Method and Apparatus for Signal Processing and Encoding and Decoding Method, and Apparatus Therefor

• US 20080270147A1
• Filed: 10/04/2006
• Published: 10/30/2008
• Est. Priority Date: 01/13/2006
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Pang, Hee Suk, Lim, Jae Hyun, Jung, Yang Won, Kim, Dong Soo, Kim, Hyo Jin, Oh, Hyeon-O
• Granted Patent: US 7,752,053 B2
• Time in Patent Office: Days
• US Class Current: 704/500
• CPC Class Codes: G10L 19/0017 Lossless audio signal coding; Perfect reconstruction of coded audio signal by transmission of coding error G10L19/24 takes precedence
• CPC Class Codes: G10L 19/008 Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
• CPC Class Codes: G10L 19/04 using predictive techniques
• CPC Class Codes: G10L 19/167 Audio streaming, i.e. formatting and decoding of an encoded audio signal representation into a data stream for transmission or storage purposes
• CPC Class Codes: G10L 19/20 using sound class specific coding, hybrid encoders or object based coding
• CPC Class Codes: G10L 19/22 Mode decision, i.e. based on audio signal content versus external parameters
• CPC Class Codes: H03M 7/30 Compression speech analysis-synthesis for redundancy reduction G10L19/00; for image communication H04N; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
• CPC Class Codes: H03M 7/40 Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
• CPC Class Codes: H03M 7/42 using table look-up for the coding or decoding process, e.g. using read-only memory H03M7/4006 takes precedence
• CPC Class Codes: H04L 27/2602 Signal structure
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• CPC Class Codes: H04S 1/007 in which the audio signals are in digital form data reduction aspects thereof based on psychoacoustics G10L19/02

Abstract

An apparatus for processing a signal and method thereof are disclosed. Data coding and entropy coding are performed with interconnection, and grouping is used to enhance coding efficiency. The present invention includes the steps of obtaining a group reference value corresponding to a plurality of data included in one group through data grouping and internal grouping for the data grouping and a difference value corresponding to the group reference value and obtaining the data using the group reference value and the difference value.

Claims

1. A method of processing a signal, comprising the steps of:

obtaining from the signal a group reference value corresponding to data included in a group through data grouping and internal grouping for the data grouping and a difference value corresponding to the group reference value; and

obtaining the data using the group reference value and the difference value.

2. The method of claim 1, wherein a number of the data included in the internal grouping is smaller than a number of the data included in the data grouping.

3. The method of claim 1, wherein the data are parameters.

4. The method of claim 3, further comprising the step of reconstructing an audio signal using the parameters.

5. The method of claim 3, wherein the internal grouping is performed on the data-grouped data entirely.

6. The method of claim 5, wherein the internal grouping can be performed per a parameter band.

7. The method of claim 3, wherein the internal grouping is performed on a plurality of the data-grouped data partially.

8. The method of claim 3, wherein the internal grouping is performed per a channel of each of a plurality of the data-grouped data.

9. The method of claim 1, wherein the group reference value comprises a pilot reference value.

10. The method of claim 1, wherein the group reference value comprises a difference reference value.

11. The method of claim 1, further comprising the step of decoding at least one of the group reference value and the difference value.

12. The method of claim 9, wherein the pilot reference value is decided per the group.

13. The method of claim 1, wherein the data grouping and the internal grouping are performed on the data on a frequency domain.

14. The method of claim 13, wherein the frequency domain comprises one selected from the group consisting of a sample domain, a sub-band domain, a hybrid domain, a parameter band domain, a data band domain and a channel domain.

15. The method of claim 1, wherein in obtaining the data, grouping information for at least one of the data grouping and the internal grouping is used.

16. The method of claim 15, wherein the grouping information includes at least one selected from the group consisting of a position of each group, a number of each group, a presence or non-presence of applying the group reference value per a group, a number of the group reference values, a codec scheme of the group reference value and a presence or non-presence of obtaining the group reference value.

17. An apparatus for processing a signal, comprising:

a value obtaining part configurable for obtaining from the signal a group reference value corresponding to data included in a group through data grouping and internal grouping for the data grouping and a difference value corresponding to the group reference value; and

a data obtaining part configurable for obtaining the data using the group reference value and the difference value.

18. A method of processing a signal, comprising the steps of:

generating a difference value using a group reference value corresponding to data included in a group through data grouping and internal grouping for the data grouping and the data; and

transferring the generated difference value.

19. An apparatus for processing a signal, comprising:

a value generating part configurable generating a difference value using a group reference value corresponding to data included in a group through data grouping and internal grouping for the data grouping and the data, wherein the group reference value is obtained from the signal; and

an outputting part configurable for transferring the generated difference value.

20. The apparatus of claim 19, wherein the outputting part transfers the group reference value and the difference value.