Patent ID: 8451361
Filing Date: 2013-05-28
Classification: H04N

Abstract:
1. An image pickup device comprising: an image sensor including a plurality of analog-to-digital converters for determining conversion results from a digital signal of two or more bits, starting from a higher order bit, through separate steps performed two or more times; a first correction unit including a plurality of correction factor vectors for correcting nonlinear errors of the plurality of analog-to-digital converters so as to adapt to the analog-to-digital converters, and which corrects the nonlinear errors of the digital signals respectively output from the plurality of analog-to-digital converters based on the plurality of correction factor vectors respectively corresponding to the analog-to-digital converters, wherein, after converting each the digital signals from the plurality of analog-to-digital converters into a serial output, the first correction unit corrects the nonlinear errors using an arithmetic operation based on the converted digital signals and the plurality of correction factor vectors.