JP5217654B2 - Portable terminal device, control method thereof, and program - Google Patents

Description

  The present invention relates to a portable terminal device, a control method thereof, and a program, and more particularly, a portable terminal device having a function of performing short-range wireless communication with another terminal and a function of detecting the position of the own terminal. And a control method and program thereof.

  In recent years, mobile terminal devices such as mobile phones have a function of performing short-range wireless communication with other external devices using Bluetooth (Bluetooth: a registered trademark of Incorporated), GPS (Global Positioning Systems) A device having a function of receiving radio waves from a satellite and detecting the position of the terminal itself is known (for example, Patent Document 1).

  In Patent Document 1, in a situation where the mobile phone communication network cannot be used due to congestion, the location information acquired by the mutual telephone number and the GPS function is mutually exchanged by Bluetooth radio, and the location of the own terminal and the other terminal It is described that the position is displayed together with the map data.

JP 2003-230173 A JP 2006-279628 A

  In the technique described in Patent Document 1, in order to acquire each other's position information using the GPS function and the Bluetooth radio, the user himself / herself has to know the operation method of the mobile phone in advance. For example, when a child who does not know how to operate a mobile phone when he / she visits a crowded sightseeing area with his / her family, the child's mobile phone is placed on the parent's mobile phone. Information is not sent. For this reason, the cellular phone possessed by the parent cannot acquire the location information of the cellular phone possessed by the child, making it difficult to search for the child. Furthermore, in the above mobile phone, the parent cannot immediately notice when the child is lost.

  Patent Document 2 describes a portable information terminal device that detects deterioration of communication quality with an external device by Bluetooth wireless or the like and notifies an alarm when the quality deterioration falls below a predetermined threshold. Therefore, if the technology for notifying an alarm when the communication quality of the Bluetooth radio described in Patent Document 2 deteriorates is applied to the mobile phone described in Patent Document 1, the parent immediately becomes lost when the child gets lost. You can notice.

  However, in crowded tourist areas, it is not enough to just notify the alarm, and once you get lost, you will not be able to send your child's mobile phone location information to the parent's mobile phone. , It will be difficult for parents to find out. At this time, even if the parent calls the phone number of the mobile phone that the child has, the child can get appropriate information about the location from the child because there is no land intuition at the first visited tourist spot. Unless it is not easy to find a child in a short time.

  An object of this invention is to provide the portable terminal device which can automatically acquire the positional information on the other party's portable terminal, its control method, and a program.

In order to achieve the above object, a mobile terminal device according to the first aspect of the present invention provides :
A short-range communication unit that performs short-range wireless communication with other portable terminal devices ;
A position detector for detecting the location of the terminal itself,
When the short-range wireless communication ongoing between the other portable terminal apparatus according to the short-range communications unit is discovered to have been cut, it refers to the storage unit for storing the telephone number of the another mobile terminal device and, via the mobile phone communication network, the position detecting unit sequentially transmitted at predetermined time intervals the position information indicating the position of the own terminal detecting the other mobile terminal device by said another mobile terminal device A mobile phone communication unit that sequentially receives position information indicating the position of the mobile phone from the other mobile terminal device at predetermined time intervals ;
When it is detected that the short-range wireless communication is disconnected, the other mobile phone indicated by the map data, the location of the terminal detected by the location detection unit, and the location information received by the mobile phone communication unit Navigation that displays the position of the terminal device and performs navigation from the position of the terminal detected by the position detection unit to the position of the other mobile terminal device indicated by the position information received by the mobile phone communication unit And
It is characterized by providing .

Moreover, the control method in the portable terminal device which concerns on the 2nd viewpoint of this invention is a control method in a portable terminal device provided with a computer,
A short-range communication step in which the computer performs short-range wireless communication with another mobile terminal device;
A position detecting step in which the computer detects a position of the mobile terminal device;
When it is detected that the short-range wireless communication ongoing with the other mobile terminal device is disconnected, the computer refers to a storage unit that stores a telephone number of the other mobile terminal device, Position information indicating the position of the mobile terminal device detected in the position detection step is sequentially transmitted to the other mobile terminal device at a predetermined time interval via the mobile phone communication network, and the other mobile terminal device A mobile phone communication step of sequentially receiving position information indicating a position from the other mobile terminal device at predetermined time intervals;
When the computer detects that the short-range wireless communication is disconnected, the map data, the position of the mobile terminal device detected in the position detection step, and the position information received in the mobile phone communication step are The position of the other mobile terminal device indicated by the position information received in the mobile phone communication step from the position of the mobile terminal device detected in the location detection step. Navigation steps to navigate to,
It is characterized by having.

A program according to the third aspect of the present invention is a program for a portable terminal device including a computer,
A short-range communication step for performing short-range wireless communication with other mobile terminal devices;
A position detecting step for detecting a position of the mobile terminal device;
When it is detected that the ongoing short-range wireless communication with the other mobile terminal device is disconnected, the mobile phone communication network is referred to a storage unit that stores the telephone number of the other mobile terminal device. Position information indicating the position of the mobile terminal device detected in the position detection step is sequentially transmitted to the other mobile terminal device at predetermined time intervals via A mobile phone communication step of sequentially receiving information from the other mobile terminal device at predetermined time intervals;
When it is detected that the short-range wireless communication is disconnected, the map data, the position of the mobile terminal device detected in the position detection step, and the other information indicated by the position information received in the mobile phone communication step The position of the mobile terminal device is displayed, and navigation from the location of the mobile terminal device detected in the location detection step to the location of the other mobile terminal device indicated by the location information received in the mobile phone communication step is performed. Navigation steps to perform,
Is executed.

  According to the portable terminal device, the control method and the program of the present invention, when disconnection of short-range wireless communication with another portable terminal is detected, the position information of the own terminal is automatically transmitted to the other portable terminal. Thus, other mobile terminals can automatically acquire the position information of the other party.

  Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram showing a configuration of a communication system using a mobile terminal device according to an embodiment of the present invention. The communication system 100 includes mobile phones 20A and 20B, which are mobile terminal devices, a mobile phone communication network (telephone communication network) 21 for communicating via a base station, and GPS satellites that transmit radio waves to the ground. And a satellite network 22. The cellular phones 20A and 20B have a function of performing a call and data transmission / reception via the telephone communication network 21, and a GPS function (position detection function) of detecting the position of the own terminal via the satellite network 22. Furthermore, the cellular phones 20A and 20B have a function of performing short-range wireless communication (hereinafter referred to as Bluetooth communication) 23 by Bluetooth without going through the telephone communication network 21, as shown in the figure.

  FIG. 2 is a block diagram showing functions of the mobile phones 20A and 20B. The cellular phones 20A and 20B include GPS receivers 1a and 1b, GPS antennas 2a and 2b, Bluetooth antennas 3a and 3b, Bluetooth communication units 4a and 4b, transmission and reception antennas 5a and 5b, and transmission and reception units, respectively. 6a, 6b. Further, the cellular phones 20A and 20B include display means 7a and 7b, control units 8a and 8b, and calling means 11a and 11b, respectively. The control units 8a and 8b include calculation units 9a and 9b and storage units 10a and 10b, respectively.

  The Bluetooth communication unit 4a performs short-range wireless communication with the Bluetooth communication unit 4b of the mobile phone 20B via the Bluetooth antenna 3a, and detects a quality deterioration signal when the communication is disconnected or the like. Send to 8a. The GPS receiver 1a receives radio waves from the satellite network 22 via the GPS antenna 2a, detects the position of the terminal itself, and sends the position information to the controller 8a. The control unit 8a sends the position information to the transmission / reception unit 6a.

  The transmission / reception unit 6a refers to the storage unit 10a that stores the telephone number of the mobile phone 20B with reference to the location information transmitted from the control unit 8a, and the mobile phone 20B via the telephone communication network 21 via the transmission / reception antenna 5a. Send to. Further, the transmission / reception unit 6a receives the position information of the mobile phone 20B transmitted from the mobile phone 20B and sends it to the control unit 8a.

  The calculation unit 9a calculates the distance between the mobile phones 20A and 20B based on the location information of the mobile phone 20A whose position has been detected and the received location information of the mobile phone 20B. The display means 7a is an LCD (Liquid Crystal Display) or the like, and displays the position information of the mobile phones 20A and 20B together with the map data. The calling unit 11a is a speaker or the like, and outputs a ringing tone or voice data stored in advance in the storage unit 10a.

  Next, with reference to FIG. 3, the control method of the portable terminal device which concerns on the 1st Embodiment of this invention is demonstrated. In the following, as an example, a situation is assumed in which a parent and child visit a crowded sightseeing spot. It is assumed that the mobile phones 20A and 20B have a common function and each has a parent and child. Note that it is set in advance which of the mobile phones 20A and 20B is to transmit the location information first. Here, it is assumed that the mobile phone 20A transmits to the mobile phone 20B first.

  First, the control units 8a and 8b are configured such that the mobile phone 20A (shown as a mobile phone A in the figure) and the mobile phone 20B (shown as a mobile phone B in the figure) are respectively connected to the Bluetooth communication unit 4a and the Bluetooth communication unit 4b. It is determined whether or not the communication is disconnected during the Bluetooth communication (steps S1 and S2).

  When the communication is disconnected in step S2, the Bluetooth communication unit 4a of the mobile phone 20A sends a quality deterioration signal to the control unit 8a, and then the control unit 8a receives the call signal stored in the storage unit 10a as the calling means 11a. And a ringing tone is generated from the calling means 11a (step S3).

  Furthermore, in the mobile phone 20A, the GPS receiver 1a receives the radio wave from the satellite network 22 via the GPS antenna 2a, detects the position of the terminal itself, and sends the position information A to the controller 8a (step S4). ). The control unit 8a transmits the position information A to the mobile phone 20B via the transmission / reception unit 6a, the transmission / reception antenna 5a, and the telephone communication network 21 (step S5). This transmission is sequentially performed at predetermined time intervals.

  On the other hand, the cellular phone 20B performs the same operation as the cellular phone 20A in steps S8 and S9, and then the control unit 8b transmits the location information B obtained by the location detection by the GPS receiving unit 1b to the cellular phone 20A. (Step S10).

  Next, the cellular phone 20A receives the location information B transmitted from the cellular phone 20B via the telephone communication network 21 (step S6), and then the display means 7a sends the location information A and B to the cellular phone 20A, The current position information of 20B is displayed together with the map data (step S7).

  On the other hand, in the cellular phone 20B, as the same operation as the cellular phone 20A, the location information A transmitted from the cellular phone 20A via the telephone communication network 21 is received (step S11), and the display means 7b further receives the location information A. , B are displayed together with the map data as the current position information of the mobile phones 20A, 20B (step S12).

  According to the control method of the present embodiment, when the Bluetooth communication between the mobile phones 20A and 20B is disconnected, the ringing tone is sounded so that the parent and child who owns the mobile phones 20A and 20B are separated from each other. Can be notified. Even if the child is lost, the current position information of the cellular phones 20A and 20B is automatically displayed on the display means 7a and 7b together with the map data. Therefore, even if the child does not know how to operate the mobile phones 20A and 20B, the parent and child positions possessing the mobile phones 20A and 20B can be automatically displayed by disconnecting the Bluetooth communication. Referring to the displayed position, it becomes easy to search for a lost child.

  Next, a modification of the first embodiment will be described with reference to FIG. In this modification, the processes of steps S13 to S18 related to navigation are added after the processes of steps S7 and S12 in the control method of the cellular phones 20A and 20B shown in FIG. In the modified example, after the current position information of the mobile phones 20A and 20B is displayed on the display means 7a together with the map data in step S7, the control unit 8a asks the user whether or not to navigate to the position of the mobile phone 20B. Selection can be made as appropriate (step S13). If no navigation is performed in step S13, the process ends (step S14). If navigation is performed, navigation to the mobile phone 20B is started (step S15).

  On the other hand, the cellular phone 20B performs the same operation as the cellular phone 20A. After the current position information of the cellular phones 20A and 20B is displayed on the display unit 7b together with the map data in step S12, the control unit 8b The user can appropriately select whether or not to perform the navigation up to (step S16). If navigation is not performed in step S16, the process ends (step S17). If navigation is performed, navigation to the mobile phone 20A is started (step S18). When navigation is started in steps S15 and S18, the position information B is displayed on the mobile phone 20A at predetermined time intervals in order to display on the display means 7a and 7b the current positions of the parent and child possessing the mobile phones 20A and 20B. The position information A is sequentially transmitted to the mobile phone 20B at predetermined time intervals.

  In this modification, not only the current position information of the mobile phones 20A and 20B is automatically displayed together with the map data on both display means 7a and 7b, but also a user who has the mobile phones 20A and 20B. (Parent and child) can be navigated to the current location of the other party. Therefore, even if a child gets lost, it is possible to search for a partner smoothly without confusion.

  Next, with reference to FIG. 5, the control method of the portable terminal device which concerns on the 2nd Embodiment of this invention is demonstrated. First, the control units 8a and 8b determine whether or not the cellular phones 20A and 20B are disconnected during the Bluetooth communication by the Bluetooth communication units 4a and 4b, respectively (steps S21 and S22).

  When the communication is disconnected in step S22, the cellular phone 20A receives the radio wave from the satellite network 22 via the GPS antenna 2a by the GPS receiver 1a, detects the position of its own terminal, and transmits the position information A to the controller 8a. Is sent to the operation unit 9a (step S23). The control unit 8a transmits the position information A to the mobile phone 20B via the transmission / reception unit 6a, the transmission / reception antenna 5a, and the telephone communication network 21 (step S24).

  On the other hand, in the mobile phone 20B, the same operation is performed in step S33, and then the control unit 8b transmits the position information B obtained by the position detection by the GPS receiving unit 1b to the mobile phone 20A (step S34).

  Next, in the cellular phone 20A, the positional information B is received from the cellular phone 20B via the telephone communication network 21, and further via the transmitting / receiving antenna 5a and the transmitting / receiving unit 6a, and the positional information B is calculated in the calculation unit in the control unit 8a. It is sent to 9a (step S25). Next, the calculation unit 9a in the control unit 8a calculates the distance between the mobile phones 20A and 20B based on the input position information A and B (step S26).

  The control unit 8a determines whether or not the distance calculation result calculated in step S26 is less than or equal to a preset distance preset by the owner of the mobile phone 20A (step S27). Return to S22. On the other hand, if the distance is equal to or greater than the set distance in step S27, the control unit 8a sends the calling signal stored in the storage unit 10a to the calling unit 11a, and rings the calling sound from the calling unit 11a (step S28).

  Subsequently, the display unit 7a displays the current position information of the mobile phones 20A and 20B together with the map data (step S29). Next, the control unit 8a allows the user to appropriately select whether or not navigation to the mobile phone 20B is performed (step S30). If navigation is not performed in step S30, the process ends (step S31). If navigation is performed, navigation to the mobile phone 20B is started (step S32).

  On the other hand, in the cellular phone 20B, the same operations as in steps S25 to S32 are performed in steps S35 to S42. That is, in the cellular phone 20B, the position information A is received from the cellular phone 20A in step S35, the distance between the cellular phones 20A and 20B is calculated by the computing unit 9b in step S36, and the distance calculated in step S37 is the cellular phone 20B. It is determined whether or not the holder is less than or equal to a preset set distance.

  Subsequently, if the distance calculation result is greater than or equal to the set distance in step S38, the cellular phone 20B sounds a ringing tone from the calling unit 11b, and in step S39, displays the current location information of the cellular phones 20A and 20B on the map. Display with data. After that, the cellular phone 20B allows the user to appropriately select whether or not navigation to the cellular phone 20A is performed in step S40. If the navigation is not performed, the cellular phone 20B ends in step S41. Starts navigation in step S42.

  According to the control method of the present embodiment, when the Bluetooth communication is disconnected, the mobile phones 20A and 20B transmit / receive position information to each other and automatically calculate the distance between the two, and then the distance between the two is the set distance. If it becomes above, it can alert | report to a user (parent and child) with a ringing tone, respectively. In this way, not only the Bluetooth communication was simply disconnected, but the user would be notified smoothly that the distance between the two was greater than the set distance. You can easily find a lost child.

  Next, with reference to FIG. 6, the control method of the portable terminal device which concerns on the 3rd Embodiment of this invention is demonstrated. Here, unlike the above embodiments, the mobile phone 20A and the mobile phone 20B have different functions. Hereinafter, as an example, the mobile phone 20A will be described as a dedicated machine owned by a parent, and the mobile phone 20B will be described as a dedicated machine owned by a child. Of the processes shown below, the same processes as those shown in FIG. 5 are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

  First, the control units 8a and 8b determine whether or not the cellular phones 20A and 20B are disconnected during Bluetooth communication with the Bluetooth communication units 4a and 4b, respectively (steps S21 and S22). When communication is disconnected in step S22, in the mobile phone 20A, the GPS receiver 1a receives the radio wave from the satellite network 22 via the GPS antenna 2a, detects the position of its own terminal, and the position information A is transmitted to the controller 8a. Is sent to the operation unit 9a (step S23).

  On the other hand, in the mobile phone 20B, the GPS receiver 1b receives the radio wave from the satellite network 22 via the GPS antenna 2b, detects the position of the terminal itself, and sends the position information B to the controller 8b (step S33). ). Subsequently, the control unit 8b transmits the position information B to the mobile phone 20A via the transmission / reception unit 6b, the transmission / reception antenna 5b, and the telephone communication network 21 (step S34).

  Next, in the cellular phone 20A, the location information B is received from the cellular phone 20B via the telephone communication network 21, and further via the transmission / reception antenna 5a and the transmission / reception unit 6a, and the location information B is calculated by the calculation unit in the control unit 8a. It is sent to 9a (step S25). Next, the calculation unit 9a in the control unit 8a calculates the distance between the mobile phones 20A and 20B based on the input position information A and B (step S26).

  The control unit 8a determines whether or not the distance calculation result calculated in step S26 is equal to or less than the set distance preset by the user (parent) of the mobile phone 20A (step S27). The process returns to step S22. On the other hand, if the distance is equal to or greater than the set distance in step S27, the control unit 8a sends the calling signal stored in the storage unit 10a to the calling unit 11a, and rings the calling sound from the calling unit 11a (step S28).

  Next, in the cellular phone 20A, the user can select whether or not to display the current position information on the display means 7a (step S51). If not, the process ends (step S52) and the current position information is displayed. In this case, the process proceeds to step S53 and step S56. Here, as a situation where the current position is not displayed, it is conceivable that the ringing tone sounds so that the parent can find the child immediately and the child does not get lost.

  On the other hand, when there is no child in the parent's field of view when the ringer rings, and the child is lost, the parent responds by contacting the child and navigating to the child's position. It is possible to start. In step S53, the mobile phone 20A transmits a call request signal to the mobile phone 20B via the telephone communication network 21 (step S53).

  Next, the cellular phone 20B receives the call request signal from the cellular phone 20A via the transmission / reception antenna 5b and the transmission / reception unit 6b, and further sends it to the control unit 8b (step S54). Subsequently, the control unit 8b sends the calling signal stored in the storage unit 10b to the calling unit 11b, and causes the calling unit 11b to ring a ringing tone (step S55).

  In step S56, the cellular phone 20A displays the current position information of the cellular phones 20A and 20B together with the map data on the display means 7a. Subsequently, the control unit 8a allows the user (parent) to appropriately select whether or not to navigate to the position of the mobile phone 20B (step S57), and ends when no navigation is performed (step S58). Here, as a situation where navigation is not performed, it is possible that the parent can grasp the route from his / her position to the child's position only by displaying the current position information on the display means 7a, and does not need to rely on navigation. .

  On the other hand, when navigation is made to the position of the mobile phone 20B in step S57, navigation to the mobile phone 20B is started (step S62). As a situation where navigation is performed, there may be a case where it is difficult to search for a child simply by displaying the current position information on the display means 7a without considering the land in a tourist spot visited for the first time.

  Furthermore, even if navigation is started, it becomes difficult to search smoothly if the child moves from the current position. Therefore, in the cellular phone 20A, after step S57, a voice reproduction request signal is transmitted to the cellular phone 20B via the telephone communication network 21 (step S59).

  The cellular phone 20B receives the audio reproduction request signal from the cellular phone 20A via the transmission / reception antenna 5b and the transmission / reception unit 6b and sends it to the control unit 8b (step S60). Subsequently, the control unit 8b sends the voice data stored in the storage unit 10b to the calling unit 11b, and reproduces the recorded voice from the calling unit 11b (step S61). By means of the sound reproduced in step S61, for example, the child who has the mobile phone 20B is notified that the parent who has the mobile phone 20A is moving by navigation.

  According to the control method of the present embodiment, when a parent heads by navigation to the current position of the child, the child can be notified by voice that the child is moving by navigation. As a result, even if a child gets lost in a tourist spot where there is no land intuition, and even if the child is unfamiliar with the operation of the mobile phone 20B, it is possible to prevent the parent and child from going wrong and to find the child more quickly. Can do.

  Next, a modification of the third embodiment will be described with reference to FIG. In this modification, after the process of step S57 in the control method of the mobile phones 20A and 20B shown in FIG. 6, the process of steps S59 to S61 for reproducing the recorded voice from the calling means 11b of the mobile phone 20B is replaced. Thus, a process for displaying a notification sentence on the display means 7b is performed. In the present modification, when the mobile phone 20A navigates to the position of the mobile phone 20B in step S57, display is performed via the telephone communication network 21 toward the mobile phone 20B at the start of navigation (step S62). A request signal is transmitted (step S70).

  The mobile phone 20B receives the display request signal from the mobile phone 20A via the transmission / reception antenna 5b and the transmission / reception unit 6b and sends it to the control unit 8b (step S71). Subsequently, the control unit 8b sends the display signal stored in the storage unit 10b to the display unit 7b, and displays a message text on the display unit 7b (step S72). The message displayed in step S72 notifies the child who has the mobile phone 20B that, for example, the parent who has the mobile phone 20A is moving by navigation.

  In this modification, even if the child is unfamiliar with the operation of the mobile phone 20B and is a hearing impaired person who is difficult to talk to, the parent and child can be prevented from going wrong, and the child can be found more quickly.

  In the control method shown in FIG. 6 and FIG. 7, when the distance between the mobile phones 20A and 20B exceeds the set distance, a call is made from the mobile phone 20A to the mobile phone 20B. It is not limited. That is, which of the mobile phones 20A and 20B makes a call first may be set as appropriate, or a call may be made from the mobile phone 20B possessed by the child to the mobile phone 20A possessed by the parent.

  In each of the above embodiments, when the Bluetooth communication is disconnected, the position of the terminal is detected by the GPS receivers 1a and 1b. However, the present invention is not limited to this, and after receiving the position information of the other party The position of the terminal itself may be detected. In addition, the position detection function may be activated in advance before the short-range wireless communication is disconnected, and the position information may be transmitted immediately when the disconnection is detected. The position information may be transmitted sequentially at a predetermined time interval.

  As mentioned above, although this invention was demonstrated based on the suitable embodiment, the portable terminal device of this invention, its control method, and a program are not limited only to the structure of the said embodiment, The structure of the said embodiment To which various modifications and changes are made within the scope of the present invention.

The figure which shows the structure of the communication system using the portable terminal device which concerns on one Embodiment of this invention. The block diagram which shows the function of a portable terminal device. The flowchart which shows operation | movement of the portable terminal device which concerns on the 1st Embodiment of this invention. The flowchart which shows operation | movement of the portable terminal device which concerns on the modification of the 1st Embodiment of this invention. The flowchart which shows operation | movement of the portable terminal device which concerns on the 2nd Embodiment of this invention. The flowchart which shows operation | movement of the portable terminal device which concerns on the 3rd Embodiment of this invention. The flowchart which shows operation | movement of the portable terminal device which concerns on the modification of the 3rd Embodiment of this invention.

Explanation of symbols

1a, 1b: GPS receiving unit 2a, 2b: GPS antenna 3a, 3b: Bluetooth antenna 4a, 4b: Bluetooth communication unit 5a, 5b: transmitting / receiving antenna 6a, 6b: transmitting / receiving unit 7a, 7b: display means 8a, 8b : Control units 9a and 9b: Arithmetic units 10a and 10b: Storage units 11a and 11b: Calling means 20A and 20B: Mobile phone 21: Telephone communication network 22: Satellite network 23: Short-range wireless communication 100: Communication system

Claims (7)

A short-range communication unit that performs short-range wireless communication with other portable terminal devices;
A position detector that detects the position of the terminal;
When it is detected that ongoing short-range wireless communication with the other portable terminal device is disconnected by the short-range communication unit, refer to a storage unit that stores the telephone number of the other portable terminal device The position information indicating the position of the terminal detected by the position detection unit is sequentially transmitted to the other mobile terminal device at a predetermined time interval via the mobile phone communication network, and the other mobile terminal device A mobile phone communication unit that sequentially receives position information indicating the position of the mobile phone from the other mobile terminal device at predetermined time intervals;
When it is detected that the short-range wireless communication is disconnected, the other mobile phone indicated by the map data, the location of the terminal detected by the location detection unit, and the location information received by the mobile phone communication unit Navigation that displays the position of the terminal device and performs navigation from the position of the terminal detected by the position detection unit to the position of the other mobile terminal device indicated by the position information received by the mobile phone communication unit And
A portable terminal device comprising: The mobile terminal device according to claim 1,
The position detection unit operates when the mobile phone communication unit receives position information, and detects the position of the terminal.
The portable terminal device characterized by the above-mentioned. The mobile terminal device according to claim 1 or 2,
The navigation unit calculates a distance between a position indicated by the position information received from the other portable terminal device and a position indicated by the position information detected by the position detection unit;
The portable terminal device characterized by the above-mentioned. The mobile terminal device according to claim 3,
When the distance calculated by the navigation unit is equal to or greater than a predetermined distance, the mobile phone communication unit generates a call toward the other mobile terminal device.
The portable terminal device characterized by the above-mentioned. The short-range wireless communication is performed by Bluetooth (registered trademark).
The mobile terminal device according to claim 1, wherein the mobile terminal device is a mobile terminal device. A control method in a mobile terminal device comprising a computer,
A short-range communication step in which the computer performs short-range wireless communication with another mobile terminal device;
A position detecting step in which the computer detects a position of the mobile terminal device;
When it is detected that the short-range wireless communication ongoing with the other mobile terminal device is disconnected, the computer refers to a storage unit that stores a telephone number of the other mobile terminal device, Position information indicating the position of the mobile terminal device detected in the position detection step is sequentially transmitted to the other mobile terminal device at a predetermined time interval via the mobile phone communication network, and the other mobile terminal device A mobile phone communication step of sequentially receiving position information indicating a position from the other mobile terminal device at predetermined time intervals;
When the computer detects that the short-range wireless communication is disconnected, the map data, the position of the mobile terminal device detected in the position detection step, and the position information received in the mobile phone communication step are The position of the other mobile terminal device indicated by the position information received in the mobile phone communication step from the position of the mobile terminal device detected in the location detection step. Navigation steps to navigate to,
A control method characterized by comprising: A program for a portable terminal device comprising a computer, the computer comprising:
A short-range communication step for performing short-range wireless communication with other mobile terminal devices;
A position detecting step for detecting a position of the mobile terminal device;
When it is detected that the ongoing short-range wireless communication with the other mobile terminal device is disconnected, the mobile phone communication network is referred to a storage unit that stores the telephone number of the other mobile terminal device. Position information indicating the position of the mobile terminal device detected in the position detection step is sequentially transmitted to the other mobile terminal device at predetermined time intervals via A mobile phone communication step of sequentially receiving information from the other mobile terminal device at predetermined time intervals;
When it is detected that the short-range wireless communication is disconnected, the map data, the position of the mobile terminal device detected in the position detection step, and the other information indicated by the position information received in the mobile phone communication step The position of the mobile terminal device is displayed, and navigation from the location of the mobile terminal device detected in the location detection step to the location of the other mobile terminal device indicated by the location information received in the mobile phone communication step is performed. Navigation steps to perform,
A program characterized by having executed.

Images