Patent ID: 8914831

Claim:
A communication controller comprising: an output module configured to control output of image information to a display; a transmitter configured to transmit the image information to a first communication device by unicast; and a receiver configured to receive a transmission request of the image information from a second communication device, wherein, if the receiver receives the transmission request from the second communication device, the transmitter transmits a pause request for requesting the first communication device to issue a pause command, if the receiver receives the pause command issued by the first communication device in response to the pause request, the transmitter stops transmission of the image information to the first communication device by unicast, and notifies the first communication device and the second communication device of a single multicast address, and if the receiver receives a play request issued by at least either the first communication device or the second communication device, the transmitter transmits the image information to the multicast address so that the image information is transmitted to the first communication device and the second communication device by multicast.