公开(公告)号：US4369333A

公开(公告)日：1983-01-18

申请号：US175370

申请日：1980-08-05

申请人： Bruno Gemperle ,  Oskar Sturzinger

发明人： Bruno Gemperle ,  Oskar Sturzinger

IPC分类号： G09C1/00 ,  H04L9/06 ,  H04L9/18 ,  H04L9/02

CPC分类号： H04L9/065

摘要： Plain text or information which is to be processed at the transmitter end of the system is formed by groups of plain text or information signals which are separated by separation signals. In the absence of plain information signals there are inserted fill signals between the plain information signal groups, these fill signals likewise being separated by separation signals. At the transmitter end there are enciphered, apart from the plain information signals and possibly the fill signals, all or a part of the separation signals. The signal flow which appears at the transmission path no longer is divided in a clearly recognizable manner into individual packets. In order to render possible at the receiver end of the system separation of information signals and fill signals which are insignificant as to their information content, during the course of the transmitter end enciphering the separation signals between the fill signals are provided with an appropriate characteristic or recognition information.

摘要翻译： 要在系统的发射机端处理的纯文本或信息由明文或由分离信号分离的信息信号组组成。 在没有平坦信息信号的情况下，在平坦信息信号组之间插入填充信号，这些填充信号同样被分离信号分离。 在发射机端，除了明信息信号和可能的填充信号之外，还有所有或部分分离信号被加密。 出现在传输路径上的信号流不再以清晰可识别的方式划分成各个分组。 为了在系统的接收端实现对信息信号的分离和与其信息内容无关的填充信号的可能性，在发送端的加密过程中，填充信号之间的分离信号被提供有适当的特性或 识别信息。