A content usage device includes (i) a license management unit that holds license information and (ii) a content output unit that uses a content in compliance with license information and outputs the content in at least one manner of a sound, video and data. The license management unit, upon receiving...http://www.google.fr/patents/US7725399?utm_source=gb-gplus-shareBrevet US7725399 - Content usage device and network system, and license information acquisition method
Content usage device and network system, and license information acquisition ...
