Exposure control system and method for an image sensor
US7335868B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2005 |
| Grant date | Feb 26, 2008 |
| Priority date | — |
| Expiry date | Apr 21, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/74
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An exposure control system and method for an image sensor, which includes an image sensor, an illuminator, a controller and a light separator. The image sensor has plural photosensitive pixels in a two-dimensional matrix arrangement. When an exposure is operated in a sub-region of the plural photosensitive pixels, the illuminator produces a flashlight as a light source for exposure. The light separator eliminates light except the flashlight. The controller sequentially activates each row of pixels in the sub-region, and when each row of pixels is in an exposure state, the controller drives the illuminator to produce the flashlight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.