Capacitance touch sensor
US8665224B2 · kind B2 · utility
1Cited by
15References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2008 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | Apr 12, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/96073
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A capacitance touch sensor includes a square wave generator for generating a square wave clock, a sensor panel for receiving the square wave clock and then generating a panel signal, a peak detector for receiving the panel signal and then generating an analog peak signal, an analog-to-digital converter for receiving the analog peak signal and then generating a digital peak signal, and a control unit for receiving the digital peak signal and generating a detection signal according to a level of the digital peak signal to indicate whether the sensor panel is touched or not.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.