Method of correcting the gain of a capacitive member, and a device for implementing the method
US9000779B2 · kind B2 · utility
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6References
12Claims
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Key dates
| Filing date | Dec 19, 2008 |
| Grant date | Apr 7, 2015 |
| Priority date | — |
| Expiry date | Dec 30, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C25/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of correcting the gain of a capacitive member having electrodes that are movable relative to each other including the steps of successively applying to one of the electrodes, reduced bias voltages having opposite signs and a common value below a threshold for which a remanent field generated by said reduced bias voltages can be measured, making corresponding measurements of the output signals from the capacitive member; taking an average, and correcting the gain of the capacitive member as a function of the measured output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.