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:
Feb. 08, 2011
Filed:
Jan. 21, 2003
Edward J. Delp, West Lafayette, IN (US);
Eugene T. Lin, Herndon, VA (US);
Edward J. Delp, West Lafayette, IN (US);
Eugene T. Lin, Herndon, VA (US);
Purdue Research Foundation, West Lafayette, IN (US);
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.