Arrays of resistive elements for use in touch panels and for pro

Details Arrays of resistive elements for use in touch panels and for pro Arrays of resistive elements for use in touch panels and for pro

1988-01-04

1988-10-18

Schreyer, Stafford D.

Telegraphy

Systems

Position coordinate determination for writing

G08C 2100

Patent

active

047789514

ABSTRACT:
Selected touch point locating apparatus has an array of two or more electrical touch members constituted by 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: 3767858 (1973-10-01), Rodgers
patent: 4293734 (1981-10-01), Pepper
patent: 4430917 (1984-02-01), Pepper

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