Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1981-01-19
1984-09-11
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
357 32, 358212, 340782, 34082595, H04N 312, H04N 314, H01L 2714
Patent
active
044712278
ABSTRACT:
An electronic addressing system to read matrices of optical-electronic elements, wherein the optical-electronic elements are of any type, for example photoresistors, photodiodes, light emitters, and the like. The matrices are bi-dimensional and comprise optical-electronic elements arranged according to a row-column structure, without any auxiliary switching an/or commutating means connected therewith. One end of each one of the elements is connected with a corresponding row near each row-column crossover, and the other end is connected with the column related to the crossover. The switching of each one of the optical-electronic elements which is addressed for reading is obtained by an adaptive analog compensation technique, whereby only a single element is read out while all other elements are electrically isolated.
REFERENCES:
patent: 3165634 (1965-01-01), Raymond
patent: 3189877 (1965-06-01), Pricer et al.
patent: 3536829 (1970-10-01), Gebel
patent: 3539995 (1970-11-01), Brandt
patent: 3696393 (1972-10-01), McDonald
patent: 4011441 (1977-03-01), Michon et al.
Electtronica, S.p.A.
Nelms David C.
Westin Edward P.
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