Crosspoint circuitry for data packet space division switches

摘要

An electronics space-division packet switch is disclosed in which each switch crosspoint includes digital logic capable of resolving simultaneous contentions for the source output buss medium. In particular, a bit-by-bit comparison of priority codes disconnects all switches but the one with the highest priority from the output buss. This extremely simple crosspoint switch structure makes possible extremely large space-division packet switches in very compact physical form, using large scale integration techniques.