A media server for use in networks where media are transmitted in packet form comprises at least one card shelf containing at least one bus controller card, at least one other card such as a media processor card, and a backplane. The backplane includes a media bus group. Each packet has a routing header...http://www.google.com.hk/patents/US7467179?utm_source=gb-gplus-share專利 US7467179 - Backplane architecture for a data server
