Proximity or touch sensor
US9030214B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2012 |
| Grant date | May 12, 2015 |
| Priority date | — |
| Expiry date | May 12, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/044
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A sensor for sensing proximity or touch of an object includes a sensing region, an oscillating signal generator for generating an oscillating signal having an oscillation period, a gating signal generator for generating a gating signal having a gating duration, a controller for controlling the oscillation period or the gating duration and a processor for determining a number N of oscillation periods over the gating duration. The number N is indicative of the object's contact with, or proximity to, the sensing region. The sensor is calibrated by determining an optimal value for the oscillation period or gating duration such that an optimal number N over the gating duration is expected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.