Method and apparatus for detecting the presence of artificial illumination in a scene
US7009642B2 · kind B2 · utility
5Cited by
7References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2001 |
| Grant date | Mar 7, 2006 |
| Priority date | — |
| Expiry date | Oct 8, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/70
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for detecting the presence of artificial illumination in a scene powered by alternating current by sampling the light in a scene at a periodic rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.