Network bus system with ring topology - transmits and receives data on three lines and has memory decoder and data receiver at each network node

摘要

The network bus system transmits data on three lines (4,5,6) in parallel. The data are also received on three lines, and the data on the three lines are compared to determine transmission time differences and line length differences. The data are compared at each network node (3,3',3'',3''') even if the data are not meant for those nodes. Each node has an individual address and is an independent system component. A synchronisation signal is included at the start of each data stream. Each node has a receiver (7,8,9) for each of the 3 leads, a memory (10,11,12) and a decoder (14). The receivers, after detecting the synchronisation signals, store the data and then read them after a fixed time period. ADVANTAGE - Errors localised, so that other parts of network can continue to function in event of failure of line as well as one or more nodes.