PURPOSE: To reproduce a picture with lots of scanning lines without flickering by forming an output of an image pickup element device of sequential scanning into an interlace signal, sending the signal and allowing a reception section to reproduce the signal as the sequential scanning television signal.

CONSTITUTION: A line sequential scanning signal is obtained by an image pickup device and it is converted into an interlace scanning television signal 120 by using storage circuits (scanning line buffer storage circuits) 108-110 and the resulting signal is sent. Then the receiver side converts the signal into a signal of line sequential scanning having a frame frequency being a multiple of (n) of the frame frequency of the television signal 120 to reproduce the picture. That is, the line sequential picture signal is converted into an interlace television signal comprising n-fields by one frame and the receiver side converts the television signal into a line sequential signal having a frequency being a multiple of (n) of the frame frequency of the television signal and reproduces it.