Source end synchronization device and synchronization method applied to audio and video signals
An audio signal and synchronization device technology, which is applied in image communication, selective content distribution, electrical components, etc., can solve the problems that the clock system cannot be strictly synchronized, abnormal sound, loss or duplication of sound data, etc., to improve the synchronization transmission. performance, guaranteed real-time synchronization, and the effect of wide application prospects
Pending Publication Date: 2022-04-12
BOE TECH GRP CO LTD
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For the source end, the clock system of sound data cannot be strictly synchronized
[0003] In the prior art, the usual processing circuit will directly use the local clock for audio processing, which will inevitably result in the loss or duplication of sound data
In applications that require high sound quality, such as professional monitors, the loss or duplication of sound data caused by this sound processing method will lead to unacceptable sound anomalies, such as periodic ticking noise
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[0035] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.
[0036] It should be noted that in the description of this application, relative terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations, any such actual relationship or order exists. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements incl...
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The invention discloses a source end synchronization device and synchronization method applied to audio and video signals, and an audio and video display device. The source end synchronization device provided by the invention comprises an audio and video receiving unit which is used for receiving an externally input audio and video signal, analyzing the audio and video signal, outputting a video signal, an audio signal and a synchronization signal, transmitting the video signal to a video processing unit, and transmitting the audio signal and the synchronization signal to an audio processing unit; the video processing unit is used for performing frame caching on the video signal and generating a video output signal to be transmitted to an external display terminal; and the audio processing unit is used for generating an audio enable signal according to the synchronizing signal and the cache information of the frame cache of the video processing unit, and outputting an audio signal according to the audio enable signal. According to the embodiment of the invention, the audio enable signal is generated according to the frame buffer of the video signal and the synchronization signal, so that the synchronization of the video signal and the audio signal is realized at the source end, and the method has a wide reference prospect.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a source synchronization device and synchronization method applied to audio and video signals, and an audio and video display device. Background technique [0002] In a common audio and video processing system, the sound signal is usually embedded in the data stream when transmitting, and the clock signal is not transmitted separately. For the source side, the clock system of the sound data cannot be strictly synchronized. [0003] In the prior art, a common processing circuit directly uses a local clock for audio processing, which inevitably results in loss or repetition of sound data. In applications that require high sound quality, such as professional monitors, the loss or duplication of sound data caused by this sound processing method will lead to unacceptable sound anomalies, such as periodic ticking sound or background noise. Contents of the invention [0004] In or...
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IPC IPC(8): H04N21/43H04N21/439H04N21/44H04N21/6373
Inventor 马希通耿立华
Owner BOE TECH GRP CO LTD
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