Communications systems

Details Communications systems Communications systems

H - Electricity

04

L

340/84

H04L 12/28 (2006.01) H04L 12/43 (2006.01) H04L 12/54 (2006.01) H04L 12/64 (2006.01)

Patent

CA 1287673

- 25 - ABSTRACT COMMUNICATIONS SYSTEMS A communications network comprises a plurality of stations which can communicate via a ring. Information is transmitted from one station to another in message blocks which circulate around the ring. The message blocks include control bits and a protocol is employed which ensures that no one station can monopolise the available message blocks. At any of the stations, an emptying block is utilised by that station as a reallocation trial slot and places its own address therein for passage round the ring. On its return a system reset is instigated to allow all stations to be reallocated blocks.

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