Universal electronic payment terminal base including memory card programming voltage booster
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United States of America Patent
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Apr 24, 1990
Grant Date -
N/A
app pub date -
Mar 1, 1988
filing date -
Mar 2, 1987
priority date (Note) -
Expired
status (Latency Note)
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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).
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