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Method and apparatus for synchronizing audio and video signals

A video signal and audio signal technology, applied in the multimedia field, can solve problems such as reducing user viewing experience, video signal and audio signal are out of sync, and achieve the effect of enhancing user experience and improving quality

Active Publication Date: 2017-02-01
BOE TECH GRP CO LTD
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  • Summary
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Problems solved by technology

However, if figure 1 As shown, since the audio signal and the video signal are processed separately, it may cause the output of the processed video signal and the audio signal to be out of sync, resulting in a reduction in the user's viewing experience

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  • Method and apparatus for synchronizing audio and video signals
  • Method and apparatus for synchronizing audio and video signals
  • Method and apparatus for synchronizing audio and video signals

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Embodiment Construction

[0020] The technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present disclosure, not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts also belong to the protection scope of the present disclosure.

[0021] figure 1 A schematic block diagram of a known processing of video and audio signals is shown. Such as figure 1 As shown, after being decoded by the decoder, digital video data and digital audio data are respectively obtained. As mentioned above, digital video data and digital audio data are processed separately. For example, for digital audio data, an analog signal is obtained after a simple digital-to-analog conversion process, and provided to a playback device (such as ...

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Abstract

The invention provides a method and apparatus for synchronizing audio and video signals. The method comprises the following steps: extracting frame header information of each image frame contained in a video signal; and adjusting the output of an audio signal according to the frame header information of the image frames to maintain synchronous with the output of the video signal. According to the method and apparatus disclosed by the invention, the information of the image frames of the video signal is extracted, the corresponding image frame information is provided to the audio signal, therefore the output of the audio signal can be adjusted to ensure that audio output and video output maintain synchronous, and thus improving the quality of audio-visual programs and enhancing the user experience.

Description

technical field [0001] The present disclosure relates to the field of multimedia, in particular to a method and device for synchronizing audio and video signals. Background technique [0002] With the development of high-definition display technology, the resolution of images that can be displayed is getting higher and higher. For this reason, the performance of resources required for image processing of received video signals to finally display high-definition images on a display is also increasing. For example, for TVs or monitors with a resolution above 4K that are currently hot spots in the display field, most of them need to use FPGA or a dedicated processing chip with relatively powerful performance to process video signals. However, if figure 1 As shown, since the audio signal and the video signal are processed separately, it may cause the output of the processed video signal and the audio signal to be out of sync, resulting in reduced user viewing experience. Con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/43
CPCH04N21/4307H04N21/4302H04N21/43635H04N21/4392H04N21/44008H04N21/44
Inventor 段然
Owner BOE TECH GRP CO LTD
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