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Apparatus for a synchronized playback of audio-video signals

  • US 6,078,725 A
  • Filed: 01/07/1998
  • Issued: 06/20/2000
  • Est. Priority Date: 01/09/1997
  • Status: Expired due to Term
First Claim
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1. An apparatus for synchronized playback of audio-video signals representing an audio signal component and a video signal component in synchronization with each other by decompressing compressed digital data of the audio signal component and the video signal component, said apparatus comprising:

  • means for obtaining a reference time indicating a reproduction time passage of the audio signal component from a sum of a reproduced data amount of the audio signal component and an error data amount of said audio signal component rejected because of a data error, based upon header information of the compressed digital data, which includes a sampling rate of the audio signal component and a frame rate of the video signal component; and

    means for detecting a progress of the video signal component by comparing said reference time to a real frame number of the video signal component, said real frame number indicating a number of processed picture frames and rejected error picture frames.

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