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Audio video synchronization method and device

An audio and video synchronization, audio and video technology, applied in the direction of image communication, selective content distribution, electrical components, etc., can solve the problems of sound and picture asynchrony, errors, etc.

Inactive Publication Date: 2015-09-09
HISENSE VISUAL TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0004] However, when playing audio and video files with different bit rates or formats, or switching the signal channel for playing audio and video, the delay between audio and video will change accordingly, so that the time compensation value manually set by the user or the TV preset There is an error between the time compensation value of the fixed duration and the actual delay, resulting in the sound and picture still being out of sync

Method used

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  • Audio video synchronization method and device
  • Audio video synchronization method and device

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Embodiment Construction

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0030] Figure 1A It is a schematic flow chart of the audio-video synchronization method provided by Embodiment 1 of the present invention. Such as Figure 1A As shown, the audio-video synchronization method provided in this embodiment includes:

[0031] S101. Obtain the audio processing duration of the audio signal and the video processing ...

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Abstract

The invention provides an audio video synchronization method and device. The audio video synchronization method provided by the invention comprises steps of acquiring audio processing duration of an audio signal and video processing duration of a video signal in audio and video signals of preset duration; according to the difference value of the audio processing duration and the video processing duration, gaining an audio video compensation value; according to the audio video compensation value, adjusting output times of the audio signal and the video signal in the audio and video signals, so as to enable the audio signal and the video signal to keep pace with each other. Through adoption of the method, when different channels and different audio video signals are broadcasted, the audio video compensation value can be automatically acquired according to specific processing duration or other parameters in broadcasting of the audio and video signals, so as to broadcast the audio and video signals synchronously. Furthermore, a corresponding preset audio video compensation value can be acquired directly according to broadcast feature information of the audio and video signals, so as to broadcast the audio video signals synchronously.

Description

technical field [0001] The invention relates to the field of home appliances, in particular to an audio and video synchronization method and device. Background technique [0002] When the TV is playing audio and video, the sound and picture need to be synchronized to ensure the user's viewing experience. [0003] At present, because in the audio and video played on TV, especially high-definition video, the proportion is increasing, and the encoding formats, playback channels, and decoding methods of these high-definition videos are also various. Although the TV is receiving audio and video signals At the same time, the audio and video signals will be processed at the same time, but generally speaking, the processing time required by the TV to process the video image is longer than the processing time of the audio, which may cause sound and video signals to appear when the audio and video are played. The phenomenon that the screen is out of sync. At present, when the user f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/43H04N21/8547
CPCH04N21/4307H04N21/8547
Inventor 王兆庆朱建坤秦曙光
Owner HISENSE VISUAL TECH CO LTD
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