Coded data generation or conversion – Bodily actuated code generator – Including keyboard or keypad
Patent
1994-03-17
1996-04-16
Peng, John K.
Coded data generation or conversion
Bodily actuated code generator
Including keyboard or keypad
341 26, 200600, 324678, H03K 1796
Patent
active
055087000
ABSTRACT:
A capacitance-sensitive switch unit including a capacitive element operable to produce an effective capacitance dependent upon the physical proximity of objects relative thereto, a first selector signal input connected to the capacitive element to enable a first input signal to charge the effective capacitance, a threshold signal producing circuit connected to the capacitive element, for producing a threshold signal which is rendered active when the effective capacitance charges to a pre-defined potential, a switching circuit for selectively connecting the capacitive element to the threshold signal producing circuit in response to a switching signal and a discharge control circuit connected to the capacitive element, for selectively discharging the effective capacitance independently of the input signal, in response to a discharge signal. Also disclosed is a switch array employing structure similar to the above.
REFERENCES:
patent: 3846791 (1974-11-01), Foster
patent: 3958239 (1976-05-01), Green
patent: 4017747 (1977-04-01), Sheng
patent: 4145748 (1979-03-01), Eichelberger et al.
patent: 4157539 (1979-06-01), Hunts et al.
patent: 4291303 (1981-09-01), Cutler et al.
patent: 4305135 (1981-12-01), Dahl et al.
patent: 4352141 (1982-09-01), Kent
patent: 4495485 (1985-01-01), Smith
patent: 4561002 (1985-12-01), Chiu
patent: 4567470 (1986-01-01), Yoshikawa et al.
patent: 4595913 (1986-06-01), Aubuchon
patent: 4728931 (1988-03-01), Linder et al.
patent: 4728932 (1988-03-01), Atherton
patent: 4772874 (1988-09-01), Hasegawa
patent: 4831279 (1989-05-01), Ingraham
patent: 4939382 (1990-07-01), Gruodis
patent: 5012124 (1991-04-01), Hollaway
patent: 5021740 (1991-06-01), Sarr et al.
patent: 5367198 (1994-11-01), Buerget et al.
Burton Mitchell G.
Taylor Thomas M.
Peng John K.
Tanisys Technology, Inc.
Wu Daniel J.
LandOfFree
Capacitance sensitive switch and switch array does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Capacitance sensitive switch and switch array, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Capacitance sensitive switch and switch array will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-328302