Editing Control
On the television broadcast control room's security policy – security management, broadcast control room and television – broadcasting industr
TV station As the party and government propaganda agency, the need to strengthen the security of high-quality broadcast programs. Then, as the provincial television stations, how to improve Broadcast Control Security policy implementation engine room safe broadcast it? We believe that broadcasting control room of the security policy should include two aspects, namely, equipment and personnel security policy security policy, in which stability and normal operation of the equipment is safe to broadcast the premise, while on duty is the safety of air quality guarantee. In this paper, these two aspects of television broadcasting control room to talk about security policy.
1, device security policy Safety equipment, including hardware security and software security.
1. Hardware Security Policy (1) the security of electricity supply room
Room supply security is a broadcast control room to ensure basic security policy. Broadcast Control Room scientific and reasonable arrangement of electricity demand, power equipment, lighting and power consumption must be separated, while two-way standby power supply, respectively, through two sets of UPS, power distribution cabinet and then to room. Each half of the cabinet’s power outlets should be connected the main power supply, half of the connected equipment power supply, dual power supplies on the same is true for single standby power supply, if two devices, but also connected the main power supply main equipment, maintenance equipment, access equipment power, be separated from the main equipment, such failure case of a single power outage, can ensure that broadcast were not affected. The engine room of any person (including technical maintenance of electricity) can not be unauthorized use of the unit, to prevent short circuit caused a large accident.
(2) security of the system clock
Clock reference is the broadcast control room automation, and various live basis. Now the general use of GPS Broadcasting System Satellite Signal, using the GPS receiver and high-stability clock bell and the corresponding clock signal divider system composed of GPS receiver clock, the main one prepared with a two receivers plus an automatic switching device. In the broadcast control section, the general way of using computer network timing.
(3) synchronization system security Synchronous system is the broadcast control system based on the normal operation of the utmost importance, once lost, the images scroll key signal can not be superimposed. Typically use two synchronized standby generator plus an automatic switching device. Synchronous machine output with simultaneous analog and digital synchronization of two, for the use of digital synchronous switch, if synchronization is lost BYPASS switch can be used to cut emergency broadcast.
(4) video server’s security
Provincial TV stations now mostly used for video server broadcast system as the core of the hard drive, with two standby server image, each channel with a main broadcast signal a prepared two hard drives, if the main path and the black market, static frames and other trouble, and immediately broadcast all prepared way, while using VCR Synchronous broadcast equipment. There are multiple channels for broadcast control systems, system builders generally use cross-principle that half of the main channel signal source from the main server hard disk, the other half of the main channel signal source from the standby server hard disk, so that a single video server crashes Time will not affect all channels. Unless there is failure, all channels broadcast back to the same server. Extreme cases, of course, standby video server crashes as soon as possible can only be broadcast by video response.
(5) automatic broadcast control machine safety
Automatic broadcast system , The controller is the core, must ensure that it works. Automatic broadcast system control machine before using the lower multi-machine system, only considered the impact of editing control risk, did not consider the risk of lower-level machine failure. Today, more use of automatic broadcast system standby controller system, that each channel is controlled by two standby machines, in general, the main control machine working properly, control switcher, video recorders, matrix and other peripheral equipment, editing, and controlling distinction between the software switch. When the main controller is faulty equipment by switching switches to control the machine to take over control of the task. Drive signal for the control, proposed the principle of separation of the main equipment, ie the main control machine control of the main drive signal control equipment prepared the hard disk controller signal, it can avoid the bad case of switchover to standby switch the hard disk can not be controlled decoder card dangerous. Single hard drive failure signal manually in order to reduce the pressure recorder with broadcast and improve emergency switching accuracy, and can control the machine in advance a set of broadcast video automatic emergency broadcast system configuration, need to switch immediately to control the machine configuration The new configuration control. Another time a week to restart the use of appropriate control of machine, to reduce the control plane crashes and all kinds of random error.
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