一、前言 当前,电脑(Computer)、通讯(Communication)、家电(Consumer)三大产业正日益融合,形成了“3C”一体化的世界潮流。信息时代来临使“电视机”的概念发生了重大变革。电视机将从传统单一被动接收节目功能扩展到更广泛的信息交流领域:不仅能娱乐消遣还能购物、通讯、获取信息…这就是众所称道的多媒体信息电视。它不仅能够与国际互联网相 I. INTRODUCTION Currently, the three major industries of computer, communication and home appliances are becoming more and more integrated, forming a “3C” integrated world trend. The advent of the information age has brought about a major change in the concept of “television set.” Televisions will extend from the traditional single-passive reception program to a broader area of ​​information exchange: not only for entertainment but also for shopping, communication and access to information ... this is what we call the multimedia information TV. It is not only able to interact with the Internet