×

Capacitive sensor

  • US 20050005703A1
  • Filed: 06/23/2004
  • Published: 01/13/2005
  • Est. Priority Date: 07/11/2003
  • Status: Abandoned Application
First Claim
Patent Images

1. A pressure-sensitive capacitive sensor comprising:

  • a sensing unit comprising a plurality of column wires and a plurality of row wires in a matrix, capacitances at intersections between the column wires and the row wires changing in accordance with externally applied pressure, the sensing unit detecting changes in the capacitances at the intersections and a distribution of the externally applied pressure based on the detecting result of the changes;

    a signal output unit for sequentially outputting pulse signals of a predetermined frequency to the column wires of the sensing unit; and

    a plurality of filters connected to the respective row wires of the sensing unit and extracting signals of the predetermined frequency from signals received from the respective row wires.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×