H - Electricity – 04 – J
Patent
H - Electricity
04
J
363/10, 340/84
H04J 3/02 (2006.01) G06F 13/374 (2006.01)
Patent
CA 1172719
ABSTRACT OF THE DISCLOSURE A distributed structure message switching system uses a multiple random access protocol for data message exchange among processing units of different kinds. Two separate physical lines are used to connect the units, one arranged for data transmission, the other carrying signals solving problems relating to access priority, collision of contempo- raneous messages, and channel assignment, by applying to the service line the addresses of units requiring access to the data transmission line when it is free, and allo- wing that unit having an address whose logic levels pre- vail on the service line over those units competing to acquire the data transmission line.
389178
Chiarottino Volmer
Poggio Cesare
Reali Aldo
Cselt - Centro Studi E. Laboratori Telecommunicazioni S.p.a.
Ridout & Maybee Llp
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