Solid-state imaging device and imaging system using a bit reduction method based on a reduced pixel signal
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United States of America Patent
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Jan 30, 2018
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Aug 11, 2016
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Feb 20, 2014
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Abstract
A solid-state imaging device includes a pixel signal processing unit which has a plurality of pixels disposed in a two-dimensional matrix, outputs each of pixel signals generated by all pixels as a total pixel signal, and outputs each of the pixel signals generated by the pixels with the number of pixels reduced to a prescribed number of pixels as a reduced pixel signal, a bit reduction method determination unit which determines a bit reduction method for reducing the number of pixels of a digital value representing the amount of the total pixel signal based on the reduced pixel signal, and a bit reduction unit which reduces the number of bits of the digital value based on the bit reduction method and outputs the digital value with the reduced number of bits as a digital value corresponding to the total pixel signal.
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