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. 27, 1984
Filed:
Nov. 10, 1982
Applicant:
Inventors:
Jean-Claude Basset, Paris, FR;
Guy Belenfant, Paris, FR;
Assignee:
Electronique Marcel Dassault, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
235382 ; 235380 ; 235381 ; 2353825 ;
Abstract
An access trial control device for a card, such as a financial or business transaction card or the like, which is inserted in an access terminal for use and carries a confidential code which is compared with an access code type by the user on the terminal. For each access trial the result, acceptance or refusal, of the comparison is permanently recorded by non volatile memory means in the card. The number of consecutive access trials refused is counted in a counter and is detected by a control circuit which disables the card when such number reaches a predetermined value. Each accepted access trial resets the counter to zero.