【作者】 裴志毅；

【导师】 杨兆选；

【作者基本信息】 天津大学 ， 信号与信息处理， 2006， 硕士

【摘要】 数字电视是在电视信号的发射、传输和接收过程中全部实现数字化的电视系统。数字电视的各种突出优点使得数字电视技术得到了迅猛发展,数字电视产业也正在迅速形成。然而,近年来在数字电视的产业化过程中也遇到了很多问题,如整体平移的资金瓶颈,盈利模式尚未成型,现有机顶盒功能简单不利于交互式服务的展开等。与此同时,国际和国内电信运营商和网络服务提供商瞄准了电视行业的巨大市场潜力,大力发展IPTV,并已经在一定范围内推广开来。数字电视的发展受到了IPTV的挑战。如何继续增强数字电视的交互功能,成为数字电视产业化中的一个急需解决的技术问题。本论文通过在Broadcom公司的BCM97115数字电视机顶盒解决方案中实现网络浏览器,为开发数字电视机顶盒的网络功能做出了有益的尝试。BCM97115方案是符合欧洲DVB标准的数字高清晰度电视机顶盒单片方案,它提供10/100M以太网接口。该方案采用嵌入式Linux操作系统,软件开发采用基于分层的框架结构,其上应用程序的开发属于Linux应用程序的开发。本论文提出了一种适合于机顶盒的网络浏览器实现方案。该方案完成了浏览器的结构设计,使用C++完成了网络接口模块、XML解析器和控制部分的程序实现。通过实验反复比较,确定了适合机顶盒应用特点的功能和界面。并且在实践中为今后的工作积累了宝贵的经验和技术基础。更多还原

【Abstract】 Digital Television is the television system that transports, receives, processes, records, and controls TV signals all in digital format. Its outstanding makes itself developing quickly. And also a Digital TV industry is now coming into being. However, many problems occur in the industrializing progress. For example, the interactive service that Digital TV Set-top Box can provide is less than expected now. While at the same time, those large communication enterprises, both domestic and international together with those internet SPs are developing IPTV at a high speed. What’s more, they have already got benefit from that. So working on to enhance the set-top box’s interactive function is of importance and value.This paper implements a web browser on Broadcom’s BCM97115 digital TV set-top box resolution. The successful implementation of the web browser is a try to develop the Set-top box’s network functions. BCM97115 is a single-chip digital TV resolution that supports DVB-C. It provides a 10/100M Ethernet interface. Embedded Linux is its operation system.This paper creatively proposes a way to implement a web browser on the set-top box. The structure of the web browser has been designed. And the net interface, XML parser and the control part are programmed with C++. After a set of experiments and analysis, the web browser’s function and its out-looking are given in the final.更多还原