Disclosed is an original contents creation apparatus realizing a protection of original contents and derived contents in a derived contents distribution by any number of secondary providers. An original contents creation apparatus includes a limitation rule acquisition unit for acquiring a limitation...http://www.google.ca/patents/US7725876?utm_source=gb-gplus-sharePatent US7725876 - Original contents creation apparatus, derived contents creation apparatus, derived contents using apparatus, original contents creation method, derived contents creation method, and derived contents using method and verification method
