Emergency broadcast service data processing method, terminal, device, medium and program

Abstract

The embodiment of the invention discloses an emergency broadcast service data processing method and device, equipment, a medium and a program. The method is applied to a digital frequency modulation emergency broadcast terminal, and comprises the following steps: receiving a digital frequency modulation signal sent by a digital frequency modulation emergency broadcast adapter, the signal being generated by multiplexing emergency broadcast digital audio data and a digital frequency modulation broadcast control instruction by the digital frequency modulation emergency broadcast adapter in a target multiplexing mode; demodulating the digital frequency modulation signal to obtain a demodulated signal, and demultiplexing the demodulated signal to obtain a digital frequency modulation broadcast control instruction and emergency broadcast digital audio data; and obtaining target emergency broadcast digital audio data from the emergency broadcast digital audio data according to the digital frequency modulation broadcast control instruction for playing. According to the technical scheme of the embodiment of the invention, the utilization rate of frequency resources during audio transmission of the emergency broadcast service can be improved, so that the audio transmission efficiency of the emergency broadcast service is improved.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of emergency broadcast technology, and in particular to a method, terminal, device, equipment, medium, and program for processing emergency broadcast service data. Background Art

[0002] Wireless emergency broadcasting has the advantages of rapid transmission, wide coverage and convenient reception. Frequency Modulation (FM) is an important channel for wireless emergency broadcasting.

[0003] Currently, the Frequency Modulation-Radio Data System (FM-RDS) transmission mode is widely used for emergency broadcasting. FM-RDS wireless emergency broadcasts typically use FM frequencies in the 76-87 MHz or 88-108 MHz bands to transmit audio signals, and add RDS control signals to its 57 kHz subchannel.

[0004] During the development of this invention, the inventors discovered the following drawbacks in the existing technology: The FM-RDS mode suffers from a significant issue: each frequency can only transmit one FM analog audio channel. When emergency broadcasts require the transmission of multiple audio channels, multiple frequencies must be occupied, severely impacting the normal broadcasting of FM programs. Summary of the Invention

[0005] Embodiments of the present invention provide an emergency broadcast service data processing method, terminal, device, equipment, medium and program, which can improve the utilization of frequency resources when the emergency broadcast service transmits audio, thereby improving the efficiency of the emergency broadcast service audio transmission.

[0006] According to one aspect of the present invention, a method for processing emergency broadcast service data is provided, which is applied to a digital FM emergency broadcast terminal, comprising:

[0007] Receiving a digital FM modulated signal sent by a digital FM emergency broadcast adapter; wherein the digital FM modulated signal is generated by the digital FM emergency broadcast adapter multiplexing the emergency broadcast digital audio data and the digital FM broadcast control instruction using a target multiplexing mode;

[0008] Demodulating the digital FM modulated signal to obtain a demodulated signal, and demultiplexing the demodulated signal to obtain the digital FM broadcast control instruction and the emergency broadcast digital audio data;

[0009] Target emergency broadcast digital audio data is acquired from the emergency broadcast digital audio data according to the digital FM broadcast control instruction for playing.

[0010] According to another aspect of the present invention, a digital FM emergency broadcast terminal is provided, comprising a signal demodulation module and a main control module, wherein the signal demodulation module and the main control module are communicatively connected; wherein:

[0011] The signal demodulation module is used to receive a digital FM modulated signal sent by a digital FM emergency broadcast adapter; wherein the digital FM modulated signal is generated by the digital FM emergency broadcast adapter multiplexing the emergency broadcast digital audio data and the digital FM broadcast control instruction using a target multiplexing mode; and demodulate the digital FM modulated signal to obtain a demodulated signal.

[0012] The main control module is used to demultiplex the demodulated signal to obtain the digital FM broadcast control instruction and the emergency broadcast digital audio data; and obtain target emergency broadcast digital audio data from the emergency broadcast digital audio data according to the digital FM broadcast control instruction for playback.

[0013] According to another aspect of the present invention, there is provided an emergency broadcast service data processing device, which is configured in a digital FM emergency broadcast terminal and includes:

[0014] A digital FM modulation signal receiving module is used to receive a digital FM modulation signal sent by a digital FM emergency broadcast adapter; wherein the digital FM modulation signal is generated by the digital FM emergency broadcast adapter multiplexing the emergency broadcast digital audio data and the digital FM broadcast control instruction using a target multiplexing mode;

[0015] a digital FM instruction data acquisition module, configured to demodulate the digital FM modulation signal to obtain a demodulated signal, and demultiplex the demodulated signal to obtain the digital FM broadcast control instruction and the emergency broadcast digital audio data;

[0016] The digital audio data playing module is used to obtain target emergency broadcast digital audio data from the emergency broadcast digital audio data according to the digital FM broadcast control instruction and play the target emergency broadcast digital audio data.

[0017] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the emergency broadcast service data processing method according to any embodiment of the present invention when executed.

[0018] According to another aspect of the present invention, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the computer program implements the emergency broadcast service data processing method according to any embodiment of the present invention.

[0019] The embodiment of the present invention utilizes a digital FM emergency broadcast terminal to receive a digital FM modulated signal generated by a digital FM emergency broadcast adapter that multiplexes emergency broadcast digital audio data and digital FM broadcast control instructions using a target multiplexing mode, further demodulates the digital FM modulated signal to obtain a demodulated signal, and demultiplexes the demodulated signal to obtain digital FM broadcast control instructions and emergency broadcast digital audio data; thereby, target emergency broadcast digital audio data is obtained from the emergency broadcast digital audio data according to the digital FM broadcast control instructions for playback, thereby solving the problems of low frequency resource utilization and transmission efficiency in audio transmission by existing emergency broadcast services, and can improve the utilization of frequency resources in audio transmission by emergency broadcast services, thereby improving the efficiency of audio transmission by emergency broadcast services.

[0020] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a flow chart of a method for processing emergency broadcast service data provided by Embodiment 1 of the present invention;

[0023] Figure 2 This is a flow chart of a method for processing emergency broadcast service data provided by Embodiment 2 of the present invention;

[0024] Figure 3 This is a schematic diagram of a service multiplexing frame payload structure provided by the second embodiment of the present invention;

[0025] Figure 4 This is a flow chart of a method for a digital FM emergency broadcast terminal to process emergency broadcast service data provided by the second embodiment of the present invention;

[0026] Figure 5 A schematic diagram of a digital FM emergency broadcast terminal provided in a third embodiment of the present invention;

[0027] Figure 6 This is a structural diagram of a digital FM emergency broadcast terminal provided by Embodiment 3 of the present invention;

[0028] Figure 7It is a schematic diagram of an emergency broadcast service data processing device provided in Embodiment 4 of the present invention. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0030] It should be noted that the term "object" in the description and claims of the present invention and the above-mentioned drawings is used to distinguish similar objects and is not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way are interchangeable where appropriate so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or that are inherent to these processes, methods, products or devices.

[0031] Example 1

[0032] Figure 1 This is a flow chart of a method for processing emergency broadcast service data provided by the first embodiment of the present invention. This embodiment is applicable to the case where multiple emergency broadcast control instructions and corresponding emergency broadcast audio are received on a single FM frequency. The method can be executed by an emergency broadcast service data processing device, which can be implemented by software and / or hardware and can generally be integrated into an electronic device, which can be a digital FM emergency broadcast terminal. Figure 1 As shown, the method includes the following operations:

[0033] S110. Receive a digital FM modulated signal sent by a digital FM emergency broadcast adapter; wherein the digital FM modulated signal is generated by the digital FM emergency broadcast adapter multiplexing the emergency broadcast digital audio data and the digital FM broadcast control instruction using a target multiplexing mode.

[0034] Among them, the digital FM emergency broadcast adapter can be an adapter for converting emergency broadcast digital audio data into a digital FM modulation signal. The digital FM modulation signal can be a signal obtained by modulating the emergency broadcast digital audio data and the digital FM broadcast control instruction by the digital FM emergency broadcast adapter, and the signal can be transmitted in the emergency broadcast system. The emergency broadcast digital audio data can be digital audio data that needs to be transmitted through the emergency broadcast system. Exemplarily, the emergency broadcast digital audio data can include but is not limited to alarm audio, emergency broadcast audio, distress signals, and audio data generated by audio programs, etc. As long as it is audio data in digital form that can be transmitted through the application broadcast system, the embodiment of the present invention does not limit the specific data content included in the emergency broadcast digital audio data. The digital FM broadcast control instruction can be a control instruction used to control the transmission of emergency broadcast digital audio data in the emergency broadcast system. The target multiplexing mode can be a specific multiplexing mode adopted by the digital FM emergency broadcast adapter for the emergency broadcast digital audio data and the digital FM broadcast control instruction.

[0035] In an embodiment of the present invention, a digital FM emergency broadcast terminal can receive digital FM modulated signals transmitted by multiple digital FM emergency broadcast adapters based on a single FM frequency, thereby enabling reception of multiple channels of digital audio data within the emergency broadcast system. Accordingly, the digital FM modulated signals are generated by the digital FM emergency broadcast adapter by multiplexing the emergency broadcast digital audio data and digital FM broadcast control commands using a target multiplexing mode.

[0036] Optionally, the target multiplexing mode may include an independent multiplexing mode for emergency broadcast digital audio data and digital FM broadcast control instruction information. Exemplarily, the independent multiplexing mode for emergency broadcast digital audio data and digital FM broadcast control instruction information may be to multiplex the digital FM broadcast control instruction and N channels of emergency broadcast digital audio data using different service multiplexing frames, respectively.

[0037] Alternatively, the target multiplexing mode may further include a centralized multiplexing mode for emergency broadcast digital audio data and digital FM broadcast control instruction information. Exemplarily, the centralized multiplexing mode for emergency broadcast digital audio data and digital FM broadcast control instructions may be to multiplex the digital FM broadcast control instructions and N channels of emergency broadcast digital audio data using one or a limited number of service multiplexing frames.

[0038] S120: Demodulate the digital FM modulation signal to obtain a demodulated signal, and demultiplex the demodulated signal to obtain the digital FM broadcast control instruction and the emergency broadcast digital audio data.

[0039] Correspondingly, after receiving the digital FM modulation signal sent by the digital FM emergency broadcast adapter, the digital FM emergency broadcast terminal can demodulate the digital FM modulation signal to obtain a demodulated signal, and demultiplex the demodulated signal to obtain digital FM broadcast control instructions and emergency broadcast digital audio data, thereby realizing the reception of digital FM broadcast control instructions and emergency broadcast digital audio data at one FM frequency point.

[0040] S130: Obtain target emergency broadcast digital audio data from the emergency broadcast digital audio data according to the digital FM broadcast control instruction and play the data.

[0041] The target emergency broadcast digital audio data may be the audio data in the emergency broadcast digital audio data that needs to be played on the digital FM emergency broadcast terminal.

[0042] In an embodiment of the present invention, after demodulating the digital FM modulation signal to obtain a demodulated signal, and demultiplexing the demodulated signal to obtain a digital FM broadcast control instruction and emergency broadcast digital audio data, the digital FM emergency broadcast terminal can obtain the target emergency broadcast digital audio data from the emergency broadcast digital audio data according to the digital FM broadcast control instruction for playback, thereby realizing the selection of an audio from multiple channels of emergency broadcast digital audio data at one FM frequency point and playing it on the digital FM emergency broadcast terminal.

[0043] The embodiment of the present invention utilizes a digital FM emergency broadcast terminal to receive a digital FM modulated signal generated by a digital FM emergency broadcast adapter that multiplexes emergency broadcast digital audio data and digital FM broadcast control instructions using a target multiplexing mode, further demodulates the digital FM modulated signal to obtain a demodulated signal, and demultiplexes the demodulated signal to obtain digital FM broadcast control instructions and emergency broadcast digital audio data; thereby, target emergency broadcast digital audio data is obtained from the emergency broadcast digital audio data according to the digital FM broadcast control instructions for playback, thereby solving the problems of low frequency resource utilization and transmission efficiency in audio transmission by existing emergency broadcast services, and can improve the utilization of frequency resources in audio transmission by emergency broadcast services, thereby improving the efficiency of audio transmission by emergency broadcast services.

[0044] Example 2

[0045] Figure 2This is a flowchart of an emergency broadcast service data processing method provided by the second embodiment of the present invention. This embodiment is concretized based on the above embodiment. In this embodiment, a plurality of specific optional implementation methods are provided for the digital FM emergency broadcast adapter to multiplex the emergency broadcast digital audio data and the digital FM broadcast control instructions using the target multiplexing mode to generate a digital FM modulation signal, and a specific implementation method for the digital FM emergency broadcast terminal to demultiplex the digital FM modulation signal to obtain the digital FM broadcast control instructions and the emergency broadcast digital audio data. At the same time, a specific implementation method for obtaining the target emergency broadcast digital audio data from the emergency broadcast digital audio data according to the digital FM broadcast control instructions for playback is also provided. Accordingly, if Figure 2 As shown, the method of this embodiment may include:

[0046] S210. Receive a digital FM modulated signal sent by a digital FM emergency broadcast adapter; wherein the digital FM modulated signal is generated by the digital FM emergency broadcast adapter multiplexing the emergency broadcast digital audio data and the digital FM broadcast control instruction using a target multiplexing mode.

[0047] In an optional embodiment of the present invention, the digital FM emergency broadcast adapter can also be used to: obtain the emergency broadcast ID, start and end time, broadcast type and level, broadcast target device number list and broadcast audio data identification information of the digital FM broadcast control instruction; assign values ​​to the corresponding fields of the digital FM broadcast control instruction according to the emergency broadcast ID, start and end time, broadcast type and level, broadcast target device number list and broadcast audio data identification information to obtain the digital FM broadcast control instruction; wherein the broadcast audio data identification information includes the service multiplexing frame identifier and multiplexing subframe sequence number of the audio data.

[0048] The emergency broadcast ID is an identifier used to identify specific emergency broadcast digital audio data. The emergency broadcast system can use the emergency broadcast ID to quickly locate and activate the relevant emergency broadcast digital audio data. The start and end times are the specific times at which the emergency broadcast digital audio data begins and ends, ensuring that the emergency broadcast digital audio data is played within a predetermined timeframe. The broadcast type is the specific content type of the emergency broadcast digital audio data, such as news audio, music audio, or emergency notification audio. The level is the priority or importance of the emergency broadcast digital audio data. For example, emergency notification audio may have a high priority, ensuring its transmission priority. The broadcast type and level together determine the priority of the emergency broadcast digital audio data. The broadcast target device number list is a series of numbers representing specific devices or device groups that receive the emergency broadcast digital audio data. The broadcast audio data identification information can be used to identify the digital audio data content transmitted within the emergency broadcast system. For example, it may include, but is not limited to, the service multiplexing frame identifier and multiplexing subframe sequence number of the emergency broadcast digital audio data. The service multiplexing frame identifier identifies the service multiplexing frame that transmits the corresponding emergency broadcast digital audio data. The multiplexing subframe sequence number identifies the multiplexing subframe that multiplexes the corresponding emergency broadcast digital audio data.

[0049] It is understandable that the emergency broadcast system can transmit multiple emergency broadcast digital audio data through service multiplexing frames. The service multiplexing frame is a multiplexing frame used to encapsulate service information. Each service multiplexing frame may include multiple multiplexing subframes, and the multiplexing subframe is used to carry services. A multiplexing subframe can only carry data for one service, and the data for one service can be transmitted in one or more multiplexing subframes. Optionally, in an embodiment of the present invention, the multiplexing subframe used for multiplexing emergency broadcast digital audio data may be composed of a subframe header, an audio segment, and padding; the multiplexing subframe used for multiplexing digital FM broadcast control instructions may be composed of a subframe header, a data segment, and padding.

[0050] Specifically, when generating digital FM broadcast control instructions, the digital FM emergency broadcast adapter needs to extract the key information required to generate the digital FM broadcast control instructions, namely the emergency broadcast ID, start and end time, broadcast type and level, broadcast target device number list, corresponding audio data service multiplexing frame identifier and multiplexing subframe sequence number and other information, and then assign values ​​to the fields corresponding to the digital FM broadcast control instructions based on the above extracted information to generate the final required digital FM broadcast control instructions, thereby realizing the reception of digital FM broadcast control instructions at a FM frequency point.

[0051] In an optional embodiment of the present invention, the digital FM emergency broadcast adapter can also be used to: determine the service multiplexing payload structure of the service multiplexing frame corresponding to the emergency broadcast digital audio data and the digital FM broadcast control instruction according to the target multiplexing mode; and generate the service multiplexing frame header of the service multiplexing frame according to the service multiplexing frame identifier and multiplexing subframe information.

[0052] The service multiplexing frame may include a service multiplexing frame header and a service multiplexing payload. Figure 3 This is a schematic diagram of a service multiplexing frame payload structure provided by the second embodiment of the present invention. In a specific example, Figure 3 As shown, the service multiplexing payload can be composed of one or more multiplexing subframes, with a maximum of no more than a preset threshold of multiplexing subframes. For example, the preset threshold can be 15, etc. Multiplexing subframes are sequentially placed into the service multiplexing frame. Multiplexing subframe information can be related information about the multiplexing subframes that carry emergency broadcast digital audio data and digital FM broadcast control instructions, including, for example, but not limited to, the number of multiplexing subframes and the length of the multiplexing subframes. The service multiplexing frame header can be the frame header of the service multiplexing frame and can be used to organize and manage the control information of the service multiplexing frame.

[0053] In an embodiment of the present invention, after determining the target multiplexing mode for emergency broadcast digital audio data and digital FM broadcast control instructions, the digital FM emergency broadcast adapter can multiplex the emergency broadcast digital audio data and digital FM broadcast control instructions in a multiplexing subframe according to the specific multiplexing method specified by the target multiplexing mode, thereby obtaining a service multiplexing payload structure of the service multiplexing frame corresponding to the emergency broadcast digital audio data and digital FM broadcast control instructions. Furthermore, the digital FM emergency broadcast adapter can generate a service multiplexing frame header for the service multiplexing frame by combining multiplexing subframe information such as the service multiplexing frame identifier, the number of multiplexing subframes, and the length of the multiplexing subframe. Table 1 is a list of service multiplexing frame header parameters provided in Embodiment 2 of the present invention. For example, as shown in Table 1, in addition to including key information such as the service multiplexing frame identifier, the number of multiplexing subframes, and the length of the multiplexing subframe, the service multiplexing frame header may also include, but is not limited to, the service multiplexing frame header length, an emergency broadcast indication, and a network information table update sequence number. This embodiment of the present invention does not limit the specific parameter types and parameter content included in the service multiplexing frame header.

[0054] Table 1 Service multiplexing frame header parameter list

[0055]

[0056] In an optional embodiment of the present invention, the digital FM emergency broadcast adapter can also be used to: determine the number of target service multiplexing frames based on the number of the emergency broadcast digital audio data and the digital FM broadcast control instructions; wherein each target service multiplexing frame includes a multiplexing subframe; and obtain the service multiplexing payload structure of the service multiplexing frame by multiplexing each of the emergency broadcast digital audio data and the digital FM broadcast control instructions through the multiplexing subframes of each target service multiplexing frame.

[0057] The target service multiplexing frame may be a service multiplexing frame required by the emergency broadcasting system to multiplex the emergency broadcasting digital audio data and the digital FM broadcasting control instructions.

[0058] In an embodiment of the present invention, the target multiplexing mode can be an independent multiplexing mode for emergency broadcast digital audio data and digital FM broadcast control instructions. That is, the digital FM emergency broadcast adapter can determine the number of target service multiplexing frames based on the number of emergency broadcast digital audio data and digital FM broadcast control instructions. The target service multiplexing frame can use a multiplexing subframe to multiplex the emergency broadcast digital audio data or digital FM broadcast control instructions, thereby multiplexing each emergency broadcast digital audio data and digital FM broadcast control instruction through the multiplexing subframes of each target service multiplexing frame, thereby obtaining a service multiplexing payload structure of the service multiplexing frame.

[0059] For example, assuming a single digital FM broadcast control instruction, which is a packaged control instruction that includes information about multiple different digital FM broadcast control instructions and multiple channels of emergency broadcast digital audio data, such as emergency broadcast digital audio data 1, emergency broadcast digital audio data 2, and emergency broadcast digital audio data 3, the number of emergency broadcast digital audio data and the digital FM broadcast control instruction determines the number of target service multiplexing frames to be four. Therefore, four service multiplexing frames can be determined, namely, service multiplexing frame 1, service multiplexing frame 2, service multiplexing frame 3, and service multiplexing frame 4. Furthermore, the digital FM emergency broadcast adapter can multiplex the digital FM broadcast control instruction using the multiplexing subframe of service multiplexing frame 1, multiplex the emergency broadcast digital audio data 1 using the multiplexing subframe of service multiplexing frame 2, multiplex the emergency broadcast digital audio data 2 using the multiplexing subframe of service multiplexing frame 3, and multiplex the emergency broadcast digital audio data 3 using the multiplexing subframe of service multiplexing frame 4.

[0060] In an optional embodiment of the present invention, the digital FM emergency broadcast adapter can also be used to: determine a target service multiplexing frame corresponding to the emergency broadcast digital audio data and the digital FM broadcast control instructions when it is determined that the sum of the number of the emergency broadcast digital audio data and the number of the digital FM broadcast control instructions is less than or equal to the set multiplexing sub-frame number threshold; the number of multiplexing sub-frames included in the target service multiplexing frame is less than or equal to the set multiplexing sub-frame number threshold; and obtain the service multiplexing payload structure of the service multiplexing frame by multiplexing each of the emergency broadcast digital audio data and the digital FM broadcast control instructions through each multiplexing sub-frame of the target service multiplexing frame.

[0061] The multiplexing subframe number threshold may be a predetermined maximum number of multiplexing subframes that can be included. For example, the multiplexing subframe number threshold may be 15. The embodiment of the present invention does not specifically limit the multiplexing subframe number threshold.

[0062] In an embodiment of the present invention, the target multiplexing mode can also be a centralized multiplexing mode of emergency broadcast digital audio data and digital FM broadcast control instructions. The centralized multiplexing mode can also have two different multiplexing scenarios. Specifically, before the digital FM emergency broadcast adapter multiplexes the emergency broadcast digital audio data and the digital FM broadcast control instructions using the centralized multiplexing mode, it can first be determined whether the sum of the number of emergency broadcast digital audio data and the number of digital FM broadcast control instructions exceeds the maximum number of multiplexing subframes that can be included in a target service multiplexing frame. If it is determined that the sum of the number of emergency broadcast digital audio data and the number of digital FM broadcast control instructions is less than or equal to the set multiplexing subframe number threshold, it indicates that the sum of the number of emergency broadcast digital audio data and the number of digital FM broadcast control instructions does not exceed the maximum number of multiplexing subframes that can be included in a target service multiplexing frame. In this case, the digital FM emergency broadcast adapter can configure only one target service multiplexing frame corresponding to the emergency broadcast digital audio data and the digital FM broadcast control command, and multiplex each emergency broadcast digital audio data and digital FM broadcast control command into each multiplexing subframe of the target service multiplexing frame, thereby obtaining a service multiplexing payload structure of the service multiplexing frame. In other words, the digital FM broadcast control command and N channels of emergency broadcast digital audio data are multiplexed into each multiplexing subframe of a target service multiplexing frame.

[0063] For example, assuming that the number of emergency broadcast digital audio data is 3, the number of digital FM broadcast control instructions is 1, and the multiplexing sub-frame number threshold is 15, accordingly, the digital FM emergency broadcast adapter can multiplex the digital FM broadcast control instruction through multiplexing sub-frame 1 in service multiplexing frame 1, multiplex the emergency broadcast digital audio data 1 through multiplexing sub-frame 2 in service multiplexing frame 1, multiplex the emergency broadcast digital audio data 2 through multiplexing sub-frame 3 in service multiplexing frame 1, and multiplex the emergency broadcast digital audio data 3 through multiplexing sub-frame 4 in service multiplexing frame 1. It can be understood that when the digital FM emergency broadcast adapter uses a service multiplexing frame to multiplex the number of each emergency broadcast digital audio data and digital FM broadcast control instruction in a centralized multiplexing manner, the number of multiplexing sub-frames included in the target service multiplexing frame is less than or equal to the set multiplexing sub-frame number threshold.

[0064] In an optional embodiment of the present invention, the digital FM emergency broadcast adapter can also be used to: determine a plurality of target service multiplexing frames corresponding to the emergency broadcast digital audio data and the digital FM broadcast control instructions when it is determined that the sum of the number of the emergency broadcast digital audio data and the number of the digital FM broadcast control instructions is greater than a set multiplexing sub-frame number threshold; the number of multiplexing sub-frames included in the target service multiplexing frame is less than or equal to the set multiplexing sub-frame number threshold; and obtain the service multiplexing payload structure of the service multiplexing frame by multiplexing the emergency broadcast digital audio data and the digital FM broadcast control instructions through each multiplexing sub-frame of the plurality of target service multiplexing frames.

[0065] In an embodiment of the present invention, when a digital FM emergency broadcast adapter multiplexes emergency broadcast digital audio data and digital FM broadcast control instructions using a centralized multiplexing mode, if the sum of the number of emergency broadcast digital audio data and the number of digital FM broadcast control instructions is determined to be greater than a set multiplexing subframe number threshold, this indicates that the sum of the number of emergency broadcast digital audio data and the number of digital FM broadcast control instructions exceeds the maximum number of multiplexing subframes that can be included in a target service multiplexing frame. Therefore, the digital FM emergency broadcast adapter needs to configure multiple target service multiplexing frames corresponding to the emergency broadcast digital audio data and digital FM broadcast control instructions, and multiplex each emergency broadcast digital audio data and digital FM broadcast control instruction through each multiplexing subframe of the multiple target service multiplexing frames, thereby obtaining a service multiplexing payload structure of the service multiplexing frame.

[0066] For example, assuming that the number of emergency broadcast digital audio data is 16, the number of digital FM broadcast control instructions is 1, the multiplexing subframe number threshold is 15, and the number of multiplexing subframes included in the target service multiplexing frame is 15, then accordingly, the digital FM emergency broadcast adapter can multiplex the digital FM broadcast control instruction through multiplexing subframe 1 in service multiplexing frame 1, multiplex the emergency broadcast digital audio data 1 through multiplexing subframe 2 in service multiplexing frame 1, multiplex the emergency broadcast digital audio data 2 through multiplexing subframe 3 in service multiplexing frame 1, multiplex the emergency broadcast digital audio data 3 through multiplexing subframe 4 in service multiplexing frame 1, and so on, multiplex the emergency broadcast digital audio data 14 through multiplexing subframe 15 in service multiplexing frame 1, multiplex the emergency broadcast digital audio data 15 through multiplexing subframe 1 of service multiplexing frame 2, and multiplex the emergency broadcast digital audio data 16 through multiplexing subframe 2 of service multiplexing frame 2. It can be understood that when the digital FM emergency broadcast adapter uses multiple service multiplexing frames to multiplex the number of emergency broadcast digital audio data and digital FM broadcast control instructions through centralized multiplexing, the number of multiplexing subframes included in the target service multiplexing frame is less than or equal to the set multiplexing subframe number threshold.

[0067] S220 . Obtain a control multiplexing frame from the demodulated signal, parse the control multiplexing frame to obtain a control information table; parse the control information table to obtain a service multiplexing configuration table.

[0068] Among them, the control multiplexing frame is a multiplexing frame used to encapsulate control information. The control multiplexing frame may include a control multiplexing frame header and a control multiplexing frame payload. The control multiplexing frame payload may be composed of one or more control information tables, which are sequentially encapsulated in the control multiplexing frame, that is, the control information table can be obtained according to the control multiplexing frame analysis. The service multiplexing configuration table describes the configuration information of each service multiplexing frame in the current frequency point. For example, the service multiplexing configuration table may include but is not limited to the number of multiplexing subframes of each service multiplexing frame and the service identifier corresponding to the subframe. Table 2 is a service multiplexing configuration table provided in Example 2 of the present invention. For example, as shown in Table 2, in addition to including the main information such as the number of multiplexing subframes of each service multiplexing frame and the service identifier corresponding to the subframe, the service multiplexing configuration table may also include but is not limited to the service multiplexing configuration table update sequence number, service data layered modulation indication, and multiplexing frame transmission mode.

[0069] In an embodiment of the present invention, after demodulating the digital FM modulated signal to obtain a demodulated signal, the digital FM emergency broadcast terminal can obtain a control multiplexing frame from the demodulated signal. To obtain the corresponding emergency broadcast digital audio data, the digital FM emergency broadcast terminal can first parse the control multiplexing frame to obtain a control information table, and then parse the control information table to obtain a service multiplexing configuration table.

[0070] Table 2 Service multiplexing frame configuration table

[0071]

[0072] S230: Parse the service multiplexing configuration table to obtain the digital FM broadcast control instruction and the emergency broadcast digital audio data.

[0073] In the embodiment of the present invention, after obtaining the service multiplexing configuration table, the digital FM emergency broadcast terminal can parse the service configuration table to obtain the digital FM broadcast control instructions and the emergency broadcast digital audio data.

[0074] S240: Parse each of the digital FM broadcast control instructions to obtain a list of broadcast target device numbers corresponding to each of the digital FM broadcast control instructions.

[0075] In an embodiment of the present invention, after the digital FM emergency broadcast terminal parses the service multiplexing configuration table to obtain digital FM broadcast control instructions and emergency broadcast digital audio data, it parses each digital FM broadcast control instruction to obtain a list of target broadcast device numbers corresponding to each digital FM broadcast control instruction.

[0076] S250: Match the broadcast target device number list according to the local device resource code, and determine the target digital FM broadcast control instruction corresponding to the target broadcast target device number list according to the matching result.

[0077] The target broadcast target device number list may be a broadcast target device number list that matches the local device resource code, and the broadcast target device number list includes the local device resource code of the current digital FM emergency broadcast terminal and may also include the device resource codes of other digital FM emergency broadcast terminals. The target digital FM broadcast control instruction may be a digital FM broadcast control instruction that includes the target broadcast target device number list.

[0078] In an embodiment of the present invention, after obtaining the broadcast target device number lists corresponding to each digital FM broadcast control instruction, the digital FM emergency broadcast terminal can obtain local device resource codes and use the local device resource codes to match each broadcast target device number list. Based on the matching results, the broadcast target device number list including the local device resource codes is determined as the target broadcast target device number list. Furthermore, the digital FM broadcast control instruction corresponding to the target broadcast target device number list is determined as the target digital FM broadcast control instruction.

[0079] S260: Acquire the target emergency broadcast digital audio data according to the target digital FM broadcast control instruction and play it.

[0080] In an embodiment of the present invention, after determining the target digital FM broadcast control instruction corresponding to the target broadcast target device number list, the digital FM emergency broadcast terminal can parse the various fields of the target digital FM broadcast control instruction to obtain the target emergency broadcast digital audio data for playback based on the parsing results of the fields in the target digital FM broadcast control instruction.

[0081] In an optional embodiment of the present invention, obtaining the target emergency broadcast digital audio data for playback according to the target digital FM broadcast control instruction may include: obtaining broadcast audio data identification information of the target digital FM broadcast control instruction; wherein the broadcast audio data identification information includes a service multiplexing frame identification and a multiplexing subframe sequence number of the audio data; and obtaining the target emergency broadcast digital audio data from the emergency broadcast digital audio data for playback according to the broadcast audio data identification information.

[0082] Specifically, when parsing the target digital FM broadcast control command, the digital FM emergency broadcast terminal can obtain broadcast audio data identification information, such as the service multiplexing frame identifier and multiplexing subframe sequence number, included in the target digital FM broadcast control command. Furthermore, based on the broadcast audio data identification information, the digital FM emergency broadcast terminal can retrieve the target emergency broadcast digital audio data from the emergency broadcast digital audio data for playback, thereby enabling playback of multiple emergency broadcast digital audio data channels on a single FM frequency.

[0083] In an optional embodiment of the present invention, obtaining the target emergency broadcast digital audio data from the emergency broadcast digital audio data for playback based on the broadcast audio data identification information may include: determining the target identification service multiplexing frame from each service multiplexing frame based on the service multiplexing frame identification; determining the target multiplexing subframe from the target identification service multiplexing frame based on the multiplexing subframe sequence number; obtaining the emergency broadcast digital audio data included in the target multiplexing subframe as the target emergency broadcast digital audio data; and outputting the target emergency broadcast digital audio data to an external speaker for playback after decoding and power amplification processing.

[0084] The target identification service multiplexing frame may be a service multiplexing frame that matches the service multiplexing frame identification included in the target digital FM broadcast control instruction. The target multiplexing subframe may be a multiplexing subframe whose sequence number matches the multiplexing subframe sequence number included in the target identification service multiplexing frame.

[0085] Specifically, when the digital FM emergency broadcast terminal obtains the target emergency broadcast digital audio data from the emergency broadcast digital audio data according to the broadcast audio data identification information, it can first match the service multiplexing frame identification included in the target digital FM broadcast control instruction with the identification of each service multiplexing frame to determine the service multiplexing frame specified by the target digital FM broadcast control instruction as the target identification service multiplexing frame. Further, the target multiplexing subframe specified by the target digital FM broadcast control instruction is determined by matching the multiplexing subframe sequence number included in the target digital FM broadcast control instruction with the multiplexing subframe sequence number of each multiplexing subframe of the target identification service multiplexing frame. After filtering out the target multiplexing subframe, the digital FM emergency broadcast terminal can determine the emergency broadcast digital audio data included in the target multiplexing subframe as the target emergency broadcast digital audio data. Accordingly, after the digital FM emergency broadcast terminal obtains the target emergency broadcast digital audio data, it can decode and power amplify the target emergency broadcast digital audio data, and then output it to the external speaker for playback.

[0086] In an optional embodiment of the present invention, the demodulated signal is demultiplexed to obtain the digital FM broadcast control instruction and the emergency broadcast digital audio data, and may also include: checking the service multiplexing configuration table update number of the service multiplexing configuration table; when it is determined that the service multiplexing configuration table update number has changed, re-obtaining the updated service multiplexing configuration table; parsing the updated service multiplexing configuration table to obtain the digital FM broadcast control instruction and the emergency broadcast digital audio data.

[0087] In an embodiment of the present invention, when the digital FM emergency broadcast terminal demultiplexes the demodulated signal to obtain the digital FM broadcast control instructions and emergency broadcast digital audio data, it is necessary to check the service multiplexing configuration table's service multiplexing configuration table update sequence number. If the service multiplexing configuration table update sequence number changes, it indicates that the data transmitted by the service multiplexing frame has changed, such as the addition, deletion, or update of emergency broadcast digital audio data. Therefore, when it is determined that the service multiplexing configuration table update sequence number has changed, it is necessary to re-acquire the updated service multiplexing configuration table to obtain the new digital FM broadcast control instructions and emergency broadcast digital audio data, so as to timely obtain and accurately play the emergency broadcast digital audio data.

[0088] In an embodiment of the present invention, after receiving the digital FM modulated signal sent by the digital FM emergency broadcast adapter, the digital FM emergency broadcast terminal demultiplexes the signal to obtain the digital FM broadcast control instruction and the emergency broadcast digital audio data, and obtains the target emergency broadcast digital audio data from the emergency broadcast digital audio data according to the digital FM broadcast control instruction for playback, so that the digital FM emergency broadcast terminal can receive the digital FM broadcast control instruction at one FM frequency point, and select one audio from multiple channels of emergency broadcast digital audio data at the same frequency point as the target emergency broadcast digital audio data for playback. The above technical solution can solve the problems of low frequency resource utilization and transmission efficiency in the transmission of audio by the existing emergency broadcast service, improve the utilization of frequency resources when the emergency broadcast service transmits audio, and thereby improve the efficiency of the emergency broadcast service in transmitting audio.

[0089] Specific application scenarios

[0090] In order to more clearly describe the technical solution provided by the embodiment of the present invention, the embodiment of the present invention provides a method for a digital FM emergency broadcast terminal to process emergency broadcast service data. Figure 4 This is a flow chart of a method for a digital FM emergency broadcast terminal to process emergency broadcast service data provided by the second embodiment of the present invention. In a specific example, Figure 4 As shown, the process of the method for a digital FM emergency broadcast terminal to process emergency broadcast service data may include the following steps:

[0091] (1) Lock the designated FM frequency and receive the modulation signal through the digital FM emergency broadcast terminal.

[0092] (2) Channel demodulation and decoding to obtain the demodulated signal.

[0093] (3) Obtain a control multiplexing frame from the demodulated signal, parse the control multiplexing frame to obtain a control information table, and find the service multiplexing configuration table contained therein.

[0094] (4) Analyze the service multiplexing configuration table to obtain digital FM broadcast control instructions and emergency broadcast digital audio data.

[0095] (5) Obtain the digital FM broadcast control instruction for each service through the service multiplexing frame identifier of the digital FM broadcast control instruction.

[0096] (6) Parse the digital FM broadcast control command to obtain a list of broadcast target device numbers. If the current device resource code matches this list, read the broadcast audio data identification information corresponding to the emergency broadcast data of this device, including audio service multiplexing frame identification, multiplexing subframe sequence number, multiplexing subframe service identification and other data.

[0097] The multiplexing subframe service identifier can be used to distinguish whether the data included in the subframe is control instruction data or audio data, or to distinguish whether the subframe contains both control instruction data and audio data. Optionally, the multiplexing subframe service identifier can be configured for the service multiplexing frame, or it can be not configured for the service multiplexing frame. This embodiment of the present invention is not limited to this.

[0098] (7) Demultiplexing the emergency broadcast digital audio data multiplex stream according to the broadcast audio data identification information to obtain the target emergency broadcast digital audio data.

[0099] (8) Decode and amplify the target emergency broadcast digital audio data and output it to an external speaker.

[0100] (9) Check the update sequence number of the business multiplexing configuration table. If it changes, it means that the content of the business multiplexing configuration table has been updated. It is necessary to re-acquire and parse the new business multiplexing configuration table, and then repeat the above process.

[0101] The embodiment of the present invention utilizes a digital FM emergency broadcast terminal to receive a digital FM modulated signal generated by a digital FM emergency broadcast adapter that multiplexes emergency broadcast digital audio data and digital FM broadcast control instructions using a target multiplexing mode, further demodulates the digital FM modulated signal to obtain a demodulated signal, and demultiplexes the demodulated signal to obtain digital FM broadcast control instructions and emergency broadcast digital audio data; thereby, target emergency broadcast digital audio data is obtained from the emergency broadcast digital audio data according to the digital FM broadcast control instructions for playback, thereby solving the problems of low frequency resource utilization and transmission efficiency in audio transmission by existing emergency broadcast services, and can improve the utilization of frequency resources in audio transmission by emergency broadcast services, thereby improving the efficiency of audio transmission by emergency broadcast services.

[0102] In the technical solutions disclosed herein, the collection, storage, use, processing, transmission, provision and disclosure of user personal information are in compliance with the relevant laws and regulations and do not violate public order and good morals.

[0103] It should be noted that any arrangement and combination of the technical features in the above embodiments also falls within the protection scope of the present invention.

[0104] Example 3

[0105] Figure 5 Schematic diagram of a digital FM emergency broadcast terminal provided by the third embodiment of the present invention, such as Figure 5 As shown, the terminal includes: a signal demodulation module 310 and a main control module 320, the signal demodulation module 310 and the main control module 320 are communicatively connected, wherein:

[0106] The signal demodulation module 310 is used to receive the digital FM modulated signal sent by the digital FM emergency broadcast adapter; wherein the digital FM modulated signal is generated by the digital FM emergency broadcast adapter by multiplexing the emergency broadcast digital audio data and the digital FM broadcast control instruction using a target multiplexing mode; and the digital FM modulated signal is demodulated to obtain a demodulated signal.

[0107] Figure 6 This is a structural diagram of a digital FM emergency broadcast terminal provided by the third embodiment of the present invention. Figure 6 As shown, the signal demodulation module 310 ( Figure 6 (not shown) may include a tuner, and the digital FM emergency broadcast terminal may receive the digital FM modulated signal sent by the digital FM emergency broadcast adapter from the digital FM channel through the tuner. The signal demodulation module 310 may also include a demodulator, and the demodulator may demodulate the digital FM modulated signal and restore the modulated signal to the original signal. Specifically, the signal demodulation module 310 may receive digital FM modulated signals sent by multiple digital FM emergency broadcast adapters based on one FM frequency point, thereby realizing the reception of multiple digital audio data based on the emergency broadcast system. Accordingly, the digital FM modulated signal is generated by the digital FM emergency broadcast adapter by multiplexing the emergency broadcast digital audio data and the digital FM broadcast control instructions using a target multiplexing mode.

[0108] The main control module 320 is used to demultiplex the demodulated signal to obtain the digital FM broadcast control instruction and the emergency broadcast digital audio data; and obtain the target emergency broadcast digital audio data from the emergency broadcast digital audio data according to the digital FM broadcast control instruction for playback.

[0109] In an optional embodiment of the present invention, the main control module 320 may be specifically configured to: obtain a control multiplexing frame from the demodulated signal, parse the control multiplexing frame to obtain a control information table; parse the control information table to obtain a service multiplexing configuration table; and parse the service multiplexing configuration table to obtain the digital FM broadcast control instruction and the emergency broadcast digital audio data. There may be multiple digital FM broadcast control instructions.

[0110] In a specific example, Figure 6As shown, the main control module can obtain the control multiplexing frame from the demodulated signal. To obtain the corresponding emergency broadcast digital audio data, the digital FM emergency broadcast terminal can first parse the control multiplexing frame to obtain a control information table, parse the control information table to obtain a service multiplexing configuration table, and then parse the service multiplexing configuration table to obtain the digital FM broadcast control instructions and the emergency broadcast digital audio data. The number of digital FM broadcast control instructions can be multiple.

[0111] In an optional embodiment of the present invention, the main control module 320 can also be used to: parse each of the digital FM broadcast control instructions to obtain a broadcast target device number list corresponding to each of the digital FM broadcast control instructions; match the broadcast target device number list according to the local device resource code, and determine the target digital FM broadcast control instruction corresponding to the target broadcast target device number list according to the matching result; obtain the target emergency broadcast digital audio data according to the target digital FM broadcast control instruction for playback.

[0112] In a specific example, after the main control module 320 parses the service multiplexing configuration table and obtains the digital FM broadcast control instruction and the emergency broadcast digital audio data, the digital FM emergency broadcast terminal can parse each digital FM broadcast control instruction to obtain the target broadcast target device number list corresponding to each digital FM broadcast control instruction, thereby obtaining the local device resource code, and using the local device resource code to match the target broadcast target device number list. According to the matching result, the broadcast target device number list including the local device resource code is determined as the target broadcast target device number list. Further, the digital FM broadcast control instruction corresponding to the target broadcast target device number list is determined as the target digital FM broadcast control instruction, thereby obtaining the target emergency broadcast digital audio data for playback according to the target digital FM broadcast control instruction.

[0113] In an optional embodiment of the present invention, the main control module 320 can also be used to: obtain the broadcast audio data identification information of the target digital FM broadcast control instruction; wherein the broadcast audio data identification information includes the service multiplexing frame identification and multiplexing subframe sequence number of the audio data; demultiplex the emergency broadcast digital audio data according to the broadcast audio data identification information to obtain the target emergency broadcast digital audio data, and play it.

[0114] Specifically, when parsing the target digital FM broadcast control command, the digital FM emergency broadcast terminal can obtain broadcast audio data identification information, such as the service multiplexing frame identifier and multiplexing subframe sequence number, included in the target digital FM broadcast control command. Furthermore, based on the broadcast audio data identification information, the digital FM emergency broadcast terminal can retrieve the target emergency broadcast digital audio data from the emergency broadcast digital audio data for playback, thereby enabling playback of multiple emergency broadcast digital audio data channels on a single FM frequency.

[0115] In an optional embodiment of the present invention, the main control module 320 can also be used to: determine the target identification service multiplexing frame from each service multiplexing frame according to the service multiplexing frame identifier; determine the target multiplexing subframe from the target identification service multiplexing frame according to the multiplexing subframe sequence number; obtain the emergency broadcast digital audio data included in the target multiplexing subframe as the target emergency broadcast digital audio data; the digital FM emergency broadcast terminal can also include an audio decoder for decoding the target emergency broadcast digital audio data, and the digital FM emergency broadcast terminal can also include an audio power amplifier module for power amplifying the audio data decoded by the audio decoder and outputting it to an external speaker for playback.

[0116] Specifically, when the digital FM emergency broadcast terminal obtains the target emergency broadcast digital audio data from the emergency broadcast digital audio data according to the broadcast audio data identification information, it can first match the service multiplexing frame identification included in the target digital FM broadcast control instruction with the identification of each service multiplexing frame to determine the service multiplexing frame specified by the target digital FM broadcast control instruction as the target identification service multiplexing frame. Furthermore, the target multiplexing subframe specified by the target digital FM broadcast control instruction is determined by matching the multiplexing subframe sequence number included in the target digital FM broadcast control instruction with the multiplexing subframe sequence number of each multiplexing subframe of the target identification service multiplexing frame. After filtering out the target multiplexing subframe, the digital FM emergency broadcast terminal can determine the emergency broadcast digital audio data included in the target multiplexing subframe as the target emergency broadcast digital audio data. Accordingly, if Figure 6 As shown, the digital FM emergency broadcast terminal may also include an audio decoder for decoding the target emergency broadcast digital audio data. The digital FM emergency broadcast terminal may also include an audio power amplifier module for amplifying the audio data decoded by the audio decoder and outputting it to an external speaker for playback.

[0117] In an optional embodiment of the present invention, the main control module 320 can also be used to: check the service multiplexing configuration table update number of the service multiplexing configuration table; when it is determined that the service multiplexing configuration table update number has changed, re-acquire the updated service multiplexing configuration table; parse the updated service multiplexing configuration table to obtain the digital FM broadcast control instructions and the emergency broadcast digital audio data.

[0118] In an embodiment of the present invention, when the main control module 320 demultiplexes the demodulated signal to obtain the digital FM broadcast control instructions and emergency broadcast digital audio data, it is necessary to check the service multiplexing configuration table's service multiplexing configuration table update sequence number. If the service multiplexing configuration table update sequence number changes, it indicates that the data transmitted by the service multiplexing frame has changed, such as the addition, deletion, or update of emergency broadcast digital audio data. Therefore, when it is determined that the service multiplexing configuration table update sequence number has changed, it is necessary to re-acquire and parse the updated service multiplexing configuration table to obtain the new digital FM broadcast control instructions and emergency broadcast digital audio data, so as to timely obtain and accurately play the emergency broadcast digital audio data.

[0119] In an optional embodiment of the present invention, the digital FM emergency broadcast adapter can also be used to: obtain the emergency broadcast ID, start and end time, broadcast type and level, broadcast target device number list and broadcast audio data identification information of the digital FM broadcast control instruction; assign values ​​to the corresponding fields of the digital FM broadcast control instruction according to the emergency broadcast ID, start and end time, broadcast type and level, broadcast target device number list and broadcast audio data identification information to obtain the digital FM broadcast control instruction; wherein the broadcast audio data identification information includes the service multiplexing frame identifier and multiplexing subframe sequence number of the audio data.

[0120] Specifically, when generating digital FM broadcast control instructions, the digital FM emergency broadcast adapter needs to extract the key information required to generate the digital FM broadcast control instructions, namely the emergency broadcast ID, start and end time, broadcast type and level, broadcast target device number list, corresponding audio data service multiplexing frame identifier and multiplexing subframe sequence number and other information, and then assign values ​​to the fields corresponding to the digital FM broadcast control instructions based on the above extracted information to generate the final required digital FM broadcast control instructions, thereby realizing the reception of digital FM broadcast control instructions at a FM frequency point.

[0121] In an optional embodiment of the present invention, the digital FM emergency broadcast adapter can also be used to: determine the service multiplexing payload structure of the service multiplexing frame corresponding to the emergency broadcast digital audio data and the digital FM broadcast control instruction according to the target multiplexing mode; and generate the service multiplexing frame header of the service multiplexing frame according to the service multiplexing frame identifier and the multiplexing subframe information.

[0122] In an embodiment of the present invention, after determining a target multiplexing mode for emergency broadcast digital audio data and digital FM broadcast control instructions, the digital FM emergency broadcast adapter can multiplex the emergency broadcast digital audio data and digital FM broadcast control instructions within a multiplexing subframe according to the specific multiplexing method specified by the target multiplexing mode, thereby obtaining a service multiplexing payload structure of a service multiplexing frame corresponding to the emergency broadcast digital audio data and digital FM broadcast control instructions. Furthermore, the digital FM emergency broadcast adapter can generate a service multiplexing frame header for the service multiplexing frame by combining service multiplexing frame identifiers, multiplexing subframe number, multiplexing subframe length, and other multiplexing subframe information.

[0123] In an optional embodiment of the present invention, the digital FM emergency broadcast adapter can also be used to: determine the number of target service multiplexing frames based on the number of the emergency broadcast digital audio data and the digital FM broadcast control instructions; wherein each target service multiplexing frame includes a multiplexing subframe; and obtain the service multiplexing payload structure of the service multiplexing frame by multiplexing each of the emergency broadcast digital audio data and the digital FM broadcast control instructions through the multiplexing subframes of each target service multiplexing frame.

[0124] In an embodiment of the present invention, the target multiplexing mode can be an independent multiplexing mode for emergency broadcast digital audio data and digital FM broadcast control instructions. That is, the digital FM emergency broadcast adapter can determine the number of target service multiplexing frames based on the number of emergency broadcast digital audio data and digital FM broadcast control instructions. The target service multiplexing frame can use a multiplexing subframe to multiplex the emergency broadcast digital audio data or digital FM broadcast control instructions, thereby multiplexing each emergency broadcast digital audio data and digital FM broadcast control instruction through the multiplexing subframes of each target service multiplexing frame, thereby obtaining a service multiplexing payload structure of the service multiplexing frame.

[0125] In an optional embodiment of the present invention, the digital FM emergency broadcast adapter can also be used to: determine a target service multiplexing frame corresponding to the emergency broadcast digital audio data and the digital FM broadcast control instructions when it is determined that the sum of the number of the emergency broadcast digital audio data and the number of the digital FM broadcast control instructions is less than or equal to the set multiplexing sub-frame number threshold; the number of multiplexing sub-frames included in the target service multiplexing frame is less than or equal to the set multiplexing sub-frame number threshold; and obtain the service multiplexing payload structure of the service multiplexing frame by multiplexing each of the emergency broadcast digital audio data and the digital FM broadcast control instructions through each multiplexing sub-frame of the target service multiplexing frame.

[0126] In an embodiment of the present invention, the target multiplexing mode can also be a centralized multiplexing mode of emergency broadcast digital audio data and digital FM broadcast control instructions. The centralized multiplexing mode can also have two different multiplexing scenarios. Specifically, before the digital FM emergency broadcast adapter multiplexes the emergency broadcast digital audio data and the digital FM broadcast control instructions using the centralized multiplexing mode, it can first be determined whether the sum of the number of emergency broadcast digital audio data and the number of digital FM broadcast control instructions exceeds the maximum number of multiplexing subframes that can be included in a target service multiplexing frame. If it is determined that the sum of the number of emergency broadcast digital audio data and the number of digital FM broadcast control instructions is less than or equal to the set multiplexing subframe number threshold, it indicates that the sum of the number of emergency broadcast digital audio data and the number of digital FM broadcast control instructions does not exceed the maximum number of multiplexing subframes that can be included in a target service multiplexing frame. In this case, the digital FM emergency broadcast adapter can configure only one target service multiplexing frame corresponding to the emergency broadcast digital audio data and the digital FM broadcast control command, and multiplex each emergency broadcast digital audio data and digital FM broadcast control command into each multiplexing subframe of the target service multiplexing frame, thereby obtaining a service multiplexing payload structure of the service multiplexing frame. In other words, the digital FM broadcast control command and N channels of emergency broadcast digital audio data are multiplexed into each multiplexing subframe of a target service multiplexing frame.

[0127] In an optional embodiment of the present invention, the digital FM emergency broadcast adapter can also be used to: determine a plurality of target service multiplexing frames corresponding to the emergency broadcast digital audio data and the digital FM broadcast control instructions when it is determined that the sum of the number of the emergency broadcast digital audio data and the number of the digital FM broadcast control instructions is greater than a set multiplexing sub-frame number threshold; the number of multiplexing sub-frames included in the target service multiplexing frame is less than or equal to the set multiplexing sub-frame number threshold; and obtain the service multiplexing payload structure of the service multiplexing frame by multiplexing the emergency broadcast digital audio data and the digital FM broadcast control instructions through each multiplexing sub-frame of the plurality of target service multiplexing frames.

[0128] In an embodiment of the present invention, when a digital FM emergency broadcast adapter multiplexes emergency broadcast digital audio data and digital FM broadcast control instructions using a centralized multiplexing mode, if the sum of the number of emergency broadcast digital audio data and the number of digital FM broadcast control instructions is determined to be greater than a set multiplexing subframe number threshold, this indicates that the sum of the number of emergency broadcast digital audio data and the number of digital FM broadcast control instructions exceeds the maximum number of multiplexing subframes that can be included in a target service multiplexing frame. Therefore, the digital FM emergency broadcast adapter needs to configure multiple target service multiplexing frames corresponding to the emergency broadcast digital audio data and digital FM broadcast control instructions, and multiplex each emergency broadcast digital audio data and digital FM broadcast control instruction through each multiplexing subframe of the multiple target service multiplexing frames, thereby obtaining a service multiplexing payload structure of the service multiplexing frame.

[0129] In the embodiment of the present invention, the signal demodulation module in the digital FM emergency broadcast terminal receives the digital FM modulated signal generated by the digital FM emergency broadcast adapter using the target multiplexing mode to multiplex the emergency broadcast digital audio data and the digital FM broadcast control instruction, further demodulates the digital FM modulated signal to obtain a demodulated signal, and demultiplexes the demodulated signal through the main control module to obtain the digital FM broadcast control instruction and the emergency broadcast digital audio data; thereby, the target emergency broadcast digital audio data is obtained from the emergency broadcast digital audio data according to the digital FM broadcast control instruction for playback, solving the problems of low frequency resource utilization and transmission efficiency in the existing emergency broadcast service when transmitting audio, and can improve the utilization of frequency resources when the emergency broadcast service transmits audio, thereby improving the efficiency of the emergency broadcast service in transmitting audio.

[0130] Example 4

[0131] Figure 7 Schematic diagram of an emergency broadcast service data processing device provided by the fourth embodiment of the present invention. Figure 7 As shown, the device includes: a digital FM modulation signal receiving module 410, a digital FM instruction data acquisition module 420 and a digital audio data playing module 430, wherein:

[0132] The digital FM modulation signal receiving module 410 is used to receive the digital FM modulation signal sent by the digital FM emergency broadcast adapter; wherein, the digital FM modulation signal is generated by the digital FM emergency broadcast adapter by multiplexing the emergency broadcast digital audio data and the digital FM broadcast control instruction using the target multiplexing mode.

[0133] The digital FM instruction data acquisition module 420 is used to demodulate the digital FM modulation signal to obtain a demodulated signal, and demultiplex the demodulated signal to obtain the digital FM broadcast control instruction and the emergency broadcast digital audio data.

[0134] The digital audio data playing module 430 is configured to obtain target emergency broadcast digital audio data from the emergency broadcast digital audio data according to the digital FM broadcast control instruction and play the target emergency broadcast digital audio data.

[0135] The embodiment of the present invention utilizes a digital FM emergency broadcast terminal to receive a digital FM modulated signal generated by a digital FM emergency broadcast adapter that multiplexes emergency broadcast digital audio data and digital FM broadcast control instructions using a target multiplexing mode, further demodulates the digital FM modulated signal to obtain a demodulated signal, and demultiplexes the demodulated signal to obtain digital FM broadcast control instructions and emergency broadcast digital audio data; thereby, target emergency broadcast digital audio data is obtained from the emergency broadcast digital audio data according to the digital FM broadcast control instructions for playback, thereby solving the problems of low frequency resource utilization and transmission efficiency in audio transmission by existing emergency broadcast services, and can improve the utilization of frequency resources in audio transmission by emergency broadcast services, thereby improving the efficiency of audio transmission by emergency broadcast services.

[0136] In an optional embodiment of the present invention, the digital FM instruction data acquisition module 420 is further configured to: acquire a control multiplexing frame from the demodulated signal, parse the control multiplexing frame to obtain a control information table; parse the control information table to obtain a service multiplexing configuration table; and parse the service multiplexing configuration table to obtain the digital FM broadcast control instruction and the emergency broadcast digital audio data. There may be multiple digital FM broadcast control instructions.

[0137] In an optional embodiment of the present invention, the digital audio data playback module 430 is also used to: parse each of the digital FM broadcast control instructions to obtain a list of broadcast target device numbers corresponding to each of the digital FM broadcast control instructions; match the broadcast target device number list according to the local device resource code, and determine the target digital FM broadcast control instruction corresponding to the target broadcast target device number list according to the matching result; and obtain the target emergency broadcast digital audio data for playback according to the target digital FM broadcast control instruction.

[0138] In an optional embodiment of the present invention, the digital audio data playback module 430 is also used to: obtain the broadcast audio data identification information of the target digital FM broadcast control instruction; wherein the broadcast audio data identification information includes the service multiplexing frame identification and multiplexing subframe sequence number of the audio data; demultiplex the emergency broadcast digital audio data according to the broadcast audio data identification information to obtain the target emergency broadcast digital audio data, and play it.

[0139] In an optional embodiment of the present invention, the digital audio data playback module 430 is also used to: determine the target identification service multiplexing frame from each service multiplexing frame according to the service multiplexing frame identifier; determine the target multiplexing subframe from the target identification service multiplexing frame according to the multiplexing subframe sequence number; obtain the emergency broadcast digital audio data included in the target multiplexing subframe as the target emergency broadcast digital audio data; decode and power amplify the target emergency broadcast digital audio data, and then output it to an external speaker for playback.

[0140] In an optional embodiment of the present invention, the digital FM instruction data acquisition module 420 is also used to: check the service multiplexing configuration table update number of the service multiplexing configuration table; when it is determined that the service multiplexing configuration table update number has changed, re-acquire the updated service multiplexing configuration table; parse the updated service multiplexing configuration table to obtain the digital FM broadcast control instruction and the emergency broadcast digital audio data.

[0141] In an optional embodiment of the present invention, the digital FM emergency broadcast adapter is also used to: obtain the emergency broadcast ID, start and end time, broadcast type and level, broadcast target device number list and broadcast audio data identification information of the digital FM broadcast control instruction; assign values ​​to the corresponding fields of the digital FM broadcast control instruction according to the emergency broadcast ID, start and end time, broadcast type and level, broadcast target device number list and broadcast audio data identification information to obtain the digital FM broadcast control instruction; wherein the broadcast audio data identification information includes the service multiplexing frame identifier and multiplexing subframe sequence number of the audio data.

[0142] In an optional embodiment of the present invention, the digital FM emergency broadcast adapter is also used to: determine the service multiplexing payload structure of the service multiplexing frame corresponding to the emergency broadcast digital audio data and the digital FM broadcast control instruction according to the target multiplexing mode; and generate the service multiplexing frame header of the service multiplexing frame according to the service multiplexing frame identifier and the multiplexing subframe information.

[0143] In an optional embodiment of the present invention, the digital FM emergency broadcast adapter is also used to: determine the number of target service multiplexing frames based on the number of the emergency broadcast digital audio data and the digital FM broadcast control instructions; wherein each target service multiplexing frame includes a multiplexing subframe; and obtain the service multiplexing payload structure of the service multiplexing frame by multiplexing each of the emergency broadcast digital audio data and the digital FM broadcast control instructions through the multiplexing subframes of each target service multiplexing frame.

[0144] In an optional embodiment of the present invention, the digital FM emergency broadcast adapter is further used to: determine a target service multiplexing frame corresponding to the emergency broadcast digital audio data and the digital FM broadcast control instructions when it is determined that the sum of the number of the emergency broadcast digital audio data and the number of the digital FM broadcast control instructions is less than or equal to the set multiplexing sub-frame number threshold; the number of multiplexing sub-frames included in the target service multiplexing frame is less than or equal to the set multiplexing sub-frame number threshold; and obtain the service multiplexing payload structure of the service multiplexing frame by multiplexing each of the emergency broadcast digital audio data and the digital FM broadcast control instructions through each multiplexing sub-frame of the target service multiplexing frame.

[0145] In an optional embodiment of the present invention, the digital FM emergency broadcast adapter is further used to: determine a plurality of target service multiplexing frames corresponding to the emergency broadcast digital audio data and the digital FM broadcast control instructions when it is determined that the sum of the number of the emergency broadcast digital audio data and the number of the digital FM broadcast control instructions is greater than a set multiplexing subframe number threshold; the number of multiplexing subframes included in the target service multiplexing frame is less than or equal to the set multiplexing subframe number threshold; and obtain the service multiplexing payload structure of the service multiplexing frame by multiplexing the emergency broadcast digital audio data and the digital FM broadcast control instructions through each multiplexing subframe of the plurality of target service multiplexing frames.

[0146] The above-mentioned emergency broadcast service data processing device can execute the emergency broadcast service data processing method provided by any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method. For technical details not fully described in this embodiment, please refer to the emergency broadcast service data processing method provided by any embodiment of the present invention.

[0147] Since the emergency broadcast service data processing device introduced above is a device that can execute the emergency broadcast service data processing method in the embodiment of the present invention, based on the emergency broadcast service data processing method introduced in the embodiment of the present invention, technical personnel in this field can understand the specific implementation method of the emergency broadcast service data processing device of this embodiment and its various variations, so how the emergency broadcast service data processing device implements the emergency broadcast service data processing method in the embodiment of the present invention will not be introduced in detail here. As long as technical personnel in this field implement the device adopted by the emergency broadcast service data processing method in the embodiment of the present invention, it falls within the scope of protection to be protected by this application.

[0148] Example 5

[0149] In some embodiments, the emergency broadcast service data processing method may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit. In some embodiments, part or all of the computer program may be loaded and / or installed onto the digital FM emergency broadcast adapter via a ROM and / or a communication unit. When the computer program is loaded into the RAM and executed by the processor of the digital FM emergency broadcast adapter, one or more steps of the emergency broadcast service data processing method described above may be performed. Alternatively, in other embodiments, the processor may be configured to execute the emergency broadcast service data processing method by any other appropriate means (e.g., by means of firmware).

[0150] Optionally, the emergency broadcast service data processing method may include: receiving a digital FM modulated signal sent by a digital FM emergency broadcast adapter; wherein the digital FM modulated signal is generated by the digital FM emergency broadcast adapter by multiplexing the emergency broadcast digital audio data and the digital FM broadcast control instruction using a target multiplexing mode; demodulating the digital FM modulated signal to obtain a demodulated signal, and demultiplexing the demodulated signal to obtain the digital FM broadcast control instruction and the emergency broadcast digital audio data; obtaining target emergency broadcast digital audio data from the emergency broadcast digital audio data according to the digital FM broadcast control instruction for playback.

[0151] Various embodiments of the systems and techniques described herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), system-on-chip systems (SOCs), programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include being implemented in one or more computer programs that are executable and / or interpreted on a programmable system that includes at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0152] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when the computer program is executed by the processor, the functions / operations specified in the flowcharts and / or block diagrams are implemented. The computer program may be executed entirely on the machine, partially on the machine, as a stand-alone software package, partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0153] In the context of the present invention, computer-readable storage media can be tangible media that can contain or store a computer program for use with an instruction execution system, device or equipment or used in combination with an instruction execution system, device or equipment. Computer-readable storage media can include but are not limited to electronic, magnetic, optical, electromagnetic, infrared or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, computer-readable storage media can be machine-readable signal media. More specific examples of machine-readable storage media can include electrical connections based on one or more lines, portable computer disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memory), optical fibers, portable compact disk read-only memories (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0154] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and the input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0155] The systems and techniques described herein can be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0156] A computing system may include clients and servers. The clients and servers are typically remote from each other and typically interact via a communication network. This client-server relationship arises through computer programs running on the respective computers, creating a client-server relationship. The server may be a cloud server, also known as a cloud computing server or cloud host. This server is a hosting product within the cloud computing service ecosystem that addresses the management difficulties and limited scalability of traditional physical hosting and VPS services.

[0157] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in this disclosure can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved. This is not a limitation herein.

[0158] The above specific embodiments do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure shall be included within the scope of protection of this disclosure.

Claims

1. A method for processing emergency broadcast service data, characterized in that: Applied to digital FM emergency broadcast terminal, including: Receiving a digital FM modulation signal sent by a digital FM emergency broadcast adapter; wherein the digital FM modulation signal is generated by the digital FM emergency broadcast adapter multiplexing the emergency broadcast digital audio data and the digital FM broadcast control instruction using a target multiplexing mode; Demodulating the digital FM modulation signal to obtain a demodulated signal, and demultiplexing the demodulated signal to obtain the digital FM broadcast control instruction and the emergency broadcast digital audio data; According to the digital FM broadcast control instruction, target emergency broadcast digital audio data is acquired from the emergency broadcast digital audio data for playing.

2. The method according to claim 1, characterized in that The demultiplexing process of the demodulated signal to obtain the digital FM broadcast control instruction and the emergency broadcast digital audio data includes: Acquire a control multiplexing frame from the demodulated signal, and parse the control multiplexing frame to obtain a control information table; Parsing the control information table to obtain a service multiplexing configuration table; The service multiplexing configuration table is parsed to obtain the digital FM broadcast control instruction and the emergency broadcast digital audio data.

3. The method according to claim 1, characterized in that The number of the digital FM broadcast control instructions is multiple; the acquiring target emergency broadcast digital audio data from the emergency broadcast digital audio data according to the digital FM broadcast control instructions for playing includes: Parsing each of the digital FM broadcast control instructions to obtain a list of broadcast target device numbers corresponding to each of the digital FM broadcast control instructions; Matching the broadcast target device number list according to the local device resource code, and determining the target digital FM broadcast control instruction corresponding to the target broadcast target device number list according to the matching result; The target emergency broadcast digital audio data is acquired and played according to the target digital FM broadcast control instruction.

4. The method according to claim 3, characterized in that: The step of acquiring the target emergency broadcast digital audio data for playback according to the target digital FM broadcast control instruction includes: Acquire the broadcast audio data identification information of the target digital FM broadcast control instruction; wherein the broadcast audio data identification information includes the service multiplexing frame identification and multiplexing subframe sequence number of the audio data; The target emergency broadcast digital audio data is demultiplexed from the emergency broadcast digital audio data according to the broadcast audio data identification information, and is played.

5. The method according to claim 4, characterized in that The step of acquiring the target emergency broadcast digital audio data from the emergency broadcast digital audio data according to the broadcast audio data identification information for playing includes: Determining a target identification service multiplexing frame from each service multiplexing frame according to the service multiplexing frame identification; Determining a target multiplexing subframe from the target identification service multiplexing frame according to the multiplexing subframe sequence number; Acquire the emergency broadcast digital audio data included in the target multiplexing subframe as the target emergency broadcast digital audio data; After decoding and power amplification processing of the target emergency broadcast digital audio data, the data is output to an external speaker for playing.

6. The method according to claim 2, characterized in that The method further comprises: Check the service multiplexing configuration table update sequence number of the service multiplexing configuration table; When it is determined that the update sequence number of the service multiplexing configuration table has changed, re-obtaining an updated service multiplexing configuration table; The updated service multiplexing configuration table is parsed to obtain the digital FM broadcast control instruction and the emergency broadcast digital audio data.

7. The method according to claim 1, characterized in that The digital FM emergency broadcast adapter is also used for: Obtaining the emergency broadcast ID, start and end time, broadcast type and level, broadcast target device number list and broadcast audio data identification information of the digital FM broadcast control instruction; Assigning values ​​to corresponding fields of the digital FM broadcast control instruction according to the emergency broadcast ID, start and end time, broadcast type and level, broadcast target device number list, and broadcast audio data identification information to obtain the digital FM broadcast control instruction; The broadcast audio data identification information includes a service multiplexing frame identification and a multiplexing subframe sequence number of the audio data.

8. The method according to claim 1, characterized in that The digital FM emergency broadcast adapter is also used for: Determine the service multiplexing payload structure of the service multiplexing frame corresponding to the emergency broadcast digital audio data and the digital FM broadcast control instruction according to the target multiplexing mode; A service multiplexing frame header of the service multiplexing frame is generated according to the service multiplexing frame identifier and the multiplexing subframe information.

9. The method according to claim 1, characterized in that: The digital FM emergency broadcast adapter is also used for: Determine the number of target service multiplexing frames according to the number of the emergency broadcast digital audio data and the digital FM broadcast control instructions; wherein each of the target service multiplexing frames includes a multiplexing subframe; The emergency broadcast digital audio data and the digital FM broadcast control instructions are multiplexed respectively through the multiplexing subframes of each target service multiplexing frame to obtain the service multiplexing payload structure of the service multiplexing frame.

10. The method according to claim 1, characterized in that The digital FM emergency broadcast adapter is also used for: In the case where it is determined that the sum of the number of the emergency broadcast digital audio data and the number of the digital FM broadcast control instructions is less than or equal to the set multiplexed subframe number threshold, determine a target service multiplexed frame corresponding to the emergency broadcast digital audio data and the digital FM broadcast control instruction; the number of multiplexed subframes included in the target service multiplexed frame is less than or equal to the set multiplexed subframe number threshold; The emergency broadcast digital audio data and the digital FM broadcast control instructions are multiplexed respectively through each multiplexing subframe of the target service multiplexing frame to obtain the service multiplexing payload structure of the service multiplexing frame.

11. The method according to claim 1, characterized in that: The digital FM emergency broadcast adapter is also used for: In the case where it is determined that the sum of the number of the emergency broadcast digital audio data and the number of the digital FM broadcast control instructions is greater than the set multiplexed subframe number threshold, a plurality of target service multiplexed frames corresponding to the emergency broadcast digital audio data and the digital FM broadcast control instructions are determined; the number of multiplexed subframes included in the target service multiplexed frame is less than or equal to the set multiplexed subframe number threshold; The emergency broadcast digital audio data and the digital FM broadcast control instructions are multiplexed respectively through each multiplexing subframe of a plurality of target service multiplexing frames to obtain a service multiplexing payload structure of the service multiplexing frame.

12. A digital FM emergency broadcast terminal, characterized in that: It includes a signal demodulation module and a main control module, and the signal demodulation module is communicatively connected with the main control module; wherein: The signal demodulation module is used to receive a digital FM modulated signal sent by a digital FM emergency broadcast adapter; wherein the digital FM modulated signal is generated by the digital FM emergency broadcast adapter multiplexing the emergency broadcast digital audio data and the digital FM broadcast control instruction using a target multiplexing mode; the digital FM modulated signal is demodulated to obtain a demodulated signal, The main control module is used to demultiplex the demodulated signal to obtain the digital FM broadcast control instruction and the emergency broadcast digital audio data; and obtain the target emergency broadcast digital audio data from the emergency broadcast digital audio data according to the digital FM broadcast control instruction for playback.

13. An emergency broadcast service data processing device, characterized in that: Configured in digital FM emergency broadcast terminal, including: A digital FM modulation signal receiving module is used to receive a digital FM modulation signal sent by a digital FM emergency broadcast adapter; wherein the digital FM modulation signal is generated by the digital FM emergency broadcast adapter multiplexing the emergency broadcast digital audio data and the digital FM broadcast control instruction using a target multiplexing mode; A digital FM instruction data acquisition module is used to demodulate the digital FM modulation signal to obtain a demodulated signal, and demultiplex the demodulated signal to obtain the digital FM broadcast control instruction and the emergency broadcast digital audio data; The digital audio data playing module is used to obtain target emergency broadcast digital audio data from the emergency broadcast digital audio data for playing according to the digital FM broadcast control instruction.

14. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the emergency broadcast service data processing method described in any one of claims 1-11 when executed.

15. A computer program product comprising a computer program / instructions, wherein: When the computer program / instructions are executed by a processor, the emergency broadcast service data processing method described in any one of claims 1-11 is implemented.

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