A CIRCUIT AND METHOD TO CAPACITIVELY DETERMINE TOUCH OR PROXIMITY POSITION IN ONE OR TWO DIMENSIONS

A CIRCUIT AND METHOD TO CAPACITIVELY DETERMINE TOUCH OR PROXIMITY POSITION IN ONE OR TWO DIMENSIONS

A capacitive sensing circuit which has a uniformly resistive sense plate, a charge transfer measurement circuit connected to one side of the sense plate and a dummy load which is only connected to another side of the sense plate during some measurement cycles.

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Bibliographische Detailangaben
Hauptverfasser: BRUWER, FREDERICK, JOHANNES, PRETORIUS, PIETER, JACOBUS, SWANEPOEL, NICO, JOHANN, FOURIE, RIAAN
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Beschreibung
Zusammenfassung:A capacitive sensing circuit which has a uniformly resistive sense plate, a charge transfer measurement circuit connected to one side of the sense plate and a dummy load which is only connected to another side of the sense plate during some measurement cycles.