CN105187852A - Emergency broadcast caption transmitting and receiving methods and system for subway operation - Google Patents
Emergency broadcast caption transmitting and receiving methods and system for subway operation Download PDFInfo
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- CN105187852A CN105187852A CN201410265024.XA CN201410265024A CN105187852A CN 105187852 A CN105187852 A CN 105187852A CN 201410265024 A CN201410265024 A CN 201410265024A CN 105187852 A CN105187852 A CN 105187852A
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Abstract
The invention provides emergency broadcast caption transmitting and receiving methods and system for subway operation, and the transmitting method comprises the steps: manufacturing an emergency broadcast caption into a private TS stream; and transmitting the private TS stream broadcast to a subway television receiving terminal through broadcasting and TV bands. The receiving method comprises the steps that a subway television receiving terminal builds a private PID channel for the private TS stream made by the emergency broadcast caption; the subway television receiving terminal enables the private TS stream and a real-time subway television program to be reused, and enables the emergency broadcast caption to be projected to a subway display screen. The emergency broadcast caption is added independently, is completely uncorrelated with a program manufacturing process, and just needs to be reused with the program for broadcasting, and meets the emergency demands. The private TS stream is broadcasted through the broadcasting and TV bands, thereby guaranteeing the successful transmission of an emergency caption signal. Compared with the cost of a conventional caption, the cost is saved. The emergency caption can be displayed in any mode, and the integrity of a program image cannot be damaged.
Description
Technical field
The invention belongs to communication technical field, relate to a kind of emergent broadcast captions broadcast control method, particularly relate to a kind of emergent broadcast captions sending, receiving method for metro operation and system.
Background technology
At program laminated thereto word and the pictorial information of radio and television, this is applied in radio, TV and film industries ripe already, traditional sense is called as the interpolation of " captions ".But consider traditional captions addition manner, be complete interpolation program making while, do not meet the application scenarios of emergent broadcast.Traditional television subtitling system is added on program source signal by film titler by caption content, benefit is to user terminal no requirement (NR), see that image just necessarily sees captions, but it is revised program video material, alternatively that beyond retrieve destruction is caused to original image, captions cannot blanking, is called as opening captions (OpenCaptions), there is following defect:
1) the professional film titler price of broadcast television industry use is relatively costly, and operate more complicated, manufacture difficulty is higher, and a lot of micro television station or Television show producers are difficult to popularize, and is difficult to directly provide captions service.Different radio and television departments may adopt film titler and the caption editing system of different supplier, are not easy to unified management and resource-sharing.
2) traditional caption is embedded in image the part becoming image, the definition of captions can be subject to the impact of code efficiency and coded format, in the image that low bit-rate or high speed flash (as camera lens lateral shake or the picture occurring photoflash lamp), the definition of captions is easily had a strong impact on.
3) application state of traditional caption broadcasting system, it is the synthesis completing captions and image at making link, image and captions are an entirety, be commonly called as hard captions, cannot mask, more cannot select multi-language captions voluntarily, this is concerning needing to be that unwelcome (as the foreigner failing to see Chinese character sees that Chinese subtitle can feel very tired the spectators of multilingual service, this concerning skimble-skamble captions them, only can destroy the complete of image), lack the support to multi-language captions selection function.
4) text subtitle such as computer, multimedia player, Srt, Ass that network is conventional, volume is minimum, special effective function is powerful, tape market and network are used in a large number, but the TS streaming media playing form of DVB digital television broadcasting can not be supported, directly cannot apply to digital television broadcasting.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of emergent broadcast captions sending, receiving method for metro operation and system, being to complete the program making while for solving that captions in existing metro operation add, the problem of emergent demand cannot be met.
For achieving the above object and other relevant objects, the invention provides a kind of emergent broadcast captions sending method for metro operation, the described emergent broadcast captions sending method for metro operation comprises: emergent broadcast captions are made into privately owned TS and flow; Utilize broadcasting and TV frequency range that described privately owned TS streaming is sent to subway television receive terminal.
Preferably, described privately owned TS stream makes according to DVB subtitling standard.
Preferably, the described emergent broadcast captions sending method for metro operation also comprises: in the Extended Protocol of described DVB subtitling standard, arrange increase by one first subtitle segment realize the horizontal broadcasting of rolling of captions; Second subtitle segment of increase by order to the grouping of specifying captions to use is set in the Extended Protocol of described DVB subtitling standard, increase by one is set in the Extended Protocol of described DVB subtitling standard in order to set the 3rd subtitle segment of the grouping of single or multiple Set Top Box, realizes captions grouping and play; Described second subtitle segment and described privately owned TS flow together to pack and send; Described 3rd subtitle segment sends separately; Preset in described privately owned TS stream and edit full frame picture number and realize the full frame played in full screen of captions.
The present invention also provides a kind of emergent broadcast captions method of reseptance for metro operation, and the described emergent broadcast captions method of reseptance for metro operation comprises: subway television receive terminal is that the privately owned TS stream be made up of emergent broadcast captions received sets up privately owned PID passage; Described privately owned TS stream carries out multiplexing with real-time subway TV programme by subway television receive terminal, is rendered on subway display screen by described emergent broadcast captions.
Preferably, described subway television receive terminal utilizes DVB standard the emergent broadcast caption content of described privately owned TS stream to be presented on described subway display screen.
Preferably, the described emergent broadcast captions method of reseptance for metro operation also comprises: background is first plotted in the from left to right region that described subway display screen is specified by described subway television receive terminal, then described emergent broadcast caption content rolled in background, the transverse direction rolling realizing emergent broadcast captions is play; Oneself is set to the grouping of specifying by described subway television receive terminal according to self numbering, when receiving described privately owned TS stream, judge whether described privately owned TS stream is grouping captions, if the subtitle segment numbering increased in the Extended Protocol then by DVB subtitling standard searches the numbering of the emergent broadcast captions received, if the numbering of described emergent broadcast captions is mated with the numbering of described subway television receive terminal, then show described emergent broadcast captions; If described emergent broadcast captions be numbered 0, then all subway television receive terminals all show; Described subway television receive terminal judges whether described privately owned TS stream is full frame captions, if then read full frame picture number, so that the full frame picture choosing reference numeral from a ROM carries out follow-up display.
The present invention also provides a kind of emergent broadcast captions transmitting system for metro operation, and the described emergent broadcast captions transmitting system for metro operation comprises: TS flows generation module, according to DVB subtitling standard, emergent broadcast captions is made into privately owned TS and flows; TS flows sending module, flows generation module be connected with described TS, utilizes broadcasting and TV frequency range that described privately owned TS streaming is sent to subway television receive terminal.
Preferably, the emergent broadcast captions transmitting system for metro operation also comprises: the horizontal module of rolling of captions, flows generation module be connected with described TS, arranges increase by one first subtitle segment and realize captions laterally rolling in the Extended Protocol of described DVB subtitling standard; Captions grouping playing module, flow generation module with described TS to be connected, second subtitle segment of increase by order to the grouping of specifying captions to use is set in the Extended Protocol of described DVB subtitling standard, increase by is set in the Extended Protocol of described DVB subtitling standard in order to set the 3rd subtitle segment of the grouping of single or multiple Set Top Box; Described second subtitle segment and described privately owned TS flow together to pack and send; Described 3rd subtitle segment sends separately; Captions played in full screen module, flows generation module with described TS and is connected, in described privately owned TS stream, preset full frame picture number.
The present invention also provides a kind of emergent broadcast captions receiving system for metro operation, and the described emergent broadcast captions receiving system for metro operation comprises connected subway television receive terminal and subway display screen; Described subway television receive terminal comprises: captions receiver module, receives the privately owned TS stream of broadcasting and TV multi-band broadcast; Multiplexing module, is connected with described captions receiver module, for described privately owned TS stream sets up privately owned PID passage, carries out multiplexing by described privately owned TS stream with real-time subway TV programme; Described subway display screen is connected with described Multiplexing module, shows described emergent broadcast captions and real-time subway TV programme.
Preferably, the described emergent broadcast captions receiving system for metro operation also comprises the captions be connected respectively with described Multiplexing module and subway display screen and resolves playing module, described captions are resolved playing module and are comprised: the horizontal resolution unit of rolling of captions, be connected respectively with subway display screen with described Multiplexing module, judge whether described privately owned TS stream is roll titles, if then first background is plotted on from left to right region that described subway display screen specifies, then described emergent broadcast caption content is rolled in background, the transverse direction rolling realizing emergent broadcast captions is play, captions packet parsing unit, be connected respectively with subway display screen with described Multiplexing module, judge whether described privately owned TS stream is grouping captions, if then when receiving described privately owned TS stream, the subtitle segment numbering increased in Extended Protocol by DVB subtitling standard searches the numbering of the emergent broadcast captions received, if the numbering of described emergent broadcast captions is mated with the numbering of described subway television receive terminal, then show described emergent broadcast captions, if described emergent broadcast captions be numbered 0, then all subway television receive terminals all show, the full frame resolution unit of captions, is connected with subway display screen respectively with described Multiplexing module, judges whether described privately owned TS stream is full frame captions, if then read full frame picture number, so that the full frame picture choosing reference numeral from a ROM carries out follow-up display.
As mentioned above, the emergent broadcast captions broadcast control system for metro operation of the present invention and method, have following beneficial effect:
In the present invention, the interpolation of emergent captions is unaided, completely uncorrelated with program making process, and emergent captions only just carry out multiplexing broadcast with program when needs are play, and meet emergent demand; The present invention utilizes broadcasting and TV multi-band broadcast TS to flow, and there is not any interference problem, ensure that the smooth transmission of emergent caption signal; The present invention only needs software just can realize, and saves cost relative to traditional film titler; The addition manner of emergent captions of the present invention can not affect the broadcast effect of program, and emergent captions can show with the form of any needs, can not destroy the integrality of program video.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the emergent broadcast captions sending method for metro operation of the present invention.
Fig. 2 is the schematic flow sheet of the emergent broadcast captions method of reseptance for metro operation of the present invention.
Fig. 3 is the structural representation of the emergent broadcast captions transmitting system for metro operation of the present invention.
Fig. 4 is the structural representation of the emergent broadcast captions receiving system for metro operation of the present invention.
Element numbers explanation
300 emergent broadcast captions transmitting systems
The horizontal module of rolling of 310 captions
320 captions grouping playing modules
330 captions played in full screen modules
340TS flows generation module
350TS flows sending module
400 emergent broadcast captions receiving systems
410 subway television receive terminals
411 captions receiver modules
412 Multiplexing modules
420 subway display screens
Playing module resolved in 430 captions
The horizontal resolution unit of rolling of 431 captions
432 captions packet parsing unit
The full frame resolution unit of 433 captions
S11 ~ S12, S21 ~ S22 step
Embodiment
Below by way of specific instantiation, embodiments of the present invention are described, those skilled in the art the content disclosed by this specification can understand other advantages of the present invention and effect easily.The present invention can also be implemented or be applied by embodiments different in addition, and the every details in this specification also can based on different viewpoints and application, carries out various modification or change not deviating under spirit of the present invention.
Refer to accompanying drawing.It should be noted that, the diagram provided in the present embodiment only illustrates basic conception of the present invention in a schematic way, then only the assembly relevant with the present invention is shown in graphic but not component count, shape and size when implementing according to reality is drawn, it is actual when implementing, and the kenel of each assembly, quantity and ratio can be a kind of change arbitrarily, and its assembly layout kenel also may be more complicated.
Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail.
Embodiment
The invention provides a kind of emergent broadcast captions sending method for metro operation, as shown in Figure 1, the described emergent broadcast captions sending method for metro operation comprises:
Emergent broadcast captions are made into privately owned TS and flow by S11.
Further, described privately owned TS stream makes according to DVB subtitling standard.The present invention adopts DVB caption technology to insert captions in subway TV programme, emergency or grave news is broadcasted to the public, from film titler, subtitle superposition is different to the program pictures in video flowing, captions are inserted program as a privately owned TS stream separately by the present invention, utilize DVB standard to show in television image.
Further, the privately owned TS stream of various broadcasting form can be compiled in emergent broadcast captions, and described various broadcasting form comprises captions laterally rolling, captions grouping broadcasting, captions played in full screen etc.
The edit mode that captions laterally roll is: in the Extended Protocol of described DVB subtitling standard, arrange increase by one first subtitle segment realize captions laterally rolling.
The edit mode that captions grouping is play is: in the Extended Protocol of described DVB subtitling standard, arrange second subtitle segment of increase by order to the grouping of specifying captions to use; Described second subtitle segment and described privately owned TS flow together to pack and send; Increase by one is set in the Extended Protocol of described DVB subtitling standard in order to set the 3rd subtitle segment of the grouping of single or multiple Set Top Box; Described 3rd subtitle segment sends separately.For broadcast, all Set Top Box all can receive identical caption stream.Set Top Box to specify shows the content of specifying, and one is the grouping needing to allow Set Top Box remember oneself, and two is the information that will comprise grouping in caption stream.In the Extended Protocol of DVB subtitling standard, have the grouping that two relevant with grouping Subtitling_Segment (subtitle segment): groupspecificationsegment are used to specify captions and use, and caption stream is together packed and is issued; Groupmanagementsegment is used for setting the grouping of single or multiple Set Top Box, can issue separately.Oneself is set to the grouping of specifying by Set Top Box according to the Set Top Box numbering of inside, the grouping arranged can not be lost because of Set Top Box shutdown.Set Top Box, when receiving caption stream, is searched the numbering of captions, is mated, then show this captions if numbering is numbered with Set Top Box by segment numbering.If packet numbering is 0, then all groupings all show these captions.
The edit mode of captions played in full screen is: in described privately owned TS stream, presetting editting full frame picture number, calling corresponding played in full screen picture can search according to described full frame picture number when playing.The full frame picture of 704 × 576 for Set Top Box internal memory bigger than normal, cannot launch completely in internal memory.Address this problem, picture is pre-stored in firmware (i.e. ROM) by the present invention.Front end only need issue the numbering of full frame picture, and Set Top Box, according to first judging whether full frame captions, then reads full frame picture number, chooses picture and show from ROM.It is full frame that the present invention had both achieved full group, also achieves grouping full frame.
S12, utilizes broadcasting and TV frequency range that described privately owned TS streaming is sent to subway television receive terminal.
Subway routine is all the technology using CBTC (Communication-basedTrainControl), and National urban subway all uses 2.4GHz frequency range, and Wi-Fi also uses same frequency range.In 2.4GHz open frequency range, have 14 frequencies, wherein only have three frequencies to be non-interfering, be i.e. 1 frequency, 6 frequencies, 11 frequency, three frequencies.Shenzhen Metro just employs this three non-interfering frequencies, and wherein the first two frequency is that signal system is used, take into account the situation on active and standby road, and the 3rd frequency is that in-car TV is used.14 frequencies all open for free, and Wi-Fi is all standing, and in other words, Wi-Fi uses any one in 1 frequency-6 frequency, all can cause interference to subway 1 frequency and 6 frequencies; Wi-Fi uses any one frequency in 6 frequency-11 frequencies, can cause interference to 6 frequencies and 11 frequencies.The present invention this time uses broadcasting and TV frequency range to realize the issue of emergent broadcast breakthroughly, and the 700M frequency range that broadcasting and TV are own and other communication frequency band do not exist any interference problem, for emergent caption signal transmission provides good passage.
The present invention will meet an urgent need captions transcoding generate TS stream, do not need add hardware device.After to caption content editor, examination & verification, can directly use the simplest Srt form in the world to make text subtitle file, the complexity of its caption making process is far below traditional caption machine scheme.Then pack to subtitle file, Srt text subtitle file is imported canned software and be encapsulated as TS stream, packing needs the DVB captions Extended Protocol deferring to autonomous revision.Finally by broadcasting and TV frequency range, the TS streaming after packing is sent.Protection scope of the present invention is not limited to the step execution sequence of the present embodiment, and the captions that every principle according to the present invention realizes add scheme and are all included in protection scope of the present invention.
The present invention also provides a kind of emergent broadcast captions method of reseptance for metro operation, and as shown in Figure 2, the described emergent broadcast captions method of reseptance for metro operation comprises:
S21, subway television receive terminal is that the privately owned TS stream be made up of emergent broadcast captions received sets up privately owned PID passage;
S22, described privately owned TS stream carries out multiplexing with real-time subway TV programme by subway television receive terminal, is rendered on subway display screen by described emergent broadcast captions.
Further, described subway television receive terminal utilizes DVB standard the emergent broadcast caption content of described privately owned TS stream to be presented on described subway display screen.
Further, the privately owned TS stream of various broadcasting form can be compiled in emergent broadcast captions, corresponding, the broadcasting form of emergent broadcast captions just can parse, and then plays back at subway television receive terminal with the form editted.Described various broadcasting form comprises captions laterally rolling, captions grouping broadcasting, captions played in full screen etc.
The analysis mode that captions laterally roll is: described subway television receive terminal judges whether described privately owned TS stream is roll titles, if then first background is plotted on from left to right region that described subway display screen specifies, then described emergent broadcast caption content rolled in background, the transverse direction rolling realizing emergent broadcast captions is play;
The analysis mode that captions grouping is play is: oneself is set to the grouping of specifying by described subway television receive terminal according to self numbering, when receiving described privately owned TS stream, judge whether described privately owned TS stream is grouping captions, if the subtitle segment numbering increased in the Extended Protocol then by DVB subtitling standard searches the numbering of the emergent broadcast captions received, if the numbering of described emergent broadcast captions is mated with the numbering of described subway television receive terminal, then show described emergent broadcast captions; If described emergent broadcast captions be numbered 0, then all subway television receive terminals all show.
The analysis mode of captions played in full screen is: described subway television receive terminal judges whether described privately owned TS stream is full frame captions, if then read full frame picture number, so that the full frame picture choosing reference numeral from a ROM carries out follow-up display.
The caption data completing packing is transported to multiplexer by subway television receive terminal of the present invention, multiplexer is utilized to be that it sets up privately owned data PID passage, and carry out multiplexing with the subway TV program stream broadcasted in real time, finally make captions timing, orientation, be clearly presented on subway display screen.In addition, the present invention can also adopt special efficacy caption editing and Presentation Function, makes the display of captions more eye-catching, according to content and the urgency level of different emergency information, can set different display effects, is convenient to passenger and distinguishes.Protection scope of the present invention is not limited to the step execution sequence of the present embodiment, and the captions that every principle according to the present invention realizes add scheme and are all included in protection scope of the present invention.
The present invention also provides a kind of emergent broadcast captions transmitting system for metro operation, the described emergent broadcast captions transmitting system for metro operation can realize the emergent broadcast captions sending method for metro operation of the present invention, but the implement device of the emergent broadcast captions sending method for metro operation of the present invention includes but not limited to the emergent broadcast captions transmitting system for metro operation of the present invention.
As shown in Figure 3, the described emergent broadcast captions transmitting system 300 for metro operation comprises: the horizontal rolling module 310 of captions, captions grouping playing module 320, and captions played in full screen module 330, TS stream generation module 340, TS flows sending module 350.
Emergent broadcast captions are made into privately owned TS according to DVB subtitling standard and flow by described TS stream generation module 340.
Described TS stream sending module 350 flows generation module 340 with described TS and is connected, and utilizes broadcasting and TV frequency range that described privately owned TS streaming is sent to subway television receive terminal.
The horizontal rolling module 310 of described captions flows generation module 340 with described TS and is connected, and arranges increase by one first subtitle segment and realize captions laterally rolling in the Extended Protocol of described DVB subtitling standard.
Described captions grouping playing module 320 flows generation module 340 with described TS and is connected, second subtitle segment of increase by order to the grouping of specifying captions to use is set in the Extended Protocol of described DVB subtitling standard, increase by is set in the Extended Protocol of described DVB subtitling standard in order to set the 3rd subtitle segment of the grouping of single or multiple Set Top Box; Described second subtitle segment and described privately owned TS flow together to pack and send; Described 3rd subtitle segment sends separately.
Described captions played in full screen module 330 flows generation module 340 with described TS and is connected, in described privately owned TS stream, preset full frame picture number.
The present invention also provides a kind of emergent broadcast captions receiving system for metro operation, the described emergent broadcast captions receiving system for metro operation can realize the emergent broadcast captions method of reseptance for metro operation of the present invention, but the implement device of the emergent broadcast captions method of reseptance for metro operation of the present invention includes but not limited to the emergent broadcast captions receiving system for metro operation of the present invention.
As shown in Figure 4, the described emergent broadcast captions receiving system 400 for metro operation comprises connected subway television receive terminal 410, and playing module 430 resolved in subway display screen 420 and captions; Described subway television receive terminal 410 comprises: captions receiver module 411, Multiplexing module 412.Described captions are resolved playing module 430 and are connected respectively with subway display screen 420 with described Multiplexing module 412; Described captions are resolved playing module 430 and are comprised: the horizontal rolling resolution unit 431 of captions, captions packet parsing unit 432, the full frame resolution unit 433 of captions.In actual applications, described captions are resolved playing module 430 and can be arranged in subway television receive terminal 410, also can be arranged in subway display screen 420.
Described captions receiver module 411, receives the privately owned TS stream of broadcasting and TV multi-band broadcast.
Described Multiplexing module 412 is connected with described captions receiver module 411, for described privately owned TS stream sets up privately owned PID passage, carries out multiplexing by described privately owned TS stream with real-time subway TV programme.
The horizontal rolling resolution unit 431 of described captions is connected with subway display screen 420 respectively with described Multiplexing module 412, judge whether described privately owned TS stream is roll titles, if then first background is plotted on from left to right region that described subway display screen specifies, then described emergent broadcast caption content rolled in background, the transverse direction rolling realizing emergent broadcast captions is play.
Described captions packet parsing unit 432 is connected with subway display screen 420 respectively with described Multiplexing module 412, judge whether described privately owned TS stream is grouping captions, if then when receiving described privately owned TS stream, the subtitle segment numbering increased in Extended Protocol by DVB subtitling standard searches the numbering of the emergent broadcast captions received, if the numbering of described emergent broadcast captions is mated with the numbering of described subway television receive terminal, then show described emergent broadcast captions; If described emergent broadcast captions be numbered 0, then all subway television receive terminals all show.
The full frame resolution unit of described captions 433 is connected with subway display screen 420 respectively with described Multiplexing module 412, judge whether described privately owned TS stream is full frame captions, if then read full frame picture number, so that the full frame picture choosing reference numeral from a ROM carries out follow-up display.
Described subway display screen 420 is resolved playing module 430 by described captions and is connected with described Multiplexing module 412, shows described emergent broadcast captions and real-time subway TV programme, shows described emergent broadcast captions with the broadcasting form after resolving.
In the present invention, the interpolation of emergent captions is unaided, completely uncorrelated with program making process, and emergent captions only just carry out multiplexing broadcast with program when needs are play, and meet emergent demand; The present invention utilizes broadcasting and TV multi-band broadcast TS to flow, and there is not any interference problem, ensure that the smooth transmission of emergent caption signal; The present invention only needs software just can realize, and saves cost relative to traditional film titler; The addition manner of emergent captions of the present invention can not affect the broadcast effect of program, and emergent captions can show with the form of any needs, can not destroy the integrality of program video.
In sum, the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (10)
1. for an emergent broadcast captions sending method for metro operation, it is characterized in that, the described emergent broadcast captions sending method for metro operation comprises:
Emergent broadcast captions are made into privately owned TS to flow;
Utilize broadcasting and TV frequency range that described privately owned TS streaming is sent to subway television receive terminal.
2. the emergent broadcast captions sending method for metro operation according to claim 1, is characterized in that: described privately owned TS stream makes according to DVB subtitling standard.
3. the emergent broadcast captions sending method for metro operation according to claim 2, is characterized in that, the described emergent broadcast captions sending method for metro operation also comprises:
Increase by one first subtitle segment is set in the Extended Protocol of described DVB subtitling standard and realizes the horizontal broadcasting of rolling of captions;
Second subtitle segment of increase by order to the grouping of specifying captions to use is set in the Extended Protocol of described DVB subtitling standard, increase by one is set in the Extended Protocol of described DVB subtitling standard in order to set the 3rd subtitle segment of the grouping of single or multiple Set Top Box, realizes captions grouping and play; Described second subtitle segment and described privately owned TS flow together to pack and send; Described 3rd subtitle segment sends separately;
Preset in described privately owned TS stream and edit full frame picture number and realize the full frame played in full screen of captions.
4. for an emergent broadcast captions method of reseptance for metro operation, it is characterized in that, the described emergent broadcast captions method of reseptance for metro operation comprises:
Subway television receive terminal is that the privately owned TS stream be made up of emergent broadcast captions received sets up privately owned PID passage;
Described privately owned TS stream carries out multiplexing with real-time subway TV programme by subway television receive terminal, is rendered on subway display screen by described emergent broadcast captions.
5. the emergent broadcast captions method of reseptance for metro operation according to claim 4, is characterized in that: described subway television receive terminal utilizes DVB standard the emergent broadcast caption content of described privately owned TS stream to be presented on described subway display screen.
6. the emergent broadcast captions method of reseptance for metro operation according to claim 5, is characterized in that, the described emergent broadcast captions method of reseptance for metro operation also comprises:
Background is first plotted on the from left to right region that described subway display screen specifies by described subway television receive terminal, then described emergent broadcast caption content is rolled in background, and the transverse direction realizing emergent broadcast captions is rolled and play;
Oneself is set to the grouping of specifying by described subway television receive terminal according to self numbering, when receiving described privately owned TS stream, judge whether described privately owned TS stream is grouping captions, if the subtitle segment numbering increased in the Extended Protocol then by DVB subtitling standard searches the numbering of the emergent broadcast captions received, if the numbering of described emergent broadcast captions is mated with the numbering of described subway television receive terminal, then show described emergent broadcast captions; If described emergent broadcast captions be numbered 0, then all subway television receive terminals all show;
Described subway television receive terminal judges whether described privately owned TS stream is full frame captions, if then read full frame picture number, so that the full frame picture choosing reference numeral from a ROM carries out follow-up display.
7. for an emergent broadcast captions transmitting system for metro operation, it is characterized in that, the described emergent broadcast captions transmitting system for metro operation comprises:
TS flows generation module, according to DVB subtitling standard, emergent broadcast captions is made into privately owned TS and flows;
TS flows sending module, flows generation module be connected with described TS, utilizes broadcasting and TV frequency range that described privately owned TS streaming is sent to subway television receive terminal.
8. the emergent broadcast captions transmitting system for metro operation according to claim 7, is characterized in that, the emergent broadcast captions transmitting system for metro operation also comprises:
The horizontal module of rolling of captions, flows generation module with described TS and is connected, and arranges increase by one first subtitle segment and realize captions laterally rolling in the Extended Protocol of described DVB subtitling standard;
Captions grouping playing module, flow generation module with described TS to be connected, second subtitle segment of increase by order to the grouping of specifying captions to use is set in the Extended Protocol of described DVB subtitling standard, increase by is set in the Extended Protocol of described DVB subtitling standard in order to set the 3rd subtitle segment of the grouping of single or multiple Set Top Box; Described second subtitle segment and described privately owned TS flow together to pack and send; Described 3rd subtitle segment sends separately;
Captions played in full screen module, flows generation module with described TS and is connected, in described privately owned TS stream, preset full frame picture number.
9. for an emergent broadcast captions receiving system for metro operation, it is characterized in that: the described emergent broadcast captions receiving system for metro operation comprises connected subway television receive terminal and subway display screen;
Described subway television receive terminal comprises:
Captions receiver module, receives the privately owned TS stream of broadcasting and TV multi-band broadcast;
Multiplexing module, is connected with described captions receiver module, for described privately owned TS stream sets up privately owned PID passage, carries out multiplexing by described privately owned TS stream with real-time subway TV programme;
Described subway display screen is connected with described Multiplexing module, shows described emergent broadcast captions and real-time subway TV programme.
10. the emergent broadcast captions receiving system for metro operation according to claim 9, it is characterized in that: the described emergent broadcast captions receiving system for metro operation also comprises the captions be connected respectively with described Multiplexing module and subway display screen and resolves playing module, described captions are resolved playing module and are comprised:
The horizontal resolution unit of rolling of captions, be connected respectively with subway display screen with described Multiplexing module, judge whether described privately owned TS stream is roll titles, if then first background is plotted on from left to right region that described subway display screen specifies, then described emergent broadcast caption content rolled in background, the transverse direction rolling realizing emergent broadcast captions is play;
Captions packet parsing unit, be connected respectively with subway display screen with described Multiplexing module, judge whether described privately owned TS stream is grouping captions, if then when receiving described privately owned TS stream, the subtitle segment numbering increased in Extended Protocol by DVB subtitling standard searches the numbering of the emergent broadcast captions received, if the numbering of described emergent broadcast captions is mated with the numbering of described subway television receive terminal, then show described emergent broadcast captions; If described emergent broadcast captions be numbered 0, then all subway television receive terminals all show;
The full frame resolution unit of captions, is connected with subway display screen respectively with described Multiplexing module, judges whether described privately owned TS stream is full frame captions, if then read full frame picture number, so that the full frame picture choosing reference numeral from a ROM carries out follow-up display.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410265024.XA CN105187852B (en) | 2014-06-13 | 2014-06-13 | A kind of emergent broadcast captions sending, receiving method and system for metro operation |
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| CN201410265024.XA CN105187852B (en) | 2014-06-13 | 2014-06-13 | A kind of emergent broadcast captions sending, receiving method and system for metro operation |
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| CN105187852A true CN105187852A (en) | 2015-12-23 |
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| CN112367539A (en) * | 2020-10-31 | 2021-02-12 | 中电系统建设工程有限公司 | Subway emergency broadcasting method and system, intelligent terminal and storage medium |
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