JPS6450665A - Facsimile transmitter - Google Patents

Abstract

PURPOSE:To shorten the transmission time of an original by simultaneously transmitting picture signals which have simultaneously read both sides of the original and which have simultaneously coded to two lines. CONSTITUTION:If the original 1 is inserted into a transmitter, a main control part 7 sets the original 1 on a read position and instructs all parts of the start of action. A communication control part 6 transmits and receives the control procedure signal of a network connection layer (transmission speed and connection system of a receiver), the control procedure signal of a session layer (information on the size of a document and on errorneous retransmission) and the control procedure signal of a transport layer (the mentioned procedure is prevented from being affected by the kind of a communication network), causes first and second read parts 2 and 3, and first and second data compression parts 4 and 5 to execute operation through the main control part 7 when the picture signals are prepared for transmission, and it simultaneously transmits the first and second picture signals 4b and 5b to the digital two lines 6a and 6b.