Method of operating a data bus system with transmitter stations

摘要

A method of operating a data bus system, the data bus system comprising a plurality of stations 10-15, including at least two transmitter stations 11, 12, 15, each transmitter station 11, 12, 15 being switchable to an active mode in which the relevant transmitter station 11, 12, 15 digitally transmits a respective data stream, bus means 17, 18a, 18b which interconnect the stations 10-15 of said plurality, resource control means 11 for controlling which transmitter stations 11, 12, 15 simultaneously operate in the active mode. The method comprises: the resource control means 11 guaranteeing that a sum of the specific transmission capacities required for the own data streams of the transmitter stations 11, 12, 15 simultaneously operating in the active mode does not exceed the available transmission capacity of the bus means 17, 18a, 18b, representing in a code the specific transmission capacity required for the own data stream of at least one of the transmitter stations, the representing in the code comprising taking overhead into account, said at least one of the transmitter stations enabling the reading out, via the bus means, of the code, and the resource control means reading out the code via the bus means and basing the guarantee on the code read out.