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The Design and Realization of Conditional Access Set-Top-Box Based on Multicrypt Technique

Author: XuJie
Tutor: SuKaiXiong
School: Fuzhou University
Course: Communication and Information System
Keywords: DVB Set-top boxes Conditional How dense Public interface
CLC: TN948.5
Type: Master's thesis
Year: 2005
Downloads: 161
Quote: 1
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Abstract


Conditional Access System ( Conditional Access , CAS ) , its basic aim is to paid services , for operators to bring economic returns , but also to provide users with digital broadcast television systems through the control and management of the user's authorization , more, higher quality services, pay TV, interactive TV technology . Solve different CA systems compatible with each other and fair competition for the CA system is open, the DVB ( Digital Video Broadcasting ) organization with dense and more dense solution . Overall, openness and compatibility of multi - secret technology is the future direction of development of the CA system . In this thesis, after in-depth study of conditional access systems multi - secret technology , according to the DVB - S , DVB - CI standards and the MPEG-2 standard , combined with market requirements and design based on multi - secret technology to receive satellite set-top boxes . The paper first outlines the relevant standards and key technology standard structure of the satellite set-top boxes and multi - density conditions , the composition of the receiving satellite set-top box , and then according to the \just launched a powerful , cost-effective and prominent satellite set-top box solution incidence . Then analysis of the overall design of hardware and software system architecture , focusing on the task-based application layer software development based on a layered software architecture , and is described by the most basic functions of the satellite set-top boxes interaction between tasks relationship , and gives the system's integrated development and debugging environments and system software debugging method . Subsequently, the systematic study of conditional multi- secret technology and DVB-CI standard , given the the public interface module hardware and software design , and highlighted the the CI command interface protocol stack implementation , the method for other embedded systems developed communication protocols have important reference value ; then given the the host segment filter module PSI - related information , and interactive communication through the command interface protocol stack and the CA module resources to complete the decryption of the encrypted program design methods . Finally, given the test results of the system and weaknesses of prospects and trends of the research areas .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > TV > TV and television equipment > Television transmitter and receiver equipment
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