Photo-sensitive element used in electro-optical sensors to detect and convert incident light into an electrical signal
US7378638B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Nov 15, 2005 |
| Grant date | May 27, 2008 |
| Priority date | — |
| Expiry date | Jan 5, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Photo-sensitive element for electro-optical sensors, including at least a photodiode able to generate a current that is function of the incident light, a conversion circuit able to convert the current generated into a voltage signal, a comparator able to commute if the voltage signal reaches or exceeds a determinate threshold signal, and at least a measuring and memorization element able to measure and memorize the temporal instant of commutation of the comparator and able to be driven by a reference signal in order to render available to an output line a signal estimating the incident light. The reference signal is of the type that can be programmed from outside.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.