JP2007019719A - Portable terminal device, radio communication unit and usage restricting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable terminal device capable of aggressively alarming and restricting the usage of the portable terminal device if the device may be stolen while suppressing an unnecessary alarm in a comparatively safe area such as an office, thereby preventing stealing or the illegal use of the portable terminal device and preventing nuisance to people around a user. <P>SOLUTION: When the user enters a room while using a cellular phone 2 to communicate with an entrance management device 4, the cellular phone 2 is brought into an in-room mode. If a radio authentication unit 21 determines that a radio communication unit 1 is away from the cellular phone 2, an alarm is not emitted while the use of the cellular phone 2 is limited. However, only when a movement quantity detector 22 detects that the cellular phone 2 has moved, an output 25 issues an alarm. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a mobile terminal device, a wireless communication unit, and a use restriction system that issue an alarm to a mobile terminal device owner when the mobile terminal device is stolen.

  In recent years, electronic devices such as mobile phones, PDAs, and personal computers are widely used as communication means and information processing means. However, there are many cases of loss or theft due to misplacement, etc., and there is an increased risk of unauthorized use by others and leakage of personal information such as phone books. It is becoming.

  2. Description of the Related Art Conventionally, a mobile terminal device such as a mobile phone, a PDA, or a personal computer, and a wireless communication unit (key) attached to these mobile terminal devices that can be always carried by a user of the mobile terminal device, each device. During the period in which the identification code assigned to is wirelessly communicated (polling) with each other, the use restriction of the mobile terminal device is canceled, and when the wireless reception level drops below a predetermined value when the mutual distance is increased, There is known a use restriction system in which the release of the use restriction of the mobile terminal device is stopped to make the operation inoperable, and an alarm signal is issued by the mobile terminal device or the wireless communication unit (for example, see Patent Document 1). Even if the portable terminal device is stolen by this use restriction system, the user can prevent the third party from using the portable terminal device by possessing the wireless communication unit, and the portable terminal device or the wireless communication unit By sounding an alarm, it is possible to notify the user or a person around the mobile terminal device that there is a risk of the mobile terminal device being stolen.

Patent No. 293276

  However, in the conventional mobile phone device, an alarm sounds every time the mobile terminal device and the wireless communication unit are separated by a certain distance or more. This means that the user of the mobile terminal device judges that the risk of theft is low and, for example, leaves the mobile terminal device on an office desk or the like and takes the wireless communication unit to remove the seat. Even if this is the case, the alarm of the mobile terminal device will always sound, causing discomfort to people around the mobile terminal device.

  The present invention has been made in view of the above circumstances, and is capable of actively issuing an alarm when there is a risk of being stolen while suppressing the generation of an unnecessary alarm, and wireless communication. It aims to provide a unit and a usage restriction system.

  A portable terminal device of the present invention includes a paired wireless communication unit, a portable terminal side wireless unit that performs wireless communication, and a portable terminal side detection unit that detects the intensity of a radio wave used by the portable terminal side wireless unit A portable terminal comprising: an output unit that outputs an alarm; and a portable terminal side alarm control unit that controls whether or not to perform an alarm output by the output unit based on the intensity detected by the portable terminal side detection unit A device including a process detection unit that detects a process of the mobile terminal device for outputting an alarm by the mobile terminal device, and the mobile terminal side alarm control unit detects by the mobile terminal side detection unit When the intensity is below a predetermined value, when the detection is detected by the processing detection unit, the output unit is controlled to issue an alarm.

  According to this configuration, the mobile terminal device detects that it has been stolen by a third party or has been illegally operated, and while suppressing unnecessary alarms, there is a risk of being stolen. In some cases, an alarm can be actively issued.

  In addition, the mobile terminal device of the present invention includes a location detection unit that detects that the mobile terminal device exists in a predetermined area, and the mobile terminal side alarm control unit detects the location of the mobile terminal device after the location detection unit detects it. While the intensity detected by the terminal side detection unit is below a predetermined value, when the processing detection unit detects the intensity, the output unit controls to issue an alarm.

  According to this configuration, when the distance between the mobile terminal device and the wireless communication unit is a certain distance or more, in a predetermined space, for example, a narrow space such as an office, the mobile terminal device and the wireless communication unit are at a constant distance for a while. Even if the distance is more than the above, the alarm output can be stopped although the function of the mobile terminal device is limited. Thereby, it is possible to avoid disturbing the surroundings.

  Moreover, the portable terminal device of this invention contains what is provided with the function restriction | limiting control part which permits or prohibits execution of the various functions which an own station has based on the intensity | strength detected by the said portable terminal side detection part.

  According to this configuration, even if the mobile terminal device is stolen, the mobile terminal device cannot be operated unless there is a wireless communication unit near the mobile terminal device. As long as the mobile terminal device is used by a third party, it can be prevented.

  Moreover, the portable terminal device of this invention contains what the said process detection part detects that the said portable terminal device moved.

  According to this configuration, since it is possible to detect that the portable terminal device is being carried, when there is a risk of being stolen, a warning may be actively issued to the person who is carrying the portable terminal device. it can.

  Moreover, the portable terminal device of this invention contains what the said process detection part detects input operation to the said portable terminal device.

  According to this configuration, since it is possible to detect that the mobile terminal device is illegally operated, when the mobile terminal device owner is not in the vicinity, the mobile terminal device can be actively An alarm can be issued.

  A wireless communication unit of the present invention includes a paired mobile terminal device, a unit-side wireless unit that performs wireless communication, a unit-side detection unit that detects the intensity of a radio wave used by the unit-side wireless unit, and an alarm And a unit side alarm control unit that controls whether to perform alarm output by the output unit based on the intensity detected by the unit side detection unit, and a wireless communication unit comprising: A timing unit that counts a period during which the intensity detected by the unit-side detection unit is below a predetermined value, and the unit alarm control unit generates an alarm by the output unit when the timing unit counts a predetermined time Control to emit.

  According to this configuration, misplacement can be prevented by appropriately setting the time counted by the timer while suppressing the frequent occurrence of alarms by the wireless communication unit.

  The use restriction system of the present invention includes the mobile terminal device of the present invention and the wireless communication unit of the present invention.

  According to this configuration, in the mobile terminal device, the mobile terminal device detects that it has been stolen by a third party or has been illegally operated. When there is a risk of being alarmed, an alarm can be actively issued, while the radio communication unit appropriately sets the time counted by a timer while suppressing the frequent occurrence of alarms by the radio communication unit This can prevent misplacement.

  According to the mobile terminal device, the wireless communication unit, and the use restriction system of the present invention, it is possible to actively issue an alarm when there is a risk of theft while suppressing an unnecessary alarm.

Hereinafter, a mobile terminal device according to an embodiment of the present invention will be described in detail.
FIG. 1 is a conceptual diagram when an alarm is issued using a mobile terminal device according to an embodiment of the present invention when a user carrying a wireless communication unit moves.

  In FIG. 1A, it is assumed that the system user holding the wireless communication unit 1 is away from the mobile terminal device 2. At this time, the alarm output of the mobile terminal device 2 does not sound if the wireless communication unit 1 and the mobile terminal device 2 are separated from each other by a predetermined distance or more. Thereafter, in FIG. 1B, the mobile terminal device 2 itself detects that the mobile terminal device 2 itself has detected that the mobile terminal device 2 has moved, or that the user has performed some input operation on the mobile terminal device. The mobile terminal device 2 outputs an alarm only after detection.

  According to the mobile terminal device of the embodiment of the present invention, the mobile terminal device in the non-authentication area (the wireless unit or the area where the wireless reception level of the mobile terminal device is a predetermined value or less) can be stolen or used without permission. Since the alarm is output only when it is detected by the above-described method, the mobile terminal device does not output the alarm unnecessarily, and as a result, the annoyance felt by people around the mobile terminal device is eliminated. Can be reduced.

  Moreover, as an environment provided in order to use the portable terminal device having the functions of FIGS. 1A and 1B, the environment as shown in FIG. In FIG. 1C, the portable terminal device paired with the wireless communication unit has a normal mode that is set when the user is away from home, and a living room mode that is set when the user is in a room such as an office. An entrance management device installed near the door of an office or the like using a mobile terminal device (for example, as shown in FIG. 1C, the mobile terminal device is provided adjacent to the door. If you enter the room by communicating with the non-contact IC card provided in, by using short-range wireless communication, and entering and exiting from the data contents of the non-contact IC card), the mobile terminal device will automatically This is an example of switching from the normal mode to the living room mode. Here, the normal mode is a mode in which an alarm is output when the wireless communication unit and the mobile terminal device are separated from each other by a certain distance, and the living room mode is a mode in which the wireless communication unit and the mobile terminal device are separated from each other by a certain distance. In this mode, an alarm is output when the phone is moved.

  According to the mobile terminal device of such an embodiment, when the distance between the mobile terminal device and the wireless communication unit is more than a certain distance, the mobile terminal device outputs an alarm in the normal mode, but the office or the like is narrow In space, the mode is switched from the normal mode to the living room mode, so even if the mobile terminal device and the wireless communication unit are separated by a certain distance or longer, the function of the mobile terminal device is limited, but the alarm output can be stopped. . Thereby, it is possible to avoid disturbing the surroundings. Hereinafter, the portable terminal device according to the embodiment of the present invention will be described specifically, particularly with respect to the portable terminal device of FIG.

(First embodiment)
FIG. 2 is a block diagram showing a configuration of a use restriction system using the mobile terminal device according to the first embodiment of the present invention. Here, in the configuration diagram of the use restriction system using the mobile terminal device according to the first embodiment of the present invention shown in FIG. 2, a mobile phone will be described as an example of the mobile terminal device.

  The wireless communication unit 1 (key) in FIG. 2 includes an ID storage unit 11, an authentication transmission / reception unit 12, and an identification unit 13.

  The ID storage unit 11 stores the identification code of the wireless communication unit 1.

  The authentication transmission / reception unit 12 performs pairing via an antenna using radio waves for short-range communication used in RFID (Radio Frequency Identification) or UWB (Ultra Wide Band). A carrier wave including the identification code signal of the mobile phone 2 set as a pair with the wireless communication unit 1 is received by processing, and a carrier wave including the identification code signal of the wireless communication unit 1 is transmitted.

  The identification unit 13 identifies an identification code included in a carrier wave periodically received by the authentication transmission / reception unit 12, and identifies whether the identification code is the identification code of the mobile phone 2 set as a pair with the wireless communication unit 1 Authenticate by Further, the identification unit 13 measures the electric field strength of the carrier wave periodically received by the authentication transmitting / receiving unit 12, and if the measured electric field strength is larger than a predetermined value, authentication with the mobile phone 2 can be obtained. If the measured electric field strength is smaller than a predetermined value, it is determined whether the mobile phone 2 is in the authentication area or the non-authentication area by determining that the mobile phone 2 is not authenticated. .

  2 includes a wireless authentication unit 21, a movement amount detection unit 22, a portable terminal control unit 23, a portable communication transceiver unit 24, an output unit 25, and operation keys 26. The operation detection unit 27 and the wireless communication unit 31 are included.

  The wireless authentication unit 21 includes an ID storage unit 211, an authentication transmission / reception unit 212, an authentication processing unit 213, a level determination unit 214, a comparison unit 215, a function restriction control unit 216, and an alarm control unit 217. Consists of including.

  The ID storage unit 211 stores the identification code of the mobile phone 2.

  The authentication transmission / reception unit 212 performs pairing via an antenna using radio waves for short-range communication used in RFID (Radio Frequency Identification), UWB (Ultra Wide Band), or the like. A carrier wave including the identification code signal of the wireless communication unit 1 set as a pair with the cellular phone 2 is received by processing, and a carrier wave including the identification code signal of the cellular phone 2 is transmitted.

  The authentication processing unit 213 identifies the identification code included in the carrier wave received by the authentication transmitting / receiving unit 212, determines whether the identification code of the wireless communication unit 1 set as a pair with the mobile phone 2, and the determination result Is notified to the level determination unit 214.

  The level determination unit 214 starts measurement of the electric field strength of a carrier wave that is periodically received by the authentication transmission / reception unit 212. Thereafter, the level determination unit 214 compares the measured electric field strength with a reference value held by the level determination unit 214 and sends the comparison result to the comparison unit 215.

  The comparison unit 215 determines that the wireless communication unit 1 is authenticated if the measured electric field strength is greater than the reference value based on the comparison result from the level determination unit 214, and the measured electric field strength is predetermined. If it is smaller than this value, it is determined that the wireless communication unit 1 is not authenticated, and the determination result is notified to the function restriction control unit 216 and the alarm control unit 217.

  When the function restriction control unit 216 is notified from the comparison unit 215 that the wireless communication unit 1 has not been authenticated, the function restriction control unit 216 sends a use restriction request signal for requesting to restrict the function of the mobile phone 2 to the mobile terminal control unit 23. On the other hand, if the comparison unit 215 notifies that the wireless communication unit 1 has been authenticated, the use restriction request signal is not output to the portable terminal control unit 23.

  The alarm control unit 217 receives a control signal for switching from the wireless communication unit 31 to the living room mode from a control signal generation unit 313, which will be described later, and is notified from the comparison unit 215 that authentication with the wireless communication unit 1 has not been obtained, and When the movement amount detection unit 22 described later detects that the movement amount of the mobile phone 2 has been detected, the output unit 25 is controlled to output an alarm, and if the authentication with the wireless communication unit 1 is obtained, the comparison unit 215. Output from the comparison unit 215 when it is notified that the mobile phone 2 has not been authenticated, but is not notified that the movement amount of the mobile phone 2 has been detected from the movement amount detection unit 22 described later. Control is performed so that the unit 25 does not output an alarm.

  The movement amount detection unit 22 includes an acceleration sensor 221, a calculation unit 222, a memory 223, a comparison unit 224, and a determination unit 225.

  The acceleration sensor 221 detects that the mobile phone 2 has been moved. When the mobile phone 2 is moved, the acceleration sensor 221 obtains X-axis acceleration and Y-axis acceleration values from the amount of movement, and converts them into electrical signals for calculation. It outputs to 222.

  The calculation unit 222 calculates the amount of movement of the mobile phone 2 from the X-axis acceleration value and the Y-axis acceleration value sent from the acceleration sensor 221 at regular intervals, and sends them to the memory 223.

  The memory 223 stores the calculation results sent from the calculation unit 222 at regular intervals as needed, and outputs data to the comparison unit 224.

  The comparison unit 224 compares the change amount of the movement amount of the mobile phone 2 sent from the memory 223 at any time with the internal reference value held by the comparison unit 224 and outputs the comparison result to the determination unit 225. For example, take the difference between the calculation result of the movement amount sent immediately before and the calculation result of the movement amount sent now, and compare in terms of whether the difference exceeds the internal reference value. Then, the comparison result is output to the determination unit 225.

  The determination unit 225 determines whether the mobile phone 2 has been moved based on the comparison result sent from the comparison unit 224. If the determination unit 225 determines that the mobile phone 2 has been moved, the determination unit 225 provides a signal to notify the alarm control unit 217. Generate and output to the alarm control unit 217.

  The mobile terminal control unit 23 limits the execution of the functions for various functions that can be executed by the mobile phone 2 during the period when the use restriction request signal is notified from the function restriction control unit 216. Examples of restrictions by the mobile terminal control unit 23 include controlling the mobile communication transceiver unit 24 that controls the mobile phone communication process not to perform part or all of the communication process, or the speaker of the output unit 25, etc. For example, control is performed so that no sound is output to the microphone, the sound is not picked up by the microphone, the display is not displayed on the LCD, and the input operation is not accepted by the operation key 26. Note that such control is previously registered in the mobile phone 2 by the mobile phone user, and the mobile terminal control unit 23 controls the content of the control during the period when the use restriction request signal is notified from the function restriction control unit 216. By executing the above, it is possible to put an optimum restriction on the usage application of the mobile phone user.

  The output unit 25 includes a speaker, a microphone, an LCD, and the like. When an alarm output is notified from the alarm control unit 217, the output unit 25 outputs an alarm by the sound of the speaker or the blinking of the LCD.

  The operation detection unit 27 detects whether or not an input operation has been accepted by the operation key 26 during a period when the use restriction request signal is not input from the function restriction control unit 216. Input operations detected by the operation detection unit 27 include pressing of the operation key 26, contact with various touch panels (optical type, capacitance type, resistance film type, etc.), opening / closing of a case-type mobile phone, mobile phone 2 Charging process, and the like. If the operation detection unit 27 detects that an input operation has been received by the operation key 26, the operation detection unit 27 notifies the alarm control unit 217 to that effect.

  The wireless communication unit 31 includes a wireless communication transmission / reception unit 311, a determination unit 312, and a control signal generation unit 313.

  The wireless communication transmission / reception unit 311 performs transmission / reception with the room entrance management device 4 in order to open the door of the living room.

  The determination unit 312 determines whether or not the mobile phone user enters the room by determining whether the wireless communication transceiver unit 311 has established communication with the room management device 4. When it is determined to enter the room, a notification is output to the control signal generation unit 313.

  When receiving the notification from the determination unit 312, the control signal generation unit 313 outputs a control signal for setting the room mode or the normal mode to the alarm control unit 217.

The operation of the use restriction system configured as described above will be described based on the flowcharts shown in FIGS.
First, after the power is turned on (step S301), the wireless communication unit 1 transmits a search signal for notifying the start of authentication to the specific mobile phone 2 paired by the pairing process (step S302). .

  On the other hand, the mobile phone 2 is in a standby mode in which the search signal from the wireless communication unit 1 can be received. When the mobile phone 2 receives the search signal from the wireless communication unit 1 during the standby mode (step S303), the mobile phone 2 The authentication transmitting / receiving unit 212 obtains the identification code of the mobile phone 2 from the ID storage unit 211, and sends a response signal notifying that the search signal including the identification code of the mobile phone 2 has been received via the antenna. It transmits to the wireless communication unit 1 (step S304).

  When the wireless communication unit 1 receives the response signal from the mobile phone 2 (step S305), the identification unit 13 of the wireless communication unit 1 identifies the identification code included in the carrier wave received by the authentication transmission / reception unit 12, Whether the identification code of the mobile phone 2 set as a pair with the wireless communication unit 1 is identified (step S306).

  If it is determined in step S306 that the identification code included in the received carrier wave is not the identification code of the mobile phone 2, the partner is regarded as not being the mobile phone 2 set in a pair with the wireless communication unit 1, and step S302 The search signal is transmitted again, and the mobile phone 2 set as a pair with the wireless communication unit 1 is continuously searched.

  On the other hand, when it is determined in step S306 that the identification code included in the received carrier wave is the identification code of the mobile phone 2, the partner is regarded as the mobile phone 2 set in a pair with the wireless communication unit 1, The determination result is notified to the authentication transmission / reception unit 12, and the authentication transmission / reception unit 12 receives the notification, acquires the identification code of the wireless communication unit 1 from the ID storage unit 11, and transmits the identification code to the mobile phone 2 via the antenna. The identification code signal of the wireless communication unit 1 is transmitted (step S307). Thereafter, the wireless communication unit 1 periodically repeats reception of the identification code from the mobile phone 2 and transmission of the identification code signal of the wireless communication unit 1.

  The authentication transmission / reception unit 212 of the mobile phone 2 receives the identification code signal from the wireless communication unit 1 via the antenna (step S308), and the authentication processing unit 213 includes the carrier wave received by the authentication transmission / reception unit 212. The identification code included is identified, and it is determined whether it is the identification code of the wireless communication unit 1 set as a pair with the mobile phone 2 (step S309). The wireless communication unit 1 also identifies the identification code included in the received carrier wave and determines whether it is the identification code of the mobile phone 2 set as a pair with the wireless communication unit 1 (step S315).

  If it is determined in step S309 that the identification code included in the received carrier wave is not the identification code of the wireless communication unit 1, the other party is not considered to be the wireless communication unit 1 set as a pair with the mobile phone 2, and the step Returning to S303, the search signal is received again. Also in step S315, when it is determined that the identification code included in the received carrier wave is not the identification code of the mobile phone 2, the partner is regarded as not the mobile phone 2 set as a pair, and the process returns to step S302.

  The wireless communication unit 1 and the mobile phone 2 periodically transmit and receive an identification code signal between them, and in step S309, the identification code included in the received carrier wave is determined to be the identification code of the wireless communication unit 1. In this case, it is assumed that the other party is the wireless communication unit 1 set as a pair with the mobile phone 2, and the determination result is notified to the level determination unit 214, and the level determination unit 214 receives the notification from the received carrier wave. It is determined whether the received electric field strength is greater than the reference value, and the determination result is sent to the comparison unit 215. Based on the determination result, the comparison unit 215 determines whether the wireless communication unit 1 is in the authentication area or the non-authentication area. judge. The wireless communication unit 1 also periodically transmits / receives an identification code signal to / from the mobile phone 2, and in step S315, the identification unit 13 identifies the identification code included in the received carrier wave as the identification code of the cellular phone 2. If it is determined that the other party is the mobile phone 2 set as a pair with the wireless communication unit 1, it is determined whether the received electric field strength of the received carrier is greater than a predetermined value, and based on the determination result, It is determined whether the mobile phone 2 is in the authentication area or the non-authentication area (step S316).

  If it is determined in step S310 that the electric field strength being measured is greater than the reference value and the wireless communication unit 1 is in the authentication area, the process returns to step S308 to receive the identification code signal from the wireless communication unit 1 and further carry it. The identification code signal of the telephone 2 is transmitted to the wireless communication unit 1. If it is determined in step S316 that the measured electric field strength is greater than the predetermined value and the mobile phone 2 is in the authentication area, the process returns to step S307, and the identification code signal from the mobile phone 2 is received. The identification code signal of the wireless communication unit 1 is transmitted to the wireless communication unit 1.

  On the other hand, if it is determined in step S310 that the measured electric field strength is smaller than the reference value and the wireless communication unit 1 has not been authenticated and the wireless communication unit 1 is not in the authentication area, the function restriction control unit When the function restriction control signal is transmitted to 216 and the function restriction control unit 216 receives the function restriction control signal, the function restriction is performed on the mobile phone 2 (step S311).

  After the process of step S311, the alarm control unit 217 determines whether the current mobile phone 2 is in the normal mode or the living room mode (step S312).

  In the process of step S312, when the alarm control unit 217 determines that the normal mode is set, the alarm control unit 217 outputs an alarm output notification to the output unit 25. The output unit 25 receives the notification, and the sound of the speaker or the LCD An alarm is output by blinking or the like (step S313).

  On the other hand, in the process of step S312, when the alarm control unit 217 determines that the room mode is set, the comparison unit 216 also notifies the alarm control unit 217 that the wireless communication unit 1 is not in the authentication area, and the alarm control unit 217 receives the notification and determines whether the mobile phone 2 has been moved (step S314). Here, when the movement detection unit 22 always detects the movement of the mobile phone 2 and detects that the mobile phone 2 has been moved, a notification is output to the alarm control unit 217, and the alarm control unit 217 receives from the movement detection unit 22. Whether or not the mobile phone 2 has been moved is determined based on the presence or absence of the notification.

  In step S314, if the alarm control unit 217 determines that there is no notification from the movement detection unit 22 and the mobile phone 2 is not moved, the process returns to step S308, receives the identification code signal from the wireless communication unit 1, Further, the identification code signal of the mobile phone 2 is transmitted to the wireless communication unit 1.

  On the other hand, in step S314, when the alarm control unit 216 receives a notification from the movement detection unit 22 and determines that the mobile phone 2 has been moved, the alarm control unit 216 outputs an alarm output notification to the output unit 25, and the output unit 25 Upon receiving the notification, an alarm is output by voice of the speaker, blinking of the LCD, or the like (step S313).

  According to the mobile terminal device of the first embodiment of the present invention, when it is determined that the wireless communication unit is not in the authentication area, it is further determined whether the mobile terminal device has been moved, and the mobile terminal device is moved. The alarm is output only when it is determined that Thereby, it can suppress that an alarm signal emits frequently, and the troublesomeness which a mobile telephone user feels can be reduced.

  In addition, when the distance between the mobile terminal device and the wireless communication unit is more than a certain distance, the mobile terminal device outputs an alarm in the normal mode, but in a narrow space such as an office, the mode is switched from the normal mode to the living room mode. Even if the mobile terminal device and the wireless communication unit are separated from each other for a while by a certain distance, the alarm output can be stopped although the function of the mobile terminal device is limited. Thereby, it is possible to avoid disturbing the surroundings.

  In addition, when the mobile terminal device outputs an alarm, (1) inform the surrounding people of an abnormal situation. (2) If the owner of the mobile terminal device is only a few meters away, the user can also hear the alarm. (3) It is conceivable that the perpetrator himself is alarmed, and theft can be prevented.

  In the above description, the example in which the movement of the mobile terminal device is detected has been described. However, when the operation detecting unit detects that the mobile terminal device has been operated, an alarm may be output. .

  In the above description, the example in which the user holds the wireless communication unit and the portable terminal device is placed on a desk or the like has been described, but conversely, the wireless communication unit is placed on the desk and the portable terminal. Even when the user holds the device, the above-described function can be realized by providing the wireless communication unit with the movement amount detection unit, the wireless authentication unit, and the output unit.

(Second Embodiment)
Next, a wireless communication unit according to the second embodiment of the present invention will be described. The wireless communication unit according to the second embodiment of the present invention starts measuring time by a timer after authenticating that the mobile phone is in the non-authentication area, and the mobile phone even after a certain time (for example, 2 minutes) has passed. If does not return to the authentication area, an alarm is issued. That is, even if a user who has a wireless communication unit removes his / her seat for a short period of time and the distance between the mobile phone and the wireless communication unit increases, An alarm is not generated. On the contrary, if it is long, an alarm is generated. Thereby, it is possible to prevent misplacement by appropriately setting the time counted by the timer while suppressing frequent alarms generated by the wireless communication unit. In addition, since the user can notice at a suitable timing whether or not the wireless communication unit holds the mobile phone, the user can quickly return to the place where the mobile phone is placed, thereby preventing theft. The wireless communication unit according to the second embodiment of the present invention will be described below.

  FIG. 5 is a block diagram illustrating a configuration of a use restriction system using the wireless communication unit according to the second embodiment of this invention. Here, in the configuration diagram of the use restriction system using the mobile terminal device of the second embodiment of the present invention shown in FIG. 5, the same reference numerals as those in the configuration diagram shown in FIG. Therefore, the description is omitted.

  The wireless communication unit 1 (key) in FIG. 5 includes an ID storage unit 11, an authentication transmission / reception unit 12, an identification unit 13, a timer 14, and an alarm unit 15.

  The timer 14 starts timing from the time when the electric field intensity measured by the identification unit 13 becomes smaller than a predetermined value, and ends timing when the electrification strength becomes larger than the predetermined value, or the electrification thereof. If the measured time exceeds a certain time without the intensity exceeding a predetermined value, the identification unit 13 is notified of this. It is preferable to set an appropriate period according to the use environment of the mobile phone of the use restriction system user for this fixed time.

  The alarm unit 15 is configured by a speaker, an LCD, and the like. When an alarm output is notified from the identification unit 13, the alarm unit 15 outputs an alarm by voice of the speaker or blinking of the LCD.

  The identification unit 13 identifies an identification code included in a carrier wave periodically received by the authentication transmission / reception unit 12, and identifies whether the identification code is the identification code of the mobile phone 2 set as a pair with the wireless communication unit 1 Authenticate by Further, the identification unit 13 measures the electric field strength of the carrier wave periodically received by the authentication transmitting / receiving unit 12, and if the measured electric field strength is larger than a predetermined value, authentication with the mobile phone 2 can be obtained. If the measured electric field strength is smaller than a predetermined value, it is determined whether the mobile phone 2 is in the authentication area or the non-authentication area by determining that the mobile phone 2 is not authenticated. . The identification unit 13 instructs the alarm unit 15 to output an alarm when the timer 14 is notified that the timed period has exceeded a predetermined time after sending a control signal for starting timing to the timer 14.

  The operation of the wireless communication unit configured as described above will be described based on the flowchart shown in FIG. Since the processing flow of the mobile phone is the same as that described in the first embodiment, the description thereof is omitted. In addition, since the processing flow of steps S301 to S307 and S315 to S316 of the wireless communication unit is the same as that described in the first embodiment, description thereof is omitted.

  In the process of step S316, the identification unit 13 sends a control signal for starting timing to the timer 14 when it is determined that the measured electric field strength is smaller than a predetermined value and the mobile phone 2 is in the non-authentication area. (Step S601). Thereafter, when it is determined that the electric field strength being measured is greater than a predetermined value and the mobile phone 2 is in the authentication area, the identification unit 13 sends a control signal for terminating the time measurement to the timer 14.

  The timer 14 that has received the control signal for starting timing from the identification unit 13 starts timing. After that, when notified that the fixed time has elapsed from the timer 14 that has timed for a fixed time (step S602), the identification unit 13 instructs the alarm unit 15 to output a warning (S603). On the other hand, the timer 14 that has received the control signal for timing end from the identification unit 13 before timing the predetermined time ends the timing, and again receives the control signal for timing start from the identification unit 13.

  According to the wireless communication unit of the second embodiment of the present invention, it is possible to prevent misplacement by appropriately setting the time measured by the timer while suppressing frequent alarms generated by the wireless communication unit. . In addition, since the user can notice at a suitable timing whether or not the wireless communication unit holds the mobile phone, the user can quickly return to the place where the mobile phone is placed, thereby preventing theft.

  In the description of the wireless communication unit of the second embodiment, the mobile phone of the first embodiment is used. However, the wireless communication unit of the present invention performs authentication wireless communication with a conventional wireless communication unit. If the mobile phone is capable of performing the function, the function can be executed.

  As described above, the mobile terminal device, the wireless communication unit, and the use restriction system according to the present invention actively issue an alarm when there is a risk of being stolen while suppressing an unnecessary alarm. This is useful as a portable terminal device that issues an alarm to the owner of the portable terminal device when the portable terminal device is stolen.

Conceptual diagram when issuing an alarm using the mobile terminal device of the embodiment of the present invention The block diagram which shows the structure of the use restriction system using the portable terminal device of the 1st Embodiment of this invention. The flowchart figure which shows operation | movement of the use restriction system using the portable terminal device of the 1st Embodiment of this invention (the 1) The flowchart figure which shows operation | movement of the use restriction system using the portable terminal device of the 1st Embodiment of this invention (the 2) The block diagram which shows the structure of the use restriction system using the radio | wireless communication unit of the 2nd Embodiment of this invention. The flowchart figure which shows operation | movement of the use restriction system using the radio | wireless communication unit of the 2nd Embodiment of this invention.

Explanation of symbols

1 Wireless communication unit 1 (key)
2 Mobile phone 4 Room entry management device 11, 211 ID storage unit 12, 212 Authentication transmission / reception unit 13 Identification unit 21 Wireless authentication unit 22 Movement amount detection unit 23, 32 Mobile terminal control unit 24 Mobile communication transmission / reception unit 25 Output unit 26 Operation Key 27 Operation detection unit 31 Wireless communication unit 213 Authentication processing unit 214 Level determination unit 215 Comparison unit 216 Function restriction control unit 217 Alarm control unit 221 Acceleration sensor 222 Calculation unit 223 Memory 224 Comparison unit 225 Determination unit 311 Transmission / reception unit 312 for wireless communication Determination unit 313 Control signal generation unit

Claims (7)

A pair of wireless communication units, a mobile terminal side wireless unit that performs wireless communication, and
A mobile terminal side detection unit for detecting the intensity of radio waves used by the mobile terminal side radio unit;
An output unit for outputting an alarm;
Based on the intensity detected by the mobile terminal side detection unit, a mobile terminal side alarm control unit for controlling whether or not to perform alarm output by the output unit,
A portable terminal device comprising:
A process detection unit for detecting a process of the mobile terminal device for outputting an alarm by the mobile terminal device,
The mobile terminal side alarm control unit controls the output unit to issue an alarm when detected by the processing detection unit while the intensity detected by the mobile terminal side detection unit is below a predetermined value.
Mobile terminal device. The mobile terminal device according to claim 1,
A location detection unit for detecting that the mobile terminal device exists in a predetermined area;
The portable terminal side alarm control unit, when detected by the processing detection unit while the intensity detected by the portable terminal side detection unit is below a predetermined value after the location detection unit detects, the output unit Control to issue an alarm,
Mobile terminal device. The mobile terminal device according to claim 1 or 2,
A portable terminal device comprising a function restriction control unit that permits or prohibits execution of various functions of the own station based on the intensity detected by the portable terminal side detection unit. The portable terminal device according to any one of claims 1 to 3,
The process detection unit detects that the mobile terminal device has moved.
Mobile terminal device. The portable terminal device according to any one of claims 1 to 3,
The process detection unit detects an input operation to the mobile terminal device.
Mobile terminal device. A pair of portable terminal devices, a unit side wireless unit that performs wireless communication,
A unit side detection unit for detecting the intensity of radio waves used by the unit side radio unit;
An output unit for outputting an alarm;
Based on the intensity detected by the unit side detection unit, a unit side alarm control unit for controlling whether or not to perform alarm output by the output unit,
A wireless communication unit comprising:
A timing unit that counts a period during which the intensity detected by the unit-side detection unit is below a predetermined value;
The unit alarm control unit controls the output unit to issue an alarm when the timing unit counts a predetermined time,
Wireless communication unit.   A use restriction system comprising: the mobile terminal device according to any one of claims 1 to 5; and the wireless communication unit according to claim 6.

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