Position indicators

Details Position indicators Position indicators

1977-08-09

1978-11-21

Robinson, Thomas A.

Telegraphy

Systems

Position coordinate determination for writing

178 19, 340347AD, G08C 2100

Patent

active

041267605

ABSTRACT:
A graphical input tablet is described which is made up of layers of flexible material. The edges of planar conductors on the surfaces of the layers divide the layers into zones, with each layer having a unique combination of zones. When a point is indicated on the writing area of the tablet by applying pressure thereto, conductors on facing surfaces of the adjacent layers make contact and the contacts made are indicative of the position of the point.

REFERENCES:
patent: 3466646 (1969-09-01), Lewin
patent: 3696411 (1972-10-01), Kilby et al.
patent: 3914548 (1975-10-01), Barish
patent: 3921165 (1975-11-01), Dym

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