Specific document discriminating apparatus and image reading apparatus using it therein
US5602939A · kind A · utility
9Cited by
9References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1994 |
| Grant date | Feb 11, 1997 |
| Priority date | — |
| Expiry date | Sep 26, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/482
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides an invisible light image detecting means for detecting an invisible light region image formed by using colorless paint in an invisible light region, and a discriminating means for discriminating a general document from a specific one by using the image data detected by said invisible light image detecting means, thus discrimination between a general document and a specific one being executed accurately and without fail.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.