| 摘要 |
An image pickup device may include an image pickup unit in which unit pixels having photoelectric conversion elements are arranged, the unit pixels outputting pixel signals, a reference signal generation unit, a comparison unit that includes a differential amplifier unit and a reset unit, the differential amplifier unit comparing a voltage of the first input terminal to a voltage of the second input terminal, a measurement unit that measures a comparison time of the comparison unit from a comparison start to a comparison end, and a change unit that changes the voltage of the first input terminal so that a voltage difference between the first input terminal and the second input terminal is set to a voltage at which a comparison operation by the comparison unit is ensured after a reset operation by the reset unit. |
