PURPOSE: To suppress the low frequency noises and to improve the sensitivity with a solid-state image pickup device by subtracting the bias signal component which is transferred into a charge coupled element from the level of the output signal of said coupled element.
CONSTITUTION: A photodiode group 8 is arrayed 2-dimensionally and connected to a charge coupled element 41 for horizontal transfer by a coupling part 5 and via plural vertical switches and vertical signal lines. The element 41 transfers the bias signal component even after it transferred the n-picture element signals within a horizontal scanning period τ1. Here a stage equivalent to (m) picture elements is set before a stage of (n) picture elements. Thus the m-picture element stage is not connected to the part 5. In such a way, it is possible to subtract the bias signal component from the output of the device 41.
OKUDA AKIHIDE
NISHIMURA RIYUUSHI
MASUDA MICHIO
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