Optical sensing apparatus and method for detecting object near optical sensing apparatus
US9189081B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2013 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Jul 2, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0428
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical sensing apparatus includes M light emitting devices, N sensing devices, a control circuit and a processing circuit. M is a positive integer, and N is an integer greater than or equal to 3. The control circuit is arranged for controlling activation and deactivation of the M light emitting devices, and controlling each sensing device to detect a reflected signal reflected from an object when a corresponding light emitting device is activated in order to generate a sensing result corresponding to the sensing device. The N sensing devices generate N sensing results in response to the M light emitting devices. The processing circuit is arranged for calculating position information of the object according to at least the N sensing results and N sensing positions of the N sensing devices, wherein the N sensing positions define at least one geometric plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.