Image reader
US7072075B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2003 |
| Grant date | Jul 4, 2006 |
| Priority date | — |
| Expiry date | Aug 14, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/486
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image reader reads an image on a sheet document while feeding the sheet document by an automatic document feeder (ADF). A CCD sensor includes first pixel rows and a second pixel row. The first pixel rows read R, G, B color components of a document image while scanning the document in a main scanning direction. The second pixel row is disposed at a predetermined distance in a sub-scanning direction from the first pixel rows. The second pixel row reads one color component of the document image. The image reader uses the CCD sensor to detect noise component on image data read by the first pixel rows or the second pixel row based on each of image data read by the first and second pixel rows and to eliminate the detected noise component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.