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. 11, 2003
Filed:
Oct. 13, 1998
Applicant:
Inventors:
Arnaldo Campinos, Paris, FR;
Dominique Guillet, Rennes, FR;
Assignee:
Thomson Licensing S.A., Boulogne Cedex, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/00 ; H04N 7/167 ;
U.S. Cl.
CPC ...
H04L 9/00 ; H04N 7/167 ;
Abstract
The present invention relates to a process making it possible to control access to at least one terminal with address AD by at least one scrambled item with the aid of at least one control word. The process comprises a step making it possible to construct a descrambling item in the form of a message containing the control word, a datum making it possible to identify the scrambled item and the address of the terminal.