In one embodiment, an adapter is configured for coupling to a power line to receive and propagate multiple types of information including voice and video. In general, the adapter comprises (i) a physical layer adapter including a plug for coupling to the power line and logic to support electrical and...http://www.google.com.tw/patents/US20030088706?utm_source=gb-gplus-share專利 US20030088706 - System and method for simultaneously transporting different types of information over a power line
