Signaling coding and display options in entry point headers

• US 20050123274A1
• Filed: 11/15/2004
• Published: 06/09/2005
• Est. Priority Date: 09/07/2003
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Crinon, Regis J., Lin, Chih-Lung, Wu, Shuo-Jen, Regunathan, Shankar, Liang, Jie, Holcomb, Thomas W., Onders, Timothy E.
• Granted Patent: US 7,924,921 B2
• Time in Patent Office: Days
• US Class Current: 386/241
• CPC Class Codes: H04N 19/44 Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
• CPC Class Codes: H04N 19/70 characterised by syntax aspects related to video coding, e.g. related to compression standards
• CPC Class Codes: H04N 21/23424 involving splicing one content stream with another content stream, e.g. for inserting or substituting an advertisement
• CPC Class Codes: H04N 21/44016 involving splicing one content stream with another content stream, e.g. for substituting a video clip
• CPC Class Codes: H04N 21/8455 involving pointers to the content, e.g. pointers to the I-frames of the video stream

Abstract

A decoder receives an entry point header comprising plural control parameters for an entry point segment corresponding to the entry point header. The entry point header is in an entry point layer of a bitstream comprising plural layers. The decoder decodes the entry point header. The plural control parameters can include various combinations of control parameters such as a pan scan on/off parameter, a reference frame distance on/off parameter, a loop filtering on/off parameter, a fast chroma motion compensation on/off parameter, an extended range motion vector on/off parameter, a variable sized transform on/off parameter, an overlapped transform on/off parameter, a quantization decision parameter, and an extended differential motion vector coding on/off parameter, a broken link parameter, a closed entry parameter, one or more coded picture size parameters, one or more range mapping parameters, a hypothetical reference decoder buffer parameter, and/or other parameter(s).

Claims

1. A method comprising:

in a bitstream comprising plural layers, inserting plural different entry point segment control parameters in an entry point header, each of the plural different entry point segment control parameters affecting decoding or display of one or more pictures in an entry point segment of the bitstream;

wherein each of the plural different entry point segment control parameters is selected from the group consisting of;

a pan scan on/off parameter, a reference frame distance on/off parameter, a loop filtering on/off parameter, a fast chroma motion compensation on/off parameter, an extended range motion vector on/off parameter, a variable sized transform on/off parameter, an overlapped transform on/off parameter, a quantization decision parameter, and an extended differential motion vector coding on/off parameter.

2. The method of claim 1 wherein the plural layers comprise an entry point layer, and wherein the entry point header is in the entry point layer.

3. The method of claim 1 wherein the entry point segment comprises an entry point key frame, and wherein the entry point key frame is a P/I-frame.

4. One or more computer-readable media having stored thereon computer-executable instructions for performing the method of claim 1.

5. A method comprising:

receiving an entry point header comprising plural control parameters for an entry point segment corresponding to the entry point header, wherein the entry point header is in an entry point layer of a bitstream comprising plural layers; and

decoding the entry point header;

wherein the plural control parameters include two or more of;

a pan scan on/off parameter, a reference frame distance on/off parameter, a loop filtering on/off parameter, a fast chroma motion compensation on/off parameter, an extended range motion vector on/off parameter, a variable sized transform on/off parameter, an overlapped transform on/off parameter, a quantization decision parameter, a quantizer type parameter, and an extended differential motion vector coding on/off parameter.

6. The method of claim 5 wherein the plural control parameters further comprise a broken link parameter.

7. The method of claim 5 wherein the plural control parameters further comprise a closed entry parameter.

8. The method of claim 5 wherein the fast chroma motion compensation on/off parameter indicates mechanisms for sub-pixel interpolation for chroma samples and rounding of chroma motion vectors.

9. The method of claim 5 wherein the quantization decision parameter indicates one or more layers of signaling for quantization step sizes.

10. The method of claim 5 wherein the quantization type parameter indicates a quantizer type for frames in the entry point segment.

11. The method of claim 5 wherein the plural control parameters further comprise one or more coded picture size parameters.

12. The method of claim 5 wherein the plural control parameters further comprise one or more range mapping parameters.

13. The method of claim 12 wherein the one or more range mapping parameters comprise a luma range mapping parameter.

14. The method of claim 12 wherein the one or more range mapping parameters comprise a chroma range mapping parameter.

15. The method of claim 5 wherein the plural control parameters further comprise a hypothetical reference decoder buffer parameter.

16. One or more computer-readable media having stored thereon computer-executable instructions for performing the method of claim 5.

17. A method comprising:

receiving an entry point header comprising plural control parameters for an entry point segment corresponding to the entry point header, the entry point segment comprising plural frames; and

decoding the entry point header;

wherein the plural control parameters comprise at least;

a reference frame distance on/off parameter;

a loop filtering on/off parameter;

a fast chroma motion compensation on/off parameter;

an extended range motion vector on/off parameter;

a variable sized transform on/off parameter;

an overlapped transform on/off parameter; and

a quantization decision parameter.

18. The method of claim 17 wherein the plural control parameters further comprise an extended differential motion vector coding on/off parameter.

19. The method of claim 17 wherein the plural control parameters further comprise a pan scan on/off parameter.

20. One or more computer-readable media having stored thereon computer-executable instructions for performing the method of claim 17.