Integrated ambient light sensor and distance sensor
US8705015B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2012 |
| Grant date | Apr 22, 2014 |
| Priority date | — |
| Expiry date | Feb 27, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/94108
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An integrated proximity and light sensor includes a first light-emitting device, a second light-emitting device, and a light sensing circuit configured as a single package. The light sensing circuit is configured to control the first light-emitting device and the second light-emitting device to emit light therefrom. Further, the light sensing circuit is configured to detect an ambient light level and to detect a reflection of the light emitted by the first light-emitting device from a surface for proximity detection. The light sensing circuit is also configured to control the second light-emitting device to stop emitting light therefrom for one or more of the ambient light level detection and the proximity detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.