Scan method and topology for capacitive sensing

Details Scan method and topology for capacitive sensing Scan method and topology for capacitive sensing

2008-05-20

2008-05-20

Nguyen, Vincent Q. (Department: 2858)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

C324S679000

Reexamination Certificate

active

07375535

ABSTRACT:
A capacitive sensing system (100) can connect groups of capacitive sensors (112-1to112-N) to a common node (106) to detect change in capacitance. States of a set of capacitive sensors (112-1to112-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 (112-1to112-N).

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