An information communication system has a plurality of nodes connected by both an information transmission bus and a signalling channel. The information transmission bus is used to carry messages between devices attached to the nodes of the network. The signalling channel is used to signal nodes that...http://www.google.com/patents/US6111886?utm_source=gb-gplus-sharePatent US6111886 - Apparatus for and method of communicating among devices interconnected on a bus
