Automatic exposure control system and method
US6836288B1 · kind B1 · utility
69Cited by
7References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 9, 1999 |
| Grant date | Dec 28, 2004 |
| Priority date | — |
| Expiry date | Feb 9, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/555
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for adjusting the exposure of a video camera characterized in one embodiment by a desired effective exposure which is determined responsive to measurement of a brightness parameter, a gain to be applied to amplification of an image which is derived from the desired effective exposure and the integration time period applicable to capture of the image, and an integration time period to be applied to image capture of an image which is derived from the desired effective exposure and a nominal gain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.