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Charging method and device and system for digital multimedia broadcast system

A multimedia broadcasting and digital technology, applied in the field of communication, can solve the problem of single charging method

Active Publication Date: 2009-09-23
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] The present invention aims at the shortcoming of single charging mode of the existing CA system, and provides a charging method, device and system of the digital multimedia broadcasting system, thereby realizing flexible charging of the digital multimedia broadcasting system

Method used

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  • Charging method and device and system for digital multimedia broadcast system
  • Charging method and device and system for digital multimedia broadcast system
  • Charging method and device and system for digital multimedia broadcast system

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Embodiment Construction

[0084] The present invention mainly encrypts the price information of the program by using SK to encrypt the CW, forms ECM information from the encrypted CW, program price information and business data, and then transmits the ECM information to the smart card at the receiving end to achieve To achieve the purpose of flexible billing.

[0085] In order to realize the terminal billing function, the present invention encrypts the price information of the program, such as the price information of real-time billing and / or the price information of billing by program, thereby preventing the user from maliciously tampering with the price information, and watching for free or at a low price The act of viewing a program. Since the present invention encrypts the key factor used by the operator for billing, i.e. the program price, the user will not be easily exposed to this type of information, and the operator can implement flexible billing such as real-time billing and monthly billing f...

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Abstract

The present invention relates to a billing method, device and system of a digital multimedia broadcasting system. The present invention mainly includes: using SK (service key) to encrypt CW (control word) and program price information, and the encrypted CW and program The price information forms ECM (Entitlement Control Information); and transmits the ECM to the user terminal; decrypts the ECM at the user terminal, and performs billing according to the program price information obtained through decryption. On the basis of existing CW encryption, the invention also encrypts price information and recharge information through SK and PDK, so as to realize the real-time billing function for users to watch programs. The implementation of the present invention can provide operators with diversified billing methods, and contributes to the flexibility of the operators in developing services.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a charging method, device and system for a digital multimedia broadcasting system. Background technique [0002] Digital multimedia broadcasting, such as digital TV, mobile video broadcasting, etc., is more and more popular with the public because it can provide timely digital multimedia services, so it is also concerned by operators. Among them, the billing problem of the digital multimedia system is a problem that operators are more concerned about. [0003] At present, digital multimedia systems are mostly based on a CA system (Conditional Access System, conditional access system) to implement billing at the server end. Described CA system comprises front-end CA system, set-top box CA core and smart card (also be called IC card, Smart card or CA card) three parts, is the important component part of digital multimedia broadcasting, completes system program scrambling, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04H60/21H04H60/23H04L12/14H04L9/32
Inventor 吕林军姚辉
Owner HUAWEI TECH CO LTD