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1. 发明授权

US3809817A Asynchronous quadriphase communications system and method 失效
标题翻译：异步通信系统与方法
公开(公告)号：US3809817A
公开(公告)日：1974-05-07
申请号：US22582372
申请日：1972-02-14
申请人： AVANTEK
发明人： GILL W , MELLENGER J
IPC分类号： H04J3/14 , H04L5/12 , H04L25/03 , H04L27/227 , H04J3/06
CPC分类号： H04L25/03866 , H04J3/14 , H04L5/12 , H04L27/2275 , Y10T74/217
摘要： A communications system and method for transmitting and receiving two independently timed (asynchronous) binary data signals on a quadriphase carrier. The four phase ambiguity ordinarily resulting from quadriphase transmission and reception is overcome by uniquely identifying each input channel, for example, by scrambling. In reception each channel is demodulated and applied to a corresponding descrambler. The descrambler outputs are sequentially examined to recognize any non-random characteristic of the data signals; recognition indicates connections from the demodulator to the descrambler in the correct sense. If there is no recognition, the connections are reversed and the scrambler outputs are again examined until recognition is achieved thus providing the original binary data signals.
摘要翻译：一种用于在四相载波上发送和接收两个独立定时（异步）二进制数据信号的通信系统和方法。通常由四相传输和接收产生的四相歧义通过唯一地识别每个输入通道来克服，例如通过加扰。在接收中，每个信道被解调并应用于相应的解扰器。依次检查解扰器输出以识别数据信号的任何非随机特性; 识别指示从解调器到解扰器的正确连接。如果没有识别，则连接被反转，并且再次检查加扰器输出，直到获得识别，从而提供原始的二进制数据信号。

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