CN114050882A - Network broadcasting system and switching method of working modes of network broadcasting system - Google Patents
Network broadcasting system and switching method of working modes of network broadcasting system Download PDFInfo
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- CN114050882A CN114050882A CN202111274041.6A CN202111274041A CN114050882A CN 114050882 A CN114050882 A CN 114050882A CN 202111274041 A CN202111274041 A CN 202111274041A CN 114050882 A CN114050882 A CN 114050882A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/56—Arrangements characterised by components specially adapted for monitoring, identification or recognition covered by groups H04H60/29-H04H60/54
- H04H60/58—Arrangements characterised by components specially adapted for monitoring, identification or recognition covered by groups H04H60/29-H04H60/54 of audio
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/76—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet
- H04H60/81—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by the transmission system itself
- H04H60/82—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by the transmission system itself the transmission system being the Internet
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
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Abstract
The invention provides a network broadcasting system and a method for switching the working mode of the network broadcasting system, wherein the method comprises the following steps: according to the synchronization request of the audio file of the network broadcast server, acquiring a list file containing the audio file, and synchronizing the list file to the terminal; in a first preset period, determining that the terminal does not receive a first search instruction of the network broadcast server, and switching the terminal to a distribution mode; acquiring a first audio playing request of a pager; according to a target audio file in the first audio playing request, calling the target audio file from the list file in the terminal in the distribution mode for broadcasting; compared with the existing network broadcasting system, the system disclosed by the application enables application scenes of the system to be richer and more flexible through switching of two operation modes, namely a centralized mode and a distributed mode, is higher in risk resistance and stronger in linkage among terminal devices in the system, and can be widely applied to the technical field of network broadcasting systems.
Description
Technical Field
The invention belongs to the technical field of network broadcasting systems, and particularly relates to a network broadcasting system and a method for switching working modes of the network broadcasting system.
Background
The IP network broadcasting system in the prior art usually has the functions of free on-demand, timing playing, paging and the like, but the existing network broadcasting system usually operates in a centralized mode, and the normal operation of the network broadcasting system can only be normally operated by strictly depending on the participation of a server. Once the server in the broadcasting system is abnormal and is disconnected from other terminals, abnormal conditions such as incapability of ordering songs, incapability of executing timing tasks, incapability of passing through a pager and the like occur. In summary, the network broadcasting system in the prior art has the disadvantages of single working mode, poor risk resistance, and poor linkage between each terminal device in the broadcasting system.
Disclosure of Invention
In view of the above, to at least partially solve one of the above technical problems, embodiments of the present invention provide a network broadcast system capable of supporting operation modes of a centralized mode and a distributed mode of a power amplifier terminal, and having a more flexible operation mode, and a method for switching operation modes of the network broadcast system.
In a first aspect, a technical solution of the present application provides a network broadcast system, which includes a network broadcast server, a pager, and a power amplifier terminal; the pager is connected to the network broadcast server through a local area network, and the power amplifier terminal is connected to the network broadcast server through the local area network;
the network broadcast server is used for sending a synchronization request of an audio file and synchronizing a list file containing the audio file to the power amplifier terminal; and sending a second audio play request;
the pager is used for sending a first audio playing request so that the power amplifier terminal broadcasts a target audio file in the first audio playing request;
the power amplifier terminal is used for determining whether a first search instruction of the network broadcast server is received or not in a first preset period;
determining that the first search instruction is not received, switching to a distribution mode, and playing the target audio file according to the first audio playing request;
or, determining that the first search instruction is received, switching to a centralized mode, and playing the target audio file according to the second audio playing request.
In a feasible embodiment of the scheme of the application, the network broadcasting system further comprises a network timer, an audio collector and a fire alarm;
the network timing device is connected to the network broadcast server through a local area network, the audio collector is connected to the network broadcast server through the local area network, and the fire-fighting alarm device is connected to the network broadcast server through the local area network;
the network time corrector is used for sending the calibration time to the terminal; the audio collector is used for collecting an external audio data stream and sending the external audio data stream to the terminal; the fire alarm is used for generating fire alarm information, so that the terminal can call an alarm sound effect file to broadcast.
On the other hand, a technical solution of the present application provides a method for switching a working mode of a network broadcast system, where the method may be applied to the network broadcast system in the first aspect, and the method includes the following steps:
according to a synchronization request of an audio file of a network broadcast server, acquiring a list file containing the audio file, and synchronizing the list file to a terminal;
in a first preset period, determining that the terminal does not receive a first search instruction of the network broadcast server, and switching the terminal to a distribution mode;
acquiring a first audio playing request of a pager;
and calling the target audio file from the list file in the terminal in the distribution mode for broadcasting according to the target audio file in the first audio playing request.
In a possible embodiment of the present disclosure, after the step of synchronizing the list file to the terminal, the switching method further includes the following steps:
in a first preset period, determining that the terminal receives a second search instruction of the network broadcast server, and switching the terminal to a centralized mode;
acquiring a second audio playing request of the network broadcast server;
calling the target audio file from the list file in the terminal in the centralized mode for broadcasting according to the target audio file in the second audio playing request;
or, according to the second audio playing request, the terminal downloads and broadcasts the target audio file.
In a possible embodiment of the present disclosure, after the step of switching the terminal to the distribution mode, the switching method further includes the following steps:
acquiring a second search instruction of the pager;
and displaying the working modes of the terminal in a visual mode according to the second search instruction, wherein the working modes comprise a distribution mode and a concentration mode.
In a possible embodiment of the present disclosure, after the step of switching the terminal to the distribution mode, the switching method further includes the following steps:
acquiring an external audio data stream according to an external audio source playing request initiated by a pager;
and transmitting the external audio data stream to a terminal for broadcasting through multicast.
In a possible embodiment of the present disclosure, after the step of switching the terminal to the distribution mode, the switching method further includes the following steps:
and sending the paging data stream to the terminal for broadcasting through multicast according to the paging instruction and the paging data stream initiated by the pager.
In a possible embodiment of the present disclosure, before the step of retrieving the target audio file from the list file for broadcasting in the terminal in the distribution mode, the switching method further includes the following steps:
acquiring calibration time from a network timer according to a second preset period;
and updating and synchronizing the local time of the terminal according to the calibration time.
In a possible embodiment of the present disclosure, after the step of retrieving the target audio file from the list file for broadcasting in the terminal in the distribution mode, the switching method further includes the following steps:
acquiring fire alarm information, and determining an alarm correlation terminal according to channel configuration information in the fire alarm information;
and calling an alarm sound effect file from the list file of the alarm correlation terminal to broadcast according to the fire alarm information.
In a possible embodiment of the present disclosure, after performing update synchronization on the local time of the terminal, the handover method further includes:
and acquiring timing information, and calling the target audio file for broadcasting according to the timing information and the updated and synchronized local time.
Advantages and benefits of the present invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention:
the technical scheme of the application provides a network broadcasting system supporting two working modes, the system is operated in a centralized mode under the condition that a server is normal, and all terminals can be automatically switched to a distributed mode to operate after the server is abnormally disconnected from the terminals, so that all functions can be normally operated; in the distributed mode, the pager can freely page any terminal, and the terminal can also independently execute an audio playing task on time; compared with the existing network broadcasting system, the system disclosed by the application has the advantages that the application scenes of the system are richer and more flexible, the risk resistance is stronger, and the linkage between each terminal device in the system is stronger through the switching of two operation modes, namely a centralized mode and a distributed mode.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a network broadcasting system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another network broadcasting system according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a network timer according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an audio collector in an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a fire alarm according to an embodiment of the present invention;
FIG. 6 is a flowchart of the steps for song synchronization in an embodiment of the present invention;
FIG. 7 is a flowchart illustrating steps for downloading a timing information file from a network broadcast server to a terminal according to an embodiment of the present invention;
FIG. 8 is a flowchart illustrating steps for switching to a distribution mode according to an embodiment of the present invention;
FIG. 9 is a flowchart illustrating steps of controlling a network speaker to play music in a distributed mode according to an embodiment of the present invention;
FIG. 10 is a flowchart illustrating steps for obtaining a working mode of a network speaker according to an embodiment of the present invention;
FIG. 11 is a flowchart illustrating steps for playing an external sound source in a distributed mode according to an embodiment of the present invention;
FIG. 12 is a flowchart illustrating steps for paging by a pager in a distributed mode in accordance with an embodiment of the present invention;
FIG. 13 is a flowchart illustrating the steps of time calibration in a distributed mode according to an embodiment of the present invention;
FIG. 14 is a flowchart illustrating steps of executing timed playback by a single network speaker in a distributed mode according to an embodiment of the present invention;
FIG. 15 is a flowchart illustrating the steps of triggering a fire alarm in a distributed mode according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. The step numbers in the following embodiments are provided only for convenience of illustration, the order between the steps is not limited at all, and the execution order of each step in the embodiments can be adapted according to the understanding of those skilled in the art.
The network broadcasting system in the prior art usually operates in a centralized mode, the system can normally operate only by strictly depending on a server, and once the server is abnormal and is disconnected from other terminals, abnormal conditions that songs cannot be ordered, a timing task cannot be executed, a network sound box cannot be paged through a pager, an external sound source cannot be played, fire-fighting linkage cannot normally work and the like occur.
In order to solve the foregoing drawbacks in the prior art, in a first aspect, as shown in fig. 1, the present application provides a network broadcast system, where the network broadcast system includes a network broadcast server, a pager, and a power amplifier terminal, where the pager is connected to the network broadcast server through a local area network, and the power amplifier terminal is connected to the network broadcast server through the local area network.
The network broadcast server is used for sending a synchronization request of the audio files and synchronizing the list files containing the audio files to the power amplifier terminal; and sending a second audio play request;
the pager is used for sending a first audio playing request so that the power amplifier terminal broadcasts a target audio file in the first audio playing request;
the power amplifier terminal is used for determining whether a first search instruction of the network broadcast server is received or not in a first preset period; determining that the first search instruction is not received, switching to a distribution mode, and playing the target audio file according to the first audio playing request; or determining that the first search instruction is received, switching to the centralized mode, and playing the target audio file according to the second audio playing request.
In the embodiment, the network broadcasting system has two working modes, the system is operated in a centralized mode under the normal condition of the server, all commands and data streams of the terminal are forwarded through the server, and song list information, song files, related timing information, fire-fighting linkage configuration and the like need to be synchronized to the power amplifier terminal.
When the server is disconnected from the terminal due to abnormality, the terminal can automatically switch to a distributed mode to operate, the function of searching and displaying the terminal of the server is replaced by the pager, and the song file, the timing information and the fire-fighting linkage configuration are synchronously downloaded to the local of the power amplification terminal. The pager can directly page any network sound box and directly multicast and send data streams to the network sound box.
In some optional embodiments, as shown in fig. 2, the network broadcast system may further include a network timer 204, an audio collector 205, and a fire alarm 206; the network timing device 204 is connected to the network broadcast server 201 through a local area network, and the audio collector 205 is connected to the network broadcast server 201 through the local area network.
Specifically, the network timer 204 in the system is configured to send the calibration time to the terminal; the audio collector 205 is used for collecting an external audio data stream and sending the external audio data stream to the power amplifier terminal 203; and the fire alarm 206 is used for generating fire alarm information, so that the power amplifier terminal 203 calls the alarm sound effect file to broadcast. Exemplarily, the power amplifier terminal 203, i.e., the network speaker, in the system according to an embodiment may also execute a timing point according to the downloaded timing information; the system can also send the data stream of the external sound source to the network sound box directly by the audio collector 205 for playing; the fire alarm 206 can also directly inform the sub-area of the trigger channel linkage to play the alarm sound effect according to the downloaded configuration information; it is understood that the power amplifier terminal 203 in the system can also broadcast the voice content recorded by the user through the pager 202.
In some optional embodiments, the network broadcast server in the system adopts an Intel quad-core CPU, runs a memory by 4G and a storage space by 128G, and runs a windows system; the pager, the network sound box, the audio collector, the fire alarm and the network time corrector all adopt ARM7 architecture chips as core modules to operate a Linux system; the pager adopts a 7-inch capacitive touch screen and an industrial TFT display screen and supports a one-key paging function; the network sound box system has 20W/30W/40W power output, can be connected with a secondary box loudspeaker, is internally provided with a 4G FLASH and can store 1000 MP3 files with left and right standard formats; the audio collector adopts a modular design, the highest supports four external sound sources to collect, the sampling rate is selected from 16KHz, 22.05KHz, 32KHz, 44.1KHz and 48KHz, and single track and double track are supported to be selected; the fire alarm supports at most 32 channels and supports short circuit and level triggering; the network time corrector supports Beidou and GPS dual-mode positioning, supports manual time zone setting, and can regularly multicast and send time information to calibrate the date and time of equipment in the local area network.
More specifically, as shown in fig. 3, as an internal structural schematic diagram of a network timing device in the system of the embodiment, first, the network timing device acquires a GPS signal through an antenna, wherein a built-in GPS module converts the acquired GPS signal into a digital signal, then sends the digital signal to a main control chip of the network timing device, analyzes the digital signal to obtain necessary location information, determines calibration time of a specific location according to the location information, and then outputs the calibration time to a network broadcast server or a power amplifier terminal of a broadcast system through the network chip and an RJ45 interface.
As shown in fig. 4, in order to schematically illustrate the internal structure of the audio collector in the system of the embodiment, first, the operational amplifier collects an audio signal through the AUX audio socket, then converts the collected audio signal (analog signal) into a digital signal through the decoding chip, and outputs the digital signal to the network broadcast server or the power amplifier terminal of the broadcast system through the main control chip, the network chip and the RJ45 interface.
As shown in fig. 5, a schematic structural diagram of a fire alarm in the system of the embodiment is that a 74HC14 chip is mainly used to acquire sensor signals, perform necessary processing such as analog-to-digital conversion, and obtain alarm signals, which are sent to an STM32 acquisition chip, and an I/O trigger panel connected to the STM32 acquisition chip, for example, an LED display screen is used to perform visual display of alarm information, and then send the alarm signals to an ARM9 main control chip, and then output to a network broadcast server or a power amplifier terminal of a broadcast system via a network chip and an RJ45 interface.
On the other hand, based on the network broadcast system provided by the first aspect, the present application further provides a method for switching an operating mode of the network broadcast system, where the method includes steps S100 to S400:
s100, according to a synchronization request of an audio file of a network broadcast server, obtaining a list file containing the audio file, and synchronizing the list file to a terminal;
specifically, as shown in fig. 6, a network broadcast server initiates a request for synchronizing songs to a pager and a network speaker, the pager and the network speaker request acquisition of a song list file after receiving the request, and then download the song list file to the local, wherein the pager only needs to display a song list, and does not need to play songs, so that the song file does not need to be downloaded continuously; the network sound boxes request the server to download the songs one by one according to the song sequence on the list, and the server can concurrently process the downloading request until all the songs are downloaded, so that each network sound box can simultaneously store the same songs to the local.
It should be noted that, as shown in fig. 7, the network broadcast server initiates a request for synchronizing timing information to the network speakers, after receiving the request, the pager and the network speakers request to acquire a timing information file, and then the server concurrently sends a download processing request, and each network speaker downloads the timing information file of the server to the local.
S200, in a first preset period, determining that the terminal does not receive a first search instruction of the network broadcast server, and switching the terminal to a distribution mode;
when the network broadcast server is abnormal and disconnected from the terminal, the working modes of all the network sound boxes can be automatically changed into a distributed mode to run, and in the embodiment, a variable can be preset: the value of the variable is centralized mode or distributed mode, and the mode of operation in the network broadcast system is determined by changing the variable.
Specifically, in the embodiment, the first preset period is a preset time length, the first search instruction is a search instruction for searching the terminal, which is issued by the network broadcast server, and the search instruction may also be a command packet; exemplarily, as shown in fig. 8, when the server operates normally, the server is in a centralized operation mode, and a search command packet is multicast and sent to all terminals every 10 seconds, and when the terminal receives the search command packet of the server, it is determined that the server is online, and the time for receiving the server command packet is updated; when the server is disconnected from the terminal due to abnormality, the terminal can not receive the search packet of the server any more, each terminal is provided with a timer, the current time is subtracted by the last time of receiving the server command packet every 1 second, and when the difference value is more than or equal to 30 seconds, the terminal can change the working mode into a distribution mode, wherein the distribution mode comprises a paging station, an audio collector, a fire alarm and a network sound box.
S300, acquiring a first audio playing request of a pager;
s400, according to the target audio file in the first audio playing request, calling the target audio file from the list file in the terminal in the distributed mode for broadcasting;
specifically, after the system of the embodiment is switched to the distribution mode, the pager may directly request the network sound box to request the song, as shown in fig. 9, the pager first initiates a song-on-demand request to the selected network sound box, that is, a first audio playing request, after the network sound box receives the request, finds a locally corresponding song from the list, and then plays a local song file, until the pager initiates a playing-end request, the network sound box will recover to the idle state
In some alternative embodiments, after the step of synchronizing the list file to the terminal, the switching method further comprises steps S110-S130:
s110, in a first preset period, determining that a terminal receives a second search instruction of the network broadcast server, and switching the terminal to a centralized mode;
s120, acquiring a second audio playing request of the network broadcast server;
s130, according to the target audio file in the second audio playing request, the target audio file is called from the list file in the terminal in the centralized mode for broadcasting, or according to the second audio playing request, the terminal downloads and broadcasts the target audio file.
Specifically, in the embodiment, if the network sound box accurately receives the search command packet sent by the network broadcast server within the preset time interval, the system will keep operating in the centralized mode, and the terminal will find the locally corresponding song from the list according to the request for requesting the song initiated by the network broadcast server and then play the local song file; or, the target song required by the song-on-demand is not updated to the local synchronously, and the terminal downloads the target song from the network broadcast server and plays the target song.
In some alternative embodiments, after the step of synchronizing the list file to the terminal, and after the step of switching the terminal to the distribution mode, the switching method further includes steps S210-S220:
s210, acquiring a second search instruction of the pager;
s220, visually displaying the working modes of the terminal according to the second search instruction, wherein the working modes comprise a distribution mode and a concentration mode;
the second search instruction is an instruction for acquiring the working mode of the network loudspeaker box in the current network broadcasting system, and the acquired working mode can comprise a distribution mode and a concentration mode; specifically, in the embodiment, after the operating mode of the system is switched to the distributed mode, the pager is responsible for searching and displaying the terminal, as shown in fig. 10, the pager first multicast a search command, and the terminal that joined the multicast before receives the search command, and then the terminal sends out the terminal status, and after receiving the operating mode of the terminal, the pager stores the information of the terminal, and then updates the interface display terminal.
In some alternative embodiments, after the step of switching the terminal to the distribution mode, the switching method further includes steps S230-S40:
s230, acquiring an external audio data stream according to an external audio source playing request initiated by the pager;
and S240, transmitting the external audio data stream to the terminal for broadcasting through multicast.
Specifically, as shown in fig. 11, after the system is switched to the distribution mode, the pager may also directly play the external sound source to the network sound box, first, the pager initiates a request for playing the external sound source to the selected network sound box, and after the audio collector receives the request, the audio collector starts to collect the external audio data stream, and at this time, the network sound box already enters a state of receiving the external audio. And then the audio collector can multicast the collected data stream, and the network sound box receives and plays the audio data stream. And the audio collector can not stop collecting the external sound source until the pager initiates a playing ending request, and the network sound box restores to an idle state.
In some alternative embodiments, after the step of switching the terminal to the distribution mode, the switching method further includes the step S250:
and S250, sending the paging data stream to the terminal for broadcasting through multicast according to the paging instruction and the paging data stream initiated by the pager.
Specifically, as shown in fig. 12, after the system switches to the distribution mode, the pager may also directly initiate paging to the network speaker. The pager initiates a paging request to the selected network sound box, the network sound box enters a paging state after receiving the paging request, then the pager broadcasts and sends a data stream in a group mode, the network sound box receives and broadcasts the paging data stream, and the network sound box restores to an idle state directly after paging is finished.
In some alternative embodiments, before the step of retrieving the target audio file from the list file for broadcasting in the terminal in the distribution mode, the switching method may further include steps S310 to S320:
s310, acquiring calibration time from a network timer according to a second preset period;
and S320, updating and synchronizing the local time of the terminal according to the calibration time.
Specifically, as shown in fig. 13, after switching to the distribution mode, all terminals on the network need to use the network timer to unify the calibration time. After the network time corrector is successfully positioned, the date and time information is multicast and sent every ten seconds, so that the network terminals on the local area network can calibrate the time, and the uniformity of the time is ensured.
Further, in some alternative embodiments, after the local time of the terminal is updated and synchronized, the embodiment may further obtain specific timing information, and call the target audio file for broadcasting according to the timing information and the updated and synchronized local time.
Specifically, as shown in fig. 14, since the network timing device ensures time uniformity of all speakers, each network speaker can execute timing tasks at the same time point. The network sound box synchronizes the timing information set on the server to the local before, so that the sound box can judge the start of timing time according to the timing information, then finds out the corresponding song from the local list, starts playing the local song file, and recovers the idle state until the timing time is over, and the execution timing points of all the network sound boxes are completely independent and do not influence each other.
In some alternative embodiments, after the step of retrieving the target audio file from the list file for broadcasting in the terminal in the distribution mode, the switching method further includes steps S410-S420:
s410, acquiring fire alarm information, and determining an alarm correlation terminal according to channel configuration information in the fire alarm information;
and S420, calling an alarm sound effect file from the list file of the alarm related terminal to broadcast according to the fire alarm information.
Specifically, as shown in fig. 15, after the distribution mode is switched, the fire-fighting linkage function can work normally as it is. The fire-fighting configuration information set on the server is synchronized to the local before the fire-fighting alarm, so that after the channel triggers to alarm, the fire-fighting alarm informs the associated subareas to play the alarm sound effect according to the configuration information, after the network sound box receives the notification, the local corresponding alarm sound effect file is found, then the alarm sound effect is played, and the idle state is recovered until the channel cancellation alarm notification of the fire-fighting alarm is received.
From the above specific implementation process, it can be concluded that the technical solution provided by the present invention has the following advantages or advantages compared to the prior art:
the network broadcasting system that this application technical scheme provided a support two kinds of mode, the system is in the operation under the centralized mode under the normal circumstances of server, and after the server appears unusually and terminal disconnection, all terminals can automatic switch to the mode operation that distributes, and all functions all can normal operating:
1) the pager is responsible for searching and displaying the terminal;
2) the song requested by the user and an external sound source are sent through the pager;
3) the pager can directly page any network sound box;
4) the plurality of network sound boxes can independently execute timing tasks on time;
5) the fire-fighting linkage function can run normally.
In alternative embodiments, the functions/acts noted in the block diagrams may occur out of the order noted in the operational illustrations. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality/acts involved. Furthermore, the embodiments presented and described in the flow charts of the present invention are provided by way of example in order to provide a more thorough understanding of the technology. The disclosed methods are not limited to the operations and logic flows presented herein. Alternative embodiments are contemplated in which the order of various operations is changed and in which sub-operations described as part of larger operations are performed independently.
Furthermore, although the present invention is described in the context of functional modules, it should be understood that, unless otherwise stated to the contrary, one or more of the functions and/or features may be integrated in a single physical device and/or software module, or one or more of the functions and/or features may be implemented in a separate physical device or software module. It will also be appreciated that a detailed discussion of the actual implementation of each module is not necessary for an understanding of the present invention. Rather, the actual implementation of the various functional modules in the apparatus disclosed herein will be understood within the ordinary skill of an engineer, given the nature, function, and internal relationship of the modules. Accordingly, those skilled in the art can, using ordinary skill, practice the invention as set forth in the claims without undue experimentation. It is also to be understood that the specific concepts disclosed are merely illustrative of and not intended to limit the scope of the invention, which is defined by the appended claims and their full scope of equivalents.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A network broadcasting system comprises a network broadcasting server, a pager and a power amplifier terminal, and is characterized in that the pager is connected to the network broadcasting server through a local area network, and the power amplifier terminal is connected to the network broadcasting server through the local area network;
the network broadcast server is used for sending a synchronization request of an audio file and synchronizing a list file containing the audio file to the power amplifier terminal; and sending a second audio play request;
the pager is used for sending a first audio playing request so that the power amplifier terminal broadcasts a target audio file in the first audio playing request;
the power amplifier terminal is used for determining whether a first search instruction of the network broadcast server is received or not in a first preset period; determining that the first search instruction is not received, switching to a distribution mode, and playing the target audio file according to the first audio playing request; or, determining that the first search instruction is received, switching to a centralized mode, and playing the target audio file according to the second audio playing request.
2. The network broadcasting system of claim 1, further comprising a network timer, an audio collector and a fire alarm;
the network timing device is connected to the network broadcast server through a local area network, the audio collector is connected to the network broadcast server through the local area network, and the fire-fighting alarm device is connected to the network broadcast server through the local area network;
the network time corrector is used for sending the calibration time to the power amplifier terminal; the audio collector is used for collecting an external audio data stream and sending the external audio data stream to the power amplifier terminal; the fire alarm is used for generating fire alarm information, so that the power amplifier terminal can call an alarm sound effect file to broadcast.
3. The switching method of the working mode of the network broadcasting system is applied to the network broadcasting system as claimed in claim 1, and is characterized by comprising the following steps:
according to a synchronization request of an audio file of a network broadcast server, acquiring a list file containing the audio file, and synchronizing the list file to a power amplifier terminal;
in a first preset period, determining that the power amplifier terminal does not receive a first search instruction of the network broadcast server, and switching the power amplifier terminal to a distribution mode;
acquiring a first audio playing request of a pager;
and calling the target audio file from the list file in the power amplifier terminal in the distributed mode for broadcasting according to the target audio file in the first audio playing request.
4. The method for switching the working mode of the network broadcasting system according to claim 3, wherein after synchronizing the list file to the power amplifier terminal, the method further comprises the following steps:
in a first preset period, determining that the power amplifier terminal receives a second search instruction of the network broadcast server, and switching the power amplifier terminal to a centralized mode;
acquiring a second audio playing request of the network broadcast server;
according to a target audio file in the second audio playing request, calling the target audio file from the list file in the power amplifier terminal in the centralized mode for broadcasting;
or, according to the second audio playing request, the power amplifier terminal downloads and broadcasts the target audio file.
5. The method for switching the working mode of the network broadcasting system according to claim 4, wherein after the power amplifier terminal is switched to the distribution mode, the method further comprises the following steps:
acquiring a second search instruction of the pager;
and visually displaying the working modes of the power amplifier terminal according to the second search instruction, wherein the working modes comprise a distribution mode and a concentration mode.
6. The method for switching the working mode of the network broadcasting system according to claim 3, wherein after the power amplifier terminal is switched to the distribution mode, the method further comprises the following steps:
acquiring an external audio data stream according to an external audio source playing request initiated by a pager;
and sending the external audio data stream to a power amplifier terminal for broadcasting through multicast.
7. The method for switching the working mode of the network broadcasting system according to claim 3, wherein after the power amplifier terminal is switched to the distribution mode, the method further comprises the following steps:
and sending the paging data stream to the power amplifier terminal for broadcasting through multicast according to the paging instruction and the paging data stream initiated by the pager.
8. The method according to claim 3, wherein before the target audio file is retrieved from the list file for broadcasting in the distributed power amplifier terminals, the method further comprises the following steps:
acquiring calibration time from a network timer according to a second preset period;
and updating and synchronizing the local time of the power amplifier terminal according to the calibration time.
9. The method according to claim 3, wherein after the target audio file is retrieved from the list file for broadcasting in the distributed power amplifier terminals, the method further comprises the following steps:
acquiring fire alarm information, and determining an alarm associated power amplifier terminal according to channel configuration information in the fire alarm information;
and calling an alarm sound effect file from the list file of the alarm associated power amplifier terminal to broadcast according to the fire alarm information.
10. The method for switching operating modes of a network broadcasting system according to claim 8, wherein after the update synchronization of the local time of the power amplifier terminal, the method further comprises:
and acquiring timing information, and calling the target audio file for broadcasting according to the timing information and the updated and synchronized local time.
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