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Method of recording picture information, record carrier, and picture retrieval and reproduction device for reading the record carrier

  • US 5,583,653 A
  • Filed: 02/10/1995
  • Issued: 12/10/1996
  • Est. Priority Date: 09/19/1990
  • Status: Expired due to Term
First Claim
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1. A method of recording picture information on a record carrier, comprising:

  • scanning at least one picture on a record carrier to provide a picture information signal,converting said picture information signal into at least first and second absolutely coded pictures, each absolutely coded picture representing said one picture as a luminance distribution defined by a two dimensional array of luminance pixels having predetermined luminance values, the number of luminance pixels of said second absolutely coded picture being greater than the number of luminance pixels of said first absolutely coded picture, said first and second absolutely coded pictures thereby forming a group of representations of the same picture with different resolutions,deriving, for at least said one picture, at least one residually coded picture from said picture information signal;

    said one residually coded picture comprising residual codes which, when combined with said second absolutely coded picture, represent said one picture with higher resolution than the resolution of said second absolutely coded picture,recording said first absolutely coded picture in one part of a given picture file,recording said second absolutely coded picture in an other part of said given picture file following said one part, andrecording said residually coded picture in yet another part of said given picture file following said other part,whereby each part of the file including a coded picture representing a lower resolution picture of said one picture is followed by a different part of the file including a coded picture representing a higher resolution picture of said one picture.

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