| 摘要 |
An image sensor in which a plurality of pixels are arrayed in a row direction and a column direction, and an A/D converter is provided on each column of the plurality of pixels. The A/D converter performs one of charge and discharge from an initial value which is a voltage corresponding to an output signal from a pixel, outputs, as a digital value of the output signal, a value corresponding to a time taken for the voltage to become higher or lower than a predetermined reference voltage, and changes one of an amount of charge and an amount of discharge per unit time according to a possible value of the output signal. |
