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Processing of compact functional diferences

  • US 20080040401A1
  • Filed: 05/09/2007
  • Published: 02/14/2008
  • Est. Priority Date: 06/20/2003
  • Status: Active Grant
First Claim
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1. A method for performing file differencing, comprising:

  • identifying a plurality of regions in an original version of software image and in a new version of a software image, wherein the plurality of regions comprise compact functional differences (CFD) preprocessing regions; and

    preprocessing the plurality of regions, comprising, examining in the original version and the new version;

    identifying matching paths new version and the old version using approximate matching techniques;

    analyzing differences between corresponding regions in the new version and the old version; and

    describing the differences using a transformation that depends on values of groups of N bytes in the corresponding regions.

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