An optical network system having a ring-type network, a bus-type network, and a plurality of stations connecting the ring-type network to the bus-type network. Each station has a plurality of internal buses, and a plurality of transmission-reception processing stations each corresponding to the internal...http://www.google.es/patents/US5117419?utm_source=gb-gplus-sharePatente US5117419 - System for controlling data transmission and reception in a network
System for controlling data transmission and reception in a network
