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:
Mar. 23, 2010
Filed:
Feb. 18, 2005
Applicants:
Michel Maillard, Rambouillet, FR;
Dominique Le Floch, Montrouge, FR;
Inventors:
Michel Maillard, Rambouillet, FR;
Dominique Le Floch, Montrouge, FR;
Assignees:
Nagra Thomson Licensing, Boulogne-Billancourt, FR;
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 7/167 (2006.01); G06F 15/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for securing a portable security module for use with a decoding element, the portable security module and the decoding element allowing to descramble scrambled audiovisual information. The method comprises analyzing at the portable security module a sequence of command messages, the command messages of the sequence being received at the portable security module at distinct times.