Quadrature calibration methods for sensor applications
US11899882B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Nov 19, 2021 |
| Grant date | Feb 13, 2024 |
| Priority date | — |
| Expiry date | Nov 19, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04107
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Apparatuses and methods of quadrature modulation and compensation are described. One touch controller includes a receiver sensing channel to measure a sense signal and generate at least four samples per one period of the sense signal. The touch controller includes quadrature demodulation logic to determine phase information of the sense signal using the at least four samples per one period of the sense signal and processing logic to execute a compensation algorithm to compensate for a phase mismatch of the touch controller based on the phase information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.