Touch input sensing apparatus for housing of electric device
US11675464B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2020 |
| Grant date | Jun 13, 2023 |
| Priority date | — |
| Expiry date | May 15, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/96038
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch input sensing device configured to be added to an electronic device, the electronic device including a touch input unit, the touch input unit including a first touch member integrated with a housing. The touch input sensing device includes a resonant circuit configured to generate a resonance signal having a resonant frequency that varies based on a touch of the touch input unit, a digital frequency counter configured to count a reference frequency signal based on the resonance signal, or count the resonance signal based on the reference frequency signal, to generate a count value, and a touch detector configured to detect whether the touch of the touch input unit has occurred based on the count value generated by the digital frequency counter, and output a touch detection signal indicating whether the touch has occurred.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.