Device for two-dimensional localization of events that generate

Details Device for two-dimensional localization of events that generate Device for two-dimensional localization of events that generate

1987-12-17

1988-11-29

Schreyer, Stafford D.

Telegraphy

Systems

Position coordinate determination for writing

178 19, G08C 2100

Patent

active

047883847

ABSTRACT:
Electrodes are placed at the periphery of a resistive surface to pick up a current generated at a point on the resistive surface. Each electrode is connected to at least three summing lines via respective resistors each having a fixed resistance value which is predetermined as a function of the summing line and of the electrode in such a manner as to obtain analog signals from at least two of the summing lines which are linear functions of respective co-ordinates (with respect to a predetermined co-ordinate system) of a point on the resistive surface at which current is generated.

REFERENCES:
patent: 3798370 (1974-03-01), Hurst
patent: 4129747 (1978-12-01), Pepper

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