Apparatus with both touch sensing and electrical field sensing functions and interactive apparatus using the same
US9454276B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2015 |
| Grant date | Sep 27, 2016 |
| Priority date | — |
| Expiry date | Apr 5, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0441
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus with both touch sensing and electrical field sensing functions and an interactive apparatus using the same are provided. The apparatus with both touch sensing and electrical field sensing functions comprises a control circuit, a first capacitive sensing electrode and a second capacitive sensing electrode. The first capacitive sensing electrode is coupled to a first sensing control terminal of the control circuit. The second capacitive sensing electrode is coupled to a second sensing control terminal of the control circuit. In a first period, the first capacitive sensing electrode is charged to a first voltage through the first sensing control terminal, and the second sensing control terminal supplies an electrical field pulse to the second capacitive sensing electrode such that the second capacitive sensing electrode outputs an electrical field pulse signal. In the first period, the control circuit determines whether the first capacitive sensing electrode is touched or not according to a period, during which a voltage of the first capacitive sensing electrode is discharged from the first voltage to a second voltage, and determines whether the second capacitive sensing …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.