Method and apparatus for transmitting/receiving uncompressed AV data

• US 20070268972A1
• Filed: 03/23/2007
• Published: 11/22/2007
• Est. Priority Date: 05/16/2006
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Ki-bo
• Application Number:
  US11/727,066
• Publication Number:
  US 20070268972A1
• Time in Patent Office: Days
• US Class Current: 375/240.270
• CPC Class Codes: H03M 13/23 using convolutional codes, e.g. unit memory codes
• CPC Class Codes: H03M 13/356 Unequal error protection [UEP]
• CPC Class Codes: H03M 13/6362 by puncturing
• CPC Class Codes: H03M 13/6527 IEEE 802.11 [WLAN]

Abstract

Provided is a method of differentially coding uncompressed AV data. A method for transmitting uncompressed AV data according to an embodiment of the invention includes grouping bits of the uncompressed AV data into a plurality of groups according to significance of the bits; determining a code rate for every group; applying error correction coding to each group at the determined code rate; and transmitting the groups to which the error correction coding has been applied.

Claims

1. A method of transmitting uncompressed audio and/or video (AV) data, the method comprising:

grouping bits of the uncompressed AV data into a plurality of groups according to significance of the bits;

determining code rates for the plurality of groups;

applying error correction coding to the plurality of groups at the determined code rates; and

transmitting the plurality of groups to which the error correction coding has been applied.

2. The method of claim 1, wherein the significance is based on bit levels where the bits are positioned.

3. The method of claim 1, wherein the error correction coding is convolution coding.

4. The method of claim 3, further comprising adjusting the code rates by removing bits of each of the plurality of groups to which the error correction coding has been applied.

5. The method of claim 1, wherein the code rates comprises a first code rate and a second code rate and:

the number of the plurality of groups is two;

the first code rate for a first group of the plurality of groups having higher significance is determined to 4/7; and

the second code rate for a second group of the plurality of groups having lower significance is determined to 4/5.

6. The method of claim 1, further comprising transmitting information representing the determined code rates.

7. A method of receiving uncompressed audio and/or video (AV) data, the method comprising:

receiving uncompressed AV data to which error correction coding has been applied to each one of groups at one of different coding rates;

determining the one of different code rates corresponding to each one of the groups;

applying error correction decoding to each one of the groups at the determined one of different code rates; and

restoring the uncompressed AV data by assembling the groups to which the error correction decoding has been applied.

8. The method of claim 7, wherein the error correction decoding is applied to one of the groups having relatively high significance, at a lower code rate.

9. The method of claim 8, wherein the relatively high significance is based on bit levels where the bits included in the groups are positioned.

10. The method of claim 7, further comprising receiving information representing the different code rates, wherein the determining of the different code rates is performed on the basis of the information.

11. The method of claim 10, wherein the information is included in a physical (PHY) header of the uncompressed AV data to which the error correction coding has been applied.

12. The method of claim 7, wherein the error correction decoding is convolution decoding.

13. The method of claim 7, wherein the restoring of the uncompressed AV data comprises assembling the bits included in the groups to which the error correction decoding has been applied, in the order of bit levels.

14. The method of claim 13, wherein the assembled bits are one of a plurality of sub-pixel values constituting a pixel.

15. An apparatus for transmitting uncompressed audio and/or video (AV) data, the apparatus comprising:

a unit which groups bits of the uncompressed AV data into a plurality of groups according to significance of the bits;

a unit which determines code rates for the groups;

a unit which applies error correction coding to the groups at the determined code rates; and

a unit which transmits the groups to which the error correction coding has been applied.

16. The apparatus of claim 15, wherein the significance is based on bit levels where the bits are positioned.

17. The apparatus of claim 15, wherein the error correction coding is convolution coding.

18. The apparatus of claim 17, further comprising a unit which adjusts the code rates by removing a number of bits of each of the groups to which the error correction coding has been applied.

19. The apparatus of claim 15, wherein the code rates comprises a first code rate and a second code rate and:

the number of groups is two;

the first code rate for a first group of the groups having higher significance is determined to 4/7; and

the second code rate for a second group of the groups having lower significance is determined to 4/5.

20. The apparatus of claim 15, wherein the transmitting unit further transmits information representing the determined code rate.

21. An apparatus for receiving uncompressed audio and/or video (AV) data, the apparatus comprising:

a unit which receives the uncompressed AV data to which error correction coding has been applied to each one of groups at one of different coding rates;

a unit which determines the one of different coding rates corresponding to each one of the groups;

a unit which applies error correction decoding to each one of the groups at the one of the determined code rates; and

a unit which restores the uncompressed AV data by assembling the groups to which the error correction decoding has been applied.

22. The apparatus of claim 21, wherein, the error correction decoding is applied to one of the groups having relatively high significance, at a lower code rate.

23. The apparatus of claim 22, wherein the relatively high significance is based on bit levels where bits included in the one of the groups, are positioned.

24. The apparatus of claim 21, wherein:

the receiving unit further receives information representing the different code rates; and

the determining unit determines the different code rates on the basis of the information.

25. The apparatus of claim 24, wherein the information is included in a physical (PHY) header of the uncompressed AV data to which the error correction coding has been applied.

26. The apparatus of claim 21, wherein the error correction decoding is convolution decoding.

27. The apparatus of claim 21, the restoring unit assembles the bits included in the groups to which the error correction decoding has been applied, in the order of bit levels.

28. The apparatus of claim 27, wherein the assembled bits are one of a plurality of sub-pixel values constituting a pixel.