JP2008009948A - Emergency disaster flash transmission system and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system and method stably transmitting an emergency disaster flash simultaneously to hundreds of thousands to millions of households. <P>SOLUTION: The system uses a CATV network, and comprises a distribution server 20 for distributing to a disaster flash transmitters in CATV broadcast facilities an emergency disaster flash containing data transmitted from the Meteorological Agency 10 on a seismic intensity, earthquake occurrence time, and an epicenter; a disaster flash transmitter 30 in CATV broadcast facilities for computing the data in the emergency disaster flash distributed from the distribution server and subscriber location information to generate guidance broadcast data, FM-modulating the generated guidance broadcast data, and transmitting the FM-modulated data to receivers in subscribers' houses through CATV network cables; and in-house receivers 50, connected to the CATV network cables, for receiving the guidance broadest data through the disaster flash transmitter and outputting the data to an announcing device. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an emergency disaster bulletin, and more particularly to an emergency disaster bulletin transmission / reception method using the system, and a transmission / reception system for quickly transmitting an earthquake warning to each home.

  When the Meteorological Agency detects the occurrence of an earthquake, it is important to quickly inform the citizens of each household. Broadcast media such as TV broadcasts and radios are traditional earthquake warning means that have been widely used. However, when people in the home come into contact with the earthquake alarm via such TV or radio, it is likely that the earthquake wave has already arrived, and the TV receiver or radio is not turned on. Has the limitation that it cannot transmit earthquake warnings.

  On the other hand, a method of transmitting an earthquake warning using an Internet line (IPv4) is known (for example, see Patent Document 1). However, the number of households where one server can simultaneously transmit earthquake warnings using the Internet line is limited to several hundred households, and multiple servers are installed and managed to simultaneously transmit to hundreds of thousands of households. This is not preferable from the viewpoint of cost and safety. In addition, since an emergency disaster bulletin such as an earthquake or tsunami informs a danger to a severe disaster in only a few tens of seconds, a transmission failure due to an excessive load on the network is a fatal problem.

  For example, emergency disaster bulletins such as earthquakes and tsunamis must be transmitted within the shortest possible time, and stability on the network must be guaranteed. This is to provide the people who live in areas where emergency disasters are imminent with the time available to prevent human and property damage.

JP 2005-107955 A

  Therefore, the present invention is to solve such a problem, and an object of the present invention is to provide a system and a method capable of promptly transmitting an emergency disaster bulletin.

  Another object of the present invention is to provide a system and method capable of stably and simultaneously transmitting emergency disaster bulletins to hundreds of thousands or millions of households.

  Another object of the present invention is to avoid the creation of a new network that only requires high costs and efforts when constructing a system for promptly and stably transmitting emergency disaster bulletins. To provide a system and method that can reduce the cost of server construction and management, the purchasing cost of receiving devices necessary for the general public to receive emergency disaster warnings, and easy installation work. It is in.

  In order to achieve the above object, the present invention uses a CATV network. The system of the present invention includes a distribution server that distributes emergency disaster bulletin including seismic intensity, earthquake occurrence time, and epicenter data transmitted from the Japan Meteorological Agency to a disaster bulletin transmission device located in a CATV broadcasting facility, and the distribution server Calculates emergency disaster bulletin data and subscriber location information distributed from, generates guidance broadcast data including seismic intensity and arrival time, FM modulates this guidance broadcast data, and subscribers via CATV network cable A disaster early warning transmitting device in a CATV broadcasting facility for transmitting to a home receiving device, a home receiving device connected to a CATV network cable, receiving guidance broadcast data via the disaster early warning transmitting device, and outputting it to a notification device; It is characterized by including.

  Preferably, the subscriber location information includes latitude, longitude, and ground amplification factor.

  The guidance broadcast data includes seismic intensity and arrival time.

  Preferably, the notification device of the home reception device is an audio output unit, and in another embodiment, the notification device of the home reception device further includes an LED display unit or a full text display unit. be able to.

  The connection between the home receiver and the CATV network cable is performed by branching a network cable drawn into the home and connecting it to the cable connector of the home receiver.

  Also, the disaster breaking news transmitting apparatus of the system of the present invention includes a subscriber database in which subscriber home address information and subscriber personal information are stored, and latitude, longitude and ground amplification factor for the address information. A location information database in which location information and an area code are stored, and an operation unit that calculates an earthquake intensity and an arrival time by using the location information database for an emergency disaster bulletin received from the distribution server and determines an area code to be broadcast And a guide broadcast data generating unit that generates guide broadcast data according to a calculation result of the calculation unit, and an FM transmitter that FSK-modulates the guide broadcast data and transmits it in a predetermined FM band.

  The emergency disaster bulletin transmission / reception method of the present invention is installed in the CATV broadcasting station, wherein the Japan Meteorological Agency server transmits the emergency disaster bulletin to the distribution server, the distribution server distributes the emergency disaster bulletin to the CATV broadcasting station, and A step of receiving an emergency disaster bulletin from the distribution server, calculating an emergency disaster bulletin based on location information and a region code of a predetermined subscriber, and generating guidance broadcast data; FSK-modulate and transmit to the subscriber's home using a CATV network in a predetermined FM band, a step of receiving and demodulating the guide broadcast data by the home receiver, and the guide broadcast data to the notification device And a step of outputting.

  Preferably, the subscriber location information used in the step of generating the guidance broadcast data includes latitude, longitude, and ground amplification factor.

  Preferably, the guide broadcast data generated in the step of generating the guide broadcast data includes a seismic intensity and an arrival time.

  Further, the step of outputting the guidance broadcast data to the notification device performs voice guidance through a voice output unit of the home receiving device. Furthermore, it visually guides via the LED display part or the full text display part of the said home receiver.

  According to the present invention, when an emergency disaster such as an earthquake is predicted, there is an advantage that an emergency disaster bulletin can be transmitted promptly and stably to a large number of subscribers of CATV broadcasting stations. It is no exaggeration to say that prediction of an emergency disaster such as an earthquake takes several seconds to several tens of seconds. Therefore, how quickly an emergency disaster such as an earthquake can be predicted is technically important and has great social significance.

  In addition, since the existing network can be used as it is, the construction and management costs of the server can be reduced.

  In addition, the receiving terminal in the house of the present invention has an advantage that it is very easy during installation work by distributing and connecting the cables drawn into the house through the distributor.

  Even if the effect is not specifically mentioned in the specification of the present invention, the provisional effect expected by the technical features of the present invention should be treated as described in the specification of the present invention. Add.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the present invention, if it is determined that there is a risk of unnecessarily disturbing the gist of the present invention, which is already obvious to a technician in the field, such as a related known configuration, a detailed description thereof will be given. Is omitted. The following embodiment will be described on the assumption that the emergency disaster is an earthquake for convenience of explanation.

  FIG. 1 shows a schematic system according to an embodiment of the present invention. The Japan Meteorological Agency 10 analyzes information collected at a large number of earthquake observation points 1 and determines whether or not to issue an earthquake warning. If the information collected from the observation point 1 is equal to or greater than a predetermined standard, the server of the Japan Meteorological Agency 10 transmits an emergency disaster bulletin including seismic intensity, earthquake occurrence time, and epicenter data to the distribution server 20. Actually, the server of the Meteorological Agency 10 issues an emergency disaster bulletin not only using the distribution server 20 of the present invention but also using all networks (public wave broadcasting, satellite broadcasting, Internet network, mobile network, etc.). The distribution server 20 of the present invention aims to quickly distribute emergency disaster bulletins to the home using a CATV network, and the mediator is the disaster bulletin transmission device 30 located in each CATV broadcasting station. Distribution server 20 and disaster bulletin transmission device 30 in CATV broadcasting station 40 are connected via Internet line N1. The disaster bulletin transmission device 30 generates emergency broadcast data by calculating the emergency disaster bulletin data distributed from the distribution server 20 together with the stored subscriber location information, and generates a large number of these via the CATV network cable N2. Broadcast to the subscriber receiving terminal device 50 simultaneously and quickly.

  FIG. 2 schematically shows an embodiment of the configuration of the disaster early warning transmission device 30. The disaster bulletin transmission apparatus 30 has two main databases, that is, a subscriber database 31 and a location information database 32. The subscriber database 31 stores subscriber address information and subscriber personal information. The subscriber is managed through the subscriber database, and a database related to billing is generated. In addition, the position information database 32 stores the latitude and longitude by the address and the ground amplification factor. The location information database 32 also stores a region code that is predetermined based on the latitude, longitude, and ground amplification factor.

  The computing unit 33 of the disaster bulletin transmission device 30 uses the seismic intensity of the emergency disaster bulletin distributed from the distribution server, the earthquake occurrence time, the information on the epicenter, and the position information stored in the position information database 32 to detect the earthquake. Calculate the predicted seismic intensity and the predicted earthquake arrival time. The calculation unit 33 has programs necessary for calculation, and the seismic intensity, the time of occurrence of the earthquake, the latitude and longitude of the epicenter, the latitude and longitude of the subscriber address, and the ground amplification factor are input as variables of each program. Calculated according to a predetermined procedure.

  The calculation for each subscriber address location can improve the accuracy of the calculation, but a database must be created for each subscriber, and it must be calculated for each subscriber. Such work is inefficient from the viewpoint of database and computing server management. Accordingly, the individual subscriber address is integrated into a specific area to give an area code, and the position information database 32 stores the area code. The position information including latitude, longitude, and ground amplification factor stored in the position information database 32 is classified by area code, and the calculation of the calculation unit 33 is performed for each area code. For example, the area code is preferably classified based on the administrative district, but it is necessary to reconfigure the area code based on the ground amplification factor of the area.

  Table 1 below shows that, for example, when an earthquake with a seismic intensity of 7.0 and an epicenter depth of 90 km occurred in the northern part of Oshima, Tokyo Bay (latitude 34.52, longitude 169.19), It is embodiment which simulated the calculation result.

  As a result of calculating other areas in Arakawa-ku, Tokyo based on the latitude, longitude, and ground amplification factor, the expected earthquake intensity is in the range of 4.106199 to 4.311279, and the number of seconds required to reach is 41.1147469. A range of -41.2826626 seconds was shown. As a result, it is more reasonable to give the same area code to the whole area of Arakawa-ku in Tokyo. Since the same area code, it is possible to simultaneously broadcast the guidance broadcast data having the same contents. Of course, even in the same administrative district, different regional codes can be given due to deviations such as ground gain data. Therefore, although it is based on the administrative district (it is effective based on the nature of CATV broadcasting, it is effective based on the administrative district), it is simulated in advance based on the data of latitude, longitude, and ground amplification factor, and the simulation result is Accordingly, the area code is adjusted and stored in the position information database 32.

  The calculation unit 33 calculates an emergency disaster bulletin based on the location information with the region code sign to calculate the seismic intensity and the arrival time, and if the seismic intensity of the earthquake is greater than or equal to a predetermined magnitude, the guidance broadcast data generation unit 34 Data for guiding the receiving terminal of the magnitude of the earthquake and the time taken to reach the subscriber area, that is, guidance broadcast data “Seismic intensity 4, after 17 seconds” is generated.

  The generated guidance broadcast data is transmitted to the receiving terminal by the FM transmitter 35. For FM broadcasting, guide broadcasting data is modulated by FSK (Frequency Shifting Keying). The frequency of the modulated wave is selected and determined in advance from the CATV broadcast band of 50 MHz to 820 MHz. And the said guidance broadcast data are simultaneously transmitted to many household receivers 50 via the CATV network cable N2 in a predetermined frequency band.

  FIG. 3 shows a schematic embodiment of how to connect the home receiver 50 of the present invention to a CATV network. The cable is branched through the distributor 60 at an arbitrary point of the CATV cable N2 drawn into the house. One cable branched via the distributor 60 is connected to a set top box (or cable TV receiver), and the other cable is connected to a cable connector of the domestic receiver 50.

  FIG. 4 is an example schematically showing the internal configuration of the home receiver 50. The cable connector, speaker, LED, etc. of the outer case are not shown for convenience. The home receiving device 50 includes an FM receiving unit 51, a display unit (an example of a notification device) 52, and a power supply unit 53. The display unit 52 includes an audio output unit 522, an LED display unit 521, and a full-text display unit 523. Composed. However, the full-text display unit 523 has an arbitrary configuration, and may be omitted with a focus on the alarm broadcast of the receiving device 50. On the other hand, backup power supply means for supplying emergency power when the volume control means and the power supply are off can be added.

  The FM receiver 51 receives the FM broadcast of the CATV server side transmission device transmitted via the CATV cable, demodulates the guide broadcast data transmitted to the FM broadcast, and causes the LED element 521 to emit light. The earthquake prediction broadcast is performed via the audio output unit 522. When the full-text display unit 523 is provided, the earthquake intensity and the estimated arrival time are displayed through the display window of the full-text display unit 523. FIG. 5 shows an example of the entire external configuration of the home receiver 50 according to the present invention. The display unit 523 displays an earthquake intensity of “seismic intensity 6, after about 16 seconds” and an estimated arrival time, the LED light emitting element 521 is lit by a predetermined method, and an emergency guidance broadcast is transmitted via the speaker 522. Done. However, the position or form of the external configuration is arbitrary.

  FIG. 6 is a process diagram relating to the emergency disaster bulletin transmission / reception method according to the embodiment of the present invention.

  First, the Japan Meteorological Agency server transmits to the distribution server an emergency disaster bulletin including information on seismic intensity, earthquake occurrence time, and epicenter based on data reported from a number of observation points (S10). Next, the distribution server distributes the emergency disaster bulletin to the server of each CATV broadcasting station (S20). When the distribution server primarily distributes the emergency disaster bulletin to the CATV broadcast station server, the transmitting device of the CATV broadcast station server performs a process of secondary distribution to the receiving terminal of each subscriber.

  A disaster bulletin transmission device installed in the CATV broadcasting station receives the emergency disaster bulletin from the distribution server, calculates emergency disaster bulletin by a predetermined calculation method based on predetermined subscriber location information and area code, Guide broadcast data is generated (S30). The calculation process for the emergency disaster warning uses the latitude, longitude, and ground amplification factor of the subscriber area with the area code sign. It is determined whether or not the calculation result value is equal to or less than a predetermined reference value. If the calculation result value is equal to or less than the reference value, the guidance broadcast data is not generated. If the calculation result value is equal to or greater than the reference value, the guidance broadcast data is generated. This guidance broadcast data includes the seismic intensity and the arrival time required to reach the subscriber area.

  Next, the generated guidance broadcast data is subjected to FSK (Frequency shifting Keying) modulation and amplification by the FM transmitter (S40), and a large number of home receivers via the CATV network in a frequency band defined within 50 MHz to 820 MHz. (S50).

  Next, the home receiver connected to the CATV network cable receives the FM guidance broadcast, demodulates it (S60), and outputs it to the display (S70).

  On the other hand, the protection scope of the present invention is not limited by the embodiment explicitly described above. Further, it is added that the protection scope of the present invention is not limited to obvious changes or substitutions in the technical field to which the present invention belongs.

1 is a diagram schematically showing a system configuration according to an embodiment of the present invention. It is a figure which shows schematic structure of the transmitter (30) installed in the CATV broadcasting station which concerns on one embodiment of this invention. It is a figure which shows the cable connection method of the home receiver of this invention. It is a figure which shows the example of an internal structure of the household receiver (50) which concerns on one embodiment of this invention. It is a figure which shows roughly the example of the external whole surface structure of the household receiver (50) which concerns on one embodiment of this invention. It is a process diagram of the emergency disaster bulletin transmission / reception method according to the present invention.

Explanation of symbols

1 Seismic observation point 10 Japan Meteorological Agency 20 Distribution server 30 Disaster early warning transmission device 40 CATV broadcasting station equipment 50 Domestic reception device

Claims (8)

A distribution server that distributes an emergency disaster bulletin including seismic intensity, earthquake occurrence time, and epicenter data transmitted from the Japan Meteorological Agency to a disaster bulletin transmission device located in the CATV broadcasting facility;
The emergency disaster bulletin data and subscriber location information distributed from the distribution server are calculated to generate guide broadcast data including seismic intensity and arrival time, and the guide broadcast data is FM-modulated via a CATV network cable. A disaster early warning transmission device in the CATV broadcasting facility for transmitting to the receiving device in the subscriber's home,
An emergency disaster bulletin transmission / reception system comprising: a home receiver connected to a CATV network cable and receiving guidance broadcast data via the disaster bulletin transmitter and outputting the data to a notification device. The emergency disaster bulletin transmission / reception system according to claim 1, wherein the notification device of the domestic reception device is an audio output unit. The emergency disaster bulletin transmission / reception system according to claim 1, wherein the notification device of the home receiver further includes an LED display unit or a full-text display unit. The connection between the home receiver and the CATV network cable is performed by branching a network cable drawn into the home and connecting to a cable connector of the home receiver. The emergency disaster bulletin transmission / reception system described. The disaster bulletin transmission device includes:
A subscriber database in which subscriber home address information and subscriber personal information are stored;
Position information including latitude, longitude, and ground amplification factor for the address information; a position information database storing a region code;
A calculation unit that calculates the earthquake intensity and arrival time using the location information database for the emergency disaster bulletin received from the distribution server, and determines an area code to be broadcast;
A guide broadcast data generating unit that generates guide broadcast data according to a calculation result of the calculation unit;
The emergency disaster bulletin transmission / reception system according to claim 1, further comprising: an FM transmitter that performs FSK modulation on the guide broadcast data and transmits the modulated broadcast data in a predetermined FM band. The Meteorological Agency server communicates emergency disaster bulletin to the distribution server,
The distribution server distributing emergency disaster bulletin to a CATV broadcasting station;
A disaster bulletin transmission device installed in the CATV broadcasting station receives the emergency disaster bulletin from the distribution server, and calculates the emergency disaster bulletin based on the location information of the subscriber including the latitude, longitude, and ground amplification factor and the area code. Generating guidance broadcast data including seismic intensity and arrival time;
A step of FSK-modulating the guide broadcast data and transmitting it to a subscriber's home in a predetermined FM band using a CATV network;
Receiving and demodulating the guidance broadcast data by a home receiver;
Outputting the guidance broadcast data to a notification device. The method for transmitting and receiving an emergency disaster bulletin according to claim 6, wherein the step of outputting the guidance broadcast data to the notification device provides voice guidance via a voice output unit of the home receiving device. 8. The emergency according to claim 7, wherein the step of outputting the guidance broadcast data to the notification device further includes visually guiding through the LED display unit or the full-text display unit of the home receiving device. Disaster bulletin transmission and reception method.

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