Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Jun Tian0
Date of Patent
June 17, 2008
0Patent Application Number
100358300
Date Filed
October 18, 2001
0Patent Citations Received
Patent Primary Examiner
Patent abstract
The disclosure describes methods for using digital watermarking to authenticate digital media signals, such as images, audio and video signals. It also describes techniques for using embedded watermarks to repair altered parts of a media signal when alteration is detected. Alteration is detected using hashes, digital watermarks, and a combination of hashes and digital watermarks.
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