Apparatus and method for conserving power in an electronic coin

Details Apparatus and method for conserving power in an electronic coin Apparatus and method for conserving power in an electronic coin

1989-12-26

1991-07-02

Bartuska, F. J.

Check-actuated control mechanisms

Including means to test validity of check

By testing material composition

379146, G07D 508

Patent

active

050279351

ABSTRACT:
An electronic coin chute (ECC) for use in a public telephone station has only a small amount of electrical power available from the telephone line when examining coins for authenticity and denomination. To conserve power during the examination process, a plurality of coin quality sensors are used, each designed to use minimum power. Each sensor generates an oscillating magnetic field that interacts with the coin as it gravitates through the coin chute. By monitoring the output electrical signal from each coin quality sensor, the microprocessor is able to determine when the coin has moved beyond its field and, in response, power is removed from that sensor and applied to the next. After the coin's qualities have been measured, they are compared with stored acceptance limits. Power is removed from the last coin quality sensor and applied to a coin routing apparatus to guide accepable coins into a collection box.

REFERENCES:
patent: 3870137 (1975-03-01), Fougere
patent: 4279020 (1981-07-01), Christian et al.
patent: 4361731 (1982-11-01), Smoot
patent: 4488006 (1984-12-01), Essig et al.
patent: 4612418 (1986-09-01), Takeda et al.
patent: 4848556 (1989-07-01), Shah et al.
Application Ser. No. 368,619 filed 6/20/89.

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