| 摘要 |
PURPOSE:To perform communication control without collision, without providing a carrier detector at each communication point, by providing a means giving the right of communication to the next party if no communication request of itself is present at each communication point of after the execution of the communication of itself. CONSTITUTION:A plurality of communication points 11-1n are connected to a signal distributor 2 with a communication path 3, and the points 11-1n are provided with a sequence control section 50, an information processing control section 51, a transmitter 52, a receiver 53 and a coupler 54, and input information 55 is inputted to the control section 51 and output information 56 is outputted from the section 51. Communication right transfer information 60 used for the transfer of communication right for this communication system is provided with synchronizing information 61, communication right information 62, and information 63 for the content of transfer of communication right. If the communication points 11-1n have no communication request of itself, the information to transfer the right of communication to the next position set in the section 50 is transmitted, and if the communication request is present in itself, the right of communication is transferred to the next party after the end of execution of desired communication. |
