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. 04, 2012
Filed:
Nov. 29, 2007
Regunathan Radhakrishnan, Pacifica, CA (US);
Claus Bauer, San Francisco, CA (US);
Kent Bennett Terry, Millbrae, CA (US);
Brian David Link, Oakland, CA (US);
Hyung-suk Kim, Glendale, CA (US);
Eric Gsell, Valencia, CA (US);
Regunathan Radhakrishnan, Pacifica, CA (US);
Claus Bauer, San Francisco, CA (US);
Kent Bennett Terry, Millbrae, CA (US);
Brian David Link, Oakland, CA (US);
Hyung-Suk Kim, Glendale, CA (US);
Eric Gsell, Valencia, CA (US);
Dolby Laboratories Licensing Corporation, San Francisco, CA (US);
Abstract
Signatures that can be used to identify video and audio content are generated from the content by generating measures of dissimilarity between features of corresponding groups of pixels in frames of video content and by generating low-resolution time-frequency representations of audio segments. The signatures are generated by applying a hash function to intermediate values derived from the measures of dissimilarity and to the low-resolution time-frequency representations. The generated signatures may be used in a variety of applications such as restoring synchronization between video and audio content streams and identifying copies of original video and audio content. The generated signatures can provide reliable identifications despite intentional and unintentional modifications to the content.