Apparatus and method of detecting a scanning range when applying assistant frames for flatbed scanners
US6295143A · kind A · utility
8Cited by
10References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1998 |
| Grant date | Sep 25, 2001 |
| Priority date | — |
| Expiry date | Feb 19, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0422
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention discloses an apparatus and a method for detecting the scanning range when applying the assistant frames in the flatbed scanners. Fixed marks allocated at the front side of the assistant frames are used to determine the sizes of the assistant frames. The required scanning ranges are thus determined according to the recognized assistant frames obtained from pre-scan. Only the front sides but whole of the assistant frames need to be pre-scanned, and thus to reduce the scanning time interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.