A time an ith row reset signal RSi is generated and sent out for electronic shuttering is shifted from a conventionally defined time. In this manner, it is possible to avoid overlapping between a period during which the reset signal RSi is provided and a period during which an nth pixel row is selected to perform a readout operation thereon (i.e., a period when a row select signal SLn is at “High” level). As a result, reset potentials, which could otherwise be variable depending on whether or not readout operation is being performed on any other row, can be equalized among all the rows, thus eliminating the cause of horizontal noise.