| 摘要 |
PURPOSE: To provide an equipment which transmits data packets of periods equal to one another from plural substations to a main station through one ore more transmission channels. CONSTITUTION: A main station 8 consists of a transmission means, which transmits a synchronizing signal indicating the start of a frame to each transmission channel, and a programmable memory means 18 where a maximum link construction time and a non-construction time are stored, and each substation 9 consists of a programmable memory means 15 where these maximum link construction time and non-construction time are stored, a means which subdivides a frame to many sequential time slots of a period at least equal to the sum of periods of stored times of a data packet and its transmission channel, and a means which transmits the data packet within the period of a selected time slot, and this period starts at the time equal to the maximum link construction time after the start and ends at the time equal to the non- construction time before the end. |
