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Compression/decompression using reversible embedded wavelets

  • US 5,966,465 A
  • Filed: 05/03/1996
  • Issued: 10/12/1999
  • Est. Priority Date: 09/21/1994
  • Status: Expired due to Term
First Claim
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1. An encoder comprising:

  • a memory; and

    a forward transform operating on data in the memory, wherein the transform is computed and stored in the memory by storing calculation results in locations containing no longer necessary information such that the forward transform is computed in place in the memory;

    wherein the memory comprises;

    a plurality of lines of memory; and

    a line buffer having a plurality of entries containing pointers to the plurality of lines of memory, wherein each of the plurality of entries are associated with an individual memory lines, wherein the pointers are moved between entries in the line access buffer to resemble scrolling of the memory without moving the data in the memory lines.

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