Video input processor, imaging signal-processing circuit, and method of reducing noises in imaging signals
US8054346B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 17, 2008 |
| Grant date | Nov 8, 2011 |
| Priority date | — |
| Expiry date | Sep 8, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/68
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video input processor is disclosed. The processor includes: an imaging signal-generating portion configured to image a subject and producing first imaging signals containing visible light components and a second imaging signal containing near-infrared light components; a gain adjustment portion configured to adjustably set a maximum gain value according to a relative magnitude between the visible light components and the near-infrared light components and adjust a gain for the first imaging signals at the set maximum gain value; and a noise reduction portion configured to reduce noises in the first imaging signals after the gain has been adjusted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.