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本文阐述了利用现有电视网传输附加信息的优点;指出为充分利用信道容量,提高数据率,可在电视行正程期间传输附加信息;提出了附加信号的不可见性和在传送与接收之间达到精确同步以及具有高可靠性的问题;并且给出方框图和一些基本参数及实验结果。从经济的观点来看,利用现有电视网传输数字数据是很引人注目的。本文论述利用这样的通道传输附加数据在理论上和技术上的可行性。
This article describes the advantages of using existing television networks to transmit additional information. It points out that in order to fully utilize the channel capacity and increase the data rate, additional information can be transmitted during the normal operation of the television line. Invisibility of additional signals, To achieve precise synchronization and high reliability problems; and gives the block diagram and some basic parameters and experimental results. From an economic point of view, the use of existing networks to transmit digital data is very compelling. This article discusses the theoretical and technical feasibility of using such channels to transmit additional data.