HDMI standard, and the number of horizontal pixels per line of a video frame is the first. TMDS encoding means for TMDS encoding luminance information and color information of video data in 4: 2: 0 format, which is a value of the signal, and a signal obtained by the TMDS encoding as a differential signal corresponding to a TMDS clock Transmitting means for transmitting in a transmission format, wherein the predetermined transmission format is one for each of a first transmission block and a second transmission block subsequent to the first transmission block in the channel 0. Color information is allocated, and the third transmission block and the fourth transmission block following the third transmission block in the channel 1 are assigned. One luminance information is assigned to each of the fifth transmission block and the sixth transmission block subsequent to the fifth transmission block in the channel 2, and the first, A receiving method for receiving the video data from a transmitting apparatus, wherein the third and fifth transmission blocks are transmitted at the same timing, and the second, fourth and sixth transmission blocks are transmitted at the same timing. There,
A first receiving means receiving information;
Second receiving means receives the color information via the channel 0 and receives the luminance information via the channel 1 and the channel 2;
When the first receiving means receives information indicating that video is being transmitted in the predetermined transmission format, the transmission of the number of the first value is performed in each of the channel 0, the channel 1, and the channel 2. Outputting the image of the number of pixels that is twice the number of the first value using the color information and the luminance information transmitted by being allocated to the block and received by the second receiving means; ,
Receiving method. A transmission device that transmits video to an external device via channel 0, channel 1, and channel 2 of a transmission line that conforms to the HDMI standard, and the number of horizontal pixels per line of a video frame is the first. TMDS encoding means for TMDS encoding luminance information and color information of video data in 4: 2: 0 format, which is a value of the signal, and a signal obtained by the TMDS encoding as a differential signal corresponding to a TMDS clock Transmitting means for transmitting in a transmission format, wherein the predetermined transmission format is one for each of a first transmission block and a second transmission block subsequent to the first transmission block in the channel 0. Color information is allocated, and the third transmission block and the fourth transmission block following the third transmission block in the channel 1 are assigned. One luminance information is assigned to each of the first transmission information and the second transmission information in the channel 2 is assigned to a fifth transmission block and a sixth transmission block following the fifth transmission block. A reception method for receiving the video data from a transmission device, which is a format for transmitting a sixth transmission block at a timing corresponding to a predetermined number of the TMDS clocks,
A first receiving means receiving information;
Second receiving means receives the color information via the channel 0 and receives the luminance information via the channel 1 and the channel 2;
When the first receiving means receives information indicating that video is being transmitted in the predetermined transmission format, the transmission of the number of the first value is performed in each of the channel 0, the channel 1, and the channel 2. Using the color information and the luminance information transmitted by being assigned to a block and received by the second receiving means, and outputting a picture of pixels having twice the number of the first values;
Receiving method. The luminance information is a Y component of a pixel of the video data in the 4: 2: 0 format,
The color information is a Cb component or a Cr component of a pixel of the video data in the 4: 2: 0 format.
40. A receiving method according to any of claims 34 to 39.

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