Method and apparatus for improved coin, bill and other currency acceptance and slug or counterfeit rejection
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United States of America Patent
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-
Dec 1, 1992
Grant Date -
N/A
app pub date -
Oct 10, 1990
filing date -
Oct 10, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Methods and validation apparatus for achieving improved acceptance and rejection for coins, bills and other currency items. One aspect includes modifying item acceptance criteria by creating and defining three-dimensional acceptance clusters, the data for which are stored in look-up tables in memory associated with a micorprocessor. A second aspect involves fraud prevention by temporarily tightening or readjusting item acceptance criteria when a potential fraud attempt is detected. A third aspect relates to minimizing the effects of couterfeit items such as slugs on the self-adjustment process for the item acceptance criteria. A final aspect relates to calculation of a relative value of the acceptance criteria in order to conserve memory space and minimize computation time.
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