Swipe linear image sensor with analog and digital summation and corresponding method
US8736925B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 2011 |
| Grant date | May 27, 2014 |
| Priority date | — |
| Expiry date | May 14, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/713
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to scanning linear image sensors with signal integration, in which an image of a line of points from an observed scene is reconstructed by the addition of successive images taken by a plurality of photosensitive lines which successively observe the same line of the scene as the scene moves across the sensor perpendicularly to the lines. The sensor according to the invention uses charge transfer pixels (Pm,i,j) grouped into M groups of N lines; an analog charge summation is carried out in each group; and the results of this summation are read by read circuits (READm) associated with each group, and then digitized and added to those of the other groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.