Digital copyright managing method of distributed television broadcast station and broadcast and television network operator

Abstract

The present invention provides a method for managing the digital publication right by the distributed television broadcast station and the broadcast and television network operator. The method uses the improved conditional access system (CAS) and data encrypting mode and digital signature technique for settling the problem of the digital publication managing of a plurality of television broadcasting stations and a plurality of operators, and at the same time the telecommunication-grade operating mode of the settling method is presented. For realizing the purpose of the invention, the method comprises the following methods: a CA encrypting method which combines the asymmetric encrypting algorithm with the symmetric encrypting algorithm; executing dual authentication by the television broadcast station and the network operator to the program; a method basing on the EMM information router operated with telecommunication grade; and purchasing the program data exchanging by the subscriber between the operator and the television broadcast station basing on the digital signature technique. The invention has the following excellent effects: normalizing the business behavior of the operator, the television broadcast station and the telecommunication operator, protecting the intellectual property, and reducing the commercial dispute.

Description

Technical field [0001] The present invention relates to the technical field of digital television, in particular to a method for implementing copyright management of television stations and radio and television network operators by using an improved distributed conditional access system. Background technique [0002] For the conditional access of digital TV, ETSI respectively promulgated the TS103197 standard of "Simultaneous cipher; Head-end realization" in June 2000, and promulgated the "Simultaneous cipher; Head-end structure and structure" in 1997. "Synchronization" TS101107, December 2002 promulgated the "DVB Simulcrypt Standard Implementation Guide" TR102035; TS103197 was revised in January 2002 and January 2003, and TS101107 was revised in January 2002. These standards and their revised versions completely stipulate the simulcrypt framework for conditional access of an operator or TV station, and the interfaces between digital TV front-end equipment and CAS are regulated t...

AI Technical Summary

Problems solved by technology

[0004] However, the CAS implemented according to these standards can only encrypt the programs of one operator, that is, if other TV stations want to sell digital TV programs to users of this operator through the transmission network of the operator, they must The commercial program is unencrypted, and the operator authorizes the program to the users who have purchased it after encrypting the program, such as figure 1

The disadvantage of this method is that the TV station cannot authorize specific users, and cannot know how many users have watched its programs

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