Reducing noise in image sensors by concurrently reading reset and image signal levels from active and reference pixels
US8643750B2 · kind B2 · utility
6Cited by
0References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2010 |
| Grant date | Feb 4, 2014 |
| Priority date | — |
| Expiry date | Jan 8, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of one aspect includes reading a reset level of an active pixel, and concurrently, reading a reset level of a reference pixel. The method also includes reading an image signal level of the active pixel, and concurrently, reading an image signal level of the reference pixel. A reduced noise image signal level of the active pixel is generated based on the reset levels and the image signal levels of the active and reference pixels. Other methods are disclosed as well as apparatus and systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.