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High-performance player for distributed, time-based media

  • US 6,005,600 A
  • Filed: 10/18/1996
  • Issued: 12/21/1999
  • Est. Priority Date: 10/18/1996
  • Status: Expired due to Term
First Claim
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1. A system for playing digital movie data under the control of a user, wherein the movie data comprises a sequence of frames, said system comprising:

  • display means for displaying the movie data to said user;

    control means, coupled to said display means, for providing the movie data to said display means under control of said user;

    user interface means, coupled to said control means, for interacting with said user to provide said control of said user;

    at least one source means that stores a portion of the movie data; and

    buffer management means, coupled to said control means and to said source means, for storing a subset of the movie data and providing the movie data as needed to said control means, said buffer management means comprising;

    local digital memory that stores a plurality of frames including future frames and history frames,prefetch means for requesting future frames from said source means, wherein said prefetch means requests every dth future frame when said source means cannot provide future frames at the rate at which they are requested, and wherein d is greater than one; and

    means for releasing a select frame from said local digital memory when a frame requested by said prefetch means becomes available.

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