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Method and apparatus for adaptive data compression

  • US 5,949,355 A
  • Filed: 08/21/1997
  • Issued: 09/07/1999
  • Est. Priority Date: 12/06/1994
  • Status: Expired due to Fees
First Claim
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1. A method of data compression for compressing a data record made up of a plurality of data elements each made up of a plurality of bits comprising:

  • a) scanning the data record to characterize the data content of the record by at least identifying and counting the occurrence of types of data elements, and classifying data elements according to a set of predetermined groups;

    b) determining within the data record the most significant of the set of predetermined groups;

    c) identifying patterns of data elements in the data record in response to the step of determining including detecting and encoding repeating blocks of data elements;

    d) assigning at least one of a set of predetermined compression modes in response to the identifying step; and

    e) compressing the data record according to at least one of the compression modes responsive to the assigning.

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