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Vector data compression

  • US 5,760,716 A
  • Filed: 08/21/1996
  • Issued: 06/02/1998
  • Est. Priority Date: 08/21/1996
  • Status: Expired due to Term
First Claim
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1. A method of compressing vector data using a history buffer, comprising the steps of:

  • normalizing the vector data, wherein the vector data is comprised of one or more primitives representing one or more graphics objects and one or more coordinate values indicating locations for each of the graphics object, and the normalizing step comprises the steps of translating the locations of the graphics objects to an origin and scaling the coordinate values of the graphic objects;

    searching the history buffer for a longest matching vector data that matches the normalized vector data; and

    when the searching step finds the longest matching vector data, encoding the longest matching vector data found in the history buffer by assigning a substitution code.

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