Solid-state imaging device for analog-to-digital conversion
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United States of America Patent
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Aug 11, 2015
Grant Date -
Jun 6, 2013
app pub date -
Oct 19, 2012
filing date -
Oct 21, 2011
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Abstract
A solid-state imaging device is capable of suppressing as much as possible an increase in power consumption of a low-frequency noise removing process. A pixel unit includes pixels outputting pixel signals corresponding to an amount of incident light and correction pixels outputting correction pixel signals corresponding to a correction reference voltage. An AD conversion circuit includes a delay circuit, to which a plurality of delay elements are connected, and outputs a digital signal corresponding to the number of delay elements through which a pulse signal passes when the pulse signal passes through the number of delay elements corresponding to a level of the pixel signal or the correction pixel signal.
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