JP5888768B2 - Mobile terminal control method and mobile terminal - Google Patents

Description

  The present invention relates to a mobile terminal control method and program. In particular, the present invention relates to a mobile terminal control method and program capable of receiving an emergency disaster bulletin.

  There is an emergency disaster bulletin notification system using communication / broadcasting infrastructure when a disaster such as a large-scale earthquake occurs. FIG. 2 is a diagram illustrating an example of an outline of an emergency earthquake warning notification system.

  When a large-scale earthquake occurs, seismic wave data captured by the seismometers at observation points 10 and 11 close to the epicenter are analyzed, and information on the location and magnitude of the epicenter is notified to the Japan Meteorological Agency. When the meteorological agency 20 predicts the occurrence of an earthquake from the obtained data, it notifies the television station 30, the radio station 31, a mobile phone carrier, etc. as an emergency earthquake bulletin. The television station 30 or the like that has received the earthquake early warning notifies the viewer of the possibility of an earthquake by a broadcast wave or the like.

  Here, a means for a user of a mobile terminal such as a mobile phone to confirm the possibility of occurrence of an earthquake by means of an earthquake early warning is examined.

  The first means is a method in which the communication carrier receives mail distributed to the mobile terminal 50 existing in the communication area 42 through the base station 40 and the mobile network 41.

  The second means is a method of receiving the earthquake early warning from the one-segment broadcasting transmitted by the television station 30 or the like. In this case, the portable terminal 51 must have a tuner that receives the one-segment broadcasting.

  Here, Patent Document 1 discloses an emergency information receiving system that notifies a passenger of a vehicle without missing emergency information such as an earthquake early warning and improves the safety of the passenger.

  Furthermore, in Patent Document 2, when emergency alert information is received, emergency reception of a user immediately after a disaster is performed by activating broadcast reception and displaying the broadcast after a predetermined activation delay time without receiving broadcast immediately. There has been disclosed a broadcast receiving apparatus that can confirm disaster information by broadcasting without disturbing actions and after emergency evacuation.

JP 2009-130836 A JP 2010-062886 A

  Each disclosure of the above prior art document is incorporated herein by reference. The following analysis has been made from the viewpoint of the present invention.

  As described above, the mobile terminal can confirm the emergency disaster bulletin when a large-scale earthquake or the like occurs by two means. However, both the first and second means have a problem in the confirmation of emergency disaster bulletins for the second and subsequent times.

  The first means has the following problems. When the first large-scale earthquake or the like occurs, the possibility of the occurrence of a disaster such as a large-scale earthquake can be predicted by an emergency disaster bulletin broadcasted by a communication carrier immediately before the occurrence of the disaster. However, when the second and subsequent disasters occur, the function of each base may be lost due to the influence of the first disaster. In other words, there is a possibility that the base station itself will stop functioning due to the first disaster.

  Furthermore, network congestion (concentration of communication) can be considered. This is because when a disaster such as a large-scale earthquake occurs, communications for the purpose of confirming safety by e-mail or telephone call increase instantaneously. This is not a phenomenon that occurs only in the vicinity of the epicenter, but it is not possible to receive the second or later emergency disaster bulletin even in an area far away from the epicenter, or to receive it with a significant delay. cause. Further, since the emergency disaster bulletin transmitted by the communication carrier is transmitted by e-mail, it cannot be confirmed by the first means unless it is within the communication area of the portable terminal.

  The second means has the following problems. The second means is a method of confirming emergency disaster bulletin by one-segment broadcasting. However, the user of the mobile terminal is not always staying in an area where one-segment broadcasting can be received. More specifically, it may be difficult to receive 1Seg broadcasting not only in mountainous areas and underground, but also indoors.

  Furthermore, since the portable terminal is battery-powered, it is assumed that it is difficult to charge the battery in an emergency such as a large-scale earthquake, and it is necessary to be able to receive the emergency disaster bulletin with lower power consumption.

  As described above, there are problems to be solved in portable terminals that can receive emergency disaster bulletins. Therefore, there is a demand for a portable terminal control method and program that more reliably receive emergency disaster bulletins when the second and subsequent disasters occur.

According to a first aspect of the present invention, there is provided a method for controlling a portable terminal capable of receiving FM broadcasts, wherein a first emergency disaster bulletin transmitted in response to the occurrence of a first disaster is received. After the first emergency disaster bulletin, a second step of transitioning the operation mode of the mobile terminal to a state capable of receiving FM broadcast, transmitted by FM broadcast , and the first after receiving the second emergency disaster bulletin that will be sent in response to the occurrence of a second disaster which occurred after the occurrence of a disaster, the shifts the operation mode of the portable terminal to alert the system mode, the possibility of disaster to the user And a third step of alerting the mobile terminal is provided.

According to the second aspect of the present invention, after receiving the first emergency disaster bulletin transmitted in response to the occurrence of the first disaster, the operation mode is changed to a state where FM broadcasting can be received, transmitted, and, said the first after the reception of the second emergency disaster bulletin that will be sent in response to the occurrence of a second disaster which occurred after the occurrence disaster and a control unit that changes the operation mode to the warning system mode, A portable terminal is provided that includes at least one of a display unit, a sound unit, and a vibration unit that warns the user of the possibility of a disaster.

  According to each aspect of the present invention, there is provided a control method and program for a portable terminal that more reliably receive an emergency disaster bulletin when a second or subsequent disaster occurs.

It is a figure for demonstrating the outline | summary of one Embodiment of this invention. It is a figure showing an example of an outline of an emergency earthquake bulletin notification system. It is a figure which shows an example of the internal structure of the portable terminal 1 which concerns on the 1st Embodiment of this invention. It is a figure which shows the chime sound which the FM station of NHK as of March, 2011 transmits. It is a figure which shows an example of the conversion from the time-axis waveform to a frequency-axis waveform in the frequency conversion part 107 shown in FIG. 4 is a flowchart illustrating an example of the operation of the mobile terminal 1. It is a figure which shows an example of the outline of the emergency earthquake bulletin notification system containing the portable terminal.

  First, an outline of an embodiment will be described with reference to FIG. Note that the reference numerals of the drawings attached to this summary are attached to the respective elements for convenience as an example for facilitating understanding, and are not intended to limit the present invention to the illustrated embodiment.

  As described above, the emergency disaster bulletin transmitted immediately before the occurrence of a disaster such as the first large-scale earthquake can be confirmed by a simultaneous mail or the like transmitted by a communication carrier. However, the emergency disaster bulletin transmitted immediately before the occurrence of the second and subsequent disasters may not be received at an appropriate timing due to a malfunction of the infrastructure or network congestion. Also, in areas where radio waves do not reach such as mountainous areas, there is a problem that emergency disaster bulletins cannot be received by one-segment broadcasting. Furthermore, in an emergency such as when a large-scale earthquake occurs, it is assumed that it is difficult to charge the battery of the mobile terminal, and it is necessary to be able to receive emergency disaster bulletins with lower power consumption. Therefore, there is a demand for a portable terminal control method and program that more reliably receive emergency disaster bulletins when the second and subsequent disasters occur.

  Therefore, the mobile terminal control method shown in FIG. 1 is provided as an example. The mobile terminal control method shown in FIG. 1 has a first step of receiving a first emergency disaster bulletin, and after the first emergency disaster bulletin, the operation mode of the portable terminal is set to a state where FM broadcast can be received. After receiving the second step of transition and the second emergency disaster bulletin transmitted by FM broadcasting, the operation mode of the mobile terminal is transitioned to the warning system mode, and the user is warned of the possibility of a disaster third. The process is included.

  That is, the first emergency disaster bulletin is received by simultaneous mail or one-segment broadcasting. Until this first emergency disaster bulletin is received, the FM broadcast is not received (the function of receiving the FM broadcast is not enabled). Therefore, it is not always necessary to receive FM broadcasts, and no power is required for FM broadcast reception.

  Before the occurrence of a disaster such as the first large-scale earthquake, the infrastructure such as the base station has not stopped functioning, and the emergency disaster bulletin transmitted first is likely to be received by the mobile terminal. However, due to the first disaster such as a large-scale earthquake, the function of the base station used to send e-mails and network congestion may occur, and the second and subsequent emergency disaster bulletins may not be received at an appropriate timing. .

  Therefore, after the operation mode of the mobile terminal is changed to a state where FM broadcasting can be received, when the second emergency disaster bulletin is received from the FM broadcasting, the user is notified of the possibility of a disaster. With FM broadcasting, there is no problem of network congestion, and the area that the mobile terminal can receive is wider than that of one-segment broadcasting. For this reason, it is possible to increase the possibility of receiving the second and subsequent emergency disaster bulletins.

  In the present invention, the following modes are possible.

  [Mode 1] The control method of the portable terminal according to the first aspect.

  [Mode 2] In the method for controlling the mobile terminal, the mobile terminal can communicate with another mobile terminal, and after the transition to the warning system mode, the possibility of occurrence of a disaster with respect to the other mobile terminal It is preferable to include the 4th process of notifying.

  [Mode 3] It is preferable that the method for controlling the portable terminal further includes a fifth step of warning the user's vision of the possibility of a disaster.

  [Mode 4] It is preferable that the method for controlling the portable terminal further includes a sixth step of continuing warning to the user in the third and fifth steps until an operation from the user is accepted.

  [Mode 5] Preferably, in the step 3, the received FM broadcast is determined to be the second emergency disaster bulletin based on a chime sound transmitted before the second emergency disaster bulletin.

  [Mode 6] It is preferable that communication with other portable terminals is realized by wireless between the portable terminals.

  [Mode 7] It is preferable that the third step notifies the user of the possibility of a disaster by outputting a warning sound and vibrating the mobile terminal.

  [Mode 8] Preferably, in the method for controlling the mobile terminal, the first emergency disaster bulletin is received by a mail transmitted by a communication carrier or a one-segment broadcasting wave.

  [Mode 9] The mobile terminal control method may include a step of acquiring the possibility of a disaster by communicating with another mobile terminal instead of the second emergency disaster bulletin transmitted by FM broadcasting. preferable.

  [Mode 10] The program according to the second aspect.

  [Mode 11] The program further allows the portable terminal to communicate with another portable terminal, and notifies the other portable terminal of the possibility of a disaster after transition to the warning system mode. It is preferable to execute the process 4.

  [Mode 12] It is preferable that the program further executes a fifth process for warning the possibility of a disaster to the user's vision.

  [Mode 13] It is preferable that the program further executes a sixth process for continuing a warning to the user in the third and fifth processes until an operation from the user is accepted.

  [Mode 14] It is preferable that the processing of 3 is determined based on a chime sound transmitted before the second emergency disaster bulletin as the second emergency disaster bulletin.

  [Mode 15] It is preferable that communication with other portable terminals is realized by wireless between the portable terminals.

  [Mode 16] It is preferable that the third process notifies the user of the possibility of a disaster by outputting a warning sound and vibration of the mobile terminal.

  [Mode 17] Preferably, the program receives the first emergency disaster bulletin by e-mail transmitted by a communication carrier or a one-segment broadcasting wave.

  [Mode 18] It is preferable that the program executes a process for obtaining a possibility of occurrence of a disaster through communication with another mobile terminal instead of the second emergency disaster bulletin transmitted by FM broadcasting.

  Hereinafter, specific embodiments will be described in more detail with reference to the drawings.

[First Embodiment]
The first embodiment of the present invention will be described in more detail with reference to the drawings. In the present embodiment, a case where a large-scale earthquake occurs and an emergency earthquake warning is notified will be described.

  FIG. 3 is a diagram illustrating an example of the internal configuration of the mobile terminal 1 according to the present embodiment.

  The mobile terminal 1 includes a control unit 101, a display unit 102, an audio unit 103, a vibration unit 104, an operation unit 105, an FM reception unit 106, a frequency conversion unit 107, a chime sound determination unit 108, and a short distance. The communication unit 109 is configured.

  The control unit 101 controls the entire mobile terminal 1. In FIG. 3, the control unit 101 controls the display unit 102, the sound unit 103, the vibration unit 104, the operation unit 105, the chime sound determination unit 108, and the short-range communication unit 109.

  The display unit 102 outputs characters, images, and the like on the display.

  The voice unit 103 outputs a call voice and a ring tone.

  The vibration unit 104 generates vibration using an internal motor in a manner mode or the like.

  The operation unit 105 receives an operation on the mobile terminal 1 performed by the user.

  Further, the FM receiving unit 106, the frequency converting unit 107, and the chime sound determining unit 108 constitute an emergency earthquake early warning determining unit.

  The FM receiver 106 receives an FM broadcast. The FM broadcast received by the FM receiver 106 includes a chime sound broadcast by a specific radio station immediately before the occurrence of a large-scale earthquake.

  FIG. 4 is a diagram showing a chime sound transmitted by the NHK FM station as of March 2011. FIG. The chime sound shown in FIG. 4 is composed of five sounds that are shifted from the five sounds by a semitone. After the chime sound shown in FIG. 4 is transmitted twice, an emergency earthquake bulletin announcement is broadcast.

  The frequency conversion unit 107 converts the time axis waveform of the FM broadcast received by the FM reception unit 106 into a frequency axis waveform.

  FIG. 5 is a diagram illustrating an example of conversion from a time axis waveform to a frequency axis waveform in the frequency conversion unit 107. The lower part of FIG. 5 is obtained by converting the portion surrounded by the dotted line in the upper part of FIG. 5 into a frequency axis waveform.

  The chime sound determination unit 108 determines whether or not the FM broadcast received by the FM reception unit 106 is an emergency earthquake warning chime sound from the frequency axis waveform shown in FIG. As shown in FIG. 4, the chime sound broadcast immediately before the earthquake early warning is composed of a unique frequency (pitch). Therefore, if a chime sound is included in the portion surrounded by the dotted line of the waveform shown in the upper part of FIG. 5, a peak appears at a specific frequency as shown in the lower part of FIG. This waveform pattern is stored in advance and matched with the result of frequency conversion of the FM broadcast received by the FM receiver 106 to determine whether or not it is a chime sound.

  When the emergency earthquake warning determination unit determines that the emergency earthquake warning is notified by FM broadcast, the control unit 101 changes the operation mode of the mobile terminal 1 to the warning system mode.

  The near field communication unit 109 enables near field communication such as WiFi (registered trademark) and ZigBee (registered trademark). A description of functional modules for sending and receiving mail and receiving one-segment broadcasting is omitted.

  Next, the operation of the mobile terminal 1 will be described.

  FIG. 6 is a flowchart illustrating an example of the operation of the mobile terminal 1.

  In step S01, the control unit 101 confirms whether or not the first emergency earthquake bulletin has been received. When the first earthquake early warning is received, the process proceeds to step S02. If the first earthquake early warning is not received, the confirmation in step S01 is continued. Before receiving the first earthquake early warning, the functions of the emergency earthquake warning determination unit (FM reception unit 106, frequency conversion unit 107, and chime sound determination unit 108) are turned off.

  The reason for turning off the initial setting of the emergency earthquake warning judgment part is that the base station is normal and the possibility of receiving the first emergency earthquake warning is very high until the first large-scale earthquake occurs. . Therefore, before the first emergency earthquake warning is received, the function of the emergency earthquake warning determination unit is turned off to suppress the power consumption of the mobile terminal 1.

  In step S02, the control unit 101 sets a period (polling time) for monitoring the state of FM broadcast and short-range communication. Here, it is assumed that it is difficult to charge the battery of the mobile terminal 1 when a large-scale earthquake occurs. Therefore, it is preferable that the polling time can be arbitrarily set. In order to suppress battery consumption, the initial setting of the polling time is, for example, 1 second. During the period corresponding to the polling time, the process shown in the flowchart of FIG. 6 is interrupted. The FM broadcast is not received during the processing interruption period.

  In step S03, the FM receiver 106 of the emergency earthquake warning determination unit receives FM broadcasts. Further, the chime sound determination unit 108 confirms whether or not the received FM broadcast is a chime sound of an emergency earthquake warning. If the FM broadcast is a chime sound, the process proceeds to step S04. If the FM broadcast is not a chime sound, the process proceeds to step S06.

  In step S04, as in step S03, it is checked whether the received FM broadcast is an emergency earthquake warning chime sound. If the FM broadcast is a chime sound, the process proceeds to step S05. If the FM broadcast is not a chime sound, the process proceeds to step S06. Note that the confirmation target of the chime sound in this step may be different from the confirmation target in step S03. More specifically, as shown in FIG. 4, the frequency (pitch) of the first chime sound and the next chime sound are not always the same. In the chime sound shown in FIG. 4, the first chime sound and the next chime sound are shifted by a semitone.

  Also in step S05, as in steps S03 and S04, it is confirmed whether or not the received FM broadcast is a chime sound of an emergency earthquake warning. If the FM broadcast is a chime sound, the process proceeds to step S07. If the FM broadcast is not a chime sound, the process proceeds to step S06.

  Here, the reason why the chime sound is confirmed again in steps S04 and S05 in addition to step S03 is to prevent erroneous determination of a sound similar to the chime sound as a chime sound. Therefore, it can be said that steps S04 and S05 are protection processes for preventing erroneous determination of the chime sound.

  As described above, the chime sound broadcast from the radio station includes five sounds that are the first chime sound, five sounds that are shifted from the next chime sound by a semitone, five sounds that are the same as the first chime sound, and finally two It may consist of five sounds that are shifted by a semitone similar to the second chime sound. If the chime sound is configured as described above, the chime sound is determined more reliably by confirming the chime sound again in step S05. Therefore, when the chime sound is successfully determined three times in succession, the process proceeds to step S07 on the assumption that the chime sound broadcast by the radio station has been received.

  On the other hand, if the chime sound determination fails in any of steps S03 to S05, the process proceeds to step S06.

  In step S06, it is confirmed whether a warning notification has been received from another portable terminal. If a warning notification has been received from another mobile terminal, the process proceeds to step S07. If no warning notification has been received from another portable terminal, it is determined that the emergency earthquake bulletin has not been broadcast, and the process returns to step S02 to continue the process.

  As described above, the chime sound may repeat five sounds that are shifted from the five sounds by a semitone twice. In such a case, depending on the timing at which polling is started, there may be a case where the determination of the third chime sound is not successful (for example, the determination is started from the third chime sound). In consideration of such misjudgment, the earthquake early warning is shared by mobile terminals close to each other. In other words, the short-range communication unit 109 is used for mutual communication of warning notifications to portable terminals that cannot receive the earthquake early warning due to some influence.

  In step S07, the control unit 101 sets the operation mode of the mobile terminal 1 to the warning system mode.

  In step S08, the control unit 101 notifies the user of the mobile terminal 1 that the earthquake early warning has been received using the voice unit 103 and the vibration unit 104. At that time, it is preferable to forcibly output sound and vibration even if the portable terminal 1 is in the manner mode (prohibit output of sound and vibration). This is because, in addition to the seriousness of the situation that a large-scale earthquake occurs, the possibility of a large-scale earthquake occurring is known to the humans around the user of the mobile terminal 1. Therefore, the volume of the warning sound output from the voice unit 103 is preferably the maximum volume.

  In step S09, it is confirmed whether or not the short-range communication unit 109 is mounted on the mobile terminal 1. If the short-range communication unit 109 is installed, the process proceeds to step S10. If the short-range communication unit 109 is not installed, the process proceeds to step S11. The reason why this step is necessary is that several types of mobile terminals 1 have been developed, and some of them may not be equipped with the short-range communication unit 109.

  In step S10, the short-range communication unit 109 is used to transmit a warning notification to nearby mobile terminals. This step is a processing paired with step S06.

  In step S11, a warning is displayed using the display unit 102. The reason why the warning display in this step is performed after the warning sound and the vibration output in step S08 can be derived from the usage mode of the user's portable terminal 1.

  That is, the user always carries the portable terminal 1 but does not always use (hold it in his hand), and the situation is such that the portable terminal 1 is stored in a pocket or bag. There are more. Therefore, the first warning is realized by appealing to the auditory sense and the tactile sense that can be intuitively judged, and the possibility of the occurrence of a large-scale earthquake is informed to the user and the surrounding people. Then, a process of visually confirming detailed information is adopted.

  In step S12, it is determined whether or not to stop the warning output of the portable terminal 1 according to the intention of the user of the portable terminal 1. If the user selects stop, the process ends. If the user does not select stop, the process of step S12 is continued. In other words, in the situation where the warning output stop is not selected in this step, the user himself may be a victim of a large-scale earthquake, and continuing the warning output notifies the user of the safety. It can be a means.

  Note that the FM stations received by the FM receiver 106 are preferably limited to specific FM stations. This is because if a plurality of FM stations are to be selected, electric power is required for channel selection. The broadcast frequency of the FM station varies depending on the region, and it is necessary to tune the frequency according to the FM station in the region where the mobile terminal is used. Therefore, it is necessary to specify the area where the mobile terminal is used. If the mobile terminal is equipped with a service such as an area notification function provided by a telecommunications carrier or a mobile terminal equipped with GPS, the mobile terminal is identified by GPS information. It is possible to identify the area that is being used.

  FIG. 7 is a diagram illustrating an example of an outline of an earthquake early warning notification system including the mobile terminal 1. In FIG. 7, the same components as those in FIG. 2 are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 7, even if the portable terminal 1b cannot receive the one-segment broadcasting, if the portable terminal 1a can receive the earthquake early warning by FM broadcasting, the information is shared with the portable terminal 1b. Similarly, even if the mobile terminals 1c and 1d cannot confirm the earthquake early warning via the mobile network 41, the earthquake early warning can be obtained via the mobile terminal 1b.

  As described above, the portable terminal 1 according to the present embodiment can obtain the earthquake early warning from FM broadcasting and other portable terminals in addition to obtaining the earthquake early warning from simultaneous mail, one-segment broadcasting, or the like. . In other words, even if some infrastructures stop functioning due to the occurrence of a large-scale earthquake, critical information such as the possibility of a large-scale earthquake can be obtained by another infrastructure.

  Furthermore, not only the user of the portable terminal 1 but also the people around it can be made aware of the possibility of a large-scale earthquake. Therefore, the portable terminal 1 contributes to public interest.

  In recent years, with the spread of one-segment broadcasting and the Internet, most users do not have a radio tuner. Although radio tuners in recent years have become smaller and can be easily carried, it is not the situation that most people carry radio tuners and prepare for receiving earthquake early warnings. In the situation shown in Fig. 7, FM broadcasts by radio tuners are the only way to obtain earthquake early warnings, but there are very few people who have radio tuners, and those who benefit from earthquake early warnings by radio tuners. Are very few. However, by using the mobile terminal 1, even if the infrastructure is destroyed by a large-scale earthquake and the radio tuner becomes the only means for obtaining emergency earthquake warnings, the benefits can be obtained.

  Each disclosure of the cited patent documents and the like cited above is incorporated herein by reference. Within the scope of the entire disclosure (including claims) of the present invention, the embodiment can be changed and adjusted based on the basic technical concept. Various combinations and selections of various disclosed elements are possible within the scope of the claims of the present invention. That is, the present invention of course includes various variations and modifications that could be made by those skilled in the art according to the entire disclosure including the claims and the technical idea.

1, 1a to 1d Mobile terminal 10 to 12 Observation point 20 Japan Meteorological Agency 30 Television station 31 Radio station 40 Base station 41 Mobile network 42 Communication area 50 to 52 Mobile terminal 60 Television 70 Radio tuner 101 Control unit 102 Display unit 103 Audio unit 104 Vibration unit 105 Operation Unit 106 FM Reception Unit 107 Frequency Conversion Unit 108 Chime Sound Determination Unit 109 Short-range Communication Unit

Claims (10)

A method for controlling a portable terminal capable of receiving FM broadcasts,
A first step of receiving a first emergency disaster bulletin transmitted in response to the occurrence of a first disaster ;
A second step of changing the operation mode of the mobile terminal to a state capable of receiving FM broadcasts after the first emergency disaster bulletin;
Transmitted by FM broadcast, and the first after receiving the second emergency disaster bulletin that will be sent in response to the occurrence of a second disaster which occurred after the occurrence of a disaster warning system an operation mode of the mobile terminal A third step of transitioning to mode and alerting the user to the possibility of a disaster,
A method for controlling a mobile terminal, comprising:   Further, the mobile terminal can communicate with another mobile terminal, and the user is informed of the occurrence of a disaster on the basis of the second emergency disaster bulletin and the disaster occurrence bulletin obtained through communication with the other mobile terminal. The method for controlling a portable terminal according to claim 1, further comprising a step of warning the possibility.   The mobile terminal control method according to claim 1, further comprising a step of notifying another mobile terminal of the possibility of a disaster after the transition to the warning system mode.   Furthermore, the control method of the portable terminal as described in any one of the Claims 1 thru | or 3 including the process of warning a user of the possibility of disaster occurrence through a user's visual sense, auditory sense, or tactile sense.   Furthermore, the control method of the portable terminal as described in any one of the Claims 1 thru | or 4 including the process of continuing the warning of the possibility of disaster occurrence to a user until operation from a user is received.   6. The method according to claim 1, wherein the third step determines the received FM broadcast as the second emergency disaster bulletin based on a chime sound transmitted before the second emergency disaster bulletin. The portable terminal control method described.   The method for controlling a mobile terminal according to any one of claims 1 to 6, wherein the first emergency disaster bulletin is received by a mail transmitted by a communication carrier or a one-segment broadcasting wave. After receiving the first emergency disaster bulletin transmitted in response to the occurrence of the first disaster, the operation mode is changed to a state where FM broadcast can be received, transmitted by FM broadcast , and the first disaster after the second second that will be transmitted in response to occurrence of a disaster emergency disaster bulletin after receiving generated occurs, and a control unit to transition the operation mode to the warning system mode,
A portable terminal comprising: a display unit that warns a user of the possibility of a disaster, at least one of a sound unit and a vibration unit. Furthermore, a communication unit that communicates with other mobile terminals is provided.
The portable terminal according to claim 8, wherein the control unit warns the user of the possibility of a disaster based on the second emergency disaster bulletin and a disaster bulletin obtained through communication with the other portable terminal.   The mobile terminal according to claim 9, wherein the communication unit notifies other mobile terminals of a possibility of a disaster after transition to the warning system mode.

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