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. 24, 1990
Filed:
Mar. 01, 1988
Jacques Marty, Bourg les Valence, FR;
Jerome Tremblet, Bourg les Valence, FR;
Jean-Jacques Delorme, Valence, FR;
Crouzet, Paris, FR;
Abstract
A universal electronic payment terminal base comprising an application and transaction microprocessor (4), with its power supply source (8) and being capable of receiving information identifying memory card holders, and a reader (6) of these cards controlled by the microprocessor (4). The source (8) also serves for programming the cards and delivers a voltage at most equal to the smallest of the programming voltages required. Between the low weight source (8) and the reader (6) a voltage booster (51) is provided for boosting the voltage to a constant level higher than the largest of the programming voltages, and a step by step voltage dropper (53) controlled by a variable cyclic ratio pulse generator (36).