System for distributing content to a subscriber terminal on demand through a communication network.Method for distributing content from one or more cable systems for subscriber terminals in a cable systems.System for distributing first and second content to a terminal subscriber on demand through a communication network, a method which uses a system of renewal of cryptography, and.Method for distributing content pre encrypted to subscribers from a first and a second communication systems

摘要

"System for distributing content to a subscriber terminal on demand through a communication network.Method for distributing content from one or more cable systems for subscriber terminals in a cable systems.System for distributing first and second content to a terminal subscriber on demand through a communication network, a method which uses a system of renewal of cryptography, and.Method for distributing content pre encrypted to subscribers from a first and a second communication systems ".Method for distributing content from a main terminal end subscribers within one or more cable systems. Such content may be video, audio or the like.The method includes the step of encrypting the content out of line to form the pre encrypted content, generating a record of cryptography which contains parameters used to encrypt the contentu00fado. Based on the record of cryptography, a message control to permit access to the pre encrypted content is generated using a first periodic key provided by the cable system.The pre encrypted content message and associated control are, therefore, provided to the first terminal subscriber for decryption of the content.A second terminal subscriber in a second cable system.The pre encrypted content is reequipped with a second control message that allows the pre encrypted content is decrypted by the second terminal subscriber.In addition, various versions of a text control to various users of the service in a cable system may be generated.Each version to allow access to a line of personal service within the system.