Touch-sensitive control circuit

Details Touch-sensitive control circuit Touch-sensitive control circuit

1990-06-08

1992-10-06

Weldon, Ulysses

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

341 24, 307112, G09G 302

Patent

active

051535726

ABSTRACT:
A touch responsive user selection system including a plurality of touch pads on an insulated substrate and a logic circuit for responding to the change of impedance of any of the pads for setting or resetting a latch and thereby producing an output signal indicative of a user selection. A coincidence detector responds to the simultaneous change of impedance of two or more different touch pads by inhibiting the logic circuit from producing an output signal both during the coincidence and for a predetermined period of time after the coincidence has ceased. The logic circuit is made up of components that are arranged in a fashion that causes the circuit to respond to a ratio of signals that vary in proportion to supply voltage. In this manner, a touch-responsive system is provided that may be used with an unregulated power supply while functioning with extreme variations in supply voltage.

REFERENCES:
patent: 2737647 (1956-03-01), Oliwa
patent: 2782308 (1957-02-01), Rug
patent: 3040178 (1962-06-01), Lyman et al.
patent: 3200304 (1965-04-01), Atkins
patent: 3200305 (1965-08-01), Atkins
patent: 3200306 (1965-08-01), Atkins
patent: 3254313 (1966-05-01), Atkins
patent: 3275897 (1966-09-01), Atkins
patent: 3549909 (1970-12-01), Adelson
patent: 3624645 (1971-11-01), Gluck et al.
patent: 3641410 (1972-02-01), Vogelsberg
patent: 3651391 (1972-03-01), Vogelsberg
patent: 3666988 (1972-05-01), Bellis
patent: 3719767 (1973-03-01), Matumoto et al.
patent: 3796880 (1974-03-01), Dorey
patent: 3798370 (1974-03-01), Hurst
patent: 3839710 (1974-10-01), Rogers
patent: 3846791 (1974-11-01), Foster
patent: 3899713 (1975-08-01), Barkan et al.
patent: 3911215 (1975-10-01), Hurst et al.
patent: 3958239 (1976-05-01), Green
patent: 3965465 (1976-06-01), Alexander
patent: 3984757 (1976-10-01), Gott et al.
patent: 4031408 (1977-06-01), Holz
patent: 4056699 (1977-11-01), Jordan
patent: 4061453 (1977-04-01), Moennig
patent: 4071689 (1978-01-01), Talmage et al.
patent: 4090092 (1978-05-01), Serrano
patent: 4101805 (1978-07-01), Stone
patent: 4101886 (1978-07-01), Grimes et al.
patent: 4119864 (1978-10-01), Petrizio
patent: 4123631 (1978-10-01), Lewis
patent: 4136291 (1979-01-01), Waldron
patent: 4145748 (1979-03-01), Eichelberger et al.
patent: 4152629 (1979-05-01), Raupp
patent: 4159473 (1979-06-01), Senk
patent: 4161766 (1979-07-01), Castleberry et al.
patent: 4174517 (1979-11-01), Mandel
patent: 4185210 (1980-01-01), Zuk
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: 4223301 (1980-09-01), Grimes et al.
patent: 4237386 (1980-12-01), Instance
patent: 4246533 (1981-01-01), Chiang
patent: 4264831 (1981-04-01), Wern
patent: 4289972 (1981-09-01), Wern
patent: 4289980 (1981-09-01), McLaughlin
patent: 4290052 (1981-09-01), Eichelberger et al.
patent: 4293987 (1981-10-01), Gottbrecht et al.
patent: 4304976 (1981-12-01), Gottbrecht et al.
patent: 4323829 (1982-04-01), Witney et al.
patent: 4360737 (1982-11-01), Leopold
patent: 4374381 (1983-02-01), Ng et al.
patent: 4380040 (1983-04-01), Posset
patent: 4394643 (1983-07-01), Williams
patent: 4400758 (1983-08-01), Frame
patent: 4413252 (1983-11-01), Tyler et al.
patent: 4439647 (1984-03-01), Calandrello et al.
patent: 4476463 (1984-10-01), Ng et al.
patent: 4493377 (1985-01-01), Gunther et al.
patent: 4495485 (1985-01-01), Smith
patent: 4529968 (1985-07-01), Hilsum et al.
patent: 4535254 (1985-08-01), Khatri
patent: 4550310 (1985-10-01), Yamaguchi et al.
patent: 4561002 (1985-12-01), Chui
patent: 4567470 (1986-01-01), Yoshikawa et al.
patent: 4584519 (1986-04-01), Gruodis
patent: 4614937 (1986-09-01), Poujois
patent: 4651133 (1987-03-01), Ganesan et al.
patent: 4731694 (1988-03-01), Grabner et al.
patent: 4736190 (1988-04-01), Fiorella
patent: 4740781 (1988-04-01), Brown
patent: 4743895 (1988-05-01), Alexander
patent: 4855550 (1989-08-01), Schultz, Jr.
patent: 4894493 (1990-01-01), Smith et al.
patent: 4901074 (1990-02-01), Sinn et al.
patent: 4920343 (1990-04-01), Schwartz

Affiliated with

Also associated with

Rating

Touch-sensitive control circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Touch-sensitive control circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Touch-sensitive control circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1192511