Image sensing device and control method thereof with switchable analog-to-digital conversion modes based on the amount of dark current generated in pixels
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United States of America Patent
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Apr 30, 2019
Grant Date -
Jan 25, 2018
app pub date -
Jul 19, 2017
filing date -
Jul 20, 2016
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Abstract
An image sensing device includes: a plurality of pixels; and an AD converter that compares a pixel signal output from the plurality of pixels with a slope voltage having a temporally variable potential so as to perform AD conversion on the pixel signal, and switching is performed between a first mode and a second mode according to an imaging condition, the first mode being a mode in which the pixel signal is AD converted by selecting one from among a plurality of slope voltages and comparing the pixel signal with the selected slope voltage, and the second mode being a mode in which the pixel signal is AD converted by comparing the pixel signal with a predetermined slope voltage.
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