数字电视前端播出系统节目信源自动切换方案

Scheme of Program Signal Automatic Switching System in DVB

数字电视DVB前端播出系统都在关键环节设置相应的切换保护装置。在实际工作中各级切换保护存在信源调度不简洁、系统逻辑不清晰等情况,导致出现故障和应急处理过度依赖机房播控人员。为了提高安全播出要求,满足秒级播出保障需求,提高用户收视体验,同时紧紧围绕国家广播电视总局“不间断、高质量、既经济、又安全”12字方针,设计实施数字电视前端播出系统节目信源自动切换方案,希望该方案能够实现更简洁更清晰的节目信号调度。

Digital TV DVB front-end broadcasting systems are equipped with corresponding switching protection devices in key links.In actual work,switching protection at all levels has problems such as unsuccinct source scheduling and unclear system logic,resulting in excessive reliance on broadcast control personnel in the computer room for failure and emergency handling.To improve the safety broadcast requirements,meet the second-level broadcast guarantee requirements,and improve the user's viewing experience,at the same time,the digital TV front-end is designed and implemented closely around the 12-character policy of“uninterrupted,high-quality,economical and safe”of the State Administration of Radio and Television.A scheme for automatic switching of program information sources in the broadcasting system.It is hoped that this scheme can achieve more concise and clearer scheduling of program signals.