Graphical input terminal

Details Graphical input terminal Graphical input terminal

1984-04-30

1986-07-29

Schreyer, Stafford D.

Telegraphy

Systems

Position coordinate determination for writing

G08C 2100

Patent

active

046032304

ABSTRACT:
A graphical input terminal for generating an electrical signal representative of a location on an input surface, with respect to a pair of coordinates, in which a character, figure or like graphical information is written by hand. A first resistive film is formed on a flat substrate which is formed with through passageways for air, while a flexible sheet is disposed to face the substrate. A second resistive film is formed on one surface of the flexible sheet to face the first resistive film at a spacing therefrom. Immediately after information has been handwritten on the input surface of the terminal, air is forced into the spacing between the first and second resistive films to separate them from each other.

REFERENCES:
patent: 4079194 (1978-03-01), Kley

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