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Modular error embedding

  • US 5,970,140 A
  • Filed: 08/02/1996
  • Issued: 10/19/1999
  • Est. Priority Date: 05/08/1996
  • Status: Expired due to Fees
First Claim
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1. A method of embedding auxiliary data into digital host data of any kind containing noise in the low-order bits comprising the steps of:

  • selecting values from said digital host data in a sequence determined by a digital key;

    creating a digital representation of said auxiliary data in the form of a sequence of individual bit values;

    selecting from said digital host data a block of values having a center and a first offset value obtained from said center of said block;

    replacing individual host data values with a second block offset value determined from said auxiliary data; and

    outputting said replacement values with said auxiliary data embedded into a file format specified for said digital host data.

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