| 摘要 |
PURPOSE:To attain a remote control system for room electric equipments in a hotel etc., by effectively using the private line equipped therein by dividing a transmitting frequency band into a sound signal band and control signal band and simultaneously transmitting both bands. CONSTITUTION:A computer 10 arranged in a room is connected to outdoor control devices 14, 15 by a communication control equipment 13 and a telephone set 17 arranged in the room is connected to a public line 21 through the equipment 13. Since the equipment 13 has a filter for dividing a frequency band into a sound signal band and the band of an I/O signal (control signal) for the computer 10, the telephone line in the station yard goes a multiplex signal transmission mode. Consequently, the telephone set 17 can be used while transferring information between the computer 10 in the room and the outdoor control devices 14, 15. |
