METHOD FOR GENERATING INSTITUTE OF ELECTRICAL AND ELECTRONIC ENGINEERS 1394 VIRTUAL NETWORK AND VIRTUAL NETWORK CONTROLLER

摘要

A method of generating an IEEE 1394 virtual network in which a virtual network is constructed on the IEEE 1394 network and the respective nodes sense the virtual network. The method includes the steps of connecting a virtual network controller for generating a virtual self ID packet including a virtual node ID information required for constructing a virtual network to a predetermined IEEE 1394 network, the respective nodes and the virtual network controller constructing the IEEE 1394 network for determining whether the respective nodes are branches or leaves by performing virtual bus initialization, determining parent ports and child ports with respect to the ports of the respective nodes and a root node by performing a virtual tree identification, and determining the physical node IDs of the respective nodes by sending the prepared virtual self ID packet. A controller for generating the virtual network is also provided. According to the present invention, it is possible to arbitrarily set a node ID on a network. It is also possible to physically sense and operate a virtual network. When different (independently initialised) IEEE 1394 networks are connected by a certain medium, the respective nodes sense that the IEEE 1394 networks are in the same virtual network.