Method and apparatus for identifying documents
US7266231B2 · kind B2 · utility
6Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2002 |
| Grant date | Sep 4, 2007 |
| Priority date | — |
| Expiry date | Feb 6, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07D7/20
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method and apparatus for identifying a document (55). The method comprises exposing the document (55), such as a banknote, to infrared radiation; detecting infrared radiation reflected from a plurality of regions of the document (55) to generate at least one test pattern; determining if the or each test pattern satisfies a predetermined relationship with a predetermined pattern or patterns corresponding to a known document; and, if the predetermined relationship is satisfied, identifying the document (55) as being the same as the known document.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.