【作者】 蒲海铭；

【导师】 荆涛；

【作者基本信息】 北京交通大学 ， 通信与信息系统， 2007， 硕士

【摘要】 数字电视融合了通信、计算机、信息处理等技术，是未来电视发展的方向。在数字电视中，地面广播数字电视由于其信道情况复杂，在应用上又要求具有移动接收功能，因而成为最复杂的系统，对技术的要求也最高。地面广播数字电视终端设备的研究开发成为了当前的热点。USB总线由于其优异的性能，被广泛应用于各种信息终端。因此，采用USB接口的地面广播数字电视接收设备将具有广阔的市场前景。本文完成了一个基于欧洲数字电视标准DVB-T的USB数字电视接收卡驱动程序的设计与具体实现。论文中首先概述了数字电视的基本情况以及涉及到的DVB数字电视标准，然后介绍了DVB-T标准的核心技术OFDM、USB总线接口技术和Windows CE操作系统，并详细分析了DVB-T的基本结构和Windows CE系统下USB驱动程序的结构。在介绍了上述原理和技术的基础上，论文详细说明了接收卡驱动程序的设计和实现。首先介绍了USB接口作为输出接口的硬件平台；接着重点讲述了接收卡驱动程序的编写和接收功能的具体实现；最后对驱动程序进行测试，接收卡实现了对DVB-T信号的接收和解调，并通过USB接口输出MPEG-2传输流。更多还原

【Abstract】 Digital TV is the trend of TV development; it integrates technologies such as communication, computer, information processing and so on. Due to the complex channel and requirement for portable reception in application, digital terrestrial TV is the most complex system and the highest technical requirement. Development and research of digital terrestrial TV have been becoming a hotspot. USB bus is applied widely in various information terminals. So, the receiving device with USB interface of terrestrial TV would have broad market prospects.This paper mainly introduces the design and implementation of digital TV receiving card with USB interface based on DVB-T. Firstly, the paper summarizes the basic status of digital TV and DVB standard. Secondly, it introduce OFDM witch is core technology of DVB-T, USB standard and Windows CE. Thirdly, it analyzes the basic structure of DVB-T and the structure of USB driver under Windows CE.Based on the introduction of the theories and technologies above, this paper describes the design and implementation of the receiving card in detail. The paper introduces the hardware platform which uses USB as output interface; and then it emphasizes the programming of the driver and the implementation of receiving function. After validation, the receiving card has implemented the receiving and demodulating of DVB-T signal and can output MPEG-2 TS by USB interface.更多还原