Video and audio synchronization device and video and audio data synchronization method
A synchronization device and data synchronization technology, applied in the direction of image communication, selective content distribution, electrical components, etc., can solve the problems of inaccuracy, long processing time, inconvenient operation, etc., and achieve the effect of improving asynchrony
Active Publication Date: 2019-07-02
ATEN INT CO
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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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[0027] The invention provides an audio-video synchronization device, which utilizes a transmitter to connect a receiver to detect audio-video delay. The audio and video synchronization device may be a device having a digital audio and video transmission interface, and the digital audio and video transmission interface may be, for example, a High Definition Multimedia Interface (HDMI), but not limited thereto.
[0028] figure 1 It is a schematic diagram of an embodiment of the video-audio synchronization apparatus 10 of the present invention. like figure 1 As shown, the video-audio synchronization apparatus 10 includes a receiver 110 , a transmitter 120 , and a processor 130 . The processor 130 is coupled to the receiver 110 and the transmitter 120 . In one embodiment, the receiver 110 is an HDMI receiver, and the transmitter 120 is an HDMI transmitter. The processor 130 receives the start command at the first calibration time, and outputs characteristic image data to the t...
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The invention provides a video and audio synchronization device and a video and audio data synchronization method, wherein the video and audio synchronization device comprises a receiver, a transmitter and a processor; the processor is coupled to the receiver and the transmitter; the processor is used to receive the start instruction at the first correction time and outputs the feature image datato the transmitter in response to the start instruction; the transmitter is used to transmit the received feature image data to the receiver so that the processor can receive the feature image data atthe second correction time; and the processor is used to adjust the sound data delay parameter according to a time difference between the first correction time and the second correction time.
Description
technical field [0001] The present invention relates to a device and method for processing video and audio data; in particular, the present invention relates to an audio and video synchronization device and a method for synchronizing video and audio data. Background technique [0002] The video signal includes video signal and sound signal. Generally speaking, after the video signal is processed by the video device, the video signal is sent to the display device to output the image, and the sound signal is sent to the sound playback device to output the sound. In the process of audio and video signal processing, it is often affected by factors such as hardware resources, audio and video processing complexity, etc., resulting in a situation in which the output image and sound are out of sync. Generally speaking, the complexity of image signal processing is much higher than that of sound signal processing, so the processing time of image signal is often longer than that of sou...
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IPC IPC(8): H04N21/43
CPCH04N21/4307
Inventor 陈佑易杨昀林
Owner ATEN INT CO