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    • 9. 发明授权
    • System and method for in-band A/V timing measurement of serial digital video signals
    • 串行数字视频信号的带内A / V定时测量系统和方法
    • US08300147B2
    • 2012-10-30
    • US12792597
    • 2010-06-02
    • Michael J. StreinEfthimis StefanidisJames L. Jackson
    • Michael J. StreinEfthimis StefanidisJames L. Jackson
    • H04N9/475
    • H04N17/004
    • A system and method for characterizing the relative offset in time between audio and video signals and enables the receiver of the audio and video signals to resynchronize the audio and video signals. Signal characterization data is dynamically captured and encoded into frames of video and audio data that is output by a television origination facility. The signal characterization data is extracted by the receiver and signal characterization data is captured for the received frames. The extracted signal characterization data is compared with the captured signal characterization data to compute the relative offset in time between the video and one or more audio signals for a frame. The receiver may then resynchronize the video and audio signals using the computed relative offset.
    • 用于表征音频和视频信号之间的时间上的相对偏移的系统和方法,并且使音频和视频信号的接收器能够重新同步音频和视频信号。 信号特征数据被动态捕获并编码成由电视发起设备输出的视频和音频数据的帧。 信号表征数据由接收机提取,并且针对接收到的帧捕获信号表征数据。 将所提取的信号表征数据与捕获的信号表征数据进行比较,以计算视频与一帧或多帧音频信号之间的时间上的相对偏移。 然后,接收机可以使用所计算的相对偏移重新同步视频和音频信号。