A system and method for processing a rights expression for association with an item for use in a system for controlling use of the item in accordance with the rights expression. A rights expression is specified in a conventional manner in an original format. An intermediate format of the rights expression...http://www.google.fr/patents/US7359884?utm_source=gb-gplus-shareBrevet US7359884 - Method and apparatus for processing usage rights expressions
Method and apparatus for processing usage rights expressions
