The invention relates to a communications network (1) comprising a plurality of network nodes (2), which include each a synchronization circuit (5) for generating a global clock signal (GT) from a local clock signal (LT) formed by a clock generator (4) in dependence on a time of reception of a message....http://www.google.com/patents/US6917656?utm_source=gb-gplus-sharePatent US6917656 - Communications network having a time-controlled communication protocol
