论文部分内容阅读
目前,中央电视台、四川、浙江、山东等二十多个电视台都开播了图文电视。这些图文电视主要有“图文页信息”和“专业信息”两种播出方式。图文页信息方式将信息内容编辑成一页一页的形式,在屏幕上逐页显示。播出栏目主要有经济简讯、旅游、娱乐、医疗保健、生活指南、供求信息、科技之窗、金融经贸、商情服务、天气预报、消费信息等。专业信息以计算机数据文件形式播出,它的数据容量大,实时性强。内容主要有物资行情、商品供求、科技成果、农业、行业信息、家电、计算机、整车、汽配、房地产、机械以及实时动态的股票期货行情、机场进出港航班等信息。 如何收看这些图文信息呢?一般说来,有以下5种接收
At present, CCTV, Sichuan, Zhejiang, Shandong and other television stations have launched more than 20 teletext. These teletexts mainly include “graphic page information” and “professional information” two broadcast modes. Graphic page information mode The information content is edited into a page by page form, displayed on the screen page by page. Broadcasting columns are the main economic newsletters, tourism, entertainment, health care, life guide, supply and demand information, science and technology window, financial and economic and trade, business services, weather forecast, consumer information. Professional information broadcast in the form of computer data files, its data capacity, real-time. The main contents of the market information, supply and demand of goods, scientific and technological achievements, agriculture, industry information, home appliances, computers, vehicles, auto parts, real estate, machinery and real-time dynamic stock and futures market, airport inbound and outbound flights and other information. How to watch these graphic information? In general, the following five kinds of reception