Coordinate reading device

Details Coordinate reading device Coordinate reading device

1978-11-24

1981-06-16

Robinson, Thomas A.

Telegraphy

Systems

Position coordinate determination for writing

G08C 2100

Patent

active

042739543

ABSTRACT:
A coordinate reading device including magnetostrictive vibration transmission media to attain coordinate readings of analog figures. A fixed magnetizing coil is wound about or placed on the surface of the media to automatically magnetize the media. A preparatory exciting system excites the exciting coil of the media before an effective excitation pulse is applied to the coil by suitable delay circuits.

REFERENCES:
patent: 3806642 (1974-04-01), Veith et al.
patent: 3846580 (1974-11-01), Brenner
patent: 3904821 (1975-09-01), Whetstone et al.
patent: 3956588 (1976-05-01), Whetstone et al.
patent: 4018989 (1977-04-01), Snyder et al.
patent: 4081603 (1978-03-01), Davis et al.

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