Reading apparatus having PIN structure wherein storage and paras

Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit

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250578, H01J 4014

Patent

active

047031697

ABSTRACT:
A reading apparatus including a plurality of photodiodes each provided with a storage capacitor, the photodiodes adapted to store electric charge in the storage capacitor upon receiving light, a plurality of analog switches each connected in series with one end of each of the photodiodes, an element for leading out an amount of electric charge as a signal when the amount of electric charge is stored in the storage capacitor, a shift register for rendering the plurality of analog switches conductive successively in time sequence, wherein capacitance of the storage capacitor is larger than parasitic capacitance of the analog switch.

REFERENCES:
patent: 3946151 (1976-03-01), Kamiyama et al.
patent: 4571626 (1986-02-01), Yamada
patent: 4593152 (1986-06-01), Yamazaki

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