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Control system with capacitive detector

  • US 6,731,209 B2
  • Filed: 01/30/2002
  • Issued: 05/04/2004
  • Est. Priority Date: 02/07/2001
  • Status: Expired due to Fees
First Claim
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1. A capacitive sensor system for controlling operation of a device, the system comprising:

  • sense electrodes for enabling establishment of an electric field for intercepting motion of a proximate object; and

    an electronic circuit for providing a control output signal in response to a rate of change in capacitance of the sense electrodes due to motion of the proximate object within the field without intermediate electronic differentiation of signals related to a change in capacitance.

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