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Method and apparatus for frame accurate access of digital audio-visual information

DC
  • US 5,864,682 A
  • Filed: 05/21/1997
  • Issued: 01/26/1999
  • Est. Priority Date: 07/14/1995
  • Status: Expired due to Term
First Claim
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1. A method for playing at a second presentation rate an audio-visual work that has been digitally encoded in a digital data stream for playback at a first presentation rate, wherein said digital data stream includes a sequence of video frame data, each video frame data in said sequence of video frame data corresponding to a video frame in said audio-visual work, the method comprising the computer-implemented steps of:

  • selecting a selected set of video frames from said audio-visual work based on said second presentation rate and sizes of video frame data that correspond to said video frames;

    constructing a second digital data stream that includes the video frame data that corresponds to each video frame of said selected set of video frames; and

    transmitting said second digital data stream to a decoder.

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