Scan method and topology for capacitive sensing
US7375535B1 · kind B1 · utility
66Cited by
22References
16Claims
0Family size
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Key dates
| Filing date | Sep 19, 2005 |
| Grant date | May 20, 2008 |
| Priority date | — |
| Expiry date | Sep 19, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A capacitive sensing system (100) can connect groups of capacitive sensors (112-1 to 112-N) to a common node (106) to detect change in capacitance. States of a set of capacitive sensors (112-1 to 112-N) can thus be scanned faster than approaches that scan such sensors one-by-one. Faster scanning can allow for reduced power consumption in applications that only periodically scan the set of capacitive sensors (112-1 to 112-N).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.