Facsimile scanning conversion system

A facsimile scanning conversion system which can convert a facsimile scanning at a transmitter side or a receiver side such that a picture surface received at the receiver is correctly similar to that to be transmitted from the transmitter when either one or both an index of cooperation and a scanning speed of a facsimile transmitter is or are different from that or those of a facsimile receiver, which makes use of a buffer memory having a capacity for memorizing at least one scanning line picture signal and an electrical transmission control device, which can read out one scanning line picture signal from said buffer memory or write in said one scanning line picture signal to said buffer memory with a given period which coincides with a scanning period of corresponding receiver or transmitter for effecting a continuous scanning operation with the aid of said electrical transmission control device, which makes use of an addition register, a scanning control device and a facsimile scanner, which can add a ratio between indexes of cooperation of said transmitter and said receiver to said addition register with said period, can effect when the value of an integer portion of said addition register is not 1 one line scanning operation of said facsimile scanner and can write in one scanning line picture signal to said buffer memory or read out one scanning line picture signal from said buffer memory and subtract 1 from the value of the integer portion of said addition register to repeatedly effect said scanning of said facsimile scanner and said writing in or reading out operation of said buffer memory until the value of the integer portion of said addition register reaches to zero with the aid of said scanning control device.