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Data coding/decoding method and apparatus and coded data recording medium

  • US 6,009,229 A
  • Filed: 07/26/1996
  • Issued: 12/28/1999
  • Est. Priority Date: 07/28/1995
  • Status: Expired due to Term
First Claim
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1. A method for recording picture data on a recording medium for special reproduction, comprising the steps of:

  • receiving said picture data;

    coding said picture data using intra-picture coding and predictive coding to provide a data stream containing at least one intra-picture coded picture data (I-picture), at least one bi-directional predictive coded picture (B-picture) and at least one predictive coded picture data (P-picture) in a predetermined order, wherein said at least one I-picture precedes said at least one P-picture;

    generating positional information representing a data location with respect to said at least one I-picture and said at least one P-picture;

    recording on said recording medium for special reproduction said at least one I-picture, said at least one B-picture and said at least one P-picture in an order in which the picture data is to be decoded during normal reproduction and said positional information; and

    wherein said step of generating generates said positional information such that said at least one P-picture is detectable upon special reproduction on the basis of said positional information without a stream detector.

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