Touch control system

Details Touch control system Touch control system

1993-03-29

1996-11-05

Hofsass, Jeffery

Coded data generation or conversion

Bodily actuated code generator

Including keyboard or keypad

341 26, 345168, 200600, 361181, 219451, H03K 17955

Patent

active

055722059

ABSTRACT:
A touch control system that is responsive to a user input selection includes an electrically non-conducting substrate, such as glass ceramic, and at least one capacitive-responsive touch pad on the substrate. A source signal having a primary frequency that is greater than 150 kHz, and preferably in the range of between 150 kHz and 500 kHz, is applied to one portion of the touch pad. The touch pad couples the electrical signal to another portion of the touch pad in order to develop a detection signal, which is decoded in order to determine the presence of the capacitance of a user. The decoder preferably includes a peak detector composed of a low gain circuit in order to avoid distortion of the detection signal. Greatly improved performance in the presence of liquids, such as water, on the touch pad is provided. This is especially useful when the touch pad is applied to a horizontal surface, such as a cook top, upon which liquid spills may occur. A display is juxtaposed with the glass ceramic substrate and an optical correction material is provided between the display and the underlying modulated surface that imparts mechanical strength to the substrate. The optical correction material corrects optical distortion of the visual indications of the display caused by the modulated surface.

REFERENCES:
patent: 3846791 (1974-11-01), Foster
patent: 3971013 (1976-07-01), Challoner et al.
patent: 3974472 (1976-08-01), Gould et al.
patent: 4056699 (1977-11-01), Jordan
patent: 4090092 (1978-05-01), Serrano
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: 4159473 (1979-06-01), Senk
patent: 4161766 (1979-07-01), Castleberry et al.
patent: 4175239 (1979-11-01), Sandler
patent: 4203280 (1980-05-01), Ziegler et al.
patent: 4211915 (1980-07-01), Miller et al.
patent: 4237421 (1980-12-01), Waldron
patent: 4246533 (1981-01-01), Chiang
patent: 4263659 (1981-04-01), Hirata et al.
patent: 4290052 (1981-09-01), Eichelberger et al.
patent: 4291303 (1981-09-01), Cutler et al.
patent: 4304976 (1981-12-01), Gottbreht et al.
patent: 4308443 (1981-12-01), Tucker et al.
patent: 4323829 (1982-04-01), Witney et al.
patent: 4380040 (1983-04-01), Posset
patent: 4394643 (1983-07-01), Williams
patent: 4400758 (1983-08-01), Frame
patent: 4405917 (1983-09-01), Chai
patent: 4405918 (1983-09-01), Wall et al.
patent: 4413252 (1983-11-01), Tyler et al.
patent: 4439647 (1984-03-01), Calandrello et al.
patent: 4446350 (1984-05-01), Mizukawa et al.
patent: 4495485 (1985-01-01), Smith
patent: 4527049 (1985-07-01), Thomas et al.
patent: 4529968 (1985-07-01), Hilsum et al.
patent: 4550310 (1985-10-01), Yamaguchi et al.
patent: 4561002 (1985-12-01), Chiu
patent: 4567470 (1986-01-01), Yoshikawa et al.
patent: 4614937 (1986-09-01), Poujois
patent: 4651133 (1987-03-01), Ganesan et al.
patent: 4665324 (1987-05-01), Ogino et al.
patent: 4709228 (1987-11-01), Hucking et al.
patent: 4712163 (1987-12-01), Oxley
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: 4794233 (1988-12-01), Goessler et al.
patent: 4855550 (1989-08-01), Schultz, Jr.
patent: 4894493 (1990-01-01), Smith et al.
patent: 4901074 (1990-02-01), Sinn et al.
patent: 4914553 (1990-04-01), Hamada et al.
patent: 4920343 (1990-04-01), Schwartz
patent: 4924222 (1990-05-01), Antikidis et al.
patent: 4954823 (1990-09-01), Binstead
patent: 4983812 (1991-01-01), Worrall et al.
patent: 5012124 (1991-04-01), Hollaway
patent: 5153572 (1992-10-01), Caldwell et al.
patent: 5155338 (1992-10-01), Hoffmann
patent: 5157273 (1992-10-01), Medendorp et al.
patent: 5183996 (1993-02-01), Hazan et al.
patent: 5189417 (1993-02-01), Caldwell et al.
patent: 5270710 (1993-12-01), Gaultier et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2017723