Patent ID: 11863173
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Basic communication processes (Electrical engineering)
Classification: CPC H  F  G | IPC G  H

Claim 8:
9. A device comprising:
a capacitive sensing circuit having a port coupled to a first switch and a second switch, the capacitive sensing circuit further comprising a control circuit coupled to the first switch and the second switch, and to a transfer capacitor;
a conductor coupled to the port of the capacitive sensing circuit;
a first electrode coupled to the conductor;
a housing having a first surface and a second surface, the second surface disposed inside a first volume defined by the first surface, the second surface defining a second volume, wherein the first electrode is coupled to the housing; and
a second electrode disposed on the second surface and within the second volume of the housing, wherein the second electrode is capacitively coupled to the first electrode.