Patent ID: 8928789
Filing Date: 2015-01-06
Classification: H01L,H04N

Abstract:
1. A solid-state imaging apparatus comprising: a plurality of pixels arranged in a matrix for generating a signal by a photoelectric conversion; a column amplifying unit arranged corresponding to each of columns of the pixels, for outputting a first signal generated by amplifying the signal from the plurality of pixels at a first gain, and for outputting a second signal generated by amplifying the signal from the plurality of pixels at a second gain larger than the first gain; an analog to digital converter for converting the first and second signals from an analog signal to a digital signal; a comparing unit for receiving the digital signal from the analog to digital converter, level-shifting into the same gain level the first and second signals, and thereafter detecting a gain error between the level-shifted first and second signals; and a correction unit for correcting the first and second signals based on the gain error.