Photoelectric converting apparatus with maximum and minimum accu

Details Photoelectric converting apparatus with maximum and minimum accu Photoelectric converting apparatus with maximum and minimum accu

1990-11-20

1993-01-26

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

35821331, H01J 4014

Patent

active

051824477

ABSTRACT:
A photoelectric converting apparatus having a plurality of photoelectric conversion elements which can accumulate charges which were photoelectrically converted comprises: at least one of a maximum value detection circuit to detect an accumulation signal of the photoelectric conversion element into which the strongest light enters and a minimum value detection circuit to detect an accumulation signal of the photoelectric conversion element into which the weakest light enters; and a reading circuit to read out the signal(s) which is/are obtained from the maximum value detection circuit or/and the minimum value detection circuit through the same reading system as that of the accumulation signals of the plurality of photoelectric conversion elements.

REFERENCES:
patent: 4633075 (1986-12-01), Sakai et al.
patent: 4701626 (1987-10-01), Ishizaki et al.
patent: 4839735 (1989-06-01), Kyomasu et al.

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