Image sensor and image capturing system
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United States of America Patent
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Aug 18, 2015
Grant Date -
Jan 9, 2014
app pub date -
Jun 27, 2013
filing date -
Jul 5, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
An image sensor in which a plurality of pixels are arrayed in a row direction and a column direction, and an A/D converter is provided on each column of the plurality of pixels. The A/D converter performs one of charge and discharge from an initial value which is a voltage corresponding to an output signal from a pixel, outputs, as a digital value of the output signal, a value corresponding to a time taken for the voltage to become higher or lower than a predetermined reference voltage, and changes one of an amount of charge and an amount of discharge per unit time according to a possible value of the output signal.
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