BUS MEDIATION METHOD AND BUS MEDIATION SYSTEM DEVICE

PROBLEM TO BE SOLVED: To provide a bus mediation method and a bus mediation system device capable of providing more bus use rights to a device of which the number of times to use the bus is especially large than to other devices in a system constituted by connecting plural devices with the bus. SOLUTION: Characteristic structural technique consisting of continuously implementing a bus use permission signal output processing to successively output bus use permission signals BACK1, BACK2, BACKn to permit the use of the bus 1 to each of devices (EQ1) 21, (EQ2) 22, (EQn) 23 to output bus use request signals BREQ1, BREQ2, BREQn to request use permission of the bus 1 in a prescribed order and a bus use permission signal re-output processing to output the bus use permission signal (for example, BREQ2) to the device (for example, EQ2) 22 using the bus 1 and the device (for example, EQ2) 22 to output a bus mediation stop request signal BASTP again is adopted.