Coordinate input device with display

Details Coordinate input device with display Coordinate input device with display

1985-01-07

1986-09-02

Schreyer, Stafford D.

Telegraphy

Systems

Position coordinate determination for writing

G08C 2100

Patent

active

046097767

ABSTRACT:
A coordinate input device with display comprises a tablet having a plurality of X-direction magnetostrictive transmission mediums arranged in parallel, a plurality of Y-direction magnetostrictive transmission mediums arranged in parallel and superposed on the X-direction transmission mediums substantially orthogonally thereto, and first and second coils arranged over substantial regions of the magnetostrictive transmission mediums. A magnetic pen is used to produce just enough magnetism for causing a local increase of the electro-mechanical coupling coefficient in the magnetostrictive transmission mediums in the tablet.

REFERENCES:
patent: 3962679 (1976-06-01), Engelbnecht
patent: 4205199 (1980-05-01), Mochizuki
patent: 4482784 (1984-11-01), Whefstone
patent: 4514688 (1985-04-01), Whefstone

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