Electrical transmission or interconnection systems – Switching systems – Condition responsive
Patent
1996-01-31
1998-08-18
Shoop, Jr., William M.
Electrical transmission or interconnection systems
Switching systems
Condition responsive
361181, 307125, 307139, H01H 3500
Patent
active
057961832
ABSTRACT:
A capacitive responsive electronic switching circuit comprises an oscillator providing a periodic output signal having a frequency of 50 kHz or greater, an input touch terminal defining an area for an operator provide an input by proximity and touch, and a detector circuit coupled to the oscillator for receiving the periodic output signal from the oscillator, and coupled to the input touch terminal. The detector circuit being responsive to signals from the oscillator and the presence of an operator's body capacitance to ground coupled to the touch terminal when in proximity or touched by an operator to provide a control output signal. Preferably, the oscillator provides a periodic output signal having a frequency of 800 kHz or greater. An array of touch terminals may be provided in close proximity due to the reduction in crosstalk that may result from contaminants by utilizing an oscillator outputting a signal having a frequency of 50 kHz or greater.
REFERENCES:
patent: 3549909 (1970-12-01), Adelson et al.
patent: 3641410 (1972-02-01), Vogelsberg
patent: 3651391 (1972-03-01), Vogelsberg
patent: 3666988 (1972-05-01), Bellis
patent: 3798370 (1974-03-01), Hurst
patent: 3879618 (1975-04-01), Larson
patent: 3899713 (1975-08-01), Barkan et al.
patent: 3911215 (1975-10-01), Hurst et al.
patent: 3919596 (1975-11-01), Bellis
patent: 3965465 (1976-06-01), Alexander
patent: 3984757 (1976-10-01), Gott et al.
patent: 4016453 (1977-04-01), Moennig
patent: 4031408 (1977-06-01), Holz
patent: 4071689 (1978-01-01), Talmage et al.
patent: 4101805 (1978-07-01), Stone
patent: 4119864 (1978-10-01), Petrizio
patent: 4152629 (1979-05-01), Raupp
patent: 4159473 (1979-06-01), Senk
patent: 4210822 (1980-07-01), Wern
patent: 4211959 (1980-07-01), Deavenport et al.
patent: 4213061 (1980-07-01), Conner
patent: 4220815 (1980-09-01), Gibson et al.
patent: 4237421 (1980-12-01), Waldron
patent: 4246533 (1981-01-01), Chiang
patent: 4257117 (1981-03-01), Besson
patent: 4264831 (1981-04-01), Wern
patent: 4289972 (1981-09-01), Wern
patent: 4289980 (1981-09-01), McLaughlin
patent: 4308443 (1981-12-01), Tucker et al.
patent: 4323829 (1982-04-01), Witney et al.
patent: 4352141 (1982-09-01), Kent
patent: 4360737 (1982-11-01), Leopold
patent: 4374381 (1983-02-01), Ng et al.
patent: 4476463 (1984-10-01), Ng et al.
patent: 4503294 (1985-03-01), Matsumaru
patent: 4731548 (1988-03-01), Ingraham
patent: 4758735 (1988-07-01), Ingraham
patent: 4831279 (1989-05-01), Ingraham
patent: 4910504 (1990-03-01), Eriksson
patent: 4939382 (1990-07-01), Gruodis
patent: 4942631 (1990-07-01), Rosa
patent: 5012124 (1991-04-01), Hollaway
patent: 5066898 (1991-11-01), Miller et al.
patent: 5087825 (1992-02-01), Ingraham
patent: 5208516 (1993-05-01), Saidian
patent: 5233231 (1993-08-01), Wieth et al.
patent: 5235217 (1993-08-01), Kirton
patent: 5386219 (1995-01-01), Greanias et al.
patent: 5453644 (1995-09-01), Yap et al.
patent: 5572205 (1996-11-01), Caldwell et al.
Kaplan Jonathan
Nartron Corporation
Shoop Jr. William M.
LandOfFree
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