Digital TV Signal Monitoring System Design And Implementation

Since 2009, digital cable TV 2 years in a row growth of more than 20 million subscribers, cable digital conversion into a rapid development period. With the advent of the era of triple play at the same time, radio and television industry is faced with both opportunities and challenges. Especially for radio, film and television cable networks, how to get the initiative in the new situation of competition, will be a radio and television operators need to consider for a long time. Along with the advancement of the development trend at the same time, the three gradual fusion network, digital TV business support platform is complicated and diversified, the monitoring system itself also faces a bigger challenge, make the existing monitoring system and monitoring plan in the new application environment has some overwhelmed, to improve the monitoring system is imminent. This article introduces the general flow of digital monitoring system development based on digital signal monitoring, to implement the monitoring of the digital signal.Paper studied the rf signal receiving, receiving, ASI network TS stream analysis, MPEG decoding, image processing, image analysis, digital audio listening level, the center of the network management server as a whole DVB multi-channel comprehensive monitoring system, at the same time, this thesis focuses on the channel code flow monitoring. Through the front-end software configuration, both from the data access to the analysis of the data submitted to the Daemon software, and finally submitted to the Server, through this system can be broadly monitoring of DVB system, implement active report, fault analysis, fault fault record, automatic alarm, etc. The user can through Ethernet to realize the remote control, in order to achieve the goal of network management.Finally will monitor the function of the platform software for showing layer can realize the function of the user’s expectations. Mainly includes the users of digital signal monitoring item setting, the number of sex of the stream, all-round monitoring channel and content level, at the same time provides alarm record and alarm video query function, and satisfy the users than any picture, signal monitoring, more hd signal monitoring aspects of special function.