文档介绍：华中科技大学
硕士学位论文
DVBC接收机EPG系统及EPG增值业务设计实现
姓名:杨建
申请学位级别:硕士
专业:通信与信息系统
指导教师:王宏远
20060501
摘要
目前,传统模拟电视的数字化平移,已经成为电视产业的热点。在有线电视中,
传统模拟信道中的节目形式,已经不能满足人们日益增长的物质精神文化生活需要。
各种数字电视增值业务成为电视产业新的利益增长点。其中,EPG 系统与 EPG 增值
业务,已经在某种程度上改变了人们生活的方式。
本文主要讨论了基于 DVB-C 有线电视数字接收机平台上的 EPG 系统、NVOD 业
务、数据广播业务的接收机端的设计与实现,尤其是对三个业务的核心——解复用部
分进行了详细的介绍。文中首先介绍了数字有线电视的发展历史和现状,及将来的发
展趋势。然后论文介绍了 DVB-C 软件解复用模块设计过程中所涉及的相关标准和关
键技术,尤其介绍了与 EPG 系统开发有关的 EPG 相关标准。
之后详细介绍了基于 DVB-C 平台上的 EPG 解复用模块的体系结构、工作流程,
以及 STi5518 芯片方案对解复用模块开发的支持。本文对 STi5518 芯片方案在解复用
方面的缺陷提出了几种改进方案。本文还介绍了 NVOD 准视频点播业务和数据广播
业务的设计与开发。
在文章最后,对以解复用模块为基础的数字电视增值业务做出了概括说明,并展
望了各种新形式增值业务的技术和市场前景。
关键词: 数字电视机顶盒嵌入式操作系统解复用 EPG NVOD
数据广播

I
Abstract
At present, development of digital TV es the hotpot of the television industry.
Traditional services in the analog cable system can’t meet the increasing demands of
consumers. Various interactive services e a pillar of the whole industry. Especially,
EPG system and EPG increment services have changed people’s life in some respects.
The thesis mainly discusses the design and implementation of EPG system, NVOD
system and data broadcasting system based on the DVB-C platform. Specially, this thesis
pays much attention to the core of DVB-C Set-Top-Box software: demultiplexer. The
developing history of cable digital TV and its current situation and developing trend are
introduced firstly. Then relevant standards and theory technologies are introduced. Specially,
it introduces relevant standards of EPG.
Then the framework of the demultiplexer and its flow chart of EPG system based on
DVB-C are introduced in detail, and the supports of STi5518 platform are discussed. This
thesis discusses the limition of demultiplexer of STi5518 platform, and it brings forward
some methods to solve this problem.
In the end of this thesis, this thesis gives a brief explanation of these hot services based
on the demultiplexer. And it forecasts the technology development and the m