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. 11, 2015
Filed:
Dec. 29, 2010
Applicants:
Ettore Benedetti, Hoofddorp, NL;
Arnoud Evert Van Foreest, Hoofddorp, NL;
Inventors:
Ettore Benedetti, Hoofddorp, NL;
Arnoud Evert Van Foreest, Hoofddorp, NL;
Assignee:
Irdeto B.V., Hoofddorp, NL;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 7/167 (2011.01); H04N 7/16 (2011.01); H04N 21/266 (2011.01); H04N 21/418 (2011.01); H04N 21/4623 (2011.01); H04L 9/08 (2006.01);
U.S. Cl.
CPC ...
H04N 7/163 (2013.01); H04L 9/0869 (2013.01); H04N 21/26606 (2013.01); H04N 21/4181 (2013.01); H04N 21/4623 (2013.01); H04L 2209/16 (2013.01);
Abstract
The invention provides a receiver, a smartcard and a conditional access system for securely obtaining a control word using an entitlement transform tree, wherein intermediate results are cached to improve computational efficiency.