CN105471533B - The playback method and digital TV terminal of DTV emergent broadcast - Google Patents
The playback method and digital TV terminal of DTV emergent broadcast Download PDFInfo
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- CN105471533B CN105471533B CN201511030194.0A CN201511030194A CN105471533B CN 105471533 B CN105471533 B CN 105471533B CN 201511030194 A CN201511030194 A CN 201511030194A CN 105471533 B CN105471533 B CN 105471533B
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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
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
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Abstract
The invention discloses a kind of playback method of DTV emergent broadcast, this method process includes：When digital TV terminal receives the programme information of the emergent broadcast program of Conditional Access Module Conditional Access Module transmission, program identification and program frequencies are obtained from the programme information, wherein, the Conditional Access Module receive that digital TV front-end issues when including the EMM data packet of programme information of emergent broadcast program, it parses the EMM data packet and obtains the programme information of the emergent broadcast program, and the programme information is transmitted to the digital TV terminal；The digital TV terminal obtains the program stream of the emergent broadcast according to the program identification got in the program frequencies, parses and play the program stream of the emergent broadcast.The present invention also proposes a kind of digital TV terminal.The present invention solves the problems, such as that user can not receive emergent broadcast in time.
Description
Technical field
The present invention relates to digital TV technology more particularly to a kind of playback method sum numbers of DTV emergent broadcast
Word television terminal.
Background technique
When the Sudden Public Crisis such as major natural disasters, emergency event, public health and social safety occur, one is needed
The faster transmission channel of kind is transmitted to Public Crisis situation and emergency measure in common people's hand, and this transmission channel is exactly
Emergent broadcast, the implementation method of present emergent broadcast is temporarily realized using emergency frequency by broadcasting station, but this
The mode of emergent broadcast is played, user must be known by emergency frequency, and need that radio station is adjusted to emergency frequency ability manually
Emergent broadcast is enough listened to, the broadcasting of emergent broadcast cannot be carried out automatically, cause user that can not receive emergent broadcast in time, and then lead
Cause can not know Public Crisis situation and emergency measure in time.
Summary of the invention
The present invention provides the playback method and digital TV terminal of a kind of DTV emergent broadcast, and main purpose is
Solve the problems, such as that user can not receive emergent broadcast in time.
To achieve the above object, the present invention provides a kind of playback method of DTV emergent broadcast, which answers
The playback method suddenly broadcasted includes：
CI standard agreement and the privately owned association of CAM are based on when digital TV terminal receives Conditional Access Module Conditional Access Module
When discussing the programme information of the emergent broadcast program sent, program identification and program frequencies are obtained from the programme information, wherein
What the Conditional Access Module received that digital TV front-end issues includes the EMM data of the programme information of emergent broadcast program
Bao Shi parses the EMM data packet and obtains the programme information of the emergent broadcast program, and the programme information is transmitted to
The digital TV terminal；
The digital TV terminal obtains the emergency according to the program identification got in the program frequencies
The program stream of broadcast parses and plays the program stream of the emergent broadcast.
Preferably, the digital TV terminal obtains institute according to the identification information received in the program frequencies
The step of stating the program stream of emergent broadcast include：
The digital TV terminal obtains the transport stream identification symbol of the emergent broadcast program from the program identification, and
The program stream with transport stream identification symbol is obtained in the program frequencies.
Preferably, the digital TV terminal obtains institute according to the identification information received in the program frequencies
The program stream for stating emergent broadcast, before the step of parsing and playing the program stream of the emergent broadcast, the DTV emergency
The playback method of broadcast further includes：
The digital TV terminal obtains the programme information of current playing program, and saves the programme information；
After described the step of parsing and playing the program stream of the emergent broadcast, the DTV emergent broadcast is broadcast
The method of putting further includes step：
After the emergent broadcast program finishes playing, the digital TV terminal is switched to the program of preservation
The corresponding TV programme of information.
Preferably, described after the step of obtaining program identification and program frequencies in the programme information, the number
The playback method of TV emergent broadcast further includes step：
The digital TV terminal is obtained from the programme information forbids marking keys；
After described the step of parsing and playing the program stream of the emergent broadcast, the DTV emergent broadcast is broadcast
The method of putting further includes：
Forbid marking keys to set lock state for the digital TV terminal according to getting, is connect with shielding
The telecommand received.
Preferably, described after the emergent broadcast program finishes playing, the digital TV terminal is switched into guarantor
After the step of programme information deposited corresponding TV programme, the playback method of the DTV emergent broadcast is also wrapped
It includes：
If it includes that marking keys are forbidden in releasing that digital TV terminal, which receives in the data that Conditional Access Module transmits,
Release the lock state, wherein the digital TV front-end, will after detecting that the emergent broadcast program finishes playing
Releasing forbids marking keys to be bundled in EMM data packet being issued to the Conditional Access Module, the Conditional Access Module parsing
After the EMM data packet, what parsing was obtained includes to release to forbid the data of marking keys to be sent to the DTV whole
End.
In addition, to achieve the above object, the present invention also provides a kind of digital TV terminal, which includes：
Data obtaining module, for receiving, Conditional Access Module Conditional Access Module is based on CI standard agreement and CAM is private
When the programme information for the emergent broadcast program for having agreement to send, program identification and program frequencies are obtained from the programme information,
Wherein, what the Conditional Access Module received that digital TV front-end issues includes the programme information of emergent broadcast program
When EMM data packet, parses the EMM data packet and obtain the programme information of the emergent broadcast program, and the program is believed
Breath is transmitted to the digital TV terminal；
Program playing module, for obtaining the emergency in the program frequencies according to the program identification got
The program stream of broadcast parses and plays the program stream of the emergent broadcast.
Preferably, the program playing module is also used to obtain the emergent broadcast program from the program identification
Transport stream identification symbol, and the program stream with transport stream identification symbol is obtained in the program frequencies.
Preferably, the digital TV terminal further includes：
Information storage module for obtaining the programme information of current playing program, and saves the programme information；
The program playing module is also used to after the emergent broadcast program finishes playing, by the DTV
Terminal switches to the corresponding TV programme of the programme information of preservation.
Preferably, the data obtaining module is also used to obtain from the programme information and forbids marking keys；
State switching module, for forbidding marking keys to set the digital TV terminal to according to getting
Lock state, to shield the telecommand received.
Preferably, the state switching module, if be also used to receive Conditional Access Module transmission data in include
Marking keys are forbidden in releasing, then release the lock state, wherein the digital TV front-end is detecting the emergent broadcast
After program finishes playing, forbids marking keys to be bundled in EMM data packet releasing and be issued to the Conditional Access Module, institute
It states after Conditional Access Module parses the EMM data packet, what parsing was obtained includes to release that the data of marking keys is forbidden to send out
It send to the digital TV terminal.
The playback method and digital TV terminal of DTV emergent broadcast proposed by the present invention, an emergency situation is encountered need
When playing emergent broadcast program, digital TV front-end will need the programme information of the emergency program played to be bundled to EMM data
Bao Zhong, is transferred to Conditional Access Module Conditional Access Module, and Conditional Access Module obtains after parsing to the EMM data received
The programme information of emergent broadcast program is got, and the programme information is sent to digital TV terminal, digital TV terminal obtains
The program identification for including in programme information and program frequencies are taken, and according to the program identification got in the program frequencies
Obtain emergent broadcast program stream simultaneously play emergent broadcast program, in this way, no matter digital TV terminal it is currently playing what is
Program can all switch to emergent broadcast program and play out, and allow the user to receive emergent broadcast program in time.
Detailed description of the invention
Fig. 1 is the flow chart of the playback method first embodiment of DTV emergent broadcast of the present invention；
Fig. 2 is the flow chart of the playback method second embodiment of DTV emergent broadcast of the present invention；
Fig. 3 is the functional block diagram of digital TV terminal first embodiment of the present invention；
Fig. 4 is the functional block diagram of digital TV terminal second embodiment of the present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of playback method of DTV emergent broadcast.
It is the flow chart of the playback method first embodiment of DTV emergent broadcast of the present invention shown in referring to Fig.1.
In the first embodiment, the playback method of the DTV emergent broadcast includes：
Step S10, when digital TV terminal receives the emergent broadcast section of Conditional Access Module Conditional Access Module transmission
When purpose programme information, program identification and program frequencies are obtained from the programme information, wherein the Conditional Access Module connects
Receive that digital TV front-end issues when including the EMM data packet of programme information of emergent broadcast program, parse the EMM number
The digital TV terminal is transmitted to according to the programme information for wrapping and obtaining the emergent broadcast program, and by the programme information.
Conditional Access Module (Conditional Access Module), also referred to as Conditional Access Module, it is a kind of number
Video Conditional Access Module is the equipment of connection a digital television and outside source, can be with digital TV front-end system
It is communicated between system.The digital signal of compression can be changed into television content by it, and be shown on digital TV terminal.
Conditional Access Module and smart card are used cooperatively, for not having for the digital TV integrated machine of set-top box, condition receiving
Block is used cooperatively in the form of CAM card with smart card, and insertion has the digital TV terminal of CI interface, makes the user do not need set-top box
It can directly watch ordered pay-TV content, CAM is stuck in when sending EMM data packet to television terminal, is based on
CI standard agreement and CAM proprietary protocol are sent；For the DTV for using set-top box, Conditional Access Module setting
It in set-top box, also needs to be used cooperatively with smart card, the main authorization of DTV is awarded by smart card at present
Power, user must obtain authorization by exclusive smart card can receive decoded signal, and service provider also can
The enough information for receiving user in this way, including user's name in an account book, address, smart card numbers and the expense for watching DTV
Etc. information.
An emergency situation is encountered when needing to play emergent broadcast, and digital television front-end system is in the emergency for being ready to need to play
After programming, such as the packings such as the video information of emergent broadcast, audio-frequency information and caption information are obtained into emergent broadcast section
Purpose TS flows (Transport Stream, transport stream), and program TS flow data is modulated on certain frequency, which can
By user setting, can be the frequency for being specifically exclusively used in transmission emergent broadcast program, in this way, the emergent broadcast program is independent
Specific frequency is occupied, it, in other examples, can be by multiplexer by the section of emergent broadcast program without using multiplexer
TS stream is formed after mesh stream and other program stream multiplexings, and is modulated in assigned frequency.Then, it is determined that emergent broadcast program
Program identification, the programs information packages such as the program identification of emergent broadcast program played and above-mentioned program frequencies will be needed to arrive
Conditional Access Module, condition reception are issued in EMM (Entitled Manage Message, Entitlement Management Message) data packet
After module receives the EMM data packet of digital TV front-end transmission, parses the EMM data packet and get emergent broadcast program
Programme information, and by include program identification and program frequencies programme information transmission based on CI (common interface,
Common interface) standard agreement and CAM proprietary protocol be to digital TV terminal, wherein and CAM proprietary protocol is by offer condition receiving
The manufacturer of block is specified, and above-mentioned program identification includes network_id (network identity), original_network_id (original net
Network mark), transport_stream_id (transport stream identification) or service_id (service identification) etc. be determined for
The program identification of unique program.
It should be noted that the emergent broadcast program for needing to play out may have more for digital TV front-end
It is a, therefore, when transmitting emergent broadcast program, according to the priority tag in emergent broadcast programme information, first by priority
The program identification of highest emergent broadcast program carries out packing transmission, and the emergent broadcast program to highest priority finishes playing it
Afterwards, then the emergent broadcast program that takes second place of transmission priority, alternatively, in other examples, by multiple emergency for needing to play
Broadcasting multiplex is including the EMM number of the program identification of emergent broadcast program to Conditional Access Module transmission into same TS stream
According to when, can successively be transmitted according to the sequence of priority from high to low.
It, can be to when handling smart card it is understood that user needs to handle smart card when using DTV
Digital television service quotient provides user information, including user's name in an account book, address etc., in this way, digital TV front-end be stored with including
There are the user informations such as station address, therefore, digital TV front-end can basis when issuing EMM data packet to Conditional Access Module
Station address in above-mentioned user information selects some region of user to send, in this way, can be only to the number of relative region
Word TV user sends emergent broadcast program, and other incoherent areas, the then transmission without emergent broadcast program are realized
The directive sending of emergent broadcast program, for digital TV front-end, this mode convenient for emergent broadcast dispensing and
Management.
Step S20, the digital TV terminal obtain in the program frequencies according to the program identification got
The program stream of the emergent broadcast parses and plays the program stream of the emergent broadcast.
The program identification for getting above-mentioned emergent broadcast program and the program frequencies where program, according to the emergent broadcast section
The corresponding specific program mark of mesh obtains the program stream of emergent broadcast from above-mentioned program frequencies, parses and plays the section got
Mesh stream, in one embodiment can be according to the following steps：The digital TV terminal is answered described in obtaining from the program identification
The transport stream identification of anxious broadcast program accords with, and the program stream with transport stream identification symbol is obtained in the program frequencies.
In other embodiments, the available program stream information with task identifier or event ID etc., or
The specific identifier for identifying emergent broadcast program is added in person front end in TS stream, and the specific identifier is packaged in EMM
Conditional Access Module is sent in data packet, digital TV terminal is obtained in above-mentioned program frequencies with the specific identifier
Program stream.
Further, after step slo, this method is further comprising the steps of：
Digital TV terminal is after obtaining program identification and program frequencies in the programme information, to the condition reception
Module sends the notification information for being properly received emergent broadcast, for the Conditional Access Module according to the notification information to described
Digital TV front-end feeds back the notification information.
The interactive set-top box of CAM card or DTV for the digital TV integrated machine with interactive function comes
It says, Conditional Access Module can carry out two-way communication with digital TV front-end, therefore, in digital TV terminal from the section
After obtaining program identification and program frequencies in mesh information, the notice of emergent broadcast can will be properly received by Conditional Access Module
Information feeds back to digital TV front-end, and the notification information carries the address information of user, and digital TV front-end can root
The statistics for successfully launching region to emergent broadcast according to the notification information received, can identify the area for the emergent broadcast that fails
Domain, and emergent broadcast is carried out using other modes for the region of these emergent broadcasts that fail.
The playback method for the DTV emergent broadcast that the present embodiment proposes, an emergency situation is encountered, needs play emergency extensively
When broadcasting program, digital TV front-end will need the identification information of the emergency program played to be bundled to Entitlement Management Message EMM data
Bao Zhong, is transferred to Conditional Access Module Conditional Access Module, and Conditional Access Module obtains after parsing to the EMM data received
The programme information of emergent broadcast program is got, and the programme information is sent to digital TV terminal, digital TV terminal obtains
The program identification for including in programme information and program frequencies are taken, and according to the program identification got in the program frequencies
Obtain emergent broadcast program stream simultaneously play emergent broadcast program, in this way, no matter digital TV terminal it is currently playing what is
Program can all switch to emergent broadcast program and play out, and allow the user to receive emergent broadcast program in time.
Referring to shown in Fig. 2, the first embodiment of the playback method based on DTV emergent broadcast of the present invention proposes this hair
The second embodiment of the playback method of bright DTV emergent broadcast.In the present embodiment, the method and first embodiment
Difference is, before step S20, the playback method of the DTV emergent broadcast further includes：
Step S30, the digital TV terminal obtain the programme information of current playing program, and save the program letter
Breath.
After step S20, this method further includes step：
The digital TV terminal is switched to preservation after the emergent broadcast program finishes playing by step S40
The corresponding TV programme of the programme information.
Before the program stream for playing emergent broadcast, the programme information of digital TV terminal current playing program is first obtained,
Such as channel information, program stream identification etc., and the programme information got is stored, after emergent broadcast program finishes playing,
The corresponding TV programme of programme information can be switched to, do not influence the viewing of user.
Further, after step slo, this method further includes step：
The digital TV terminal is obtained from the programme information forbids marking keys；
After step S20, the playback method of the DTV emergent broadcast further includes step：
Forbid marking keys to set lock state for the digital TV terminal according to getting, is connect with shielding
The telecommand received.
Digital TV front-end can be packaged in EMM data packet and forbid when sending EMM data packet to Conditional Access Module
Marking keys, Conditional Access Module parsing EMM data packet obtain forbidding being contained in programme information after marking keys transmitting
To digital TV terminal, after digital TV terminal receives programme information, is got from programme information and above-mentioned forbid key mark
Know, set lock state for digital TV terminal, to forbid user's zapping, for digital TV terminal, is locked in setting
When determining state can there are many embodiments, in one embodiment, can only locking zapping function, retain volume adjusting function,
I.e. when receiving remote control device zapping instruction, do not respond, and for other telecommands, such as volume adjustment, still
It is adjusted accordingly according to telecommand, in another embodiment, into after locking mode, for all remote controls received
Instruction does not respond.
Further, after step S20, the playback method of DTV emergent broadcast further includes：
If it includes that marking keys are forbidden in releasing that digital TV terminal, which receives in the data that Conditional Access Module transmits,
Release the lock state, wherein the digital TV front-end, will after detecting that the emergent broadcast program finishes playing
Releasing forbids marking keys to be bundled in EMM data packet being issued to the Conditional Access Module, the Conditional Access Module parsing
After the EMM data packet, what parsing was obtained includes to release to forbid the data of marking keys to be sent to the DTV whole
End.
Digital TV front-end forbids marking keys to be bundled to releasing after detecting that emergent broadcast program finishes playing
In EMM data packet and by the Conditional Access Module of digital data transmission to digital TV terminal, Conditional Access Module receives EMM
The mark for releasing and forbidding key is parsed after data, forbids marking keys to pass by CI agreement and CAM proprietary protocol releasing
Defeated to arrive digital TV terminal, digital TV terminal forbids marking keys to restore keypress function, digital TV terminal root according to releasing
The program of last broadcasting is switched to according to the programme information of preservation.
The playback method for the DTV emergent broadcast that the present embodiment proposes first is protected before playing emergent broadcast program
Deposit the programme information of currently playing TV programme, can be switched back into time after finishing playing in order to emergent broadcast program user it
Before the program watched, the viewing of user is not impacted, also, while playing emergent broadcast program, into locking mould
Block formula forbids user's switching channels, to be switched during preventing emergent broadcast program from playing, and user is caused to be unable to timely learning
Public Crisis situation and emergency measure.
The present invention also proposes a kind of digital TV terminal.
It is the functional block diagram of digital TV terminal first embodiment of the present invention referring to shown in Fig. 3.
In this embodiment, which includes：
Data obtaining module 10, for receiving the emergent broadcast program of Conditional Access Module Conditional Access Module transmission
When programme information, program identification and program frequencies are obtained from the programme information, wherein the Conditional Access Module receives
When what digital TV front-end issued includes the EMM data packet of the programme information of emergent broadcast program, the EMM data packet is parsed
And the programme information of the emergent broadcast program is obtained, and the programme information is transmitted to the digital TV terminal.
Conditional Access Module (Conditional Access Module), also referred to as Conditional Access Module, it is a kind of number
Video Conditional Access Module is the equipment of connection a digital television and outside source, can be with digital TV front-end system
It is communicated between system.The digital signal of compression can be changed into television content by it, and be shown on digital TV terminal.
Conditional Access Module and smart card are used cooperatively, for not having for the digital TV integrated machine of set-top box, condition receiving
Block is used cooperatively in the form of CAM card with smart card, and insertion has the digital TV terminal of CI interface, makes the user do not need set-top box
It can directly watch ordered pay-TV content, CAM is stuck in when sending EMM data packet to television terminal, is based on
CI standard agreement and CAM proprietary protocol are sent；For the DTV for using set-top box, Conditional Access Module setting
It in set-top box, also needs to be used cooperatively with smart card, the main authorization of DTV is awarded by smart card at present
Power, user must obtain authorization by exclusive smart card can receive decoded signal, and service provider also can
The enough information for receiving user in this way, including user's name in an account book, address, smart card numbers and the expense for watching DTV
Etc. information.
An emergency situation is encountered when needing to play emergent broadcast, and digital television front-end system is in the emergency for being ready to need to play
After programming, such as the packings such as the video information of emergent broadcast, audio-frequency information and caption information are obtained into emergent broadcast section
Purpose TS flows (Transport Stream, transport stream), and program TS flow data is modulated on certain frequency, which can
By user setting, can be the frequency for being specifically exclusively used in transmission emergent broadcast program, in this way, the emergent broadcast program is independent
Specific frequency is occupied, it, in other examples, can be by multiplexer by the section of emergent broadcast program without using multiplexer
TS stream is formed after mesh stream and other program stream multiplexings, and is modulated in assigned frequency.Then, it is determined that emergent broadcast program
Program identification, the programs information packages such as the program identification of emergent broadcast program played and above-mentioned program frequencies will be needed to arrive
Conditional Access Module, condition reception are issued in EMM (Entitled Manage Message, Entitlement Management Message) data packet
After module receives the EMM data packet of digital TV front-end transmission, after which is decrypted, described in parsing
EMM data packet gets the programme information of emergent broadcast program, and the programme information that will include program identification and program frequencies
The letter of digital TV terminal is transmitted to based on CI (common interface, common interface) standard agreement and CAM proprietary protocol
Breath obtains module 10, and data obtaining module 10 obtains program identification and program frequencies from the programme information, wherein CAM is private
There is agreement to be specified by the manufacturer of offer Conditional Access Module, above-mentioned program identification include network_id (network identity),
Original_network_id (original network identification), transport_stream_id (transport stream identification) or service_
Id (service identification) etc. is determined for the program identification of unique program.
It should be noted that the emergent broadcast program for needing to play out may have more for digital TV front-end
It is a, therefore, when transmitting emergent broadcast program, according to the priority tag in emergent broadcast programme information, first by priority
The program identification of highest emergent broadcast program carries out packing transmission, and the emergent broadcast program to highest priority finishes playing it
Afterwards, then the emergent broadcast program that takes second place of transmission priority, alternatively, in other examples, by multiple emergency for needing to play
Broadcasting multiplex is including the EMM number of the program identification of emergent broadcast program to Conditional Access Module transmission into same TS stream
According to when, can successively be transmitted according to the sequence of priority from high to low.
It, can be to when handling smart card it is understood that user needs to handle smart card when using DTV
Digital television service quotient provides user information, including user's name in an account book, address etc., in this way, digital TV front-end be stored with including
There are the user informations such as station address, therefore, digital TV front-end can basis when issuing EMM data packet to Conditional Access Module
Station address in above-mentioned user information selects some region of user to send, or stores into database all
The corresponding user of user information sends, in this way, emergent broadcast only can be sent to the digital cable customers of relative region
Program, and other incoherent areas, the then transmission without emergent broadcast program realize the orientation hair of emergent broadcast program
It send, for digital TV front-end, this mode is convenient for the dispensing and management of emergent broadcast.
Program playing module 20, for answering described in being obtained in the program frequencies according to the program identification got
The program stream suddenly broadcasted parses and plays the program stream of the emergent broadcast.
The program identification and the program frequencies where program that data obtaining module 10 gets above-mentioned emergent broadcast program, section
Mesh playing module 20 obtains the section of emergent broadcast according to the corresponding specific identifier of emergent broadcast program from above-mentioned program frequencies
Mesh stream parses and plays the program stream got, in one embodiment program playing module 20, is also used to from the program identification
The middle transport stream identification symbol for obtaining the emergent broadcast program, and obtain in the program frequencies with the transport stream identification
The program stream of symbol.
In other embodiments, the available program stream information with task identifier or event ID etc., or
The specific identifier for identifying emergent broadcast program is added in person front end in TS stream, and the specific identifier is packaged in EMM
Conditional Access Module is sent in data packet, digital TV terminal is obtained in above-mentioned program frequencies with the specific identifier
Program stream.
Further, which further includes with lower module：
Information feedback module, for after obtaining program identification and program frequencies in the programme information, to the item
Part receiving module sends the notification information for being properly received emergent broadcast, so that the Conditional Access Module is according to the notification information
The notification information is fed back to the digital TV front-end.
For the interactive set-top box of the CAM card of digital TV integrated machine or DTV, condition receiving
Block can carry out two-way communication with digital TV front-end, therefore, section obtained from the programme information in digital TV terminal
Target is known with after program frequencies, and the notice that information feedback module can will be properly received emergent broadcast by Conditional Access Module is believed
Breath feeds back to digital TV front-end, and the notification information carries the address information of user, and digital TV front-end can basis
The notification information received successfully launches the statistics in region to emergent broadcast, can identify the area for the emergent broadcast that fails
Domain, and emergent broadcast is carried out using other modes for the region of these emergent broadcasts that fail.
The present embodiment propose digital TV terminal, an emergency situation is encountered need to play emergent broadcast program when, number
Television headend will need the identification information of the emergency program played to be bundled in Entitlement Management Message EMM data packet, be transferred to item
Part receiving module Conditional Access Module, Conditional Access Module get emergent broadcast after parsing to the EMM data received
The programme information of program, and the programme information is sent to digital TV terminal, digital TV terminal obtains in programme information
The program identification and program frequencies for including, and emergent broadcast is obtained in the program frequencies according to the program identification got
Program stream and play emergent broadcast program, in this way, no matter digital TV terminal it is currently playing be what program, can all switch
It is played out to emergent broadcast program, allows the user to receive emergent broadcast program in time.
Referring to shown in Fig. 4, the first embodiment based on digital TV terminal of the present invention proposes digital TV terminal of the present invention
Second embodiment.In the present embodiment, which further includes：
Information storage module 30 for obtaining the programme information of current playing program, and saves the programme information.
Program playing module 20 is also used to after the emergent broadcast program finishes playing, and the DTV is whole
End switches to the corresponding TV programme of the programme information of preservation.
Before the program stream for playing emergent broadcast, information storage module 30 first obtains the currently playing section of digital TV terminal
Purpose programme information, such as channel information, program stream identification etc., and the programme information got is stored, in emergent broadcast program
After finishing playing, the corresponding TV programme of programme information can be switched to, do not influence the viewing of user.
Further, data obtaining module 10 are also used to obtain from the programme information and forbid marking keys；
The digital TV terminal further includes：
State switching module, for forbidding marking keys to set the digital TV terminal to according to getting
Lock state, to shield the telecommand received.
Digital TV front-end can be packaged in EMM data packet and forbid when sending EMM data packet to Conditional Access Module
Marking keys, Conditional Access Module parsing EMM data packet obtain forbidding being contained in programme information after marking keys transmitting
To digital TV terminal, after data obtaining module 10 receives programme information, is got from programme information and above-mentioned forbid key
Mark, digital TV terminal is set lock state by state switching module, to forbid user's zapping, for digital TV terminal
For, it can be there are many embodiment, in one embodiment when lock state is arranged, state switching module can be changed only in locking
Platform function retains volume adjusting function and does not respond that is, when receiving remote control device zapping instruction, and for other distant
Control instruction, such as volume adjustment, are adjusted accordingly still according to telecommand, in another embodiment, into locking mould
After formula, all telecommands received are not responded.
Further, state switching module, if being also used to receive in the data of Conditional Access Module transmission includes solution
Except marking keys are forbidden, then the lock state is released, wherein the digital TV front-end is detecting the emergent broadcast section
After mesh finishes playing, forbids marking keys to be bundled in EMM data packet releasing and be issued to the Conditional Access Module, it is described
After Conditional Access Module parses the EMM data packet, what parsing was obtained includes to release that the data of marking keys is forbidden to send
To the digital TV terminal.
Digital TV front-end forbids marking keys to be bundled to releasing after detecting that emergent broadcast program finishes playing
In EMM data packet and by the Conditional Access Module of digital data transmission to digital TV terminal, Conditional Access Module receives EMM
The mark for releasing and forbidding key is parsed after data, forbids marking keys to pass by CI agreement and CAM proprietary protocol releasing
Defeated to arrive digital TV terminal, state switching module forbids marking keys to unlock state according to releasing, restores keypress function.
The digital TV terminal that the present embodiment proposes first saves currently playing TV before playing emergent broadcast program
The programme information of program can switch back into the program that user watches before in time after finishing playing in order to emergent broadcast program,
The viewing of user is not impacted, also, while playing emergent broadcast program, into locking module formula, forbids user
Switching channels to be switched during preventing emergent broadcast program from playing, and cause user to be unable to timely learning Public Crisis situation
And emergency measure.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of playback method of DTV emergent broadcast, which is characterized in that the broadcasting side of the DTV emergent broadcast
Method includes：
When digital TV terminal receives the programme information of the emergent broadcast program of Conditional Access Module transmission, from the program
Program identification and program frequencies are obtained in information, wherein the Conditional Access Module receives the packet that digital TV front-end issues
When the EMM data packet of the programme information containing emergent broadcast program, parses the EMM data packet and obtain the emergent broadcast section
Purpose programme information, and the programme information is transmitted to the digital TV terminal；
The digital TV terminal is after obtaining program identification and program frequencies in the programme information, to the condition receiving
Block sends the notification information for being properly received emergent broadcast, for the Conditional Access Module according to the notification information to the number
Word television headend feeds back the notification information；
The digital TV terminal obtains the emergent broadcast according to the program identification got in the program frequencies
Program stream, parse and play the program stream of the emergent broadcast；
Wherein, when it is multiple for needing the emergent broadcast program that plays out, the digital TV terminal is from the emergent broadcast
Obtain priority tag in the programme information of program, the digital TV terminal according to the priority tag got successively
Play multiple emergent broadcast programs；
The digital TV front-end when issuing EMM data packet to the Conditional Access Module according to the user in user information
Location selects specific user to send, i.e., only sends the emergent broadcast program to the digital cable customers of relative region.
2. the playback method of DTV emergent broadcast according to claim 1, which is characterized in that the DTV is whole
End includes the step of obtaining the program stream of the emergent broadcast in the program frequencies according to the identification information received：
The digital TV terminal obtains the transport stream identification symbol of the emergent broadcast program from the program identification, and in institute
State the program stream for obtaining in program frequencies and there is transport stream identification symbol.
3. the playback method of DTV emergent broadcast according to claim 1, which is characterized in that the DTV is whole
End obtains the program stream of the emergent broadcast according to the identification information received in the program frequencies, parses and plays
Before the step of program stream of the emergent broadcast, the playback method of the DTV emergent broadcast further includes：
The digital TV terminal obtains the programme information of current playing program, and saves the programme information；
After described the step of parsing and playing the program stream of the emergent broadcast, the broadcasting side of the DTV emergent broadcast
Method further includes step：
After the emergent broadcast program finishes playing, the digital TV terminal is switched to the programme information of preservation
Corresponding TV programme.
4. the playback method of DTV emergent broadcast according to claim 3, which is characterized in that described from the program
After the step of obtaining program identification and program frequencies in information, the playback method of the DTV emergent broadcast further includes step
Suddenly：
The digital TV terminal is obtained from the programme information forbids marking keys；
After described the step of parsing and playing the program stream of the emergent broadcast, the broadcasting side of the DTV emergent broadcast
Method further includes：
Forbid marking keys to set lock state for the digital TV terminal according to getting, is received with shielding
Telecommand.
5. the playback method of DTV emergent broadcast according to claim 4, which is characterized in that described in the emergency
After broadcast program finishes playing, the digital TV terminal is switched to the corresponding TV programme of the programme information of preservation
The step of after, the playback method of the DTV emergent broadcast further includes：
If it includes that marking keys are forbidden in releasing that digital TV terminal, which receives in the data that Conditional Access Module transmits, release
The lock state, wherein the digital TV front-end will release after detecting that the emergent broadcast program finishes playing
Forbid marking keys to be bundled in EMM data packet and be issued to the Conditional Access Module, described in the Conditional Access Module parsing
After EMM data packet, by parsing obtain include release forbid the data of marking keys to be sent to the digital TV terminal.
6. a kind of digital TV terminal, which is characterized in that the digital TV terminal includes：
Data obtaining module, the program letter of the emergent broadcast program for receiving the transmission of Conditional Access Module Conditional Access Module
When breath, program identification and program frequencies are obtained from the programme information, wherein the Conditional Access Module receives digital electricity
Depending on front end issue when including the EMM data packet of programme information of emergent broadcast program, parse the EMM data packet and obtain
The programme information of the emergent broadcast program is taken, and the programme information is transmitted to the digital TV terminal；
Program playing module, for obtaining the emergent broadcast in the program frequencies according to the program identification got
Program stream, parse and play the program stream of the emergent broadcast；
Information feedback module, after obtaining program identification and program frequencies in the programme information, to the condition reception
Module sends the notification information for being properly received emergent broadcast, for the Conditional Access Module according to the notification information to described
Digital TV front-end feeds back the notification information；
Wherein, when it is multiple for needing the emergent broadcast program that plays out, the digital TV terminal is from the emergent broadcast
Obtain priority tag in the programme information of program, the digital TV terminal according to the priority tag got successively
Play multiple emergent broadcast programs；
The digital TV front-end when issuing EMM data packet to the Conditional Access Module according to the user in user information
Location selects specific user to send, i.e., only sends the emergent broadcast program to the digital cable customers of relative region.
7. digital TV terminal according to claim 6, which is characterized in that the program playing module is also used to from institute
The transport stream identification symbol for obtaining the emergent broadcast program in program identification is stated, and is obtained in the program frequencies with described
The program stream of transport stream identification symbol.
8. digital TV terminal according to claim 6, which is characterized in that the digital TV terminal further includes：
Information storage module for obtaining the programme information of current playing program, and saves the programme information；
The program playing module is also used to after the emergent broadcast program finishes playing, by the digital TV terminal
Switch to the corresponding TV programme of the programme information of preservation.
9. digital TV terminal according to claim 8, which is characterized in that the data obtaining module is also used to from institute
It states to obtain in programme information and forbids marking keys；
State switching module, for forbidding marking keys to be set as locking by the digital TV terminal according to getting
State, to shield the telecommand received.
10. digital TV terminal according to claim 9, which is characterized in that the state switching module, if being also used to connect
Receiving in the data of Conditional Access Module transmission includes that marking keys are forbidden in releasing, then releases the lock state, wherein institute
Digital TV front-end is stated after detecting that the emergent broadcast program finishes playing, forbids marking keys to be bundled to releasing
The Conditional Access Module is issued in EMM data packet will parse after the Conditional Access Module parses the EMM data packet
What is obtained includes to release that the data of marking keys is forbidden to be sent to the digital TV terminal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511030194.0A CN105471533B (en) | 2015-12-31 | 2015-12-31 | The playback method and digital TV terminal of DTV emergent broadcast |
| PCT/CN2016/084473 WO2017113594A1 (en) | 2015-12-31 | 2016-06-02 | Emergency broadcast playing method for digital television, and digital television terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511030194.0A CN105471533B (en) | 2015-12-31 | 2015-12-31 | The playback method and digital TV terminal of DTV emergent broadcast |
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| CN105471533A CN105471533A (en) | 2016-04-06 |
| CN105471533B true CN105471533B (en) | 2018-11-16 |
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| WO (1) | WO2017113594A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105471533B (en) * | 2015-12-31 | 2018-11-16 | 深圳Tcl数字技术有限公司 | The playback method and digital TV terminal of DTV emergent broadcast |
| CN107466018B (en) * | 2016-06-02 | 2021-08-24 | 海能达通信股份有限公司 | Data transmission method of terminal equipment and terminal equipment |
| CN106817589A (en) * | 2016-12-21 | 2017-06-09 | 伟乐视讯科技股份有限公司 | The front end switching system and method for a kind of TV programme |
| CN108494515A (en) * | 2018-03-12 | 2018-09-04 | 北京数码视讯科技股份有限公司 | Response method, device, emergency broadcase system and the set-top box of emergent broadcast |
| CN111404636B (en) * | 2020-03-10 | 2022-03-04 | 珠海格力电器股份有限公司 | Communication method, device and system capable of reducing bus interference |
| CN112235236B (en) * | 2020-08-28 | 2022-08-30 | 福建新大陆通信科技股份有限公司 | Emergency broadcast data analysis method |
| 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 |
| CN112688749B (en) * | 2020-12-04 | 2023-06-30 | 福建新大陆通信科技股份有限公司 | Emergency broadcast IP microphone broadcasting control method |
| CN114449317B (en) * | 2021-12-27 | 2023-06-30 | 福建新大陆通信科技股份有限公司 | Emergency broadcasting method for digital television |
| CN116488757A (en) * | 2023-05-12 | 2023-07-25 | 北京悦视科技有限公司 | Urban emergency broadcast media adaptation method and system |
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| WO2017113594A1 (en) | 2017-07-06 |
| CN105471533A (en) | 2016-04-06 |
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