Audio and video signal synchronization method and device
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 and video signal asynchronous, audio signal delay, etc., to achieve synchronous playback and ensure the effect of audio-visual experience
Active Publication Date: 2018-09-21
SHENZHEN TCL NEW-TECH CO LTD
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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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[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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The invention discloses an audio and video signal synchronization method, comprising: acquiring the audio signal delay data value formed by the wireless module of the audio and video signal synchronization device and the wireless speaker device; calculating the value of the playing video data according to the display format of the video data to be played The playback time of each frame of picture; according to the delay data value and the playback time of each frame of picture, calculate the number of picture frames to be cached, generate and cache the picture with the corresponding number of frames; Play the video data, play the cached picture and transmit the audio data corresponding to the video data to be played to the wireless audio device for playing the audio data. The invention also discloses an audio and video signal synchronization device. The method and device provided by the invention ensure that the buffered images are played within the time period between receiving the audio and video playback instruction and before playing the audio data, realizing the synchronous playback of the audio and video data, and ensuring the user's audio-visual experience.
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] ...
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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