Method for driving a scanning system with a reference pattern
US5786590A · kind A · utility
10Cited by
1References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 3, 1997 |
| Grant date | Jul 28, 1998 |
| Priority date | — |
| Expiry date | Apr 3, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0422
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A document holder is fed into a cassette scanning system. A sensor that is set in the cassette scanning system detects whether the document holder is in the scanning system or not. The scanning system is responsive to the sensor to drive the image sensor to a predetermined position where is exactly over a reference pattern. The reference is formed in the document holder. Next, the image sensor starts to detect whether the document is in the document holder or not. The scanning system is responsive to the signal to drive the image sensor for capturing the image of the document.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.