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:
Jul. 24, 2012
Filed:
Jan. 10, 2006
Applicants:
Eric Diehl, Liffre, FR;
Alain Durand, Rennes, FR;
Inventors:
Eric Diehl, Liffre, FR;
Alain Durand, Rennes, FR;
Assignee:
Thomson Licensing, Boulogne Billancourt, FR;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/00 (2006.01); H04L 9/08 (2006.01); H04L 9/32 (2006.01); G06F 21/00 (2006.01); G06F 15/16 (2006.01); G06F 11/30 (2006.01); G06F 12/14 (2006.01); G06F 7/04 (2006.01); G06F 17/30 (2006.01); H04N 7/167 (2006.01); H04N 7/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A secure pre-recorded medium and a method for descrambling encrypted content thereon. When a player wants to access the content, a secure processor on the medium verifies that the player has not been revoked, preferably by comparing an identity of the player with identities in a revocation list, after which a mutual authentication is performed. The secure processor then verifies that the player has the rights to access the content and provides the player with the key necessary to descramble the content, whereafter the player descrambles the content.