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. 23, 2003
Filed:
Mar. 08, 1999
Raymond B. Wolfgang, Exton, PA (US);
Edward J. Delp, III, West Lafayette, IN (US);
Purdue Research Foundation, West Lafayette, IN (US);
Abstract
A method of determining if at least a portion of a suspect signal ( ) is derived from a watermarked original signal ( ) includes the steps of providing a watermark ( ) and creating the watermarked original signal ( ) by incorporating the watermark ( ) onto an original signal ( ). At least one first watermark indicator is generated ( ) based on the the watermarked original signal ( ) and the watermark ( ) and at least one second watermark indicator is generated ( ) based on the suspect signal ( ) and the watermark ( ). A determination is made ( ) whether at least a portion of the suspect signal ( ) is derived from the watermarked original signal ( ) is made based on the at least one first watermark indicator ( ) and the at least one second watermark indicator ( ).