Image scanner using low-pixel-density CCD to achieve high-pixel-density scanning quality by pixel-level shift of CCD
USRE43087E1 · kind E1 · reissue
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2006 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | Mar 16, 2026 |
Classification
- Technology area (CPC —)General
Abstract
An image scanner performing multiple scanning operations for a single scan line is disclosed. The additional scanning operations are performed between two adjacent pixels. For a double scanning mode, the CCD performs one scanning operation for a scan line at a first position. Then, the CCD is moved from the first position to a second position along the X-direction to perform the other scanning operation at the second position. The distance between the first and the second positions is a half of the distance between two adjacent pixels. The scanning data of the two scanning operations are alternatively arranged and converted into final image data. By this way, a low-pixel-density CCD can be used to obtain a high-pixel-density scanning quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.