Frequency selection with two frequency sets of multiple operating frequencies in a mutual capacitance sensing devices
US9209802B1 · kind B1 · utility
13Cited by
3References
19Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 27, 2012 |
| Grant date | Dec 8, 2015 |
| Priority date | — |
| Expiry date | Apr 12, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/960775
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Apparatuses and methods of frequency selection algorithms and frequency set selection are described. One method monitors a signal on the electrodes of a sense network, determine a first group of noise metrics of noise in the signal, determine a second group of noise metrics. The method switches from a first operating frequency in a first set to a second operating frequency in the first frequency set based on the first group of noise metrics and switches from the first operating frequency in the first set to a third operating frequency in a second frequency set based on the second group of noise metrics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.