Method and apparatus for binary coding of sensor signals from op

Details Method and apparatus for binary coding of sensor signals from op Method and apparatus for binary coding of sensor signals from op

1981-12-15

1983-09-06

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250209, H01J 4014

Patent

active

044031416

ABSTRACT:
A method and apparatus for binary coding of sensor signals received from a number of optoelectronic sensor elements employ an evaluator associated with each sensor element for generating binary output signals corresponding to the amount of charge generated by the associated sensor element. Selected pairs of evaluators are connected to an electronic switch, with one of the evaluator outputs serving to actuate the switch for the purpose of undertaking a charge quantity comparison between the associated sensors which are disposed a small distance from one another. Each evaluator includes a converter consisting of a switching transistor and a load element connected in series, and a barrier transistor connecting the output of the associated sensor element with the input of the converter, and a reset transistor for connecting the converter input with a constant voltage source.

REFERENCES:
Semiconductor Memory Design and Application by Luecke et al., International Student Edition, McGraw-Hill Kogakusha, Ltd., Tokyo, 1973, pp. 65-69.

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