×

Methods and apparatus for embedding and recovering watermarking information based on host-matching codes

  • US 7,159,118 B2
  • Filed: 01/31/2002
  • Issued: 01/02/2007
  • Est. Priority Date: 04/06/2001
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method for embedding watermarking information, comprising:

  • providing a host signal;

    calculating at least one feature of said host signal;

    extracting said at least one feature from said host signal;

    providing data to be embedded in the host signal;

    associating distinct input data strings of said data with distinct code sets;

    matching each of said at least one feature with a code from each code set;

    selecting codes from the associated code sets to represent said input data strings based on said matching; and

    embedding said selected codes into the host signal to provide a watermarked signal.

View all claims
  • 5 Assignments
Timeline View
Assignment View
    ×
    ×