论文部分内容阅读
高性能同轴网络(HINOC,High performance Network Over Coax)是面向下一代广播电视网的同轴电缆接入新技术,是实现模拟电视系统双向数字改造以及广播电视三网融合战略的关键技术之一.HINOC系统中的嵌入式设备HB(HINOC Bridge)与HM(HINOC Modem)需要通过在线升级实现软件版本的不断更新.针对目前一般的软件在线升级系统中普遍存在的整体加密传输效率低、硬件失效缺乏保护等问题,本升级系统设计在文件的传输和文件烧写的基本步骤上引入了文件差分编码解码、文件校验与加密解密以及异常保护机制.实际测试结果显示,升级系统能够满足HINOC系统在效率、安全性和可靠性方面的要求,保证了嵌入式系统的信息安全以及嵌入式设备在异常情况下的稳定工作.
HINOC (High Performance Network Over Coax) is a new coaxial cable access technology for the next generation of broadcast network. It is one of the key technologies to realize the bidirectional digital reconstruction of analog TV system and the triple play of radio and television (HINOC Bridge) and HM (HINOC Modem) need to be continuously upgraded through online upgrade.For the current general software online upgrade system, the overall encryption transmission is inefficient and the hardware is invalid Lack of protection and other issues, the upgrade system design in the basic steps of the file transfer and file burning introduced the file differential encoding and decoding, file verification and encryption and decryption and abnormal protection mechanism.The actual test results show that the upgrade system to meet the HINOC system Requirements in terms of efficiency, safety and reliability ensure the information security of embedded systems and the stability of embedded devices in abnormal situations.