How To Improve The Security Of The Hard Disk Broadcast System - Digital Broadcast Systems, Security

Recent years, with multimedia technology and IT technology to the field of integration

and television, and promote the rapid development of radio and television technology. Advanced equipment and technology after another, giving the technology involved in radio and television provide a broad imagination and play to the stage. The broadcast, the video-server computer network as the core and supported by disk control system in the country at all levels of broadcast television gaining in popularity. The new broadcast system, including not only the traditional signal of total control, sub control, also increased the program's digital media technology (program to upload, your, etc.), broadcast digital media asset management, broadcast system security testing and other new content .

With traditional broadcast to video-based system compared to the hard disk broadcast system more flexible and efficient; However, because of computer networks and control systems rely on increased capacity to significantly reduce human intervention. View of the TV broadcast of "continuous" and "irreparable," the special nature of the use of new equipment, new technology, how to improve air safety work, give full play to the strengths of the hard disk broadcast system, to avoid the negative effect is TV workers to be of concern.

A digital broadcast system security policy

1. Video and audio links, and equipment safety Broadcast, including security system operation

the safety and security of human action. System operation security lies in scientific and reasonable structure and stable performance of the system equipment. To ensure the safety of system operation, planning and ultimately broadcast a variety of backup systems, such as matrix backup, the backup video server, broadcast control machine backup and power backup and so on.

(1) Dual Backup Dual Backup Broadcasting System is to protect the safe operation of a common means and proved very effective means. Broadcast system on the hard disk, video servers and broadcast video and audio control machines are systems and control systems link the core device, usually 1:1 dual hot backup.

(2) dribbling combination Broadcast system with hard drive a major flaw is that people are the source of the interference signal weakening. In a video signal source for the era, people are very flexible on the VCR control. Video server is not, When, due to material defects or when the player is unable to decode the cards, the operation at their wits end (the hard case). The use of double hot backup to a certain extent can make up for this shortcoming, however, material on programs for the hard disk inherent defects (such as the recording head when the result of poor blocking broadcast), even if the two-machine hot backup can not do anything. Therefore, reserves the right combination of video composition dribbling hot backup system as a complementary pair of machines is very necessary. Meanwhile, the video recorder can control from the sowing machine and manual operation, which facilitates large-scale system paralyzed in the face of the case (especially broadcast control machine or even paralysis of the broadcast network control) formed the minimum emergency broadcast system in a timely manner. Of course, keep the number of video need to take into account the actual balance.

(3) Dual power supply Broadcast equipment is present, most of dual power supply. Power distribution planning in the room, often in the technology supply system but also with a large capacity UPS power supply system to ensure that the system temporary power outage in the system power. Typically, the cabinet power supply rafts, technical power and UPS power is separate. In the power cord connected equipment, it must ensure that the standby power supply line 2 is not connected with a power rafts; the same time, the usual maintenance, we must pay attention to the power module on the device checks to ensure that the two power modules are normally work.

(4) system redundancy

For complete system backup, such as size (large number of channels) broadcast system, a large, usually to a certain number of channels in a subsystem, then the whole system is divided into several sub-systems. As a relatively independent subsystems for easy system expansion and maintenance, must be considered as a whole backup subsystem measures. In planning, conditional, consider the establishment of a free subsystem specialized, as its structure and other subsystems. Usually carried out in which various devices and software system testing, when the main use of the system during the transformation or extensive repair, you can modify the output jumper and the other one of workstation configuration to replace the broadcast subsystem.

by: gaga

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