Day and night detection based on one or more of illuminant detection, Lux level detection, and tiling
US9838602B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2017 |
| Grant date | Dec 5, 2017 |
| Priority date | — |
| Expiry date | Jan 12, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/134
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for controlling a camera mode is executed at a camera including a controller, a sensor array, an IR filter, and a lens assembly. The camera is operated in a night mode. While in the night mode the IR filter is not interposed between the lens assembly and the sensor array, the camera receives at the sensor array ambient light that is not filtered by the IR filter, determines whether the received ambient light is due to a light source other than an IR light source, and detects a light level of the received ambient light. The camera switches the operation of the camera from the night mode to a day mode when it is determined the received ambient light is due to a light source other than an IR light source and that the light level of the received ambient light exceeds a first threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.