Conductive electrode arrays and arrays of resistive elements for

Details Conductive electrode arrays and arrays of resistive elements for Conductive electrode arrays and arrays of resistive elements for

1983-07-12

1988-07-05

Schreyer, Stafford D.

Telegraphy

Systems

Position coordinate determination for writing

340365R, G08C 2100

Patent

active

047556340

ABSTRACT:
Selected touch point locating apparatus has an array of two or more electrical touch members constituted by conductive electrodes or impedance elements coupled to a circuit for causing electric current to flow through a selected touch point as the algebraic sum of separate currents through the electrical touch members. The relative amplitudes are translated into at least two signals corresponding to the location in two axes of the selected touch point.

REFERENCES:
patent: 4293734 (1981-10-01), Pepper
patent: 4305007 (1981-12-01), Hughes
patent: 4430917 (1984-02-01), Pepper

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