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图文电视是一种电视高科技产物,它利用现有的电视广播网,把文字和图形信息以数字信号的形式叠加在电视信号场逆程中,可以廉价地实现点对面,单向传输大量的数据信息。它自七十年代初在英国闯世后,发展迅速,目前已在近四十个国家和地区得到实际应用。我国的图文电视事业起步晚,发展快,现有二十多个省市电视台开播图文电视节目。浙江电视台、浙江电视发展总公司专门成立了浙江图文电视公司,从事图文电视信息的开发和服务,在经过三个月紧张筹备后,率先把图文电视推向
Teletext is a television high-tech product that makes use of the existing television broadcasting network to superimpose text and graphic information in the form of digital signals on the reverse of the television signal field, enabling point-to-point and one-way transmission at low cost Data information. It has developed rapidly since its entry into the United Kingdom in the early 1970s and has now been put to practical use in nearly 40 countries and regions. The teletext business in our country started late and developed rapidly. The television stations in more than 20 provinces and cities now launch teletext programs. Zhejiang Television Station and Zhejiang Television Development Corporation set up Zhejiang Teletext Company to engage in the development and service of Teletext information. After three months of intense preparations, Telecommunication took the lead in pushing teletext