Electronic device and ambient light sensing method thereof
US11087677B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2020 |
| Grant date | Aug 10, 2021 |
| Priority date | — |
| Expiry date | Sep 3, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/144
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electronic device includes: a OLED display including a first display area, wherein a saturation of the first display area remains constant in a first period; a display driver for driving the OLED display and changing a brightness coefficient of the first display area from a first brightness coefficient to a second brightness coefficient during the first period; an ambient light sensor under the first display area for sensing light, wherein during the first period, the ambient light sensor generates a first sensing value when the brightness coefficient of the first display area is the first brightness coefficient and generates a second sensing value when the brightness coefficient of the first display area is the second brightness coefficient; and a controller for calculating an ambient light intensity according to the first brightness coefficient, the second brightness coefficient, the first sensing value and the second sensing value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.