Multichannel capacitive sensor device
US11698697B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Mar 7, 2022 |
| Grant date | Jul 11, 2023 |
| Priority date | — |
| Expiry date | Mar 7, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/960765
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A capacitive sensor with a plurality of sense inputs connectable to capacitive sense electrodes and a common reference input, each sense input and the reference input can be put in a measure state, in a ground state, or in a shield state. The sensor can be equipped with external reference capacitors between each of the sense input and the common reference terminal. The reference capacitor can be read individually by selectively pulling one of the input terminals to ground and driving the other to be equipotential with the reference input.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.