Self teaching coin discriminator

Details Self teaching coin discriminator Self teaching coin discriminator

1988-11-14

1991-11-26

Bartuska, F. J.

Check-actuated control mechanisms

With additional, disparate means preventing fraudulent...

Means preventing use of tethered check

194317, 194318, G07D 508

Patent

active

050676040

ABSTRACT:
By combining a number of different types of coin sensors including a reflective sensor, a capacitive sensor and inductive sensors together with a logic circuit it is possible to provide for highly accurate and flexible discrimination between authorized and unauthorized coins or tokens. Fexibility is further enhanced by a self teaching feature where a microprocessor is used to iteratively adjust upper and lower value limits in the sensor circuits in response to the insertion of a limited number of sample coins.

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