US Patent 7886151 Temporal synchronization of video and audio signals

Patent 7886151 was granted and assigned to Purdue Research Foundation on February, 2011 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Purdue Research Foundation

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7886151

Date of Patent

February 8, 2011

Patent Application Number

10349322

Date Filed

January 21, 2003

Patent Primary Examiner

‌

Michael Pyzocha

Patent abstract

A protocol for temporal synchronization of media signals with temporal components is used for digital watermarking and other applications. The synchronization protocol achieves initial synchronization by finding an initial synchronization key through analysis of a temporal media signal stream. It then uses features of the stream and a queue of one or more keys from previous frames to derive subsequent keys to maintain synchronization. If synchronization is lost due to channel errors or attacks, for example, the protocol uses the initial synchronization key to re-establish synchronization. In digital watermarking applications, the synchronization protocol is agnostic to the watermark embedding and reading functions.