JP2002112346A - Distance notice system and distance notice method, and distance notice device and portable communication terminal used therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a distance notice system and a distance notice method that can notice a user of a portable communication terminal about information with respect to a distance between itself and a specific opposite party, and to provide a distance notice device and the mobile communication terminal used therefor. SOLUTION: The distance notice system allows a terminal A being a PHS terminal 1 to transmit a telephone number of a terminal B being other PHS terminal 1 designated by the user in advance and a distance desiring the notice to a service center 11 via a base station 3. The system allows the terminals A, B to receive a GPS signal from a GPS satellite and to individually measure their own positions. The system allows the service center 11 to receive position information from the terminals A, B and to calculate the distance between the terminals A, B on the basis of the received position information. When the calculated distance reaches the distance designated by the user, the system allows the service center 11 to transmit an alarm ringing instruction to the terminals A, B so as to generate an alarm tone at the terminals A, B. Thus, the system can easily inform the user of the terminal A that the user of the terminal B approaches the terminal A by a prescribed distance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distance notification system and a distance notification method for notifying a user of a portable communication terminal such as a portable telephone of a distance to another portable communication terminal, and a distance notification device and a distance notification device used therefor. The present invention relates to a mobile communication terminal.

[0002]

2. Description of the Related Art In recent years, portable telephones (including PHS terminals) have been used as portable communication terminals constituting a wireless communication system.
Are common. Particularly, in recent mobile phones, for example, the function of a device such as playing a favorite music as a ringing tone or displaying a color image has been improved, and various types of services from a service center such as a base station have been improved. The function as an information terminal for receiving services, for example, services such as provision of information such as e-mail, weather forecast, and news, has been improved.

[0003]

However, as described above, despite the fact that the function as an apparatus or the function as an information terminal has been improved, for example, when a friend is waiting for a meeting, If you want to know if you're coming too close, you still have to call the person, ask where they are, and judge it yourself. For this reason, there have been many cases where a call is made to the other party unnecessarily, even though the other party is coming very close or, conversely, oneself is very close to the other party.

Regarding this point, for example, Japanese Patent Laid-Open No.
No. 00008 and JP-A-9-43336,
A system is described in which distant vehicles exchange position data measured by a GPS receiver with each other via a wireless telephone line, and individually calculate a relative position and a relative distance with each other on each vehicle side. . However,
In such a system, the distance between the two devices is separately calculated in both devices, which is wasteful as a system. If the system is used as it is in a mobile phone, the device can be reduced in size and reduced in size. It was not realistic, as it was a factor that hindered power consumption and cost reduction.

The present invention has been made in view of the above circumstances, and a distance notification system and a distance notification method capable of notifying a user of a portable communication terminal of information on a distance to a specific partner, and An object of the present invention is to provide a distance notification device and a mobile communication terminal used for the device.

[0006]

According to the first aspect of the present invention, there is provided a portable communication terminal and a distance notification device capable of communicating with the portable communication terminal.
The distance notification device includes first position information indicating a position of the mobile communication terminal, and second position information indicating a position of another mobile communication terminal.
Position information acquiring means for acquiring the position information of the portable communication terminal and calculating the distance between the portable communication terminal and the other portable communication terminal based on the first and second position information acquired by the position information acquiring means. When the calculation result by the calculation means is equal to or shorter than a predetermined distance, the transmission means transmits notification information notifying the fact to the mobile communication terminal, and the mobile communication terminal transmits the notification information from the distance notification device. Receiving means for receiving the received notification information, and notification means for notifying that the notification information has been received by the receiving means.

In such a configuration, the distance notification device
The first position information of the mobile communication terminal and the second position information of the other mobile communication terminal are obtained, and the distance between the two mobile communication terminals is calculated from both the obtained positions. In the following cases, the fact is notified to the portable communication terminal.
Further, the mobile communication terminal notifies the user of the notification from the distance notification device. Therefore, the user of the portable communication terminal can be notified that the distance between the other portable communication terminals has become equal to or less than the predetermined distance.

Further, according to the invention of claim 2, the portable communication terminal includes a distance notification device capable of communicating with the portable communication terminal, and the distance notification device determines a position of the portable communication terminal. Position information acquiring means for acquiring first position information indicating the first position information and second position information indicating the position of another portable communication terminal, and based on the first and second position information acquired by the position information acquiring means. Calculating means for calculating a distance between the mobile communication terminal and the other mobile communication terminal, and transmission means for transmitting a calculation result by the calculation means to the mobile communication terminal, wherein the mobile communication terminal includes: Receiving means for receiving the calculation result transmitted from the distance notification device,
And a notifying means for notifying the calculation result received by the receiving means.

In such a configuration, the distance notification device acquires the first position information of the portable communication terminal and the second position information of the other portable communication terminal, and obtains both the portable communication terminals from both the acquired positions. The distance between them is calculated, and the calculation result is sent to the mobile communication terminal. Further, the mobile communication terminal notifies the user of the calculation result sent from the distance notification device. Therefore,
The user of the portable communication terminal can be notified of the distance between the other portable communication terminals.

According to a third aspect of the present invention, there is provided a distance notification device capable of communicating with a plurality of portable communication terminals, wherein first position information indicating a position of the portable communication terminal, and another portable communication terminal. A position information acquisition unit that acquires second position information indicating a position of the terminal; and the portable communication terminal and the other portable communication terminal based on the first and second position information acquired by the position information acquisition unit. Calculating means for calculating a distance between the mobile communication terminal and a notification information for causing the mobile communication terminal to perform a notification operation for notifying a user of the fact that the calculation result by the calculation means is equal to or less than a predetermined distance to the mobile communication terminal. And transmission means for performing the above.

Further, according to the invention of claim 4, there is provided a distance notification device capable of communicating with a plurality of portable communication terminals, wherein first position information indicating a position of the portable communication terminal, and another portable communication terminal. A position information acquisition unit that acquires second position information indicating a position of the terminal; and the portable communication terminal and the other portable communication terminal based on the first and second position information acquired by the position information acquisition unit. Calculating means for calculating a distance between the mobile communication terminal and a transmitting means for transmitting, to the mobile communication terminal, notification information for causing the mobile communication terminal to perform a notification operation of notifying a user of a calculation result by the calculation means. did.

Further, in the invention according to claim 5, when the calculation result by the calculation means is equal to or shorter than a predetermined distance, the transmitting means performs a notification operation to notify the user of the fact to the portable communication terminal. Means for transmitting notification information to be transmitted to the portable communication terminal.

[0013] In the invention of claim 6, the predetermined distance is a specified distance specified by a user of the portable communication terminal.

[0014] According to the invention of claim 7, reception of the destination information transmitted from the portable communication terminal and receiving the other party information specifying another portable communication terminal designated by a user of the portable communication terminal is received. Means, wherein the position information obtaining means indicates first position information indicating a position of the portable communication terminal and a position of the other portable communication terminal specified by the destination information received by the receiving means. Second
It is assumed that the location information of is acquired.

Further, in the invention according to claim 8, the portable communication terminal includes positioning means for measuring a self-position and transmitting means for transmitting a measurement result of the positioning means, wherein the position information obtaining means comprises: The measurement result transmitted by the transmission means is obtained.

Further, in the invention of claim 9, the position information obtaining means obtains position information used for managing each mobile communication terminal in a communication system constituted by the mobile communication terminal. .

According to a tenth aspect of the present invention, there is provided a portable communication terminal capable of communicating with the distance notifying device, wherein the other portable communication terminal designated by a user and capable of communicating with the distance notifying device. Transmitting means for transmitting the destination information to be specified to the distance notification device, notification information transmitted from the distance notification device to the self, the position of the self calculated by the distance notification device and the other A mobile communication terminal comprising: a receiving unit for receiving notification information for notifying that the distance to the position of the mobile communication terminal is equal to or less than a predetermined distance; and a notifying unit for notifying that the notification information has been received by the receiving unit. And

Further, in the invention according to claim 11, the transmission means further includes means for transmitting information for specifying the predetermined distance used in the distance notification device.

According to a twelfth aspect of the present invention, there is provided a portable communication terminal capable of communicating with the distance notifying device, wherein the other portable communication terminal designated by a user and capable of communicating with the distance notifying device is provided. Transmitting means for transmitting destination information to be specified to the distance notification device; and distance information transmitted from the distance notification device to the user, wherein the distance notification device has its own position and the other portable communication terminal. And a notifying means for notifying the distance information received by the receiving means, based on the distance between the two.

According to a thirteenth aspect of the present invention, there is provided a positioning means for measuring a self-position, and the transmitting means further comprising means for transmitting a measurement result of the positioning means to the distance notification device. did.

According to the invention of claim 14, the user of the portable communication terminal of the communication system including the portable communication terminal and the distance notification device capable of communicating with the portable communication terminal is provided with another user. In a distance notification method for notifying a distance to a mobile communication terminal, a step of obtaining a position of the mobile communication terminal and a position of another mobile communication terminal, and calculating a distance between the two from the obtained positions. And a step of, when the calculation result is equal to or shorter than a predetermined distance, notifying the portable communication terminal of the fact.

According to the invention of claim 15, the user of the portable communication terminal of the communication system including the portable communication terminal and the distance notification device capable of communicating with the portable communication terminal is provided with another user. In a distance notification method for notifying a distance to a mobile communication terminal, a step of obtaining a position of the mobile communication terminal and a position of the other mobile communication terminal, and calculating a distance between both from the obtained positions. And transmitting the calculation result to the portable communication terminal.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. (First Embodiment) FIG. 1 is a diagram showing a distance notification system according to a first embodiment of the present invention. This system comprises a plurality of PHS terminals 1 which are portable communication terminals of the present invention capable of making wireless calls via a public base station (CS) in a PHS (personal handyphone system).
(Terminals A and B in the figure), a service center 11 for providing various services to users of the plurality of PHS terminals, and a GPS satellite 4. The service center 11 is connected to the public base station 3 and a public network (not shown).

As shown in FIG. 2, the service center 11 includes a control unit 12, a program data storage unit 13, a key input unit 14, a display unit 15, a wireless data transmission / reception unit 16,
It has a terminal information storage unit 17 and a distance calculation (calculation) unit 18 which is a calculation means of the present invention. The control unit 12 includes a CPU, a work memory, and the like. The control unit 12 controls the above units, transmits and receives various data to and from each PHS terminal 1 via the wireless data transmission and reception unit 16, temporarily stores data, and the like. Is performed. The program data storage unit 13 stores a program for causing the control unit 12 to perform the above-described operation and the operation described below. Key input unit 1
4 and the display unit 15 in the service center 11,
For example, it is used by an operator for data input during maintenance or the like or used for data display.

The terminal information storage section 17 is a readable and writable storage means for storing various data relating to each PHS terminal 1 during the operation of the service center 11 described later.
Further, the distance calculation unit 18 performs a predetermined distance calculation at the time of an operation described later, and operates to transmit the result to the control unit 12.
In the present embodiment, the wireless data transmitting / receiving unit 16
Function as a receiving unit, a position information acquiring unit, and a transmitting unit of the present invention.

As shown in FIG. 3, each of the PHS terminals 1 includes a radio section 22 to which an antenna 21 is connected, a voice conversion circuit 23, a speaker 24, a microphone 25, and a control section 2.
6, ROM 27, RAM 28, ringer speaker 29,
Key input unit 30, liquid crystal display unit 31, telephone directory memory 32,
GPS module 34 to which GPS antenna 33 is connected
It has. The ROM 27 stores a communication control program and an operation control program.
In accordance with the program stored in the ROM 27, the operation of each section described above is controlled while using the RAM 28 as a work memory.

The radio section 22 is a transmitting section and a receiving section of the present invention, and includes a frequency conversion section, a modem section, and the like. The frequency conversion unit converts the frequency of the transmission modulation signal input from the modem unit into a transmission signal of a predetermined radio frequency for wireless transmission to a public base station and a private base station.
1 and the received signal received by the antenna 21 is converted to an intermediate frequency and output to the modem unit. The modem unit modulates the transmission data sequence input from the voice conversion circuit 23 based on a predetermined modulation scheme, outputs a modulated transmission signal to the frequency conversion unit, and outputs the intermediate frequency signal output from the frequency conversion unit. The signal is demodulated based on a predetermined demodulation method, converted into a received data sequence, and output to the voice conversion circuit 23.

The voice conversion circuit 23 includes a codec unit, a TDMA processing unit, and the like. The codec unit expands by decoding the ADPCM audio data sent from the TDMA processing unit into a PCM audio signal on the receiving side of the codec unit, performs analog / digital conversion processing of the audio signal by the PCM, The volume and tone signals are controlled and output from the speaker 24. The codec unit has a microphone 2 on the transmitting side.
5, the audio signal converted into a PCM audio signal is compressed by encoding it into ADPCM audio data, and output to a TDMA processing unit. The TDMA processing unit
According to the TDMA system, a physical slot on a predetermined carrier transmitted from the modem unit of the radio unit 22 is extracted to output control information and voice information, and control information is added to voice information from the codec unit to add a physical slot. And a protocol formatter for outputting to the modem unit of the radio unit 22 in a predetermined time slot, and executes a communication control sequence based on a radio communication protocol with a public base station or a private base station. In addition, the CS-ID and the area number sent from the public base station are sequentially obtained and sent to the control unit 26. When a call is set for an incoming call, the telephone number of the other party obtained from the call setting message is transmitted to the control unit 26.
Send to

The key input unit 30 includes ten keys, a hold key, a call key, a record key, a play key, and the like, and function keys for assigning various functions to these keys. The liquid crystal display unit 31 is configured by a liquid crystal display (LCD), and displays various information such as a telephone number of a call destination input from the key input unit 30 under the control of the control unit 26. The ringer speaker 29 is driven at the time of an incoming call to generate a ringing sound, and at the time of an operation described later, functions as a notification means of the present invention and generates an alarm sound. The telephone directory memory 32 stores the telephone number or the like of the other party input from the key input unit 30 or acquired for an incoming call. The GPS module 34 receives the GPS signal received by the GPS antenna 33
L1 band C / A code (GPS) sent from PS satellite 4
Signals) are demodulated and decoded to determine the latitude / longitude of the current position (positioning), and send the determined latitude / longitude information and the like to the control unit 26.

Next, in the distance notification system having the above configuration, for example, when the user of the terminal A among the PHS terminals 1 shown in FIG. The operation will be described. FIG. 4 is a flowchart showing the operation of the terminal A and the service center 11, and FIG. 5 is a sequence diagram showing a communication procedure between the two.

The operation will be described below with reference to FIG. First, when the user of the terminal A dials a telephone number of a predetermined service center, a line is connected to the service center 11 via the public base station 3 and a public line network (not shown) (step SA1). When there is an incoming call (YES in step SB1), service center 11 sends predetermined guidance to terminal A (step SB2). On the other hand, the user operates the numeric keypad of the key input unit 30 to input the telephone number of the other party to be the target of the distance notification service, here, the terminal B shown in FIG. 1, and a desired distance (for example, 30 m). When the registration operation is performed, the terminal A sends the telephone number and the distance to the service center 11 (step SA2), and the service center 11 stores the received telephone number and the distance of the terminal B together with the telephone number of the terminal A in the terminal information. It is stored in the unit 17 (step SB3). This completes the service application (registration). As shown in FIG. 5, the registration operation is performed from the terminal A to the service center 11 by “Flash W
This is realized by transmitting the “ith Information Message”, and is completed by transmitting and receiving “Release Order” between both parties.

When the above registration is completed, terminal A
The S module 34 is activated to start receiving a GPS signal (step SA3), measures its own position (latitude / longitude), and stores the measurement result in the RAM 28 (step SA4). Subsequently, until an alarm sounding instruction is received from the service center 11 (N in step SA5).
O), continue the process of measuring and recording the self-position. On the other hand, the service center 11 connects the line to the terminal B of the registered telephone number and transmits a positioning start command to the terminal B (step SB4). Along with this, at terminal B,
The same operation as that of the terminal A (operation after step SA3) is started, and the operation of measuring and recording its own position is continuously performed.
Thereafter, the service center 11 sends a location registration request message (Regist) to both terminals A and B every predetermined fixed time, for example, every minute (YES in step SB5).
ration Request Order) (Step SB)
6).

When the terminal A and the terminal B receive the position registration request message (YES in step SA6), the self-position (latitude / longitude) measured immediately before is read from the RAM 28, and the position registration message (Registra
) is transmitted to the service center 11 (step SA7). The service center 11 has terminals A and B
After calculating the distance between the two terminals based on the received position information (step SB7), the calculated distance is calculated in step SB7.
It is determined whether the distance is within the distance registered in step 3 (step SB8). Here, if the distance between the terminals A and B is not within the registered distance (NO in step SB8), the process returns to step SB5, and periodically transmits a location registration request message (Registration Request Order). The process of calculating the distance between the terminals A and B is continued.

Thereafter, the distance between the terminals A and B decreases during the repetition of the above processing, and when the distance calculated in step SB7 decreases to the registered distance (YES in step S8), An alarm sounding instruction message (Feature Nortification Message) is transmitted to A and B (step SB9), and the operation related to the distance notification service ends. On the other hand, in the terminals A and B, upon receiving the alarm sounding instruction message from the service center 11 (YES in step SA5), the GPS module 34 is stopped to stop receiving the GPS signal (step SA8), and then the ringer Speaker 29 to make an alarm sound different from that of the incoming call (step SA).
9) End the operation related to the distance notification service.

Therefore, in the distance notification system according to the present embodiment, the user of terminal A simply specifies the telephone number of terminal B and the desired distance when applying for the distance notification service. , Terminal B, that is, terminal B
When the user has approached the specified distance, the user can easily know it by the alarm sound. Similarly, the user of the terminal B can also know it. For this reason, for example, when meeting with friends, it is possible to know whether or not the other party is close to oneself, without having to call the other party and ask where he is, and he is approaching immediately The waste of calling the other party can be eliminated. In addition, the distance to receive the notification by the alarm sound can be specified by the user, so that the usability is good.

In the system according to the present embodiment, the distance between both terminals A and B is determined by the service center 11.
Is calculated, and the result is notified to the terminals A and B. For this reason, for example, after transmitting and receiving the position information of the other party between the two terminals A and B, the terminals A and B are compared with the case where the distance between the two terminals is individually calculated.
B has no burden for distance calculation and distance comparison. Therefore, even in a device such as the PHS terminal 1 which requires miniaturization, low power consumption, and low cost of the device, the above effects can be obtained while satisfying the request.

In the PHS terminal, the public base station (CS) may or may not receive the distance notification service.
Since signals are frequently transmitted and received to and from the terminal, information regarding the distance can be transmitted and received without significantly changing the communication procedure or the system configuration.

In the present embodiment, when the other party approaches the specified distance, the user is notified by an alarm sound. However, the user is notified by a display, or the PHS terminal 1 is provided with an incoming call notification. In the case of having a vibrator, the vibration may be notified.

(Second Embodiment) Next, a second embodiment of the present invention will be described.
An embodiment will be described. In the present embodiment, in a system having a configuration similar to that of the above-described first embodiment, the distance calculated by the service center 11 until the two terminals A and B approach the specified distance is calculated by the two terminals. A,
B, for displaying, that is, the liquid crystal display section 31 functions as a notification means of the present invention. FIG.
Is a flowchart showing the operation of the terminal A and the service center 11, and FIG. 7 is a sequence diagram showing a communication procedure between the two.

Hereinafter, the operation of the distance notification service according to the present embodiment will be described with reference to FIG. 6 focusing on parts different from the first embodiment. Also in the present embodiment, first, when the user of terminal A dials a telephone number of a predetermined service center, a line is connected to service center 11 (step SA101). The service center 11 receives an incoming call (step SB10).
(YES in 1), and sends predetermined guidance to terminal A (step SB102). Thereafter, terminal A starts measurement of its own position by the same operation as steps SA2 to SA5 described with reference to FIG. 4, and measures its own position until it receives a position registration request message from service center 11. Is continuously performed (steps SA102 to SA106).

In the service center 11,
By the same operation as steps SB3 to SB6 described with reference to FIG. 4, the content sent from terminal A is registered, and measurement and storage of the self-position is started at designated terminal B of the other party. Then, an operation of transmitting a location registration request message (Registration Request Order) to both terminals A and B is started (steps SB103 to SB106).

In this embodiment, the service center 11 responds to the location registration request message based on the location information sent from the terminals A and B,
After calculating the distance between B (step SB107),
The calculation result is temporarily stored in the location registration completion message (Regi
After transmission to both terminals A and B using the “Stration Accept Order” (step SB108), it is determined whether the calculated distance is within the registered distance (step SB10).
9). On the other hand, both terminals A and B periodically update their own positions (latitude / longitude) measured by a position registration request from the service center 11 in response to a position registration message (Re.
After transmission to the service center 11 together with the gistration message (step SA107), the distance calculated and transmitted by the service center 11 is sequentially displayed on the liquid crystal display unit 31 (step SA108). Thereafter, the service center 11 and the terminals A and B perform the same operation as the operation described with reference to FIG. 4, and terminates the operation related to the distance notification service.

Therefore, in the distance notification system according to the present embodiment, the user of terminal A simply specifies the telephone number of terminal B and the desired distance when applying for the distance notification service. , Terminal B changing
At a certain interval.
For this reason, if you are worried about your partner's location frequently, such as when you are meeting with friends and the next scheduled time is approaching, you need to call the partner many times It is very convenient without any. In addition, as in the first embodiment, when approaching the distance specified by the other party, it can be easily known by an alarm sound. Therefore, the same effect as in the first embodiment can be obtained.

In the present embodiment, a configuration may also be adopted in which the fact that the vehicle has approached the distance specified by the other party is displayed or displayed by vibration instead of the alarm sound. Further, such a notification may be eliminated. In this case, it is not necessary to register a desired distance when applying for the distance notification service.

In the above embodiment, the desired distance is registered when applying for the distance notification service, but the distance registered in advance in the service center 11 is used. Registration may not be required.

Further, in the above embodiment, the service center 11 sends the designated distance not only to the terminal A that has applied for the distance notification service but also to the designated partner terminal B. Up to this point, an alarm sound is generated when the two approach each other, or the distance between the two is displayed at a constant interval after the service is started. However, the service center 11 only performs the above operation on the terminal A. No problem.

Further, each PHS terminal 1 (terminals A and B)
In addition to the PS module 34, a system in which the service center 11 receives two pieces of position information individually measured by the PHS terminals 1 (terminals A and B) by the GPS module 34 and calculates a distance between the two is shown. However, the service center 11 may acquire the position information of each PHS terminal 1 (terminals A and B) by other methods. For example, the service center 11 uses the location information of each PHS terminal 1 used in the located location registration function of the PHS as a basic function of the network, that is, the CS-ID and area of the nearest public base station (CS). The configuration may be such that the position (located position) of each PHS terminal 1 (terminal A, B) is obtained from the number. In that case, each P
The GPS module 34 of the HS terminal 1 can be abolished, and there is no need to have each PHS terminal 1 send location information. Thereby, particularly in the first embodiment, each PHS terminal 1 is registered with the other party's telephone number and distance in steps SA3 and SB3 of FIG. 4 until it is determined that the distance is within the registration distance in step SB8. Service Center 1
Since there is no need to perform communication between the PHS terminals 1, the burden on each PHS terminal 1 can be further reduced. Furthermore, the service center 11 determines that two P
The position information of the HS terminal 1 is selectively switched between the latitude / longitude information received from the PHS terminal 1 and the CS-ID or the area number as needed, or one of the position information is set as the latitude / longitude, The other may be a CS-ID or area number.

In the present embodiment, the telephone number of the other PHS terminal 1 is specified as the other party to be specified when applying for the distance notification service. Designation (specific)
By doing so, a notification such as how much distance to a place to go or whether or not a certain distance has been approached may be given.

Further, as the distance notification system according to the present invention, a system including the service center 11 for providing various services to the user of the PHS terminal and the PHS terminal 1 has been described. As long as they can communicate with each other wirelessly, the present invention can be applied to a system including another service center and another portable communication terminal.

[0050]

As described above, in the present invention,
Just by letting the user of the mobile communication terminal specify the mobile communication terminal of a specific partner, the user can be notified that the distance to that partner has decreased to a predetermined distance or the distance to that partner.

Also, by designating the desired distance to the user, when the distance to the other party decreases to the specified distance, the user can be notified of the decrease, thereby improving usability.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a distance notification system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a service center.

FIG. 3 is a block diagram illustrating a PHS terminal.

FIG. 4 is a flowchart illustrating operations of the service center and the PHS terminal according to the first embodiment.

FIG. 5 is a diagram showing a service center and a PH in the embodiment.
FIG. 9 is a sequence diagram illustrating a communication procedure with an S terminal.

FIG. 6 is a flowchart illustrating operations of a service center and a PHS terminal according to the second embodiment.

FIG. 7 is a diagram showing a service center and PH in the embodiment.
FIG. 9 is a sequence diagram illustrating a communication procedure with an S terminal.

[Explanation of symbols]

 Reference Signs List 1 PHS terminal 3 Base station 11 Service center 12 Control unit 16 Wireless data transmission / reception unit 17 Terminal information storage unit 18 Distance calculation unit 29 Ringer speaker 31 Liquid crystal display unit 34 GPS module

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04Q 7/04 C

Claims (15)

[Claims] 1. A portable communication terminal, comprising: a distance notifying device capable of communicating with the portable communication terminal; the distance notifying device includes: first position information indicating a position of the portable communication terminal; Position information obtaining means for obtaining second position information indicating the position of the mobile communication terminal; and the mobile communication terminal and the other mobile communication based on the first and second position information obtained by the position information obtaining means. Calculating means for calculating the distance to the terminal; and transmitting means for transmitting, when the calculation result obtained by the calculating means is equal to or less than a predetermined distance, notification information to that effect to the mobile communication terminal, The terminal has a receiving unit for receiving the notification information transmitted from the distance notification device, and a notifying unit for notifying that the notification information has been received by the receiving unit. System. 2. A mobile communication terminal, comprising: a distance notification device capable of communicating with the mobile communication terminal; wherein the distance notification device includes: first position information indicating a position of the mobile communication terminal; Position information obtaining means for obtaining second position information indicating the position of the mobile communication terminal; and the mobile communication terminal and the other mobile communication based on the first and second position information obtained by the position information obtaining means. Calculating means for calculating the distance to the terminal; and transmitting means for transmitting a calculation result by the calculating means to the portable communication terminal, wherein the portable communication terminal transmits the calculation result transmitted from the distance notification device. And a notifying unit for notifying the calculation result received by the receiving unit. 3. A distance notification device capable of communicating with a plurality of portable communication terminals, wherein first position information indicating a position of the portable communication terminal and second position information indicating a position of another portable communication terminal. Position information obtaining means for obtaining the position information, and calculating means for calculating the distance between the mobile communication terminal and the other mobile communication terminal based on the first and second position information obtained by the position information obtaining means. And transmitting means for transmitting, to the mobile communication terminal, notification information for causing the mobile communication terminal to perform a notification operation for notifying a user of the fact that the calculation result by the calculation means is equal to or shorter than a predetermined distance. The distance notification device. 4. A distance notification device capable of communicating with a plurality of portable communication terminals, wherein first position information indicating a position of the portable communication terminal and second position information indicating a position of another portable communication terminal. Position information obtaining means for obtaining the position information, and calculating means for calculating the distance between the mobile communication terminal and the other mobile communication terminal based on the first and second position information obtained by the position information obtaining means. And a transmitting means for transmitting, to the mobile communication terminal, notification information for causing the mobile communication terminal to perform a notification operation for notifying a user of a calculation result by the calculation means. 5. The transmitting means further transmits, when the calculation result by the calculating means is equal to or shorter than a predetermined distance, a notification information for notifying the user of the fact to the mobile communication terminal to the mobile communication terminal. 5. The distance notification device according to claim 4, further comprising: 6. The distance notification device according to claim 3, wherein the predetermined distance is a specified distance specified by a user of the portable communication terminal. 7. A receiving unit for receiving destination information transmitted from the mobile communication terminal and specifying another mobile communication terminal specified by a user of the mobile communication terminal, wherein the position information obtaining unit includes: Acquiring first position information indicating a position of the portable communication terminal and second position information indicating a position of the other portable communication terminal specified by the destination information received by the receiving unit. 7. The distance notification device according to claim 3, wherein: 8. The portable communication terminal includes positioning means for measuring its own position, and transmitting means for transmitting a measurement result of the positioning means, wherein the position information acquiring means transmits the measurement result transmitted by the transmitting means. 8. Acquisition is performed.
The distance notification device according to any one of the above. 9. The communication device according to claim 3, wherein the location information acquisition unit acquires location information used for managing each mobile communication terminal in a communication system configured by the mobile communication terminal. Distance notification device. 10. A portable communication terminal capable of communicating with a distance notifying device, wherein the distance notifying device specifies destination information for specifying another portable communication terminal capable of communicating with the distance notifying device specified by a user. Transmitting means for transmitting to the distance notification device the notification information transmitted to the self, the distance between the position of the self calculated by the distance notification device and the position of the other portable communication terminal A portable communication terminal, comprising: receiving means for receiving notification information indicating that the notification information is shorter than a predetermined distance; and notification means for notifying that the notification information has been received by the receiving means. 11. The portable communication terminal according to claim 10, wherein said transmission means further comprises means for transmitting information for specifying said predetermined distance used in said distance notification device. 12. A portable communication terminal capable of communicating with a distance notifying device, wherein the distance notifying device specifies destination information for specifying another portable communication terminal capable of communicating with the distance notifying device specified by a user. Transmitting means for transmitting the distance information transmitted from the distance notification device to the self, the distance information calculated by the distance notification device based on its own position and the position of the other portable communication terminal A portable communication terminal comprising: a receiving unit that receives distance information; and a notifying unit that notifies the distance information received by the receiving unit. 13. The apparatus according to claim 10, further comprising: positioning means for measuring a self-position, wherein said transmitting means further comprises means for transmitting a measurement result of said positioning means to said distance notifying device. Mobile communication terminal as described. 14. A user of the portable communication terminal of a communication system including a portable communication terminal and a distance notification device capable of communicating with the portable communication terminal is notified of a distance between the portable communication terminal and another portable communication terminal. A distance notifying method, a step of obtaining a position of the mobile communication terminal and a position of another mobile communication terminal, a step of calculating a distance between both of the obtained positions, and a calculation result of not more than a predetermined distance. And a step of notifying the mobile communication terminal of the fact. 15. A user of the portable communication terminal of a communication system including a portable communication terminal and a distance notification device capable of communicating with the portable communication terminal is notified of a distance between the portable communication terminal and another portable communication terminal. A distance notification method for obtaining the position of the mobile communication terminal and the position of the other mobile communication terminal; calculating a distance between both of the obtained positions; Sending a distance to the terminal.