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Shared digital television condition receiving system capable of preventing CW diffusion and the method

A conditional access system, digital TV technology, applied in the direction of analog security/charging system, etc., can solve security loopholes, security risks and other problems, to solve security defects, avoid the effect of proliferation and sharing

Active Publication Date: 2010-06-02
SHANDONG TAIXIN ELECTRONICS CO LTD
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Problems solved by technology

[0012] The purpose of the present invention is to solve the problems of security loopholes and potential safety hazards in the conditional access system currently in use, and to provide a conditional access system without changing the hardware structure of the conditional access terminal to replace the existing card conditional access system. Digital TV Conditional Access System and Receiving Method for Preventing CW Diffusion Sharing from Solving CW Diffusion Sharing

Method used

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  • Shared digital television condition receiving system capable of preventing CW diffusion and the method
  • Shared digital television condition receiving system capable of preventing CW diffusion and the method
  • Shared digital television condition receiving system capable of preventing CW diffusion and the method

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0038] figure 1Among them, the front end 1 of the card-with-card conditional access system is the CA server installed with the original card-with-card conditional access system, which follows the DVB organization conditional access system specification; the front-end 2 of the no-card conditional access system is the CA server installed with the no-card conditional access system The server and the cardless conditional access system follow the DVB organization's conditional access system specification; the scrambling device 3 supports not only the DVB organization's general scrambling specification, but also the generation of different control words for the front end of both the cardless and cardless conditional access systems. , the control word generated by the conditional access system with card is mainly used to identify the legitimacy of the receivin...

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Abstract

The invention discloses a conditional access system with CW diffusion sharing prevention for digital televisions and an access method thereof. The invention can substitute the prior conditional accesssystem with a card under the condition of not changing a hardware structure of a conditional access terminal to overcome the defect of the safety of the prior conditional access system with the card.A structure of the conditional access system comprises a front end of the conditional access system with the card and a front end of a non-card conditional access system, wherein the front end of theconditional access system with the card only verifies the validity of the conditional access terminal, and the front end of the non-card conditional access system performs descrambling control of programs after the front end of the conditional access system with the card verifies the validity of the conditional access terminal; the front end of the conditional access system with the card and thefront end of the non-card conditional access system are connected with scrambling equipment, the scrambling equipment is connected with a multiplexer and a modulator, and the modulator is connected with the conditional access terminal.

Description

technical field [0001] The invention relates to a conditional access system and method for encrypting and protecting digital audio, video and data in the field of digital television (including cable, satellite, and terrestrial) and the field of mobile multimedia, and provides a conditional access system that can be replaced without changing the terminal hardware structure. The original conditional access system prevents CW proliferation and shares digital TV conditional access system and receiving method thereof. Background technique: [0002] Conditional Access System (Conditional Access System) is a system used to control digital TV users to use digital TV services. It ensures that users can only use authorized digital TV services (including audio, video, data, etc.). Its basic purpose is that the operator performs authorization control and authorization management on users in the digital TV system, so as to realize the paid service of the digital TV system. [0003] In t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/16
Inventor 陶圣华
Owner SHANDONG TAIXIN ELECTRONICS CO LTD
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