Patent ID: 7906755

Claim:
A photoelectric conversion apparatus comprising: a plurality of pixels each of which comprises one photoelectric conversion element; an amplifier portion; a first signal storage portion configured to store an optical signal generated in at least one of the photoelectric conversion elements and output from the amplifier portion, wherein the first signal storage portion has a plurality of groups and each of the groups includes a plurality of first memories; a second signal storage portion configured to store a noise signal included in the optical signal and output from the amplifier portion, wherein the second signal storage portion has a plurality of groups and each of the groups includes a plurality of second memories; a plurality of first signal lines connected to the plurality of groups of the first signal storage portion on a one-to-one basis; a plurality of second signal lines connected to the plurality of groups of the second signal storage portion on a one-to-one basis; a plurality of first switches connected to the plurality of first signal lines on a one-to -one basis; a plurality of second switches connected to the plurality of second signal lines on a one-to-one basis; a third signal line connected to the plurality of first switches; a fourth signal line connected to the plurality of second switches; a reset unit configured to reset potentials of the third signal line and the fourth signal line; and a third switch configured to connect at least one of the plurality of the first signal lines and at least one of the plurality of the second signal lines on a one-to-one basis and to control a connection between at least one of the plurality of first signal lines and at least one of the plurality of second signal lines.