System and method for providing data commonality in a programmable transport demultiplexer engine

• US 8,098,657 B2
• Filed: 01/10/2006
• Issued: 01/17/2012
• Est. Priority Date: 05/31/2005
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Rodgers, Stephane W.
• Primary Examiner(s): Ton, Dang
• Assistant Examiner(s): Zhao, Wei
• Application Number:
  US11/328,877
• Publication Number:
  US 20060268864A1
• Time in Patent Office: 2,198 Days
• Field of Search: 370/389, 370/465, 704/270, 709/231
• US Class Current: 370/389
• CPC Class Codes: H04N 21/42615 involving specific demultiplexing arrangements
• CPC Class Codes: H04N 21/434 Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream demultiplexing of data packets for data networks, e.g. RTP/UDP H04L65/00

Abstract

A method and system are provided for providing data commonality in a programmable transport demultiplexer engine. The method may involve utilizing a hardware assist block to process a portion of an incoming data packet, which may result in a partially processed data packet. The data packet may comprise data in any one of video formats and/or audio formats. A firmware block may then execute a plurality of instructions to process the partially processed data packet. The plurality of instructions may be independent of video and/or audio formats associated with the data packet.

Claims

1. A system for processing a plurality of data packets, said system comprising:

a first circuit for processing a portion of a packet, thereby resulting in a partially processed packet, said processing comprising transcoding data of said portion of said packet into a common format, wherein the packet comprises data in any one of a plurality of video or audio formats, said first circuit comprising;

a plurality of first parsing units operable for first parsing the data packets, wherein the plurality of first parsing units performs a portion of said processing of the packet by way of parsing based on a type of format of the packet and outputs a first information associated with the packet;

a plurality of second parsing units operable for second parsing the first information associated with the packet, and outputting a second information associated with the packet;

a subcircuitry for organizing the second information; and

a memory for storing the organized second information, wherein the second information is input into the second circuit; and

a second circuit for executing a plurality of instructions, wherein execution of said plurality of instructions causes processing of the partially processed packet, and wherein said plurality of instructions is independent of said plurality of video or audio formats.

2. The system according to claim 1, wherein processing a portion of the packet comprises:

determining a format associated with the packet;

preprocessing the packet in a first parsing unit based on the format of the packet;

extracting information from the preprocessed packet in a second parsing unit; and

writing the extracted information regarding the packet to a memory.

3. The system according to claim 1, wherein said processing the partially processed packet comprises:

reading information regarding the packet from a memory;

processing the partially processed packet using the read information; and

outputting the processed packet.

4. The system according to claim 1, wherein the first circuit comprises a first subcircuit for processing MPEG data, a second subcircuit for processing DirectTV data, and a third subcircuit for processing DVD/program stream data.

5. The system according to claim 1, wherein the second circuit comprises a processor used for executing said plurality of instructions.

6. The system according to claim 1 wherein the first circuit is bypassed and the data is wholly processed by said second circuit.

13. The system of claim 1 wherein the video formats comprises MPEG, VC1, or AVC.

14. The system of claim 1 wherein the audio formats comprises AC3 and AAC.

15. The system of claim 1 wherein processing the portion of the packet performs error parsing.

16. The system of claim 1 wherein processing the portion of the packet performs adaptation field parsing.

17. The system of claim 1 wherein processing the portion of the packet performs PES header parsing.

18. The system of claim 1 wherein processing the portion of the packet performs PTS/DTS (Presentation/Decode Time Stamp) extraction.

19. The system of claim 1 wherein processing the portion of the packet locates ES bytes in the packet.

20. The system of claim 1 wherein processing the portion of the packet performs data stream pattern comparisons.

7. A method for processing a plurality of data packets, said method comprising:

processing a portion of a packet comprising;

first parsing the packet resulting in parsed first information associated with the packet;

second parsing the parsed first information associated with the packet resulting in parsed second information associated with the packet;

organizing the parsed second information associated with the packet; and

storing the organized parsed second information associated with the packet, thereby resulting in a partially processed packet, said processing comprising transcoding data of said portion of said packet into a common format, wherein the packet comprises data in any one of a plurality of at least one of video and audio formats; and

executing a plurality of instructions, wherein execution of said plurality of instructions causes processing of the partially processed packet, and wherein the plurality of instructions is independent of said any one of a plurality of at least one of video and audio formats.

8. The method according to claim 7, wherein processing a portion of the first packet comprises:

determining a format associated with the packet;

preprocessing the packet in a first parsing unit based on the format of the packet;

extracting information from the preprocessed packet in a second parsing unit; and

writing the extracted information regarding the packet to a memory.

9. The method according to claim 7, wherein processing the partially processed first packet comprises:

reading information regarding the packet from a memory;

processing the partially processed packet using the read information; and

outputting the processed packet.

10. The method according to Claim 7, wherein said first parsing comprises at least one of:

parsing MPEG data;

parsing DirecTV data; and

parsing DVD/program stream data.

11. The method according to claim 7, wherein a processor is operable to execute the plurality of instructions.

12. The method according to claim 7 wherein the processing of the portion of the packet is bypassed.

21. The method of claim 7 wherein the video formats comprises MPEG, VC1, or AVC.

22. The method of claim 7 wherein the audio formats comprises AC3 and AAC.

23. The method of claim 7 wherein processing the portion of the packet performs error parsing.

24. The method of claim 7 wherein processing the portion of the packet performs adaptation field parsing.

25. The method of claim 7 wherein processing the portion of the packet performs PES header parsing.

26. The method of claim 7 wherein processing the portion of the packet performs PTS/DTS (Presentation/Decode Time Stamp) extraction.

27. The method of claim 7 wherein processing the portion of the packet locates ES bytes in the packet.

28. The method of claim 7 wherein processing the portion of the packet performs data stream pattern comparisons.

29. A system for processing data efficiently comprising:

one or more circuits operable for, at least;

receiving data packets in one or more formats;

first parsing said data packets to generate first parsed data packets;

first processing said first parsed data packets to yield transcoded data packets having a common format; and

storing said transcoded data packets into a memory; and

a processor operable for, at least;

reading said transcoded data packets from said memory; and

executing a set of instructions that is common to said one or more formats, said executing to perform;

second parsing of said received data packets if said first parsing was bypassed; and

second processing of said transcoded data packets, wherein said set of instructions is independent of said one or more formats.

30. The system of claim 29 wherein said data packets comprises MPEG data packets.

31. The system of claim 29 wherein said data packets comprises DirecTV data packets.

32. The system of claim 29 wherein said data packets comprises DVD/program stream data packets.

33. The system of claim 29 wherein said data packets comprises video data formatted using MPEG, VC1, or AVC.

34. The system of claim 29 wherein said data packets comprises audio data formatted using AC3 and AAC.

35. The system of claim 29 wherein said first parsing comprises error parsing.

36. The system of claim 29 wherein said first parsing comprises adaptation field parsing.

37. The system of claim 29 wherein said first parsing comprises PES header parsing.

38. The system of claim 29 wherein said first parsing comprises PTS/DTS (Presentation/Decode Time Stamp) extraction.

39. The system of claim 29 wherein said first processing comprises locating ES bytes in said data packets.

40. The system of claim 29 wherein said first processing comprises comparing data stream patterns.

41. A method of processing data efficiently comprising:

receiving data packets in one or more formats;

first parsing said data packets to generate a first parsed data packets;

first processing said first parsed data packets to yield transcoded data packets having a common format;

storing said transcoded data packets into a memory;

reading said transcoded data packets from said memory; and

executing a set of instructions that is common to said one or more formats, said executing to perform;

second parsing of said received data packets if said first parsing was bypassed; and

second processing of said transcoded data packets, wherein said set of instructions is independent of said one or more formats.

42. The method of claim 41 wherein said data packets comprises MPEG data packets.

43. The method of claim 41 wherein said data packets comprises DirecTV data packets.

44. The method of claim 41 wherein said data packets comprises DVD/program stream data packets.

45. The method of claim 41 wherein said data packets comprises video data formatted using MPEG, VC1, or AVC.

46. The method of claim 41 wherein said data packets comprises audio data formatted using AC3 and AAC.

47. The method of claim 41 wherein said first parsing comprises error parsing.

48. The method of claim 41 wherein said first parsing comprises adaptation field parsing.

49. The method of claim 41 wherein said first parsing comprises PES header parsing.

50. The method of claim 41 wherein said first parsing comprises PTS/DTS (Presentation/Decode Time Stamp) extraction.

51. The method of claim 41 wherein said first processing comprises locating ES bytes in said data packets.

52. The method of claim 41 wherein said first processing comprises comparing data stream patterns.