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A system and method for quickly playing multimedia information

A multimedia information and fast technology, applied in the multimedia field, can solve problems such as flexible and effective solutions for high-quality fast playback functions

Inactive Publication Date: 2008-01-16
COMMUNICATION UNIVERSITY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0078] To sum up, for the video and audio player systems that are widely used now, there is no flexible and effective solution for the high-quality fast playback function. How to design a player that is compatible with the existing player structure and has a high-quality fast playback function multimedia players, has become a problem that needs to be solved

Method used

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  • A system and method for quickly playing multimedia information
  • A system and method for quickly playing multimedia information
  • A system and method for quickly playing multimedia information

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Experimental program
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Embodiment approach

[0143] The whole algorithm first takes out the first W values ​​in the speech segment and directly stores them in the output sequence; then takes out the next segment of speech according to the value of Sa, that is, starts from the Sa point, and always takes W points; then Compare the first Wov points in these W points with the last Wov points of the output sequence, and compare the consistency between them; record the comparison, and then the entire analysis window (that is: intercept the window of W points) to Finally, move a sample value, then compare the first Wov points in the new sequence with the last Wov points in the output sequence, and record the comparison results at the same time; do Kmax times in this way, and then take out the most consistent one in the comparison results In this case, the first Wov points of the intercepted speech sequence and the last Wov points of the output sequence are superimposed in a certain way, and then the remaining Ss points in the wi...

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Abstract

The invention discloses a system and a method, which can quickly play multimedia information. The invention includes: a quick audio decoding module used to quickly decode audio signal; a time domain audio segmentation module used to segment the pulse coding signal which is quickly decoded from the audio signal by the quick audio decoding module; a fast-forward and fast-backward sorting module used to sort the audio segments after the time domain audio segmentation module conducts segmentation; an audio time domain deleting and coupling module used to determine cross correlations among audio segments and further execute coupling and deletion after the fast-forward and fast-backward sorting module conducts sorting; and an audio-video separation module used to separate audio and video from the multimedia information before the audio signal is quickly decoded. The invention solves the problem during quick synchronous play that the accompaniment of high quality sound can not be realized when the multimedia information is fast forward and fast backward.

Description

technical field [0001] The invention relates to the field of multimedia, in particular to a system and method for quickly playing multimedia information. Background technique [0002] Digital multimedia includes digital media of sound and visual signals. Usually the job of the player is to separate the sound and video information in the media information, decode them separately, and play them synchronously. [0003] With the introduction of various new codec schemes, the quality of video playback is getting higher and higher, such as MPEG-4, H.264 and so on. From ordinary TVs to high-definition TVs, with the improvement of video playback quality, people pay more and more attention to the audio playback quality in media information. From the early MEPG-1Layer3 to the later AAC and other excellent coding schemes, the improvement of sound quality brings people higher enjoyment. [0004] The following focuses on the currently widely used MEPG-2 AAC audio decoding process. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/52H04N7/26H04N19/44
Inventor 张勤王晖王雨田李传珍
Owner COMMUNICATION UNIVERSITY OF CHINA
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