Method of examining a coin for determining its validity and denomination
US8695416B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 22, 2007 |
| Grant date | Apr 15, 2014 |
| Priority date | — |
| Expiry date | May 26, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07D5/02
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method of examining a coin for determining the validity of its denomination, comprises the steps of moving a coin through a passageway, sensing said moving coin in said passageway with one or more sensors to interact with said moving coin and provide at least two values indicative of the said coin, calculating two or more coin features by using said at least two values, determining that said coin features values lie between predetermined minimum and maximum stored values, applying predetermined coefficients of weighted-error to each of said coin features, calculating weighted-error correlation coefficients using two or more of the said coin feature values, and determining validity when the said calculated weighted-error correlation coefficient is above predetermined minimum stored values, or when said coefficient is the maximum of all calculated coefficients.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.