A new class of packet-switched extended generalized-shuffle self-routing multistage interconnection networks provides a continuous performance-cost tradeoff between, on the one hand, the knockout switch or buffered crossbar and, on the other hand, the tandem banyan network. Multiple copies of the new...http://www.google.com.hk/patents/US5541914?utm_source=gb-gplus-share專利 US5541914 - Packet-switched self-routing multistage interconnection network having contention-free fanout, low-loss routing, and fanin buffering to efficiently realize arbitrarily low packet loss