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图文电视是一种实用价值很高的电视多工广播方式,它充分利用现有电视覆盖网,将图文信息以数字形式叠加在电视场逆程中进行传输,只要能收看到电视的地方,都可以通过附加在普通电视机里的图文电视解码器看到电视台播发的各类图文信息。图文电视的内容十分广泛,包括新闻、金融、股市、期货、商业、交通、物资供求、生活服务等方面的信息。图文电视不仅覆盖面广、信息量大、传送速度快,而且可以随时由用户自己根据图
Teletext is a practical and valuable television multiplex broadcasting method. It makes full use of the existing television coverage network, and superimposes the graphic and text information in digital form on the reverse of the television field for transmission as long as the place where the television can be watched , Can be attached to the TV in the ordinary TV decoder to see all kinds of television broadcast television messages. Teletext covers a wide range of topics including news, finance, stock markets, futures, commerce, transportation, supply and demand of materials and living services. Teletext not only covers a wide range of large amount of information, transfer speed, but also at any time by the user according to the figure