DUPLEX AND DUAL SIGNBOARD SYSTEM CAPABLE OF CONNECTING A PLURALITY OF MAIN CONTROLLERS WITH RESPECT TO ONE SIGNBOARD BASED ON A DUPLEX OR DUAL MODE

摘要

PURPOSE: A duplex and dual signboard system is provided to display data on a signboard without problems although failure is occurred in one main controller.;CONSTITUTION: An operating system(10) writes, stores, and controls signboard data containing displaying contents, displaying orders, and displaying times. A virtual private network(VPN) communication device(20) is in connection with the operating system and transmits the signboard data. A distributor(30) distributes the signboard data transmitted from the VPN communication network device. Main controllers(40, 41) are in connection with the distributor and control a signboard to display the signboard data. A power distribution board(60) supplies power to the signboard.;COPYRIGHT KIPO 2012