CN114449317A - Digital television emergency broadcasting method - Google Patents
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- CN114449317A CN114449317A CN202111636076.XA CN202111636076A CN114449317A CN 114449317 A CN114449317 A CN 114449317A CN 202111636076 A CN202111636076 A CN 202111636076A CN 114449317 A CN114449317 A CN 114449317A
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
- H04N21/26258—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists for generating a list of items to be played back in a given order, e.g. playlist, or scheduling item distribution according to such list
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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
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
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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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
- H04N21/64322—IP
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Databases & Information Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
The invention provides a digital television emergency broadcasting method in the technical field of emergency broadcasting, which comprises the following steps: step S10, after the digital television is started, acquiring EPG information and a television sound source, sending the EPG information and the television sound source to an emergency broadcast terminal for playing, and sending the EPG information to a broadcast adapter; step S20, the broadcasting adapter analyzes the received EPG information to obtain an electronic program list and monitors the emergency broadcasting platform; step S30, when the broadcast adapter monitors that the emergency broadcast platform has an emergency broadcast instruction, the electronic program list is sent to the emergency broadcast platform; step S40, the emergency broadcast platform arranges the electronic program list based on the emergency broadcast instruction to generate an emergency program list and sends the emergency program list to the emergency broadcast terminal through the broadcast adapter; and step S50, the emergency broadcast terminal controls the playing of the television sound source based on the received emergency program list. The invention has the advantages that: the compatibility and the reliability of emergency broadcasting are greatly improved.
Description
Technical Field
The invention relates to the technical field of emergency broadcasting, in particular to an emergency broadcasting method for a digital television.
Background
The digital television transmission overlay network in the technical field of emergency broadcasting, including a cable digital television (DVBC) and a terrestrial Digital Television (DTMB), is an important transmission overlay network; the digital television transmission coverage network has relatively mature and abundant program sources, and is suitable for being used as a daily broadcast sound source of an emergency broadcast terminal (an emergency broadcast loud speaker).
The program source of the digital television transmission coverage network is sent to an emergency broadcast terminal for emergency broadcast, namely, the emergency broadcast terminal is accessed to the digital television transmission coverage network, new and old systems are required to be compatible, the problems of multiplexing of original broadcast data, receiving and analyzing of electronic program lists, playing and arranging of daily television programs and the like are involved, namely, the new and old data are output in a unified mode, a more convenient and unified broadcast mode is provided, and no corresponding solution is provided at present for the problems.
Therefore, how to provide a digital television emergency broadcasting method to improve the compatibility and reliability of emergency broadcasting becomes a technical problem to be solved urgently.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a digital television emergency broadcasting method, which can improve the compatibility and reliability of emergency broadcasting.
The invention is realized by the following steps: a digital television emergency broadcasting method comprises the following steps:
step S10, after the digital television is started, acquiring EPG information and a television sound source, sending the EPG information and the television sound source to an emergency broadcast terminal for playing, and sending the EPG information to a broadcast adapter;
step S20, the broadcast adapter analyzes the received EPG information to obtain an electronic program list, and monitors the emergency broadcast platform to generate a monitoring result;
step S30, the broadcast adapter sends the electronic program list to the emergency broadcast platform based on the monitoring result;
step S40, arranging an electronic program list by the emergency broadcast platform based on the emergency broadcast instruction to generate an emergency program list, and sending the emergency program list to an emergency broadcast terminal through a broadcast adapter;
and step S50, the emergency broadcasting terminal controls the playing of the television sound source based on the received emergency program list.
Further, the step S10 is specifically:
after a digital television is started, acquiring EPG information and a television sound source in real time, and sending the EPG information and the television sound source to an emergency broadcast terminal through an ASI (asynchronous serial interface) or an IP/TS (Internet protocol/transport stream) interface, wherein the emergency broadcast terminal controls the playing of the television sound source based on the received EPG information;
and the digital television synchronously transmits the EPG information to a broadcast adapter through an ASI interface or an IP/TS interface.
Further, in the step S10, the EPG information includes a service description table, a service group association table, an event information table, a time and date table, and a time offset table;
the service description table, the service group association table, the event information table, the time and date table and the time offset table all contain service IDs for association indexes of data.
Further, the step S20 specifically includes:
step S21, the broadcasting adapter receives the EPG information, judges whether a multiplexer exists, if not, the broadcasting adapter analyzes the EPG information by itself to obtain an electronic program list, and the step S22 is proceeded; if yes, converting the EPG information into TS format data, inputting the TS format data into a multiplexer, analyzing the TS format data to obtain an electronic program list, and entering the step S22;
and step S22, the broadcast adapter monitors whether the emergency broadcast platform has an emergency broadcast instruction or not, and generates a monitoring result.
Further, in step S20, the electronic program guide at least includes a service ID, an event ID, a network ID, a transport stream ID, a TS packet PID, a data stream type, a program name, program details, an EPG name, a day, a start time, an end time, a program clock flag, and a play status.
Further, the step S30 is specifically:
and when the monitoring result is that an emergency broadcast instruction is monitored, the broadcast adapter sends the electronic program list to an emergency broadcast platform through an IP protocol.
Further, the step S40 specifically includes:
step S41, the emergency broadcast platform arranges the electronic program list based on the emergency broadcast instruction to generate an emergency program list;
step S42, after the emergency broadcast platform carries out time calibration on the broadcast adapter, the emergency program list is sent to the broadcast adapter;
and step S43, the broadcast adapter sends the received emergency program list to an emergency broadcast terminal.
Further, in step S40, the emergency program list at least includes a program list, a program playing sequence, a program playing time, and a program frequency point.
Further, the step S50 is specifically:
the emergency broadcasting terminal analyzes the received emergency program list, judges whether the current frequency point is the program frequency point, and controls the playing of a television sound source based on the program list, the program playing sequence and the program playing time if the current frequency point is the program frequency point; if not, after the current frequency point is switched to the program frequency point, the playing of the television sound source is controlled based on the program list, the program playing sequence and the program playing time, and the original frequency point is switched back after the playing is finished.
The invention has the advantages that:
the method comprises the steps that EPG information is sent to a broadcasting adapter through a digital television, the broadcasting adapter analyzes the EPG information to obtain an electronic program list, the electronic program list is sent to an emergency broadcasting platform when an emergency broadcasting instruction exists on the emergency broadcasting platform, the emergency broadcasting platform arranges the electronic program list based on the emergency broadcasting instruction to generate an emergency program list, the emergency program list is sent to an emergency broadcasting terminal, and the emergency broadcasting terminal controls the playing of a television sound source based on the received emergency program list; when the emergency broadcasting terminal does not receive the emergency program list, controlling the playing of the television sound source based on the EPG information sent by the digital television; the emergency broadcast terminal is connected to the transmission overlay network of the digital television, the playing of the television sound source can be controlled directly based on EPG information, the playing of the television sound source can also be controlled based on an emergency program list, and the emergency broadcast platform is arranged in a unified mode, so that errors caused by program information addition artificially can be avoided, the broadcast time interval can be controlled accurately, and finally, the compatibility and the reliability of emergency broadcast are greatly improved.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
Fig. 1 is a flow chart of an emergency broadcasting method of digital television according to the present invention.
Fig. 2 is a flow chart of an emergency broadcasting method of digital television according to the present invention.
Detailed Description
The technical scheme in the embodiment of the application has the following general idea: the method comprises the steps that EPG information sent by a digital television is analyzed through a broadcast adapter to obtain an electronic program list and the electronic program list is sent to an emergency broadcast platform, the emergency broadcast platform arranges the electronic program list based on an emergency broadcast instruction to generate an emergency program list and sends the emergency program list to an emergency broadcast terminal, and the emergency broadcast terminal controls the playing of a television sound source based on the emergency program list; when the emergency broadcasting terminal does not receive the emergency program list, controlling the playing of the television sound source based on the EPG information; the emergency broadcast terminal is accessed into a digital television transmission overlay network, the playing of a television sound source can be controlled based on EPG information or an emergency program list, errors caused by manual operation are avoided through unified arrangement of an emergency broadcast platform, and the broadcast time interval can be accurately controlled, so that the compatibility and reliability of emergency broadcast are improved.
Referring to fig. 1 to 2, a preferred embodiment of a digital television emergency broadcasting method according to the present invention includes the following steps:
step S10, after the digital television is started, acquiring EPG (electronic Program guide) information and a television sound source, sending the EPG information and the television sound source to an emergency broadcasting terminal for playing, and sending the EPG information to a broadcasting adapter;
step S20, the broadcast adapter analyzes the received EPG information to obtain an electronic program list, and monitors the emergency broadcast platform to generate a monitoring result;
step S30, the broadcast adapter sends the electronic program list to the emergency broadcast platform based on the monitoring result;
step S40, arranging an electronic program list by the emergency broadcast platform based on the emergency broadcast instruction to generate an emergency program list, and sending the emergency program list to an emergency broadcast terminal through a broadcast adapter; the emergency program list is transmitted through a TS (transport stream) code stream;
and step S50, the emergency broadcasting terminal controls the playing of the television sound source based on the received emergency program list, namely, the emergency broadcasting terminal carries out broadcasting switching operation.
The method is based on GDJ 086 + 2018 cable digital television emergency broadcast technical specification, GDJ 087 + 2018 ground digital television emergency broadcast technical specification and GDJ 089 + 2018 emergency broadcast large-speaker system technical specification, and is used for adapting the digital television and the emergency broadcast terminal, multiplexing the original television sound source (television content) of the digital television, providing a calling interface of an emergency broadcast platform, obtaining an electronic program list for rescheduling, and outputting the scheduled emergency program list to the corresponding emergency broadcast terminal (large-speaker system).
The step S10 specifically includes:
after a digital television is started, acquiring EPG information and a television sound source in real time, and sending the EPG information and the television sound source to an emergency broadcast terminal through an ASI (asynchronous serial interface) or an IP/TS (Internet protocol/transport stream) interface, wherein the emergency broadcast terminal controls the playing of the television sound source based on the received EPG information;
and the digital television synchronously transmits the EPG information to a broadcast adapter through an ASI interface or an IP/TS interface.
In step S10, the EPG information includes a service description table (STD), a service group association table (BAT), an Event Information Table (EIT), a Time and Date Table (TDT), and a Time Offset Table (TOT);
the service description table, the service group association table, the event information table, the time and date table and the time offset table all contain service IDs for association indexes of data.
The step S20 specifically includes:
step S21, the broadcasting adapter receives the EPG information, judges whether a multiplexer exists, if not, the broadcasting adapter analyzes the EPG information by itself to obtain an electronic program list, and the step S22 is proceeded; if yes, converting the EPG information into TS format data, inputting the TS format data into a multiplexer, analyzing the TS format data to obtain an electronic program list, and entering the step S22;
the electronic program list can be multiplexed through an internal part (broadcasting adapter) or can be multiplexed through an external part (multiplexer); the data processing performance of the multiplexer is far stronger than that of a broadcast adapter, so that when the multiplexer exists, the multiplexer is preferentially used for analyzing the electronic program list;
because the multiplexer is expensive, the front end of the digital television at county level often has no multiplexer, the number of the television programs output by the county level encoder is relatively small, generally 1-2 television programs, plus the retransmitted program, the number of the channels is within 5, the processing capacity of the broadcast adapter is sufficient, if the program is input at city level or provincial level, the processing capacity of the broadcast adapter is insufficient, and the multiplexer at G level is needed for multiplexing and transmitting.
And step S22, the broadcast adapter monitors whether the emergency broadcast platform has an emergency broadcast instruction or not, and generates a monitoring result.
In step S20, the electronic program guide at least includes a service ID (serviceid), an event ID, a network ID (netid), a transport stream ID (tsid), a TS packet PID (program _ PID), a stream type (stream _ type), a program name (progrmname), program detail information (EpgInfo), an EPG name, a day, a date, a start time (StartTime), an end time (EndTime), a program clock flag (PCR _ PID), and a play status; each event ID corresponds to an event, for example, 19: 00-20: 00.
The step S30 specifically includes:
and when the monitoring result is that an emergency broadcast instruction is monitored, the broadcast adapter sends the electronic program list to an emergency broadcast platform through an IP protocol.
The step S40 specifically includes:
step S41, arranging the electronic program list by the emergency broadcast platform based on the emergency broadcast instruction to generate an emergency program list;
step S42, after the emergency broadcast platform carries out time calibration on the broadcast adapter, the emergency program list is sent to the broadcast adapter;
and step S43, the broadcast adapter sends the received emergency program list to an emergency broadcast terminal.
In step S40, the emergency program list at least includes a program list, a program playing sequence, a program playing time, and a program frequency point.
The step S50 specifically includes:
the emergency broadcasting terminal analyzes the received emergency program list, judges whether the current frequency point is the program frequency point, and controls the playing of a television sound source based on the program list, the program playing sequence and the program playing time if the current frequency point is the program frequency point; if not, after the current frequency point is switched to the program frequency point, the playing of the television sound source is controlled based on the program list, the program playing sequence and the program playing time, and the original frequency point is switched back after the playing is finished.
And the broadcasting adapter and the emergency broadcasting terminal monitor the EPG information of the digital television in real time, and when the EPG information changes, the EPG information is acquired again and the broadcasting program is adjusted.
In summary, the invention has the advantages that:
the method comprises the steps that EPG information is sent to a broadcasting adapter through a digital television, the broadcasting adapter analyzes the EPG information to obtain an electronic program list, the electronic program list is sent to an emergency broadcasting platform when an emergency broadcasting instruction exists on the emergency broadcasting platform, the emergency broadcasting platform arranges the electronic program list based on the emergency broadcasting instruction to generate an emergency program list, the emergency program list is sent to an emergency broadcasting terminal, and the emergency broadcasting terminal controls the playing of a television sound source based on the received emergency program list; when the emergency broadcasting terminal does not receive the emergency program list, controlling the playing of the television sound source based on the EPG information sent by the digital television; the emergency broadcast terminal is connected to the transmission overlay network of the digital television, the playing of the television sound source can be controlled directly based on EPG information, the playing of the television sound source can also be controlled based on an emergency program list, and the emergency broadcast platform is arranged in a unified mode, so that errors caused by program information addition artificially can be avoided, the broadcast time interval can be controlled accurately, and finally, the compatibility and the reliability of emergency broadcast are greatly improved.
Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.
Claims (9)
1. A digital television emergency broadcasting method is characterized in that: the method comprises the following steps:
step S10, after the digital television is started, acquiring EPG information and a television sound source, sending the EPG information and the television sound source to an emergency broadcast terminal for playing, and sending the EPG information to a broadcast adapter;
step S20, the broadcast adapter analyzes the received EPG information to obtain an electronic program list, and monitors the emergency broadcast platform to generate a monitoring result;
step S30, the broadcast adapter sends the electronic program list to the emergency broadcast platform based on the monitoring result;
step S40, arranging an electronic program list by the emergency broadcast platform based on the emergency broadcast instruction to generate an emergency program list, and sending the emergency program list to an emergency broadcast terminal through a broadcast adapter;
and step S50, the emergency broadcasting terminal controls the playing of the television sound source based on the received emergency program list.
2. The emergency broadcasting method of digital tv as claimed in claim 1, wherein: the step S10 specifically includes:
after a digital television is started, acquiring EPG information and a television sound source in real time, and sending the EPG information and the television sound source to an emergency broadcast terminal through an ASI (asynchronous serial interface) or an IP/TS (Internet protocol/transport stream) interface, wherein the emergency broadcast terminal controls the playing of the television sound source based on the received EPG information;
and the digital television synchronously transmits the EPG information to a broadcast adapter through an ASI interface or an IP/TS interface.
3. The emergency broadcasting method of digital tv as claimed in claim 1, wherein: in step S10, the EPG information includes a service description table, a service group association table, an event information table, a time and date table, and a time offset table;
the service description table, the service group association table, the event information table, the time and date table and the time offset table all contain service IDs for associated indexes of data.
4. The emergency broadcasting method of digital tv as claimed in claim 1, wherein: the step S20 specifically includes:
step S21, the broadcasting adapter receives the EPG information, judges whether a multiplexer exists, if not, the broadcasting adapter analyzes the EPG information by itself to obtain an electronic program list, and the step S22 is proceeded; if yes, converting the EPG information into data in a TS format, inputting the data into a multiplexer for analysis to obtain an electronic program list, and entering the step S22;
and step S22, the broadcast adapter monitors whether the emergency broadcast platform has an emergency broadcast instruction or not, and generates a monitoring result.
5. The emergency broadcasting method of digital tv as claimed in claim 1, wherein: in step S20, the electronic program guide at least includes a service ID, an event ID, a network ID, a transport stream ID, a TS packet PID, a data stream type, a program name, program detail information, an EPG name, a day, a date, a start time, an end time, a program clock flag, and a play status.
6. The emergency broadcasting method of digital tv as claimed in claim 1, wherein: the step S30 specifically includes:
and when the monitoring result is that an emergency broadcast instruction is monitored, the broadcast adapter sends the electronic program list to an emergency broadcast platform through an IP protocol.
7. The emergency broadcasting method of digital tv as claimed in claim 1, wherein: the step S40 specifically includes:
step S41, the emergency broadcast platform arranges the electronic program list based on the emergency broadcast instruction to generate an emergency program list;
step S42, after the emergency broadcast platform carries out time calibration on the broadcast adapter, the emergency program list is sent to the broadcast adapter;
and step S43, the broadcast adapter sends the received emergency program list to an emergency broadcast terminal.
8. The emergency broadcasting method of digital tv as claimed in claim 1, wherein: in step S40, the emergency program list at least includes a program list, a program playing sequence, a program playing time, and a program frequency point.
9. The emergency broadcasting method of digital tv as claimed in claim 8, wherein: the step S50 specifically includes:
the emergency broadcasting terminal analyzes the received emergency program list, judges whether the current frequency point is the program frequency point, and controls the playing of a television sound source based on the program list, the program playing sequence and the program playing time if the current frequency point is the program frequency point; if not, after the current frequency point is switched to the program frequency point, the playing of the television sound source is controlled based on the program list, the program playing sequence and the program playing time, and the original frequency point is switched back after the playing is finished.
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Cited By (1)
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| CN114449317B (en) | 2023-06-30 |
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