System, method, and apparatus for embedding personal video recording functions at picture level

Patent metadata

Field	Value
Publication number	US-9236092-B2
Application number	US-8845605-A
Country	US
Kind code	B2
Filing date	Mar 24, 2005
Priority date	Mar 24, 2005
Publication date	Jan 12, 2016
Grant date	Jan 12, 2016

Abstract

Described herein are system(s), method(s), and apparatus for embedding personal video recorder functions at the picture level. In one embodiment, there is presented a computer readable medium for storing a data structure. The data structure comprises a picture header and at least one command following the picture header.

First claim

The invention claimed is:

1. An apparatus for processing video data, said apparatus comprising:
a decoder system operable to decode the video data, said decoder system comprising:
a controller operable to write at least one command into a group of pictures data structure, the at least one command affecting at least one of a playback speed of the video data, a playback direction of the video data, or both the playback speed of the video data and the playback direction of the video data; and
a video decoder operably connected to the controller to execute the at least one command.

2. The apparatus of claim 1 , wherein the group of pictures data structure comprises a picture header, and wherein the controller writes the at least one command after the picture header.

3. The apparatus of claim 2 , wherein the group of pictures data structure comprises user data, said user data comprising a start code, a signature, and the at least one command.

4. The apparatus of claim 1 , wherein execution of the at least one command by the video decoder causes a rewind operation.

5. The apparatus of claim 1 , wherein execution of the at least one command by the video decoder causes a fast forward operation.

6. The apparatus of claim 1 , wherein the video decoder decompresses the video data, said decoder system further comprising:
a display engine operable connected to the video decoder to provide the decompressed video data for display.

7. The apparatus of claim 1 , wherein the decoder system further comprises:
a computer readable medium connected to the video decoder and storing a picture data structure corresponding to the group of pictures data structure, wherein said picture data structure comprises:
a picture header; and
at least one command following the picture header.

8. The apparatus of claim 7 , wherein the picture data structure comprises user data, and wherein the user data comprises the at least one command.

9. The apparatus of claim 7 , wherein the user data immediately follows the picture header.

10. The apparatus of claim 9 , wherein the user data comprises a user data start code and a signature.

11. The apparatus of claim 7 , wherein the picture data structure comprises a picture payload, said picture payload following the at least one command.

12. The apparatus of claim 7 , wherein the at least one command is for a rewind function.

13. The apparatus of claim 7 , wherein the at least one command is for a fast forward function.

14. The apparatus of claim 7 , wherein the data structure further comprises:
a picture payload following the user data.

15. A method for processing video data in a decoder system, comprising the steps of:
writing via a video controller at least one command into a group of pictures data structure, the at least one command affecting at least one of a playback speed of the video data, a playback direction of the video data, or both the playback speed of the video data and the playback direction of the video data; and
executing, in a video decoder, the at least one command.

16. The method of claim 15 , wherein the group of pictures data structure comprises a picture header, and the method further comprises the step of writing, via the video controller, the at least one command following the picture header.

17. The method of claim 15 , wherein execution of the at least one command by the video decoder causes a rewind operation.

18. The method of claim 15 , wherein execution of the at least one command by the video decoder causes a fast forward operation.

19. The method of claim 15 , wherein the group of pictures data structure further comprises at least one picture data structure, wherein the picture data structure comprises:
at least one picture header; and
at least one command following the picture header.

20. A system for processing video data, comprising:
means for writing at least one command into a group of pictures data structure, the at least one command affecting at least one of a playback speed of the video data, a playback direction of the video data, or both the playback speed of the video data and the playback direction of the video data; and
means for executing the at least one command.

Assignees

• Aralaguppe Vijayanand
• Aggarwal Gaurav
• Ananthan Vijayaraghavan
• Broadcom Corp

Inventors

• Aralaguppe Vijayanand
• Aggarwal Gaurav
• Ananthan Vijayaraghavan

Classifications

• G11B20/0021

  involving encryption or decryption of contents recorded on or reproduced from a record carrier · CPC title

• G11B20/00492

  wherein content or user data is encrypted · CPC title

• G11B20/00086

  Circuits for prevention of unauthorised reproduction or copying, e.g. piracy (indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00) · CPC title

• G11B27/3027 Primary

  used signal is digitally coded · CPC title

• G11B27/005

  Reproducing at a different information rate from the information rate of recording (for television signals H04N5/783) · CPC title