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. 10, 1993
Filed:
Dec. 19, 1990
Applicant:
Inventors:
Assignees:
Centre National d'Etudes des Telecommunications, both of, FR;
Telediffusion de France, both of, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ;
U.S. Cl.
CPC ...
358 84 ; 358 86 ; 455-62 ;
Abstract
A device for allowing fee paying subscribers access to television or radio programs includes a keyboard unit for requesting messages concerning the programs. Information describing the program fees and account status is contained in a subscriber held security processor such as a smart card. As a function of the content of the requests a mechanism converts the information contained in the security processor into intelligible messages as a function of complementary information transmitted regularly within television and/or radio signals.