Method and apparatus for video encoding and/or decoding to prevent start code confusion

Patent metadata

Field	Value
Publication number	US-10230989-B2
Application number	US-201213529446-A
Country	US
Kind code	B2
Filing date	Jun 21, 2012
Priority date	Jun 21, 2011
Publication date	Mar 12, 2019
Grant date	Mar 12, 2019

Abstract

A method and a video processor for preventing start code confusion. The method includes aligning bytes of a slice header relating to slice data when the slice header is not byte aligned or inserting differential data at the end of the slice header before the slice data when the slice header is byte aligned, performing emulation prevention byte insertion on the slice header, and combine the slice header and the slice data after performing emulation prevention byte insertion.

First claim

What is claimed is:

1. A non-transitory computer readable medium comprising instructions that, when executed, cause a video processor to:
perform emulation prevention byte insertion on slice data associated with a slice header;
perform emulation prevention byte insertion on the slice header after performance of the emulation prevention byte insertion on the slice data; and
combine the slice header and the slice data after performing the emulation prevention byte insertion on the slice header.

2. The non-transitory computer readable medium of claim 1 , wherein the instructions that cause the video processor to perform emulation prevention byte insertion on the slice data include instructions that cause the video processor to perform emulation prevention byte insertion on the slice data independently from performing emulation prevention byte insertion on the slice header.

3. The non-transitory computer readable medium of claim 1 , wherein the instructions that cause the video processor to perform emulation prevention byte insertion on the slice data include instructions that cause the video processor to perform emulation prevention byte insertion on the slice data without using the slice header.

4. The non-transitory computer readable medium of claim 1 , wherein the instructions further cause the video processor to perform emulation prevention byte insertion on the slice data while at least one of Sample Adaptive Offset (SAO) and Adaptive Loop Filter (ALF) processes are taking place to generate at least one of SAO and ALF parameters for the slice header associated with the slice data.

5. The non-transitory computer readable medium of claim 1 , wherein the instructions further cause the video processor to insert data at the end of the slice header before the slice data only when the slice header ends with zeros.

6. The non-transitory computer readable medium of claim 5 , wherein the inserted data is ‘FF’.

7. A method comprising:
performing, with one or more processors, emulation prevention byte insertion on slice data associated with a slice header;
performing, with the one or more processors, emulation prevention byte insertion on the slice header after performance of the emulation prevention byte insertion on the slice data; and
combining, with the one or more processors, the slice header and the slice data after performing the emulation prevention byte insertion on the slice header.

8. The method of claim 7 , wherein performing the emulation prevention byte insertion on the slice data includes performing emulation prevention byte insertion on the slice data independently from performing emulation prevention byte insertion on the slice header.

9. The method of claim 7 , wherein performing the emulation prevention byte insertion on the slice data includes performing emulation prevention byte insertion on the slice data without using the slice header.

10. The method of claim 7 , wherein performing the emulation prevention byte insertion on the slice data includes performing emulation prevention byte insertion on the slice data while at least one of Sample Adaptive Offset (SAO) and Adaptive Loop Filter (ALF) processes are taking place to generate at least one of SAO and ALF parameters for the slice header associated with the slice data.

11. The method of claim 7 , wherein the instructions further cause the video processor to insert data at the end of the slice header before the slice data only when the slice header ends with zeros.

12. The method of claim 11 , wherein the inserted data is ‘FF’.

13. A device comprising one or more processors configured to:
perform emulation prevention byte insertion on slice data associated with a slice header;
perform emulation prevention byte insertion on the slice header after performance of the emulation prevention byte insertion on the slice data; and
combine the slice header and the slice data after performing the emulation prevention byte insertion on the slice header.

14. The device of claim 13 , wherein performing the emulation prevention byte insertion on the slice data includes performing emulation prevention byte insertion on the slice data without using the slice header.

15. The device of claim 13 , wherein performing the emulation prevention byte insertion on the slice data includes performing emulation prevention byte insertion on the slice data while at least one of Sample Adaptive Offset (SAO) and Adaptive Loop Filter (ALF) processes are taking place to generate at least one of SAO and ALF parameters for the slice header associated with the slice data.

16. A non-transitory computer readable medium comprising instructions that, when executed, cause a video processor to:
perform emulation prevention byte insertion on the slice data while at least one of Sample Adaptive Offset (SAO) and Adaptive Loop Filter (ALF) processes are taking place to generate at least one of SAO and ALF parameters for the slice header associated with the slice data,
perform emulation prevention byte insertion on the slice header in parallel with or after performance of the emulation prevention byte insertion on the slice data; and
combine the slice header and the slice data after performing the emulation prevention byte insertion on the slice header.

17. The non-transitory computer readable medium of claim 16 , wherein the instructions that cause the video processor to perform emulation prevention byte insertion on the slice header in parallel with or after performance of the emulation prevention byte insertion on the slice data include instructions that cause the video processor to perform emulation prevention byte insertion on the slice header in parallel with performance of the emulation prevention byte insertion on the slice data.

18. A method comprising:
performing, with one or more processors, emulation prevention byte insertion on the slice data while at least one of Sample Adaptive Offset (SAO) and Adaptive Loop Filter (ALF) processes are taking place to generate at least one of SAO and ALF parameters for the slice header associated with the slice data;
performing, with the one or more processors, emulation prevention byte insertion on the slice header in parallel with or after performance of the emulation prevention byte insertion on the slice data; and
combining, with the one or more processors, the slice header and the slice data after performing the emulation prevention byte insertion on the slice header.

19. The method of claim 18 , wherein performing the emulation prevention byte insertion on the slice header in parallel with or after performance of the emulation prevention byte insertion on the slice data includes performing emulation prevention byte insertion on the slice header in parallel with performance of the emulation prevention byte insertion on the slice data.

20. A device comprising one or more processors configured to:
perform emulation prevention byte insertion on the slice data while at least one of Sample Adaptive Offset (SAO) and Adaptive Loop Filter (ALF) processes are taking place to generate at least one of SAO and ALF parameters for the slice header associated with the slice data;
perform emulation prevention byte insertion on the slice header in parallel with or after performance of the emulation prevention byte insertion on the slice data; and
combine the slice header and the slice data after performing the emulation prevention byte insertion on the slice header.

21. The device of claim 20 , wherein performing the emulation preventio

Assignees

• Sze Vivienne
• Budagavi Madhukar
• Osamoto Akira
• Matsuba Yasutomo
• Texas Instruments Inc

Inventors

• Sze Vivienne
• Budagavi Madhukar
• Osamoto Akira
• Matsuba Yasutomo

Classifications

• H04N19/70 Primary

  characterised by syntax aspects related to video coding, e.g. related to compression standards · CPC title