Copyrighted electronic media are packaged in a secure electronic format, and registered on associated registration server, which serves to provide on-line licensing and copyright management for that media. Users are connected to the server, e.g., through a computer network or the Internet, to enable...http://www.google.fr/patents/US6807534?utm_source=gb-gplus-shareBrevet US6807534 - System and method for managing copyrighted electronic media
System and method for managing copyrighted electronic media
