In this paper, a method for data protecting of the rigid timing framwork teletext system is presented, and the visualizing scheme for realizing it is given.
本文提出了一种用于固定格式图文电视系统的数据保护方法，并给出了具体实现流程。
Since information is continuously sent into the system as it becomes available, Teletext is always kept up-to-data.
新获得的资料不断地输入，所以电视传真文字系统总是保持最新水平。
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