Method and circuit for obtaining a sample in an image sensor
US7667181B2 · kind B2 · utility
2Cited by
1References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 1, 2008 |
| Grant date | Feb 23, 2010 |
| Priority date | — |
| Expiry date | Apr 1, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/627
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image sensor and a method for acquiring images by sampling of the level of a voltage representative of the charge of a photodiode, in which a first sample is taken during a reset of the charge level of the photodiode; and a second sample is taken provided that the decrease slope of the voltage after the reset is lower than a threshold, said second sample replacing the first one.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.