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Audio-frequency decoding system and method with ring buffer

A technology of decoding system and buffer, applied in the field of audio decoding system with ring buffer

Inactive Publication Date: 2008-12-03
SUNPLUS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the known LPCM audio decoding device and method still have room for improvement

Method used

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  • Audio-frequency decoding system and method with ring buffer
  • Audio-frequency decoding system and method with ring buffer
  • Audio-frequency decoding system and method with ring buffer

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Embodiment Construction

[0020] Figure 6 It is a block diagram of an audio decoding system with a ring buffer in the present invention, which receives and maintains the synchronization of an audio data stream, the audio data stream includes a plurality of audio frames, and the audio frame is used as a minimum decoding unit , wherein the audio data stream is in linear pulse code modulation format and is formed by a plurality of audio data packets, and each audio data includes a plurality of complete or partial audio frames. The audio decoding system includes a ring buffer 520 (ring buffer), an analysis device 510 and a decoding device 530 .

[0021] and please refer to Figure 7 A schematic diagram of the operation of the audio decoding system with a ring buffer of the present invention is shown. The ring buffer 520 is used to store a plurality of audio frames. It utilizes a BTS_STR_ADDR signal to record the start position of the stored multiple audio frames, and utilizes a BTS_END_ADDR signal to re...

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Abstract

An audio decoding system with circular buffer comprises a circular buffer, an analyzing unit and a decoding unit. It features that analyzing unit can make justification of minimum decoding unit in audio data stream to initial position of circular buffer through audio data stream character and synchronous mechanism hidden in initial position of circular buffer so that automatic synchronization result can be still achieved when data increase or data decrease is caused by error of audio data stream transmission.

Description

technical field [0001] The present invention relates to an audio decoding system and method, in particular to an audio decoding system and method with a ring buffer. Background technique [0002] figure 1 It is a block diagram of a DVD playback device 100, which includes a user interface 28, a control module 29, a main control unit 21, a multi-channel decoder 22, an audio decoder 231, a video decoder 232, an audio A post-processing unit 24 , an audio output unit 25 , a video post-processing unit 26 and a video output unit 27 . The DVD playback device 100 reads the data recorded on an optical disc (not shown) through an optical reading device (not shown), and the main control unit 21 sends the read video and audio streams to the multiplexer 22 is divided into a video data stream (video stream) and an audio data stream (audio stream), and outputs the audio data stream and the video data stream to the audio decoder 231 and the video decoder 232 respectively. After the video ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L19/04G10L19/08
Inventor 陈昱志黄景明
Owner SUNPLUS TECH CO LTD