Telegraphy – Systems – Position coordinate determination for writing
Patent
1984-11-29
1986-11-18
Schreyer, Stafford D.
Telegraphy
Systems
Position coordinate determination for writing
178 20, G08C 2100
Patent
active
046237577
ABSTRACT:
Touch mapping method and apparatus locate a touch to an unpatterned and continuous layer of selected electrical conductivity in response to the incremental electrical charge which the conductive layer draws at one or more known positions, in response to electrical excitation, and relative to the charge which layer draws in the absence of the touch condition. The measurement of electrical charge provides touch location for a variety of touch impedances and other impedences coupled with the selectively conductive layer.
REFERENCES:
patent: 2269599 (1942-01-01), Moodey
patent: 3530241 (1970-09-01), Ellis
patent: 3591718 (1971-07-01), Asano et al.
patent: 3624293 (1971-11-01), Baxter
patent: 3696409 (1972-10-01), Braaten
patent: 3699439 (1972-10-01), Turner
patent: 3758718 (1973-09-01), Fletcher et al.
patent: 3772684 (1973-11-01), Scantlin
patent: 3875331 (1975-04-01), Hasenbalg
patent: 3906190 (1975-09-01), Light
patent: 3959585 (1976-05-01), Mattes et al.
patent: 3973256 (1976-08-01), Stoesser et al.
patent: 4071691 (1978-01-01), Pepper, Jr.
patent: 4079194 (1978-03-01), Kley
patent: 4080514 (1978-03-01), Pobgee
patent: 4110749 (1978-08-01), Janko et al.
patent: 4129747 (1978-12-01), Pepper, Jr.
patent: 4145748 (1979-03-01), Eichelberger et al.
patent: 4157539 (1979-06-01), Hunts et al.
patent: 4198539 (1980-04-01), Pepper, Jr.
patent: 4198623 (1980-03-01), Misek et al.
patent: 4293734 (1982-10-01), Pepper, Jr.
patent: 4353552 (1982-10-01), Pepper, Jr.
patent: 4371746 (1983-02-01), Pepper, Jr.
patent: 4374381 (1983-02-01), Ng et al.
patent: 4430917 (1984-02-01), Pepper, Jr.
patent: 4476463 (1984-10-01), Ng et al.
patent: 4523654 (1985-06-01), Quayle et al.
Elographics, Inc., TIX, Sep. 1, 1983.
Sierracin/Intrex Products, TransFlex, May 1, 1980.
Interaction Systems, Inc.
Schreyer Stafford D.
LandOfFree
Method and apparatus for electronic touch mapping does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for electronic touch mapping, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for electronic touch mapping will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1618649