Patent ID: 8379127

Claim:
A pixel sensor array comprising: a photoelectric transformation element configured to generate electric charges in response to incident light; a signal transmitting circuit configured to output the electric charges accumulated in the photoelectric transformation element to a first node based on a first control signal, change an electric potential of the first node to an electric potential of a second signal line based on a second control signal, and output a signal sensed in the first node to a first signal line based on a third control signal; a switch element configured to connect or block a supply power terminal to the second signal line based on a fourth control signal; and a comparator connected to the first signal line and the second signal line and configured to compare a voltage of the signal and a voltage of a reference signal, wherein the switch element is configured to connect the supply power terminal to the second signal line and block current supplied from the comparator to the second signal line during a reset section, and connect the comparator to the second signal line and block the supply power terminal from the second signal line during a comparator operating section.