Apparatus and process for checking the authenticity of an article having a magnetic storage information means
US4908516A · kind A · utility
Inventor
Key dates
| Filing date | Jan 22, 1988 |
| Grant date | Mar 13, 1990 |
| Priority date | — |
| Expiry date | Jan 22, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F7/086
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Apparatus (2) for characterizing or identifying an article (10) having a magnetic material thereon which stores information relating to the article, the apparatus comprising means (24) for irradiating the article with electromagnetic radiation of a particular spectral characteristic, means (26,28,30) for detecting electromagnetic radiation which is emitted by or reflected from the article due to the irradiation thereof by the means for irradiating, means for determining whether or not the detected radiation has prescribed spectral characteristics thereby to detect whether or not the article is genuine, and a magnetic detector means for reading information which is stored on the magnetic material, the means for detecting being arranged to control the magnetic detector means in response to the detection or whether or not the article is genuine. The invention also provides a method for characterizing or identifying an article having a magnetic material thereon which stores information relating to the article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.