Communication device and communication method

An electronic apparatus configured to receive a signal via a HDMI cable, the electronic apparatus comprising:

• a terminal configured to receive a Transition Minimized Differential Signaling (TMDS) differential signal comprising encoded video data via channels 0, 1, and 2 of the HDMI cable, a format of the video data is YCbCr 4:2:0;
• processor circuitry configured to:
• receive the TMDS differential signal via the terminal, when the electronic apparatus supports for YCbCr 4:2:0,
• wherein the TMDS differential signal comprises (1) a first luminance value of a first pixel, (2) a second luminance value of a second pixel, (3) a third luminance value of a third pixel, (4) a fourth luminance value of a fourth pixel, (5) a first color difference value for at least both the first pixel and the second pixel, and (6) a second color difference value, the second pixel is adjacent to the first pixel for at least both the third pixel and the fourth pixel, the third pixel is adjacent to the second pixel, and the fourth pixel is adjacent to the third pixel;
• and
• decode the TMDS differential signal to generate a decoded video data;
• and
• a display configured to display a video of the decoded video data,
• wherein the terminal is configured to receive the first color difference value via the channel 0 within a first TMDS clock, the first luminance value via the channel 1 within the first TMDS clock, the second luminance value via the channel 2 within the first TMDS clock, the second color difference value via the channel 0 within a second TMDS clock next to the first TMDS clock, the third luminance value via the channel 1 within the second TMDS clock, the fourth luminance value via the channel 2 within the second TMDS clock.

A method for communicating with an external apparatus via an HDMI cable, the method comprising:

• receiving video data comprising a first pixel, a second pixel, a third pixel, and a fourth pixel, wherein the first pixel is adjacent to the second pixel, and the third pixel is adjacent to the fourth pixel;
• encoding the video data by a Transition Minimized Differential Signaling (TMDS) encoder to generate a TMDS differential signal comprising the video data, and a format of the video data is YCbCr 4:2:0,
• wherein the TMDS differential signal comprises (1) a first luminance value of the first pixel, (2) a second luminance value of the second pixel, (3) a third luminance value of the third pixel, (4) a fourth luminance value of the fourth pixel, (5) a first color difference value for at least both the first pixel and the second pixel, and (6) a second color difference value for at least both the third pixel and the fourth pixel;
• and
• transmitting the TMDS differential signal via channels 0, 1, and 2 of the HDMI cable by allocating the first color difference value to the channel 0 within a first TMDS clock, allocating the first luminance value to the channel 1 within the first TMDS clock, allocating the second luminance value to the channel 2 within the first TMDS clock, allocating the second color difference value to the channel 0 within a second TMDS clock next to the first TMDS clock, allocating the third luminance value to the channel 1 within the second TMDS clock, and allocating the fourth luminance value with the channel 2 within the second TMDS clock.

A method for communicating with an external apparatus via an HDMI cable, the method comprising:

• receiving a Transition Minimized Differential Signaling (TMDS) differential signal comprising encoded video data by a terminal via channels 0, 1, and 2 of the HDMI cable, a format of the video data is YCbCr 4:2:0;
• wherein the TMDS differential signal the encoded video data comprises (1) a first luminance value of a first pixel, (2) a second luminance value of a second pixel, (3) a third luminance value of a third pixel, (4) a fourth luminance value of a fourth pixel, (5) a first color difference value for at least both the first pixel and the second pixel, and (6) a second color difference value, the second pixel is adjacent to the first pixel for at least both the third pixel and the fourth pixel, the third pixel is adjacent to the second pixel, and the fourth pixel is adjacent to the third pixel;
• and
• decoding the TMDS differential signal to generate a decoded video data;
• and
• displaying a video of the decoded video data,
• wherein the terminal is configured to receive the first color difference value via the channel 0 within a first TMDS clock, the first luminance value via the channel 1 within the first TMDS clock, the second luminance value via the channel 2 within the first TMDS clock, the second color difference value via the channel 0 within a second TMDS clock next to the first TMDS clock, the second color difference value via the channel 0 within a second TMDS clock next to the first TMDS clock, the third luminance value via the channel 1 within the second TMDS clock, the fourth luminance value via the channel 2 within the second TMDS clock.