To provide a ring/bus converting device for switching a signal between an input and an output.

First, a signal is received by plural inputs. The respective inputs are coupled to demodulators 130-134. The respective demodulators are coupled to communication rings 151-160 coupled to a bridge 190 in order. The signal received by the input is demodulated by the demodulator and next sent through the communication ring to the bridge. The bridge relays the signal to a communication bus and the communication bus further relays the signal to output processors 170-175. The respective output processors receive the signals addressed to themselves and stores them in memory queues. These signals are further outputted in the order of incoming or in the other order based on a priority signal.