Data transmission method and data transmission system
A data transmission method and system for enhanced channel coding efficiency of a DisplayPort interface is disclosed. One method comprises transmitting a plurality of coding units for each micro-packet in each of one or more lanes of a DisplayPort Main Link from a DisplayPort transmitter, wherein each of the coding units comprises: a group of m symbol chunks, each symbol chunk including four 8-bit symbols, wherein m is 2 or 4; and an n-bit code data indicator that precedes the group of m-symbol chunks, wherein n is 2 or 4, and wherein the n-bit code data indicator indicates a content type of the m symbol chunks.
1. A method comprising:
transmitting a plurality of coding units for each micro-packet in each of one or more lanes of a DisplayPort Main Link from a DisplayPort transmitter, wherein each of the coding units comprises:
a group of m symbol chunks, each symbol chunk including four 8-bit symbols, wherein m is 2 or 4, and wherein all of the symbol chunks in the group have one of a plurality of content types; and
an n-bit code data indicator, wherein n is 2 or 4, wherein the n-bit code data indicator indicates the one of the plurality of content types.
2. The method of claim 1 , wherein the content types comprise:
a data link symbol, or one or more of a control link symbol, a Reed Solomon (RS) parity symbol, or a PHY sync symbol.
3. The method of claim 1 , further comprising:
transmitting eight coding units per lane in each of four lanes of the DisplayPort Main Link for each micro-packet.
4. The method of claim 1 , further comprising:
transmitting 16 coding units per lane in each of two lanes of the DisplayPort Main Link for each micro-packet.
5. The method of claim 1 , further comprising:
transmitting 32 coding units per lane in a single lane of the DisplayPort Main Link for each micro-packet.
6. A method comprising:
receiving a plurality of coding units for each micro-packet in each of one or more lanes of a DisplayPort Main Link from a DisplayPort transmitter, wherein each of the coding units comprises:
a group of m symbol chunks, each symbol chunk including four 8-bit symbols, wherein m is 2 or 4, and wherein all of the symbol chunks in the group have one of a plurality of content types; and
an n-bit code data indicator, wherein n is 2 or 4, wherein the n-bit code data indicator indicates the one of the plurality of content types.
7. The method of claim 6 , wherein the content types comprise:
a data link symbol, or one or more of a control link symbol, a Reed Solomon (RS) parity symbol, or a PHY sync symbol.
8. The method of claim 6 , further comprising:
receiving eight coding units per lane in each of four lanes of the DisplayPort Main Link for each micro-packet.
9. The method of claim 6 , further comprising:
receiving 16 coding units per lane in each of two lanes of the DisplayPort Main Link for each micro-packet.
10. The method according to claim 6 , further comprising:
receiving 32 coding units per lane in a single lane of the DisplayPort Main Link for each micro-packet.
11. A transmission device for a DisplayPort interface comprising:
one or more lane serializer-drivers; and
a PHY logical sub-layer configured to arrange and transmit data to the one or more lane serializer-drivers, wherein the data comprises a plurality of coding units for each micro-packet directed to each of the one or more lane serializer-drivers, and wherein each of the coding units comprises:
a group of m symbol chunks, each symbol chunk including four 8-bit symbols, wherein m is 2 or 4, and wherein all of the symbol chunks in the group have one of a plurality of content types; and
an n-bit code data indicator, wherein n is 2 or 4, wherein the n-bit code data indicator indicates the one of the plurality of content types.
12. The transmission device of claim 11 , wherein the content types comprise:
a data link symbol, or one or more of a control link symbol, a Reed Solomon (RS) parity symbol, or a PHY sync symbol.
13. The transmission device of claim 11 , wherein eight coding units per lane are transmitted for each micro-packet in each of four lanes of the DisplayPort Main Link.
14. The transmission device of claim 11 , wherein 16 coding units per lane are transmitted for each micro-packet in each of two lanes of the DisplayPort Main Link.
15. The transmission device of claim 11 , wherein 32 coding units per lane are transmitted for each micro-packet in a single lane of the DisplayPort Main Link.
16. The transmission device of claim 11 , further comprising:
one or more High-bandwidth Digital Content Protection (HDCP) encryption circuits communicatively coupled to the PHY logical sub-layer element for encrypting data.
17. The transmission device of claim 11 , wherein the PHY logical sub-layer is further configured to perform Reed Solomon (RS) Forward Error Correction on the data.
18. A reception device for a DisplayPort interface comprising:
a receiver configured to receive a plurality of coding units for each micro-packet in each of one or more lanes of a DisplayPort Main Link from a DisplayPort transmitter, wherein each of the coding units comprises:
a group of m symbol chunks, each symbol chunk including four 8-bit symbols, wherein m is 2 or 4, and wherein all of the symbol chunks in the group have one of a plurality of content types; and
an n-bit code data indicator, wherein n is 2 or 4, wherein the n-bit code data indicator indicates the one of the plurality of content types.
19. The reception device of claim 18 , wherein the content types comprise:
a data link symbol, or one or more of a control link symbol, a Reed Solomon (RS) parity symbol, or a PHY sync symbol.
20. The reception device of claim 18 , wherein eight coding units per lane are received for each micro-packet in each of four lanes of the DisplayPort Main Link.
21. The reception device of claim 18 , wherein 16 coding units per lane are received for each micro-packet in each of two lanes of the DisplayPort Main Link.
22. The reception device of claim 18 , wherein 32 coding units per lane are received for each micro-packet in a single lane of the DisplayPort Main Link.