Magneto-optic chip with gray-scale capability

Details Magneto-optic chip with gray-scale capability Magneto-optic chip with gray-scale capability

1982-05-05

1985-01-22

Brigance, Gerald L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340716, 340793, 350377, 358 61, G09G 334

Patent

active

044954921

ABSTRACT:
Methods of operation and details of chip design to realize gray-scale capability in magneto-optic chips. Individual pixels are operated in three states by the addition of a stripped out state to the usual stable magnetized states in either direction. Varying thicknesses of film are employed along with stacked identically patterned chips operated in tandem. Pixel divisions are divided into individually-addressible areas of differing sizes which can be operated in different combinations to provide varying levels of brightness through each pixel position.

REFERENCES:
patent: 3971887 (1976-07-01), Lin et al.
patent: 3982239 (1976-09-01), Sherr
patent: 4063231 (1977-12-01), Mayor et al.
patent: 4170772 (1979-10-01), Bly
patent: 4229072 (1980-10-01), Torok et al.
patent: 4309084 (1982-01-01), Hill
patent: 4364039 (1982-12-01), Penz
Proceedings of the IEEE, vol. 87, "Ferroelectric Ceramic Electrooptic Materials and Devices", Land and Thacher, May 1969.

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