Patent attributes
A solid-state image pickup device reduces the load of outputs from pixels and suppresses a decrease in gain, a reduction in a speed, and the like using a circuit for adding (averaging) a plurality of pixel signals. The device has a plurality of pixels which are one-dimensionally or two-dimensionally arranged and output photoelectrically converted signals, and a plurality of output lines to which the output signal(s) from one pixel or the pixels arranged on one column is/are outputted. A signal adder circuit for arbitrarily adding the output signals from the plurality of output lines and outputting an addition signal and a signal output circuit for outputting each of the output signals, as individual signals, from the plurality of output lines without adding them are independently provided.
