Patent ID: 9025041
Filing Date: 2015-05-05
Classification: H04N

Abstract:
1. A solid-state imaging apparatus comprising: a plurality of pixels arranged two dimensionally; a reference signal generating circuit configured to generate a reference signal of which voltage changes monotonically with time; a counter performing a counting operation according to the changing of the reference signal; a read out circuit having a comparator comparing between a signal derived of the pixel and the reference signal, and analog-to-digital converting the signal outputted from the pixel based on an output from the comparator and a count value of the counter, so as to perform an operation of analog-to-digital conversion of a reset level of the pixel, and to perform an operation of analog-to-digital conversion of the signal derived of the pixel; and a control circuit configured to obtain a conversion value obtained by the analog-to-digital conversion of the reset level of the pixel, and to adjust, based on the conversion value, a reference voltage based on which the comparator is reset.