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本文首先简要介绍了福建广播电台目前数字化程度的概况和广播播控中心数字化改造的两种模式(传统模式和网络化模式)。着重分析了CobraNet的MAC数据包结构以及在以太网上同步传输数字音频信号的通信协议,在组网时考虑网络工作负荷和安全性,提出三种网络优化的方法。结合广播实际采用美国DIGISPIDER公司的CAS/CAF音频路由器组建一个完整的网络化、智能化的节目传输与监控系统,系统具有结构简洁、高安全性、高智能化、投资小等特点。
This article first briefly introduces the current status of Fujian Radio digitization and digital broadcasting broadcast control center of the two modes (traditional mode and network mode). Focusing on analyzing the MAC packet structure of CobraNet and the communication protocol for synchronously transmitting digital audio signals over Ethernet, three network optimization methods are proposed considering network workload and security when networking. In combination with broadcasting, a complete networked and intelligent program transmission and monitoring system is constructed by using the CAS / CAF audio router of DIGISPIDER Corporation in the United States. The system has the characteristics of simple structure, high security, high intelligence and small investment.