Procedure for reducing processing time for image elements by combining charge of adjacent pixels into a new composite pixel
US5461491A · kind A · utility
13Cited by
7References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 29, 1993 |
| Grant date | Oct 24, 1995 |
| Priority date | — |
| Expiry date | Dec 29, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/193
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention improves the scanning speed (i.e., the line exposure time) of an image scanner that is operated at a lower than normal resolution. The image scanner contains a charge coupled device (CCD) that stores a plurality of pixel charges. Before digitizing the pixel charges, the present invention combines two or more of these pixel charges. Thus, the effective resolution of the CCD can be divided by a designated amount, thus reducing processing time and keeping signal levels nearly constant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.