Document monitoring method
US6970235B2 · kind B2 · utility
19Cited by
7References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 23, 2001 |
| Grant date | Nov 29, 2005 |
| Priority date | — |
| Expiry date | Jan 30, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07D7/20
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method of inspecting documents of value, the method comprises: a) obtaining images of one or more parts of the document from radiation received from that part or those parts of the document (14) in respective different wavelength bands; b) performing an analysis of one of said images to identify a first type of class within which the document of value is included; and c) performing an analysis of another of said images using corresponding predetermined data relating to members of the first type of class identified in step b) so as to determine a second type of class within which the document of value is included.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.