The digital contents illegality where where it has digital contents illegitimate use prevention manner and its execution system and the media

摘要

PROBLEM TO BE SOLVED: To provide techniques by which unauthorized use of digital contents inside various centers and shops is prevented.;SOLUTION: In the method for preventing unauthorized use of the digital contents which prevents the unauthorized use of the digital contents, the digital contents have steps: of setting state information to control a reproduction processing of the digital contents and controlling the reproduction processing of the digital contents according to a value of the set state information.;COPYRIGHT: (C)2006,JPO&NCIPI