Granted Patent B2

US 8,068,721 · App. 11/412,844 · Granted Nov 29, 2011

Abstract

Claims (58)

1. A method of transmitting video data from a first entity to a second entity, whereby the video data comprise information bits, wherein the method comprises the steps of:

applying a systematic channel encoding on information bits of video data and obtaining a sequence comprising encoded information bits and error correction bits of the information bits;

generating a primary coded picture network abstraction layer comprising the encoded information bits of the video data;

inserting the error correction bits into a redundant coded picture network abstraction layer by including error correction data with higher error correction power and with smaller size in the redundant coded picture network abstraction layer, rather than inserting a copy of select encoded information bits from the primary coded picture network abstraction layer;

transferring the primary coded picture network abstraction layer and the redundant coded picture network abstraction layer from the first entity to the second entity;

receiving the primary coded picture network abstraction layer and the redundant coded picture network abstraction layer at the second entity;

using the error correction bits in the redundant coded picture network abstraction layer for detecting and correcting errors in the received primary coded picture network abstraction layer to form a corrected primary coded picture network abstraction layer; and

performing video decoding of the corrected primary coded picture network abstraction layer to form corrected information bits corresponding to the information bits of the video data.

2. The method of claim 1 , comprises the steps of:

generating a primary coded picture network abstraction layer comprising the encoded information bits of the video data, whereby the primary coded picture network abstraction layer conforms with MPEG4-AVC and/or H.264 standards;

inserting the error correction bits into a redundant coded picture network abstraction layer, whereby the redundant coded picture network abstraction layer conforms with the MPEG4-AVC and/or the H.264 standards.

3. The method of claim 1 , comprises the steps of:

applying a systematic channel encoding based on a Hamming code.

4. The method of claim 1 , comprises the steps of:

applying a systematic channel encoding based on a LDPC code.

5. The method of claim 1 , comprises the steps of:

applying a systematic channel encoding based on a convolutional code.

6. The method of claim 1 , comprises the steps of:

transferring the primary coded picture network abstraction layer and the redundant coded picture network abstraction layer from the first entity to the second entity over an IP network, in particular the Internet.

7. A video processing device with

a control unit, wherein the control unit is adapted for

applying a systematic channel encoding on information bits of video data and obtaining a sequence comprising encoded information bits and error correction bits of the information bits;

generating a primary coded picture network abstraction layer comprising the encoded information bits of the video data;

inserting the error correction bits into a redundant coded picture network abstraction layer by including error correction data with higher error correction power and with smaller size in the redundant coded picture network abstraction layer, rather than inserting a copy of select encoded information bits from the primary coded picture network abstraction layer;

transferring the primary coded picture network abstraction layer and the redundant coded picture network abstraction layer to another entity for using the error correction bits in the redundant coded picture network abstraction layer for detecting and correcting errors in the received primary coded picture network abstraction layer to form a corrected primary coded picture network abstraction layer, and for performing video decoding of the corrected primary coded picture network abstraction layer to form corrected information bits corresponding to the information bits of video data.

8. A video processing device with

a control unit, wherein the control unit is adapted for

receiving a primary coded picture network abstraction layer comprising encoded information bits of video data and a redundant coded picture network abstraction layer comprising error correction bits of the information bits from another entity, the error correction bits inserted in the redundant coded picture network abstraction layer by including error correction data with higher error correction power and with smaller size in the redundant coded picture network abstraction layer, rather than inserting a copy of select encoded information bits from the primary coded picture network abstraction layer, the encoded information bits and error correction bits obtained by applying a systematic channel encoding on information bits of the video data;

using the error correction bits in the redundant coded picture network abstraction layer for detecting and correcting errors in the received primary coded picture network abstraction layer to form a corrected primary coded picture network abstraction layer; and

performing video decoding of the corrected primary coded picture network abstraction layer to form corrected information bits corresponding to the information bits of video data.

9. A video processing device with a control unit according to claim 7 , wherein the video processing device is a terminal, a video proxy, or a video gateway.

10. A computer program product for transmission of video data, whereby the video data comprise information bits, wherein the computer program product is recorded on a computer-readable medium and, when executed by a sending video processing unit, performs the steps of:

applying a systematic channel encoding on information bits of video data and obtaining a sequence comprising encoded information bits and error correction bits of the information bits;

generating a primary coded picture network abstraction layer comprising the encoded information bits of the video data;

inserting the error correction bits into a redundant coded picture network abstraction layer by including error correction data with higher error correction power and with smaller size in the redundant coded picture network abstraction layer, rather than inserting a copy of select encoded information bits from the primary coded picture network abstraction layer; and

transferring the primary coded picture network abstraction layer and the redundant coded picture network abstraction layer to a receiving video processing unit.

11. The method set forth in claim 1 , further comprising:

transferring the primary coded picture network abstraction layer and the redundant coded picture network abstraction layer from the first entity to the second entity over a wireless network, in particular a mobile telecommunication network.

12. The video processing device set forth in claim 7 wherein the control unit is also adapted for:

generating a primary coded picture network abstraction layer comprising the encoded information bits of the video data, whereby the primary coded picture network abstraction layer conforms with MPEG4-AVC and/or H.264 standards;

inserting the error correction bits into a redundant coded picture network abstraction layer, whereby the redundant coded picture network abstraction layer conforms with the MPEG4-AVC and/or the H.264 standards.

13. The video processing device set forth in claim 7 wherein the control unit is also adapted for:

applying a systematic channel encoding based on a Hamming code.

14. The video processing device set forth in claim 7 wherein the control unit is also adapted for:

applying a systematic channel encoding based on a LDPC code.

15. The video processing device set forth in claim 7 wherein the control unit is also adapted for:

applying a systematic channel encoding based on a convolutional code.

16. The video processing device set forth in claim 7 wherein the control unit is also adapted for:

transferring the primary coded picture network abstraction layer and the redundant coded picture network abstraction layer to the other entity over an IP network, in particular the Internet.

17. The video processing device set forth in claim 7 wherein the control unit is also adapted for:

transferring the primary coded picture network abstraction layer and the redundant coded picture network abstraction layer to the other entity over a wireless network, in particular a mobile telecommunication network.

18. The video processing device set forth in claim 8 wherein the primary coded picture network abstraction layer and the redundant coded picture network abstraction layer conform with MPEG4-AVC and/or H.264 standards.

19. The video processing device set forth in claim 8 wherein the control unit is also adapted for:

receiving the primary coded picture network abstraction layer and the redundant coded picture network abstraction layer over an IP network, in particular the Internet.

20. The computer program product set forth in claim 10 wherein the computer program product, when executed by the receiving video processing unit, performs the steps of:

receiving the primary coded picture network abstraction layer and the redundant coded picture network abstraction layer from the sending video processing unit;

using the error correction bits in the redundant coded picture network abstraction layer for detecting and correcting errors in the received primary coded picture network abstraction layer to form a corrected primary coded picture network abstraction layer; and

performing video decoding of the corrected primary coded picture network abstraction layer to form corrected information bits corresponding to the information bits of the video data.

Assignments (8)