一、引言网络电视是以模拟电视为基础而发展起来的。顾名思义,它应该是电视与网络相加的产物。1996年推出的因特网电视(Internet TV)是网络电视的早期形式,它可使观众在电视机上享用因特网。也就是说,通过电视机上网,观众可接收到因特网所提供的服务。近期的网络电视,如NCTV等,已可使观众 I. Introduction Internet TV is based on analog television and developed. As the name suggests, it should be the product of television and the network. The Internet TV, introduced in 1996, is an early form of Internet TV that allows viewers to have Internet access on television. In other words, viewers can receive Internet-provided services through the Internet. Recent Internet TV, such as NCTV, has enabled the audience