Patent · US Active

Water robustness and detection on capacitive buttons

US10146371B2 · kind B2 · utility

1Cited by

0References

22Claims

0Family size

Assignee

MICROCHIP TECHNOLOGY INCORPORATED · US

Inventors

Axel Heim · Munich, DE
Joao Ferreira · Porto Alegre, BR

Key dates

Filing date	Mar 28, 2017
Grant date	Dec 4, 2018
Priority date	—
Expiry date	Mar 28, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG06F2203/04108
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method for touch detection includes identifying a high-pass filtered sequence from a plurality of sensor measurements, accumulating a number of samples from a first high-pass filtered sequence into an accumulated value, comparing the first accumulated value against a threshold of accumulated values, and, based upon a determination whether the accumulated value is greater than the threshold of accumulated values, identify whether the sensor has been approached.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.