Solid-state image pickup apparatus

A solid-state image pickup apparatus comprising:

• a plurality of two-dimensionally arrayed unit pixels, each of the unit pixels including an optical-electrical conversion element performing optical-electrical conversion of an incident light;
• a charge conversion element and two output terminals provided for each of a plurality of pixel groups, each pixel group including one or more of the unit pixels, the charge conversion element converting a signal charge optical-electrical converted by the optical-electrical conversion element of each of the unit pixels in the pixel group into a voltage or current, and the two output terminals being capable of outputting a noise signal that occurs at the time of resetting the charge conversion element and a signal-noise sum signal obtained by adding a signal that has occurred by optical-electrical conversion to the noise signal separately;
• a plurality of first transfer lines to which ones of the output terminal pairs of a plurality of the pixel groups are connected in common, the plurality of first transfer lines being capable of holding voltages based on the noise signals outputted from the output terminals;
• a plurality of second transfer lines to which the others of the output terminal pairs of the plurality of the pixel groups are connected in common, the plurality of second transfer lines being capable of holding voltages based on the signal-noise sum signals outputted from the output terminals;
• first switches arranged between the ones of the output terminal pairs and the first transfer lines;
• second switches arranged between the others of the output terminal pairs and the second transfer lines;
• a third switch provided for each of the first transfer lines;
• a fourth switch provided for each of the second transfer lines;
• a third transfer line to which the plurality of first transfer lines are connected in parallel via the third switches, respectively;
• and
• a fourth transfer line to which the plurality of second transfer lines are connected in parallel via the fourth switches, respectively.