Bill discriminating apparatus
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United States of America Patent
Stats
-
Aug 7, 1990
Grant Date -
N/A
app pub date -
May 15, 1989
filing date -
May 20, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A bill discriminating apparatus having two color detectors for photoelectrically detecting light components contained in light transmitted through or reflected by bills to be discriminated and having different wavelengths from each other, the bill discriminating apparatus including a current correction circuit for correcting current output from one of the two color detectors, two amplifiers for amplifying the current output from one of the two color detectors and current output from the other color detector, a gain adjusting circuit capable of adjusting gain of one of the two amplifiers, a differential amplifier for differentially amplifying signals output from the two amplifiers and a discriminator for discriminating denominations and/or genuineness of the bills based upon signals output from the differential amplifier. The thus constituted bill discriminating apparatus makes it possible to discriminate denominations and/or genuineness of the bills without fail.
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