Touch screen having a filter for filtering interfering light signals
US9395846B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2011 |
| Grant date | Jul 19, 2016 |
| Priority date | — |
| Expiry date | Dec 14, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0428
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch screen and a multi-channel sampling method thereof are disclosed. The touch screen comprises infrared-emitting diodes, infrared-receiving diodes, a touch detection region, first-stage processing circuits, and a second-stage processing circuit. At least two infrared-receiving diodes receive infrared light emitted from the same infrared light-emitting diode simultaneously, and the at least two infrared-receiving diodes output the received signals to the second-stage processing circuit for processing after the first-stage processing circuits filter out interfering light signals. The touch screen and the multi-channel sampling method thereof according to the present invention can be used to increase the multi-channel sampling rate of the touch screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.