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Capacitively coupled multiple axis data input apparatus and method

  • US 5,786,997 A
  • Filed: 06/18/1996
  • Issued: 07/28/1998
  • Est. Priority Date: 06/20/1995
  • Status: Expired due to Fees
First Claim
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1. A multiple axis data input apparatus, comprising:

  • a signal source generating an electrical signal;

    an electrode assembly having multiple electrodes that are sequentially coupled to the electrical signal;

    a sensor electrode having multiple faces, each face in proximity to an associated electrode of the electrode assembly;

    a positioning means for orienting the sensor electrode in at least four predetermined axes relative to the electrode assembly such that each face receives an amount of the electrical signal that depends on an orientation-induced spacing between each face and its associated electrode and in which each face provides a signal amplitude in response to the amount of the electrical signal received; and

    a controller that receives and processes the signal amplitudes and generates spacing data related to the orientation-induced spacing between each face and its associated electrode.

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