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.:

US 9462232 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 04, 2016

Filed:

Oct. 11, 2012
Applicants:

At&t Intellectual Property I, L.p., Atlanta, GA (US);

The Regents of the University of California, Oakland, CA (US);

Inventors:

Dipak Ghosal, El Cerrito, CA (US);

Canhui Ou, Danville, CA (US);

Zhi Li, San Ramon, CA (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 21/00 (2013.01); H04N 7/167 (2011.01); H04N 21/254 (2011.01); H04N 21/434 (2011.01); H04N 21/44 (2011.01); H04N 21/4788 (2011.01); H04N 21/8358 (2011.01);
U.S. Cl.
CPC ...
H04N 7/1675 (2013.01); H04N 21/254 (2013.01); H04N 21/434 (2013.01); H04N 21/44 (2013.01); H04N 21/4788 (2013.01); H04N 21/8358 (2013.01);
Abstract

A method includes inspecting a packet stream sent from a set-top box device via a network. The packet stream includes video content that is divided into a plurality of subsections. The method includes generating a plurality of signatures by applying a wavelet transform to each of the plurality of subsections, and determining a match between the video content and protected video content based at least in part on a comparison of the plurality of signatures to one or more stored signatures generated based on the protected video content.


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