Photoelectric converting apparatus with maximum and minimum accumulation detecting
AssigneeCanon Kabushiki Kaisha
InventorToshiki Nakayama
Life of this patent
Estimating the term…
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.
Claims12
A photoelectric converting apparatus comprising:
- a plurality of photoelectric conversion elements for accumulating charges which were photoelectrically converted within a predetermined time;
- a common output amplifier;
- at least one of maximum value detecting means for detecting a maximum accumulation signal of one of said photoelectric conversion elements into which a strongest light impinges and minimum value detecting means for detecting a minimum accumulation signal of one of said photoelectric conversion elements into which a weakest light impinges;
- and
- reading means for reading out the maximum accumulation signal obtained from said maximum value detecting means or/and the minimum accumulation signal obtained from said minimum detecting means through said common output amplifier.
A photoelectric converting apparatus comprising:
- a plurality of photoelectric conversion elements for accumulating charges which were photoelectrically converted within a predetermined time;
- a common output amplifier;
- at least one of maximum value detecting means for detecting a maximum accumulation signal of one of said photoelectric conversion elements into which a strongest light impinges and minimum value detecting means for detecting a minimum accumulation signal of one of said photoelectric conversion elements into which a weakest light impinges;
- operation means for executing an operation on the basis of the maximum accumulation signal obtained from said maximum value detecting means or/and the minimum accumulation signal obtained from said minimum value detecting means;
- and
- reading means for reading out a signal obtained by the operation means through said common output amplifier.
Dependencies are inferred from the claim text.