Method of capacitive measurement by non-regular electrodes, and apparatus implementing such a method
US9360512B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 8, 2013 |
| Grant date | Jun 7, 2016 |
| Priority date | — |
| Expiry date | Mar 8, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04108
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for providing corrected measurements of absolute capacitance of an object in the proximity of at least two independent electrodes of a non-optimized shape integrated in a human-machine interface device for detecting the object. The method includes measuring, for each electrode, an actual value of absolute capacitance between the electrode and the object, and calculating a prediction by applying a multi-variable nonlinear prediction model to the actual values of absolute capacitance so as to obtain an image of probability densities. Then, using the probability densities as corrected absolute capacitance values for detecting the object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.