PICTURE INTERDEPENDENCIES SIGNALS IN CONTEXT OF MMCO TO ASSIST STREAM MANIPULATION

• US 20090310934A1
• Filed: 06/12/2009
• Published: 12/17/2009
• Est. Priority Date: 06/12/2008
• Status: Active Grant

• Current Assignee: Triton US VP Acquisition, Co.
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Rodriguez, Arturo A., Cook, Benjamin M.
• Granted Patent: US 8,886,022 B2
• Time in Patent Office: Days
• US Class Current: 386/343
• CPC Class Codes: H04N 21/23418 involving operations for analysing video streams, e.g. detecting features or characteristics television picture signal circuitry for scene change detection H04N5/147; filtering for image enhancement G06T5/00; methods or arrangements for recognising scenes G06V20/00; arrangements characterised by components specially adapted for monitoring, identification or recognition of video in broadcast systems H04H60/59
• CPC Class Codes: H04N 21/4325 by playing back content from the storage medium reproduction of recorded television signals H04N5/76; reproduction of recorded television signals H04N9/79
• CPC Class Codes: H04N 21/44008 involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream arrangements characterised by components specially adapted for monitoring, identification or recognition of video in broadcast systems H04H60/59
• CPC Class Codes: H04N 21/8451 using Advanced Video Coding [AVC]
• CPC Class Codes: H04N 21/8455 involving pointers to the content, e.g. pointers to the I-frames of the video stream
• CPC Class Codes: H04N 5/76 Television signal recording
• CPC Class Codes: H04N 5/765 Interface circuits between an apparatus for recording and another apparatus
• CPC Class Codes: H04N 5/781 on disks or drums
• CPC Class Codes: H04N 5/783 Adaptations for reproducing at a rate different from the recording rate
• CPC Class Codes: H04N 5/91 Television signal processing therefor
• CPC Class Codes: H04N 9/7921 for more than one processing mode
• CPC Class Codes: H04N 9/8205 involving the multiplexing of an additional signal and the colour video signal

Abstract

In one embodiment, a method that provides tier information corresponding to a picture, the tier information provided in an adaptation field of a transport packet, the transport packet comprising a first byte of a header of a packetized elementary stream (PES) containing the picture; and provides the first transport packet.

Claims

1. A method, comprising:

receiving an encoded video stream with a first picture, a second picture, and a third picture, wherein the encoded first picture includes a memory management control operation (MMCO), wherein decoding of the third picture depends on processing the MMCO;

effecting the issuance by the first picture the MMCO during a first playback mode, the first picture processed but not decoded; and

processing and decoding the first picture during a second playback mode, wherein the MMCO issued by the first picture affects referencing of the second picture by the third picture, the first picture different than the second picture and the third picture, the second picture different than the first third picture.

2. The method of claim 1, wherein the second picture comprises a reference picture to the third picture.

3. The method of claim 1, wherein the first playback mode comprises a trick mode.

4. The method of claim 1, wherein the second playback mode comprises a normal playback mode.

5. The method of claim 1, wherein the third picture comprises a lower numbered tier than the second picture.

6. The method of claim 1, further comprising referencing by the third picture the first picture, the third picture comprising a tier number no lower than the tier number of the first picture.

7. A method, comprising:

providing tier information corresponding to a picture, the tier information provided in an adaptation field of a transport packet, the transport packet comprising a first byte of a header of a packetized elementary stream (PES) containing the picture; and

providing the first transport packet.

8. The method of claim 7, wherein a first byte of a payload of the transport packet corresponds to the first byte of the header of the PES packet.

9. The method of claim 7, wherein a first byte of a payload of the transport packet corresponds to a first byte corresponding to the picture.

10. The method of claim 7, further comprising providing a pointer to a next picture in a compressed video stream, the next picture and the picture comprising a same tier number.

11. A system, comprising:

a processor configured to provide a data field in an adaptation field of a transport packet, the data field further comprising;

a first information configured to signal a tier number corresponding to a picture; and

a second information configured to signal whether the first picture issues a memory management control operation (MMCO) command.

12. The system of claim 11, wherein the first information is ordered based on increasing or decreasing tier number.

13. The system of claim 11, wherein the data field further comprises a third information configured to signal whether the first information is ordered according to an increasing or decreasing order.

14. The system of claim 11, wherein the data field further comprises a fourth information configured to signal an identification of a subsequent picture corresponding to a same tier number as the tier number of the picture.

15. The system of claim 14, wherein the identification comprises a location relative to the picture.

16. The system of claim 14, wherein the fourth information is further configured to signal an absence of an identification of the subsequent picture.

17. The system of claim 11, wherein the data field further comprises a fifth information configured to signal an identification of a forward predicted picture.

18. The system of claim 11, wherein the processor is further configured to:

signal a non-reference picture as a reference picture; and

effect issuance of an MMCO command with the non-reference picture marked as a reference picture.

19. The system of claim 11, wherein the data field further comprises a sixth information configured to signal a number of independently decodable pictures per second for a defined trick mode speed.

20. The system of claim 19, wherein the data field further comprises a parameter corresponding to at least one trick mode speed.