随着数字化时代的到来，作为大众传媒的电视业将受到冲击，传统的模拟电视要在数字化的媒体中继续生存下去，已越来越显得力不从心。据美国的最新资料表明，近来，美国公众在因特网上的浏览时间已超过了电视的收看时间，传统电视业正面临着极大的挑战。在这种背景下，交互式电 With the advent of the digital age, the television industry as a mass media will be undermined, and the traditional analogue TV will continue to survive in the digital media. It has become more and more powerless. According to the latest U.S. data, the recent public viewing time on the Internet in the United States has exceeded the viewing time of the television. The traditional television industry is facing great challenges. In this context, interactive electricity