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:
May. 11, 2010
Filed:
Oct. 28, 2005
Shien-tai Pan, Laguna Niguel, CA (US);
Bing Wang, Aliso Viejo, CA (US);
Hoai Le, Huntington Beach, CA (US);
Yi LI, Foothill Ranch, CA (US);
Victor Kai-chieh Liang, Irvine, CA (US);
Maurice Chow, Irvine, CA (US);
Richard Thai, Fountain Valley, CA (US);
Shien-Tai Pan, Laguna Niguel, CA (US);
Bing Wang, Aliso Viejo, CA (US);
Hoai Le, Huntington Beach, CA (US);
Yi Li, Foothill Ranch, CA (US);
Victor Kai-Chieh Liang, Irvine, CA (US);
Maurice Chow, Irvine, CA (US);
Richard Thai, Fountain Valley, CA (US);
Other;
Abstract
A two level cross-correlation based system for watermarking continuous digital media at the system application level. It is a post-compression process for watermarking where no a priori knowledge of the underlying compression algorithm is required. Per each compressed media frame, a current unique digital signature is generated based on the data from the current compressed frame plus the digital signature that has been previously generated. The signature thus generated is then used in conjunction with the next compressed frame to generate the next unique digital signature. All digital signatures are correlated according to the above process until a 'reset' signal is issued. A new chain of correlated digital signatures is produced by the system with a pre-determined initial signature.