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本文公布一种数据传输系统,使标准电话信道能携带比普通脉冲数据速率高。这里所公布的数据压缩器,可用来把两个电平的高速数据变成能用现有电话通信线路处理的多电平低速数据。扩展器用来把多电平低速数据恢复成与原来数据相同的两电平高速数据。
This article unveils a data transmission system that enables standard telephone channels to carry more data than normal burst data rates. The data compressor, disclosed here, can be used to turn two levels of high speed data into multilevel low speed data that can be processed using existing telephone communication lines. Extender is used to restore multi-level low-speed data to the same two-level high-speed data as the original data.