Abstract: The present invention provides a receiving system, for a facsimile system wherein when a large portion of a scanning line of an original pattern consists of only black (or only white), that portion is not transmitted in order to reduce the transmission time. The received facsimile signal has three families, synchronizing signals, group weight indicator signals and picture signals.

Abstract: In scanning an original picture, if a large portion of a scanning line consists of only white (or only black), that portion is not transmitted. Thus, the transmitting time of a picture can be reduced. The facsimile signal consists of a synchronizing signal, a group weight indicator signal and an image signal. The image signals for each scanning line are applied only once to an operational treating circuit, so as to immediately evaluate the image signals for producing group weight indicator signals and the picture signals and for storing the signals thus produced in corresponding storing means. The synchronizing signals are stored separately in a storing means, so as to be read out from the storing means and delivered to a transmission circuit, whereby, said signal arrays are continuously read from the storing means and successively delivered to the transmission circuit.