Audio-visual synchronization device and method for synchronizing audio-visual data

Abstract

The invention provides an audio-video synchronization device and a video-audio data synchronization method, wherein the audio-video synchronization device includes a receiver, a transmitter and a processor. The processor is coupled to the receiver and the transmitter. The processor receives the initial command at the first calibration time, and outputs characteristic image data to the transmitter in response to the initial command. The transmitter sends the received feature image data to the receiver so that the processor receives the feature image data at a second correction time. The processor adjusts the sound data delay parameter according to the time difference between the first correction time and the second correction time.

Description

technical field [0001] The invention relates to a device and method for processing video and audio data; specifically, the invention relates to a video and audio synchronization device and a method for synchronizing video and audio data. Background technique [0002] The audio-visual signal includes image signal and audio signal. Generally speaking, after the audio-visual signal is processed by the audio-visual device, the image signal is transmitted to the display device for outputting the image, and the audio signal is transmitted to the audio playback device for outputting sound. In the audio-visual signal processing process, it is often affected by factors such as hardware resources and the complexity of audio-visual processing, resulting in a situation where the output video and sound are not synchronized. Generally speaking, the complexity of video signal processing is much higher than that of audio signal processing, so the processing time of video signals is often lo...

AI Technical Summary

Problems solved by technology

In the process of audio-visual signal processing, it is often affected by factors such as hardware resources and the complexity of audio-visual processing, resulting in a situation where the output image and sound are not synchronized.

Generally speaking, the complexity of video signal processing is much higher than that of audio signal processing, so the processing time of video signals is often longer than the processing time of audio signals, so the output time of audio signals must be delayed to Improve the problem of out-of-sync audio and video signal output

Most of the improvement solutions for video and audio out-of-sync proposed in the prior art need to rely on manual settings or additional external devices to complete, which is inconvenient to operate

In addition, manual settings may introduce human inaccuracies

Therefore, the existing audio-video synchronization technology still needs to be improved

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