Also, this paper describes the main control unit and the whole design of the system, and analyzes the encryption principle of the code hopping encoder adopted by this system.
描述了系统主控单元的选择及系统的整体设计，分析了系统所采用滚动编码的加密原理并对滚动编码与固定编码的安全性作了比较。
The hopping code technology is an encryption and decryption technique that data transfer is of high security, and the hopping code mechanism makes each transmission unique.
滚动码技术是一种使数据传输具有极高保密性加解密技术，且每次传输的代码都是唯一的。
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