论文部分内容阅读
实现模拟置乱的同步有两种方案,起始型同步与连续同步。有关文献阐述了用数字电路实现上述方案的一般原理。本文深入探讨了在以微处理器为基础的模拟保密机里,怎样尽量利用微机本身的硬件,特别是充分利用软件实现模拟置乱同步的原理。文章共分三部份,第一部份阐述了模拟置乱中同步的基本概念;第二部份详细地讨论了起始型同步的微机实现方案以及起始同步码FSK调制、解调的硬件框图与软件流程;第三部份阐明了连续同步方案微机实现的原理、硬件框图与软件流程。
There are two scenarios to achieve simulation of scramble synchronization, start-type synchronization and continuous synchronization. The literature describes the general principle of using the digital circuit to realize the above scheme. This paper explores how to make best use of the hardware of the microcomputer itself, especially the principle of making full use of software to simulate scrambling and synchronization in the microprocessor-based analog security machine. The article is divided into three parts, the first part explains the basic concepts of synchronization in simulation scrambling. The second part discusses the implementation scheme of initial synchronization and the hardware of initial synchronization code FSK modulation and demodulation Block diagram and software flow. The third part illustrates the principle, hardware block diagram and software flow of the PC.