To provide an apparatus and method for realizing an improved content preview process in a content using mechanism based on content usage-right information. A client obtains default usage-right information (Default Usage Right) when it is registered to a license server, and determines, based on the default...http://www.google.de/patents/US8090102?utm_source=gb-gplus-sharePatent US8090102 - Information processing device, information processing method, and computer program
