Patent ID: 7907196

Claim:
An image sensing apparatus comprising: a pixel including a photoelectric conversion unit; a column signal line connected to the pixel; a readout circuit that reads out a signal from the pixel via the column signal line; an output line connected to the readout circuit and having a capacitance; and an output unit that outputs an image signal in accordance with the signal that is output to the output line from the readout circuit, wherein the readout circuit includes: a first accumulation unit that holds the signal read out to the column signal line, a first opening/closing unit that opens/closes a connection between the column signal line and the first accumulation unit, a second accumulation unit, a transmission unit that transmits the signal held by the first accumulation unit to the second accumulation unit, and a second opening/closing unit that opens/closes a connection between the transmission unit and the second accumulation unit, wherein a capacitance of the first accumulation unit is smaller than a capacitance of the second accumulation unit, and wherein the signal held by the second accumulation unit is read out to the output unit based on the capacitance of the second accumulation unit and the capacitance of the output line.