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CN104023167B - Emergent standby broadcast system and its standby broadcasting method - Google Patents

Emergent standby broadcast system and its standby broadcasting method Download PDF

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Publication number
CN104023167B
CN104023167B CN201410132631.9A CN201410132631A CN104023167B CN 104023167 B CN104023167 B CN 104023167B CN 201410132631 A CN201410132631 A CN 201410132631A CN 104023167 B CN104023167 B CN 104023167B
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CN
China
Prior art keywords
migration
video recorder
work station
clip file
task
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CN201410132631.9A
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Chinese (zh)
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CN104023167A (en
Inventor
薛兵
吴昊
毛敏明
付伟
袁志明
顾国颖
钱门慧
王悦
陈辉
椿原靖
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGXI PROVINCE RADIO & TELEVISION GROUP Co Ltd
Panasonic Corp of China
Beijing Dayang Technology Development Inc
Original Assignee
JIANGXI PROVINCE RADIO & TELEVISION GROUP Co Ltd
Panasonic Corp of China
Beijing Dayang Technology Development Inc
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Priority to CN201410132631.9A priority Critical patent/CN104023167B/en
Publication of CN104023167A publication Critical patent/CN104023167A/en
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Publication of CN104023167B publication Critical patent/CN104023167B/en
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Abstract

The present invention provides a kind of emergent standby broadcast system and its standby broadcasting method, and the emergent standby broadcast system includes:The non-video recorder compiled work station, can use professional storage card, the emergent standby broadcast system also includes:Storage device, monitor workstation, migration work station, ONU On-Air Workstation and the migration/database server being connected with the non-volume work station, the video recorder by network.The circuit that instruction is broadcast in transmission control is also associated between the video recorder and the ONU On-Air Workstation.The present invention can realize broadcasting the packing of material clip file, transmission and broadcasting overall network from standby, have the advantages that low cost, stability are high.

Description

Emergent standby broadcast system and its standby broadcasting method
[technical field]
The present invention relates to the emergent standby broadcast system in studio and its standby broadcasting method, especially it is a kind of using specialty storage card as Broadcast the emergent standby broadcast system of networking and its standby broadcasting method of medium.
[background technology]
At present, the emergent standby broadcast system in the studio of main flow has the emergent broadcast system of tape and emergent two kinds of the broadcast system of hard disk.
The emergent broadcast system of tape possesses certain reliability, but does not meet trend and the requirement of networking broadcast.First, Need the content broadcasted all must manually be recorded on tape area is made, and each program will individually take a disk magnetic Band, causes the waste of resource;Then, recording the tape for completing needs to be sent to studio, is prepared to play by special video reproduction personnel, Each step is required for the participation of people, leverages the emergent efficiency broadcast.
For the emergent broadcast system of hard disk is with respect to the emergent broadcast system of tape, studio can be by net after completing for program Network directly invokes Storyboard and is broadcasted, and is a kind of progress in efficiency, while also saving the manpower and tape resource of preciousness. But, the emergent broadcast system of hard disk is limited by the stability of program Storyboard correctness in itself and network, there is reliability not Problem high.
Technology is continued to develop at any time, is at present occurred in that and to be used professional storage card as a new generation's video recording for playing medium Machine.Compared with normal domestic use/consumer level storage card, professional storage card has outstanding physically and electrically characteristic, with antidetonation, passes Defeated fireballing feature.
Such as PANASONIC is proposed the use P2 of a new generation(Professional plug_in card, professional plug-in card Formula)Storage card as storage medium P2 video recorders.P2 cards use metal package, unusually strong, with outstanding anti-vibration And anti-collision performance, to meet the use of P2 video cameras.Importantly, P2 card small volumes, lightweight, capacity is big, with expansion Malleability, this makes the mobility of news collection enter a New Times.P2 serial equipments are recorded using MXF forms, are passed through This file format can carry out news production using PC.P2 platforms machine can establish the scene of index with random read take, carry out At once play and on-line normalization.P2 cards are directly inserted into the PC draw-in grooves on PC such that it is able to read data at once and entered Row non-linear editing and data are transmitted, without digitized processing.
In addition, Sony Corporation is proposed uses SXS specialty storage cards as the video recorder for playing medium.
But, existing these are also only limitted to the broadcasting of common video and audio using the application of the video recorder of professional memory card And recording, the role of conventional video cassette recorder and tape is substantially simply instead of, it is not applied to the emergent broadcast of networking.
[content of the invention]
[technical problem]
It is contemplated that being directed to the problems of the prior art, there is provided the professional storage card of one kind application and network technology are realized The emergent standby emergent standby broadcast system broadcast and emergent standby broadcasting method.
[solution]
The present invention provides a kind of emergent standby broadcast system, and it includes:It is non-to compile work station, the video recording of professional storage card be used Machine, it is characterised in that:The emergent standby broadcast system also includes:It is connected with the non-volume work station, the video recorder by network Storage device, monitor workstation, migration work station, ONU On-Air Workstation and migration/database server, the video recorder with The circuit that instruction is broadcast in transmission control is also associated between the ONU On-Air Workstation.
The non-volume work station includes:Material packaged unit, it is used to pack to generate and is adapted to the lattice that the video recorder is played The material clip file of formula, and by material clip file storage in the storage device.
The monitor workstation includes:Material monitoring unit, it is used to periodically check the storage device, to determine in institute State in storage device with the presence or absence of the material clip file, material information acquisition unit, it is used to monitor single in the material In the case that unit determines to have the material clip file, the information of the material clip file, and task registration form are obtained Unit, it is used for the described information got according to the material information acquisition unit, is registered to the migration/database server Migration task.
The migration work station includes:Task monitors unit, it is used to periodically check the migration/database server, To determine whether there is the migration task, migration units, it is used to determine there is the migration in the task monitors unit In the case of task, the material clip file is sent on the professional storage card of the video recorder from the storage device, And notification unit, it is used to, when the migration units complete to transmit, notify that task is complete to the migration/database server Into.
The ONU On-Air Workstation includes:Control play-out unit, its circuit for being used to be broadcast by the transmission control instruction, to institute State video recorder and send the instruction for playing the material clip file.
The video recorder includes:Broadcast unit, it is used for the play instruction according to the control play-out unit, plays described Material clip file.
[invention beneficial effect]
The present invention realizes video recorder and non-volume work station, the networking such as server from standby due to using above-mentioned technical proposal Broadcast the packing of material clip file, transmission and play overall network, and with traditional tape and hard-disc type for broadcast system phase Than, with low cost, stability is high the characteristics of.
[brief description of the drawings]
Fig. 1 is the hardware block diagram of the emergent standby broadcast system of the first embodiment of the present invention;
Fig. 2 is the software architecture diagram of the emergent standby broadcast system of the first embodiment of the present invention;
Fig. 3 is the flow chart of the course of work of the emergent standby broadcast system of the first embodiment of the present invention.
[specific embodiment]
Core concept of the invention is will to compile the networking such as work station, server with non-using the video recorder of professional storage card, Realize that overall network is packed, transmits and played to standby material clip file of broadcasting.
Specific embodiment of the invention is illustrated below in conjunction with the accompanying drawings.
[first embodiment]
The hardware configuration of the first embodiment of the present invention is described referring to Fig. 1.
The emergent standby broadcast system of first embodiment of the invention, it includes:It is non-to compile work station, professional storage card be used Video recorder, it is characterised in that:The emergent standby broadcast system also includes:By network and the non-volume work station, the video recorder The storage device of connection, monitor workstation, migration work station, ONU On-Air Workstation and migration/database server.
The circuit that instruction is broadcast in transmission control is also associated between the video recorder and the ONU On-Air Workstation.
In the example depicted in fig. 1, it is non-to compile work station, monitor workstation, migration work station, ONU On-Air Workstation and move Shifting/database server is computer.Here, omitting the description to hardware structure of computer and operation principle.The record Camera is Panasonic's AJ-HPD2500 video recorders of current market use P2 specialty storage cards on sale, and it possesses broadcast level video and audio File record playback and traditional specialty video recorder input/output interface, here, omit to professional video recorder hardware configuration and The description of operation principle.
AJ-HPD2500 applied in the first example possesses following functions:AJ-HPD2500 is furnished with an ethernet side Mouth (1000Base-T/100Base-TX/10Base-T), possesses following network function:In Fig. 1 examples, AJ-HPD2500 video recordings Machine is connected by ethernet port with migration work station, is received the video and audio file from migration work station and is stored in insertion On P2 cards in AJ-HPD2500 video recorders;AJ-HPD2500 can be provided to migration work station and can be described to have inserted AJ-HPD2500 The csv file of each P2 cards residual capacity in video recorder.
AJ-HPD2500 is configured with RS-422 Remote Control Interfaces, RS-232C Remote Control Interfaces(For PC and other IT systems)And Row Remote Control Interface and encoder Remote Control Interface, flexible system configuration can be realized by these interfaces.In Fig. 1 examples, AJ- The RS422 interfaces of HPD2500 video recorders are connected by data wire with the RS422 interfaces of the computer of ONU On-Air Workstation, are constituted and are passed It is defeated to control the circuit for broadcasting instruction.
Below, reference picture 2 describes the software configuration of the first embodiment of the present invention.
The non-volume work station includes:Material packaged unit, it is used to pack to generate and is adapted to the lattice that the video recorder is played The material clip file of formula, and by material clip file storage in the storage device.
The monitor workstation includes:Material monitoring unit, it is used to periodically check the storage device, to determine in institute State in storage device with the presence or absence of the material clip file, material information acquisition unit, it is used to monitor single in the material In the case that unit determines to have the material clip file, the information of the material clip file, and task registration form are obtained Unit, it is used for the described information got according to the material information acquisition unit, is registered to the migration/database server Migration task.
The migration work station includes:Task monitors unit, it is used to periodically check the migration/database server, To determine whether there is the migration task, migration units, it is used to determine there is the migration in the task monitors unit In the case of task, the material clip file is sent on the professional storage card of the video recorder from the storage device, And notification unit, it is used to, when the migration units complete to transmit, notify that task is complete to the migration/database server Into.
The ONU On-Air Workstation includes:Control play-out unit, its circuit for being used to be broadcast by the transmission control instruction, to institute State video recorder and send the instruction for playing the material clip file.
The video recorder includes:Broadcast unit, it is used for the play instruction according to the control play-out unit, plays described Material clip file.
The above-mentioned software configuration of the first embodiment of the present invention, by each work station, the computer and video recording of server CPU in machine is by corresponding software module(Program)From nonvolatile memory(Such as hard disk, ROM or FLASH etc.)Loading Run to realize in RAM.
Next, the flow chart of reference picture 3 describes the course of work of emergent standby broadcast system of the invention.
First, at non-volume work station end, in the step s 100, the standby file packing generation broadcast is adapted to the video recording machine sowing Put the material clip file of form(The fragment metadata file of video and audio file and XML format including MXF forms), and will The material clip file storage is in storage device(Such as disk array etc.).
Then, at monitoring work station end, in step S101, periodically(Such as 5 minutes)Storage device is checked, to determine in institute State in storage device with the presence or absence of the material clip file(Need the standby material clip file broadcast).If in storage device not There is the material clip file("No" in step S101), then process and wait predetermined time interval(Such as 5 minutes), to enter Row is checked next time, if there is the material clip file in the storage device("Yes" in step S101), then process Into step S102.
In step S102, the material clip file is analyzed, to obtain the information of material clip file.Specifically, supervise XML file in control P2 files under CLIP files(Material fragment metadata file), the CLIP files in P2 files are viewed XML file under folder, after new XML file is monitored, parses to XML file, obtains material clip file information(For example Title, GUID(Unique mark), file path, creation time etc.), then, treatment enters step S103.
It should be noted that because P2 specialty storage cards are usually FAT32 forms, therefore single file requirement is no more than 4G, when material fragment is more than 4G, P2 specialty storage cards take a point file record, and by corresponding XML file(Material fragment Meta data file)It is associated, therefore when material parsing is carried out, the new XML texts under the CLIP files under monitoring P2 files Whether, it is necessary to detect whether property relevant with other XML files during part, i.e., it is a partial content for material fragment.
In step S103, according to the material clip file information for obtaining to the migration/database server registration migration Task.
Specifically, in single material fragment(No more than 4G)In the case of, by its corresponding XML file(Material fragment Metadata)Treatment mark is stamped, while the unique MSSID of generation one is set in the SCENO fields in XML file, and will In MSSID write into Databasce this task, the element for additionally being obtained in step s 102 to the migration/database server registration Material clip file information.
In single material fragment(More than 4G)In the case of, detect its related multiple XML file of institute(Material fragment unit number According to file), the mark for the treatment of is stamped to all subtasks, and generate a unique MSSID setting to the related XML texts of institute In SCENO fields in part, and MSSID write-ins migrating data place there is into a subtask.
Then, at migration work station end, in step S104, the migrating data storehouse is periodically checked, to determine whether there is Migration task.When determining to have migration task in step S104("Yes" in step S104), treatment enter step S105. In step S105, the material clip file is sent to the professional storage card of the video recorder from storage device, conversely, continuing Wait, check next time.The transmission of the present embodiment is transmitted using FTP, but the invention is not restricted to this, can use other Host-host protocol, such as TCP/IP etc..
Specifically, in transmission, migration work station obtains csv file from the video recorder first, then, according to CSV The residual capacity of each P2 storage card of file analysis video recorder, by the size of residual capacity and the material clip file to be transmitted It is compared, so as to select the P2 storage cards of enough remaining spaces as the destination of transmission.
In addition, in transmit process, it is contemplated that pre- as thering are other materials to carry out on the P2 storage cards of transfer destination The operation such as volume or broadcast, then before transmission, it is determined whether there are aforesaid operations, when there are aforesaid operations, pause transmission is treated When aforesaid operations are completed, continue to transmit.
When transmission is finished, in step s 106, notify that task is completed to the migration/database server.In this reality Apply in example, such as when task creation, the treatment of setting task is designated 0, when the task of completion, task treatment mark is changed to 1.
Afterwards, when standby sowing time is needed, in ONU On-Air Workstation, in step s 107, by RSS422 circuits to the video recording Machine sends and broadcasts instruction.
Then, in video recording generator terminal, in step S108, received from the ONU On-Air Workstation according to by RSS422 circuits Instruction, broadcasted.
It should be noted that in the present embodiment, VDCP is used between ONU On-Air Workstation and video recorder(Video discs are communicated Agreement, Video Disk Communications Protocol)As the agreement that control is broadcasted.
When broadcasting, ONU On-Air Workstation is first turned on broadcasting list, and each entry in broadcasting list has recorded corresponding element Material GUID, position of the material on video recorder is obtained then according to GUID, is broadcasted by VDCP protocol integrated test system P2 video recorders
[other embodiment]
In the first embodiment, using the video recorder of P2 storage cards as an example, still the invention is not restricted to this, such as may be used Possess with use and receive the transmission of FTP or TCP/IP modes file and receive the broadcast of VDCP protocol integrated test systems, deposited using other specialties The video recorder of card storage.
In addition, in the first embodiment, connection network is wired ethernet, but can be to be deformed, such as network can To use WLAN(WLAN)Deng.
More than, with reference to detailed or specific implementation method, the present invention is described, but those skilled in the art manage Solution:Various changes and amendment can be carried out on the premise of spirit and scope of the present utility model is not departed from.
[industrial applicibility]
The present invention will use the video recorder of professional storage card to compile the networking such as work station, server with non-, realize for material is broadcast Clip file packing, transmission and broadcasting overall network, and compared with traditional tape and hard-disc type are for broadcast system, have Low cost, stability are high.

Claims (2)

1. a kind of emergent for broadcast system, it includes:It is non-to compile work station, be existed using the video recorder of professional storage card, its feature In:The emergent standby broadcast system also includes:By network with it is described it is non-compile storage device that work station, the video recorder be connected, Monitor workstation, migration work station, ONU On-Air Workstation and migration/database server, in the video recorder and the broadcast work The circuit that instruction is broadcast in transmission control is also associated between standing;
Wherein, the non-volume work station includes:
Material packaged unit, its generation that is used to packing is adapted to the material clip file of the form that the video recorder is played, and by institute The storage of material clip file is stated in the storage device;
The monitor workstation includes:
Material monitoring unit, it is used to periodically check the storage device, to determine to whether there is institute in the storage device Material clip file is stated,
Material information acquisition unit, it is used for the situation that there is the material clip file in material monitoring unit determination Under, the information of the material clip file is obtained, and
Task registration unit, it is used for the described information got according to the material information acquisition unit, to the migration/number Task is migrated according to storehouse server registers;
The migration work station includes:
Task monitors unit, it is used to periodically check the migration/database server, is appointed with determining whether there is the migration Business,
Migration units, it is used in the case where the task monitors unit determines to have the migration task, by the material Clip file is sent on the professional storage card of the video recorder from the storage device, and
Notification unit, it is used to, when the migration units complete to transmit, notify that task is complete to the migration/database server Into;
The ONU On-Air Workstation includes:
Control play-out unit, its circuit for being used to be broadcast by the transmission control instruction is sent to the video recorder and plays the element The instruction of material clip file;
The video recorder includes:
Broadcast unit, it is used for the play instruction according to the control play-out unit, plays the material clip file.
2. a kind of to meet an urgent need for the standby broadcasting method of broadcast system, the emergent standby broadcast system includes:It is non-to compile work station, specialty be used The video recorder of storage card, by network with it is described it is non-compile storage device, monitor workstation that work station, the video recorder be connected, Migration work station, ONU On-Air Workstation and migration/database server, also connect between the video recorder and the ONU On-Air Workstation It is connected to the circuit that instruction is broadcast in transmission control;The standby broadcasting method comprises the following steps:
It is described it is non-compile the material clip file that work station generation is adapted to the form that the video recorder is played, and by the material fragment File is stored in the storage device;
The monitor workstation periodically checks the storage device, to determine to whether there is the material in the storage device Clip file;
In the case where the monitor workstation determines to have the material clip file, the letter of the material clip file is obtained Breath;
According to the information of the material clip file for getting, to the migration/database server registration migration task;
The migration work station periodically checks the migration/database server, to determine whether there is the migration task;
In the case where the migration work station determines to have the migration task, by the material clip file from the storage Device is sent on the professional storage card of the video recorder;
When transmission is completed, the migration work station notifies that task is completed to the migration/database server;
The ONU On-Air Workstation broadcasts the circuit of instruction via the transmission control, is sent to the video recorder and plays the material fragment The instruction of file;
Play instruction of the video recorder according to, plays the material clip file.
CN201410132631.9A 2014-04-03 2014-04-03 Emergent standby broadcast system and its standby broadcasting method Active CN104023167B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101188696A (en) * 2007-11-19 2008-05-28 新奥特(北京)视频技术有限公司 A system for separation, preparation and playing of TV station caption and video
US7889964B1 (en) * 1998-07-30 2011-02-15 Tivo Inc. Closed caption tagging system
CN102256162A (en) * 2011-07-22 2011-11-23 网宿科技股份有限公司 Method and system for optimizing media-on-demand based on real-time file format conversion
CN102780836A (en) * 2012-04-24 2012-11-14 苏州市广播电视总台 High-standard definition compatibility and high-safety news non-linear editing network system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87209241U (en) * 1987-06-20 1988-08-10 国家建材局管理干部学院 Automatic broadcast-controller of <vhs> video system
GB9920452D0 (en) * 1999-08-27 1999-11-03 Gemstar Dev Limited An interactive television system
CN2612162Y (en) * 2002-12-04 2004-04-14 大连科瑞电子有限公司 Vehicle digital monitor
EP1548742A1 (en) * 2003-11-28 2005-06-29 Thomson Broadband UK Ltd Electronic apparatus with a data storage device
WO2006009105A1 (en) * 2004-07-20 2006-01-26 Matsushita Electric Industrial Co., Ltd. Video processing device and its method
WO2007035317A2 (en) * 2005-09-16 2007-03-29 Snapse, Inc. System and method for providing a media content exchange
CN102833468B (en) * 2012-09-10 2014-03-12 中央电视台 PGM broadcast master-slave output one-click emergency system and method
CN102833469B (en) * 2012-09-10 2014-03-12 中央电视台 Method for dynamically distributing broadcast shared resources
CN203338755U (en) * 2013-07-02 2013-12-11 上海北丞电子发展有限公司 High-definition blue-ray recording and playing system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7889964B1 (en) * 1998-07-30 2011-02-15 Tivo Inc. Closed caption tagging system
CN101188696A (en) * 2007-11-19 2008-05-28 新奥特(北京)视频技术有限公司 A system for separation, preparation and playing of TV station caption and video
CN102256162A (en) * 2011-07-22 2011-11-23 网宿科技股份有限公司 Method and system for optimizing media-on-demand based on real-time file format conversion
CN102780836A (en) * 2012-04-24 2012-11-14 苏州市广播电视总台 High-standard definition compatibility and high-safety news non-linear editing network system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
全分布式存储非编网络的设计与实现;王俊鹏等;《电视技术》;20070817;第31卷(第8期);第82-83,90页 *
追求"安全、质量、效率"——江苏广电总台综合制作网创新调优经验谈;马晨阳;《现代电视技术》;20111015;第78-82页 *

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