Addressable photodetector array

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system

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Details

358213, H04N 5335

Patent

active

046314172

ABSTRACT:
An addressable photodetector array comprises row addressing lines, column addressing lines, an output line and a biasing line common to all the photodetectors. It further comprises a respective addressing circuit associated with each photodetector. The addressing circuit comprises a first transistor, a second transistor, a first series circuit controlling the second transistor and a second series circuit controlling the first transistor and the first circuit according to a signal on a row addressing line and a signal on a column addressing line.

REFERENCES:
patent: 3465293 (1969-09-01), Weckler
patent: 3715485 (1973-02-01), Weimer
patent: 4109284 (1978-08-01), Tompkins
patent: 4571624 (1986-02-01), Nishizawa et al.

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