JP6400962B2 - Mobile communication terminal and control program thereof - Google Patents

Description

  The present disclosure relates to control of a mobile communication terminal, and more particularly to control of a mobile communication terminal that prevents an operation while moving.

  In recent years, mobile communication terminals such as smartphones have become widespread. With the spread of such portable communication terminals, an increasing number of users operate so-called walking smartphones that operate portable communication terminals while walking. Walking smartphones may distract from the surroundings and lead to accidents. For this reason, techniques for preventing walking smartphones have been developed.

  For example, Patent Document 1 discloses a terminal device intended to ensure safety in a user premises (station premises, airports, buses, etc.). In order to achieve this purpose, the terminal device uses the ticket function, location information, and the like to enter the user's premises and the user's moving state (stopped state, walking state, train / plane / bus moving state, etc.) And the output of the content is controlled (output, stop, pause, resume, etc.) based on the detection result of the entrance state and the detection result of the movement state.

JP 2009-284255 A

  The terminal device disclosed in Patent Literature 1 stops the output of content when the user is moving at a predetermined speed or more when the user exists in a station premises or the like. For this reason, the terminal device disclosed in Patent Document 1 cannot prevent a smartphone from walking outside the station premises. Therefore, a portable communication terminal that can appropriately prevent a smartphone by walking in various places is desired.

  The present disclosure has been made in order to solve the above-described problems, and an object in one aspect is to provide a mobile communication terminal capable of appropriately preventing a smartphone while walking according to a situation around the user. Providing a control program thereof.

  According to one embodiment, a mobile communication terminal includes an access point, a communication unit for wirelessly communicating with at least one of an access point and one or more communication terminals existing in a communication area of the access point, an access point, A wireless communication device that communicates with at least one of the one or more communication terminals to identify the number of communication terminals existing in the communication area of the access point, and to detect movement of the mobile communication terminal When the movement of the mobile communication terminal is detected by the detection unit and the detection unit, when the number of communication terminals specified by the specifying unit is greater than a certain number, some or all of the functions of the mobile communication terminal are restricted. And a limiting unit.

  In one aspect, walking smartphones can be appropriately prevented according to the situation around the user of the mobile communication terminal.

  The above and other objects, features, aspects and advantages of the present invention will become apparent from the following detailed description of the present invention taken in conjunction with the accompanying drawings.

It is the figure which showed the difference in operation | movement of the smart phone according to 1st Embodiment according to the number of the communication terminals which exist in the communication area of an access point. It is a block diagram which shows the main hardware constitutions of the smart phone according to 1st Embodiment. It is a block diagram which shows an example of the function structure of the smart phone according to 1st Embodiment. It is the conceptual diagram which showed roughly the identification method of the number of the communication terminals which exist around the smart phone according to 1st Embodiment. It is a figure which shows the timing chart of the wireless communication with an access point, a smart phone, and a communication terminal. It is a figure which shows an example of the data structure of external terminal information. It is a flowchart showing a part of process which the smart phone according to 1st Embodiment performs. It is the conceptual diagram which showed roughly the method of specifying the number of terminals which exist around the smart phone according to 2nd Embodiment.

  Hereinafter, the present embodiment will be described with reference to the drawings. In the following description, the same parts and components are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

  In addition, below, the detail of the smart phone which is an example of a mobile communication terminal is demonstrated, However, A mobile communication terminal is not limited to a smart phone. For example, the mobile communication terminal may include a tablet terminal, a digital camera, an electronic dictionary, a PDA (Personal Digital Assistant), a game machine, and other electronic devices. Each embodiment described below may be combined appropriately and selectively.

<First Embodiment>
[Overview]
With reference to FIG. 1, the outline | summary of the smart phone 100 according to 1st Embodiment is demonstrated. FIG. 1 is a diagram illustrating a difference in operation of the smartphone 100 according to the number of communication terminals present in the communication area 50 </ b> A of the access point 50.

  An access point 50 is shown in FIGS. 1 (A) and 1 (B). FIG. 1A shows an example in which the smartphone 100 and nine communication terminals 200 </ b> A to 200 </ b> I exist in the communication area 50 </ b> A of the access point 50. FIG. 1B shows an example in which the smartphone 100 and one communication terminal 200A exist in the communication area 50A. Hereinafter, in order to simplify the description, one or more communication terminals (for example, communication terminals 200 </ b> A to 200 </ b> I) may be collectively referred to as communication terminal 200.

  The access point 50 functions as a relay between the smartphone 100 and the communication terminal 200 and the network. Thereby, the smart phone 100 and the communication terminal 200 can connect to a network via the access point 50, and can communicate with a communication terminal (for example, a server device) on the network. In addition, the smartphone 100 and the communication terminal 200 can communicate with each other via the access point 50. Wireless communication to the access point 50 is realized by, for example, WiFi (Wireless Fidelity) (registered trademark).

  When the user walks and performs a smartphone, he / she is obsessed with the operation of the smartphone 100 and distracts from attention to the surroundings. In particular, when there are many people around the user, the user is more likely to collide with the surrounding people. For this reason, the smartphone 100 according to the present embodiment prohibits the walking smartphone when the number of communication terminals existing around the smartphone 100 is larger than a certain number when the movement of the smartphone 100 is detected. Thereby, the user can prevent a contact accident with the surrounding people.

  As a more specific process, the smartphone 100 receives the number of connections of the communication terminal 200 to the access point 50 (hereinafter also referred to as “number of connected terminals”) from the access point 50 when detecting the movement of itself. . The smartphone 100 specifies the number of connected terminals as the number of communication terminals existing in the communication area 50A. The smartphone 100 restricts some or all of the functions of the smartphone 100 when the number of specified communication terminals is greater than a certain number. The restricted functions are, for example, an operation function of the smartphone 100, a screen display function, an application execution function, and the like. Thereby, since the user cannot operate the smartphone 100, the smartphone 100 can prevent a walking smartphone. On the other hand, when the number of people around the user is small, there is almost no possibility that the user will collide with the surrounding people. Therefore, the smartphone 100 does not limit the function when the number of specified communication terminals is less than a certain number. .

  As a more specific example, a case will be described in which the number of communication terminals serving as a reference for limiting the function of the smartphone 100 is set to five. In the situation shown in FIG. 1A, since nine (> 5) communication terminals 200A to 200I exist in the communication area 50A, the smartphone 100 restricts some or all of its functions. . Further, in the situation shown in FIG. 1B, since one (<5) communication terminal 200A exists in the communication area 50A, the smartphone 100 does not restrict its function. As described above, the smartphone 100 can determine whether to restrict the function of the smartphone 100 according to the number of people around the user, and can appropriately walk and restrict the smartphone according to the situation around the user.

[Hardware configuration]
With reference to FIG. 2, an example of a hardware configuration of smartphone 100 according to the first embodiment will be described. FIG. 2 is a block diagram illustrating a main hardware configuration of the smartphone 100. As shown in FIG. 2, the smartphone 100 includes a ROM (Read Only Memory) 1, a CPU (Central Processing Unit) 2, a RAM (Random Access Memory) 3, a sensor 4, a monitor 5, and a speaker 6. , A GPS (Global Positioning System) controller 7, a network interface (I / F) 8, and a storage device 20.

  The ROM 1 stores an operating system (OS), a control program (boot program) executed by the smartphone 100, and the like. The CPU 2 (processor) controls the operation of the smartphone 100 by executing various programs such as an operating system and a control program for the smartphone 100. The RAM 3 functions as a working memory and temporarily stores various data necessary for program execution.

  The sensor 4 detects the movement of the smartphone 100. The sensor 4 includes, for example, an acceleration sensor, an angular velocity sensor, and other sensors that can detect the movement of the smartphone 100. The monitor 5 displays a screen (hereinafter also referred to as “prohibited screen”) indicating that the function is restricted while the function of the smartphone 100 is restricted. For example, the monitor 5 displays an image including characters indicating function restriction as a prohibited screen. Since the user cannot operate the monitor 5 configured as a touch panel while the prohibited screen is displayed, a walking smartphone is prevented. The speaker 6 outputs by voice that the function is restricted while the function of the smartphone 100 is restricted.

  The GPS controller 7 receives three or more GPS signals or position signals (positioning signals) from the base station via the antenna 7A, and outputs the received signals to the CPU 2. The CPU 2 calculates the current position from three or more GPS signals. Or CPU2 specifies the present position of smart phone 100 based on a position signal. The current position is used for detecting the movement of the smartphone 100.

  The network I / F 8 transmits / receives data to / from other communication devices via the antenna 8A. Other communication devices are, for example, the access point 50 (see FIG. 1), the communication terminal 200 (see FIG. 1), other smartphones, personal computers, server devices, and other electronic devices having communication functions. Smartphone 100 may be configured to download a program for realizing various processes according to the present embodiment via antenna 8A.

  The storage device 20 includes, for example, a storage medium such as eMMC (Embedded MultiMediaCard). The eMMC includes a NAND flash memory and a control circuit. Storage device 20 stores a program for realizing various processes according to the present embodiment, external terminal information 21 and the like. Details of the external terminal information 21 will be described later. Further, the storage device 20 may store a program such as an operating system.

  A program for realizing various processes according to the present embodiment may be provided by being incorporated in a part of an arbitrary program instead of a single program. In this case, processing according to the present embodiment is realized in cooperation with an arbitrary program. Even such a program that does not include some modules does not depart from the spirit of the smartphone 100 according to the present embodiment. Furthermore, part or all of the functions provided by the program according to the present embodiment may be realized by dedicated hardware. Furthermore, it is not necessary for the server device side to execute all functions, and the smartphone 100 and the server device may cooperate to implement the processing according to the present embodiment. Furthermore, the smartphone 100 may be configured in a form such as a so-called cloud service in which at least one server device realizes processing according to the present embodiment.

[Function configuration]
The function of the smartphone 100 will be described with reference to FIG. FIG. 3 is a block diagram illustrating an example of a functional configuration of the smartphone 100. As shown in FIG. 3, the smartphone 100 includes a CPU 2 and a communication unit 210. The CPU 2 includes a specifying unit 220, a detection unit 230, and a restriction unit 240.

  The communication unit 210 includes, for example, the network I / F 8 shown in FIG. 2 and other communication devices having a communication function. The communication unit 210 is wireless with at least one of the access point 50 (see FIG. 1) and one or more communication terminals (for example, the communication terminal 200 in FIG. 1) existing in the communication area 50A of the access point 50. connect. That is, the communication unit 210 may be configured to be able to communicate with the access point 50, or may be configured to be able to communicate with a communication terminal. The case where the communication unit 210 is configured to be able to communicate with a communication terminal will be described in the following “second embodiment”. When the communication unit 210 is configured to be communicable with the access point 50, the communication unit 210 receives the number of communication terminals connected to the access point 50 (that is, the number of connected terminals) from the access point 50. The communication unit 210 outputs the received number of connected terminals to the specifying unit 220.

  The specifying unit 220 specifies the number of communication terminals existing in the communication area 50 </ b> A of the access point 50 by performing wireless communication with at least one of the access point 50 and the communication terminal 200 via the communication unit 210. . That is, the specifying unit 220 may specify the number of communication terminals in the communication area 50A by performing wireless communication with the access point 50, or by specifying the number of communication terminals in the communication area 50A by performing wireless communication with the communication terminal. May be specified. The case where the specifying unit 220 wirelessly communicates with a communication terminal to specify the number of communication terminals in the communication area 50A will be described in the following “second embodiment”. In a certain aspect, the specifying unit 220 specifies the number of connected terminals obtained from the communication unit 210 as the number of communication terminals existing in the communication area 50A.

  The detection unit 230 detects that a walking smartphone is being performed by detecting the movement of the smartphone 100. More specifically, the detection unit 230 determines that the distance between the current position of the smartphone 100 obtained from the GPS controller 7 (see FIG. 2) and the position of the smartphone 100 a certain time ago (for example, several seconds ago) If the smartphone 100 is moving when it is separated by a certain distance or more (for example, several meters or more).

  In another aspect, the detection unit 230 determines that the smartphone 100 is moving when the output value from the sensor 4 (see FIG. 2) such as an acceleration sensor is greater than a certain value. In addition, the detection unit 230 may use a movement detection method disclosed in Japanese Patent Application Laid-Open No. 2014-045325 or a movement detection method disclosed in Japanese Patent Application Laid-Open No. 2005-051427. When detecting the movement of the smartphone 100, the detection unit 230 outputs information indicating that the smartphone 100 is moving to the restriction unit 240.

  In the case where the movement of the smartphone 100 is detected by the detection unit 230, when the number of communication terminals specified by the specification unit 220 is greater than a certain number, the restriction unit 240 sets a part or all of the functions of the smartphone 100. Restrict. For example, the restriction unit 240 restricts an operation function for the smartphone 100, a screen display function, an application execution function, and the like. Thereby, the user cannot use the smartphone 100 while walking.

[Method for specifying number of connected terminals (details of specifying unit 220)]
Details of the specifying unit 220 will be described with reference to FIGS. 4 and 5. FIG. 4 is a conceptual diagram schematically showing a method for identifying the number of communication terminals existing around the smartphone 100. FIG. 5 is a diagram illustrating a timing chart of wireless communication between the access point 50, the smartphone 100, and the communication terminal 200.

  As shown in FIG. 4, a case where N communication terminals 200 </ b> A to 200 </ b> N perform wireless communication with the access point 50 will be described. Each of the communication terminals 200 transmits a connection request for connecting to the network 52 to the access point 50. Since the position of the access point 50 is unknown, the connection request is transmitted by broadcast. When the access point 50 receives a connection request from each of the communication terminals 200, the access point 50 establishes a network connection. Thereafter, the access point 50 transmits a response indicating that the network connection has been successfully established to each communication terminal, and updates the number of connected communication terminals managed by the access point 50 (that is, the number of connected terminals).

  As a more specific example, it is assumed that the communication terminal 200A transmits a connection request to the access point 50 as shown in FIG. When the access point 50 receives a connection request from the communication terminal 200 </ b> A, the access point 50 executes processing for connecting to the network 52. When the network connection is established, the access point 50 transmits a response indicating that the network connection has been successfully established to the communication terminal 200A, and updates the number of connected terminals managed in the memory. As a result, the number of connected terminals is updated to “1”. Thereafter, when each of the communication terminals 200B to 200N transmits a connection request, the access point 50 executes a connection process similar to that described above. As a result, the access point 50 updates the number of connected terminals to “N”.

  The communication unit 210 of the smartphone 100 transmits a request for acquiring the number of connected terminals to the access point 50. In response to this request, the access point 50 transmits the number of connected terminals (“N” in the example of FIG. 5) to the smartphone 100. The specifying unit 220 of the smartphone 100 specifies the received number of connected terminals (that is, “N”) as the number of communication terminals existing in the communication area 50 </ b> A of the access point 50.

[Data structure of external terminal information 21]
With reference to FIG. 6, the management method of the external terminal information by the smart phone 100 is demonstrated. FIG. 6 is a diagram illustrating an example of the data structure of the external terminal information 21.

  The external terminal information 21 is stored in the storage device 20 (see FIG. 2) of the smartphone 100, for example. The external terminal information 21 includes information related to the access point to which the smartphone 100 is currently connected. More specifically, the external terminal information 21 includes an access point name 21A, the number 21B of communication terminals connected to the access point, and connection terminal information 21C related to the communication terminal.

  The smartphone 100 periodically updates the external terminal information 21 by communicating with the access point every predetermined time (for example, several seconds). More specifically, the smartphone 100 acquires the number of connected terminals at regular time intervals from the access point, and periodically updates the number of connections 21 </ b> B included in the external terminal information 21.

  In addition, when there is a change in the connected access point, the smartphone 100 updates the access point name 21A. In this case, the communication unit 210 acquires the communication terminal from the newly connected access point and updates the connection number 21B. Moreover, the smart phone 100 acquires the information of the communication terminal connected to the new access point, and updates the connection terminal information 21C.

  As described above, the smartphone 100 periodically updates the access point name 21A, the number of connections 21B, and the connection terminal information 21C. The specifying unit 220 of the smartphone 100 refers to the external terminal information 21 to acquire the number of connections 21B, and specifies the acquired number of connections 21B as the number of communication terminals existing in the communication area 50A of the access point 50.

[flowchart]
The control structure of the smartphone 100 will be described with reference to FIG. FIG. 7 is a flowchart showing a part of the process executed by smartphone 100. The processing in FIG. 7 is realized by the CPU 2 executing a program. In other aspects, some or all of the processing may be performed by circuit elements or other hardware.

  In step S50, the CPU 2 acquires, as the communication unit 210, the number of communication terminals connected to the access point from the external terminal information 21 (see FIG. 6). Note that the CPU 2 may directly receive the number of communication terminals connected to the access point from the currently connected access point.

  In step S <b> 52, the CPU 2 detects, as the detection unit 230, that the walking smartphone is performed by detecting the movement of the smartphone 100. Since the method of movement detection is as described above, the description will not be repeated.

  In step S <b> 54, the CPU 2 determines whether or not the condition that the number of connected terminals is equal to or greater than a certain number and the movement of the smartphone 100 is detected is satisfied. When CPU 2 determines that this condition is satisfied (YES in step S54), CPU 2 switches control to step S60. If not (NO in step S54), the control is switched to step S70.

  In step S <b> 60, the CPU 2 restricts part or all of the functions of the smartphone 100 as the restriction unit 240. In addition, the CPU 2 displays a screen (that is, a prohibited screen) indicating that the function of the smartphone 100 is restricted on the monitor 5. Thereby, the CPU 2 can prompt the user to stop the walking smartphone. In addition, since the user cannot operate the monitor 5 configured as a touch panel while the prohibited screen is displayed, the smartphone 100 can prevent a walking smartphone from being performed.

  In step S62, the CPU 2 determines whether or not to update the external terminal information 21. For example, the CPU 2 periodically updates the external terminal information 21 and determines that the external terminal information 21 is to be updated when a certain time (for example, several seconds) has elapsed since the external terminal information 21 was last updated. The CPU 2 also checks whether or not the connected access point has changed, and determines that the external terminal information 21 is to be updated even when the connected access point has changed. When CPU 2 determines to update external terminal information 21 (YES in step S62), CPU 2 switches control to step S50. If not (NO in step S62), CPU 2 executes step S62 again.

  In step S <b> 70, the CPU 2 determines whether or not a prohibition screen is displayed on the monitor 5. When CPU 2 determines that the prohibit screen is displayed on monitor 5 (YES in step S70), CPU 2 switches control to step S80. If not (NO in step S70), CPU 2 switches control to step S90. In step S <b> 80, the CPU 2 cancels the prohibition screen display and cancels the function restriction of the smartphone 100.

  In step S90, CPU 2 determines whether or not to end the process according to the present embodiment. CPU2 complete | finishes the said process, for example, when the user operation which complete | finishes the process according to this Embodiment is received. When CPU 2 determines to end the process according to the present embodiment (YES in step S90), CPU 2 ends the process. If not (NO in step S90), CPU 2 switches control to step S62.

[Brief Summary]
As described above, smartphone 100 according to the present embodiment receives the number of connected terminals from the currently connected access point, and identifies the number of communication terminals present in the communication area of the access point. The smartphone 100 can prohibit a walking smartphone by restricting some or all of the functions of the smartphone 100 when there are more than a certain number of communication terminals around the user. That is, since the smartphone 100 prohibits walking smartphones when there are many people around the user, the user can avoid the danger of colliding with the surrounding people. Moreover, since the smart phone 100 does not prohibit a walking smart phone when there are few people around a user, the operativity of the smart phone 100 is not impaired.

<Second Embodiment>
[Overview]
With reference to FIG. 8, the outline | summary of 100 A of smart phones according to 2nd Embodiment is demonstrated. FIG. 8 is a conceptual diagram schematically showing a method of specifying the number of terminals existing around the smartphone 100A. The smartphone 100A according to the second embodiment specifies the number of communication terminals existing in the communication area 50A of the access point 50 by directly communicating with the communication terminal instead of specifying the number of connected terminals of the access point 50. This is different from the smartphone 100 according to the first embodiment. Since other points such as the hardware configuration are the same as those of the smartphone 100 according to the first embodiment, description thereof will not be repeated.

  A case where communication terminals 200A to 200N shown in FIG. 8 exist in communication area 50A (see FIG. 1) in access point 50 will be described. Each of communication terminals 200 </ b> A to 200 </ b> N is configured to transmit data including identification information of the communication terminal to the periphery of the communication terminal in response to the broadcast from access point 50. The data is transmitted by broadcast because the position of the access point 50 is unknown. The communication unit 210 (see FIG. 3) of the smartphone 100A receives data transmitted by broadcast from each of the communication terminals 200A to 200N. The identification unit 220 (see FIG. 3) of the smartphone 100 </ b> A uses the identification information included in each of the plurality of data received by the communication unit 210 to determine the number of communication terminals existing in the communication area 50 </ b> A of the access point 50. Identify.

  As a more specific example, it is assumed that the communication terminal 200 </ b> A illustrated in FIG. 8 receives a broadcast from the access point 50. In response to this broadcast, communication terminal 200A transmits response A (for example, ACK: Acknowledgement) to access point 50. The ACK is transmitted to notify the transmission side (that is, the access point 50) when the data transmission is normally completed. The response A includes the identification information of the communication terminal 200A and the transmission destination information (that is, the access point 50). The communication terminal 200A transmits a response A toward the surroundings by broadcasting.

  The response A is directed to the access point 50 from the communication terminal 200A. However, since the response A is transmitted by broadcast, the smartphone 100A can receive the response A. Communication between the communication terminal 200A and the smartphone 100A is realized by, for example, WiFi Direct (registered trademark). Thereby, the smartphone 100A can directly communicate with the communication terminal 200A without receiving the access point 50, and can receive the response A. The smartphone 100 acquires the identification information A and the transmission destination information from the received response A. Since the transmission destination indicates the access point 50 and the identification information A indicates the communication terminal 200A, the smartphone 100A determines that the communication terminal 200A exists in the communication area 50A of the access point 50.

  Similarly, the smartphone 100A receives the responses B to N from the communication terminals 200B to 200N, respectively, and determines that the communication terminals 200B to 200N exist in the communication area 50A. In this way, the smartphone 100A can determine that N communication terminals exist in the communication area 50A. The smartphone 100A writes the identification information of the communication terminal, the number of communication terminals, and the like in the external terminal information 21 (see FIG. 6). When detecting the movement of the smartphone 100 </ b> A, the smartphone 100 </ b> A restricts some or all of the functions of the smartphone 100 </ b> A when the number of specified communication terminals is greater than a certain number.

[Brief Summary]
As described above, smartphone 100A according to the present embodiment identifies the number of communication terminals existing in access point 50 by directly communicating with each of communication terminals 200A to 200N without using access point 50. To do. As a result, even if the smartphone 100A is blocked by an obstacle and cannot communicate with the access point, the smartphone 100A can identify the number of communication terminals existing in the communication area of the access point, and can appropriately select the walking smartphone. It becomes possible to ban.

<Third Embodiment>
The first embodiment and the second embodiment may be combined. That is, the smartphone 100 determines the number of connection terminals acquired from the access point (first embodiment) and the number of communication terminals specified based on the identification information received from each of the external terminal devices (second embodiment). ) May be combined to specify the number of terminals around the user. As the number of terminals, an average value, a maximum value, a minimum value, a total value, or the like of the acquired number of connected terminals and the number of communication terminals specified based on the identification information is adopted. As described above, the smartphone 100 can more accurately specify the number of terminals existing around by specifying the number of communication terminals by a plurality of methods.

  Since other hardware configurations and other functional configurations are the same as those in the first embodiment, description thereof will not be repeated.

<Fourth embodiment>
The smartphone 100 may be able to communicate with a plurality of access points instead of only one access point. In such a case, the smartphone 100 acquires the number of connected terminals from the access point having the strongest reception strength. Thereby, since the smart phone 100 can receive the number of connected terminals from the access point present in the nearest place, the number of terminals present in the surroundings can be accurately specified.

  Since other hardware configurations and other functional configurations are the same as those in the first embodiment, description thereof will not be repeated.

<Fifth embodiment>
When the smartphone 100 can communicate with a plurality of access points, the smartphone 100 may calculate the number of terminals existing around the smartphone 100 using the number of connected terminals acquired from each access point. For example, the average value, median value, maximum value, minimum value, or total value of the number of connected terminals acquired from each access point is adopted as the number of terminals.

  Since other hardware configurations and other functional configurations are the same as those in the first embodiment, description thereof will not be repeated.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  1 ROM, 2 CPU, 3 RAM, 4 sensor, 5 monitor, 6 speaker, 7 GPS controller, 7A, 8A antenna, 8 network I / F, 20 storage device, 21 external terminal information, 21A access point name, 21B number of connections , 21C connection terminal information, 50 access point, 100, 100A smart phone, 200, 200A-200N communication terminal, 210 communication unit, 220 identification unit, 230 detection unit, 240 restriction unit.

Claims (5)

A mobile communication terminal,
A communication unit for wirelessly communicating with at least one of an access point and one or more communication terminals existing in a communication area of the access point;
A specifying unit for specifying the number of communication terminals existing in a communication area of the access point by wirelessly communicating with at least one of the access point and the one or more communication terminals;
A detection unit for detecting movement of the mobile communication terminal;
When the movement of the mobile communication terminal is detected by the detection unit, when the number of the communication terminals specified by the specification unit is larger than a certain number, part or all of the functions of the mobile communication terminal are And a limiting unit for limiting,
The restriction unit is a portable communication terminal that releases the restriction on the function of the portable communication terminal when the movement of the portable communication terminal is not detected by the detection unit. The communication unit receives the number of communication terminals connected to the access point from the access point,
The mobile communication terminal according to claim 1, wherein the specifying unit specifies the number of connections as the number of communication terminals existing in the communication area. It said portable communication terminal further includes a display unit for displaying a screen indicating that the function of the mobile communication terminal is restricted by the restricting unit, the portable communication terminal according to claim 1 or 2. A mobile communication terminal,
A communication unit for wirelessly communicating with at least one of an access point and one or more communication terminals existing in a communication area of the access point;
A specifying unit for specifying the number of communication terminals existing in a communication area of the access point by wirelessly communicating with at least one of the access point and the one or more communication terminals;
A detection unit for detecting movement of the mobile communication terminal;
When the movement of the mobile communication terminal is detected by the detection unit, when the number of the communication terminals specified by the specification unit is larger than a certain number, part or all of the functions of the mobile communication terminal are And a limiting unit for limiting,
In response to the broadcast from the access point, each of the one or more communication terminals transmits data including identification information of the communication terminal to the periphery of the communication terminal,
The communication unit receives the data from each of the one or more communication terminals;
The identification unit is a portable communication terminal that identifies the number of communication terminals existing in a communication area of the access point using identification information included in each of the plurality of data . A program for controlling a mobile communication terminal,
The mobile communication terminal is
A processor;
A communication unit for wirelessly communicating with at least one of an access point and one or more communication terminals existing in a communication area of the access point;
The program is stored in the processor.
Identifying the number of communication terminals present in a communication area of the access point by wirelessly communicating with at least one of the access point and the one or more communication terminals;
Detecting the movement of the mobile communication terminal;
When the mobile communication terminal is present in the communication area and the movement of the mobile communication terminal is detected in the detecting step, the number of the communication terminals specified in the specifying step is constant. Restricting some or all of the functions of the mobile communication terminal when more than a number;
A program for executing a step of releasing a function restriction of the mobile communication terminal when movement of the mobile communication terminal is not detected in the detecting step .

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