A contents provider stores contents data in a container in a format which can only be decoded with a key distributed from an EMD service center, and transmits the container to a service provider. The service provider adds pricing information and the like and distributes this to a user home network. The...http://www.google.fr/patents/US6859790?utm_source=gb-gplus-shareBrevet US6859790 - Data distribution system and method thereof, data processing device, data control device, and machine-readable recording medium recording distribution data
Data distribution system and method thereof, data processing device, data ...
