System and method for coin validation
US7806248B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2008 |
| Grant date | Oct 5, 2010 |
| Priority date | — |
| Expiry date | Jun 10, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07D5/00
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A system for validating a coin has a passageway through which the coin passes, in use; an oscillator having a component positioned relative to the passageway for the frequency and amplitude of oscillation of the oscillator to be varied, in use, by passage of the coin along the passageway; a period (or frequency) determining unit for determining the period (or frequency) of an oscillating signal provided by the oscillator when influenced by the coin and for supplying a determined period (or frequency) value; an amplitude determining unit for determining the amplitude of the oscillating signal provided by the oscillator when influenced by the coin and for supplying a determined amplitude value; and an assessing unit for assessing if the determined period (or frequency) and amplitude values lie in a predetermined window of period (or frequency) and amplitude values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.