JP2001268216A - Mobile terminal and its control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mobile terminal that can prevent illicit use by a 3rd party by locking the mobile terminal, with the intention of a processor of the terminal, when the possessor leaves the mobile terminal behind. SOLUTION: In the mobile terminal provided with an entry section that enters a signal for communication, a display section that displays received data and a control section that controls the operations of the entry section and the display section, the control section limits the entry operation of the entry section according to 1st control information, when receiving 1st character information including 1st control information. Furthermore, the control section releases the limit of the entry operation of the entry section according to 2nd control information, when receiving 2nd character information including the 2nd control information. Thus, when the possessor leaves the mobile terminal behind, the possessor can lock the terminal or relieve the locked terminal by its own intention so as to avoid illicit use by a 3rd party.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable terminal device, and more particularly to a portable terminal device suitable for preventing misuse by a discoverer other than the owner when misplaced.

[0002]

2. Description of the Related Art In a conventional portable terminal, as described in JP-A-11-284701, it is determined whether or not a human body is within a predetermined range in a charging device of the portable terminal in order to prevent the portable terminal from being left behind. A human body detecting means for detecting, and alarm means for issuing an alarm controlled by a detection signal of the human body detecting means are provided, and the alarm means is provided on condition that the portable terminal is in a charged state and the human body detecting means does not detect a human body. Some alarms are issued. Further, as described in Japanese Patent Application Laid-Open No. 61-26337, in the case of loss or theft, a signal for destroying a storage circuit storing an identification number is sent to disable a receiver. There is. Furthermore, as an example of a mobile phone, if a mobile phone is misplaced somewhere and the user calls the same phone five or more times within three minutes, a pre-registered message is displayed on the screen and automatically displayed. In some cases, the ring tone is locked and the ring tone sounds at the maximum volume for a predetermined time even in the manner mode or the mute setting. This lock can be released by inputting a password.

[0003]

When the technique described in Japanese Patent Application Laid-Open No. 11-284701 is used as a measure for preventing the portable terminal from being left behind, a charging device having a human body detecting means and an alarm means is required. If the mobile terminal is left behind on the road or in a transportation such as a train or a bus, the alarm does not operate and the function of preventing the mobile terminal from being left does not work.

In the case of the technique described in Japanese Patent Application Laid-Open No. 61-26337, a misplaced or lost portable terminal becomes unusable, so that misuse is prevented.
The storage circuit storing the identification number is destroyed, so even if the portable terminal is found and returned to the owner, the storage circuit must be replaced. There is such a problem.

Further, as an example of a portable telephone, if a portable telephone is misplaced somewhere, if the portable telephone is called five or more times within three minutes from the same telephone, the portable telephone is automatically locked and the ringtone is silent. If the mode or mute setting sounds at the maximum volume for a predetermined period of time, if you cannot take a call immediately while taking a bath, or set the manner mode or mute setting in a train, in a concert hall, during a meeting, etc. In such a case, there is a problem that the telephone is locked even if it is not misplaced if the call is made five or more times within three minutes from the same telephone due to an urgent business or the like. Although this lock can be released by entering a PIN,
Since the ring tone is emitted at the maximum volume for a predetermined time, there is a problem that when the owner is in a train, in a concert hall, during a meeting, or the like, it may cause trouble for people around him. In addition, since locking is performed by the number of incoming calls within the predetermined time from the same telephone, there is a problem that if the telephone number is known, it is locked irrespective of the owner's intention due to mischief of another person.

Transmission of control information such as lock using a DTMF signal of a push-button telephone was also considered in the process leading to the present invention. However, in this case, there is a problem that it cannot be used unless a user enters a telephone call. Since the control cannot be performed when the object is left behind in a place where no information is provided, the problem of the present invention cannot be solved.

An object of the present invention is to provide a portable terminal device which can be locked by the owner when the portable terminal device is misplaced, thereby preventing misuse by a third party.

[0008]

According to the present invention, there is provided a radio frequency circuit having a transmitting / receiving function, an input for inputting a signal for communication, a display for displaying received data, In a portable terminal device provided with a control unit for controlling the operation of the display unit and the display unit, the control unit performs the first control when the first character information including the first control information is received via the high-frequency circuit unit. The input operation of the input unit is restricted according to the information.

In a preferred embodiment, when the second character information including the second control information is received via the high-frequency circuit, the control unit restricts the input operation of the input unit according to the second control information. It is configured to be released.

In another preferred embodiment, when the third character information including the third control information is received via the high-frequency circuit unit, the control unit determines the position information of the portable terminal device according to the third control information. Is returned.

Further, the present invention provides a control of a portable terminal device comprising an input unit for inputting a signal for communication, a display unit for displaying received data, and a control unit for controlling operations of the input unit and the display unit. In the method, the control unit detects first character information including the first control information from the received signal, and the control unit restricts an input operation of the input unit according to the first control information. It is.

In a preferred embodiment, after the control unit restricts the input operation of the input unit, when the control unit detects the second character information including the second control information from the received signal, The control unit releases the restriction on the input operation of the input unit in accordance with the control information of item 2.

Further, the present invention provides a control of a portable terminal device including an input unit for inputting a signal for communication, a display unit for displaying received data, and a control unit for controlling operations of the input unit and the display unit. In the method, the control unit detects third character information including third control information from the received signal, and the control unit returns the position information of the mobile terminal device according to the third control information. Things.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
This will be described with reference to FIGS. As shown in FIG. 1, in the present embodiment, the portable terminal device 1 includes an antenna 10, a high-frequency circuit unit 20, a control unit 30 connected to the high-frequency circuit unit 20, and a ROM 40 connected to the control unit 30. , RAM5
0, a display unit 60, and an input unit 70. The high-frequency circuit unit 20 includes a transmission unit 22 and a reception unit 24, and has a function of transmitting and receiving signals. The control unit 30 has a central processing unit (hereinafter referred to as C).
The CPU 35 controls the operation of the portable terminal device including the input unit 70 and the display unit 60 based on the system program stored in the ROM 40 and the data stored in the RAM 50. In the present embodiment, the display unit 60 is constituted by a liquid crystal display (hereinafter, LCD), and the high-frequency circuit unit 2
0, the input data input from the input unit 70, and the data displayed in association with the operation of the control unit 30. The input unit 70 has an input key,
A signal for controlling the control unit 30 is input, and a signal for communication including character information such as a destination address or a telephone number and mail is input.

The portable terminal device specifically includes a mobile terminal or a portable telephone. In the case of a portable telephone, an audio circuit unit (shown in the figure) which is electrically connected to the high-frequency circuit unit 20 and controlled by the control unit 30. ), A transmitter (not shown) and a receiver (not shown) connected to the audio circuit unit, and a ringer generator (not shown) controlled by the control unit 30 are added as constituent elements. Is done. The mobile terminal device according to the present embodiment has a function of transmitting and receiving an email regardless of whether it is a mobile terminal or a mobile phone.

In this embodiment, as shown in FIG. 2, when a mail is received via the high-frequency circuit unit 20 (step 201), the control unit 30 transmits character information including control information (hereinafter, command). It is determined whether it is included in the mail (step 202). If the command is included, the type of the command is determined (step 203), and according to the type of the command, each processing program for restricting the input operation of the input unit, releasing the restriction of the input operation, and returning the position information of the portable terminal device ( (300), (330), and (360).
If it is determined in step 202 that the command is not included, normal mail reception is performed (step 21).
0).

When a command for restricting the input operation of the input unit 70 is detected as the first control information, the control unit 30 proceeds to the processing program 300. In the present embodiment, a command called "LOCK" or "lock" is used as a command for restricting the input operation, and if used alone, it may malfunction if it happens to appear in the text of an e-mail, so it is used in combination with a password. . For example,
The four-digit password “1234” is registered in the portable terminal device. As shown in FIG. 3, when the first character information “LOCK1234” is received via the high-frequency circuit unit 20, the control unit 30 determines whether the password is correct (step 301). Input unit 7 according to control information
0 is locked (step 302), and a lock state is displayed on the display unit (step 303). If the password is not correct in step 301, the command is invalidated, and normal mail reception is performed without locking (step 210). In the locked state, the input unit 70 is set so that only the input of the numeric keys (0, 1, 2,..., 9) of the dial keys is enabled, and the input numeric value is not treated as either a telephone number or a mail address. You. As a result, in the locked state, the mobile terminal device can receive but cannot transmit. At this time, the display unit 60 displays that the portable terminal cannot be operated in a locked state as shown in FIG. 6, that the portable terminal has been misplaced (lost item), and a report request to the police.

When a command for releasing the restriction on the input operation of the input unit 70 is detected as the second control information, the control unit 30 proceeds to the processing program 330. In the present embodiment, as a command for releasing the input operation restriction, “UNLO
A command "CK" or "cancel" is used, and this is also used in combination with a password as in the case of the "LOCK" command. For example, a four-digit password "123
When the portable terminal device having "4" is locked, FIG.
As shown in (2), when the second character information “UNLOCK 1234” is received via the high-frequency circuit unit 20, the control unit 30 determines whether the password is correct (step 3).
31) If correct, input unit 70 according to the second control information
Is unlocked (step 332). When the locked state is displayed on the display unit 60, the display is erased. If the password is not correct in step 331, the command is invalidated and normal mail reception is performed without unlocking (step 210). In the present embodiment, the unlocking is also performed by e-mail. Therefore, if the portable terminal device is misplaced, even if a third party who does not know the owner at all finds and transmits the portable terminal device, it must know both the email address and the password of the portable terminal device. Unable to unlock and get double security. In addition, since it is extremely unlikely that a third party other than the owner knows both the e-mail address and the password at the same time, there is almost no possibility of being locked by mischief.

When a command for returning the position information of the portable terminal device is detected as the third control information, the control unit 30
Shifts to the processing program 360. In the present embodiment, the command for returning the position information of the mobile terminal device is “R
The command “EAD” or “position readout” is used, and is also used in combination with the password as in the case of the “LOCK” command. In this case, in addition to the password, the return destination of the position information can be designated.
As a return destination, a telephone number or an e-mail address can be used. For example, when the holder forgets to place the portable terminal device having the four-digit password “1234” somewhere and wants the location information to be returned to the telephone number “456-7890”, the third “READ1234, 4567890” Is received via the high frequency circuit unit 20, the control unit 30 determines whether the password is correct (step 361) as shown in FIG.
In accordance with the control information, the position information of the place where the holder left the portable terminal device is returned to the telephone number "456-7890" by e-mail (step 362). Step 36
If the password is not correct in step 1, the command is invalidated, and normal mail reception is performed without returning the position information mail (step 210). As the position information, the latitude and longitude (for example, 140 ° 13 minutes east longitude, 35 ° 20 minutes north latitude) of the base station with which the portable terminal device is communicating, or the location of the base station (for example, Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture) Address). If the portable terminal device has a GPS function and the return destination telephone has a display capable of displaying graphics, the approximate location of the portable terminal device may be shown on a map. As a result, the place where the portable terminal device is left behind or the place where the portable terminal device is currently located can be easily grasped, and it becomes easy to find the place.

The present invention is not limited to the above embodiment. For example, in the case of a mobile phone, the command "H
"EAR" command and set "HEAR123"
The sound around the misplaced mobile telephone for the character information "4" may be sent back to the telephone that sent the mail. If a sound familiar to the holder appears in the returned sound, the location can be easily estimated. In addition, for example, a voice synthesizing device is built in a portable terminal device, and a command “TALK” is set to “TALK”.
In response to the character information "1234", a sound "This mobile terminal device has been forgotten. Please report to the police."

In this embodiment, since character information is used, various commands can be set, and various operations can be set. Further, locking can be performed by one transmission, and abuse prevention measures by a third party can be promptly taken. Further, in the present embodiment, since the character information including the control information is transmitted using the mail, when the portable terminal device is a mobile phone, the character information can be received without entering the call mode, and based on the control information. Operation can be ensured. E-mail is C-mail or e
Email or the like can be used. In recent years, mail can be transmitted and received not only from mobile terminal devices including mobile phones, but also from push-button public phones in town. Therefore, in this embodiment, if the portable terminal device is left somewhere, it can be locked even from a push-button public telephone in the city, and a third party can find the portable terminal device and perform a call or communication. Even if you have begun, you can reduce the damage early.

[0022]

According to the present invention, when the portable terminal device is misplaced, it can be locked at the will of the holder, and a portable terminal device capable of preventing misuse by a third party can be obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a portable terminal device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a main part of the operation of the mobile terminal device according to the embodiment of the present invention.

FIG. 3 is a flowchart showing a lock operation of the mobile terminal device according to the embodiment of the present invention.

FIG. 4 is a flowchart showing an unlocking operation of the portable terminal device according to one embodiment of the present invention.

FIG. 5 is a flowchart showing a position information returning operation of the portable terminal device according to the embodiment of the present invention.

FIG. 6 is a diagram illustrating an example of a display screen during a lock operation of the mobile terminal device according to the embodiment of the present invention.

[Explanation of symbols]

1: mobile terminal device, 10: antenna, 20: high-frequency circuit unit, 22: transmitting unit, 30: control unit, 35: CPU, 4
0: ROM, 50: RAM, 60: display unit, 70: input unit.

Continued on the front page (72) Inventor Akio Shinagawa 1410 Inada, Hitachinaka-shi, Ibaraki Pref. Digital Media Products Division, Hitachi, Ltd. F-term in product division (reference) 5K027 AA11 BB09 CC08 EE13 FF12 FF22 FF25 HH11 HH24 KK03 MM04 MM17 5K067 AA32 BB04 DD27 DD53 FF03 FF13 FF20 FF23 FF26 GG12 HH24 HH36 5K101 NN12 NN14 UU06 UU16

Claims (6)

[Claims] 1. A high-frequency circuit section having a transmission / reception function, an input section for inputting a signal for communication, a display section for displaying received data, and a control section for controlling operations of the input section and the display section. In the portable terminal device provided with, when the first character information including the first control information is received via the high-frequency circuit unit, the control unit performs an input operation of the input unit according to the first control information. A portable terminal device configured to restrict. 2. The control section according to claim 2, wherein said second character information including second control information is received via said high-frequency circuit section, and restricts an input operation of said input section in accordance with said second control information. 2. The method according to claim 1, wherein the canceling is performed.
The portable terminal device according to the above. 3. The control section returns position information of the portable terminal device according to the third control information when third character information including third control information is received via the high-frequency circuit section. 2. The apparatus according to claim 1, wherein
The portable terminal device according to the above. 4. A control method for a portable terminal device comprising: an input unit for inputting a signal for communication, a display unit for displaying received data, and a control unit for controlling operations of the input unit and the display unit. Wherein the control unit detects first character information including first control information from a received signal, and the control unit restricts an input operation of the input unit according to the first control information. Control method for a mobile terminal device. 5. When the second character information including the second control information is detected by the control unit from a received signal after the control unit restricts an input operation of the input unit, the control unit controls the input operation. The method according to claim 4, wherein the control unit releases the restriction on the input operation of the input unit according to the control information of (2). 6. A control method for a portable terminal device comprising: an input unit for inputting a signal for communication; a display unit for displaying received data; and a control unit for controlling operations of the input unit and the display unit. Wherein the control unit detects third character information including third control information from a received signal, and the control unit returns position information of the portable terminal device according to the third control information. Control method for a mobile terminal device.