DISTRIBUTED-STRUCTURE MESSAGE SWITCHING SYSTEM ON RANDOM-ACCESS CHANNEL FOR MESSAGE DIALOGUE AMONG PROCESSING UNITS

摘要

Distributed-structure message switching system using a multiple random-access protocol for data message exchange among processing units of different kind.
Two different physical lines are used, one arranged for data transmission, the other designed to solve the problems relating to access priority, to collision of contemporaneous messages, and to data-channel assignment, by means of criteria allowing one logic level to prevail over the other, without resorting to any arbitration logic-unit.