Position coordinate input device

Details Position coordinate input device Position coordinate input device

1984-05-31

1985-12-17

Schreyer, Stafford D.

Telegraphy

Systems

Position coordinate determination for writing

177211, G08C 2100

Patent

active

045587574

ABSTRACT:
A position coordinate input device including an input plate subjected, at a point, to an external force with a finger, etc. so as to input data of coordinates of the point into a computer and the like. The device further includes four elastic support members for supporting the input plate, a pair of two first detectors yielding outputs of temperature characteristics of a first sign and a pair of two second detectors yielding outputs of temperature characteristics of a second sign opposite to the first sign so as to enable accurate detection of the coordinates of the point of application of the external force in a simplified construction.

REFERENCES:
patent: 3657475 (1972-04-01), Peronneau et al.
patent: 3727002 (1973-04-01), Pear, Jr.
patent: 4121049 (1978-10-01), Roeber
patent: 4389711 (1983-06-01), Hotta et al.
patent: 4453609 (1984-06-01), Griffen et al.

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