Image sensor control method
US8218045B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 25, 2008 |
| Grant date | Jul 10, 2012 |
| Priority date | — |
| Expiry date | Dec 5, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/77
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for acquiring images using at least one CMOS-type sensor with four transistors including an acquisition node and a read node, where the read node can receive a compression signal, including a step of reading a reference state of the sensor; a reset step; an integration step, during which the sensor is exposed and during part of which the compression signal is applied to the read node; and a step of reading the data acquired during the integration step; the read node being, during the integration step, isolated from the acquisition node, except immediately before the application of the compression signal, at which time the acquisition node is connected to the read node long enough to enable a transfer of the charges present at the acquisition node to the read node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.