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:
Aug. 18, 2009
Filed:
Jun. 10, 2002
Applicants:
André Kudelski, Lutry, CH;
Marco Sasselli, Chardonne, CH;
Inventors:
André Kudelski, Lutry, CH;
Marco Sasselli, Chardonne, CH;
Assignee:
Nagravision SA, Cheseaux-sur-Lausanne, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 21/00 (2006.01); H04N 7/167 (2006.01);
U.S. Cl.
CPC ...
Abstract
System for controlling the transmission of information between a receiver and a security module, especially for a pay television system, in which the transmitted information is encrypted and decrypted by means of a unique encryption key stored, on the one hand, in the receiver and, on the other hand, in the security module.