Data transmission system comprising a plurality of Local Area Networks (LANs) (10-1 to 10-4) interconnected by a hub (12) including the same plurality of LAN adapters (16-1 to 16-4) respectively connected to the LANs and a packet switch (14) comprising at least a packet switch module interconnecting...http://www.google.com.tw/patents/US7130302?utm_source=gb-gplus-share專利 US7130302 - Self-route expandable multi-memory packet switch
