JP2006172129A - Portable terminal device, its use permitting method, program and storage medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable terminal device capable of surely protecting confidential information managed on the portable terminal device by surely preventing the portable terminal device from being used by persons other than a legitimate user, its use permitting method, a program and a storage medium. <P>SOLUTION: In the portable terminal device 1, when the user's hand touches a capacitance type sensor 5, the user's palm comes into contact with a vein pattern sensor 4 at the same time, characteristic data is extracted from obtained vein pattern data of the user's palm, a person using the portable terminal device 1 is determined to be the legitimate person himself/herself, permitting the user to use the portable terminal device 1 when identified by collating the extracted characteristic data of the vein pattern data with registered vein pattern characteristic data of the legitimate user registered beforehand in a flash memory 6, and as long as the the user's hand comes into contact with the capacitance type sensor 5, the portable terminal device 1 is allowed to be continuously used. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a portable terminal device, a use permission method thereof, a program, and a storage medium, and in particular, a portable terminal device having a security function for ensuring the safety and reliability of information, a use permission method thereof, a program, and a storage medium. About.

The mobile terminal device is convenient to carry, but has a security problem because it is easily stolen and used without permission. For example, in the case of theft or unauthorized use by others, there is a risk that a large amount of loss may be incurred due to tampering or copying of data in the mobile terminal device. Therefore, recently, a technology for providing a security function by collating a user's fingerprint has been proposed, and this mobile terminal device is properly used by collating the user's fingerprint at power-on or at the start of work. The use of a person is permitted (see, for example, Patent Document 1).
JP 2001-265507 A

  However, even if the authorized user leaves the portable terminal device after permission to use the portable terminal device, the portable terminal device continues to be usable. May get.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a portable terminal device, a method of permitting use thereof, and a program capable of reliably protecting confidential information managed on the portable terminal device by reliably preventing the use by a non-authorized user. And providing a storage medium.

  In order to achieve the above object, the mobile terminal device according to claim 1 is a mobile terminal device used by a user, wherein the human body contact detection means detects the contact of the user with the mobile terminal device, and the use Personal authentication means for authenticating that the user is an authorized user of the portable terminal, contact of the user with the portable terminal device is detected, and it is authenticated that the user is the authorized user. Permission means for permitting the user to use the mobile terminal device, and after permitting the use, permission to use is continued as long as the user's contact with the mobile terminal device is detected. And continuation means.

  The use permission method of the mobile terminal device according to claim 10, wherein in the use permission method of the mobile terminal device, a human body contact detection step of detecting contact of the human body with the mobile terminal device; A personal authentication step for authenticating the user, and when the contact of the human body with the mobile terminal device is detected and the user is authenticated as the authorized user, A permission step of permitting use of the portable terminal device; and a continuation step of continuing permission of the use as long as contact of the human body with the portable terminal device is detected after the permission of use. And

  The use permission program for a mobile terminal device according to claim 11 is a use permission program for a mobile terminal device, wherein the human body contact detection module detects contact of the human body with the mobile terminal device, and the user is authorized to use the mobile terminal. By a personal authentication module for authenticating the user and when the contact of the human body with the portable terminal device is detected and the user is authenticated as the authorized user. A permission module for permitting the use of the mobile terminal device, a continuation module for continuing the permission for the use as long as contact of the human body with the mobile terminal device is detected after the permission of the use is executed by a computer It is characterized by.

  A storage medium according to a twelfth aspect stores the use permission program according to the eleventh aspect.

  According to the present invention, when the user's contact with the mobile terminal device is detected and the user is recognized as an authorized user, the user is allowed to use the mobile terminal device, After permission of use, permission of use is continued as long as the user's contact with the portable terminal device is detected. Therefore, when the authorized user passes the portable terminal device being used to another person other than the authorized user. The use can be prohibited, and therefore, it is possible to reliably prevent the use by anyone other than the authorized user and reliably protect the confidential information managed on the portable terminal device.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view seen from the front side of the mobile terminal device according to the first embodiment of the present invention, and FIG. 2 is a perspective view seen from the back side of the mobile terminal device of FIG.

  As shown in FIG. 1, the mobile terminal device 1 includes a key input unit 2 for inputting characters and the like, and a display unit 3 such as an LCD for sequentially displaying data input by the key input unit 2. In addition, a capacitive sensor 5 for detecting that the user's hand touches the mobile terminal device terminal 1 is provided on the side thereof, and the mobile terminal device 1 is touched on the back as shown in FIG. A vein pattern sensor 4 for extracting the vein pattern of the palm of the user.

  FIG. 3 is a block diagram showing an internal configuration of the mobile terminal device of FIG.

  In FIG. 3, the mobile terminal device 1 includes a flash memory 6, a CPU 7, an ASIC 8, and a RAM 9 in addition to the key input unit 2, the display unit 3, the vein pattern sensor 4, and the capacitive sensor 5. Are connected to each other. The mobile terminal device 1 also includes a power supply circuit 10.

  The flash memory 6 incorporates a system program, various application programs, and the like, and stores vein pattern feature data of a regular user of the mobile terminal device 1. The CPU 7 controls the operation of each part of the circuit in accordance with various programs stored in the flash memory 6 in advance. The CPU 7 operates a human body contact detection program, takes in human body contact data that the user's hand has touched from the capacitive sensor 5, and operates a vein pattern authentication program to operate the vein pattern sensor 4 as a vein pattern. Data is taken in and feature points are extracted from the vein pattern data.

  The ASIC 8 has a built-in peripheral I / O function of the portable terminal device 1, and the RAM 9 has a work register in which data input / output to / from the CPU 7 in various operation modes is temporarily stored as necessary. And an input register for storing input data. The power supply circuit 10 has a power source composed of a battery or a rechargeable battery, and supplies an operating power source to each component.

  FIG. 4 is a flowchart showing a procedure of vein pattern matching processing executed by the mobile terminal device 1 of FIG.

  In FIG. 4, first, when the user turns on the power of the mobile terminal device 1 (step S1), the capacitive sensor 5 starts to operate and always waits for detection of contact. When the user's hand touches the capacitive sensor 5 arranged on the side of the mobile terminal device 1 in order to use the mobile terminal device 1, the user's palm comes into contact with the vein pattern sensor 4 at the same time. (YES in step S2) (human body contact detection means), the CPU 7 captures the vein pattern data of the palm of the user and stores the vein pattern data in the RAM 9 (step S3). Further, the CPU 7 stores the vein pattern data in the RAM 9. Feature data is extracted from the vein pattern data obtained (step S4).

  Next, it is determined whether or not the feature data of the vein pattern data extracted in step S4 matches the registered user's registered vein pattern feature data registered in the flash memory 6 in advance (step S5). ) (Personal authentication means) If they match, it is determined that the user of the mobile terminal device 1 is the authorized user, and the user is allowed to use the mobile terminal device 1 (step S6). (Permitting means) As long as the user's hand is in contact with the capacitive sensor 5 (YES in step S7), the use of the mobile terminal device 1 is continued (continuing means). When the user releases the hand from the mobile terminal device 1 (NO in step S7), the user is prohibited from using the mobile terminal device 1 (step S8), and the process proceeds to step S2, where new human body contact data is stored. Wait for input.

  As a result of the determination in step S5, when the feature data of the vein pattern data extracted in step S4 does not match with the registered user's registered vein pattern feature data registered in the flash memory 6 in advance, It is determined that the user is not the registered user himself / herself, the use of the portable terminal device 1 by the user is prohibited (step S8), the process proceeds to step S2, and a state of waiting for input of new human body contact data is entered.

  Note that the portable terminal device 1 is turned off by an auto timer if there is no human contact for a certain period of time by the power OFF switch or in the waiting state for input of human body contact data. This is the same in the processing in the other embodiments.

  In the above embodiment, if the user removes his / her hand from the capacitive sensor 5 from the portable terminal device 1, the use of the portable terminal device 1 is prohibited. It may be used by anyone other than the person himself when switching. The possibility is that the vein pattern sensor 4 can also detect human contact in addition to personal authentication, so that the vein pattern sensor 4 is replaced by the capacitive sensor 5 and human contact detection means. Can be avoided by the processing of FIG. 5 described later. In this case, the capacitive sensor 5 is not necessary.

  FIG. 5 is a flowchart of the procedure of a modification of the vein pattern matching process of FIG.

  In FIG. 5, first, the user turns on the power of the portable terminal device 1 (step S11), and the user's palm touches the vein pattern sensor 4 to use the portable terminal device 1 (human body contact detection means). The CPU 7 takes in the vein pattern data of the palm of the user and stores the vein pattern data in the RAM 9 (step S12). Further, the CPU 7 extracts the feature data from the vein pattern data stored in the RAM 9 ( Step S13).

  Next, it is determined whether or not the feature data of the vein pattern data extracted in step S13 matches the registered user's registered vein pattern feature data registered in the flash memory 6 in advance (step S14). ) (Personal authentication means) If they match, it is determined that the user of the portable terminal device 1 is the authorized user, and the user is allowed to use the portable terminal device 1 (step S15). (Permitting means) Use of the portable terminal device 1 is continued (continuation means) and confirmation of continuation of use is made until a certain period of time elapses after the use permission is granted (NO in step S16). After a certain period of time has elapsed (YES in step S16), the process proceeds to step S12 and waits for input of new human body contact data. The regular period can be arbitrarily registered in advance by a regular user.

  As a result of the determination in step S14, when the feature data of the vein pattern data extracted in step S13 does not match the registered user's registered vein pattern feature data registered in advance in the flash memory 6 by matching, It is determined that the user is not the registered user himself / herself, the use of the mobile terminal device 1 by the user is prohibited (step S17), the process proceeds to step S12, and a state of waiting for input of new human body contact data is entered.

  Further, a fingerprint sensor may be used in place of the vein pattern sensor 4 as personal authentication means. The fingerprint sensor can be constituted by an optical type, a pressure sensitive type, a capacitance type, or the like.

  A temperature sensor may be used instead of the capacitive sensor 5 as the human body contact detection means. For the temperature sensor, for example, a thermistor having a characteristic that a resistance value changes with temperature is used. When the portable terminal device 1 is put on the hand, the temperature sensor is arranged so as to be able to touch the finger or the palm, the temperature change is detected by the finger or the palm touching the temperature sensor, and the contact of the human body is detected. Furthermore, detection accuracy can be improved by providing a plurality of temperature sensors, placing a finger or the like on the temperature sensor, and providing a function of detecting contact if temperature changes are observed at all locations.

  A pressure sensor may be used instead of the capacitive sensor 5 as the human body contact detection means. When the portable terminal device 1 is put on the hand, the pressure sensor is arranged so as to be able to touch the finger or palm, the pressure change is detected by the finger or palm touching the pressure sensor, and the contact of the human body is detected. Furthermore, it is possible to increase the detection accuracy by providing a plurality of pressure sensors, placing a finger or the like on the pressure sensor, and providing a function of detecting contact if pressure changes are observed at all the positions.

  Instead of the capacitive sensor 5 as the human body contact detection means, a sensor having both functions of a temperature sensor and a pressure sensor may be used. As a result, it is possible to detect hand contact even in an environment where the air temperature is substantially the same as the body temperature.

  A switch may be used instead of the capacitive sensor 5 as the human body contact detection means. When the portable terminal device 1 is put on the hand, the switch is arranged to be pushed by a finger or palm. When the switch is pushed by the finger or palm, the contact of the human body is detected. Furthermore, the detection accuracy can be improved by providing a plurality of switches, placing a finger or the like on the switch, and providing a function that enables contact detection if the switch is pressed at all positions.

  FIG. 6 is a perspective view seen from the front side of the mobile terminal device according to the second embodiment of the present invention, and FIG. 7 is a perspective view seen from the back side of the mobile terminal device of FIG.

  As shown in FIG. 6, the mobile terminal device 1 includes a key input unit 2 for inputting characters and the like, and a display unit 3 such as an LCD for sequentially displaying data input by the key input unit 2. As shown in FIG. 7, a capacitive sensor 5 that detects that the user's hand touches the mobile terminal device 1 is provided on the back surface thereof.

  FIG. 8 is a block diagram showing an internal configuration of the mobile terminal device of FIG.

  In FIG. 8, the mobile terminal device 1 includes a flash memory 6, a CPU 7, an ASIC 8, and a RAM 9 in addition to the key input unit 2, the display unit 3, and the capacitive sensor 5, which are connected to each other. Yes. The mobile terminal device 1 also includes a power supply circuit 10.

  The flash memory 6 incorporates a system program, various application programs, and the like, and stores ID key data of an authorized user of the mobile terminal device 1. The CPU 7 controls the operation of each part of the circuit in accordance with various programs stored in the flash memory 6 in advance. The CPU 7 operates a human body contact detection program, takes in human body contact data that a user's hand has touched from the capacitive sensor 5, operates an ID key authentication program, and operates the ID key authentication program from the key input unit 2. Receive notification of input.

  The ASIC 8 has a built-in peripheral I / O function of the portable terminal device, and the RAM 9 has a work register that temporarily stores data to be input / output to / from the CPU 7 in various operation modes as needed. An input register or the like for storing input data is provided. The power supply circuit 10 has a power supply composed of a battery or a rechargeable battery, and supplies operation power to each part of the circuit.

  FIG. 9 is a flowchart showing a procedure of ID collation processing executed by the mobile terminal device 1 of FIG.

  In FIG. 9, first, when the user turns on the power of the portable terminal device 1 (step S21), the capacitive sensor 5 starts to operate and always waits for detection of contact. After the user's palm touches the capacitive sensor 5 disposed on the back of the mobile terminal device 1 in order to use the mobile terminal device 1 (YES in step S22), the user touches the human body contact detection means. When the ID key is input by the key input unit 2, the CPU 7 stores the input ID key data thus input in the RAM 9 (step S23).

  Next, it is determined whether or not the ID key data input in step S23 matches the registered ID key data registered in the flash memory 6 in advance (step S24) (personal authentication means). If it is, it is determined that the user of the mobile terminal device 1 is an authorized user, and the use of the mobile terminal device 1 by the user is permitted (step S25) (permission means). As long as the hand is in contact with the capacitive sensor 5 (YES in step S26), the use of the mobile terminal device 1 is continued (continuation means). When the user releases his / her hand from the mobile terminal device 1 (NO in step S26), the user is prohibited from using the mobile terminal device 1 (step S27), and the process proceeds to step S22, where new human body contact data is stored. Wait for input.

  As a result of the determination in step S24, if the ID key data input in step S23 does not match the registered ID key data registered in advance in the flash memory 6 by verification, the user is not the registered user. It judges and prohibits use of the portable terminal device 1 by the user (step S8), and proceeds to step S2 to enter a state of waiting for input of new human body contact data.

  FIG. 10 is a perspective view seen from the front side of the mobile terminal device according to the third embodiment of the present invention, and FIG. 11 is a perspective view seen from the back side of the mobile terminal device of FIG.

  As shown in FIG. 10, the mobile terminal device 1 includes a key input unit 2 for inputting characters and the like, and a display unit 3 such as an LCD for sequentially displaying data input by the key input unit 2. As shown in FIG. 11, a capacitive sensor 5 for detecting that the user's hand touches the mobile terminal device 1 is provided on the back surface thereof. On the display unit 3, a coordinate input device 11 including a resistive film pressure sensitive touch panel, an electromagnetic induction digitizer, or the like is disposed.

  FIG. 12 is a block diagram showing an internal configuration of the mobile terminal device of FIG.

  In FIG. 12, the mobile terminal device 1 includes a flash memory 6, a CPU 7, an ASIC 8, and a RAM 9 in addition to the key input unit 2, the display unit 3, the capacitive sensor 5, and the coordinate input device 11. Are connected to each other. The mobile terminal device 1 also includes a power supply circuit 10.

  The flash memory 6 incorporates a system program, various application programs, and the like, and stores handwriting information feature data of an authorized user of the mobile terminal device 1. The CPU 7 controls the operation of each part of the circuit in accordance with various programs stored in the flash memory 6 in advance. The CPU 7 operates a human body contact detection program, takes in human body contact data that the user's hand touched from the capacitive sensor 5, and operates a handwriting appraisal program so that the user can input the coordinate input device 11. When the surface of the button is pressed with the pen tip etc., the pressed position can be detected and imported as coordinate data. When the user inputs a figure or character, the input locus is continuously coordinated. It is taken in as data and used as handwriting information data, and feature data is extracted from the handwriting information data.

  The ASIC 8 has a built-in peripheral I / O function of the portable terminal device 1, and a RAM 9 is a work register in which data input / output to / from the CPU 7 in various operation modes is temporarily stored as necessary. And an input register for storing input data. The power supply circuit 10 has a power supply composed of a battery or a rechargeable battery, and supplies operation power to each part of the circuit.

  FIG. 13 is a flowchart illustrating a procedure of handwriting information collating processing executed by the mobile terminal device 1 of FIG.

  In FIG. 13, first, when the user turns on the power of the mobile terminal device 1 (step S31), the capacitive sensor 5 starts to operate and always waits for detection of contact. After the user's palm touches the capacitive sensor 5 disposed on the back of the mobile terminal device 1 in order to use the mobile terminal device 1 (YES in step S32) (human body contact detection means), the user When a handwriting such as a character is input to the coordinate input device 11, the CPU 7 stores the input handwriting information data in the RAM 9 (step S33), and the CPU 7 further calculates feature data from the handwriting information data stored in the RAM 9. Is extracted (step S34).

  Next, it is determined whether or not the handwriting information feature data extracted in step S34 matches the handwriting information feature data registered in advance in the flash memory 6 by collation (step S35). (Personal authentication means) If they match, it is determined that the user of the mobile terminal device 1 is the authorized user, and the user is permitted to use the mobile terminal device 1 (step S36) ( As long as the user's hand is in contact with the capacitive sensor 5 (YES in step S37), the use of the mobile terminal device 1 is continued (continuation means). When the user releases his / her hand from the mobile terminal device 1 (NO in step S37), the user is prohibited from using the mobile terminal device 1 (step S38), and the process proceeds to step S32, where new human body contact data is stored. Wait for input.

  As a result of the determination in step S35, if the feature data of the handwriting information extracted in step S34 does not match the registered handwriting information feature data of the authorized user registered in advance in the flash memory 6 by collation, use It is determined that the user is not the registered user himself / herself, the user is prohibited from using the mobile terminal device 1 (step S38), the process proceeds to step S32, and the input of new human body contact data is awaited.

  According to the first to third embodiments, it is possible to surely protect confidential information managed on the mobile terminal device by reliably preventing the use of the mobile terminal device by non-authorized users. it can.

  Another object of the present invention is to supply a storage medium (or recording medium) in which a program code of software for realizing the functions of the above-described embodiments is recorded to a system or apparatus, and to perform computer (or CPU or MPU) of the system or apparatus. Needless to say, this is also achieved by reading and executing the program code stored in the storage medium.

  In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiments, and the storage medium storing the program code constitutes the present invention.

  Further, by executing the program code read by the computer, not only the functions of the above-described embodiments are realized, but also an operating system (OS) running on the computer based on the instruction of the program code. It goes without saying that a case where the function of the above-described embodiment is realized by performing part or all of the actual processing and the processing is included.

  Further, after the program code read from the storage medium is written in a memory provided in a function expansion card inserted into the computer or a function expansion unit connected to the computer, the function expansion is performed based on the instruction of the program code. It goes without saying that the CPU or the like provided in the card or the function expansion unit performs part or all of the actual processing and the functions of the above-described embodiments are realized by the processing.

  The above-described program only needs to be able to realize the functions of the above-described embodiments by a computer, and the form includes forms such as object code, a program executed by an interpreter, and script data supplied to the OS. But you can.

  As a recording medium for supplying the program, for example, RAM, NV-RAM, floppy (registered trademark) disk, optical disk, magneto-optical disk, CD-ROM, MO, CD-R, CD-RW, DVD (DVD-ROM, DVD-RAM, DVD-RW, DVD + RW), magnetic tape, non-volatile memory card, other ROM, etc. may be used as long as they can store the above programs. Alternatively, the program is supplied by downloading from another computer or database (not shown) connected to the Internet, a commercial network, a local area network, or the like.

It is the perspective view seen from the front of the portable terminal device concerning a 1st embodiment of the present invention. It is the perspective view seen from the back surface of the portable terminal device of FIG. It is a block diagram which shows the internal structure of the portable terminal device of FIG. It is a flowchart which shows the procedure of the vein pattern collation process performed by the portable terminal device 1 of FIG. It is a flowchart of the procedure of the modification of the vein pattern collation process of FIG. It is the perspective view seen from the front of the portable terminal device which concerns on the 2nd Embodiment of this invention. It is the perspective view seen from the back surface of the portable terminal device of FIG. It is a block diagram which shows the internal structure of the portable terminal device of FIG. It is a flowchart which shows the procedure of the ID collation process performed by the portable terminal device 1 of FIG. It is the perspective view seen from the front of the portable terminal device which concerns on the 3rd Embodiment of this invention. It is the perspective view seen from the back surface of the portable terminal device of FIG. It is a block diagram which shows the internal structure of the portable terminal device of FIG. It is a flowchart which shows the procedure of the handwriting information collation process performed by the portable terminal device 1 of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Portable terminal device 2 Key input part 3 Display part 4 Vein pattern sensor 5 Capacitance type sensor 6 Flash memory 7 CPU
8 ASIC
9 RAM
10 Power supply circuit 11 Coordinate input device

Claims (12)

  In a portable terminal device used by a user, human body contact detection means for detecting a user's contact with the portable terminal device, and personal authentication means for authenticating that the user is an authorized user of the portable terminal And permitting the user to use the portable terminal device when contact of the user with the portable terminal device is detected and the user is authenticated as the authorized user. And a continuation unit that continues the permission of use as long as contact of the user with the portable terminal device is detected after the permission of use.   2. The portable terminal device according to claim 1, wherein the personal authentication unit includes a vein pattern authentication unit that performs the authentication using a vein pattern of a palm of a human body.   2. The portable terminal device according to claim 1, wherein the personal authentication unit includes a fingerprint authentication unit that performs the authentication using a fingerprint of a human body.   The portable terminal device according to claim 1, wherein the personal authentication means includes an ID collating means for performing the authentication by inputting an ID key.   The portable terminal device according to claim 1, wherein the personal authentication unit includes a handwriting appraisal unit that performs the authentication by a user's handwriting appraisal.   The said human body contact detection means contains the electrostatic capacitance type sensor which electrically detects the electrostatic capacitance by the discharge from the said user's hand, The any one of Claim 1 thru | or 5 characterized by the above-mentioned. Mobile terminal device.   The portable terminal device according to claim 1, wherein the human body contact detection unit includes a temperature sensor that detects a body temperature of the user's hand.   The portable terminal device according to any one of claims 1 to 5, wherein the human body contact detection means includes a pressure sensor that detects pressure by a hand of the user.   The portable terminal device according to claim 1, wherein the human body contact detection unit includes a switch that is pressed by a hand of the user.   In the method of permitting use of the mobile terminal device, a human body contact detection step for detecting contact of the human body with the mobile terminal device, a personal authentication step for authenticating that the user is an authorized user of the mobile terminal, A permission step of permitting the user to use the portable terminal device when contact of the human body with the portable terminal device is detected and the user is authenticated as the authorized user; A use permission method for a portable terminal device comprising: a continuation step of continuing permission of use as long as contact of the human body with the portable terminal device is detected after permission of use.   In the mobile terminal device use permission program, a human body contact detection module that detects contact of the human body with the mobile terminal device, a personal authentication module that authenticates that the user is a regular user of the mobile terminal, and A permission module that permits the user to use the portable terminal device when contact of the human body with the portable terminal device is detected and the user is authenticated as the authorized user; A use permission program for causing a computer and a continuation module to continue permitting use as long as contact of the human body with the portable terminal device is detected after permitting use.   A computer-readable storage medium storing the use permission program according to claim 11.

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