Method, apparatus and system for communicating sideband data with non-compressed video
View Patent ↗Techniques and mechanisms for communicating sideband information in a data frame including video data. In an embodiment, a data frame is exchanged between two device via a hardware interconnect which is compatible with physical layer requirements of an interface specification. The interface specification identifies a data frame format comprising a total of X consecutive horizontal lines of vertical blanking data and a total of Y consecutive horizontal lines of data including video data. In another embodiment, vertical blanking data of the data frame includes only (X−N) consecutive horizontal lines of data. Active data of the data frame includes N horizontal lines of data including sideband data, and Y additional horizontal lines of data including video data.
1. A device comprising:
first circuitry to receive first sideband data of a first data frame and first video data of the first data frame, including the first circuitry to receive the first sideband data during a first vertical blanking period;
second circuitry to generate a second data frame based on the received first data frame; and
third circuitry to transmit the second data frame via a hardware interconnect compatible with physical layer requirements of an interface specification, wherein the interface specification includes a data frame format comprising a total of X consecutive horizontal lines of vertical blanking data and a total of Y consecutive horizontal lines of data including video data, the third circuitry to transmit the second data frame including:
during a data disable period, the third circuitry to transmit vertical blanking data, including the third circuitry to transmit only (X−N) consecutive horizontal lines of data; and
during a data enable period:
the third circuitry to transmit second sideband data based on the first sideband data, including the third circuitry to transmit N horizontal lines of data; and
the third circuitry to transmit non-compressed video data, including the third circuitry to transmit Y horizontal lines of data, wherein X is a first integer, Y is a second integer, and N is a third integer.
2. The device of claim 1 , wherein the third circuitry to transmit the second sideband data includes the third circuitry to transmit double samples of a sideband data value.
3. The device of claim 2 , wherein the hardware interconnect includes three data signal lines, and wherein, of the three data signal lines, the third circuitry is to transmit the second sideband data with only two data signal lines.
4. The device of claim 1 , wherein the interface specification is a High-Definition Multimedia Interface specification or a Mobile High-definition Link specification.
5. The device of claim 1 , wherein the second sideband data includes closed caption data or teletext data.
6. A device comprising:
first circuitry to receive a first data frame via a hardware interconnect compatible with physical layer requirements of an interface specification, wherein the interface specification includes a data frame format comprising a total of X consecutive horizontal lines of vertical blanking data and a total of Y consecutive horizontal lines of data including video data, the first circuitry to receive the first data frame including:
during a data disable period, the first circuitry to receive vertical blanking data, including the first circuitry to receive only (X−N) consecutive horizontal lines of data; and
during a data enable period:
the first circuitry to receive first sideband data, including the first circuitry to receive N horizontal lines of data; and
the first circuitry to receive first non-compressed video data, including the first circuitry to receive Y horizontal lines of data, wherein X is a first integer, Y is a second integer, and N is a third integer; and
second circuitry to generate second non-compressed video data based on the first non-compressed video data and the first sideband data.
7. The device of claim 6 , wherein the first circuitry to receive the first sideband data includes the first circuitry to receive double samples of a sideband data value.
8. The device of claim 7 , wherein the hardware interconnect includes three data signal lines, and wherein, of the three data signal lines, the first circuitry is to receive the first sideband data with only two data signal lines.
9. The device of claim 6 , wherein the interface specification is a High-Definition Multimedia Interface specification or a Mobile High-definition Link specification.
10. The device of claim 6 , wherein the first sideband data includes closed caption data or teletext data.
11. A method comprising:
receiving first sideband data of a first data frame and first video data of the first data frame, including receiving the first sideband data during a first vertical blanking period;
generating a second data frame based on the received first data frame; and
transmitting the second data frame via a hardware interconnect compatible with physical layer requirements of an interface specification, wherein the interface specification includes a data frame format comprising a total of X consecutive horizontal lines of vertical blanking data and a total of Y consecutive horizontal lines of data including video data, the transmitting the second data frame including:
during a data disable period, transmitting vertical blanking data, including transmitting only (X−N) consecutive horizontal lines of data; and
during a data enable period:
transmitting second sideband data based on the first sideband data, including transmitting N horizontal lines of data; and
transmitting non-compressed video data, including transmitting Y horizontal lines of data, wherein X is a first integer, Y is a second integer, and N is a third integer.
12. The method of claim 11 , wherein transmitting the second sideband data includes transmitting double samples of a sideband data value.
13. The method of claim 12 , wherein the hardware interconnect includes three data signal lines, and wherein, of the three data signal lines, transmitting the second sideband data includes transmitting with only two data signal lines.
14. The method of claim 11 , wherein the interface specification is a High-Definition Multimedia Interface specification or a Mobile High-definition Link specification.
15. The method of claim 11 , wherein the second sideband data includes closed caption data or teletext data.
16. A method comprising:
receiving a first data frame via a hardware interconnect compatible with physical layer requirements of an interface specification, wherein the interface specification includes a data frame format comprising a total of X consecutive horizontal lines of vertical blanking data and a total of Y consecutive horizontal lines of data including video data, the receiving the first data frame including:
during a data disable period, receiving vertical blanking data, including receiving only (X−N) consecutive horizontal lines of data; and
during a data enable period:
receiving first sideband data, including receiving N horizontal lines of data; and
receiving first non-compressed video data, including receiving Y horizontal lines of data, wherein X is a first integer, Y is a second integer, and N is a third integer; and
generating second non-compressed video data based on the first non-compressed video data and the first sideband data.
17. The method of claim 16 , wherein receiving the first sideband data includes receiving double samples of a sideband data value.
18. The method of claim 17 , wherein the hardware interconnect includes three data signal lines, and wherein, of the three data signal lines, receiving the first sideband data includes receiving with only two data signal lines.
19. The method of claim 16 , wherein the interface specification is a High-Definition Multimedia Interface specification or a Mobile High-definition Link specification.
20. The method of claim 16 , wherein the first sideband data includes closed caption data or teletext data.