Telegraphy – Systems – Position coordinate determination for writing
Patent
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
Kobayashi Tadashi
Sato Toshio
NEC Corporation
Schreyer Stafford D.
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