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Article by jekky

Keywords digital signal broadcast quality signal monitoring attacks illicit signal With the deepening of the digital process many TV station Are all Broadcast Control The digital transformation of the system how to Digital TV Signal for effective monitoring and management can be quantified in all broadcast sectors on a common concern A good signal monitoring system should be able to have good detection accuracy detection of content rich flexible and easy to operate Alarm monitoring software Anhui Province and Anhui TV Television Technology Co Ltd has developed a new generation of digital television broadcast quality Network Monitoring system which increased according to the characteristics of digital signal monitoring content using a unique detection algorithm to achieve frame accurate video detection using Memory Buffer technology failure occurs when the audio signal Package Including the failure of the signal before and after 10 seconds recorded Once the system is put into use in television will be able to reduce the risk of air accidents and reduce recovery time while the content and broadcast television to broadcast quality Automation Records management for the television broadcast to provide effective management and evaluation basis Following on the set of Anhui Modern digital signal range of network monitoring systems and their applications to make a brief introduction Figure 1 shows the multi channel digital television signal monitoring system for the overall structure diagram the system consists of four parts monitoring alarms monitoring devices remote alarm and monitoring Server Parts to the internal LAN to rely on television work together can provide real time monitoring of broadcast and alarm and fault recording playback query statistics and so on Also need to note that the monitoring system used by the network does not need to broadcast television network NLE Making connections so it will not Broadcast system Have any effect Figure 1 multi channel monitoring system structure Monitor alarm Monitor alarm is the single channel signal alarm for the high standard 1U chassis can be installed in the broadcast room in the rack In the former case Panel There are warning lights and the system working status indicator when the failure to detect the signal corresponding indicator will light up and in the form of sound and light alarm notification on duty In addition the alarm itself is built in FLASH electronic disk to save the failure data The reason is not the ordinary hard drive to store data for fault monitoring system stability considerations since the long term continuous hard work of state failure probability big so the system does not use the hard drive but can be used repeatedly in more than 300 000 Erase FLASH electronic disk to store fault data which makes monitoring system able to adapt to the requirements of monitoring 24 hours a day greatly enhancing system stability and reliability Alarm monitoring the network regularly to monitor the server terminal and report on their work status and alarm information data Alarm can be the way SDI signal analysis and alarm monitoring monitoring of content static frame black field color field including the Red Square Blue Field Ash and other solid signal color bar Video interrupt and audio interruption and so the volume is too low Users can monitor the content of various alarm time and the volume of the alarm threshold level set When a fault occurs and to the conditions set by the user to monitor the alarm will alert the same time the terminal through the network to monitor real time transmission alarm information After failure the system will automatically record the details of this failure such as time of occurrence duration fault type and fault information of this data together with the recorded audio file to their e session to prepare for the future query Video alarm detection module uses a special image recognition algorithm making video detection to achieve frame accuracy Even if there is a video signal or interrupt the video signal mixed with a frame of color bar or color field can be detected Detection module also uses a unique mathematical algorithm to be monitored signal noise processing the black field color field and other failures greatly reduce the false negative rate and improve the system detection sensitivity and reliability In addition the alarm set the logo screen area even in the dark field color field such as failure of color have station logo superimposed on it failure would still be detected When the failure will be MP GE G 4 digital compression to record faults and fault site 10 seconds after the disappearance of the normal signal and then with buffer fault occurs 10 seconds before the normal signals the failure to form a complete file the last file saved in the FLASH e session by this method can be true of the fault site before and after playback summarize cause of the accident to prevent similar accidents happening again Taking into account the fault tolerance of the system monitoring system set up since the launch of special protection measures When monitoring alarm system crash or abnormal working after a certain time the alarm will automatically restart to ensure that a long time in normal working condition

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