Encoding integration system and method and decoding integration system and method

An integrated system and integrated method technology, applied in the field of multimedia signal processing and source coding, can solve the problems of lack of error concealment mechanism, inability to fully adapt to complex network conditions, poor quality of music signal coding, etc.

Active Publication Date: 2008-03-12
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, using the above-mentioned existing various encoders can not achieve good results, that is, the existing encoding and decoding techniques have the following disadvantages:
Although AMR-WB encodes speech signals with high quality, its encoding quality for music signals is poor
[0015] 2. Lack of scalability
The codec system cannot adaptively adjust the working mode according to the current network conditions, so it cannot achieve the best transmission quality under this condition
[0016] 3. Lack of error concealment mechanism, resulting in inevitable data loss during network transmission
So it is not yet fully applicable to complex network conditions

Method used

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  • Encoding integration system and method and decoding integration system and method
  • Encoding integration system and method and decoding integration system and method
  • Encoding integration system and method and decoding integration system and method

Examples

Experimental program
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Embodiment 1

[0115] Referring to Fig. 1, an embodiment of the present invention provides an encoding integration system, which specifically includes a receiving module, an extraction module, a classification module, a sub-encoder, a control module, a merging module, and an encapsulation and transmission module;

[0116] (1) receiving module, used for receiving multimedia signal;

[0117] (2) Extraction module, for from the multimedia signal that receiving module receives, extracts correlation information such as correlation degree, time difference, intensity difference between each signal of multimedia signal, obtains one main signal according to multimedia signal;

[0118] When the receiving module receives multiple multimedia signals, the extracting module can be specifically used to extract correlation information between the multiple multimedia signals from the multiple multimedia signals received by the receiving module, and combine the multiple multimedia signals to obtain a main sign...

Embodiment 2

[0142] Referring to FIG. 3 , an embodiment of the present invention provides an integrated decoding system, which specifically includes a receiving and decapsulating module, an analyzing module, an allocating module, a sub-decoder, a control module, and a cache output module;

[0143] (1) a receiving and decapsulating module, used to receive code stream data, decapsulate the code stream data, and obtain coded data;

[0144] (2) Parsing module, for parsing the encoded data obtained by the receiving and decapsulating modules, to obtain sub-encoder encoded code streams, specific parameters, signal types and correlation information;

[0145] Further, the analysis module is also used to analyze the high-frequency information of the main signal from the encoded data;

[0146] (3) distribution module, used for according to the signal type that analysis module obtains, the sub-encoder code stream that analysis module obtains is sent to corresponding sub-decoder;

[0147] Wherein, the...

Embodiment 3

[0169] Referring to Fig. 5, the embodiment of the present invention also provides a coding integration method, which specifically includes the following steps:

[0170] Step 101: Set specific parameters at the sending end according to channel transmission conditions and system output code rate requirements.

[0171] Step 102: According to a specific parameter, extract the correlation information of the multimedia signal from the received multimedia signal, and obtain a main signal according to the multimedia signal;

[0172] Further, the high-frequency information of the main signal can also be extracted from the main signal to obtain the low-frequency part of the main signal.

[0173] Wherein, the specific parameter may be the precision of extracting the high-frequency information of the main signal or other scaling parameters and the like.

[0174] Wherein, the step of extracting correlation information and obtaining one main signal may specifically include: extracting corr...

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Abstract

The present invention discloses a code integrating system and method and a decode integrating system and method, which belongs to the multimedia signal processing and information source coding field. The code integrating system comprises a receiving module, an extracting module, a sort module, a sub-coder, a control module, a merge module and a packing and transmitting module; the decode integrating system comprises a receiving and unpacking module, an analyzing module, a sub-decoder, a control module and a buffer memory outputting module. The code integrating method comprises that relevant information is extracted from the multimedia signal and one route main signal; the main signal or the multimedia signal is classified; the main signal is coded by the sub-coder, and then merged with various parameters and outputted after packing. The decode integrating method comprises that code stream data is received, the main signal is gained by decoding after unpacking and analyzing, and the main signal or the processed main signal is outputted. The present invention can fully exert the ascendancy of various individualized multimedia coder, and meet the requirements of subjective feeling characteristics and different channels.

Description

technical field [0001] The invention relates to the fields of multimedia signal processing and information source coding, in particular to an encoding integration system and method, and a decoding integration system and method. Background technique [0002] With the continuous development of communication technology, people can use wired or wireless networks to communicate conveniently at different times and places. The multimedia transmission service is also gradually popularized. People can transmit multimedia data including audio streams, video streams, etc. in a communication network in real time. However, the communication bandwidth that multimedia data can occupy is still very limited, and the multimedia data must be compressed and coded to ensure good transmission and playback quality. [0003] Audio signal is an important part of multimedia signal, and together with video signal, it provides the two most important signal sources for people's subjective perception. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/52H04N7/64H04N19/132H04N19/184H04N19/30H04N19/65H04N19/89
Inventor 窦维蓓张树华侯欢夏田张斌
Owner TSINGHUA UNIV
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