Method for driving image pickup device, method for correcting digital signal, image pickup device, method for driving image capturing system, and image capturing system

摘要

Digital signals (DN1, DN2, DS1, DS2) are generated on the basis of a potential at an input node of comparison means (301) by using a first reference signal (Vr1) whose potential changes by a first amount per unit time and a second reference signal (Vr2) whose potential changes by a second amount per unit time, the second amount being greater than the first amount. A correction value (±, ²) based on a difference in signal value between the digital signals (DN1, DN2, DS1, DS2) is derived. A digital signal based on a pixel signal is corrected on the basis of the derived correction value (±, ²).