Passive electro-optic display device

Details Passive electro-optic display device Passive electro-optic display device

1976-10-21

1978-01-10

Pitts, Harold I.

Communications: electrical

Audible indication

Percussion-type sound producer

340336, 340378B, G08B 500

Patent

active

040682307

ABSTRACT:
An electro-optic display device having an activable surface. The surface including several separately activable zones, each zone having at least two sets of parallel discrete elements imbricated one in another and each set also separately activable. By simultaneously activating several different sets of elements, at least two separate imbricated patterns or data may be displayed simultaneously. The separate patterns may be observed independently through a reticulated transparent screen which may be movable to display one pattern, then the other.

REFERENCES:
patent: 3406476 (1968-10-01), Wilcox
patent: 3468545 (1969-09-01), Anderson
patent: 3903519 (1975-09-01), Zega
patent: 3924227 (1975-12-01), Stulov

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