PURPOSE: To avoid shear of picture information and a part of erase in a storage exchanger among different types of facsimile devices, by inserting a white picture signal at the transmission of stored picture signals, through the storage of effective picture signals only for the storage of received picture signals.
CONSTITUTION: A transmitted original from a facsimile device is received as a picture signal 12' at a storage exchanger 6. A facsimile control section 8 deletes a picture signal for the length of l3-l1 from the start of reception of the picture signal 12' to set the start point of an effective picture signal 14'. The picture signal 12' is transferred from the said start point to a storage control section 9 and stored in a magnetic disc 10. Thus, only the effective picture signal 14' is stored. On the other hand, in transmitting the effective picture signal 14', a white picture signal having a length corresponding to the l3 is inserted before the effective picture signal 14' and transmission is made in the form of a picture signal 15, allowing to obtain a reception picture signal 16 for the facsimile device.
SHIMIZU SHIYOUGO
ISHITSUKI TAKEO
HIMENO RIYOUICHI
NIPPON TELEGRAPH & TELEPHONE