| 摘要 |
PURPOSE:To attain the same terminal device constitution as outgoing and incoming sides by starting transmission of a radio wave at a different time from each incoming terminal device after the multiple address communication is finished for the outgoing terminal device, sending reply information to a transmission information channel at the incoming terminal device and stopping the transmission of the radio wave at the end of transmission of the reply information. CONSTITUTION:An outgoing terminal device 10 uses an information channel 200 to transmit multiple address information. Since receivers 31, 32,...33 of incoming terminal devices 11, 12...13 are set to the channel 200, the information sent from an outgoing terminal device 10 is received at the same time. After the incoming terminal devices 11, 12,...13 receive the multiple address information, the response for the confirmation is returned to the outgoing terminal device 10 by using an information channel 300. The time when each incoming terminal device completes the reception of multiple address information until the reply signal is sent differs from each incoming terminal device and the signal is not sent at the same time. Thus, number of receivers of the outgoing terminal device for multiple address communication is less and an OR circuit is eliminated and the constitution of the outgoing and incoming terminal devices is made equal. |
