JP2004112448A - Mobile terminal unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile terminal unit capable of preventing the use by those other than the authorized users according to a simple structure without using a special sensor or many sensors. <P>SOLUTION: The mobile terminal unit 100 comprises an inclination sensor 109 for detecting the inclination of a housing besides a control unit 101, a memory 103, a radio section 104, and an input section 107 provided with keys, etc. The inclination of the housing in the usage state thereof is acquired by the inclination sensor for the sake of initial data to become a registered pattern, and the initial data are stored in the memory 103. After acquiring the initial data, the control unit 101 compares the inclination data detected by the inclination sensor 109 in the same usage state as above-mentioned usage state and the registered pattern stored in the memory 103. If they match each other, the mobile terminal unit 100 judges that it is used by an authorized user, and if they do not match each other the unit 100 judges that it is under unauthorized usage and issues an emergency message. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a mobile terminal device, and more particularly, to a mobile terminal device that performs a dial lock or an emergency report when a third party other than the owner attempts to use it, thereby preventing unauthorized use by a third party.
[0002]
[Prior art]
Mobile terminal devices, such as mobile telephone mobile devices, PHS (Personal Handyphone System) telephones, and PDA (Personal Digital Assistant) devices with a communication function, withdrawal of electronic money or commercial transactions on the Internet as their functions become higher. Various monetary services, such as, are expected to be provided on a daily basis in the future. However, in a service using such a mobile terminal device, it is necessary for a user to complete personal authentication based on biometrics information such as shape recognition (face shape, hand shape, etc.), fingerprints, voiceprints, etc., and to receive provision of the service. If the portable terminal device is stolen while performing necessary data input, there is a problem that the stolen third party can receive services without performing an authentication operation. . Even if a stolen mobile terminal device is used by a third party other than the owner (contractor), a means is required to disable the use.
[0003]
As a conventional mobile terminal device that provides personal authentication and provides a service, if a user matches theft of the mobile terminal device after completing personal authentication based on biometrics information, an actor such as theft (third party) The conventional portable information terminal device capable of preventing unauthorized use of the portable information terminal device includes a plurality of pressure sensors provided on a side surface or a back surface of a main body of the portable information terminal device. There is a configuration that compares the pressure sensor with the pressure sensor, and determines that the user is a user when they match with each other. When the user once leaves the hand of the holder, a request for re-authentication is made. It is possible to prevent unauthorized use over human hands (for example, see Patent Document 1).
[0004]
Another conventional configuration has a structure in which the liquid crystal display section can be pulled out and rotated, and when a secret rotation operation that can be known only to a legitimate user is added, the user is assumed to be a legitimate user. There is one that makes a determination and releases the key lock state (for example, see Patent Document 2).
[0005]
Further, as another conventional configuration, a fingerprint sensor is provided on a part of the liquid crystal screen, and fingerprint data of a regular user previously acquired and stored in a memory and fingerprint data of a person detected by the fingerprint sensor are stored. Are compared, and if they do not match, there is a device that determines that the user is an unauthorized user and prohibits the use of the device (for example, see Patent Document 3).
[0006]
[Patent Document 1]
JP-A-2001-142849 (pages 6 to 8, FIG. 1)
[Patent Document 2]
JP-A-2001-64620 (pages 5 to 6, FIGS. 2 and 3)
[Patent Document 3]
JP 2001-159052 A (pages 3 to 5, FIGS. 3 and 6)
[0007]
[Problems to be solved by the invention]
However, according to the conventional portable terminal device, the configuration of Patent Literature 1 requires a large number of sensors, increases the cost, and may change the way of holding due to fatigue, the mood of the day, and the like. Because it is difficult to obtain, it is conceivable to take time for authentication. In addition, in the configuration of Patent Document 2, the mechanism becomes complicated, there is a possibility of breakage due to insufficient strength, and it is necessary to always operate so as to draw the same angle and trajectory, and there is a problem in reproducibility. Furthermore, in the configuration of Patent Document 3, it is difficult to reduce the size of the fingerprint authentication sensor, and it is difficult to secure an installation space for adopting the fingerprint authentication sensor in a mobile phone. There are many issues.
[0008]
An object of the present invention is to provide a portable terminal device that can prevent use by unauthorized users with a simple configuration without using a special sensor or many sensors.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a portable terminal device including an input unit having a key, a storage medium storing personal information, and a control unit for controlling the entirety. A sensor, storage means for storing, as a registered pattern, initial data acquired by the inclination sensor of the inclination of the housing in a specific use situation of a user, and in the same use situation as the use situation after the acquisition of the initial data. Control means for judging use by an authorized user when the inclination data detected by the inclination sensor matches the registered pattern stored in the storage means, and judging unauthorized use when the inclination data does not match. The present invention provides a portable terminal device characterized by the following.
[0010]
According to this configuration, the inclination of the housing in a specific use situation of the user is acquired by the inclination sensor and used as a registration pattern, and then, in the same use situation as when the registration pattern is acquired, the inclination of the casing is measured by the inclination sensor. The detected data is compared with the registered pattern. If the two match, it is determined that the device is used by a legitimate user. If they do not match, it is determined that the device is illegally used. Therefore, it is possible to prevent use by unauthorized users without using a special sensor or many sensors.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a configuration of a portable terminal device of the present invention.
The mobile terminal device 100 is a mobile phone, and has a straight or foldable housing. The mobile terminal device 100 includes a control unit 101 including a CPU and including a calculation unit 102, a memory 102 connected to the control unit 101, a wireless unit 104 used for transmission and reception, and an antenna 104a connected to the wireless unit 104. A voice processing unit 105 for performing voice processing, a display unit 106, an input unit 107, a SIM unit 108 in which a SIM (Subscriber Identity Module) card 120 is loaded, a tilt sensor 109 for detecting the tilt of the housing, It includes a replaceable battery 110 for supplying power to each circuit, a speaker 111 as a receiver, and a microphone 112 as a transmitter.
[0012]
The memory 103 is a semiconductor memory including a ROM and a RAM, and includes a program for achieving a function as a mobile phone, various data associated with the execution of the program, mail data, telephone number data, schedule data, answering machine data, The memo data, the data from the tilt sensor 109, and the like are stored. Radio section 104 includes a coupling circuit, a transmission circuit, a reception circuit, a modulation circuit, a demodulation circuit, and the like, and is used when communicating with a base station. The audio processing unit 105 hands the audio information and the like from the microphone 112 to the wireless unit 104 as an audio signal, processes the digital audio information from the wireless unit 104 into an analog signal, and outputs the analog signal from the speaker 111. A liquid crystal display is used for the display unit 106, and displays status and functions, displays mail contents and telephone numbers, displays input contents by the user, and the like. The input unit 107 includes ten keys and a plurality of function keys, and a user performs desired input.
[0013]
The SIM unit 108 allows the SIM card 120 to be detachably attached, and reads out personal data of the user (contract information about the user, a telephone directory of the user registration, etc.) stored in the SIM card 120, and newly writes the data. It has a function to perform. The SIM card 120 is a stamp-sized IC chip, also called a “FOMA (Freedom Of Mobile Multimedia Access) card” or a “UIM (User Identity Module) card”, and can be attached to another portable terminal device of the same standard. Since it can be used, it excels in exchanging portable terminal devices and personal authentication.
[0014]
The tilt sensor 109 detects the tilt (angle) of the housing of the mobile terminal device 100, and for example, a gyro sensor can be used. The user has a habit for each individual, and the angle when holding the portable terminal device 100 becomes almost the same every time, and can be distinguished from others. Therefore, if the inclination or the like during use of a regular user (during a telephone call, etc.) is detected in advance and registered as a comparison value (registration pattern), it is determined whether the regular user is using it or another person uses it. It can be easily determined (authenticated) by comparing the middle to the inclination detected at that time.
[0015]
FIG. 2 shows a tilted state of the mobile terminal device 100 (mobile phone) viewed from each direction during a call. FIG. 2A shows an inclined state when the back surface of the mobile terminal device 100 is viewed (when the temporal region of the user 130 is viewed), and the upper portion (near the speaker 111) is the ear of the user 130. In the vicinity, the lower part (near the microphone 112) is (near the side of the mouth of the user 130). Since the position of the human ear and the position of the mouth are shifted with respect to the vertical direction, the inclination sensor 109 detects the inclination of the angle α from the horizontal position as shown in FIG.
[0016]
FIG. 2B shows a tilted state when the portable terminal device 100 is viewed from an angle position of 90 degrees from the state of FIG. 2A, that is, when viewed from the side (as viewed from the back of the user 130). While the upper portion of the mobile terminal device 100 is in contact with the ear, the vicinity of the microphone is usually separated from the mouth, so that the mobile terminal device 100 is in a substantially vertical position or the lower portion projects outward as shown in the figure. Become. Accordingly, the inclination sensor 109 detects the inclination of the angle β from the horizontal position (the horizontal direction of the head).
[0017]
FIG. 2C illustrates a tilted state of the mobile terminal device 100 when viewed from directly above. The ear bulge is behind the temporal region of the user 130, and the front is almost flush with the temporal surface. Therefore, the inclination sensor 109 detects the inclination of the portable terminal device 100 at an angle θ from the horizontal position of the head in the left-right direction. In this case, the inclination sensor 109 has an angle on a horizontal plane. Therefore, as the inclination sensor 109, for example, a configuration in which the left and right pressure differences are detected from a pair of pressure sensors to determine the inclination, and a distance sensor having the same principle as that used in the camera is installed on both sides of the housing. In this case, a configuration in which the inclination is obtained from the difference between the two distances or the like is used.
[0018]
As described above, when the mobile terminal device 100 is a mobile phone, at least the two angles in FIGS. 2A and 2B are detected by the tilt sensor 109. Furthermore, if the detection content of (c) can be added, the authentication accuracy can be further enhanced. The tilt data detected by the tilt sensor 109 is stored in the memory 103 under the control of the control unit 101. The inclination data stored in the memory 103 is compared with the inclination data subsequently detected by the calculation unit 102 in the control unit 101. As a result of the comparison, if the inclination data in the memory 103 and the detection information are different, the key is locked, and even if a key of the input unit 107 is operated, the input content of the key is not read and the input processing is not performed. However, reading of the power-off key, reading of the personal identification number, and the like are performed as usual.
[0019]
FIG. 3 shows a first processing example in the control unit 101. In the following flowchart, steps are represented by S.
When using the portable terminal device 100, the user registers the inclination data in advance as a registration pattern. The registration of the inclination data is performed by the user operating the input unit 107 to set the registration mode (S201). When executing the registration mode, the portable terminal device 100 guides by voice synthesis. For example, "Please hold the main unit with your usual hand" → "Please bring the main unit near your ear" → "Please take the posture when you usually talk" → "Do not move the mobile terminal device as it is "→ If you hear a beep, please wait for 5 seconds." → "Registration is completed." Thus, registration can be performed without looking at a manual or the like. In this registration, as described with reference to FIG. 2, the inclination including the inclination from the ear to the mouth of the user and the inclination of the portable terminal device 100 due to the habit of the user are stored in the memory 103 as data. Further, the inclination data in the case of normal use is accumulated and stored, and an error caused by the use state is also detected and stored together (S207).
[0020]
After the registration, when the portable terminal device 100 is used for a call or the like, the inclination is detected by the inclination sensor 109 each time (S202). If the calculation unit 102 determines that the inclination data obtained by this detection matches the inclination data (storage pattern) registered in the memory 103 (S203), the use permission is determined (S206), and the call and other users can be used. Enable the processing you want to perform.
[0021]
On the other hand, if a legitimate user is taken away by a third party while using the mobile terminal device 100, or the user misplaces it somewhere and passes it to another person's hand, and the other person tries to use it illegally, The tilt sensor 106 of the mobile terminal device 100 functions to detect tilt (S202). However, as shown in FIG. 2, the inclination (angle) when the portable terminal device 100 is used differs between the authorized user and the other person. That is, the comparison operation between the data obtained by the inclination detection in the arithmetic unit 102 and the registered inclination data (storage pattern) does not match, and the unauthorized use is determined (S204). Based on this determination result, the control unit 101 controls so that the functions of the input unit 107 and the SIM unit 108 are stopped (locked) (S205). With this control, the mobile terminal device 100 does not perform a normal operation, so that unauthorized use is avoided.
[0022]
FIG. 4 shows a second process of the portable terminal device of the present invention. In FIG. 4, the same step numbers are used for portions performing the same processing as in FIG. 3, and the processing from S201 to S204 and the processing from S206 and S207 are as described in FIG. A duplicate description will be omitted.
[0023]
When the comparison operation between the data obtained by the inclination detection in the arithmetic unit 102 and the registered inclination data (storage pattern) does not match, the unauthorized use is determined (S204). Then, the control unit 101 stops the function of the SIM unit 108 and disables access to the SIM card 120. Further, the control unit 101 executes control for making an emergency report to the police or a contracted mobile phone company, and transmits an emergency report (S305). Whether the emergency report is sent to the police, the mobile phone company, or both is left to the choice of the user or may be determined by the manufacturer.
[0024]
Emergency calls to the police are made by voice synthesized messages. The contents include a description of the situation that the portable terminal device 100 has been illegally used by another person, a telephone number of the portable terminal device 100, and the designation of the owner (contractor) address. The police identify the place of origin based on the position information issued by the mobile terminal device 100 as needed for an emergency call, interview the person possessing the mobile terminal device 100 illegally, and arrest the person And other measures. On the other hand, the emergency report to the mobile phone company is made to the department in charge of the company, and a measure is taken so that the connection to the telephone number is not made based on the data of the emergency report sent from the mobile terminal device 100. I do. In the mobile terminal device 100, when an emergency report is sent to the mobile phone company, since it is no longer necessary to transmit location information, the power is forcibly turned off (S306).
[0025]
FIG. 5 shows a third processing example of the portable terminal device of the present invention. The present embodiment is characterized in that the processing contents have both the processing contents of FIG. 3 and the processing contents of FIG. That is, when unauthorized use is determined in S204, key lock is performed as described with reference to FIG. 3 (S205). If it is detected that the key operation is repeated or the mobile terminal device 100 is frequently moved even in this state (S401), the portable terminal device 100 obtained by the unauthorized user is managed. You can judge that it is trying to make it usable. Therefore, the control unit 101 executes the emergency notification described with reference to FIG. 4 in addition to the key lock processing. The notification destination of the emergency report and the actions taken at the notification destination accompanying this are as described above.
[0026]
According to the processing shown in FIG. 5, it is possible to take measures gradually from the key lock to the emergency notification according to the situation of unauthorized use. For this reason, for example, if the legitimate user is unable to set the portable terminal device 100 to the inclination (angle) at the time of registration for some reason, the portable terminal device is immediately notified to the mobile phone company in FIG. However, such a situation can be prevented, and it is possible to avoid having to go to the police or explain the situation.
[0027]
In the above embodiment, as described with reference to FIG. 2, the inclination of the portable terminal device in the posture in the talking state is detected. However, the present invention is not limited to the talking state. The posture may be such that the case is held in a state in which the key input operation is performed while the housing is held in the tilted state.
[0028]
Although the configuration of FIG. 1 includes the wireless unit 104, the configuration may not include the wireless unit 104. Such a configuration is used for a PDA device or a personal computer. In this case, the control for the determination result of unauthorized use is only the key lock shown in FIG.
[0029]
Further, in the above description, the guidance is performed by voice synthesis when the registration mode for registering the inclination data is performed in advance. The start and end timings of the detection may be set to a time that the user can respond to, and the voice synthesis guide may be omitted. Alternatively, the outline of the registration procedure may be displayed on the display unit 106. Furthermore, a configuration in which a dedicated key (or switch) for executing the registration mode may be provided.
[0030]
Furthermore, in the above-described embodiment, the portable terminal device having the SIM unit 108 and using the SIM card 120 as a storage medium has been described, but the personal information is stored in a conventional configuration, that is, in a semiconductor memory such as a flash memory. It is needless to say that the present invention can be applied to a portable terminal device having a configuration in which the memory card cannot be changed to another model.
[0031]
In addition, the report destination of the emergency report can be arbitrarily set by the user in addition to the mobile phone company and the police. For example, a contracted security company, a fixed telephone at home, a mobile phone of a family, etc. may be used.
[0032]
【The invention's effect】
As is clear from the above, according to the mobile terminal device of the present invention, a tilt sensor that detects the tilt of the housing in a specific usage situation of the user and sets it as a registration pattern, and thereafter, when acquiring the registration pattern, Under the same usage conditions, the inclination sensor detects the inclination of the housing, compares the detected data with the registered pattern, judges that the two match, and judges that the use is performed by a legitimate user. The control means for judging that this is the case means that only one inclination sensor is required, and it is possible to prevent use by unauthorized users without using a special sensor or many sensors.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a portable terminal device of the present invention.
FIGS. 2A and 2B show a tilted state of the mobile terminal device according to the present invention when viewed from each direction in a use state, where FIG. 2A shows a tilted state of the mobile terminal device viewed from the temporal region of a user, and FIG. FIG. 4 is an explanatory diagram illustrating an inclined state when viewed from the back of the user's head, and FIG. 4C is an explanatory diagram illustrating an inclined state of the portable terminal device when viewed from above the user's head.
FIG. 3 is a flowchart illustrating a first processing example in a control unit in FIG. 1;
FIG. 4 is a flowchart illustrating a second processing example in the control unit in FIG. 1;
FIG. 5 is a flowchart illustrating a third processing example in the control unit in FIG. 1;
[Explanation of symbols]
Reference Signs List 100 Mobile terminal device 101 Control unit 102 Operation unit 103 Memory 104 Wireless unit 104a Antenna 105 Audio processing unit 106 Display unit 107 Input unit 108 SIM unit 109 Tilt sensor 110 Battery 111 Speaker 112 Microphone 120 SIM card 130 User

Claims (8)

An input unit including a key, a storage medium in which personal information is stored, and a portable terminal device including a control unit that controls the whole,
An inclination sensor for detecting the inclination of the housing,
Storage means for storing the initial data obtained by the tilt sensor as the registration pattern, the tilt of the housing in a specific use situation of the user,
When the inclination data detected by the inclination sensor in the same use condition as the use condition after the acquisition of the initial data matches the registered pattern stored in the storage unit, the use by a regular user is determined. And a control means for judging unauthorized use when there is a mismatch. The mobile terminal device according to claim 1, wherein the tilt sensor targets a posture of a housing in a call state as the use situation. 2. The portable terminal device according to claim 1, wherein the control unit locks the input unit when the unauthorized use is determined. 2. The portable terminal device according to claim 1, wherein the control unit is connected to a wireless unit used for communication with a wireless telephone network, and transmits an emergency report when the unauthorized use is determined. 5. The portable terminal device according to claim 4, wherein the control unit locks the input unit and transmits an emergency report when the unauthorized use is determined. 6. The portable terminal device according to claim 4, wherein the control unit sends the emergency report to the police, a contracted telephone company, or a report destination set by the user. 7. The portable terminal device according to claim 4, wherein the control unit forcibly turns off the power after transmitting the emergency report. 2. The mobile terminal device according to claim 1, wherein the storage medium is a SIM (Subscriber Identity Module) card or a semiconductor memory mounted in the housing.

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