CMOS imaging system with low fixed pattern noise
US7046284B2 · kind B2 · utility
21Cited by
27References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2004 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | Feb 11, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A CMOS imager system including an active pixel sensor having an access supply which provides distributed feedback, a column buffer (having gain and FPN suppression), and an A/D converter co-located with the sensor such that the effective transmission path between the column buffer (or optional analog PGA) and the A/D converter acts as a resistor, rather than a reactance. The system may further include both an analog gain amplifier stage and a digital programmable amplifier stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.