Electromagnetic detection line digitizer

Details Electromagnetic detection line digitizer Electromagnetic detection line digitizer

1977-09-16

1979-02-06

Robinson, Thomas A.

Telegraphy

Systems

Position coordinate determination for writing

346139C, G08B 522

Patent

active

041385926

ABSTRACT:
A graphic curve digitizer is disclosed wherein the x-y coordinate values of a response curve (made electrically conductive) are obtained by a digitally controlled x-y conductive probe and electronic system sensing when the probe contacts the curve by the voltage signal existing in the conductive curve due to the antenna effect of the conductive curve in an environmental alternating current electromagnetic field.

REFERENCES:
patent: 3894183 (1975-07-01), Barish
patent: 3936712 (1976-02-01), Gerber et al.
patent: 3982165 (1976-09-01), Rich

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