A media device (812) for tracking usage of content distributed to media devices (806-812) of a local area network (802). A memory (906) of the media device (812) stores a content usage counter (918) associated with media content (816) of the media device (812). The transceiver (902) of the media device...http://www.google.com.tw/patents/US20070110012?utm_source=gb-gplus-share專利 US20070110012 - Device and method for tracking usage of content distributed to media devices of a local area network
