Active pixel sensor (APS) readout structure with amplification
US7557844B2 · kind B2 · utility
2Cited by
6References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 28, 2004 |
| Grant date | Jul 7, 2009 |
| Priority date | — |
| Expiry date | Jul 13, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/77
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An active pixel sensor (APS) includes an array of individually addressable APS cells ad a pixel readout structure that includes an amplifier. The amplifier may have a two-branched structure and provide a gain of one or higher. Additional switches may be provided in the pixels to provide protection for pixel output transistors from voltage changes in the column line. Structure may also be provided for optional gain selection in the amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.