Stylus devices responsive to pressure changes for use in videogr

Details Stylus devices responsive to pressure changes for use in videogr Stylus devices responsive to pressure changes for use in videogr

1984-02-13

1986-04-01

Schreyer, Stafford D.

Telegraphy

Systems

Position coordinate determination for writing

G08C 2100

Patent

active

045800073

ABSTRACT:
A stylus device for use in a videographic apparatus, includes a housing with a projecting stylus. In operation, pressure changes cause movement of the resiliently mounted stylus. This carries a magnet which co-operates with a Hall Effect transducer such that the pressure variation is converted into signal changes by the transducer. A moveable carrier allows the transducer to be moved to adjust the preload pressure in the stylus together with the preload out-put of the transducer.

REFERENCES:
patent: 2866857 (1958-12-01), Andrews
patent: 3528295 (1970-09-01), Johnson et al.

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