Electronic method and circuit for analyzing analog signals

Details Electronic method and circuit for analyzing analog signals Electronic method and circuit for analyzing analog signals

1991-01-08

1993-03-09

Bartuska, F. J.

Check-actuated control mechanisms

Including means to test validity of check

By testing material composition

G07D 508

Patent

active

051919567

ABSTRACT:
A method for analyzing analog signals for coin detection comprises establishing, in an analog signal different measurement areas TA, TB, TC, based upon the gradient changes of that signal, to determine a digital signal according to such changes. An electronic circuit is used, which includes an operational amplifier with a time delay that compares the analog signal with the same signal, insignificantly delayed with regard to the signal duration.

REFERENCES:
patent: 4705154 (1987-11-01), Masho et al.

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