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System and method for receiving digital television condition capable of preventing CW diffusion share

A conditional access system and digital TV technology, applied in the direction of analog confidentiality/charging system, etc., can solve problems such as security loopholes and hidden dangers, and achieve the effect of solving security defects and avoiding diffusion and sharing

Active Publication Date: 2009-05-27
SHANDONG TAIXIN ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

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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  • System and method for receiving digital television condition capable of preventing CW diffusion share
  • System and method for receiving digital television condition capable of preventing CW diffusion share
  • System and method for receiving digital television condition capable of preventing CW diffusion share

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Embodiment Construction

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

[0038]In Fig. 1, the front end 1 of the CA system with a card is the CA server installed with the CA system with the original CA system, which follows the DVB organization CA system specification; the front end 2 of the CA system without a card is the CA server installed with the CA system without a card The CA server, the cardless conditional access system follows the DVB organization's conditional access system specification; the scrambling device 3 not only supports the DVB organization's general scrambling specification, but also supports the generation of different control words for the front end of the cardless and cardless conditional access system , wherein the control word generated by the conditional access system with card is mainly used to identify the legitimacy of the receiving terminal, and the control word generated by the conditional acc...

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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 access system 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 the conditional 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 the front 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 Applications(China)
IPC IPC(8): H04N7/16
Inventor 陶圣华
Owner SHANDONG TAIXIN ELECTRONICS CO LTD
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