Device and method for quick and precise determination of scan start point for image scanner
US6229629A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 11, 1998 |
| Grant date | May 8, 2001 |
| Priority date | — |
| Expiry date | Sep 11, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04749
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for quick determination of a scan start point for an image scanner is disclosed. The image scanner includes a photo-processing device and a scanning platform for placing thereon a document to be scanned. The scanning platform is printed with a pattern mark which is located between a home position and a scan start point of the photo-processing device, and has a specified point being a predetermined first shift to the scan start point along a specific direction. According to the method, the photo-processing device moves a predetermined distance from the home position to a pre-scan position overlapping with the pattern mark, then moves a calculated distance from the pre-scan position to the specified point, and moves another predetermined distance from the specified point to the scan start point along the specific direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.