Apparatus and method for obtaining average scene intensity information from a photo detector array
US7081922B2 · kind B2 · utility
5Cited by
6References
21Claims
0Family size
Inventor
Key dates
| Filing date | Dec 6, 2001 |
| Grant date | Jul 25, 2006 |
| Priority date | — |
| Expiry date | Mar 2, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/71
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical sensor array includes an array of pixel circuits. Each pixel circuit includes a photo detector and a voltage supply line. The voltage supply line from each pixel circuit is connected to a common node. A voltage supply input configured to be coupled to a voltage supply and to the common node supplies a voltage to each pixel circuit. A sensing circuit coupled to the common node senses signals from the common node and outputs at least one signal representative of an average intensity of light directed onto the array of pixel circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.