Method of electromagnetically reading coordinate data

Details Method of electromagnetically reading coordinate data Method of electromagnetically reading coordinate data

1983-10-24

1985-11-19

Schreyer, Stafford D.

Telegraphy

Systems

Position coordinate determination for writing

G08C 2100

Patent

active

045544093

ABSTRACT:
In an electromagnetic type digitizer system having a cursor coil and a tablet, the cursor position can be determined accurately by much a simplified method which basically uses a distribution curve of electromotive force induced by the cursor coil in the tablet.

REFERENCES:
patent: 3647963 (1972-03-01), Bailey
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patent: 4018989 (1977-04-01), Snyder et al.
patent: 4088842 (1978-05-01), Ikedo
patent: 4213005 (1980-07-01), Cameron
patent: 4240065 (1980-12-01), Howbrook
patent: 4298772 (1981-11-01), Kobayashi et al.
patent: 4368351 (1983-01-01), Zimmer
patent: 4418242 (1983-11-01), Kouno

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