Telegraphy – Systems – Position coordinate determination for writing
Patent
1995-01-20
1997-07-22
Kuntz, Curtis
Telegraphy
Systems
Position coordinate determination for writing
345174, 341 33, G08C 2100
Patent
active
056505973
ABSTRACT:
The present invention relates to a capacitive touch sensor including a plurality of horizontal sensor bars arranged in a single direction. The touch sensor preferably receives differential sensor signals from the sensor array to reduce proximity effects and noise associated with conventional capacitive touch sensors. The touch sensor also utilizes an isolation circuit or floating interface to reduce the effects of external interference and increase the accuracy of touch sensing and localization. The bars are preferably comprised of indium tin oxide oriented in the machine direction of roll for superior linearity. The touch sensor may be utilized with display screens having thick dielectrics and also eliminates the need for a rear guard layer.
REFERENCES:
patent: 3482241 (1969-12-01), Johnson
patent: 4186392 (1980-01-01), Holz
patent: 4233522 (1980-11-01), Grummer et al.
patent: 4281323 (1981-07-01), Burnett et al.
patent: 4293734 (1981-10-01), Pepper, Jr.
patent: 4455452 (1984-06-01), Schuyler
patent: 4476463 (1984-10-01), Ng et al.
patent: 4550221 (1985-10-01), Mabusth
patent: 4707845 (1987-11-01), Krein et al.
patent: 4740781 (1988-04-01), Brown
patent: 4743895 (1988-05-01), Alexander
patent: 4806709 (1989-02-01), Evans
patent: 4831566 (1989-05-01), Mattews et al.
patent: 4853498 (1989-08-01), Meadows et al.
patent: 4916699 (1990-04-01), Ohashi
patent: 4922061 (1990-05-01), Meadows et al.
patent: 5041820 (1991-08-01), Kazama
patent: 5083118 (1992-01-01), Kazama
patent: 5153572 (1992-10-01), Caldwell et al.
patent: 5231381 (1993-07-01), Duwaer
patent: 5237879 (1993-08-01), Speeter
patent: 5270711 (1993-12-01), Knapp
patent: 5305017 (1994-04-01), Gerpheide
patent: 5418551 (1995-05-01), Ise
patent: 5488204 (1996-01-01), Mead et al.
patent: 5491706 (1996-02-01), Tagawa et al.
Dynapro Systems Inc.
Kuntz Curtis
Loomis Paul
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