Coin validator calibration
US6311820A · kind A · utility
7Cited by
26References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 1999 |
| Grant date | Nov 6, 2001 |
| Priority date | — |
| Expiry date | May 10, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07D2205/0012
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The coin validator is calibrated by inserting a calibration key different from coins to be validated in a static position in the validator such that eddy currents are induced in the key by operation of its sensor coils so as to produce a calibration value of signals form the sensor coils as a function of the individual characteristics of the validator. The calibrating value of the sensor signals may be compared with ensemble data concerning corresponding calibration values derived from an ensemble of coin validators of the same design.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.