Exposure control for image sensors
US9293500B2 · kind B2 · utility
23Cited by
81References
39Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2013 |
| Grant date | Mar 22, 2016 |
| Priority date | — |
| Expiry date | Mar 18, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/771
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of operating an image sensor. Charge accumulated in a photodiode during a first sub-exposure may be selectively stored in a storage node responsive to a first control signal. Charge accumulated in the photodiode during a first reset period may be selectively discarded responsive to a second control signal. Charge accumulated in the photodiode during a second sub-exposure may be selectively stored responsive to the first control signal. Charge stored in the storage node from the first and second sub-exposures may be transferred to a floating diffusion node responsive to a third control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.