Wide dynamic range operations for imaging
US7446812B2 · kind B2 · utility
45Cited by
12References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2004 |
| Grant date | Nov 4, 2008 |
| Priority date | — |
| Expiry date | Apr 2, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Embodiments provide a method and apparatus that achieve wide dynamic range operation of an image sensor. In an array of pixel cells, first charge is accumulated in a first subset of pixel cells during a first integration period and second charge is accumulated in a second subset of pixel cells during a second integration period. A length of the first integration period is different than a length of the second integration period, and the first and second charge are accumulated during a same frame and are read out.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.