Coordinate detecting method

Details Coordinate detecting method Coordinate detecting method

1987-03-03

1988-07-19

Schreyer, Stafford D.

Telegraphy

Systems

Position coordinate determination for writing

G08C 2100

Patent

active

047586907

ABSTRACT:
A coordinate detecting method, adapted to a coordinate input device comprising an input plane having a plurality of parallel embedded loops, establishes a plurality of coarse regions while taking as a reference the polarity reversing positions of a magnetic field detected when these loops are scanned in sequence. The method comprises the steps of specifying one coarse region to be interpolated, interpolating the designation position of a coordinate designating member within the specified coarse region, and calculating the coordinate of the designation position on the basis of the coordinate position of the specified coarse region and an interpolation value obtained in the interpolating step.

REFERENCES:
patent: 4616107 (1986-10-01), Abe et al.

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