Method of Processing a Signal and Apparatus for Processing a Signal

• US 20090225782A1
• Filed: 10/04/2006
• Published: 09/10/2009
• Est. Priority Date: 10/05/2005
• 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, Oh, Hyen O
• Granted Patent: US 7,813,380 B2
• Time in Patent Office: Days
• US Class Current: 370/474
• 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 19/18 Vocoders using multiple modes
• 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

A method and apparatus for signal processing which enable data compression and recovery with high transmission efficiency are disclosed. Data coding and entropy coding are performed with correlation and grouping is used to increase coding efficiency. A method for signal processing, the method indues decapsulating the signal received over an Internet protocol network, obtaining a group reference value corresponding to a plurality of data included in one group through grouping and a difference value corresponding the group reference value from the decapsulated signal and obtaining the data using the group reference value and the difference value.

Claims

1. A method for signal processing, the method comprising:

decapsulating the signal received over an Internet protocol network;

obtaining a group reference value corresponding to a plurality of data included in one group through grouping and a difference value corresponding the group reference value from the decapsulated signal; and

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

2. The method of claim 1, wherein the group reference value is any one of a pilot reference value and a difference reference value.

3. The method of claim 1, wherein the grouping corresponds to one of external grouping and internal grouping.

4. The method of claim 1, wherein the grouping corresponds to one of domain grouping and data grouping.

5. The method of claim 1, wherein the data grouping is performed on a domain group.

6. The method of claim 5, wherein a time domain included in the domain grouping includes at least one of a time slot domain, a parameter set domain and a data set domain.

7. The method of claim 6, wherein a frequency domain included in the domain grouping includes at least one of a sample domain, a sub-band domain, a hybrid domain, a parameter band domain, a data band domain and a channel domain.

8. The method of claim 2, wherein one difference reference value is set from the plurality of the data included in the group.

9. The method of claim 1, further comprising reconstructing an audio signal using the obtained data as parameters.

10. The method of claim 1, wherein at least one of a grouping count, a grouping range and a presence or non-presence of the grouping is decided.

11. An apparatus for signal processing, the apparatus comprising:

a manager decapsulating the signal received over an Internet protocol network;

a value obtaining part obtaining a group reference value corresponding to a plurality of data included in one group through grouping and a difference value corresponding to the group reference value from the decapsulated signal; and

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

12. A method for signal processing, the method comprising:

generating a difference value using a group reference value corresponding to a plurality of data included in one group through grouping and the data; and

encapsulating and transferring the generated difference value over an Internet protocol network.

13. An apparatus for signal processing, the apparatus comprising:

a value generating part generating a difference value using a group reference value corresponding to a plurality of data included in one group through grouping and the data; and

a manager encapsulating and transferring the generated difference value over an Internet protocol network.

14. The apparatus of claim 13, wherein the manager transfers the group reference value and the difference value.