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Analysis and Implementation of Some Key Technologies of STB VOD System Based on SPHE IC

Author: ShiXueHui
Tutor: LiChaoZuo
School: Beijing University of Posts and Telecommunications
Course: Software Engineering
Keywords: Set Top Box Bootloader AV Synchronization File System
CLC: TP368.12
Type: Master's thesis
Year: 2010
Downloads: 11
Quote: 0
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Abstract


With the development of science and technology, the power consumption of embedded ICs becomes lower and lower but their frequencies higher and higher, functions richer and richer. In our daily life more and more embedded products can be found, especially digital products, bringing lots of conveniences and fun to us. In recent years, the market sales of embedded VOD (Voice On Demand) products have progressively exceeded traditional PC version products and embedded VOD products have become a new trend in the karaoke VOD system market. So, it has important practical significance to analyze its existing technologies and to track and predict its future.Sunplus SPHE series ICs, which mainly target in the multimedia entertainment market, have already been embedded in many well-known digital products. I’m lucky I have participated in the development of VOD products based on SPHE series ICs, during which I analyzed and solved some technical difficulties, achieved many functions of the platform.. This project mainly develops STB (Set Top Box) VOD products targeting the home market in Taiwan. The STB VOD product we developed supports video data playback of various formats like MPEG1/2, DIVX, MP3 and MIDI, various storage devices like SATA hard disk/CD, SD card and U disk, with multi-language user interface including Chinese, Hakka Chinese, English and Japanese. In terms of user interface, it includes these units:VOD unit, MP3 Favorites, Media Player, Video Favorites, Record unit, etc. With efforts of more than one year, in 2010 this product has already been on sale in Taiwan market.This document discusses technical topics encountered during the development of this product. It mainly includes the contents below:1. Analyze some details that may affect the quality of STB VOD products, in both technical and thinking respects. Collect and analyze some new technologies that may be used in STB VOD system in the future, including high definition video, wireless communication, etc.2. Analyze STB VOD product requirement specification; discuss the system architecture of the product.3. Design the basic flow of Bootloader and implement the code of several key technologies including EXT2/FAT32 file system and TFTP network protocol.4. Analyze the processing of audio and video data and give an emphasis on carrying out the control of AV synchronization when switching Original/Accompaniment.

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