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File update performing comparison and compression as single process

  • US 6,496,974 B1
  • Filed: 04/28/2000
  • Issued: 12/17/2002
  • Est. Priority Date: 06/08/1998
  • Status: Expired due to Term
First Claim
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1. In a method of generating update data on a second computer and providing same to a first computer so that the first computer can upgrade an original file thereon to an upgraded file, the method including, on the second computer:

  • comparing the original and upgraded files to generate update data by which the former can be used to produce the latter, compressing said update data, and transferring the update data to the first computer, an improvement comprising performing both the comparing and compressing steps in a single process that both compares the original and upgraded files, and yields compressed update data.

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