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:
Oct. 29, 2013
Filed:
May. 19, 2011
Minh Son Tran, Bourg la Reine, FR;
Pierre-sernin Dominique Sarda, Montrouge, FR;
Geoffroy Virgile Baudin, Oissel, FR;
Minh Son Tran, Bourg la Reine, FR;
Pierre-Sernin Dominique Sarda, Montrouge, FR;
Geoffroy Virgile Baudin, Oissel, FR;
Nagra France SAS, , FR;
Abstract
A method embeds tracing secret data into multimedia contents delivered to particular users. The method descrambles a first scrambled video stream having alternate values to obtain a personalized video stream corresponding to an original video stream by a decoder comprising at least a security unit and a descrambling unit, the personalized video stream being obtained by restoring the alternate values by personalized values taking into account an internal parameter on the security unit and received control data containing the original values and their location in the modified stream.