A solid-state imaging device in which a signal from a first photoelectric conversion portion of one pixel, signals from the first photoelectric conversion portion and a second photoelectric conversion portion of the one pixel, and a noise signal from the one pixel are converted into a first digital signal, a second digital signal, and a third digital signal, respectively. As signals of pixels in a first pixel row, the first, the second, and the third digital signals are input from a memory unit to output signal lines. As signals of pixels in a second pixel row adjacent to the first pixel row of a pixel unit in the row direction, the second and the third digital signals are input from the memory unit to the output signal lines while the first digital signal is not output.