A digital content distribution control method, a digital content reproducing method, and a digital content reproducing apparatus. The digital content distributing side manipulates digital content by encrypting and compressing the same, transmits the manipulated digital content, an encrypted content key,...http://www.google.fr/patents/US7636691?utm_source=gb-gplus-shareBrevet US7636691 - Method of controlling digital content distribution, a method of reproducing digital content, and an apparatus using the same
Method of controlling digital content distribution, a method of reproducing ...
