JP7106730B2 - Administrative radio system for disaster prevention, its master station device, slave station device, and method for broadcasting different types of content at the same time by region - Google Patents

Description

The embodiments of the present invention relate to a disaster prevention administrative radio system, a master station device, a slave station device, and a method of broadcasting different types of contents simultaneously for each district.

Conventionally, in disaster prevention administrative radio systems, for example, disaster prevention broadcasts and various notifications are broadcast to local residents from a master station device installed in a municipal government building. Send to When each slave station device receives a voice signal from the master station, the slave station device performs loudspeaker output of the voice.

Specifically, for example, at a fixed time every evening, instead of the time signal, a predetermined musical piece (sound source) such as "Yuyake Koyaki" is broadcast.

However, there have been many mergers of municipalities due to the Great Heisei Consolidation of recent years. Audio broadcasting will be carried out for each district through the slave station equipment of each district. At this time, the same musical piece (sound source) is broadcast simultaneously in all districts.

Specifically, for example, "Hometown ○" in the former A municipality (district a) before the merger, "House ○" in the former B municipality (district b), and "Yuyake Koyaki ○" in the former C municipality (district c) ", but when it is integrated into the disaster prevention administrative radio system of the former A municipality (district a) after the merger, all districts (a, b, c) will broadcast the voice of "Furusako ○" all at once. Broadcast takes place.

JP 2009-296205 A JP 2007-060715 A JP 2015-082688 A

In the above-mentioned conventional disaster prevention administrative radio system, for example, when performing a fixed time audio broadcast every day, the same audio broadcast is performed all at once from one master station device through the slave station devices in each district. There will be areas where the music (sound source) of the 1 and the music (sound source) of the merged audio broadcast are different. In such an area, the music (sound source) that the residents were familiar with in the past may one day start playing unfamiliar music (sound source), which may cause discomfort and confusion among the residents.

The present invention has been devised in view of such problems. It is an object of the present invention to provide a heterogeneous content broadcasting method.

A disaster prevention administrative radio system according to the present invention includes a master station device and a plurality of slave station devices, and is a disaster prevention administrative radio system that performs scheduled broadcasting to a plurality of set broadcast target areas,
The parent station device includes child station designating means for designating the child station device for scheduled broadcasting, and a memory in which music data to be transmitted to the child station device designated by the child station designating means is registered. transmitting means for transmitting a broadcast control signal for a scheduled broadcast containing designation information designating an area;
The slave station device has a plurality of memory areas for storing music data as a broadcast sound source, and the memory unit registers the music data in a predetermined memory area determined for each of the broadcast target areas; receiving means for receiving a broadcast control signal including the designation information of the memory area, which is transmitted by the transmission means of the master station apparatus; A sound source output means for outputting music data registered in the memory area of the memory unit.

According to the present invention, it is possible to perform audio broadcasting of different sound sources for each district at the same time.

Schematic which shows the whole structure of the disaster-prevention administrative radio system of embodiment. FIG. 2 is a block diagram showing the configuration of an electronic circuit of a radio master station device 10 and radio slave station devices 20 (20a to 20e) in the disaster prevention administrative radio system. 4 is a flowchart showing master station processing (data registration control processing) of the wireless master station device 10 and corresponding child station processing (data registration processing) of the wireless slave station devices 20 (20a to 20e) in the disaster prevention administrative wireless system. 4 is a flowchart showing master station processing (broadcast control processing) of the wireless master station device 10 and slave station processing (broadcast processing) of the wireless slave station devices 20 (20a to 20e) corresponding thereto in the disaster prevention administrative wireless system.

Hereinafter, a disaster prevention administrative radio system, a master station device, a slave station device, and a method for simultaneously broadcasting heterogeneous contents for each district according to the embodiments will be described with reference to the drawings.

FIG. 1 is a schematic diagram showing the overall configuration of the disaster prevention administrative radio system of the embodiment.

This disaster prevention administrative radio system comprises, for example, a radio master station device 10 installed in an administrative office building 40 of a municipality and a plurality of radio slave station devices 20 installed dispersedly in a broadcast target area (A district) of the municipality. Prepare. The plurality of wireless slave station devices 20 include outdoor sound reinforcement slave station devices 20a and 20c, door-to-door slave station devices 20b and 20d, and a retransmission slave station device 20e.

In this embodiment, it is assumed that the broadcast target area (A district) is an area where former municipalities a district and b district have been integrated by merger of municipalities.

The radio master station device 10 is driven by a power supply voltage obtained by converting a commercial power supply of AC 100V from a lightning transformer T to a DC power supply through a DC power supply E, and is installed at an operation console 41 in the government building 40 or at a fire station, branch office, etc. 42. It operates according to the operation of the remote control device 43 received.

A map display device 44 is provided on the console 41 of the radio master station device 10 . The map display device 44 displays, for example, a map of the broadcast target area (District A) and various information and situations in the area.

Each radio slave station device 20 is driven by a commercial power supply of AC 100V. Each radio slave station device 20 receives either the broadcast wave Ws transmitted from the radio master station device 10 or the relay station 30 or the retransmission wave Wrs transmitted from the retransmission slave station device 20e. It has a loudspeaker SP which operates and outputs a sound source (sound) to be broadcasted when a broadcast control signal from the radio master station device 10 is received. Further, the radio master station device 10, each radio slave station device 20, and the relay station 30 have an antenna AT for transmitting, receiving, or transmitting/receiving radio waves.

The relay station 30 receives and relays the relay wave Wc transmitted from the radio master station device 10 and transmits a broadcast wave Ws to each of the radio slave station devices 20 . The broadcast wave Ws and the relay wave Wc both use different channels in a frequency band of 60 MHz, for example.

Then, the radio master station device 10 individually designates each radio slave station device 20 (20a to 20e) in the broadcast target area (area A), or designates them in groups for each area a/b, Alternatively, a function of specifying all at once and distributing and registering sound source (audio) data for audio broadcasting from the specified wireless slave station device 20 to the specified wireless slave station device 20 (data registration control mode) , Each wireless slave station device 20 (20a to 20e) in the broadcast target area (A district) is designated collectively, designated by a group for each district a/b, or individually designated, and the designation It has a function (broadcast control mode) for reproducing (audio broadcasting) the sound source (sound) registered in the wireless slave station device 20 with respect to the wireless slave station device 20 .

Further, each of the radio slave station devices 20 (20a to 20e) receives a data registration control signal designating its own station from the radio master station device 10, and distributes data (sound source) included in the data registration control signal. , and a function of receiving a broadcast control signal designating its own station from the radio master station device 10 and reproducing (audio broadcasting) distribution data (sound source) registered in its own station.

The radio master station device 10 and each of the radio slave station devices 20 (20a to 20e) are connected to an emergency power source (not shown) or the master station device 10 and the slave station devices in the event of a power failure of the commercial power supply (AC100V). It is driven by a storage battery that the device 20 has.

FIG. 2 is a block diagram showing the configuration of the electronic circuits of the radio master station device 10 and the radio slave station devices 20 (20a to 20e) in the disaster prevention administrative radio system.

The radio master station device 10 has a control section (CPU) 11 as a computer.

The control section 11 controls the operation of each section of the circuit according to a parent station control program 12a pre-stored in the memory section 12. FIG. The master station control program 12a receives an input signal corresponding to a user's operation from the operation unit 14 (operating console 41, remote control device 43), a clock signal at a preset time (fixed time), or the above-mentioned It is activated in response to a signal received from the wireless slave station device 20 .

The memory unit 12, the transmission/reception unit 13, and the operation unit 14 are connected to the control unit 11, and the display unit 15 (including the map display device 44) is also connected.

This radio master station device 10 is driven by a power supply unit 16 (including a lightning-resistant transformer T and a DC power supply E) connected to a commercial power supply (AC 100V), and the power supply unit 16 operates for 48 hours or 72 hours (for example, 48 hours or 72 hours) in the event of a power failure. It has a storage battery 16a capable of securing a power supply (hour operating time). The power supply unit 16 can receive power supply from an emergency power generator (not shown) of the administrative office building 40 .

The transmitting/receiving section 13 has a modulation/demodulation section 13a. In the data registration control mode, the modulation/demodulation unit 13a modulates the data registration control signal generated by the control unit 11 and transmits the modulated data registration control signal to the radio slave station device 20 from the antenna AT. In the broadcast control mode, the broadcast control signal generated by the control unit 11 is modulated, transmitted from the antenna AT to the radio slave station device 20, and received from the radio slave station device 20 via the antenna AT. The received broadcast response signal is demodulated and output to the control section 11 .

In addition to storing the parent station control program 12a, the memory unit 12 stores child station identification data (collective/group/individual) 12b and child station memory area designation data (areas 1, 2, 3, . . . ) 12c. , distribution data (sound source A/B/C/...) 12d and the like are stored.

As the slave station identification data (collective/group/individual) 12b, the slave station identification numbers of the wireless slave station devices 20 (20a to 20e) in the broadcast target area (area A) are specified collectively. data (slave station identification number (collective)), data for specifying groups such as a district / b district (slave station identification number (a district / b district)), and data for specifying individually (slave station identification number (20a/20b/.../20e)) is stored.

As the slave station memory area specification data (areas 1, 2, 3, . . . ) 12c, the sound source (sound) to be broadcast, which is commonly provided in each wireless slave station device 20 (20a to 20e), is registered. data (memory area numbers 1, 2, 3, . . . ) for designating one of a plurality of memory areas in the distribution data memory 22c.

As the distribution data (sound sources A/B/C/...) 12d, a plurality of sound sources (sounds) for performing voice broadcasting of different sound sources (sounds) for, for example, districts a/b within the broadcast target area (district A). Types of sound source data (for example, sound source A; hometown ◯/sound source B; house ◯/sound source C; sunset small grill ◯) are stored.

In the wireless master station device 10 configured as described above, the control unit 11 controls the operation of each circuit part according to the instructions written in the master station control program 12a, and software and hardware operate in cooperation. By doing so, various functions (data registration control function/broadcast control function/data deletion function, etc.), which will be described later in the description of operation, are realized.

The radio slave station device 20 (20a to 20e) has a control section (CPU) 21 as a computer.

The control section 21 controls the operation of each section of the circuit according to a child station control program 22a stored in the memory section 22 in advance. The slave station control program 22a is activated in response to a signal (data registration control signal/broadcast control signal/data deletion control signal, etc.) received from the radio master station apparatus 10 by the transmitting/receiving section 23. FIG.

The memory unit 22 and the transmission/reception unit 23 are connected to the control unit 21 , and a speaker SP is connected via an audio amplification unit 24 .

The wireless slave station device 20 is driven by a power supply unit 25 connected to a commercial power supply (AC 100 V), and the power supply unit 25 can ensure power supply for 48 hours or 72 hours (operating time during power failure) during a power failure. It has a storage battery 25a.

The transmitting/receiving section 23 has a modulation/demodulation section 23a. The modulation/demodulation unit 23 a demodulates and digitally converts the reception signal from the radio master station apparatus 10 received via the antenna AT, and outputs the digitally converted reception signal to the control unit 21 .

In addition to the slave station control program 22a, the memory unit 22 stores own station identification data 22b, and also secures a distribution data memory 22c and the like.

As the own station identification data 22b, data of the child station identification number of the own station is stored in order to identify that the control signal received from the radio master station device 10 is a control signal designating the own station. be.

A plurality of memory areas (area numbers 1, 2, 3, . . . ) are reserved in the distribution data memory 22c. is registered and stored in the designated memory area.

When a broadcast control signal designating a child station identification number and a memory area number n of the distribution data memory 22c is received from the radio master station device 10, the audio amplification unit 24 designates the distribution data memory 22c. The distribution data (sound source (audio signal) to be broadcast) read out from the memory area n of is amplified, and reproduced and output as loudspeaker sound from the speaker SP.

In the radio slave station device 20 (20a to 20e) configured as described above, the control section 21 controls the operation of each circuit section in accordance with the instructions described in the slave station control program 22a, and software and hardware are combined. By operating in cooperation, various functions (data registration function/audio broadcasting function/data deletion function, etc.) described in the following description of operation are realized.

Next, the operations of the radio master station device 10 and the radio slave station devices 20 (20a to 20e) in the disaster prevention administrative radio system having the above configuration will be described.

FIG. 3 shows master station processing (data registration control processing) of the wireless master station device 10 in the disaster prevention administrative wireless system and slave station processing (data registration processing) of the corresponding wireless slave station devices 20 (20a to 20e). It is a flow chart showing.

In the wireless master station device 10, when the operation mode of the master station device 10 is set to the data registration control mode according to the user operation of the operation unit 14 (step P1 (registration)), the memory unit 12 stores Based on the slave station identification data 12b, the slave station identification number of the radio slave station device 20 to be registered as the sound source data is designated from one of individual/group/collective (step P2).

Here, among the broadcast target areas (A district) of the wireless master station device 10, first, each slave station identification number of the wireless slave station devices 20a and 20b in the a district before municipal merger is specified as a group.

Further, based on the slave station memory area designation data 12c stored in the memory unit 12, the numbers of the memory areas to be registered for the sound source data are designated from areas 1, 2, and 3, for example (step P3). ).

Here, for example, memory area number "1" is specified.

Further, based on the distribution data 12d stored in the memory unit 12, the sound source data to be registered is, for example, sound source A; Either one is selected (step P4).

Here, for example, "sound source A; hometown ◯" is selected.

Then, for each slave station identification number of the radio slave station devices 20a and 20b in the a area designated as a group in step P2 and the memory area number "1" designated in step P3, step P4 A data registration control signal added with the distribution data "sound source A; hometown ◯" to be registered selected in step P5 is generated and transmitted from the transmitting/receiving section 13 (step P5).

After that, if there is another radio slave station device 20 whose registration target is different distribution data (sound source) in the broadcast target area (area A), the processing after step P2 is repeated in the same way ( Step P6 (Yes)→P2).

Here, for example, for each slave station identification number and memory area number "1" of the wireless slave station devices 20c to 20e in the b area designated as another group, newly selected distribution data to be registered A data registration control signal to which "sound source B; house ◯" is added is generated and transmitted from the transmitting/receiving section 13 (steps P2 to P5).

In the radio slave station devices 20a and 20b in the area a in the broadcast target area (area A), data registration control including the slave station identification number of the own station based on the own station identification data 22b in the memory unit 22 When it is determined that the signal has been received (step Q1 (registration)), the designated memory area number n (here, "1") and distribution data (here, "sound source A; ○”) is extracted (step Q2).

Then, the received delivery data "sound source A; .

On the other hand, in the radio slave station devices 20c to 20e of the b district in the broadcast target area (A district), the processing of steps Q1 to Q3 is similarly executed, and the specified memory area (area The received distribution data "sound source B; house ◯" is registered for the number "1").

After that, in the same manner as described above, the master station processing (steps P1 to P6) in the data registration control mode in the wireless master station device 10 and the data registration control signal in the wireless slave station device 20 (20a to 20e) are performed. By repeatedly executing the slave station processing (steps Q1 to Q3), the distribution data memory of the wireless slave station devices 20a and 20b in the a district before municipal merger among the broadcast target areas (A district) In 22c, "Sound source A; Hometown ○" is registered in memory area "1", "Sound source C; In addition, in the distribution data memory 22c of the radio slave station devices 20c to 20e in district b before the merger of municipalities, memory area "1" contains "sound source B; It is assumed that "Yuyake Koyaki ◯" and "Sound Source A; Hometown ◯" are registered in memory area "3" (see FIG. 2).

FIG. 4 shows master station processing (broadcast control processing) of the wireless master station device 10 and corresponding slave station processing (broadcast processing) of the wireless slave station devices 20 (20a to 20e) in the disaster prevention administrative wireless system. It is a flow chart.

In the radio master station device 10, when the operation mode of the master station device 10 is set to the broadcast control mode according to the user operation of the operation unit 14 (step P1 (broadcast)), the broadcast control shown in FIG. The processing is shifted to (step PT).

This broadcast control process (PT) is repeatedly executed, for example, every time a clock signal of a preset time (for example, 17:00 (first time)) is output in a clock circuit incorporated in the control unit 11. be.

First, the radio slave station devices 20 (20a to 20e) targeted for the scheduled (17:00) audio broadcast are automatically designated based on the slave station identification data 12b stored in the memory section 12. (Step T1).

Here, each slave station identification number of all the wireless slave station devices 20a to 20e within the broadcast target area (A district) of the wireless master station device 10 is automatically designated collectively.

In addition, the number of the memory area in the distribution data memory 22c of the wireless slave station device 20 (20a to 20e) storing the data of the sound source targeted for the scheduled (17:00) audio broadcast is automatically specified. (step T2).

Here, for example, memory area number "1" is specified.

Then, each slave station identification number of all the wireless slave station devices 20a to 20e in the broadcast target area (area A) collectively specified in step T1 and the memory area number "1" specified in step T2. ” is generated and transmitted from the transmitting/receiving section 13 (step T3).

Broadcast control signal containing the slave station identification number of the local station based on the local station identification data 22b in the memory unit 22 in all the radio slave station devices 20a to 20e in the broadcast target area (area A) is received (step Q1 (broadcast)), the process proceeds to the broadcast process shown in FIG. 4B (step QR).

Then, the specified memory area number n (here, "1") is extracted from the received broadcast control signal (step R1).

Then, the distribution data registered in the specified memory area (area number “1”) of the distribution data memory 22c in the memory unit 22 (“sound source A; ', and 'sound source B;

As a result, the fixed time (17:00) audio broadcast to the broadcast target area (A district) of the radio master station device 10 can be performed in the same sound source as before the merger of municipalities in the a district in the broadcast target area (A district). In district b, the same sound source as before the merger of municipalities, ``Sound source B; House ○,'' can be used.

Furthermore, in the same manner as described above, the broadcast control processing (PT; T1 to T3) by the radio master station device 10 is performed, for example, at a preset second time (8:00), when memory area number "2" is broadcasted. is specified, and at the third time (12:00), the broadcast target memory area number "3" is specified, and all the radio slave station devices 20a to 20e in the broadcast target area (area A) are collectively By specifying and repeating, even if there is an audio broadcast at the same time in the broadcast target area (area A), in area a, "sound source C; B; house ○”, and at 17:00, “sound source A; hometown ○” can be broadcast. At 17:00, "sound source A; hometown ◯" and "sound source B; home ◯", which is different from the area a, can be broadcast.

Therefore, according to the disaster prevention administrative radio system having the above configuration, in the radio master station device 10, among the regions (a, b) included in the broadcast target area (A region), the radio slave stations in the designated group a region A data registration control signal to which the designated memory area number "1" and the selected sound source A to be broadcast are added is transmitted to the devices 20a and 20b, and the selected sound source A is stored in the designated memory area "1". to register. In addition, to the radio slave station devices 20c to 20e in the designated group area b, a data registration control signal to which the designated memory area number "1" and the selected broadcast target sound source B are added is transmitted. The selected sound source B is registered in the memory area "1".

Then, when all the radio slave station devices 20a to 20b in the broadcast target area (area A) are collectively designated from the radio master station device 10 and a broadcast control signal designating the memory area "1" is transmitted, The radio slave station devices 20a and 20b broadcast sound source A, and the radio slave station devices 20c to 20e in the b area broadcast sound source B. FIG.

This makes it possible to easily broadcast different sound sources for each district at the same time. It is possible to eliminate the occurrence of areas different from the music (sound source).

Note that in the data registration control processing (see FIG. 3A) in the wireless master station device 10 and the data registration processing in the wireless slave station devices 20 (20a to 20e) (see FIG. 3B), the same The operation of registering the distribution data of the selected sound source (A/B/C) in the designated memory area of the designated radio slave station device 20 (20a to 20e) in the information target area has been described. In the disaster prevention administrative radio system of the above embodiment, the radio master station device 10 further generates and transmits a data deletion control signal designating an arbitrary radio slave station device 20 (20a to 20e) and its memory area. , and in the radio slave station device 20, when receiving the data deletion control signal designating its own station, a configuration is added to perform data deletion processing for deleting the sound source registered in the designated memory area. may

Further, in each of the above embodiments, the radio master station device 10 and the radio slave station devices 20 (20a to 20e) of the disaster prevention administrative radio system have been described, but the feature technology of each of the above embodiments is applied to other radio broadcast systems. By doing so, it is needless to say that the same effects as those of the above-described embodiments can be obtained.

The present invention is not limited to the above-described embodiments, and can be variously modified in the implementation stage without departing from the scope of the invention. Furthermore, each of the above-described embodiments includes inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent elements are deleted from all the constituent elements shown in each embodiment, or some constituent elements are combined in different forms, the problems described in the column of problems to be solved by the invention can be solved and the effect described in the column of the effects of the invention can be obtained, a configuration in which these constituent elements are deleted or combined can be extracted as an invention.

10... Wireless master station device, 20 (20a to 20e)... Wireless slave station device,
11, 21... control section (CPU), 12, 22... memory section,
12a... Master station control program, 12b... Slave station identification data,
12c... Slave station memory area designation data, 12d... Distribution data,
22a: slave station control program, 22b: own station identification data,
22c... distribution data area, 13, 23... transmission/reception section, 13a, 23a... modulation/demodulation section,
14... operation unit, 15... display unit, 24... voice amplification unit, 30... relay station, 40... government building,
AT...Antenna, SP...Speaker.

Claims (8)

A disaster prevention administrative radio system that includes a master station device and a plurality of slave station devices and performs regular broadcasting to a plurality of set broadcast target areas,
The master station device
slave station designation means for designating the slave station device desired to perform scheduled broadcasting;
transmitting means for transmitting a broadcast control signal for regular broadcasting containing designation information designating a memory area in which song data to be transmitted is registered to the slave station device designated by the slave station designation means;
The slave station device
a memory unit having a plurality of memory areas for storing music data serving as a broadcast sound source, the music data being registered in a predetermined memory area determined for each of the broadcast target areas;
receiving means for receiving a broadcast control signal including information specifying the memory area, which is transmitted by the transmitting means of the master station device;
sound source output means for outputting music data registered in the memory area of the memory unit corresponding to the designation information in accordance with the broadcast control signal received by the receiving means;
Disaster prevention administrative radio system. In the master station device,
The child station specifying means is a child station specifying means capable of specifying the child station device for each preset broadcast target area, and
Delivery data including designation information for designating a memory area of a memory unit determined for each multicast target area and music data to the slave station devices in the multicast target area designated by the slave station designating means, Data registration control means for transmitting via the transmission means,
The slave station device further
a sound source registering means for registering, when receiving the distribution data via the receiving means, music data included in the distribution data in a memory area corresponding to designation information for designating a memory area;
The disaster prevention administrative radio system according to claim 1. In the master station device,
the transmission means is transmission means for further specifying the child station device and transmitting a sound source deletion control signal;
The slave station device further
When the reception means receives the sound source deletion control signal transmitted by the transmission means of the master station device specifying the child station device, the sound source deletion control signal is registered in the memory area according to the received sound source deletion control signal. provided with a sound source deletion means for deleting the music data,
The disaster prevention administrative radio system according to claim 1 or 2. A master station device of a disaster prevention administrative radio system that includes a plurality of slave station devices and performs regular broadcasting to a plurality of set broadcast target areas,
slave station designation means for designating the slave station device desired to perform scheduled broadcasting;
transmitting a broadcast control signal for a regular broadcast containing designation information designating a memory area of a memory unit in which song data to be transmitted is registered to the slave station device designated by the slave station designating means; a transmission means for outputting music data registered in the memory area of the memory unit corresponding to;
A master station device with The child station specifying means is a child station specifying means capable of specifying the child station device for each preset broadcast target area, and
Delivery data including designation information for designating a memory area of a memory unit determined for each multicast target area and music data to the slave station devices in the multicast target area designated by the slave station designating means, Data registration control means for transmitting via the transmission means and registering it in a memory area corresponding to the specified information,
5. The master station device according to claim 4. A slave station device of a disaster prevention administrative radio system, comprising a master station device and a plurality of slave station devices, and performing regular broadcasting to a plurality of set broadcast target areas,
a memory unit having a plurality of memory areas for storing music data serving as a broadcast sound source, the music data being registered in a predetermined memory area determined for each of the broadcast target areas;
receiving means for receiving a broadcast control signal including information specifying the memory area, which is transmitted from the master station device;
sound source output means for outputting music data registered in the memory area of the memory section corresponding to the designation information in accordance with the broadcast control signal received by the receiving means;
slave station device. moreover,
When the receiving means receives distribution data including designation information for designating a memory area of the memory unit and music data transmitted from the master station device, the music data included in the distribution data corresponds to the designation information. provided with sound source registration means for registering in a memory area that
The slave station device according to claim 6. A district-specific simultaneous and heterogeneous content broadcasting method in a disaster prevention administrative radio system that includes a master station device and a plurality of slave station devices and performs scheduled broadcasting to a plurality of set broadcast target areas,
The master station device
Designate the slave station device that you want to broadcast on a regular basis,
transmitting a broadcast control signal for a regular broadcast containing designation information designating a memory area in which song data to be transmitted is registered to the designated child station device;
The slave station device
a memory unit having a plurality of memory areas for storing music data to be a broadcast sound source, the music data being registered in a predetermined memory area determined for each of the broadcast target areas;
receiving a broadcast control signal including information specifying the memory area transmitted from the master station device;
outputting song data registered in a memory area of the memory unit corresponding to the specified information in accordance with the received broadcast control signal;
Simultaneous heterogeneous content broadcasting method by region.

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