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 invention relates to the technical field of digital television, in particular to a method for realizing 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 promulgated the TS103197 standard of "Simulcrypt; Head-end Realization" in June 2000, and "Simulcrypt; Head-end (Head-end) Structure and TS101107 of "Synchronization" and TR102035 of "DVB Simulcrypt Standard Implementation Guide" were promulgated in December 2002; TS103197 was revised in January 2002 and January 2003 respectively, and TS101107 was revised in January 2002. These standards and their revisions completely stipulate the simulcryption framework for the conditional access of an operator or TV station, and these standards regulate the interface between digital TV front-end equipment and CAS. [0003] The simulcrypt f...

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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