Telegraphy – Systems – Position coordinate determination for writing
Patent
1977-03-30
1978-05-23
Robinson, Thomas A.
Telegraphy
Systems
Position coordinate determination for writing
338114, G08C 2100
Patent
active
040912345
ABSTRACT:
An improved joystick having an operating shaft mounted on a base with a ball and socket joint and a plurality of circuit elements directly actuated by the operating shaft. The circuit elements vary in impedance in correspondence to the displacement of the operating shaft so that the displacement of the operating shaft is converted into corresponding electrical signal.
REFERENCES:
patent: 2446392 (1948-08-01), Rey
patent: 2965715 (1960-12-01), Adler
patent: 3011063 (1961-11-01), Deutschle
patent: 3864515 (1975-02-01), Fee, Jr.
Atari Inc.
Robinson Thomas A.
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