CN101656839A - Unattended operation method for producing and broadcasting automatic caption list - Google Patents
Unattended operation method for producing and broadcasting automatic caption list Download PDFInfo
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Abstract
The invention relates to a television program producing and broadcasting technique in the field of broadcasting and television, in particular to an unattended operation method for producing and broadcasting an automatic caption list. The method comprises the following steps: allocating a device in charge of producing and verifying captions at a channel side, allocating a device in charge of broadcasting the captions at a broadcasting part, and connecting two systems through a network; uniformly storing data information in the caption producing and broadcasting flow in a core database; and automatically transmitting the produced caption broadcasting materials to the broadcasting part by the caption producing device allocated at the channel side through the network, automatically generatingcaption objects by a caption list-editing machine at the broadcasting part according to a caption item generation command, automatically transmitting the latest generated caption objects to a captionbroadcasting machine corresponding to a channel by the caption list-editing machine according to channel identification information, and performing timed broadcasting or emergency inter cut by the caption broadcasting machine according to a caption broadcasting command. The method can reduce the labor intensity of a worker and increase the security and the stability of broadcasting picture-text information.
Description
Technical field
The present invention relates to broadcasting and TV field TV programme record and broadcast technology, be specifically related to a kind of unattended automatic caption list record and broadcast method.
Background technology
TV station's broadcasting line is the final outlet of TV programme.Generally, there are several channels in a TV station, and each channel has independently playing device.The stability of the correctness of content of TV program, accuracy and playing device is that TV station broadcasts the problem that department pays close attention to the most.In case break down, will directly cause the broadcast accident, bring bad social effect.
Present TV station at different levels is all in the transformation of carrying out broadcasting line, to be transformed into the broadcast mode based on hard disk based on the tradition broadcast mode of tape, its reason has three: the first, and technical reason, now under the main trend of digital improvement, become a kind of new technology trend based on the broadcast of hard disk; The second, from the angle of program quality, use hard disk to broadcast and can avoid some mechanical wears to the loss of signal that program brings, improve the quality that final program broadcasts; The 3rd, from point of view of application, along with television station channel is integrated, broadcasting line graph text information content broadcast amount task increases, as the topical news that rolls, accident, tourism information, public service information, weather information, advertisement icon, copy or the like in real time.These graph text informations superpose up by configuration film titler on broadcasting line.
The record and broadcast pattern of film titler has following two kinds on the at present common broadcasting line:
The first, unit record and broadcast pattern.Be film titler of each channel configuration.This film titler is independently finished the layout and the broadcast task of the caption list of this channel.This pattern does not have the record and broadcast flow process of networking, and all volumes are single and broadcast operation, all finish at the film titler of channel.
The second, concentrate single record and broadcast pattern of compiling.Except for broadcast film titler of each channel configuration, also need to dispose one and concentrate the volume unit, be all channel editor captions broadcasting lists by this volume unit, by procotol these broadcasting lists are sent on the broadcast machine of channel then.
In actual use, all there is following problem in above-mentioned two kinds of patterns:
(1) fail safe is low: occur artificial broadcast accident easily;
(2) repetitive operation: the broadcast content of every day is roughly the same;
(3) personnel waste: every day many people, many order of classes or grades at school, multichannel work;
(4) the content change is inconvenient: can only revise in the system that broadcasts, meet the problem that is difficult for modification when broadcasting state;
(5) the unit single channel is used: when film titler was out of order, the promptness of broadcasting fully was poor;
(6) statistics and the safe file problem of broadcast project: can't gather fast with the safety of captions broadcasting list and file, particularly to the broadcast number of times and the broadcast slot of ad content, can't accomplish effective statistics technically, thereby have influence on the economic interests of TV station and manufacturer;
(7) accident responsibility defines difficulty: when the broadcast accident occurring, can't define responsibility clearly from technical standpoint, bring many troubles for the management of TV station.
Summary of the invention
The objective of the invention is defective at caption list record and broadcast pattern on the present TV station broadcasting line, a kind of unattended automatic caption list record and broadcast method is provided, this method can fundamentally solve above-mentioned variety of issue, and can reduce staff's labour intensity, increase fail safe and stability that image-text information broadcasts.
Technical scheme of the present invention is as follows: a kind of unattended automatic caption list record and broadcast method, this method will be responsible for the deployed with devices of captions making and audit in channel side, to be responsible for deployed with devices that captions broadcast in broadcast portion, two systems connect by network; With the data message storage and uniform in the caption producing flow process at core database; The captions making apparatus that is deployed in channel side sends the captions broadcast material that making finishes to broadcast portion automatically by network, the captions of broadcast portion are compiled unit and are generated order generation caption object automatically according to subtitle item, and the captions that the caption object of up-to-date generation is sent to this channel correspondence automatically being broadcasted machine according to channel identication information, captions broadcast machine and broadcast order according to captions and carry out broadcast regularly or promptly intercut.
Further, aforesaid unattended automatic caption list record and broadcast method, wherein, the data message that is stored in the core database comprises that information made in captions, captions broadcast information, caption producing flow process control command.
Further, aforesaid unattended automatic caption list record and broadcast method, wherein, described subtitle item generates order and comprises following information: channel sign, captions type, caption content, template identifier, broadcast type, broadcast time.
Further again, aforesaid unattended automatic caption list record and broadcast method, wherein, it is as follows according to the process that subtitle item generates the automatic generation of order caption object that unit compiled in captions:
(1) after captions volume unit obtains subtitle item generation order, this command analysis is come out, and template is loaded in the internal memory, form the chained list of a template caption object;
(2) according to the captions type, the caption content in the use subtitle item generation order replaces the counterpart in the chained list, produces the caption object that needs broadcast;
(3) " broadcast type " information and " broadcast time " information that subtitle item is generated in the order is composed to caption object;
(4) caption object is inserted in the current subtitle list.
Further, aforesaid unattended automatic caption list record and broadcast method, wherein, channel square cards for learning characters screen making equipment is sent to application server by network with the relevant information of plant seeds by airplane captions and footmark, and the captions that application server finishes making broadcast material and send automatically that unit compiled in corresponding captions and captions broadcast machine to.
Further again, aforesaid unattended automatic caption list record and broadcast method, wherein, core database writes down the plant seeds by airplane content, and manages broadcasting material, and expired footmark is deleted automatically.
Further, aforesaid unattended automatic caption list record and broadcast method, wherein, the captions broadcast machine of each channel is provided with discharge time for this channel, and captions broadcast machine and carry out the unloading and the loading of unattended caption list automatically.
Further again, aforesaid unattended automatic caption list record and broadcast method, wherein, the step that unloads automatically and load is as follows:
(1) after captions broadcast machine examination measures discharge time, automatically current program subtitle list is uninstalled, then from the new one day programme of trend database service application;
(2) database service from database, extracts all the captions tasks that need broadcast on the same day according to channel identication information, forms a tabulation;
(3) database service is compiled unit with the captions that subtitle list is pushed to broadcast portion automatically;
(4) captions are compiled unit according to the captions task, after mating with template, generate various types of caption object automatically, are pushed to captions and broadcast machine.
Beneficial effect of the present invention is as follows: the present invention is according to the application demand of broadcasting line film titler, adopt the broadcasting line caption producing flow process of distributed network automatically, broadcast the making and the audit of captions in channel side, and driving core volume unit generates caption broadcasting list automatically, then submit to automatically to be sent to and broadcast on the film titler, carry out the automatic broadcast of captions.By these technological means, can realize the unattended automatically working pattern of broadcast portion, reach responsibility boundary, save manpower, reduce labour intensity, greatly avoid purposes such as artificial origin's mistake and accident generation, ensured fail safe, high efficiency and the stability of captions broadcast systems.
Description of drawings
Fig. 1 is the system construction drawing of the distributed network sharing application pattern of the method for the invention.
Fig. 2 disposes schematic diagram based on distributed making apparatus and playing device.
Fig. 3 is the image-text information caption information way to manage schematic diagram that separates based on record and broadcast.
Fig. 4 is the generation of unattended automatic caption list, transmission and playing flow path schematic diagram.
Fig. 5 is the automatic unloading and the load mode schematic diagram of unattended caption list.
Embodiment
Below in conjunction with drawings and Examples the present invention is described in detail.
Unattended automatic caption list record and broadcast method be will be responsible for that captions are made and the deployed with devices of audit in channel side, will be responsible for deployed with devices that captions broadcast in broadcast portion, two systems connect by network; With the data message storage and uniform in the caption producing flow process at core database; The captions making apparatus that is deployed in channel side sends the captions broadcast material that making finishes to broadcast portion automatically by network, the captions of broadcast portion are compiled unit and are generated order generation caption object automatically according to subtitle item, and the captions that the caption object of up-to-date generation is sent to this channel correspondence automatically being broadcasted machine according to channel identication information, captions broadcast machine and broadcast order according to captions and carry out broadcast regularly or promptly intercut.
Fig. 1 according to TV station's business characteristic, respectively is deployed in channel side and broadcast portion with record and broadcast equipment for using the distributed network sharing application modular system that the method for the invention makes up.Wherein, the making apparatus that is deployed in channel side is connected with the channel office network respectively, and each maker 1 is responsible for the captions of a channel and is made and audit; Broadcast portion concentrates and to dispose captions and broadcast machine 2, captions automatically and compile unit 5, core database server 3 automatically, and playing device is connected with broadcasting line captions network respectively.Interconnect by switch between net between channel office network and the broadcasting line captions network, carry out the mutual of data flow by gateway.Also be provided with the application server 4 that is connected with broadcasting line captions network in broadcast portion, channel side's maker 1 is sent to application server 4 by network with the relevant information of plant seeds by airplane captions and footmark, and the captions that application server 4 finishes making broadcast material and send automatically that unit 5 compiled in corresponding captions and captions broadcast machine 2 to.
By said method, the equipment of channel side only is responsible for the making and the audit of captions, and the equipment of broadcast portion is responsible for the final broadcast of captions.All data (caption list, control command, statistical information) in this system flow all are stored in the core database server.The correctness of caption content is ensured that by channel side the stability that captions broadcast is ensured by broadcast portion.In case the broadcast accident that caption content, equipment fault cause occurs, can inquire about by the Operation Log in the database very efficiently.This deployment scenario based on distributed making apparatus and playing device as shown in Figure 2.
As shown in Figure 3, in the workflow that record and broadcast separates, all information is taked centralized stores, decentralized technology.Traffic flow information comprises following type:
1. information made in captions, comprises text message (comprising various types of topical newss, accident, tourism information, public service, real-time weather information, spectators' note), animation file (comprising various types of advertisement footmarks, TV play title footmark), image file (comprising various types of advertisement footmarks, TV play title footmark).These information are compiled the unit generation by the terminal system of channel side and the captions of broadcast portion, are mainly managed by channel side, comprise establishment, audit, modification, renewal, storage, maintenance strategy etc.
2. captions broadcast information, comprise the various caption object that finally present in the TV subtitling mode, as drawing roll screen, TV play dynamically and static name, TV station's station symbol, dynamically and static advertising at the bottom of the text.These information are produced by the captions broadcast machine of broadcast portion, are mainly managed by broadcast portion.
3. caption producing flow process control command comprises that subtitle item drives to generate order, captions and broadcast order, promptly intercut order, the automatic load command of caption list, caption list and unload order automatically.Caption producing flow process control command is compiled unit, the generation of captions broadcast machine by the terminal system of channel side, the captions of broadcast portion.All these orders are all stored in the core database, read and do further processing by corresponding recipient, receive after " obtaining whole single command " that broadcast portion captions volume unit sends as channel side's maker, just from core database, read the programme on the same day and send " sending whole single command ", after the captions volume unit of broadcast portion obtains this control command, programme is parsed, generate subtitle list.These control informations are finished automatically by the works engine, need not manual intervention.
As shown in Figure 4, the present invention has realized the generation of unattended automatic caption list, transmission and playing flow path.Channel side's terminal connects application server by network, by the application server access database, realizes functions such as login, clauses and subclauses typing, audit, retrieval, file loading.
The groundwork flow process of channel side's terminal (maker) is:
The single service of row is responsible for generating programme automatically according to the instruction of application server.
In this flow process, channel side's terminal is born the information typing work of each channel plant seeds by airplane captions, footmark, can define the relevant information of plant seeds by airplane captions and footmark in client, is sent to application server; Application server is undertaken the attribute definition and the making work of all subtitle files, the captions broadcast material that making is finished sends corresponding captions volume unit and captions broadcast machine automatically to, what the film titler of each channel mainly moved is that captions broadcast program, accept broadcast task and stable broadcast that application server sends in real time, personnel do not carry out any operation to it generally speaking; The subtitle item that channel side's terminal is submitted to stores in the core database earlier, then the local material that uses in this subtitle item (footmark image file and animation file), send corresponding captions at synchronization and broadcast machine and captions volume unit, if current this subtitle item belongs to the captions task on the same day, then channel side's terminal system also will be by sending one " flow process control command ", unit compiled in the notice captions, then captions are compiled unit and are taken out this subtitle item from database, generate a caption object, on the volume unit, show.
Database server is responsible for writing down all captions attribute informations and broadcast task and daily record, information such as record plant seeds by airplane content, and the broadcast material of footmark etc. managed, expired footmark is deleted automatically, automatically obtain the function of online programme and born by application server, main task is to obtain programme, mate the back and generate concrete captions and broadcast task and distribution.
If online programme is modified, to the captions broadcast system, system newly mates each scene according to up-to-date online substance and broadcasts attribute, upgrades the subtitle editing and playing list, does not need to carry out manual operation again with the online list after transmission is upgraded automatically.
The relevant device of disposing in broadcast portion (compiling unit, broadcast machine) is to be in unattended automatically working pattern.The generation of caption list is initiated by channel side, the volume unit that drives broadcast portion by subtitle item generation order generates caption object automatically, compile unit and can be sent to the broadcast machine of this channel correspondence to the caption object of up-to-date generation automatically according to channel identication information, the broadcast machine broadcasts order according to captions to carry out the broadcast of timing or promptly intercuts.
In network control order " subtitle item generation ", include following information:
(a) channel indicates--by unified management, can be unique identifier of each channel allocation to all channels.
(b) captions type--types such as " literal footmark ", " picture footmark ", " animation footmark ", " rolling plant seeds by airplane " can be arranged.
(c) caption content--corresponding " literal footmark " type, content is some text-strings; Corresponding " picture footmark " type, content is an image file; Corresponding " animation footmark " type, caption content is an animation file; Corresponding " rolling plant seeds by airplane " type, content is a text-string.
(d) masterplate identifier--by unified management, can distribute a unique identifier to all templates of each channel to template.Masterplate identifier between different channel can be identical, but the ID of all masterplates in a channel must be unique.
(e) broadcast type--stipulated the broadcast type of captions: be to broadcast according to number of times, still resident circulation is broadcasted.
(f) zero-time and concluding time that broadcast time--caption object is broadcasted, if there is not broadcast time, then these clauses and subclauses are promptly to intercut clauses and subclauses.
Captions are compiled after unit " subtitle item generation " control command on obtain, and this command analysis is come out, and mate automatically according to information of listing above and template, generate caption object, are inserted in the current caption broadcasting list.
Said process is described in detail as follows:
(1) after captions volume unit obtains " subtitle item generation " order, this command analysis is come out, and template is loaded in the internal memory, form the chained list L of a template caption object;
(2) if " text footmark " or " rolling plant seeds by airplane " type, search among the chained list L caption object B that name is called " replace ", " content of text " in the utility command replaces the Word message of B, and the caption object after the generation is exactly the caption object D that needs broadcast;
(3) if " picture footmark " or " animation footmark " type, search among the chained list L caption object B that name is called " replace ", " image file " in the utility command or the complete trails information of " animation file " replace the file path of B, and the caption object after the generation is exactly the caption object D that needs broadcast;
(4), compose and give caption object D with " broadcast type " information and " broadcast time " information of " subtitle item generation " control command;
(5) caption object D is inserted in the current subtitle list;
(6) captions volume unit sends this caption object D on the captions broadcast machine of corresponding channel according to channel identication information;
(7) captions broadcast machine parses caption object D, is " promptly intercutting clauses and subclauses " if determine, and then starts to broadcast engine broadcast caption object D at once; Otherwise these clauses and subclauses are inserted in the subtitle list according to time sequencing, broadcast by the time.
Described template is exactly that some are stored in application server, the subtitle file on unit and the captions broadcast machine compiled in captions.Template is compiled the unit creation by captions, and the fixed format that corresponding captions broadcast comprises parameters such as color, font, font size, position, trick mode.Usually each channel has own different subtitle template.After the template creation produces, these templates are sent to application server and captions broadcast machine by " flow through a network control command ".
Just because the channel of most TV station all is to finish the broadcast of program in morning, in order to reduce operator on duty's working strength, system of the present invention provides a kind of unattended caption list unloading and loading technique automatically.The core of this technology is for each channel a discharge time to be set, after having arrived this time, system uninstalls current program subtitle list automatically, then from the new one day programme of trend database service application, the database service meeting is according to channel identication information, from database, extract all the captions tasks that need broadcast on the same day, form a tabulation, automatically be pushed to the single film titler of automatic volume of broadcast portion, compile single film titler automatically according to the captions task, after mating with template, automatically generate various types of caption object, be pushed to the broadcast film titler.All said process need not manual intervention.
The automatic unloading of unattended caption list and load mode as shown in Figure 5, the idiographic flow that is indicated among the figure is as follows:
Step is 1.: captions broadcast after machine examination measures discharge time, automatically current program subtitle list are uninstalled, then from the new one day programme of trend database service application;
Step is 2.: the database service meeting from database, extracts all the captions tasks that need broadcast on the same day according to channel identication information, forms a tabulation;
Step is 3.: database service is compiled unit with the captions that subtitle list is pushed to broadcast portion automatically;
Step is 4.: captions are compiled unit according to the captions task, after mating with template, generate various types of caption object automatically, are pushed to captions and broadcast machine.
The present invention is mainly used in the caption producing flow process of broadcasting and TV field TV programme record and broadcast mechanism, related to deployment based on distributed making apparatus and playing device, manage based on the broadcasting line image-text information caption information that record and broadcast separates, unattended automatic caption list generates, transmit and playing flow path, and technology contents such as the automatic unloading of unattended caption list and loading, by these technological means, reach responsibility boundary, save manpower, reduce labour intensity, greatly avoid purposes such as artificial origin's mistake and accident generation, ensure the fail safe of captions broadcast system, high efficiency and stability.
Method of the present invention is not limited to the embodiment described in the embodiment, and those skilled in the art's technical scheme according to the present invention draws other execution mode, belongs to technological innovation scope of the present invention equally.
Claims (8)
1. unattended automatic caption list record and broadcast method is characterized in that: this method will be responsible for that captions are made and the deployed with devices of audit in channel side, will be responsible for deployed with devices that captions broadcast in broadcast portion, two systems connect by network; With the data message storage and uniform in the caption producing flow process at core database; The captions making apparatus that is deployed in channel side sends the captions broadcast material that making finishes to broadcast portion automatically by network, the captions of broadcast portion are compiled unit and are generated order generation caption object automatically according to subtitle item, and the captions that the caption object of up-to-date generation is sent to this channel correspondence automatically being broadcasted machine according to channel identication information, captions broadcast machine and broadcast order according to captions and carry out broadcast regularly or promptly intercut.
2. unattended automatic caption list record and broadcast method as claimed in claim 1 is characterized in that: the data message that is stored in the core database comprises that information made in captions, captions broadcast information, caption producing flow process control command.
3. unattended automatic caption list record and broadcast method as claimed in claim 1 or 2 is characterized in that: described subtitle item generates order and comprises following information: channel sign, captions type, caption content, template identifier, broadcast type, broadcast time.
4. unattended automatic caption list record and broadcast method as claimed in claim 3 is characterized in that: it is as follows according to the process that subtitle item generates the automatic generation of order caption object that unit compiled in captions:
(1) after captions volume unit obtains subtitle item generation order, this command analysis is come out, and template is loaded in the internal memory, form the chained list of a template caption object;
(2) according to the captions type, the caption content in the use subtitle item generation order replaces the counterpart in the chained list, produces the caption object that needs broadcast;
(3) " broadcast type " information and " broadcast time " information that subtitle item is generated in the order is composed to caption object;
(4) caption object is inserted in the current subtitle list.
5. unattended automatic caption list record and broadcast method as claimed in claim 1 or 2, it is characterized in that: channel square cards for learning characters screen making equipment is sent to application server by network with the relevant information of plant seeds by airplane captions and footmark, and the captions that application server finishes making broadcast material and send automatically that unit compiled in corresponding captions and captions broadcast machine to.
6. unattended automatic caption list record and broadcast method as claimed in claim 5 is characterized in that: core database writes down the plant seeds by airplane content, and manages broadcasting material, and expired footmark is deleted automatically.
7. unattended automatic caption list record and broadcast method as claimed in claim 1 or 2, it is characterized in that: the captions broadcast machine of each channel is provided with discharge time for this channel, and captions broadcast machine and carry out the unloading and the loading of unattended caption list automatically.
8. unattended automatic caption list record and broadcast method as claimed in claim 7, it is characterized in that: the step that unloads automatically and load is as follows:
(1) after captions broadcast machine examination measures discharge time, automatically current program subtitle list is uninstalled, then from the new one day programme of trend database service application;
(2) database service from database, extracts all the captions tasks that need broadcast on the same day according to channel identication information, forms a tabulation;
(3) database service is compiled unit with the captions that subtitle list is pushed to broadcast portion automatically;
(4) captions are compiled unit according to the captions task, after mating with template, generate various types of caption object automatically, are pushed to captions and broadcast machine.
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| CN 200810117979 CN101656839B (en) | 2008-08-19 | 2008-08-19 | Unattended operation method for producing and broadcasting automatic caption list |
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| CN 200810117979 CN101656839B (en) | 2008-08-19 | 2008-08-19 | Unattended operation method for producing and broadcasting automatic caption list |
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| CN102724409A (en) * | 2011-03-30 | 2012-10-10 | 新奥特（北京）视频技术有限公司 | A method and a system for remote centralized control |
| CN102724439A (en) * | 2011-05-10 | 2012-10-10 | 新奥特（北京）视频技术有限公司 | Method and system for realizing caption broadcasting service |
| CN102724425A (en) * | 2011-11-29 | 2012-10-10 | 新奥特（北京）视频技术有限公司 | Television image and text template broadcasting method |
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| CN103067649A (en) * | 2012-12-28 | 2013-04-24 | 中央电视台 | High precision synchronous broadcast control achieving method of channel broadcast system and channel packaging system |
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| CN108833991A (en) * | 2018-06-29 | 2018-11-16 | 北京优酷科技有限公司 | Video caption display methods and device |
| CN108924598A (en) * | 2018-06-29 | 2018-11-30 | 北京优酷科技有限公司 | Video caption display methods and device |
| CN115834971A (en) * | 2022-11-02 | 2023-03-21 | 中央广播电视总台 | Subtitle generating method, device and storage medium |
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| US7050109B2 (en) * | 2001-03-02 | 2006-05-23 | General Instrument Corporation | Methods and apparatus for the provision of user selected advanced close captions |
| CN100364322C (en) * | 2005-11-21 | 2008-01-23 | 创维数字技术（深圳）有限公司 | Method for dynamically forming caption image data and caption data flow |
| CN100515049C (en) * | 2007-11-19 | 2009-07-15 | 新奥特（北京）视频技术有限公司 | A method for separation, preparation and playing of TV station caption and video |
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- 2008-08-19 CN CN 200810117979 patent/CN101656839B/en not_active Expired - Fee Related
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| CN102724409A (en) * | 2011-03-30 | 2012-10-10 | 新奥特（北京）视频技术有限公司 | A method and a system for remote centralized control |
| CN102724409B (en) * | 2011-03-30 | 2016-12-14 | 新奥特（北京）视频技术有限公司 | A kind of method and system of remote control |
| CN102740166B (en) * | 2011-03-31 | 2016-08-17 | 新奥特（北京）视频技术有限公司 | A kind of system and method for remote video insertion |
| CN102740166A (en) * | 2011-03-31 | 2012-10-17 | 新奥特（北京）视频技术有限公司 | System and method for remote video insertion |
| CN102724439A (en) * | 2011-05-10 | 2012-10-10 | 新奥特（北京）视频技术有限公司 | Method and system for realizing caption broadcasting service |
| CN102724425A (en) * | 2011-11-29 | 2012-10-10 | 新奥特（北京）视频技术有限公司 | Television image and text template broadcasting method |
| CN102724425B (en) * | 2011-11-29 | 2017-08-04 | 新奥特（北京）视频技术有限公司 | A kind of method that teletext template is broadcasted |
| CN103067649A (en) * | 2012-12-28 | 2013-04-24 | 中央电视台 | High precision synchronous broadcast control achieving method of channel broadcast system and channel packaging system |
| CN104427257A (en) * | 2013-08-23 | 2015-03-18 | 北大方正集团有限公司 | Broadcasting method and broadcasting device for outdoor large screen |
| CN104427257B (en) * | 2013-08-23 | 2018-12-11 | 北大方正集团有限公司 | Playing method and device for outdoor large screen |
| CN108833991A (en) * | 2018-06-29 | 2018-11-16 | 北京优酷科技有限公司 | Video caption display methods and device |
| CN108924598A (en) * | 2018-06-29 | 2018-11-30 | 北京优酷科技有限公司 | Video caption display methods and device |
| CN115834971A (en) * | 2022-11-02 | 2023-03-21 | 中央广播电视总台 | Subtitle generating method, device and storage medium |
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