| 摘要 |
PROBLEM TO BE SOLVED: To perform stable data transmission and reception and to improve effective speed of data transmission in a network of PLC (Power Line Communication). SOLUTION: A PLC master machine modem 13 is disposed at the entrance to a floor. An entrance PLC of a bank of game machines is disposed with slave machine modems 30a, 30b, etc., and entrance PLC of a bank of game machines master machine modems 31a, 31b, etc., for narrow bandwidth are disposed at every entrance to an game island. A PLC slave machine modem 9 for narrow bandwidth is disposed every game machine 8. Moreover, the PLC master machine modem 13 is connected to a pre-branching port of a first branching adapter 15 and the slave machine modems 30a and the like are connected to a branched port of the first branching adapter 15, the master machine modems 31a and the like are connected to the slave machine modems 30a and the like with LAN cables, communication line connection ports of the master machine modems 31a, 31b, etc., are connected to a pre-branching port of a second branching adapter 7, and the PLC slave machine modem 9 is connected to the branched port of the second branching adapter 7. COPYRIGHT: (C)2010,JPO&INPIT |
