| 摘要 |
PURPOSE:To lessen the load of the terminal and thus to increase the transmission efficiency by requesting the interruption to the remote master communication station via the interruption signal transmission channel every time the communication request is given at the subordinate communication station. CONSTITUTION:Interruption signal transmission channel A and data transmission channel B are set previously between master communication station 30 and the partner subordinate communication stations 31-33. Here, in case the communication request takes place at station 31, IT is transmitted by the interruption signal via channel A to be received at station 30. And if the request can be accepted, interruption reception signal ITR is transmitted via channel A, and at the same time signal SOH indicating the control information for the communication start is transmitted through channel B. Thus, station 31 receives signal SOH and has communication with station 30 via channel B. In this way, the load of the terminal can be lessened, thus increasing the transmission efficiency. |
