Solid-state imaging apparatus and method for driving the same
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United States of America Patent
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May 5, 2015
Grant Date -
Jul 18, 2013
app pub date -
Dec 21, 2012
filing date -
Jan 18, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A solid-state imaging apparatus includes: a plurality of pixels; a reference signal generating circuit configured to generate a ramp signal; a counter performing a counting operation according to the changing of the ramp signal; a read out circuit having a comparator comparing a signal read out from the pixel with the ramp signal, and converting an analog signal outputted from the pixel to a digital signal; and a control circuit configured to adjust a reset potential to be used when the comparator is reset, wherein the control circuit obtains a conversion value derived by converting an analog signal derived of a reset level of the pixel to a digital signal, and adjusts a reference potential based on the conversion value to make a dynamic range of A/D conversion follow the fluctuation of the reset level of the pixel.
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