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Method and device for synchronizing audio-video signals

A signal synchronization and audio signal technology, applied in the direction of image communication, selective content distribution, electrical components, etc., can solve the problems of audio signal delay, audio and video signal out of synchronization, etc., to achieve synchronous playback and ensure the effect of audio-visual experience

Active Publication Date: 2016-03-02
SHENZHEN TCL NEW-TECH CO LTD
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  • Summary
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  • Description
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  • Application Information

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Problems solved by technology

[0003] The main purpose of the present invention is to solve the technical problem that the audio and video signals are not synchronized due to the delay of the audio signal due to wireless transmission

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  • Method and device for synchronizing audio-video signals
  • Method and device for synchronizing audio-video signals
  • Method and device for synchronizing audio-video signals

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Embodiment Construction

[0038] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0039] The present invention provides a method for synchronizing audio and video signals, see figure 1 , figure 1 It is a schematic flowchart of the first embodiment of the method for synchronizing audio and video signals of the present invention. In the first embodiment, the audio-video signal synchronization method includes:

[0040] Step S10, acquiring the audio signal delay data value formed by the wireless module of the audio-video signal synchronization device and the wireless speaker device.

[0041] In this embodiment, before the step S10, the audio and video signal synchronization device first needs to detect whether its own wireless module has established a wireless communication connection with the wireless speaker device, and determine whether the wireless module has established a wireless communication ...

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Abstract

The invention discloses a method for synchronizing audio-video signals. The method comprises the steps of acquiring the time-delay data value of audio signals formed by a wireless module of an audio-video signal synchronization device and a wireless loudspeaker box; calculating the picture playing time for each frame during the playing process of to-be-played video data according to the display format of the to-be-played video data; according to the time-delay data value and the picture playing time for each frame, calculating to-be-cached picture frames and generating and caching the pictures of corresponding cached frames; according to an audio-video playing instruction, successively playing cached pictures and to-be-played video data, and transmitting audio data corresponding to the to-be-played video data to a wireless audio device for enabling the playing of the audio data while playing the cached pictures at the same time. The invention also discloses a device for synchronizing audio-video signals. Based on the method and the device, cached pictures can be played within a period of time after receiving the audio-video playing instruction and before playing the audio data. In this way, the synchronized playing of audio and video data is realized. Meanwhile, the audio-visual experience effect of users can be ensured.

Description

technical field [0001] The invention relates to the technical field of audio and video playback, in particular to an audio and video signal synchronization method and device. Background technique [0002] With the popularity of wireless speaker equipment (WiFi speakers, 2.4G wireless speakers and Bluetooth speakers), wireless speaker equipment is more and more used in audio and video signal synchronization devices such as TVs, TV boxes, and projections. Since audio data needs to be encoded and decoded during wireless transmission, and the process of encoding and decoding audio data takes a certain amount of time, when playing corresponding audio and video data, audio signal delays will occur, affecting the user's audiovisual effect . Contents of the invention [0003] The main purpose of the present invention is to solve the technical problem that the audio and video signals are not synchronized due to the delay of the audio signal due to wireless transmission. [0004] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/43H04N21/433
CPCH04N21/4392H04N21/4302H04N21/43637H04N21/4112H04N21/43079H04N21/43076H04N21/4131
Inventor 杜双奇王子同谢仁礼
Owner SHENZHEN TCL NEW-TECH CO LTD