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当前,EPG节目预告信息最常用的即时更新前端解决方案,是在播出网内部署EPG自动更新设备,运用安全单工传输、哈希加密、VPN等一系列技术手段,以确保播出系统网络安全并及时对节目条目予以过滤、筛选,再通过可靠的传输信道上传发布。相比传统处理方式,该方案的效率和准确性均有显著提高,但其也存在一些不足有待完善。本文从提升系统健壮性,改进应对临时变化的响应能力,及增强播出机构控制权限等角度出发,对前端系统的技术改造和升级展开了探讨。并结合江苏台初步升级串行单向EPG数据传送器等软硬件设施后实际测试的效果及相关技术分析,对未来的研发和应用加以展望。
At present, the most commonly used instant update front-end solution for EPG program announcements is to deploy EPG automatic update equipment in the broadcast network and use a series of technical means such as secure simplex transmission, hashed encryption, and VPN to ensure that the system network Safe and timely screening of the program entries, screening, and then upload through a reliable transmission channel release. Compared with the traditional processing methods, the efficiency and accuracy of the program are significantly improved, but there are some shortcomings to be improved. This article explores the technological transformation and upgrading of the front-end system from the viewpoints of enhancing the robustness of the system, improving the response to temporary changes, and enhancing the control authority of the broadcasters. Combined with the actual test results and related technical analysis after the initial upgrade of the software and hardware facilities such as the serial unidirectional EPG data transmitter in Jiangsu and Taiwan, the future development and application are prospected.