CN108259103A - A kind of emergent broadcast method, system, terminal and computer-readable medium - Google Patents
A kind of emergent broadcast method, system, terminal and computer-readable medium Download PDFInfo
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- CN108259103A CN108259103A CN201810142774.6A CN201810142774A CN108259103A CN 108259103 A CN108259103 A CN 108259103A CN 201810142774 A CN201810142774 A CN 201810142774A CN 108259103 A CN108259103 A CN 108259103A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/59—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for emergency or urgency
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/65—Arrangements characterised by transmission systems for broadcast
- H04H20/69—Optical systems
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Abstract
The embodiment of the invention discloses a kind of emergent broadcast method, system, terminal and computer-readable medium, wherein this method includes：Optical signal is received from passive optical network, and converts optical signal into digital signal；Judge whether digital signal is emergent broadcast signal；If so, digital signal is converted into audio signal, and playing audio signal.A kind of emergent broadcast method provided in an embodiment of the present invention, system, terminal and computer-readable medium, ensure that the promptness and accuracy of emergent broadcast, and transmission capacity is big, without emergent broadcast network reconnection.
Description
Technical field
The present embodiments relate to emergent broadcast technology more particularly to a kind of emergent broadcast method, system, terminal and calculating
Machine readable medium.
Background technology
Emergent broadcast refers to public when the burst such as major natural disasters, accident, public health and social safety occurs
During crisis, to a kind of faster message transmission channel of public's offer.Accurately emergent broadcast can be instructed effectively in real time
The withdrawing of the people, hedging, life and property loss is preferably minimized.
At present, main emergency broadcase system form is divided into following three kinds：(Digital is broadcasted based on cable digital TV
Video Broadcast-Cable, DVB-C) ground coaxial line emergency broadcase system；Based on digital TV ground broadcasting transmission
System frame structure, Channel Coding and Modulation (Digital Television Terrestrial Multimedia
Broadcasting, DTMB) terrestrial wireless emergency broadcase system；Based on radio broadcasting digital display circuit (Radio Digital
System, RDS) wireless frequency modulation emergency broadcase system.
The shortcomings that ground coaxial line emergency broadcase system based on DVB-C is：First, emergent broadcast terminal is bonding machine top
The terminal of box business wherein the only emergent playback terminal in part is built-in with horn circuit, can realize the business of emergent broadcast；The
Two, since set-top box has the limitation of stand-by power consumption, it can not be realized under true standby mode and timely respond to emergent broadcast, be easy to cause
Important information cannot be reported in time；Third, the coaxial line transmission mode of use are limited with bandwidth, cause transmission capacity smaller.
The shortcomings that terrestrial wireless emergency broadcase system based on DTMB is：First, emergent broadcast terminal is similarly bonding machine
The terminal of top box business, so emergent broadcast business can be realized, and really treating by being only partly built-in with the terminal of horn circuit
Emergent broadcast can not be timely responded under machine pattern；Second, using wireless transmission there are certain wireless signal interference problem, cause
Emergency information cannot be reported accurately；Third, wireless transmission method are limited with bandwidth, cause transmission capacity smaller.
The shortcomings that wireless frequency modulation emergency broadcase system based on RDS is：First, emergent broadcast terminal is based on frequency modulation
(Frequency Modulation, FM) emergent broadcast terminal, the Terminal Type are sound device, are not normal power supply unit, deposit
Idle close situation, so as to will appear the situation that emergency information cannot be reported in time；Second, it is passed using wireless frequency modulation signal
Defeated, presence signal area coverage and wireless signal interference problem cause emergency information that cannot accurately report；Third, it is wireless to adjust
Frequency mode is limited with bandwidth, causes transmission capacity smaller.
To sum up, above-mentioned three kinds of systems have that stand-by power consumption or idle are closed due to terminal, lead to emergent broadcast not
It can report in time；Terrestrial wireless emergency broadcase system based on DTMB is all with the wireless frequency modulation emergency broadcase system based on RDS
Wireless signal transmission, there are wireless signal interference problems, cause emergent broadcast that cannot accurately report；And above-mentioned three kinds of transmission modes
All there is bandwidth limitation, cause transmission capacity smaller.
Invention content
In view of this, the embodiment of the present invention provides a kind of emergent broadcast method, system, end based on broadcasting and TV passive optical network
End and computer-readable medium, ensure that the promptness and accuracy of emergent broadcast, and transmission capacity is big, without emergent broadcast net
Network is rebuild.
In a first aspect, an embodiment of the present invention provides a kind of emergent broadcast method, including：
Optical signal is received from passive optical network, and the optical signal is converted into digital signal；
Judge whether the digital signal is emergent broadcast signal；
If so, the digital signal is converted into audio signal, and play the audio signal.
Second aspect, an embodiment of the present invention provides a kind of system, including：
Emergent front end, Optical Distribution Network and emergency terminal；
The optical signal for emergent broadcast signal to be converted into optical signal, and is accessed passive light by the emergent front end
Network, wherein the emergent broadcast signal includes procotol IP data packets and code stream TS data packets；
The Optical Distribution Network, for the optical signal to be assigned to the emergency terminal, wherein the Optical Distribution Network
Including Ethernet Optical Distribution Network and gigabit Optical Distribution Network, the wherein method of salary distribution includes three wave of three wave of single fiber and double-fiber；
The emergency terminal, including：
The optical signal for receiving optical signal from passive optical network, and is converted into number by optical signal receiving module
Signal；
Signal judgment module, for judging whether the digital signal is the emergent broadcast signal；
Audio playing module, for when the digital signal is the emergent broadcast signal, the digital signal to be turned
Audio signal is turned to, and passes through loudspeaker and plays the audio signal.
The third aspect, an embodiment of the present invention provides a kind of terminal, including：
One or more processors；
Memory, for storing one or more programs；
When one or more of programs are performed by one or more of processors so that one or more of processing
Device realizes the emergent broadcast method as described in any embodiment of the present invention.
Fourth aspect, an embodiment of the present invention provides a kind of computer readable storage mediums, are stored thereon with computer journey
Sequence realizes the emergent broadcast method as described in any embodiment of the present invention when the program is executed by processor.
A kind of emergent broadcast method provided in an embodiment of the present invention, terminal and computer-readable medium, wherein terminal is interior
The continuous electric network equipment of loudspeaker is put, ensure that the promptness of emergent broadcast；Make transmission capacity big, anti-interference using optical fiber transmission
Ability is strong, ensure that the accuracy of emergent broadcast；And emergent broadcast is carried out based on broadcasting and TV passive optical network, without emergent broadcast net
Network is rebuild, and using existing Network Management System, realizes the management such as authentication and the subregion of emergent broadcast.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
Have technology describe needed in attached drawing do one and simply introduce, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments, for those of ordinary skill in the art, without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of emergent broadcast method flow diagram that the embodiment of the present invention one provides；
Fig. 2 is a kind of emergency broadcase system structure diagram provided by Embodiment 2 of the present invention；
Fig. 3 is that answering for three wave optical signal of double-fiber is received in a kind of emergency broadcase system structure provided by Embodiment 2 of the present invention
The structure diagram of anxious terminal；
Fig. 4 is that answering for three wave optical signal of single line is received in a kind of emergency broadcase system structure provided by Embodiment 2 of the present invention
The structure diagram of anxious terminal；
Fig. 5 is three wave system schematic of double-fiber in a kind of emergency broadcase system structure provided by Embodiment 2 of the present invention；
Fig. 6 is three wave system schematic of single fiber in a kind of emergency broadcase system structure provided by Embodiment 2 of the present invention；
Fig. 7 is a kind of structure diagram for terminal that the embodiment of the present invention three provides.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, hereinafter with reference to attached in the embodiment of the present invention
Figure, technical scheme of the present invention is clearly and completely described by embodiment, it is clear that described embodiment is the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Go out all other embodiments obtained under the premise of creative work, shall fall within the protection scope of the present invention.
Embodiment one
Fig. 1 is a kind of emergent broadcast method flow diagram that the embodiment of the present invention one provides, and the present embodiment is applicable to meet an urgent need
The situation of broadcast, this method can be realized by terminal, such as can be ONT Optical Network Terminal (Optical Network
Terminal, ONT), it can specifically be implemented by the software in terminal and/or hardware.Referring to Fig. 1, the emergent broadcast method packet
Include following steps：
S110, optical signal is received from passive optical network, and converts optical signal into digital signal.
Wherein, passive optical network (Passive Optical Network, PON) is a kind of optical fiber transmission of point-to-multipoint
And access technology, downlink, using time division multiple access way, can neatly form tree-like, star-like, bus using broadcast mode, uplink
The topological structures such as type only need to install a simple optical splitter, therefore PON technologies have saving optical cable in optical branch point
The advantages that resource, bandwidth resources are shared, save computer room investment, fast, the comprehensive networking of networking speed is at low cost, has become optical fiber and enters
The preferred option of family (Fiber To The Home, FTTH) technology.
PON system structure includes optical line terminal (Optical Line Terminal, OLT), optical network unit
(Optical Network Unit, ONU) and Optical Distribution Network (Optical Distribution Network, ODN), passes through
ODN connects OLT and ONU.Different data link layer technologies and physical layer PON technologies, which combine, forms different PON technologies,
Such as：Ethernet Ethernet+PON forms EPON, asynchronous transfer mode (Asynchronous Transfer Mode,
ATM)/gigabit networks encapsulation format (G-PON Encapsulation Mode, GEM)+PON then forms GPON.
Wherein, broadcasting and TV FTTH technologies bearer service can be divided into broadcast television service and wideband switch-in business.That is the light of PON
The optical signal transmitted in fibre includes the optical signal of three wavelength, respectively radio and television optical signal, downstream broadband data optical signal
With upstream baseband data optical signal.Wherein, the transmission mode of three kinds of wavelength channels can be divided into three wave of single fiber and double-fiber
Three waves.Wherein, three wave of single fiber is that the optical signal of three kinds of different wave lengths is merged into a fiber-optic signal using optical multiplexer, is passed through
Identical physical transmission channel reaches subscriber household；Three wave of double-fiber exists respectively for radio and television optical signal with wideband data optical signal
It is transmitted in different fibre cores, respectively reaches subscriber household by different physical transmission channels.
Wherein, the optical signal received from PON is radio and television optical signal and downstream broadband data optical signal, can be incited somebody to action
Radio and television optical signal and downstream broadband data optical signal are converted into digital signal, to be used for judging whether digital signal is emergent
Broadcast singal.
Optionally, it is described that optical signal is received from passive optical network, including：
By cable television CATV interfaces, first wave length optical signal is received from passive optical network；
By passive optical network PON interface, second wave length optical signal is received from passive optical network；
Alternatively, by CATV interfaces, multiplex optical signal is received from passive optical network；
By optical branching filter by multiplex optical signal partial wave, first wave length optical signal and second wave length optical signal are obtained.
Wherein, when transmission mode is three wave of double-fiber, terminal receives optical signal by two ports from two optical fiber respectively.
Can be specifically to pass through CATV interface first wave length optical signals, i.e. radio and television optical signal；Pass through PON interfaces
Two wavelength channels, i.e. downstream broadband data optical signal.
Wherein, when transmission mode is three wave of single fiber, terminal can receive multiplex optical signal by a port first, then
Multiplex optical signal is subjected to partial wave by optical branching filter.Can be specifically, by CATV interface multiplex optical signals, to pass through light
Multiplex optical signal partial wave is first wave length optical signal and second wave length optical signal by channel-splitting filter, i.e., can be broadcasted by partial wave
TV optical signal and downstream broadband data optical signal.
Optionally, digital signal is converted optical signal into include：
Radio circuit is turned by light, first wave length optical signal is converted into radiofrequency signal；
Radiofrequency signal is demodulated by intermediate-freuqncy signal by tuner；
Intermediate-freuqncy signal is converted by code stream TS data packets by set-top box processes device STB CPU.
Wherein, first wave length optical signal is converted into the process of digital signal, it can be understood as by radio and television optical signal
The process of broadcast television data is converted into, that is, is converted into the process of code stream (Transport Stream, TS) data packet.It can
To be converted into radiofrequency signal by the way that optical signal is turned radio circuit by light, radiofrequency signal is demodulated into intermediate frequency by tuner and is believed
Number, intermediate-freuqncy signal is turned by set-top box processes device (Set-Top-Box Central Processing Unit, STB CPU)
Turn to TS data packets.
Optionally, digital signal is converted optical signal into further include：
Second wave length optical signal is converted by procotol IP data packets by passive optical network processor PON CPU.
Wherein, second wave length optical signal is converted into the process of digital signal, it can be understood as by downstream broadband data light
Signal is converted into the process of wideband data, that is, is converted into the mistake of procotol (Internet Protocol, IP) data packet
Journey.Can by passive optical network processor (Passive Optical Network Central Processing Unit,
PON CPU) downstream broadband data optical signal is converted into IP data packets.Wherein, PON CPU can select 9603 chips of RTL into
Row processing.
Terminal by the way that the optical signal of reception is converted into digital signal, can be used for further judging in digital signal whether
Include emergent broadcast signal, it, can be with the loudspeaker that terminal carries to broadcast singal of meeting an urgent need when including emergent broadcast signal
It is broadcasted, because terminal is continuous electric network equipment, so as to ensure that the promptness of emergent broadcast.
S120, judge whether digital signal is emergent broadcast signal.
Wherein, judge whether digital signal is emergent broadcast signal, can include judging TS data packets or judge IP data
Whether packet is emergent broadcast signal.
Optionally, when digital signal is TS data packets, it can judge that the packet of TS data packets is identified whether by STB CPU
Packet for emergent broadcast signal identifies.
Optionally, when digital signal is IP data packets, the identification information of IP data packets can be judged by PON CPU is
The no identification information for emergent broadcast signal.
S130, if so, digital signal is converted into audio signal, and playing audio signal.
Wherein, digital signal is converted into audio signal, can includes being converted into sound by TS data packets or by IP data packets
Frequency signal.
Optionally, when digital signal is TS data packets, TS decoded packet datas can be believed for audio by STB CPU
Number.
Optionally, when digital signal is IP data packets, IP data packets can be sent to STB CPU；Pass through STB CPU
IP data packets are converted into audio signal.Wherein STB CPU can select HI3716 family chips to be handled.
By the way that the corresponding digital signal of emergent broadcast signal is converted into audio signal, and playing audio signal, can make
User gets emergent broadcast information in time.
Optionally, when digital signal is IP data packets, after judging whether digital signal is emergent broadcast signal, may be used also
To include：
If so, IP data packets are sent to by personal terminal by PON CPU, so that personal terminal converts IP data packets
For audio signal, and playing audio signal.
Wherein, individual terminal devices are the terminal device that can be surfed the Internet by cable or WIFI, can include mobile phone,
The terminal devices such as PC, tablet computer, intelligent sound.Wherein, PON CPU can by the form of network interface or WIFI with
People's terminal connects, so as to carry out the transmission of IP data packets.Wherein, IP data packets can be converted into audio signal simultaneously by personal terminal
It plays, the user of personal terminal can be used to know emergent broadcast.
By the way that the corresponding IP data packets of emergent broadcast signal are pushed to personal terminal, make user slightly remote apart from terminal
Place can also be received emergent broadcast signal by personal terminal, increase the broadcast mode of emergent broadcast signal, so as to carry
The probability that high emergent broadcast is known by user.
Optionally, it after digital signal is converted into audio signal, further includes：
Whether the audio signal quantity to be played such as judgement are more than 1；
If so, the priority of the audio signal to be played such as judgement, and according to priority played in order audio signal.
Wherein, when terminal is by receiving and convert optical signal, when obtaining the corresponding audio signal of multiple emergent broadcasts, terminal
It may determine that the precedence information carried in the audio signal for waiting in line to play, carried out by the grade of precedence information
Sequence, and sequentially playing audio signal；It wherein, can be according to acquisition audio signal when the grade of precedence information is identical
Priority time sequencing is ranked up and plays；In addition, when precedence information is identical, and when answering audio signal identical, can only broadcast
Put the audio signal first obtained.
Illustratively, when the audio data converted from TS data packets and the audio data obtained from IP data packets, it is
During same audio data, the audio data first obtained can be judged as to the higher audio signal of priority, it optionally, can not
The audio signal obtained after broadcasting.
By the priority of the audio signals to be played such as judgement, user can be made preferentially to obtain priority level higher
Emergent broadcast information, so as to which user be instructed preferentially to carry out withdrawing hedging according to higher ranked emergent broadcast information, by life wealth
Production loss is preferably minimized.
Optionally, playing audio signal, including：When loop play preset time or preset times, stop playing audio
Signal；Alternatively, when halt instruction is received, stop playing audio signal.
Wherein, playing audio signal can be the signal that real-time plays, i.e., played while audio signal is received
Once；Can also be that cyclicity plays, wherein can stop playing when loop play reaches preset times or preset time,
It can stop playing when receiving halt instruction；Wherein halt instruction can be that user side is sent to terminal device, also may be used
To be that emergent front end is sent to terminal device when confirming that urgent dangerous situation has been eliminated.
The corresponding audio signal of emergent broadcast can play in real time, can also loop play, can meet cycle stop
Stop during condition, can also be stopped according to halt instruction, so as to increase audio signal broadcast mode, emergent broadcast can be optimized
System performance, while users on diversity can also be met.
Emergent broadcast method provided in this embodiment, wherein terminal are the continuous electric network equipment of built-in loudspeaker, so as to protect
The promptness of emergent broadcast is demonstrate,proved；Make that transmission capacity is big, strong antijamming capability using optical fiber transmission, ensure that the standard of emergent broadcast
True property；And emergent broadcast is carried out based on broadcasting and TV passive optical network, without emergent broadcast network reconnection, and using existing network
Management system realizes the management such as authentication and the subregion of emergent broadcast.
Embodiment two
Fig. 2 is a kind of emergency broadcase system structure diagram provided by Embodiment 2 of the present invention, and the present embodiment is applicable to
Emergent broadcast.The system that the present embodiment is provided can perform the emergent broadcast method that the embodiment of the present invention one is provided, and has and holds
The corresponding function module of row method and advantageous effect.
Referring to Fig. 2, emergency broadcase system provided in this embodiment includes：Emergent front end 210, Optical Distribution Network 220 and
Emergency terminal 230；
Emergent front end 210, for emergent broadcast signal to be converted into optical signal, and accesses passive optical network by optical signal,
Wherein emergent broadcast signal includes procotol IP data packets and code stream TS data packets；
Optical Distribution Network 220, for optical signal to be assigned to emergency terminal, wherein Optical Distribution Network includes Ethernet light point
Distribution network and gigabit Optical Distribution Network, the wherein method of salary distribution include three wave of three wave of single fiber and double-fiber；
Emergency terminal 230, including：
Optical signal receiving module 231 for receiving optical signal from passive optical network, and converts optical signal into digital letter
Number；
Signal judgment module 232, for judging whether digital signal is emergent broadcast signal；
Audio playing module 233, for when digital signal is emergent broadcast signal, digital signal to be converted into audio letter
Number, and playing audio signal.
Preferably, Fig. 3 is a kind of emergency broadcase system for receiving three wave optical signal of double-fiber provided by Embodiment 2 of the present invention
The structure diagram of emergency terminal in structure.
Wherein, optical signal receiving module can correspond to CATV interfaces, PON interfaces, light and turn radio circuit, light bidirectional transmit-receive
Component (Bi-directional Optical Sub-Assembly, BOSA), STB CPU and PON CPU.It is connect by CATV
Mouth receives first wave length optical signal, i.e. radio and television optical signal；By PON interface second wave length optical signals, that is, descend line width
Band data optical signal transmits luminous signal to PON CPU by BOSA.Turn radio circuit by light to turn first wave length optical signal
Turn to radiofrequency signal；Radiofrequency signal is demodulated by intermediate-freuqncy signal by tuner；Intermediate-freuqncy signal is converted by code by STB CPU
Flow TS data packets.Second wave length optical signal is converted by procotol IP data packets by PON CPU.
Wherein, signal judgment module can correspond to STB CPU and PON CPU.When digital signal is TS data packets,
It can judge that the packet of TS data packets identifies whether the packet mark for emergent broadcast signal by STB CPU.When digital signal is IP
During data packet, can be judged by PON CPU IP data packets identification information whether be emergent broadcast signal identification information.
Wherein, audio playing module can correspond to STB CPU, power amplifier (Power Amplifier, PA) and
Loudspeaker.When digital signal be TS data packets when, can by STB CPU by TS decoded packet datas be audio signal.When number is believed
Number be IP data packets when, IP data packets can be sent to STB CPU；IP data packets are converted into audio by STB CPU to believe
Number.Audio signal is amplified, and pass through loudspeaker and report audio signal by PA.
In addition, emergency terminal can also include, radio frequency output (Radio Frequency Out, RF OUT) interface or
High-definition multimedia interface (High Definition Multimedia, HDMI), regards for user side set-top box coaxial electrical
The access of signal or high definition TV signal plays TV programme for the set-top box module inside subscriber household；It can be with
Including wired network mouth and WIFI module, IP data packets are used for transmission, broadband access related service is carried out for personal terminal；It can be with
Including DDR and FLASH memory, for storing STB CPU and PON cpu system operation program, operation data or answering
Anxious audio data broadcasting etc..
Preferably, Fig. 4 is a kind of emergency broadcase system for receiving three wave optical signal of single fiber provided by Embodiment 2 of the present invention
The structure diagram of emergency terminal in structure.The difference lies in emergency terminal is first with emergency terminal shown in Fig. 3 for the terminal
Multiplex optical signal is received by CATV ports, multiplex optical signal is subjected to partial wave using optical branching filter, so as to obtain first wave
Long optical signal and second wave length optical signal.The subsequent processing of first wave length optical signal and second wave length optical signal with it is shown in Fig. 3
Emergency terminal is identical to the processing of first wave length optical signal and second wave length optical signal.
Illustratively, Fig. 5 is that three wave system of double-fiber is united in a kind of emergency broadcase system structure provided by Embodiment 2 of the present invention
Schematic diagram.
In emergent front end, emergency information is converted into IP data packets by one side emergent broadcast information platform, and is transmitted to
On IP Metropolitan Area Network (MAN)s.OLT obtains the corresponding IP data packets of emergency information and broadband services IP data packets from IP Metropolitan Area Network (MAN)s, and will be upper
It states IP data packets and is converted into optical signal access Optical Distribution Network, the IP data packets of wherein downlink are converted into the light that wavelength is λ 2 and believe
Number, the IP data packets of uplink are converted into the optical signal that wavelength is λ 3.Another aspect emergent broadcast information platform sends out emergency information
It send to broadcast television service platform, emergency information is converted into TS data packets by broadcast television service platform, together with normal broadcast electricity
It regards TS data packets and is converted into optical signal of the wavelength as λ 1 together, Optical Distribution Network is accessed by optical sender and fiber amplifier.Its
In, it by Network Management System, can realize the management such as authentication and the subregion of emergent broadcast.Wherein, IP Metropolitan Area Network (MAN)s can connect
Internet obtains data in internet.
In Optical Distribution Network, by different optical fiber, transmission wavelength is the optical signal of λ 1 respectively and wavelength is 2/ λ 3 of λ
Optical signal.On the optical fiber for the optical signal that transmission wavelength is λ 1, the optical signal that wavelength is λ 1 is divided, and transmit by optical splitter
To multiple emergency terminals.On the optical fiber for the optical signal that transmission wavelength is 2/ λ 3 of λ, optical splitter carries out the optical signal that wavelength is λ 2
Light splitting, and it is transmitted to multiple emergency terminals；And receive the optical signal that the wavelength that emergency terminal is sent is λ 3.
In emergency terminal, terminal is respectively by two ports from the optical signal and wavelength of a length of λ 1 of two optical fiber received waves
Optical signal for λ 2；The optical signal that wavelength is λ 1 is converted into TS data packets, the optical signal that wavelength is λ 2 is converted into IP data
Packet；Judge whether TS data packets or IP data packets are emergent broadcast signal；It, will be digital when digital signal is emergent broadcast signal
Signal is converted into audio signal, and playing audio signal.
Illustratively, Fig. 6 is that three wave system of single fiber is united in a kind of emergency broadcase system structure provided by Embodiment 2 of the present invention
Schematic diagram.Wherein, three wave of single fiber and three wave of double-fiber are distinguished as, and in Optical Distribution Network, the light that wavelength is λ 1, λ 2 and λ 3 are believed
Number by optical multiplexer multiplex to same fiber-optic signal, pass through identical physical transmission channel and reach emergency terminal.Correspondingly,
In emergency terminal, terminal can receive multiplex optical signal by a port first, believe multiplex light using optical branching filter
Number carry out partial wave, so as to obtain the optical signal that wavelength is λ 1 and the optical signal that wavelength is λ 2.
Emergency broadcase system provided in this embodiment carries out emergent broadcast based on broadcasting and TV passive optical network, without emergent wide
Network reconnection is broadcast, and using existing Network Management System, realizes the management such as authentication and the subregion of emergent broadcast；Using optical fiber
Transmission makes that transmission capacity is big, strong antijamming capability, ensure that the accuracy of emergent broadcast；And wherein terminal for built-in loudspeaker not
The network equipment is powered off, so as to ensure that the promptness of emergent broadcast.
Embodiment three
A kind of terminal is present embodiments provided, can be used for emergent broadcast.Fig. 7 is one kind that the embodiment of the present invention three provides
The structure diagram of terminal.Referring to Fig. 7, which includes：
One or more processors 710；
Memory 720, for storing one or more programs；
When one or more of programs are performed by one or more of processors 710 so that one or more of
Processor 710 realizes the emergent broadcast method proposed such as embodiment one.
In Fig. 7 by taking a processor 710 as an example；Processor 710 and memory 720 can be connected by bus or other modes
It connects, in Fig. 7 for being connected by bus.
Memory 720 is used as a kind of computer readable storage medium, and journey is can perform available for storage software program, computer
Sequence and module, such as the corresponding program instruction/module of emergent broadcast method in the embodiment of the present invention.Processor 710 passes through fortune
Row is stored in software program, instruction and module in memory 720, so as to perform the various function application of terminal and data
Processing, that is, realize above-mentioned emergent broadcast method.
Memory 720 can mainly include storing program area and storage data field, wherein, storing program area can store operation system
Application program needed for system, at least one function；Storage data field can be stored uses created data etc. according to terminal.This
Outside, memory 720 can include high-speed random access memory, can also include nonvolatile memory, for example, at least one
Disk memory, flush memory device or other non-volatile solid state memory parts.In some instances, memory 720 can be into one
Step is included relative to the remotely located memory of processor 710, these remote memories can pass through network connection to terminal.On
The example for stating network includes but not limited to internet, intranet, LAN, mobile radio communication and combinations thereof.
In addition, according to the different form of terminal, in addition to processor 710 and memory 720, terminal can also include other moulds
Block or structure, for example, terminal have RF OUT interfaces either HDMI interface for the coaxial TV signal of user side set-top box or
The access of high definition TV signal plays TV programme for the set-top box module inside subscriber household；Terminal has emergent wide
Report function then further includes the related devices such as loudspeaker, power amplifier；Terminal needs to receive optical signal, then further includes BOSA
Component, for receiving and dispatching optical signal；Terminal is the network-termination device for having broadband access, then further includes wired network interface and WIFI moulds
Block is used for transmission IP data packets, and broadband access related service is carried out for personal terminal.
The emergent broadcast method that the terminal that the present embodiment proposes is proposed with embodiment one belongs to same inventive concept, not at this
The technical detail of detailed description can be found in embodiment one in embodiment, and the present embodiment and embodiment one have it is identical beneficial
Effect.
Example IV
The present embodiment provides a kind of computer readable storage mediums, are stored thereon with computer program, which is handled
The emergent broadcast method proposed such as embodiment one is realized when device performs.
The emergent broadcast method that the computer readable storage medium that the present embodiment proposes is proposed with embodiment one belongs to same
Inventive concept, the technical detail of detailed description not can be found in embodiment one, and the present embodiment and embodiment in the present embodiment
One has identical advantageous effect.
By the description above with respect to embodiment, it is apparent to those skilled in the art that, the present invention
It can be realized by software and required common hardware, naturally it is also possible to which by hardware realization, but the former is more in many cases
Good embodiment.Based on such understanding, what technical scheme of the present invention substantially in other words contributed to the prior art
Part can be embodied in the form of software product, which can be stored in computer readable storage medium
In, floppy disk, read-only memory (Read-Only Memory, ROM), random access memory (Random such as computer
Access Memory, RAM), flash memory (FLASH), hard disk or CD etc., including some instructions with so that a computer is set
Standby (can be personal computer, server or the network equipment etc.) performs the method described in each embodiment of the present invention.
Note that it above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The present invention is not limited to specific embodiment described here, can carry out for a person skilled in the art various apparent variations,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above example to the present invention
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
It can include other more equivalent embodiments, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
- A kind of 1. emergent broadcast method, which is characterized in that including：Optical signal is received from passive optical network, and the optical signal is converted into digital signal；Judge whether the digital signal is emergent broadcast signal；If so, the digital signal is converted into audio signal, and play the audio signal.
- 2. according to the method described in claim 1, it is characterized in that, described receive optical signal from passive optical network, including：By cable television CATV interfaces, first wave length optical signal is received from passive optical network；By passive optical network PON interface, second wave length optical signal is received from passive optical network；Alternatively, by the CATV interfaces, multiplex optical signal is received from passive optical network；By optical branching filter by the multiplex optical signal partial wave, the first wave length optical signal and second wave length light letter are obtained Number.
- 3. according to the method described in claim 2, include it is characterized in that, the optical signal is converted into digital signal：Radio circuit is turned by light, the first wave length optical signal is converted into radiofrequency signal；The radiofrequency signal is demodulated by intermediate-freuqncy signal by tuner；The intermediate-freuqncy signal is converted by code stream TS data packets by set-top box processes device STB CPU；Judge whether the digital signal is emergent broadcast signal correspondingly, described, including：Judge that the packet of the TS data packets identifies whether that the packet for emergent broadcast signal identifies by the STB CPU；Correspondingly, It is described that the digital signal is converted into audio signal, including：By STB CPU by the TS decoded packet datas be audio signal.
- 4. it according to the method described in claim 2, is further included it is characterized in that, the optical signal is converted into digital signal：The second wave length optical signal is converted by procotol IP data packets by passive optical network processor PON CPU；Judge whether the digital signal is emergent broadcast signal correspondingly, described, including：By the PON CPU judge the IP data packets identification information whether be emergent broadcast signal identification information；Correspondingly, described be converted into audio signal by the digital signal, including：The IP data packets are sent to the STB CPU；The IP data packets are converted by audio signal by the STB CPU.
- 5. according to the method described in claim 4, it is characterized in that, judge whether the digital signal is emergent broadcast described After signal, further include：If so, the IP data packets are sent to by personal terminal by the PON CPU, so that the personal terminal is by described in IP data packets are converted into audio signal, and play the audio signal.
- 6. according to any methods of claim 1-4, which is characterized in that the digital signal is converted into audio described After signal, further include：Whether the audio signal quantity to be played such as judgement are more than 1；If so, judge the priority of the audio signal to be played such as described, and according to priority played in order audio signal.
- 7. according to any methods of claim 1-4, which is characterized in that it is described to play the audio signal, including：When loop play preset time or preset times, stop playing the audio signal；Alternatively, when halt instruction is received, stop playing the audio signal.
- 8. a kind of emergency broadcase system, which is characterized in that including：Emergent front end, Optical Distribution Network and emergency terminal；The optical signal for emergent broadcast signal to be converted into optical signal, and is accessed passive optical network by the emergent front end, Wherein described emergent broadcast signal includes procotol IP data packets and code stream TS data packets；The Optical Distribution Network, for the optical signal to be assigned to the emergency terminal, wherein the Optical Distribution Network includes Ethernet Optical Distribution Network and gigabit Optical Distribution Network, the wherein method of salary distribution include three wave of three wave of single fiber and double-fiber；The emergency terminal, including：The optical signal for receiving optical signal from passive optical network, and is converted into digital signal by optical signal receiving module；Signal judgment module, for judging whether the digital signal is the emergent broadcast signal；Audio playing module, for when the digital signal is the emergent broadcast signal, the digital signal to be converted into Audio signal, and play the audio signal.
- 9. a kind of terminal, which is characterized in that the terminal includes：One or more processors；Memory, for storing one or more programs；When one or more of programs are performed by one or more of processors so that one or more of processors are real The now emergent broadcast method as described in any in claim 1-7.
- 10. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is by processor The emergent broadcast method as described in any in claim 1-7 is realized during execution.
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| CN201810142774.6A CN108259103B (en) | 2018-02-11 | 2018-02-11 | Emergency broadcasting method, system, terminal and computer readable medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114268844A (en) * | 2021-12-17 | 2022-04-01 | 易视腾科技股份有限公司 | Internet television service emergency guarantee system and method thereof |
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| CN103138861A (en) * | 2013-03-12 | 2013-06-05 | 苏州东奇信息科技有限公司 | Emergency broadcasting system based on digital broadcasting |
| CN103329460A (en) * | 2011-01-20 | 2013-09-25 | 丰恩系统株式会社 | Optical integration system for disaster emergency broadcasting communication |
| CN104660357A (en) * | 2015-03-11 | 2015-05-27 | 四川九州电子科技股份有限公司 | Multi-channel emergency broadcast intelligent terminal system and control method based on priority |
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| CN103329460A (en) * | 2011-01-20 | 2013-09-25 | 丰恩系统株式会社 | Optical integration system for disaster emergency broadcasting communication |
| CN103138861A (en) * | 2013-03-12 | 2013-06-05 | 苏州东奇信息科技有限公司 | Emergency broadcasting system based on digital broadcasting |
| CN104660357A (en) * | 2015-03-11 | 2015-05-27 | 四川九州电子科技股份有限公司 | Multi-channel emergency broadcast intelligent terminal system and control method based on priority |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114268844A (en) * | 2021-12-17 | 2022-04-01 | 易视腾科技股份有限公司 | Internet television service emergency guarantee system and method thereof |
| CN114268844B (en) * | 2021-12-17 | 2023-11-24 | 易视腾科技股份有限公司 | Internet television service emergency guarantee system and method thereof |
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