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:
Apr. 08, 2008
Filed:
Oct. 19, 2000
Applicants:
David Jay Duffield, Indianapolis, IN (US);
Michael Scott Deiss, Zionsville, IN (US);
Inventors:
David Jay Duffield, Indianapolis, IN (US);
Michael Scott Deiss, Zionsville, IN (US);
Assignee:
Thomson Licensing, Boulogne Billancourt, FR;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for verifying that a source device is authorized to communicate otherwise protected content to a sink device in a conditional access system using identification codes.