Patent ID: 8311235

Claim:
A method of controlling communication in a communication system including a controller that wirelessly transmits multi-channel data to a plurality of communication devices executed in a communication device group, in which the plurality of communication devices are wire-connected, one of the plurality communications devices receiving power supply directly from a power source and each of the other communication devices receiving power supply from another communication device in the communication device group, the method comprising the steps of: determining a temporary master as a communication device from the communication device group that receives power from the power source; determining by the temporary master, in the communication device group, a master communication device that receives the multi-channel data from the controller and sends the received multi-channel data to other communication devices in the communication device group according to wireless connection conditions between the controller and each communication device in the communication device group; and sending, by the master, via the wire-connections the multi-channel data received wirelessly from the controller to the other communication devices in the communication device group.