Auto exposure control system and method
US9871972B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 21, 2016 |
| Grant date | Jan 16, 2018 |
| Priority date | — |
| Expiry date | Jul 14, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/76
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An auto exposure control system includes a mean statistics unit that generates a weighted mean brightness value for an image array; a target control unit that determines a target brightness value according to an ambient status that is determined in accordance with an ambient light value, wherein, in one embodiment, the weighted mean brightness value is used as the ambient light value; a stabilization unit that generates stabilization control signals for the target control unit according to the ambient light value and ambient status information provided by the target control unit; and an exposure value control unit that computes a desired exposure value by comparing the target brightness value with the weighted mean brightness value and determines an exposure command according to the desired exposure value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.