Discriminant verification systems and methods for use in coin discrimination
US8739955B1 · kind B1 · utility
7Cited by
21References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 11, 2013 |
| Grant date | Jun 3, 2014 |
| Priority date | — |
| Expiry date | Mar 11, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07D5/00
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Systems and associated methods for coin discrimination are disclosed herein. In one embodiment, a method for discriminating coins includes obtaining an electromagnetic sensor signal of a coin, sampling the sensor signal, generating a fingerprint of the coin from the sampled sensor signal, and calculating an appraisal using the fingerprint and a linear discriminant vector. The appraisal can be compared to a threshold to determine whether the coin is valued or impostor. In some embodiments, the linear discriminant vector can be calculated using the valued and impostor coin populations' covariance and means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.