Touch-operated see-through coordinate input unit

Details Touch-operated see-through coordinate input unit Touch-operated see-through coordinate input unit

1986-05-30

1988-02-16

Schreyer, Stafford D.

Telegraphy

Systems

Position coordinate determination for writing

G08C 2100

Patent

active

047256966

ABSTRACT:
In the inventive touch-operated see-through coordinate input unit, the contacting wires embedded in the upper and lower substrate sheets in a relative perpendicular disposition are divided into groups each of at least two of the adjacent wires and the wires belonging to the same group are bonded to the same electrode. When the upper sheet is depressed with a finger tip or stylus point at a crossing point of the wires on the upper and lower sheets, electrical contact can be obtained at two points or more between wires so that, different from conventional coordinate input units in which electrical contact is obtained at only a single point by a pushing stroke, the reliability of the input operation can be greatly improved also with decreased fatigue of the operator in continuous working of long time.

REFERENCES:
patent: 4620062 (1986-10-01), Mizzi et al.
patent: 4638118 (1987-01-01), Wang et al.

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