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Electrostatic device having spaced electrodes

  • US 9,874,966 B2
  • Filed: 04/28/2015
  • Issued: 01/23/2018
  • Est. Priority Date: 04/28/2015
  • Status: Active Grant
First Claim
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1. An electrostatic device comprising:

  • a member having a proximal end and a distal end at opposing ends of an axis;

    a first electrode positioned at the proximal end, the first electrode configured to electrostatically couple a principal signal to a sensor matrix of a computing device, such that an intensity of the principal signal that is sensed by the sensor matrix increases as the first electrode approaches the sensor matrix;

    a drive circuit configured to generate the principal signal, the principal signal being an active signal; and

    a second electrode positioned a spaced distance from the first electrode, the spaced distance configured to cause a designated capacitance between the first electrode and the second electrode to exceed a capacitance threshold and to cause the second electrode to electrostatically couple a secondary signal, which is based on the principal signal, to the sensor matrix as the first electrode is placed proximate the sensor matrix.

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