摘要:
When the operator pushes a switching button provided on a controller, a local communication station selects a remote communication station in accordance with a predetermined order, and in the remote communication station, a device is selected in accordance with a predetermined order. When the operator pushes the switching button provided on the controller again, a message that switching to all devices in the remote communication station has been completed is transmitted to the local communication station, and in accordance with the foregoing order, a remote communication station, which is a remote communication station to be selected next, is selected. In the remote communication station concerned, a device is selected in the same manner in accordance with a predetermined order. With this arrangement, it is possible to easily select a desired content even if contents such as devices are located at a plurality of stations in a dispersed manner.
摘要:
To transmit a packet to be transmitted, a transmitting station specifies information indicating an expiration time for the packet. Upon receiving the packet, a receiving station analyzes the expiration time information to output data to the upper layer based on the information. This enables more efficient transmission while following the Strict Order, in a transmission/receipt system where realtime data is transfer using a collective DELAYED-ACK returned instead of ACKs for multiple packets.