VIDEO SIGNAL TRANSMISSION/RECEPTION SYSTEM

摘要

In a video signal transmission/reception system by interlace scanning, video signals obtained by sequential scanning are sent to filters (3a), (3b) and (3c) for limiting their vertical frequency range to produce a video signal for interlace scanning. This video signal is sent to a filter (13) to produce a signal having a predetermined vertical frequency band in order to detect the motion of an object.