Solid-state imaging apparatus with fixed pattern noise reduction

In a solid-state imaging apparatus having photoelectric elements which are arrayed in two dimensions, a plurality of first switching elements whose input terminals are connected to the corresponding photoelectric elements, a plurality of second switching elements whose input terminals are connected to output terminals of the first switching elements, a first scanner which applies first scanning pulses to control terminals of the first switching elements, a second scanner which applies second scanning pulses to control terminals of the second switching elements, and at least one read-out line to which output terminals of the second switching elements, the solid-state imaging apparatus further comprising first and second sample-holding circuits connected to said read-out line for obtaining and holding samples of signals having noise therein derived through said read-out line from each said second switching element, a pulse generator connected to said first and second sample-holding circuits for applying sampling pulses to said first and second sample-holding circuits at predetermined times different from each other, and calculating means connected to said first and second sample-holding circuits for subjecting outputs from said first and second sample-holding circuits to predetermined calculations to reduce the noise in the signal derived through said read-out line and for providing a reduced noise output signal.