Methods and apparatus for obtaining nonlinear responses from photodetector arrays
US5283426A · kind A · utility
6Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 17, 1993 |
| Grant date | Feb 1, 1994 |
| Priority date | — |
| Expiry date | May 17, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/77
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A charge collection control circuit generates a time-varying voltage that is used to control the charge collection process in an MOS photodetector for the purpose of obtaining greater dynamic range. Control is exercised either by means of an integration control electrode that controls the flow of charge from a charge-collecting region to a sink or by means of a transfer electrode that controls the flow of charge from the charge-collecting region to a charge-transport region through which the collected charge flows to an output circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.