Title of Invention

CONTROL SYSTEM WITH CAPACITIVE DETECTOR.

Abstract A capacitive sensor system for controlling operation of a device in response to a rate of change in capacitance due to motion of a proximate object includes at least two sense electrodes disposed on a surface and a phase locked loop, including a voltage controlled oscillator and a phase/frequency comparator, connected between the sense electrodes and an RC network for providing an operating frequency to the sense electrodes. A circuit loop, including a reference oscillator, provides a fixed frequency references for the phase locked loop to follow and a phase delay circuit connected between said phase/frequency comparator and said voltage controlled oscillator causes the voltage controlled oscillation to run ahead of the reference oscillator. A trigger circuit provides a control output in response to a change in phase shift frequency and said operating frequency.
Full Text

Documents:


Patent Number 216849
Indian Patent Application Number 00989/KOLNP/2003
PG Journal Number 12/2008
Publication Date 21-Mar-2008
Grant Date 19-Mar-2008
Date of Filing 01-Aug-2003
Name of Patentee GERENRAICH FAMILY TRUST
Applicant Address 4824 HAZELNUT AVENUE, SEAL BEACH CA 90740
Inventors:
# Inventor's Name Inventor's Address
1 WADLOW DAVID 44 SMITHFIELD COURT, BASKING RIDGE, NJ 07920
2 SCHOLTEN FRANK 57 BAKER ROAD, LIVINGSTON, NJ 07039
3 GIFFONE RALPH 1669 BROAD STREET, BLOOMFIELD, NJ 07003
4 GERENRAICH KENNETH B 4824 HAZELNUT AVENUE, SEAL BEACH CA 90740
PCT International Classification Number G 08 B 13/26
PCT International Application Number PCT/US02/02947
PCT International Filing date 2002-01-30
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 60/267,113 2001-02-07 U.S.A.