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Modifying data

  • US 7,729,508 B2
  • Filed: 01/11/2006
  • Issued: 06/01/2010
  • Est. Priority Date: 01/11/2006
  • Status: Expired due to Fees
First Claim
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1. A method comprising:

  • selecting a portion of a compressed data set to be modified by using an algorithm; and

    modifying data of the portion of the compressed data set to form a modified compressed data set having a pattern imperceptible to unaided human sensory perception but identifiable by processing the modified compressed data set using the algorithm, wherein the pattern is based on a subtractive digital patterning that deletes portions of the compressed data set.

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