Electrical transmission or interconnection systems – Personnel safety or limit control features – Interlock
Patent
1975-06-27
1977-06-07
Larkins, William D.
Electrical transmission or interconnection systems
Personnel safety or limit control features
Interlock
340173LM, 340173LT, 357 26, 357 30, 358213, H01L 2720, H01L 3100
Patent
active
040285650
ABSTRACT:
An improved optical storage device capable of storing optical images in a charge pattern in a high-resistivity piezoelectric semiconductor layer on a semiconductor substrate. A semiconductor substrate, coated with a layer of electrically insulating material, has a layer of high-resistivity piezoelectric semiconductor covering the insulating layer and covered by a semitransparent biasing electrode. When a negative bias is applied to the electrode, and an optical pattern applied through the electrode, slow states are charged in a short interval to store, for long periods, a pattern imaged by the light. The optical pattern can then be read by using acoustic surface wave imaging techniques to provide electrical imaging of the stored optical pattern.
REFERENCES:
patent: 3826866 (1974-07-01), Quate et al.
patent: 3935564 (1976-01-01), Quate et al.
Coldren, Appl. Phys. Lett. vol. 27, No. 1, July 1, 1975, pp. 6-8.
Coldren, Appl. Phys. Lett., vol. 25, No. 9, Nov. 1, 1974, pp. 473-475.
Grudkowski et al., Appl. Phys. Lett. vol. 25, No. 2, 15 July 1974, pp. 991.
Khuri-Yakub et al., Appl. Phys. Lett. vol. 25, No. 4, 15 Aug. 1974, pp. 188-190.
Larkins William D.
Montanye George A.
Schneider Philip
Sciascia R. S.
The United States of America as represented by the Secretary of
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