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. 20, 2010
Filed:
Sep. 29, 2004
Jean-bernard G. M. Beuque, Bois-Colombes, FR;
Jean-Bernard G. M. Beuque, Bois-Colombes, FR;
Thomson Licensing S.A., Boulogne-Billancourt, FR;
Abstract
A method of authentification of data sent in a digital transmission characterized by the organization and authentification of the data prior to transmission into a hierarchy of at least one root directory unit (), subdirectory unit () and file unit (), data in a file () being acted upon by an authentification algorithm and an associated file authentification value () stored in the referring subdirectory unit (), this file authentification value () being in turn acted upon by an authentification algorithm and an associated subdirectory authentification value () stored in the referring root directory. Other aspects of the invention relate to the authentification of a second root directory () by generation of a second authentification value () and the authentification of data before encapsulation in tables or sections of a transport stream.