CN101719923A - System and method for broadcasting disaster-tolerant backup - Google Patents

System and method for broadcasting disaster-tolerant backup Download PDF

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CN101719923A
CN101719923A CN200910311327A CN200910311327A CN101719923A CN 101719923 A CN101719923 A CN 101719923A CN 200910311327 A CN200910311327 A CN 200910311327A CN 200910311327 A CN200910311327 A CN 200910311327A CN 101719923 A CN101719923 A CN 101719923A
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broadcast
fully
former
broadcasting
programme
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CN101719923B (en
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姚威
商同
陈震
李晓宇
李智鹏
阙晟华
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Beijing Dayang Technology Development Inc
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Beijing Dayang Technology Development Inc
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Abstract

The invention relates to a system and a method for broadcasting disaster-tolerant backup. The system comprises a primary broadcast system and a disaster-tolerant backup system, wherein the primary broadcast system comprises a primary broadcast program editing work station, a primary broadcast database, a primary broadcast message server, a primary broadcast proxy server, a primary broadcast memory stack and a primary broadcast controlling work station; the disaster-tolerant backup system comprises a standby broadcast program editing work station, a standby broadcast database, a standby broadcast message server, a standby broadcast controlling work station, a standby broadcast proxy server, a standby broadcast memory stack and a program standby broadcast system; the primary broadcast proxy server is connected with the standby broadcast proxy server; and the program standby broadcast system is connected with the primary broadcast memory stack and the standby broadcast memory stack. Due to the establishment of the program standby broadcast system, the program file to be broadcast can be automatically standby broadcast to the disaster-tolerant backup system from the primary broadcast system; and due to the establishment of the proxy servers, the information of the program which are to be broadcast or are being broadcast and the broadcast controlling emergency operation information can be synchronized in real time from the primary broadcast system to the backup system. The system and the method for broadcasting disaster-tolerant backup realize that the program can be broadcast safely under the condition of catastrophic failure.

Description

A kind of system and method for broadcasting disaster-tolerant backup
Technical field
The present invention relates to a kind of system and method for broadcasting disaster-tolerant backup, is a kind of computer network system and method, is a kind of disaster-tolerant backup of system and method radio data system carries out to(for) whole broadcast system that is used for.
Background technology
Generally, TV station or other video-audio program broadcasting agency, when design and making up broadcast system, security of system is an important consideration very.Traditional broadcast system adopts the redundancy backup scheme of component-level usually, improves the overall security of broadcast system, possesses certain disaster-tolerant backup ability.
At present, the redundancy technique that most of broadcast system adopts is in a kind of more original state: for a broadcast system, can broadcast the redundancy backup structure that control appliance, video server and three parts of switching device adopt component-level usually.
Broadcast control section, on the Broadcast Control work station of control end, dispose and broadcast software, receive the message informing that single-shot cloth is compiled by general editting office, load from database and broadcast programme in advance; By the dissimilar playing device of RS422 serial ports control, mainly comprise video server, emergent video tape recorder, switching matrix (or cut bank), film titler etc., finish the broadcast of video-audio program according to relevant devices such as programme sequencing control broadcast video servers.Between the active and standby broadcast Control work station, carry out the heartbeat communication, realize the synchronous of programme and Broadcast Control emergency operation by RS232 serial ports or Ethernet.
Broadcast the master-slave redundancy framework at Control work station, adopt usually active and standby fully with separate active and standby two kinds of application models, specific implementation is as follows:
Complete active and standby pattern is made of active and standby Broadcast Control work station and RS422 negater.The RS422 negater provides multichannel RS422 serial ports control channel, and each passage provides two input ports and an output port.The RS422 control line of active and standby Broadcast Control work station control playing device inserts two input ports of RS422 negater dedicated tunnel respectively, and output port is connected to concrete controlled plant by control line.Adopt this mode to realize shared control to playing device.Under the normal condition, the RS422 negater is in main road, controls work station control playing device by the main broadcaster and broadcasts; Occur unusually to main frame by the heartbeat communication detection when being equipped with the Broadcast Control work station, switch to road fully, proceed to broadcast by standby host control playing device by GPI control RS422 negater.This active and standby pattern is used more extensive in TV station's broadcast system.
Separate active and standby pattern, system configuration is fairly simple, and active and standby Broadcast Control work station is controlled playing device separately respectively, comprises that video server, emergent video tape recorder, switching matrix (or cut bank) etc. broadcast.Between the active and standby Broadcast Control work station, carry out the synchronous of programme and control operation, be equivalent to the systems of two cover independent operatings by the heartbeat communication.But when wherein some Broadcast Control work stations broke down, what it was controlled can't normally broadcast a cover playing device.If this fault can not be recovered for a long time, the reliability and the fail safe of whole broadcast system will be reduced.
The video server part, the professional video server of employing broadcast television industry.The video server of different brands based on software codec or hardware compression technology, is decoded to the program media file of storing in inner data disks or the external disk array, looks audio frequency I/O integrated circuit board output baseband signal through specialty.Based on the VDCP agreement, video server receives the standard control command that the Broadcast Control work station sends, according to sequential finish program pre-volume, operation such as broadcast, stop.In order to improve the disaster-tolerant backup ability of broadcast system, adopt active and standby video server to carry out redundancy backup and broadcast.Active and standby video server respectively provides one to look the audio decoder passage, the identical baseband signal of synchronous playing two-way in the broadcast process, and give the rear end look the audio frequency switching device.
The switching device part mainly is made of switching matrix (or cut bank), has very high switching controls precision.For switching matrix, signal input part inserts the baseband signal that all playing devices are sent, and output is sent the two-way baseband signal usually.One the tunnel is used for the signal technical supervising, and the monitoring video picture is monitored audio signal; After the key signals such as other one tunnel stack station symbol, captions, give the back end signal transmission system.Switching matrix receives the switching controls instruction that the Broadcast Control work station sends, and accurately switches according to the broadcasting signal source that the time ordered pair of programme is dissimilar.In order to improve the disaster-tolerant backup ability of broadcast system, adopt active and standby switching matrix to back up broadcast, when the single equipment fault occurring, can not influence normal broadcast.
Generally, the system architecture of redundancy backup is adopted for above-mentioned three key links in TV station broadcast system inside, and there is not single routed point in key equipment.Based on heartbeat communication and High Accuracy Control technology, improved the disaster-tolerant backup ability of whole broadcast system.
TV station's broadcast system adopts the redundancy backup framework of this component-level, and comprehensive inadequately aspect the disaster-tolerant backup ability, the problem description of existence is as follows:
For major natural disasters (for example earthquake, fire), do not have the disaster-tolerant backup ability.Natural calamity directly causes irresistible influence to whole broadcast system after taking place, broadcast system forfeiture broadcast ability, the generation that causes breaking accident.
At the situation of broadcast system outage, carry out power supply under the case of emergency by UPS usually.But if electric power system can't be repaired for a long time, the generation that causes breaking accident the situation of whole broadcast system outage will appear so.
Along with development of computer network and extensive use, the broadcast system of TV station or other video-audio program broadcasting agencies is carried out the relevant operation flow of broadcasting on the basis of computer network at present.Although broadcast system is relatively stricter to the security level required of virus prevention, in case but the inner virus outbreak of broadcast system, certainly will cause whole system internal core equipment, for example Broadcast Control work station, video server are subjected to the virus influence, and causing program to broadcast can't normally carry out.
On the other hand, for traditional broadcast system, program file to be equipped with broadcast mode also very backward, need program making department that the finished product program is packaged as broadcasting format, download to tape then; After the technology audit, submit to broadcast department; Broadcast system inside arranges the special messenger to be responsible for the collection of program, uses video tape recorder that tape is play, and gathers by the baseband signal that the coding pass of professional video server is play video tape recorder, finishes the documentation work of program.Program file through after gathering is stored in the professional video data in server dish, needs the people to key in control command by hand before broadcasting and will wait to broadcast the program media file migration to the video server that is used to broadcast.
Broadcast system carries out program by tape-shaped medium's to be broadcast fully, and for whole broadcast operation flow, the problem description of existence is as follows:
Along with the continuous development of TV station's networking, broadcast system no longer is an information island, with TV station other operation systems be inexorable trend alternately.These external service system relate to program production management system, general editting office compiles single system, program making system (containing ad system), reaches media asset management system etc.; Interaction content relates to metadata information and program media file.Adopt traditional tape-shaped medium's to carry out program file and broadcast fully, need program file be downloaded to tape, in broadcast system, gather again then, finish the documentation of program in program making department.Adopt this traditional program to be equipped with broadcast mode, at first efficient is very low; And adopt tape to record and gather, can cause the decline to a certain degree of program image quality; In addition, need also traditional recorder is safeguarded that maintenance costs is also very big.
Summary of the invention
In order to solve the prior art problem, the present invention proposes a kind of system and method for broadcasting disaster-tolerant backup.Described system and method is on original broadcast system basis, make up a fully independently disaster-tolerant backup system in the strange land, system architecture and former broadcast system are basic identical, have independent database, broadcast core cells such as control section, video server, switch device, the internal security rank of two systems is in full accord.Make up simultaneously and broadcast the baseband signal switched system, finish former broadcast system broadcasts baseband signal and the disaster-tolerant backup system broadcasts baseband signal output and emergent the switching.
The object of the present invention is achieved like this: a kind of system of broadcasting disaster-tolerant backup, described system comprises: former broadcast system, disaster-tolerant backup system and broadcast baseband signal switched system, described former broadcast system comprises: the former programme editing station of broadcasting, with described former what broadcast that programme editing station is connected is former multicast data storehouse and former broadcast message server, described former multicast data storehouse is connected with former Broadcast Control work station main frame, former Broadcast Control work station standby host, the former acting server of broadcasting; Described former broadcast message server is connected with former Broadcast Control work station main frame, former Broadcast Control work station standby host, the former acting server of broadcasting, described former Broadcast Control work station main frame and former Broadcast Control work station standby host interconnect, and described former Broadcast Control work station main frame is connected with the former broadcast video server of broadcasting with former Broadcast Control work station standby host; Described disaster-tolerant backup system comprises: broadcast programme editing station fully, described broadcast fully programme editing station be equipped with the multicast data storehouse and fully the broadcast message server be connected, described broadcast message server and the Broadcast Control work station main frame fully of being equipped with, Broadcast Control work station standby host fully, broadcasting acting server fully connects, described multicast data storehouse and the Broadcast Control work station main frame fully of being equipped with, Broadcast Control work station standby host fully, broadcast acting server fully, program is equipped with broadcast system and connects, the described work station main frame of Broadcast Control fully and fully Broadcast Control work station standby host interconnect, the described work station of Broadcast Control fully main frame and Broadcast Control work station standby host fully with broadcast broadcast video server fully and be connected; Described former broadcast acting server by gigabit Ethernet with broadcast acting server fully and be connected; The described server system of broadcasting fully is connected with the former memory bank of broadcasting of former broadcast system by express network, and with the disaster-tolerant backup system in broadcast memory bank fully and be connected; Described broadcast baseband signal switched system is broadcast broadcast video server and is broadcast broadcast video server fully and link to each other with former.
Use the method for a kind of broadcasting disaster-tolerant backup of said system, described method comprises following running:
Broadcasting fate fully sets and the redjustment and modification process: comprise preestablishing program from the in advance process of fate N automatically fully broadcast of fully broadcasting buffer memory that be equipped with broadcast system of former broadcast system to the disaster-tolerant backup system, preestablish program and broadcast buffer memory fully to the process of broadcasting fully automatically of fate M in advance of broadcasting video server fully from what be equipped with broadcast system, and the needs that change according to the business process of N and M being carried out redjustment and modification.
Backup and real-time synchronous process during normal the broadcast, during described normal broadcast backup and in real time synchronous process comprise: the process that media file is broadcast automatically fully, metadata information be synchronous process in real time, and described metadata information synchronous process in real time comprises the synchronous process of programme of broadcasting in advance, just broadcasts the synchronous process of programme;
The process that the Broadcast Control emergency operation is synchronous: be used for the work station of Broadcast Control fully of disaster-tolerant backup system when accident occurring and the former Broadcast Control work station of former broadcast system and realize the synchronous in real time of Broadcast Control emergency operation.
Broadcast baseband signal output and the process of switching: broadcast the baseband signal switched system and receive the process of broadcasting broadcast video server and broadcasting the broadcast baseband signal of broadcast video server fully and select one road signal wherein to export from former.
The beneficial effect that the present invention produces is: broadcast server fully owing to set up, realized waiting to broadcast program file from former broadcast system broadcasting fully automatically to the disaster-tolerant backup system; Owing to set up acting server, realized broadcasting in advance programme information, just broadcast programme information and Broadcast Control emergency operation information from former broadcast system to the disaster-tolerant backup system synchronously in real time.Adopt the system and method for the broadcasting disaster-tolerant backup of the present invention's proposition, improved the level of security of whole broadcast system.Even former broadcast system is because of major natural disasters, electric power system fault, internet worm outburst, cause former broadcast system paralysis forfeiture broadcast ability, at this extreme case, because all there are backup in program file to be broadcast, related-program list information in the disaster-tolerant backup internal system, therefore the disaster-tolerant backup system can independently normally broadcast, guarantee to broadcast baseband signal and be not affected, realize the final purpose that high safety is broadcasted.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the schematic diagram of the described broadcasting disaster-tolerant backup of inventive embodiments one system;
Fig. 2 is that the subsystem program of the described broadcasting disaster-tolerant backup of inventive embodiments two system is equipped with broadcast system and formerly broadcasts memory bank, broadcasts the principle schematic of memory fully;
Fig. 3 is that the method for inventive embodiments four described broadcasting disaster-tolerant backups realizes waiting to broadcast the FB(flow block) that program file is broadcast automatically fully;
Fig. 4 is that the method for inventive embodiments five described broadcasting disaster-tolerant backups realizes broadcasting in advance the synchronous FB(flow block) of programme;
Fig. 5 is that the method for inventive embodiments six described broadcasting disaster-tolerant backups realizes just broadcasting the synchronous FB(flow block) of programme;
Fig. 6 is that the method for inventive embodiments seven described broadcasting disaster-tolerant backups realizes the synchronous FB(flow block) of Broadcast Control emergency operation.
Embodiment
Embodiment one:
Present embodiment is a kind of system of broadcasting disaster-tolerant backup, and principle schematic as shown in Figure 1.The described system of present embodiment comprises: former broadcast system, disaster-tolerant backup system and broadcast baseband signal switched system.Described former broadcast system comprises: the former programme editing station of broadcasting, with described former what broadcast that programme editing station is connected is former multicast data storehouse and former broadcast message server, described former multicast data storehouse is connected with former Broadcast Control work station main frame, former Broadcast Control work station standby host, the former acting server of broadcasting; Described former broadcast message server is connected with former Broadcast Control work station main frame, former Broadcast Control work station standby host, the former acting server of broadcasting, described former Broadcast Control work station main frame and former Broadcast Control work station standby host interconnect, and described former Broadcast Control work station main frame is connected with the former broadcast video server of broadcasting with former Broadcast Control work station standby host.On the basis of former broadcast system, making up the disaster-tolerant backup system realizes the integral body of broadcast system is backed up, make up and broadcast the baseband signal switched system, realize broadcast baseband signal and the output of the broadcast baseband signal of backup broadcast system output and the switching under the abnormal conditions former broadcast system output.
Along with the continuous development of TV station's networking, single system is compiled by broadcast system and outside program production system, general editting office, media asset management system, program making system, and the handbill arranging system carries out the mutual of media file and programme information.The program of broadcast system source is abundanter, the file that generates except broadcast system interior video collection of server, and adopt beyond the urgent program file that file mode directly imports; Also have major part program to be broadcast to come from outside program making system, media asset management system.
Former broadcast system inside, at waiting to broadcast the program media file from external system, broadcast programme in advance and full court is unified program ID according to general editting office, according to formulating the good strategy of broadcasting fully, the memory bank that is used for the program exchange from external system is broadcast automatically fully to the former memory bank of broadcasting.Thereby guaranteed before program broadcasting time arrives,, wait to broadcast the program media file, be used for the formal broadcast of follow-up former broadcast system the broadcasting buffer memory fully and formerly broadcast in the video server readyly of the former former broadcast system of broadcasting memory bank in former broadcast system inside.
The former broadcast system inside that present embodiment relates to, programme is broadcast by what interface obtained that general editting office compiles the single system layout in week in the former programme editing station of broadcasting, and is responsible for carrying out refinement to broadcasting programme week according to program broadcast plan then, generates and broadcasts programme in advance.Broadcast programme in advance and be saved in former multicast data storehouse, broadcast through submitting to after audit, the review operation, and load the message informing of programme by former broadcast message server issue according to operation flow.Just broadcast programme for what broadcast to have loaded, can align the program of broadcasting in the programme the to be broadcast modification of meet an urgent need at the former programme editing station of broadcasting equally, be saved in former multicast data storehouse then and also more broadcast programme the first month of the lunar year.
The inner control section that broadcasts of former broadcast system, the complete active and standby framework of employing TV station extensive use.Broadcasting control section is realized main video server, is equipped with the shared control of playing devices such as video server by active and standby Broadcast Control work station.Under the normal condition, have only the control command of Broadcast Control work station main frame to be output on the controlled plant and carry out, be called usually and be in major state; Broadcast Control work station standby host in running, can send and the complete synchronous control command of control Broadcast Control work station main frame, be not output on the controlled plant but these control commands are in Status of Backups, be called the control state fully that is in usually.Between former Broadcast Control work station main frame and the former Broadcast Control work station standby host, rely on the Socket port of Ethernet appointment to set up the heartbeat communication, detect instruction, can also realize the synchronous of control operation by the heartbeat communication in addition according to suitable frequency transmit status.Under the normal condition, broadcast by former Broadcast Control work station host computer control playing device (normally broadcast video server); When former Broadcast Control work station standby host by the heartbeat communication detection when former Broadcast Control work station main frame breaks down, proceed to broadcast by former Broadcast Control work station standby host control playing device (normally broadcast video server).It is pointed out that in the broadcast system running major state of Broadcast Control work station main frame, standby host and to be equipped with the control state be not changeless.During the system initial launch, specify one to broadcast the Control work station and broadcast process as host computer control in advance, at this moment Broadcast Control work station main frame is in major state, and Broadcast Control work station standby host is in control state fully.In case Broadcast Control work station standby host by the heartbeat communication detection when Broadcast Control work station main frame breaks down, Broadcast Control work station standby host will be taken over Broadcast Control work station host computer control and broadcast process, at this moment be in the Broadcast Control work station standby host of controlling state fully before the fault and switched to major state, the maintenance of rolling off the production line and the Broadcast Control work station main frame that is in major state before the fault can shut down, the use of reaching the standard grade again after the reparation.Based on this system architecture, when Single Point of Faliure appearred in nucleus equipments such as Broadcast Control work station, video server, broadcast system still can operate as normal, has certain disaster-tolerant backup ability.
In the broadcast process, the former Broadcast Control work station that is in major state is received after the message that loads programme, load from former multicast data storehouse and to broadcast programme in advance and be added into and just broadcast the programme end, then by carrying out the bill operation, with the programme after integrating write broadcast database just broadcast table, be in the Broadcast Control work station of controlling state fully by the heartbeat notice simultaneously and just broadcast the programme that upgrades the table after integrating from database.The former Broadcast Control work station that is in major state is according to every pairing signal source of program in the programme, and the frame precision of finishing broadcast and output signal according to all controlled plants of sequencing control is switched.Be in simultaneously control state fully former Broadcast Control work station equally according to every pairing signal source of program in the programme, finish all control operations according to sequential, but its control command is not output on the controlled plant when being in Status of Backups and carries out.
In the broadcast process, if take place urgent or fortuitous event (adjust program broadcast order, cancel the broadcast of certain original program etc.) temporarily, need the artificial corresponding Broadcast Control emergency operation of on be in the former Broadcast Control work station of major state, carrying out, and be in the identical control operation of former Broadcast Control work station execution of controlling state fully through the heartbeat notice.
Broadcast business features at TV station, between disaster-tolerant backup system and the former broadcast system, must two key problems of solution: the firstth, the broadcasting fully automatically of program media file; The secondth, metadata information (programme and control information) in real time synchronously.Build in the strange land owing to broadcast the disaster-tolerant backup system, can't carry out program by tape-shaped medium's and broadcast fully, therefore between two systems, adopt networking, documentation mode to carry out broadcasting fully automatically of program media file.
The described disaster-tolerant backup of present embodiment system comprises: broadcast programme editing station fully, described broadcast fully programme editing station be equipped with the multicast data storehouse and fully the broadcast message server be connected, described broadcast message server and the Broadcast Control work station main frame fully of being equipped with, Broadcast Control work station standby host fully, broadcasting acting server fully connects, described multicast data storehouse and the Broadcast Control work station main frame fully of being equipped with, Broadcast Control work station standby host fully, broadcast acting server fully, program is equipped with broadcast system and connects, the described work station main frame of Broadcast Control fully and fully Broadcast Control work station standby host interconnect, the described work station of Broadcast Control fully main frame and Broadcast Control work station standby host fully with broadcast server fully and be connected; Described former broadcast acting server by gigabit Ethernet with broadcast acting server fully and be connected; The described server system of broadcasting fully is connected with the former memory bank of broadcasting of former broadcast system by the express network system, and with the disaster-tolerant backup system in broadcast memory bank fully and be connected.
The difference of disaster-tolerant backup system and former broadcast system maximum is exactly to set up program to be equipped with broadcast system specially, wherein also set up specially and broadcast server, migration management server and migration execution server fully, guaranteed to realize waiting to broadcast broadcasting fully automatically of program media file between disaster-tolerant backup system and the former broadcast system.Inner and the disaster-tolerant backup internal system at former broadcast system is set up respectively and is formerly broadcast acting server and broadcast acting server fully.Formerly broadcast the message informing that acting server is responsible for receiving former broadcast system,, issue to the acting server of broadcasting fully of disaster-tolerant backup system from former broadcast system with broadcasting professional relevant programme information, Broadcast Control emergency operation information.And the effect of broadcasting acting server fully is program receiving list information, Broadcast Control emergency operation information, then to the disaster-tolerant backup internal system notice that gives out information.By the acting server of setting up specially, guarantee in the broadcast process, realize the synchronous in real time of metadata information between disaster-tolerant backup system and the former broadcast system.
The basic ideas that present embodiment is realized are: on the basis of former broadcast system, present embodiment is in the disaster-tolerant backup internal system, and a subsystem of setting up specially: program is equipped with broadcast system.Program is equipped with the broadcast system upper strata and is provided with and broadcasts server fully, GMP (the Global Media Prepare) software of having broadcast server disposition fully.This software is according to broadcasting strategy fully from being equipped with the multicast data storehouse inquiry and loading and broadcast programme in advance of disaster-tolerant backup system, and relies on full court to unify program ID to mate broadcasting fully of former broadcast system and wait to broadcast the program media file in the buffer memory.The match is successful, and the back generates program migration task, and these tasks are added to the data table related in multicast data storehouse fully.Program is equipped with the bottom of broadcast system and disposes many migration execution servers with distributed structure/architecture, and the upper strata is the migration management server, and server cluster is carried out in management subordinate's migration.The migration management server is responsible for reading the migration task from database, dynamic assignment carries out server cluster for migration then; Migration is carried out server cluster and is responsible for carrying out program migration task, with wait to broadcast the program media file from former broadcast system broadcast fully that buffer memory migrates to broadcast system fully broadcast buffer memory fully.Before closing on broadcast, GMP in the same way, broadcast strategy fully according to what preset, generate program migration task, through migration management server dynamic assignment, carry out server cluster by migration and carry out the migration task, migrate to and broadcast video server fully from the buffer memory of broadcasting fully that is equipped with broadcast system waiting to broadcast the program media file, the program media file was being broadcast in the video server readyly fully after migration was finished, and can be used for follow-up formal broadcast.
Consider that (length is 45 minutes high definition program to the media file data amount, contains the media file of video and audio frequency, and size is about 19.2GB very greatly; Length is 45 minutes SD program, the media file that contains video and audio frequency, size is about 6.0GB), in conjunction with the characteristics of broadcasting business self, between former broadcast system and disaster-tolerant backup system, need continue to carry out the concurrent transmission of media data file for a long time, must guarantee that enough migration bandwidth supporting businesses normally move.Therefore, when design and actual the construction, need adopt the express network system, be used for the transmission of media data file.Usually can select ten thousand mbit ethernets or SAN fiber optic network.Comparatively speaking, between former broadcast system and the disaster-tolerant backup system, the real-time of metadata information has the characteristics of high real-time synchronously, only finishes the communication of lightweight file such as programme information, emergent control operation, there is no specific (special) requirements for transmission bandwidth.Therefore, adopt the gigabit Ethernet framework, be used for the transmission of lightweight metadata.In sum, present embodiment adopts gigabit Ethernet to be used for the transmission unit data message when making up the broadcasting disaster-tolerant backup system, adopts optical networking to be used for the transmission of media data file.
The operating state of present embodiment comprises: the normal operating state of broadcasting and the unexpected and standby mode of operation of carrying out appears or claim the Broadcast Control emergency operation synchronously in real time.Broadcast under the operating state normal, need to carry out the file backup between former broadcast system and the disaster-tolerant backup system.The backup of this file comprises the backup of media file or claims media file to broadcast the backup with metadata and control information fully.The backup of metadata comprises the backup of broadcasting program in advance and the backup of just broadcasting programme.Occur unexpected or in emergency circumstances (adjust program broadcast order, cancel the broadcast of certain original program etc.) temporarily, need to carry out the synchronous in real time of Broadcast Control emergency operation between disaster-tolerant backup system and the former broadcast system.
By above-mentioned media file broadcast fully, programme information, and Broadcast Control emergency operation (adjust program broadcast order temporarily, cancel the broadcast of certain original program etc.) synchronously in real time, guaranteed that the broadcast baseband signal that broadcast baseband signal that the disaster-tolerant backup system sends and former broadcast system send is synchronous fully.
Final former broadcast baseband signal of broadcasting of present embodiment Central Plains broadcast system and disaster-tolerant backup system be final broadcast broadcast baseband signal fully, give the terminal baseband signal switched system that broadcasts respectively, principle schematic as shown in Figure 1.The described terminal baseband signal switched system that broadcasts of present embodiment is often referred to the 2X1 AV switcher that TV station's broadcast system generally adopts, and provides two-way to look audio frequency input and a tunnel and looks audio frequency output.The described terminal baseband signal switched system that broadcasts, support manual switchover and automatic switchover dual mode:
Manual mode, generally pass through control panel or application software by the staff, according to the former broadcast baseband signal of former broadcast system and the state that broadcasts baseband signal fully of disaster-tolerant backup system, manually control the switching that terminal switching device is finished output signal.
Automatic mode, for the 2X1 AV switcher according to the warning parameter that presets, carrier wave, SDI locking, row standard, EDH and embedding audio frequency, data are had, do not have and detect, finish former broadcast baseband signal and broadcast automatic switchover between the baseband signal fully by internal signal analyzing and processing mechanism.In addition, during the outage of 2X1 AV switcher, supporting signal leads directly to function.
Embodiment two:
Present embodiment is the improvement of embodiment one, and being embodiment one is equipped with the refinement of broadcast system about program, as shown in Figure 2.The described program of present embodiment is equipped with broadcast system and comprises: broadcast server fully, broadcasting server fully is connected with the migration management server, the migration management server is carried out server cluster with the migration of being made up of a plurality of migrations execution servers and is connected, and migration is carried out server cluster and is connected with the former memory bank of broadcasting fully of broadcasting memory bank, long-distance disaster system of former broadcast system.Former broadcast memory bank comprise former broadcast video server and former broadcast system broadcast buffer memory fully.Broadcast fully memory bank comprise broadcast video server fully and be equipped with broadcast system broadcast buffer memory fully.
Program is equipped with the subsystem that broadcast system is the disaster-tolerant backup system, it mainly acts on and is to unify program ID according to broadcasting programme and full court in advance, and the media program file of former broadcast system is moved to broadcasting in the memory bank fully of disaster-tolerant backup system from former broadcasting the memory bank.Migration work is not simple carrying, broadcasts the server loading fully and broadcasts in advance after the programme, at first according to program ID the program that has existed in the buffer memory of broadcasting fully that is equipped with broadcast system is mated automatically.Do not need to move for repeat programme, wait to broadcast program and generate and to broadcast the migration task accordingly fully for non-existent in the disaster-tolerant backup system.Secondly, broadcast server fully and will start broadcasting the time according to broadcasting the programme program map in advance, the priority of broadcasting the migration task is fully sorted automatically, what guarantee to close on broadcast waits to broadcast program priority migration broadcasting buffer memory fully and broadcasting video server fully to broadcast system fully.Next, need handle the migration task.The migration task handling comprises two processes, at first read the migration task of broadcasting the server generation fully from being equipped with the multicast data storehouse, according to the priority of task with broadcast strategy execution migration task fully, represent this two processes with migration task management and the execution of migration task here then.Generally, TV station's broadcast system internal migration task management and the execution of migration task can be by application server realizing, certainly in order to improve the framework that fail safe can be adopted master-slave redundancy.
In view of the complexity of media file transmission, present embodiment adopts a kind of distributed structure/architecture, can well realize the migration of media file.Be equipped with broadcast system inside at program, disposed a migration management server and carried out the server cluster that server is formed by many migrations.The migration management server is responsible for loading the migration task from being equipped with the multicast data storehouse, simultaneously server is carried out in all migrations and is managed, and obtains the operation conditions that server is carried out in migration in real time; According to the load balancing strategy, will move the task dynamic assignment and carry out server for migration, carry out server cluster by migration the migration task is carried out concurrent processing, what guarantee to wait to broadcast program file broadcasts efficient automatically fully.Migration management server and migration are carried out server cluster and are adopted distributed structure/architecture, it is advantageous that to improve migration task handling efficient, guarantee that wait to broadcast program casts to the disaster-tolerant backup system on time fully; In addition, adopt migration to carry out server cluster and guarantee that program is equipped with broadcast system and has enough disaster tolerances and be equipped with ability, individual migration is carried out server and is broken down, and can not cause whole professional normal operation to have a strong impact on.
Embodiment three:
Present embodiment is to use the foregoing description to carry out the method for broadcasting disaster-tolerant backup.The described method of present embodiment comprises the process of following operation:
Broadcasting fate fully sets and the redjustment and modification process: comprise preestablishing program from the in advance process of fate N automatically fully broadcast of fully broadcasting buffer memory that be equipped with broadcast system of former broadcast system to the disaster-tolerant backup system, preestablish program and broadcast buffer memory fully to the process of broadcasting fully automatically of fate M in advance of broadcasting broadcast video server fully from what be equipped with broadcast system, and the needs that change according to the business process of N and M being carried out redjustment and modification.
Backup and synchronous process in real time during normal the broadcast: comprise process that media file broadcasts automatically fully, metadata information synchronous process in real time, described metadata information synchronous process in real time comprises the synchronous process of programme of broadcasting in advance, just broadcasts the synchronous process of programme;
The process that the Broadcast Control emergency operation is synchronous: be used for the work station of Broadcast Control fully of disaster-tolerant backup system when accident occurring and the former Broadcast Control work station of former broadcast system and realize the synchronous in real time of Broadcast Control emergency operation.
Broadcast baseband signal output and the process of switching: broadcast the baseband signal switched system and receive the process of broadcasting broadcast video server and broadcasting the broadcast baseband signal of broadcast video server fully and select one road signal wherein to export from former.
Present embodiment when normal the broadcast, need media file broadcast fully automatically with metadata information synchronously in real time; (adjusting program broadcast order temporarily, cancel the broadcast of certain original program etc.) when accident occurring needs the Broadcast Control emergency operation synchronous in real time; Major disaster (earthquake, fire, war etc.) appears in the time of can't broadcasting at former broadcast system, by broadcasting the broadcast baseband signal that system is broadcasted in baseband signal switched system output backup.
The process that media file is broadcast automatically fully: begin program file in former broadcast system moved in disaster-tolerant backup system according to a definite time point every day.The variation of any media file can in time be reflected in the disaster-tolerant backup system in the former broadcast system.The data volume of media file is all very huge, therefore, moves the broadband network that these media files at first must possess enough capacity.But only have enough broadband networks not enough, mix to optimize at the branch of migration task and formulate migration strategy, make full use of the resource that server cluster is carried out in migration, finish the migration of media file with the fastest speed.
Broadcast programme synchronous process in real time in advance: be divided into according to the programme type and broadcast programme in advance to broadcast programme in real time synchronously and just synchronous in real time.In former broadcast system inside, be responsible for broadcasting in advance the programme layout by the former programme editing station of broadcasting, will broadcast programme in advance and be saved in former multicast data storehouse.Broadcast through submitting to after the conventional approval process, notice simultaneously gives out information.Through former broadcast message server forwards, former broadcast acting server and receive message informing after, read from former multicast data storehouse and to broadcast programme in advance, and will broadcast programme in advance by Socket and broadcast acting server fully with what the form of XML file was issued the disaster-tolerant backup system.In the disaster-tolerant backup internal system, broadcast acting server fully and receive after the programme information, broadcast the programme tabulation in advance with what broadcast in advance that programme writes multicast data storehouse fully.The notice that gives out information is simultaneously subscribed to other work stations of the disaster-tolerant backup system of this message and is according to circumstances handled broadcasting programme in advance.Through said process, guarantee disaster-tolerant backup system and former broadcast system to broadcast programme in advance synchronous in real time.
Just broadcasting the in real time synchronous process of programme and broadcasting the program processing in advance similar, in former broadcast system inside, the former Broadcast Control work station that is in major state is responsible for aligning and is broadcast the programme modification of meeting an urgent need, carry out after modification is finished and send the programme operation, the programme of just broadcasting after upgrading is write in the former multicast data storehouse, and the heartbeat PORT COM of process Ethernet sends message, notify the former Broadcast Control work station of controlling state fully more to broadcast programme the first month of the lunar year from former multicast data storehouse, it is synchronous in real time to realize that the active and standby machine of former Broadcast Control work station is just being broadcast programme.Notice simultaneously gives out information, through former broadcast message server forwards, former broadcast acting server and receive message informing after, read from former multicast data storehouse and just to broadcast programme after the renewal, and the programme of just broadcasting after will upgrading by Socket is broadcast acting server fully with what the form of XML file was issued the disaster-tolerant backup system.In the disaster-tolerant backup internal system, after broadcasting acting server fully and receiving programme information, with after upgrading just broadcast that programme writes that the disaster-tolerant backup system is equipped with the multicast data storehouse just broadcast the programme tabulation.Notice simultaneously gives out information, through being equipped with the broadcast message server forwards, after the work station of Broadcast Control fully that is in major state is subscribed to this message informing, load and just broadcast programme after upgrading from being equipped with the multicast data storehouse, and the heartbeat PORT COM notice by Ethernet is in the work station of Broadcast Control fully of controlling state fully and more broadcasts programme the first month of the lunar year from being equipped with the multicast data storehouse.By said process, guarantee that the programme of just broadcasting of disaster-tolerant backup system and former broadcast system upgrades in real time synchronously.
The Broadcast Control emergency operation is synchronous method in real time, in order to guarantee to broadcast fail safe, needs to carry out some Broadcast Control emergency operations in the broadcast process, avoid occurring breaking, broadcasting by mistake, and the bad accident of broadcasting.When meeting accident, (adjust program broadcast order temporarily, cancel the broadcast of certain original program etc.), in former broadcast system inside, the former Broadcast Control work station that is in major state is carried out the Broadcast Control emergency operation, and the heartbeat PORT COM of process Ethernet sends message, notice is controlled the identical control command of former Broadcast Control work station execution of state fully, issue the message informing of emergency operation simultaneously, the time point that has wherein comprised emergency operation, through former broadcast message server forwards, the former acting server of broadcasting of former broadcast system receives this message, former broadcast acting server by Socket with Broadcast Control emergency operation and time point information form with the XML file, broadcast acting server fully through what Ethernet sent to the disaster-tolerant backup system.In the disaster-tolerant backup internal system, broadcast acting server fully and receive after the Broadcast Control emergency operation information, outwards issue by message mode; Process is equipped with after the broadcast message server forwards, and the work station of Broadcast Control fully of major state is subscribed to the message informing of Broadcast Control emergency operation, carries out corresponding Broadcast Control emergency operation; And the heartbeat PORT COM transmission message of process Ethernet, notice is controlled the identical control operation of the work station of Broadcast Control fully execution of state fully.Adopt said method, when meeting accident, guarantee that the Broadcast Control emergency operation of disaster-tolerant backup system and former broadcast system execution is carried out in real time synchronously.
Broadcast baseband signal output and the process of switching: broadcast the baseband signal switched system and receive the broadcast baseband signal of broadcasting broadcast video server and broadcasting broadcast video server fully from former simultaneously; Generally, broadcasting the baseband signal switched system will be from the broadcast baseband signal output of former broadcast system; Occur at former broadcast system under the situation of major disaster (earthquake, fire or war), broadcasting the baseband signal switched system will be from the broadcast baseband signal output of backup broadcast system.So just guaranteed that final broadcast baseband signal still can be broadcasted safely under the situation that causes former broadcast system to paralyse fully because of major disaster.
Embodiment four:
Present embodiment is the improvement of embodiment three, the refinement of the process that to be embodiment three broadcast automatically fully about media file, and flow process is as shown in Figure 3.The process that media file is broadcast automatically fully in the described method of present embodiment comprises that secondary reorganizes and outfit process: media file is fully broadcast buffer memory to fully broadcast automatically fully the broadcasting of video server to the broadcasting fully automatically with media file of buffer memory of broadcasting fully that is equipped with broadcast system of disaster-tolerant backup system from what be equipped with broadcast system from former broadcast system.
Media file is as follows to the step of broadcasting fully automatically of broadcasting buffer memory fully that is equipped with broadcast system of disaster-tolerant backup system from former broadcast system:
24 o'clock sharps of every day, start and broadcast operation flow automatically fully;
Inquiry is equipped with in the multicast data storehouse and meets-N days condition broadcast programme in advance;
From be equipped with the multicast data storehouse, load automatically meet time conditions broadcast programme in advance;
Generate program migration task;
With wait to broadcast program from former broadcast system broadcast fully that buffer memory migrates to broadcast system fully broadcast buffer memory fully;
Media file from be equipped with broadcast system to broadcast buffer memory fully as follows to the step of broadcasting fully automatically of broadcasting video server fully:
24 o'clock sharps of every day, start and broadcast operation flow automatically fully;
Inquiry is equipped with in the multicast data storehouse and meets-M days (condition of M＜N) broadcast programme in advance;
From be equipped with the multicast data storehouse, load automatically meet time conditions broadcast programme in advance;
What coupling was equipped with broadcast system broadcasts related-program media file in the buffer memory fully;
Automatically load the migration task;
With wait to broadcast the program media file from be equipped with broadcast system broadcast fully buffer memory migrate to final be responsible for that program broadcasts broadcast video server fully.
The enforcement thinking of present embodiment is described in detail as follows:
Former broadcast system inside waits to broadcast that program file is broadcast programme in advance according to general editting office and full court is unified program ID, according to formulating the good strategy of broadcasting fully, broadcasts fully to the former memory bank of broadcasting of former broadcast system from outside program manufacturing system, media asset management system automatically.
The broadcasting disaster-tolerant backup internal system is equipped with broadcast system by program and is responsible for realizing that media file is from former broadcast system broadcasting fully automatically to the disaster-tolerant backup system.Broadcasting flow process fully comprises secondary and reorganizes and outfit process: at first, broadcast broadcasting fully automatically of buffer memory from former broadcast system fully to the disaster-tolerant backup system; Secondly, the broadcasting disaster-tolerant backup internal system, media file is from broadcasting buffer memory fully to broadcasting broadcasting fully automatically of video server fully.
Program is equipped with broadcast system inside, disposes GMP (Global Media Prepare) software above the server broadcasting fully, is as the criterion with system clock, 24 o'clock sharps of every day, starts and broadcasts operation flow automatically fully.Broadcast strategy fully according to what preset, inquiry disaster-tolerant backup system is equipped with in the multicast data storehouse and meets-N days condition broadcast programme in advance, that broadcasts after promptly N days broadcasts programme in advance.Next, from be equipped with the multicast data storehouse, load automatically meet time conditions broadcast programme in advance.Wherein, comprise programm name, memory location, reached relevant broadcast information such as unified program ID.GMP unifies program ID according to full court, mates former broadcast system and broadcasts related-program media file in the buffer memory fully.After the match is successful, generate program migration task by GMP, these tasks are saved to the data table related in multicast data storehouse fully.Then, bottom migration management server loads the migration task automatically from being equipped with the multicast data storehouse, and carries out server cluster for migration according to tactful dynamic assignment.Migration is carried out server cluster and is responsible for carrying out program migration task, with wait to broadcast program from former broadcast system broadcast fully that buffer memory migrates to broadcast system fully broadcast buffer memory fully.Consider the characteristics of broadcasting business and media file fully, need long-time concurrent transmission very big relatively look audio file, therefore in system design and actual the construction, adopt the express network system architecture between former broadcast system and the disaster-tolerant backup system, to guarantee enough migration bandwidth.Above step has realized waiting that the one-level of broadcasting the program media file broadcasts fully, promptly broadcasts broadcasting fully automatically of buffer memory from the buffer memory of broadcasting fully of former broadcast system fully to what be equipped with broadcast system.
Program is equipped with broadcast system inside, and GMP is as the criterion with system clock, 24 o'clock sharps of every day, starts and broadcasts operation flow automatically fully.At first inquire about being equipped with in the multicast data storehouse of broadcasting disaster-tolerant backup system meet-M days condition broadcast programme in advance, that broadcasts after promptly M days broadcasts programme in advance.Compare with the above-mentioned flow process of broadcasting fully, broadcast M＜N in the strategy fully, expression M more closes on the time point that starts broadcasting.The value of M and N by the size decision of broadcasting operation flow and memory bank fully, is set before system starts broadcasting by the broadcast management personnel usually in advance, and can adjust and revise after authorizing according to the business variation.Next, from be equipped with the multicast data storehouse, load automatically meet time conditions broadcast programme in advance.Wherein, comprise programm name, memory location, reach relevant broadcast information such as unified program ID.What disaster-tolerant backup internal system, GMP coupling were equipped with broadcast system broadcasts related-program media file in the buffer memory fully.After the match is successful, generate program migration task by GMP, these tasks are saved to the data table related in multicast data storehouse fully.Then, bottom migration management server loads the migration task automatically from database, and carries out server cluster for migration according to tactful dynamic assignment.Migration is carried out server cluster and is responsible for carrying out program migration task, with wait to broadcast the program media file from be equipped with broadcast system broadcast fully buffer memory migrate to final be responsible for that program broadcasts broadcast video server fully.Above step has realized the disaster-tolerant backup internal system, waits to broadcast the program media file and broadcasts buffer memory fully to broadcasting broadcasting fully automatically of video server fully from what be equipped with broadcast system.
In sum, program is equipped with broadcast system and broadcasts strategy fully according to what preset, has finished to wait to broadcast the program media file and broadcast fully automatically to the secondary of disaster-tolerant backup system from former broadcast system.By this process, guaranteed to wait to broadcast the program media file, accurately broadcasting fully of former broadcast system and disaster-tolerant backup internal system, before starting broadcasting, wait to broadcast media file and broadcast video server and broadcast in the video server ready fully former.
Embodiment five:
Present embodiment is the improvement of embodiment three, be embodiment three about broadcasting the refinement of the synchronous process of programme in advance, flow process is as shown in Figure 4.Broadcasting the synchronous process of programme in the described method of present embodiment in advance comprises the steps:
The programme of working out of broadcasting is in advance write former multicast data storehouse;
The former programme editing station notice that gives out information of broadcasting;
The former acting server of broadcasting is received message informing;
The former acting server of broadcasting reads from former multicast data storehouse and broadcasts programme in advance;
The former acting server of broadcasting will be broadcast programme in advance by Socket and issue with the form of XML file and broadcast acting server fully;
Broadcast the programme of broadcasting in advance that acting server will receive fully and write multicast data storehouse fully;
Broadcast the acting server issue fully the message informing of newly broadcasting programme is in advance arranged;
The work station that any needs of disaster-tolerant backup system are broadcast programme in advance can read the new programme of broadcasting in advance from being equipped with after newly broadcasting programme message in advance subscribing in the multicast data storehouse.
The conventional programme editor of TV station operation flow, by programme editing station according to general editting office assign plans single to every day the broadcast items list carry out refinement.According to business setting, layout in advance 1-3 days from now on broadcast programme in advance, programme managed according to date and channel.After broadcasting the programme editor in advance and finishing, be saved in the broadcasting in advance in the programme tabulation of former multicast data storehouse.Then by the special messenger according to business setting, examine respectively, examine broadcasting programme in advance, have only through what examine and broadcast programme in advance and can submit broadcast to.When broadcasting programme editing station fully and carry out to submit the programme operation to, by the message server notice that gives out information, the active and standby machine of former Broadcast Control work station is received message informing by message subscribing, can broadcast programme in advance from the loading of former multicast data storehouse then.
The enforcement thinking of present embodiment is described in detail as follows:
By the responsible layout of broadcasting programme in advance in the programme editing station of former broadcast system, general editting office to be planned slender turning to day broadcast programme, the programme of broadcasting in advance that layout is finished is saved in broadcasting in advance in the single-row table of the former multicast data of former broadcast system storehouse.According to business setting, examine and review operation broadcasting programme in advance by the special messenger.Broadcast programme in advance through what examine, submit to and broadcast by the former programme editing station of broadcasting, notice externally gives out information when carrying out submit operation.
The former acting server of broadcasting of former broadcast system receives through after the message of former broadcast message server forwards, reads from former multicast data storehouse and broadcasts programme in advance.By Socket metadata information is broadcast programme in advance, broadcast acting server fully through what Ethernet sent to the disaster-tolerant backup system with the form of XML file.The acting server of broadcasting fully of disaster-tolerant backup system receives and broadcasts in advance after the programme, writes the disaster-tolerant backup system and is equipped with broadcasting in advance in the single-row table of multicast data storehouse.
Broadcast acting server simultaneously fully to the disaster-tolerant backup system notice that gives out information, process is equipped with after the broadcast message server forwards, all need load the disaster-tolerant backup internal system work station of broadcasting programme in advance and subscribe to after this message, can load and broadcast programme in advance from being equipped with the multicast data storehouse.
As mentioned above, finished broadcast in advance programme from former broadcast system to the disaster-tolerant backup system in real time synchronously, being equipped with all to have preserved in the multicast data storehouse of former broadcast system former multicast data storehouse and disaster-tolerant backup system, broadcast programme in advance.The possible encore that the disaster-tolerant backup system is equipped with in the multicast data storehouse is single, as waiting to broadcast driving and the foundation that the program media file is broadcast to the disaster-tolerant backup system automatically fully from former broadcast system.
Embodiment six:
Present embodiment is the improvement of embodiment three, be embodiment three about just broadcasting the synchronous process refinement of programme, flow process is as shown in Figure 5.Just broadcasting the synchronous process of programme in the described method of present embodiment comprises the steps:
Former broadcast system is revised and is just being broadcast programme, will revise the back programme and be saved in former multicast data storehouse;
The message informing that programme upgrades is just being broadcast in the former Broadcast Control work station issue of major state;
The former acting server of broadcasting is received the message informing of just broadcasting the programme renewal;
The former acting server of broadcasting extracts from database and is just broadcasting programme;
The former acting server of broadcasting will just be broadcast programme by Socket and issue with the form of XML file and broadcast acting server fully;
Broadcast the programme of just broadcasting that acting server will receive fully and write multicast data storehouse fully;
Broadcast the acting server issue fully and just broadcasting the message informing that programme upgrades;
The work station of Broadcast Control fully of major state reads from be equipped with the multicast data storehouse after subscribing to the message of just broadcasting the programme renewal and just broadcasts programme.
After broadcasting programme submission broadcast in advance, enter into TV station and broadcast the operation flow stage, the active and standby machine of former Broadcast Control work station of broadcast system inside all can be subscribed to and load the message of broadcasting programme in advance.Generally, broadcast the operator on duty and see that loading broadcasts after the information of programme in advance, can on be in the former Broadcast Control work station of major state, carry out loading the operation of broadcasting programme in advance, from former multicast data storehouse, add and broadcast programme in advance.At this moment, if be in the state that normally starts broadcasting, broadcast programme in advance and be added into the end of just broadcasting programme, then need to carry out hard disk material checked operation, inquire about the former store status of waiting to broadcast program in the video server of broadcasting by serial ports according to programme, after process acknowledgment of your inquiry material is ready, carry out sending the programme operation.Write just broadcasting in the programme tabulation of former multicast data storehouse with just broadcasting programme, and send message, notify the former Broadcast Control work station of controlling state fully to load and just broadcasting programme from former multicast data storehouse through the Socket heartbeat PORT COM of Ethernet appointment.Like this, the programme of just broadcasting of inner former Broadcast Control work station main frame of former broadcast system and standby host is consistent, and finishes program according to programme control playing device and broadcasts.
For another situation, break state if be in, the former Broadcast Control work station that is in major state is after programme is broadcast in the loading of former multicast data storehouse in advance, need carry out hard disk material checked operation equally, inquire about the former store status of waiting to broadcast program in the video server of broadcasting by serial ports according to programme, after process acknowledgment of your inquiry material is ready, carry out sending the programme operation.Write just broadcasting in the programme tabulation of former multicast data storehouse with just broadcasting programme, and the Socket heartbeat PORT COM transmission message of process Ethernet appointment, notify the former Broadcast Control work station of controlling state fully just broadcasting from former multicast data storehouse to load the programme tabulation and just broadcasting programme.
Break state though be in, first the program that requires just broadcasting programme must be set to regularly broadcast type.Then, carry out the operation of starting broadcasting on the former Broadcast Control work station of major state, the Socket heartbeat PORT COM through the Ethernet appointment sends message equally, notifies the former Broadcast Control work station of controlling state fully to carry out the operation of starting broadcasting synchronously.Former like this broadcast system inside, between the active and standby machine of former Broadcast Control work station, no matter just broadcasting programme still is that control operation keeps in real time synchronously, and the control playing device is finished program and is broadcasted.
Certainly broadcast operation flow for reality, also can run into the situation that programme is met an urgent need and revised of broadcasting that aligns.Usually carry out live or the application scenarios of relaying under because the time of starting broadcasting and the concluding time of live show are uncertain, the time of starting broadcasting of subsequent program is exerted an influence through regular meeting, situations such as discontinuous or covering of broadcast time appear.Therefore, need align and broadcast the programme modification of meeting an urgent need, adjust starting broadcasting the time of subsequent program.In addition, also have some cases of emergency, that receives temporarily in the broadcast process that general editting office assigns just broadcasts the emergent amendment advice of programme, is aligned in the broadcast process by the special messenger and broadcasts the programme modification of meeting an urgent need.
The enforcement thinking of present embodiment is described in detail as follows:
Former broadcast system inside aligns by the former Broadcast Control work station that is in major state and to broadcast the programme modification of meeting an urgent need, and carries out sending the programme operation, and the programme of just broadcasting after revising is saved in just broadcasting in the programme tabulation of former multicast data storehouse.And the Socket heartbeat PORT COM transmission message of process Ethernet appointment, notify the former Broadcast Control work station of controlling state fully just broadcasting from former multicast data storehouse to load the programme tabulation and just broadcasting programme.
Issue the message of more broadcasting programme the first month of the lunar year simultaneously, the former acting server of broadcasting of former broadcast system receives through after the former broadcast message server forwards notice, read from former multicast data storehouse and just to broadcast programme after the renewal, by Socket metadata information is just being broadcast programme, broadcasting acting server fully through what Ethernet sent to the disaster-tolerant backup system with the form of XML file.
In the disaster-tolerant backup internal system, broadcast acting server fully and receive and just broadcast programme after the renewal, write the disaster-tolerant backup system and be equipped with broadcasting in advance in the single-row table of multicast data storehouse, broadcast acting server simultaneously fully and issue the message of more broadcasting programme the first month of the lunar year.Process is equipped with after the broadcast message server forwards, the disaster-tolerant backup internal system is in the work station of Broadcast Control fully of major state and subscribes to after this message, load and just broadcast programme after upgrading from being equipped with the multicast data storehouse, and sending message through the Socket heartbeat PORT COM of Ethernet appointment, notice is in the work station of Broadcast Control fully of controlling state fully and loads and just broadcast programme after upgrading from being equipped with the multicast data storehouse.
As mentioned above, finished just broadcast programme from former broadcast system to the disaster-tolerant backup system in real time synchronously, because it is synchronous in real time just to broadcast programme, the broadcasting disaster-tolerant backup system follows former broadcast system and broadcasts synchronously, and the broadcast baseband signal that two systems send is synchronous in real time.
Embodiment seven:
Present embodiment is the improvement of embodiment three, be embodiment three about the synchronous process refinement of Broadcast Control emergency operation, flow process is as shown in Figure 6.The synchronous process of Broadcast Control emergency operation comprises the steps: in the described method of present embodiment
Occur unexpectedly, broadcast the person on duty and carry out emergency operation being on the former Broadcast Control work station of major state, and the message of emergency operation is carried out in issue;
Notice is in the former Broadcast Control work station of controlling state fully and carries out same operation, transmits the message of emergency operation through former broadcast message server issue simultaneously;
The former acting server of broadcasting sends emergency operation message to broadcasting acting server fully;
Broadcast fully that acting server is received emergency operation message after be equipped with broadcast message server forwards emergency operation message;
The work station of Broadcast Control fully that is in major state receives that carrying out emergency operation and issue after the emergency operation message carries out the message informing of emergency operation and be in the work station of Broadcast Control fully of controlling state fully;
Be in and carry out emergency operation after the work station of Broadcast Control fully of controlling state is fully received emergency operation message.
TV station is very high to broadcasting security requirement.In the normal broadcast process, unusual situation occurs, need to broadcast the operator on duty as the case may be, carry out corresponding Broadcast Control emergency operation, guarantee the fail safe of broadcasting, avoid occurring breaking, mistake broadcasts if run into broadcasting signal, and bad broadcast accident such as broadcast.
Broadcast Control emergency operation commonly used comprises Take, keeps, cuts emergent source or the like.The Take operation, be generally used for application scenarios live or that relay, because the concluding time of on-site signal might shift to an earlier date or delay, therefore wait in the programme that the time of starting broadcasting of broadcasting program can't determine, usually be in state undetermined, after receiving the on-site signal end notification, broadcast the operator on duty and carry out that the Take operation is emergent to be switched to program to be broadcast and carry out order broadcast; Keep operation, be generally used for application scenarios live or that relay, at the on-site signal that is broadcasting, if the on-site signal concluding time is undetermined and surpass the concluding time of expecting, need so to carry out and keep operating, the broadcast time of current like this program changes to random length, and the time of starting broadcasting of subsequent program is undetermined; Cut the emergency signal operation, be generally used for broadcasting signal and unusual situation occurs, the operator on duty carries out this operation, is the emergency signal source by broadcasting the software control switching device with the pad signal that broadcasting signal switches to system intialization, treat broadcasting signal recover normal after manually, the control switch switches back to correct broadcasting signal source with broadcasting signal.
The thinking that present embodiment is implemented is described in detail as follows:
In former broadcast system inside, broadcast the Broadcast Control emergency operation that the operator on duty carries out in the broadcast process on the former Broadcast Control work station of major state, comprise Take, keep, cut emergency signal or the like, Socket heartbeat PORT COM through the Ethernet appointment sends message, and notice is controlled the identical Broadcast Control emergency operation of former Broadcast Control work station execution of state fully.
Outwards issue the message informing of emergency operation simultaneously, wherein comprised the time point of emergency operation.Through former broadcast message server forwards, the former acting server of broadcasting of former broadcast system receives this message.Former broadcast system former broadcast acting server by Socket, with metadata information Broadcast Control emergency operation and time point, broadcasts acting server with the form of XML file fully through what Ethernet sent to the disaster-tolerant backup system.
In the disaster-tolerant backup internal system, broadcast acting server fully and receive after the emergent behaviour's order of Broadcast Control, outwards issue by message mode.After the message server forwarding, the work station of Broadcast Control fully of disaster-tolerant backup internal system major state is subscribed to the message informing of Broadcast Control emergency operation, carries out corresponding Broadcast Control emergency operation; And the Socket heartbeat PORT COM transmission message of process Ethernet appointment, notice is controlled the identical control operation of the work station of Broadcast Control fully execution of state fully.The disaster-tolerant backup internal system between the active and standby machine of Broadcast Control work station, realizes the synchronous of Broadcast Control emergency operation fully.
As mentioned above, finished the Broadcast Control emergency operation from former broadcast system to the disaster-tolerant backup system synchronously in real time, the active and standby machine of the work station of Broadcast Control fully of disaster-tolerant backup system is followed former broadcast system and is carried out corresponding Broadcast Control emergency operation, guarantees that following former broadcast system broadcasts synchronously.
It should be noted that at last, below only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to the preferred arrangement scheme, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention (such as annexation between each work station, server, the subsystem or the like in the connected mode of former broadcast system and disaster-tolerant backup system, the disaster-tolerant backup system), and not break away from the spirit and scope of technical solution of the present invention.

Claims (7)

1. the system of a broadcasting disaster-tolerant backup, it is characterized in that, described system comprises: former broadcast system, disaster-tolerant backup system and broadcast baseband signal switched system, described former broadcast system comprises: the former programme editing station of broadcasting, with described former what broadcast that programme editing station is connected is former multicast data storehouse and former broadcast message server, described former multicast data storehouse is connected with former Broadcast Control work station main frame, former Broadcast Control work station standby host, the former acting server of broadcasting; Described former broadcast message server is connected with former Broadcast Control work station main frame, former Broadcast Control work station standby host, the former acting server of broadcasting, described former Broadcast Control work station main frame and former Broadcast Control work station standby host interconnect, and described former Broadcast Control work station main frame is connected with the former broadcast video server of broadcasting with former Broadcast Control work station standby host; Described disaster-tolerant backup system comprises: broadcast programme editing station fully, described broadcast fully programme editing station be equipped with the multicast data storehouse and fully the broadcast message server be connected, described broadcast message server and the Broadcast Control work station main frame fully of being equipped with, Broadcast Control work station standby host fully, broadcasting acting server fully connects, described multicast data storehouse and the Broadcast Control work station main frame fully of being equipped with, Broadcast Control work station standby host fully, broadcast acting server fully, program is equipped with broadcast system and connects, the described work station of Broadcast Control fully and fully Broadcast Control work station standby host interconnect, the described work station of Broadcast Control fully main frame and Broadcast Control work station standby host fully with broadcast broadcast video server fully and be connected; Described former broadcast acting server by gigabit Ethernet with broadcast acting server fully and be connected; Described program is equipped with broadcast system and is connected with the former memory bank of broadcasting of former broadcast system by the express network system, and with the disaster-tolerant backup system in broadcast memory bank fully and be connected; Described broadcast baseband signal switched system is broadcast broadcast video server and is broadcast broadcast video server fully and link to each other with former.
2. according to the described system of claim 1, it is characterized in that, described program is equipped with broadcast system and comprises: broadcast server fully, the described server of broadcasting fully is connected with the migration management server, described migration management server is carried out server cluster with the migration of being made up of a plurality of migrations execution servers and is connected, and migration is carried out server cluster and is connected with the former memory bank of broadcasting fully of broadcasting memory bank, disaster-tolerant backup system of former broadcast system; Described former broadcast memory bank comprise former broadcast video server and former broadcast system broadcast buffer memory fully; Described broadcast fully memory bank comprise broadcast video server fully and be equipped with broadcast system broadcast buffer memory fully.
3. use the method for a kind of broadcasting disaster-tolerant backup of the described system of claim 2, it is characterized in that described method comprises the process of following operation:
Broadcasting fate fully sets and the redjustment and modification process: comprise preestablishing program from the in advance process of fate N automatically fully broadcast of fully broadcasting buffer memory that be equipped with broadcast system of former broadcast system to the disaster-tolerant backup system, preestablish program and broadcast buffer memory fully to the process of broadcasting fully automatically of fate M in advance of broadcasting video server fully from what be equipped with broadcast system, and the needs that change according to the business process of N and M being carried out redjustment and modification.
Backup and real-time synchronous process during normal the broadcast, during described normal broadcast backup and in real time synchronous process comprise: the process that media file is broadcast automatically fully, metadata information be synchronous process in real time, and described metadata information synchronous process in real time comprises the synchronous process of programme of broadcasting in advance, just broadcasts the synchronous process of programme;
The process that the Broadcast Control emergency operation is synchronous: be used for the work station of Broadcast Control fully of disaster-tolerant backup system when accident occurring and the former Broadcast Control work station of former broadcast system and realize the synchronous in real time of Broadcast Control emergency operation.
Broadcast baseband signal output and the process of switching: broadcast the baseband signal switched system and receive from former and broadcast broadcast video server and broadcast the broadcast baseband signal of broadcast video server fully and select the wherein process of one road signal output, the steps include: to broadcast the reception of baseband signal switched system from the former broadcast baseband signal of broadcasting broadcast video server and broadcasting broadcast video server fully; Under the normal operation, broadcast the output of baseband signal switched system from the former broadcast baseband signal of broadcasting broadcast video server; Take place under the great abnormal conditions at former broadcast system, broadcast baseband signal switched system is exported and is provided the broadcast baseband signal of broadcasting broadcast video server for oneself.
4. method according to claim 3, it is characterized in that the process that media file is broadcast automatically fully in the described method comprises that secondary reorganizes and outfit process: media file is fully broadcast buffer memory to fully broadcast automatically fully the broadcasting of video server to the broadcasting fully automatically with media file of buffer memory of broadcasting fully that is equipped with broadcast system of disaster-tolerant backup system from what be equipped with broadcast system from former broadcast system;
Media file is as follows to the step of broadcasting fully automatically of broadcasting buffer memory fully that is equipped with broadcast system of disaster-tolerant backup system from former broadcast system:
24 o'clock sharps of every day, start and broadcast operation flow automatically fully;
Inquiry is equipped with in the multicast data storehouse and meets-N days condition broadcast programme in advance;
From be equipped with the multicast data storehouse, load automatically meet time conditions broadcast programme in advance;
Generate program migration task;
With wait to broadcast program from former broadcast system broadcast fully that buffer memory migrates to broadcast system fully broadcast buffer memory fully;
Media file from be equipped with broadcast system to broadcast buffer memory fully as follows to the step of broadcasting fully automatically of broadcasting video server fully:
24 o'clock sharps of every day, start and broadcast operation flow automatically fully;
Inquiry is equipped with in the multicast data storehouse and meets-M days condition broadcast programme in advance;
From be equipped with the multicast data storehouse, load automatically meet time conditions broadcast programme in advance;
What coupling was equipped with broadcast system broadcasts related-program media file in the buffer memory fully;
Automatically load the migration task;
With wait to broadcast the program media file from be equipped with broadcast system broadcast fully buffer memory migrate to final be responsible for that program broadcasts broadcast video server fully.
5. method according to claim 3 is characterized in that, broadcasts the synchronous process of programme in the described method in advance and comprises the steps:
The programme of working out of broadcasting is in advance write former multicast data storehouse;
The former programme editing station notice that gives out information of broadcasting;
The former acting server of broadcasting is received message informing;
The former acting server of broadcasting reads from former multicast data storehouse and broadcasts programme in advance;
The former acting server of broadcasting will be broadcast programme in advance by Socket and issue with the form of XML file and broadcast acting server fully;
Broadcast the programme of broadcasting in advance that acting server will receive fully and write multicast data storehouse fully;
Broadcast the acting server issue fully the message informing of newly broadcasting programme is in advance arranged;
The work station that any needs of disaster-tolerant backup system are broadcast programme in advance can read the new programme of broadcasting in advance from being equipped with after newly broadcasting programme message in advance subscribing in the multicast data storehouse.
6. method according to claim 3 is characterized in that, is just broadcasting the synchronous process of programme in the described method and is comprising the steps:
Former broadcast system is revised and is just being broadcast programme, will revise the back programme and be saved in former multicast data storehouse;
The message informing that programme upgrades is just being broadcast in the former Broadcast Control work station issue of major state;
The former acting server of broadcasting is received the message informing of just broadcasting the programme renewal;
The former acting server of broadcasting extracts from former multicast data storehouse and is just broadcasting programme;
The former acting server of broadcasting will just be broadcast programme by Socket and issue with the form of XML file and broadcast acting server fully;
Broadcast the programme of just broadcasting that acting server will receive fully and write multicast data storehouse fully;
Broadcast the acting server issue fully and just broadcasting the message informing that programme upgrades;
The work station of Broadcast Control fully of major state reads from be equipped with the multicast data storehouse after subscribing to the message of just broadcasting the programme renewal and just broadcasts programme.
7. method according to claim 3 is characterized in that, the synchronous process of Broadcast Control emergency operation comprises the steps: in the described method
Accident occurs, broadcast the person on duty and on the former Broadcast Control work station of major state, carry out emergency operation;
Notice is controlled the same operation of former Broadcast Control work station execution of state fully, and the while is through the message of former broadcast message server issue forwarding emergency operation;
The former acting server of broadcasting sends emergency operation message to broadcasting acting server fully;
Broadcast fully that acting server is received emergency operation message after be equipped with emergency operation of broadcast message server forwards and time point message;
The work station of Broadcast Control fully of major state is carried out emergency operation and is issued the work station of Broadcast Control fully that the message informing of carrying out emergency operation is controlled state fully after receiving emergency operation message;
After receiving emergency operation message, the work station of Broadcast Control fully of controlling state fully carries out emergency operation.
CN200910311327A 2009-12-11 2009-12-11 System and method for broadcasting disaster-tolerant backup Active CN101719923B (en)

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