Patent ID: 8139568

Claim:
A communication method using a plurality of communication devices and a relaying device that relays data transferred among the communication devices, a communication device transmitting to the relaying device a transmission right request for requesting a transmission right, which is one of commands associated with the transmission right of the communication device and transmitting data to the relaying device when the communication device is granted a transmission right by the relaying device, and the relaying device broadcasting the data received from the communication device to other of the communication devices, the communication method comprising: transmitting from the communication device to the relaying device a transmission right grant request for requesting a grant of a transmission right of a transmitting device, which is one of commands associated with the transmitting device that communicates with the relaying device; determining, at the relaying device, whether the transmission right grant request is a command associated with the transmission right of the communication device of a transmission source or the transmission right grant request is a command associated with the transmitting device; granting, at the relaying device, the transmission right to the transmitting device based on the command, if the relaying device determines that the command is associated with the transmitting device; and broadcasting data transmitted from the transmitting device to the communication devices via the relaying device.