A virtual channel system for a web appliance includes an interactive television having a virtual channel memory disposed therein. The virtual channel memory includes data associated with at least one consumer selectable virtual channel. The data is an updatable Web page that is displayed when its associated...http://www.google.com.hk/patents/US7406704?utm_source=gb-gplus-share專利 US7406704 - Virtual channel system for web appliance, including interactive television
