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The Research and Implementation of Relevant Software on a New Generation Digital Television

Author: DongBo
Tutor: GuoChengMing
School: Tianjin University
Course: Signal and Information Processing
Keywords: Digital TV ATSC DVB EPG
CLC: TP311.52
Type: Master's thesis
Year: 2007
Downloads: 88
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Abstract


In our digital TV programs have been broadcast in many cities, gradually the masses to understand and accept. Although the transition of analog TV to digital TV, digital TV set-top boxes has played an important role, but as a transitional product, it is bound to be a digital TV one machine to replace. Therefore compatible with analog TV to receive digital TV one machine has very important practical significance for the development of China's digital TV industry development in digital television has begun to spread. The preparatory work of the subject is based on the ST program (STi5514 STi7020) with PVR (Personal Video Recorder) functions and conditional interface on the TV set-top boxes of the new generation of digital high-definition degree completion. The main work of this part of the research and the realization of the set-top box software include: the front control software, demultiplexing software program management software, DVI interface module software E2PROM storage module software, hard disk module software. DVI interface through the completion of the control of the external Silicon Image's DVI interface chip, E2PROM storage memory to complete the set-top box state hard disk module completed the recording and playback capabilities of the program. The main part of this project is based on the BROADCOM digital TV and analog TV reception and processing of a new generation of set one SOC chip, developed a set of software and hardware system that is compatible with ATSC, DVB-C and analog TV reception. In this thesis, the EPG software modules, the EPG module contains the ATSC EPG modules and the DVB-C. ATSC EPG module tasks include: extract a list of programs and information stored in the database MGT table to determine which version of PSIP table updates and processing changes and notify other software modules, according to the stream in the analysis of the current time set the system time, obtained from analysis of the current V-CHIP program and notify the V-CHIP control module. DVB-C EPG module tasks include: extraction program list information and stores the information into the database, in accordance with the code stream analysis to set the system time of the current time. In addition, the article also on the Section data extraction module introduction. Section data extraction module is developed in order to improve the collection rate of the EPG data. It allows the upper program multiple Section data request, and it also has a time-out mechanism, to facilitate the the upper application's development. During the thesis work, and the the actual complex under the conditions of the rigorous testing under the experimental conditions, the software part of this thesis, completed the required functionality, verify the correctness of the design of the program, in full compliance with the development requirements.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer software > Program design,software engineering > Software Engineering > Software Development
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