In a network system for transmitting and receiving contents with one or more pieces of additional information corresponding to an internal attribute of the contents, a contents server can decide the data to be transmitted without regard to a division transfer method supposed for a contents receiving...http://www.google.ca/patents/US7539292?utm_source=gb-gplus-sharePatent US7539292 - Contents distribution system, contents server, contents receiving apparatus, contents distribution method, program and storage media
