The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 26, 2006
Filed:
Sep. 13, 2001
Dmitri V. Chmounk, Novosibirsk, RU;
Richard J. Beaton, Burnaby, CA;
Darrell P. Klotzbach, San Jose, CA (US);
Paul R. Goldberg, Palo Alto, CA (US);
Dmitri V. Chmounk, Novosibirsk, RU;
Richard J. Beaton, Burnaby, CA;
Darrell P. Klotzbach, San Jose, CA (US);
Paul R. Goldberg, Palo Alto, CA (US);
DTS Canada, ULC, , CA;
Abstract
A method and apparatus for adding watermark data to an input signal is provided. For this method watermark data is embedded into the input signal by modulating elements of the input signal to predefined relationships in reference to other elements of the input signal. By using referential relationships and by using patterned sequences, one or more bits of data can robustly be embedded. Further, a method and apparatus for recovering data embedded by the method and apparatus of the present invention, are also provided. To recover the embedded data, differences between elements of the input signal to reference elements of the signal are calculated and checked against predefined relationships. Predefined relationships thus found are used to recover pieces of the embedded information.