Method and device for reading electrical charges produced by a photo-detector, and detector comprising such devices
US8283618B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 28, 2009 |
| Grant date | Oct 9, 2012 |
| Priority date | — |
| Expiry date | Feb 6, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/771
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of reading electrical charges produced by a photo-detector of a photo-detector matrix includes collecting and storing electrical charges produced by the photo-detector in a first capacitive element, transferring the charges stored in the first capacitive element to a second capacitive element, and reading the voltage at the terminals of the second capacitive element. The transfer followed by the reading is carried out in at least two phases: at least one first phase taking place during the collection and storage of the charges in the first capacitive element, and a second phase taking place at the end of the collection and storage of the electrical charges in the first capacitive element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.