数字电视主备信号源中软热备的实现

摘要

广电前端以往采用的信号热备份方式一般都是以硬件备份为主,通过信号多选一设备或者矩阵进行信号切换和调度。随着TS OVER IP的广泛应用,采用了复用器的＂Service Backup＂软交换热备份功能,直接在复用器内部实现主备信号源的自动切换功能,有效地提高了主备信号切换的效率,并且能实现点对点的节目替播功能。%Radio signals,used in the front in the past,are generally hot backup mode to back up the hardware-based,multiple choice by the signal matrix of a device or signal switching and scheduling.With the wide application of TS over IP,using a multiplexer ＂Servic