Facsimile transmission apparatus

摘要

A facsimile transmission apparatus comprising a picture signal producing circuit for producing picture signals by scanning a region including the original sheet face of the original sheet of the maximum size in those sheets to be transmitted, circuitry for storing the picture signals produced by the picture signal producing circuit alternately in two memories under the control of clock signals having different frequencies corresponding to the size of the original document and giving a predetermined number of bits for each horizontal scanning line irrespective of the size of the original sheet, and a read-out circuit for reading out the picture signals stored in the two memories for transmission at the rate corresponding to the scanning rate in a receiver side.