Method and apparatus for improved coin, bill and other currency acceptance and slug or counterfeit rejection
US5330041A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1992 |
| Grant date | Jul 19, 1994 |
| Priority date | — |
| Expiry date | Jun 15, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07D2205/0012
- WIPO fieldControl
- WIPO sectorInstruments
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 microprocessor. 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 counterfeit 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.