A multi-star fiber optic network achieves improved access periods by grouping terminal devices into subnetworks that are connected to a bus, with token passing or collision detection being localized to individual subnetworks and with communication between subnetworks being conducted over the bus via...http://www.google.fr/patents/US4654889?utm_source=gb-gplus-shareBrevet US4654889 - Multi-star fiber optic network with improved access time
Multi-star fiber optic network with improved access time