EFFECTIVE SYSTEM FOR GLOBAL SIGNAL

摘要

PURPOSE:To reduce a required communication time by sending a effective signal when the signal outputted from one of plural communication equipments which transmit data in a regulated direction connecting it an annular shape to another communication equipment is returned after one circulation to the original position. CONSTITUTION:The plural communication equipments CE (only one station is shown at a figure) which transmit an information in the regulated direction LR LS are connected with an annular transmission line. Each communication equipment CE is connected with a terminal equipment TE through a transmission/receiving part SR and a receiving terminal R is always connected with a line. A transmission terminal S is connected with the line with a switch SW only when the signal is sent out from own station and except in the above case, lines LR and LS are connected as shown at the figure. When one of the communication equipments sends a global signal to all of the communication equipments, it sends out the effective signal which effectuates the global signal to all other communication equipments by detecting the global transmitted from the own station after the transmission of the global signal. Thus, it is possible to reduce the required communication time as a whole.