Method and apparatus for controlling dual conversion gain signal in imaging devices
US8077237B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 16, 2007 |
| Grant date | Dec 13, 2011 |
| Priority date | — |
| Expiry date | May 6, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/771
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A image-sensing device includes an array of light-sensing pixels arranged in rows, a readout circuit, and a control logic coupled to the rows of pixels. Each of the pixels has a respective conversion gain that changes to a respective second value from a respective first value within a settling time when a control signal is applied to the pixel. The readout circuit is coupled to the array of pixels and samples the rows of pixels once in an array sampling process. The control logic applies the control signal to the pixels of at least one row after sampling of the pixels in at least one other row of the array has begun but at least the settling time before the at least one row is sampled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.