Method for controlling optical sensing circuit, optical sensing circuit, and imaging device
US11290653B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2021 |
| Grant date | Mar 29, 2022 |
| Priority date | — |
| Expiry date | Sep 9, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B47/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This application discloses a method for controlling an optical sensing circuit, an optical sensing circuit, and an imaging device. The optical sensing circuit includes an optical sensor and a voltage dividing circuit connected in series, an input voltage (a voltage of the voltage dividing circuit) and an output voltage are obtained, a resistance value of the optical sensor is calculated according to the input voltage, a light intensity value is obtained according to the resistance value of the optical sensor, and then, different loads are controlled based on a level of the output voltage for light intensity in different ranges to perform corresponding operations. This application has high flexibility and strong adaptability, and can effectively broaden an application scope of a photosensitive device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.