PURPOSE: To prevent mixture of an adjacent picture element component due to interpolation processing by using a single pulse train synchronously with one of plural pulse trains with different phases so as to sample and hold plural output signals of a sample-and-hold circuit.

CONSTITUTION: Plural 2nd sample-and-hold circuits 15 are provided, which use a single pulse train synchronously with one of plural pulse trains with different phases so as to sample and hold plural output signals of a sample-and- hold circuit 7. Then the interpolation processing in the horizontal and vertical directions in the solid-state image pickup element 1 in 2-dimension arrangement is not implemented. Thus, the mixture of adjacent picture element components is prevented and the phase shift between color signals is eliminated by a 2nd color signal sampling and holding by the 2nd sample-and-hold circuit 15.