MULTI COMMUNICATION CONTROL CIRCUIT USING REQUEST SIGNAL

摘要

PURPOSE: A multi communication control circuit is provided so that a network can be connected in a 1 to 1 connection type by the request of a main controller or subs in the communication network system which has a 1 to N connection type with regard to the main controller or a N to 1 type with regard to the subs. CONSTITUTION: A plurality of communication connecting parts(121¯12N) connects communication lines between a main controller(11) and transceiving subs(131¯13N) according to a request signal issued in the communication network system. A decoder(14) provides a control signal so as to connect transceiving lines to the communication connecting parts. Accordingly, the only corresponding devices can be driven in a 1 to 1 connection type by a request of the main controller and the subs, thereby reducing power waste of the system and improving the managing efficiency of the communication network.