Keystroke detection device, keyboard, and keystroke detection method
US11811399B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 12, 2021 |
| Grant date | Nov 7, 2023 |
| Priority date | — |
| Expiry date | Feb 19, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2017/9706
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The invention relates to an apparatus for detecting a key press comprising a circuit substrate, a key module with a key cap and a movement mechanism, and a device for detecting the movement of the key cap, wherein the movement mechanism has at least one movement element wherein this device comprises an electrical resonance circuit with at least one capacitor and with a primary coil and comprises a secondary coil wherein the device for detecting the movement of the key cap comprises a measuring device for detecting and/or processing at least one physical variable of the electrical resonance circuit, which variable changes during the movement of the key cap, and outputs at least one electrical signal that is dependent on the change in the physical variable.The invention also relates to a keyboard comprising one or more such apparatuses and to a method for detecting a key press.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.