Synchronized ambient light sensor and display
US9024530B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2013 |
| Grant date | May 5, 2015 |
| Priority date | — |
| Expiry date | Mar 9, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/144
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electronic device may be provided that has a display. The display may produce light using a backlight unit or using an array of light-emitting display pixels. An ambient light sensor may be mounted under an active area of the display to measure ambient light that is transmitted through the display. The display may be periodically disabled to prevent the display from producing light that interferes with the ambient light sensor. Display pixels may be coupled to a common cathode switch that can be periodically opened or the backlight in a display with a backlight can be periodically turned off. Control circuitry for periodically disabling the display while enabling the ambient light sensor may be implemented using a display driver integrated circuit mounted to a display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.