Telautograph system

Details Telautograph system Telautograph system

1984-12-18

1986-12-23

Schreyer, Stafford D.

Telegraphy

Systems

Position coordinate determination for writing

178 19, G08C 2100

Patent

active

046313559

ABSTRACT:
The position (XY coordinate) of a pointed stylus on a conductive sheet is determined by injecting current from the stylus into the sheet and measuring the current responses at three or more spaced apart electrodes connected to the sheet.

REFERENCES:
patent: 3911215 (1975-10-01), Hurst et al.
patent: 4071689 (1978-01-01), Talmage et al.
patent: 4121049 (1978-10-01), Roeber
patent: 4198539 (1980-04-01), Pepper
patent: 4214122 (1980-07-01), Kley
patent: 4293734 (1981-10-01), Pepper, Jr.
patent: 4456787 (1984-06-01), Schlosser et al.

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