Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1982-08-30
1985-12-24
Caldwell, Sr., John W.
Communications: electrical
Audible indication
Percussion-type sound producer
200 5A, 200DIG1, 340365R, G08C 900
Patent
active
045610029
ABSTRACT:
A capacitive attenuator type touch switch cell arrangement employs a touch responsive pad or electrode and a receiver electrode of comparable surface area on opposing surfaces of a dielectric substrate for capacitive coupling therebetween, which capacitive coupling is alterable by the human touching of or proximate to the touch pad. A scan signal is coupled from signal generating circuitry to the touch responsive pad by a separate transmitting capacitor. Signal detection circuitry senses the signal coupled to the receiver electrode to detect attenuation of the coupled signal signifying the touching of the touch pad. The use of a separate capacitor to provide the transmitting capacitance reduces the touch pad area requirement, thereby permitting closer spacing of touch switch cells for greater switch density on a control panel.
REFERENCES:
patent: 3482241 (1969-12-01), Johnson
patent: 3653038 (1972-03-01), Webb
patent: 3668417 (1972-06-01), Sessler
patent: 3691555 (1972-09-01), Looschen
patent: 3750149 (1973-07-01), Sessler
patent: 3786495 (1974-01-01), Spence
patent: 3846791 (1974-11-01), Foster
patent: 3971013 (1976-07-01), Challoner et al.
patent: 4027306 (1977-05-01), Hackmeister
patent: 4053789 (1977-10-01), Schultz
patent: 4125783 (1978-11-01), Sefton
patent: 4136291 (1979-01-01), Waldron
patent: 4145748 (1979-03-01), Eichelberger et al.
patent: 4157539 (1979-06-01), Hunts et al.
patent: 4221975 (1980-09-01), Ledniczki
patent: 4233522 (1980-11-01), Grummer et al.
patent: 4237421 (1980-12-01), Waldron
patent: 4288786 (1981-09-01), Ledniczki
patent: 4290061 (1981-09-01), Serrano
patent: 4394643 (1983-07-01), Williams
patent: 4398181 (1983-08-01), Yamamoto
patent: 4413252 (1983-11-01), Tyler
patent: 4415781 (1983-11-01), Frame
patent: 4441097 (1984-04-01), Anderson
patent: 4446350 (1984-05-01), Mizukawa
Caldwell Sr. John W.
General Electric Company
Heim Michael F.
Houser H. Neil
Reams Radford M.
LandOfFree
Capacitive touch switch arrangement does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Capacitive touch switch arrangement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Capacitive touch switch arrangement will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1482390