JP2007329599A - Communicating system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a communication system with enhanced security capable of surely preventing illegitimate use of communication terminals. <P>SOLUTION: A terminal side control section 17 calculates azimuth difference data representing a difference between terminal side azimuth data sensed by a terminal side azimuth sensor 11 and a mobile side azimuth data sensed by a mobile side azimuth sensor 21, and calculates an acceleration difference data representing a difference between terminal side acceleration data sensed by a terminal side acceleration sensor 12 and mobile side acceleration data sensed by a mobile side acceleration sensor 22. When judging that the calculated azimuth difference data are greater than a predetermined first threshold value and that the calculated acceleration difference data are greater than a predetermined second threshold value, the terminal side control section 17 deactivates a predetermined function of a communication terminal main body, e.g. a credit function adopting the contactless IC card technology. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a communication system constructed by a portable electronic device carried by a user and a communication terminal device configured to be able to communicate with the portable electronic device.

Cellular phones have been enhanced with functions such as telephone calls, electronic phonebooks and schedule books, e-mail transmission and reception, and Internet connection, as well as contactless IC (
Integrated circuit) Credit function using card technology has been installed. Thus, a mobile phone provided with a credit function has a large loss when it is stolen and illegally used by a third party. Therefore, in the conventional mobile phone, each function of the mobile phone main body can be stopped and released by a personal identification number and fingerprint authentication to protect personal information and prevent theft. Prior art relating to an electronic device having a security function in place of a password and fingerprint authentication is disclosed in Patent Documents 1 to 3.

  The mobile phone of Patent Document 1 includes a wireless unit that recognizes the distance from the mobile phone, and when the distance from the mobile phone exceeds a preset limit distance, the mobile phone function restriction, destination restriction, warning sound It is configured to reduce the damage caused by misplacement.

  When the mobile terminal device main body is moved from a fixed position, the mobile terminal device of Patent Document 2 detects the acceleration of the movement and issues an alarm indicating that the mobile terminal device main body has been illegally carried. It is configured to prevent the device body from being stolen and stolen.

  The burglar alarm device of Patent Document 3 includes an acceleration sensor that is installed in a target device and detects vibration, impact, and tilt angle generated in the target device as acceleration, and the output of the acceleration sensor is determined in advance during a predetermined measurement time. It is configured to measure the number of times the set value is exceeded, determine that the theft has occurred when the measured number is equal to or greater than a predetermined number, and issue a warning.

JP 2003-158482 A JP-A-8-249546 JP 2004-262375 A

  In a conventional mobile phone device that stops and cancels each function of the mobile phone body by means of a personal identification number and fingerprint authentication, when the function of the mobile phone device body is stopped and released, the user of the mobile phone device itself However, since it is necessary to perform an input operation for password and fingerprint authentication, there is a problem in that the input operation is complicated and low in convenience for the user.

  The mobile phone of Patent Document 1 receives weak radio waves transmitted from the wireless unit, recognizes the relative distance from the user of the mobile phone carrying the wireless unit, and this relative distance exceeds the limit distance. In such a case, for example, the function as an electronic money terminal is stopped. However, the reach of radio waves from the wireless unit varies depending on external factors, and may cause malfunction due to interference and noise. Moreover, since it is difficult to uniformly control the reach of radio waves, security cannot be ensured.

  In the portable terminal device of Patent Document 2, when enabling or disabling the operation state of the anti-theft function such as acceleration detection by the acceleration sensor, the user of the portable terminal device must operate a predetermined switch. However, there is a problem that the operation is complicated and the convenience is low. In addition, even if it is difficult for a third party other than the authorized user to understand the existence and operation method of the switch, there is a risk that the switch is undesirably operated by the third party and the mobile terminal device is illegally used. There is.

  An object of the present invention is to provide a communication system capable of reliably preventing unauthorized use of a communication terminal device and having improved security.

The present invention is a communication system including a portable electronic device carried by a user and a communication terminal device configured to be able to communicate with the portable electronic device,
Portable electronic devices
A portable communication means capable of communicating with the communication terminal device;
Portable side orientation data representing the orientation of the portable electronic device main body, and portable side detection means for detecting portable side acceleration data representing the acceleration of the portable electronic device main body,
The communication terminal device
A terminal-side communication means capable of communicating with the portable electronic device;
Terminal-side detection means for detecting terminal-side azimuth data representing the azimuth of the communication terminal apparatus main body, and terminal-side acceleration data representing acceleration of the communication terminal apparatus main body,
Calculate azimuth difference data representing a difference value between portable side azimuth data and terminal side azimuth data, and acceleration difference data representing a difference value between portable side acceleration data and terminal side acceleration data,
Whether to stop the predetermined function of the communication terminal device main body based on the comparison result between the calculated azimuth difference data and the predetermined first threshold value, and the comparison result between the calculated acceleration difference data and the predetermined second threshold value And a control means for controlling the communication system.

The communication terminal device further includes a communication availability determination unit that determines whether or not the communication terminal device can communicate with the portable electronic device via the terminal side communication unit,
The control means stops the predetermined function of the main body of the communication terminal device when the communication availability determination means determines that communication with the portable electronic device is impossible.

In the present invention, the communication terminal device further includes input means for inputting a command for executing a predetermined function of the communication terminal device body,
The control means determines whether or not the command is input by the input means when the predetermined function of the communication terminal device main body is stopped, and if the control means determines that the command is input, the command is input. The terminal-side communication means is controlled so as to transmit information to the effect to the portable electronic device.

  The present invention is also characterized in that the portable electronic device and the communication terminal device communicate using Bluetooth.

  According to the present invention, the communication terminal device and the portable electronic device carried by the user are configured to communicate with each other. The portable side orientation data representing the orientation of the portable electronic device main body and the portable side acceleration data representing the acceleration of the portable electronic device main body are detected by the portable side detection means. Terminal side orientation data representing the orientation of the communication terminal apparatus main body and terminal side acceleration data representing the acceleration of the communication terminal apparatus main body are detected by the terminal side detection means.

  The control means calculates the azimuth difference data representing the difference value between the portable side azimuth data and the terminal side azimuth data, and the acceleration difference data representing the difference value between the portable side acceleration data and the terminal side acceleration data. Whether to stop the predetermined function of the communication terminal device main body based on the comparison result between the calculated azimuth difference data and the predetermined first threshold value, and the comparison result between the calculated acceleration difference data and the predetermined second threshold value Is controlled by the control means.

  For example, when the azimuth difference data is larger than a predetermined first threshold value and the acceleration difference data is larger than a predetermined second threshold value, the control unit controls the communication terminal device main body to stop the predetermined function.

  Therefore, even when the user of the communication terminal device is located away from the communication terminal device, for example, when the azimuth difference data is larger than the predetermined first threshold and the acceleration difference data is larger than the predetermined second threshold, The predetermined function of the communication terminal device body is stopped. As a result, personal information regarding the user of the communication terminal device can be prevented from being viewed undesirably by a third party other than the user of the communication terminal device, and the confidentiality of the personal information can be maintained. Can do. In addition, unauthorized use of the communication terminal device by the third party can be reliably prevented, and security can be improved as compared with the prior art.

  Further, according to the present invention, whether or not the communication terminal device can communicate with the portable electronic device via the terminal-side communication unit is determined by the communication availability determination unit. When it is determined by the communication availability determination unit that communication with the portable electronic device is impossible, the predetermined function of the communication terminal device body is stopped by the control unit.

  Therefore, even when the communication terminal device cannot communicate with the portable electronic device, the predetermined function of the communication terminal device main body is stopped, so that personal information regarding the user of the communication terminal device is stored in a third party other than the user of the communication terminal device. It can be reliably prevented from being viewed undesirably by a person, and the confidentiality of the personal information can be maintained. In addition, unauthorized use of the communication terminal device by the third party can be reliably prevented, and security can be significantly improved as compared with the conventional technology.

  Further, according to the present invention, a command for executing a predetermined function of the communication terminal device body can be input by the input means. When the predetermined function of the communication terminal device main body is stopped, it is determined by the control means whether or not the command is input by the input means, and when the control means determines that the command is input, the terminal side communication The means is controlled by the control means so as to transmit information indicating that the command has been input to the portable electronic device.

  Therefore, the user of the communication terminal device receives information that the instruction transmitted from the communication terminal device has been input by the portable electronic device, and the user's communication terminal device is received by a third party other than the user. It is possible to immediately grasp that it is being used illegally. Accordingly, the user of the communication terminal device can quickly perform processing such as notifying the police that the communication terminal device has been stolen and used illegally.

  In addition, according to the present invention, Bluetooth has conveniences such as power saving, short distance, unlicensed use and miniaturization compared to other wireless communications, so portable electronic devices and communication terminal devices By using Bluetooth to communicate, a communication system can be easily constructed.

  FIG. 1 is a block diagram showing a configuration of a communication system 1 according to an embodiment of the present invention. The communication system 1 includes a communication terminal device 2 and a portable electronic device 3. The communication terminal device 2 and the portable electronic device 3 can be carried and carried by the user, and move by being carried by the user. In the present embodiment, it is assumed that the user wears the portable electronic device 3. In the communication system 1, the communication terminal device 2 and the portable electronic device 3 can communicate with each other. In the communication system 1, the communication terminal device 2 and the portable electronic device 3 can communicate using Bluetooth (Bluetooth (registered trademark)), which is a short-range wireless standard. The communication terminal device 2 may be a mobile phone, for example. The communication terminal device 2 is configured to be able to communicate with other communication terminal devices via a base station that is a wireless fixed station and a server device.

  The communication terminal device 2 includes a terminal side orientation sensor 11, a terminal side acceleration sensor 12, an input operation unit 13, a display unit 14, a terminal side wireless communication unit 15, a terminal side storage unit 16, and a terminal side control unit 17. The terminal side direction sensor 11 is realized by a geomagnetic sensor, for example. The terminal side direction sensor 11 is provided with, for example, two magnetic sensors in directions orthogonal to each other, detects the magnitude of the magnetic field by each of the magnetic sensors, and determines the absolute direction that the communication terminal device body is facing from the detected value. The terminal side orientation data to be represented is detected. The terminal side azimuth sensor 11 detects terminal side azimuth data every predetermined time, in this embodiment, every 1 to 2 seconds.

  The terminal-side acceleration sensor 12 supports a weight provided at the center of the sensor chip with a piezoresistive element from four sides, and uses a bridge circuit to change four piezoresistive changes caused by fluctuations in the central weight when receiving acceleration. This is realized by a two-axis acceleration sensor. The terminal-side acceleration sensor 12 is not limited to a piezoresistive acceleration sensor, but is a heat distribution detection type acceleration sensor that detects a movement of an internal gas heated by a heater, which is a heat generation part in a chip, using a temperature sensor, or It may be realized by a capacitive acceleration sensor that provides a movable electrode having a constant mass in the sensor, detects a change in capacitance between the movable electrode and the fixed electrode, and detects acceleration.

  The terminal-side acceleration sensor 12 acts in an axial direction (hereinafter sometimes referred to as “X-axis direction”) extending parallel to the longitudinal direction in a rectangular plane perpendicular to the thickness direction of the communication terminal device body formed in a rectangular parallelepiped shape. Terminal-side acceleration data representing the acceleration acting on the axis and the acceleration acting in the axial direction extending in parallel with the width direction orthogonal to the X-axis direction (hereinafter sometimes referred to as “Y-axis direction”) in the plane. The terminal-side acceleration sensor 12 detects terminal-side acceleration data every predetermined time, in this embodiment, every 0.1 to 0.5 seconds.

  The input operation unit 13 includes a plurality of operation pieces such as input operation keys for a user to input predetermined information. By operating each operation piece, the input operation unit 13 generates a signal representing information corresponding to the operation, such as predetermined information such as numeric information, character information, and instruction information to the communication terminal device 2, and the terminal This is given to the side control unit 17. Accordingly, the user can give information to the communication terminal device 2 by operating each operation piece of the input operation unit 13.

The display unit 14 displays an image including a still image and a moving image. The image may be an image representing characters such as letters and numbers, or an image representing photographs and illustrations. The display unit 14 includes a transmissive liquid crystal display element, a reflective liquid crystal display element, and electroluminescence (
Electro Luminescence (abbreviation: EL) may be realized using at least one of a transflective liquid crystal display element. The display unit 14 may be capable of color display or monochrome display.

  The terminal side wireless communication unit 15 includes a terminal side antenna and a terminal side wireless communication unit. The terminal-side antenna transmits and receives a predetermined signal to and from the portable electronic device 3 when wirelessly communicating with the portable electronic device 3 using, for example, Bluetooth. The terminal-side antenna transmits a signal given from the terminal-side radio communication unit and gives the received signal to the terminal-side radio communication unit. The terminal-side antenna may be realized by a telescopic rod antenna, for example, or may be realized by a chip antenna that occupies a relatively small area when mounted on a printed circuit board.

  The terminal-side wireless communication unit demodulates a signal received from the portable electronic device via the terminal-side antenna at the time of reception and gives it to the terminal-side control unit 17, and a signal given from the terminal-side control unit 17 at the time of transmission Is modulated and amplified to be supplied to the terminal-side antenna.

  The terminal-side storage unit 16 is realized by, for example, a RAM (R andom Access Memory). The RAM is transmitted from the terminal-side azimuth data detected by the terminal-side azimuth sensor 11, the terminal-side acceleration data detected by the terminal-side acceleration sensor 12, and the portable electronic device 3, and received by the terminal-side wireless communication unit 15. The side orientation data and the mobile side acceleration data are stored.

  The terminal-side control unit 17 includes a central processing unit (abbreviation: CPU), and the terminal-side orientation sensor 11 constituting the communication terminal device 2 based on a control program stored therein, The hardware resources including the terminal-side acceleration sensor 12, the input operation unit 13, the display unit 14, the terminal-side wireless communication unit 15, and the terminal-side storage unit 16 are comprehensively controlled.

  The terminal-side control unit 17 causes the terminal-side storage unit 16 to store the terminal-side orientation data detected by the terminal-side orientation sensor 11 and the terminal-side acceleration data detected by the terminal-side acceleration sensor 12.

  The terminal-side control unit 17 controls the terminal-side wireless communication unit 15 so as to transmit information (hereinafter, also referred to as “data request information”) indicating acquisition requests for mobile-side orientation data and mobile-side acceleration data. The terminal-side control unit 17 causes the terminal-side storage unit 16 to store the portable-side orientation data and the portable-side acceleration data that are transmitted from the portable electronic device 3 and received by the terminal-side wireless communication unit 15.

  The terminal-side control unit 17 calculates azimuth difference data representing a difference value between the mobile-side azimuth data stored in the terminal-side storage unit 16 and the terminal-side azimuth data, and the mobile-side stored in the terminal-side storage unit 16 Acceleration difference data representing a difference value between the acceleration data and the terminal side acceleration data is calculated.

  The terminal-side control unit 17 determines the communication terminal device body in advance based on the comparison result between the calculated azimuth difference data and the predetermined first threshold value, and the comparison result between the calculated acceleration difference data and the predetermined second threshold value. Controls whether to stop a function, for example, a credit function using a non-contact IC (Integrated Circuit) card technology. Here, the first threshold value and the second threshold value are different from each other.

  The terminal-side control unit 17 determines whether or not communication with the portable electronic device 3 is possible via the terminal-side wireless communication unit 15. If the terminal-side control unit 17 determines that communication with the portable electronic device 3 is impossible, the terminal-side control unit 17 stops a predetermined function of the communication terminal device body, for example, a credit function using a non-contact IC card technology.

  When the predetermined function of the communication terminal device main body is stopped, the terminal-side control unit 17 causes the input operation unit 13 to execute a command for executing the predetermined function of the communication terminal device main body (hereinafter referred to as “function execution command”). Terminal terminal wireless so that information indicating that the function execution command has been input is transmitted to the portable electronic device 3 when it is determined that the function execution command has been input. The communication unit 15 is controlled.

  The portable electronic device 3 includes a portable orientation sensor 21, a portable acceleration sensor 22, a vibration generating unit 23, an audio output unit 24, a portable wireless communication unit 25, a portable storage unit 26, and a portable control unit 27. The portable side direction sensor 21 is realized by, for example, a geomagnetic sensor. For example, the portable side orientation sensor 21 includes two magnetic sensors arranged in directions orthogonal to each other, detects the magnitude of the magnetic field by each of the magnetic sensors, and represents the orientation of the portable electronic device main body from the detected value. Detect orientation data. The portable side azimuth sensor 21 detects portable side azimuth data every predetermined time, in this embodiment, every 1 to 2 seconds.

  The mobile-side acceleration sensor 22 is realized by a piezoresistive acceleration sensor and a biaxial acceleration sensor. Similarly to the terminal-side acceleration sensor 12, the portable-side acceleration sensor 22 is not limited to a piezoresistive acceleration sensor, and may be realized by a heat distribution detection type acceleration sensor or a capacitance type acceleration sensor.

  The mobile-side acceleration sensor 22 may be referred to as an axial direction (hereinafter referred to as “A-axis direction”) extending parallel to the longitudinal direction in a rectangular plane perpendicular to the thickness direction of the portable electronic device body formed in a rectangular shape. ) And acceleration on the mobile side representing acceleration acting in an axial direction extending in parallel to the width direction orthogonal to the A-axis direction (hereinafter sometimes referred to as “B-axis direction”) in the plane. To do. The mobile-side acceleration sensor 22 detects mobile-side acceleration data every predetermined time, in this embodiment, every 0.1 to 0.5 seconds.

  The vibration generating unit 23 generates vibration based on a predetermined control signal given from the portable control unit 27. The vibration generator 23 is realized by, for example, a motor in which a weight is eccentrically attached to a rotating shaft, and the weight rotates as the motor rotates to generate vibration.

  The audio output unit 24 is realized by a speaker, for example. The audio output unit 24 outputs a predetermined warning sound, for example, an electronic buzzer sound, based on a predetermined control signal given from the portable side control unit 22.

  The portable wireless communication unit 25 includes a portable antenna and a portable wireless communication unit. The portable antenna transmits and receives a predetermined signal to and from the communication terminal device 2 when wirelessly communicating with the communication terminal device 2 using, for example, Bluetooth. The portable antenna transmits a signal given from the portable wireless communication unit and gives the received signal to the portable wireless communication unit. The portable antenna may be realized by, for example, a telescopic rod antenna, or may be realized by a chip antenna that occupies a relatively small area when mounted on a printed circuit board.

  The portable wireless communication unit demodulates the signal received from the communication terminal device via the portable antenna at the time of reception and gives it to the portable control unit 27, and at the time of transmission the signal given from the portable control unit 27 Modulate and amplify and give to mobile antenna.

  The portable storage unit 26 is realized by, for example, a RAM. The RAM stores mobile side orientation data detected by the mobile side orientation sensor 21 and mobile side acceleration data detected by the mobile side acceleration sensor 22.

  The portable side control unit 27 includes a CPU, and based on a control program stored therein, the portable side direction sensor 21, the portable side acceleration sensor 22, the vibration generation unit 23, and the portable electronic device 3 that constitute the portable electronic device 3. The hardware resources including the audio output unit 24, the portable wireless communication unit 25, and the portable storage unit 26 are comprehensively controlled.

  The portable side control unit 27 stores the portable side azimuth data detected by the portable side azimuth sensor 21 and the portable side acceleration data detected by the portable side acceleration sensor 22 in the portable side storage unit 26. When the mobile side control unit 27 receives the data request information transmitted from the communication terminal device 2 by the mobile side wireless communication unit 25, the mobile side control unit 27 stores the mobile side azimuth data and the mobile side acceleration data stored in the mobile side storage unit 26. The portable wireless communication unit 25 is controlled to transmit to the communication terminal device 2.

  The portable side control unit 27 is information transmitted from the communication terminal device 2, and is a credit that uses a predetermined function of the communication terminal device main body, for example, a non-contact IC card technology, by the input operation unit 13 of the communication terminal device 2. When information indicating that a command for executing a function has been input is received by the portable wireless communication unit 25, the vibration generating unit 23 is vibrated or a predetermined warning sound such as electronic Outputs a buzzer sound.

  In the present embodiment, the terminal-side communication means corresponds to the terminal-side wireless communication unit 15. The terminal side detection means corresponds to the terminal side direction sensor 11 and the terminal side acceleration sensor 12. The input means corresponds to the input operation unit 13. The control unit and the communication availability determination unit correspond to the terminal-side control unit 17. The portable side communication means corresponds to the portable side wireless communication unit 25. The portable side detection means corresponds to the portable side direction sensor 21 and the portable side acceleration sensor 22.

  FIG. 2 is a diagram for explaining detection of terminal side azimuth data and terminal side acceleration data in the communication terminal device 2. FIG. 3 is a diagram for explaining detection of portable side orientation data and portable side acceleration data in the portable electronic device 3.

  In the terminal-side control unit 17 of the communication terminal device 2, azimuth difference data representing a difference value between the terminal-side azimuth data detected by the terminal-side azimuth sensor 11 and the mobile-side azimuth data received by the terminal-side wireless communication unit 15 is obtained. The calculated azimuth difference data is compared with a predetermined first threshold value to determine whether the azimuth difference data is larger than the first threshold value.

  In the present embodiment, the orientation represented by the terminal side orientation data and the mobile side orientation data is based on two axes of east-west and north-south, and is divided into 16 azimuths at equal intervals, that is, east, west , South, north, northeast, southeast, northwest, southwest, northeast, northeast, east southeast, south southeast, south southwest, west southwest, west northwest, north northwest. In addition, based on a method of expressing each direction as an angle with respect to the north (hereinafter sometimes referred to as “azimuth angle”), north is 0 degree or 360 degrees, northeast is 45 degrees, east is 90 degrees, southeast Is 135 degrees, south is 180 degrees, southwest is 225 degrees, west is 270 degrees, and northwest is 315 degrees. Therefore, the azimuth intervals of east, west, south, and north are 90 degrees (right angle), and the azimuth intervals of east, west, south, north, northeast, southeast, northwest, and southwest are 45 degrees. Furthermore, the azimuth interval of east, west, south, north, northeast, southeast, northwest, southwest, north northeast, east northeast, east southeast, south southeast, south southwest, west southwest, west northwest, north northwest is 22 degrees 30 minutes.

  In the present embodiment, a difference value that is an absolute value of a difference between an azimuth angle corresponding to the absolute azimuth detected by the terminal side azimuth sensor 11 and an azimuth angle corresponding to the absolute azimuth detected by the mobile side azimuth sensor 21. Is calculated. At this time, when the difference value is larger than 180 degrees, a value obtained by subtracting the calculated difference value from 360 degrees is set as the azimuth difference data.

  In the present embodiment, it is determined whether or not the calculated azimuth difference data is greater than a first threshold that is set in advance, which is 22 degrees 30 minutes in the present embodiment. For example, it is detected that the predetermined azimuth X1 of the communication terminal device body is “north”, that is, the azimuth angle is 0 degree, and the predetermined azimuth A1 of the portable electronic device body is “northwest”, that is, the azimuth angle is 315 degrees. First, a difference value that is an absolute value of a difference between 0 degrees and 315 degrees is calculated. The difference value at this time is 315 degrees, which is larger than 180 degrees. Therefore, 45 degrees obtained by subtracting 315 degrees from 360 degrees is calculated as the azimuth difference data. The terminal-side control unit 17 determines that the calculated azimuth difference data “45 degrees” is larger than the first threshold value “22 degrees 30 minutes”. In this way, the relative orientation relationship between the communication terminal device main body and the portable electronic device main body is grasped.

  Further, in the terminal side control unit 17 of the communication terminal device 2, acceleration difference data representing a difference value between the terminal side acceleration data detected by the terminal side acceleration sensor 12 and the mobile side acceleration data received by the terminal side wireless communication unit 15. And the calculated acceleration difference data is compared with a predetermined second threshold value to determine whether the acceleration difference data is larger than the second threshold value.

  In the present embodiment, acceleration difference data (hereinafter referred to as “first acceleration difference data”) representing a difference value between an acceleration acting in the X-axis direction of the communication terminal device body and an acceleration acting in the A-axis direction of the portable electronic device body. Is calculated), and it is determined whether the calculated first acceleration difference data is larger than a predetermined second threshold, which is 0.2 G in the present embodiment. In the present embodiment, acceleration difference data (hereinafter referred to as “second acceleration difference”) representing a difference value between the acceleration acting in the Y-axis direction of the communication terminal device body and the acceleration acting in the B-axis direction of the portable electronic device body. Data ”may be calculated), and it is determined whether the calculated second acceleration difference data is larger than the second threshold value. The acceleration difference data of the present embodiment includes first acceleration difference data and second acceleration difference data.

  In the present embodiment, when the terminal-side control unit 17 determines that the azimuth difference data is greater than the first threshold value and the first and second acceleration difference data are greater than the second threshold value, the authorized user It is determined that there is a possibility that the communication terminal device 2 is illegally used by a third party other than the above, and a predetermined function of the communication terminal device main body, for example, a credit function using a non-contact IC card technology is stopped.

  FIG. 4 is a flowchart showing a processing procedure of the terminal-side control unit 17 regarding control of stopping and canceling predetermined functions of the communication terminal device 2. This process is repeatedly executed by the terminal-side control unit 17 when the communication terminal device 2 is powered on, in other words, when the communication terminal device 2 is operating.

  In step a1, terminal side orientation data and terminal side acceleration data are acquired from the terminal side storage unit 16. If terminal side direction data and terminal side acceleration data are acquired, it will progress to step a2. In step a2, it is determined whether or not communication using the portable electronic device 3 via Bluetooth is possible via the terminal-side wireless communication unit 15. If possible, the process proceeds to step a3. Proceed to step a7.

  In step a 3, the data request information is transmitted to the portable electronic device 3 by the terminal-side wireless communication unit 15. If data request information is transmitted, it will progress to step a4. In step a4, the mobile-side azimuth data and mobile-side acceleration data received by the terminal-side wireless communication unit 15 and stored in the terminal-side storage unit 16 are acquired from the terminal-side storage unit 16. When mobile side azimuth data and mobile side acceleration data are acquired, the process proceeds to step a5.

  In step a5, azimuth difference data representing a difference value between the terminal-side azimuth data acquired in step a1 and the portable-side azimuth data acquired in step a4 is calculated, and the terminal-side acceleration data acquired in step a1 First acceleration difference data and second acceleration difference data are calculated based on the mobile-side acceleration data acquired in a4. When the azimuth difference data and the first and second acceleration difference data are calculated, the process proceeds to step a6.

  In step a6, it is determined whether or not the azimuth difference data is greater than the first threshold value and the first and second acceleration difference data are greater than the second threshold value. If the azimuth difference data is larger than the first threshold and the first and second acceleration difference data are larger than the second threshold in step a6, the communication terminal device 2 may be undesirably used by a third party. It is determined that there is, and the process proceeds to step a7. In step a6, if the azimuth difference data is equal to or smaller than the first threshold value or the first and second acceleration difference data is equal to or smaller than the second threshold value, it is determined that the communication terminal device 2 is carried by the user, and step a8 is performed. Proceed to

  In step a7, a predetermined function of the communication terminal device body, for example, a credit function using a non-contact IC card technology is stopped. When the predetermined function is stopped, this process is terminated.

  In step a8, it is determined whether or not a predetermined function of the communication terminal device main body is stopped. If it is stopped, the process proceeds to step a9, and if not stopped, the process returns to step a1. In step a9, the stop state of the predetermined function of the communication terminal device main body, for example, the credit function using the non-contact IC card technology is released. When the predetermined function stop state is canceled, this process is terminated.

  FIG. 5 is a flowchart showing a processing procedure of the portable side control unit 27 regarding transmission processing of portable side azimuth data and portable side acceleration data. This process is repeatedly executed by the portable side control unit 27 when the power source of the portable electronic device 3 is on, in other words, when the portable electronic device 3 is operating.

  In step b1, it is determined whether or not the data request information is received from the communication terminal device 2 by the portable wireless communication unit 25. If received, the process proceeds to step b2, and if not received, it is received. Wait until.

  In step b <b> 2, portable side orientation data and portable side acceleration data received by the portable wireless communication unit 25 and stored in the portable storage unit 26 are acquired from the portable storage unit 26. When mobile side azimuth data and mobile side acceleration data are acquired, the process proceeds to step b3.

  In step b3, the portable side orientation data and the portable side acceleration data acquired in step b2 are transmitted to the communication terminal device 2 by the portable side wireless communication unit 25. When the mobile-side azimuth data and the mobile-side acceleration data are transmitted, this process ends.

  As described above, according to the present embodiment, the communication terminal device 2 and the portable electronic device 3 are configured to be able to communicate with each other using Bluetooth, which is a short-range wireless standard. The portable side orientation data representing the orientation of the portable electronic device main body is detected by the portable side orientation sensor 21, and the portable side acceleration data representing the acceleration of the portable electronic device main body is detected by the portable side acceleration sensor 22. Terminal side orientation data representing the orientation of the communication terminal device main body is detected by the terminal side orientation sensor 11, and terminal side acceleration data representing the acceleration of the communication terminal device main body is detected by the terminal side acceleration sensor 12.

  The difference value between the azimuth difference data representing the difference value between the portable side azimuth data and the terminal side azimuth data, the acceleration acting in the X-axis direction of the communication terminal device body, and the acceleration acting in the A-axis direction of the portable electronic device body. The second acceleration difference data representing the first acceleration difference data representing the difference value between the acceleration acting in the Y-axis direction of the communication terminal device body and the acceleration acting in the B-axis direction of the portable electronic device body is Each is calculated by the control unit 17.

  In the present embodiment, the calculated azimuth difference data is compared with a predetermined first threshold, the calculated first and second acceleration difference data are compared with a predetermined second threshold, and the azimuth difference data is The terminal-side control unit 17 determines whether the first threshold difference data is larger than the first threshold value and whether the first and second acceleration difference data is larger than the second threshold value.

  When it is determined that the azimuth difference data is larger than the first threshold value and the first and second acceleration difference data are larger than the second threshold value, a predetermined function of the communication terminal device body, for example, a non-contact IC card technology The credit function using is stopped.

  Therefore, even when the user of the communication terminal device 2 is located away from the communication terminal device 2, for example, the azimuth difference data is larger than the predetermined first threshold value, and the first and second acceleration difference data are predetermined. When larger than 2 threshold values, the predetermined function of the communication terminal device body is stopped. As a result, personal information relating to the user of the communication terminal device 2, for example, telephone book data, can be prevented from being viewed undesirably by a third party other than the user of the communication terminal device 2. Can keep confidentiality. In addition, unauthorized use of the communication terminal device 2 by the third party can be reliably prevented.

  Further, in order to enable or disable the operation state of the anti-theft function, unlike the prior art in which the user needs to operate a predetermined switch, the user can perform communication without operating the input operation unit 13. The predetermined function of the terminal device body can be stopped.

  Therefore, the convenience of the user of the communication terminal device 2 and the portable electronic device 3 can be improved as compared with the prior art, and the switch is undesirably operated by a third party other than the user, and the communication is performed. It is possible to prevent the terminal device 2 from being illegally used. As a result, security can be improved as compared with the prior art.

  Further, according to the present embodiment, whether or not the communication terminal device 2 can communicate with the portable electronic device 3 via Bluetooth via the terminal-side wireless communication unit 15 is determined by the terminal-side control unit 17. It is determined by. When the terminal-side control unit 17 determines that communication with the portable electronic device 3 is impossible, the predetermined function of the communication terminal device body is stopped.

  Therefore, even when the communication terminal device 2 cannot communicate with the portable electronic device 3 via the terminal-side wireless communication unit 15, the predetermined function of the communication terminal device body is stopped, so that the user of the communication terminal device 2 Can be reliably prevented from being viewed undesirably by a third party other than the user of the communication terminal device 2, and the confidentiality of the personal information can be maintained. In addition, unauthorized use of the communication terminal device by the third party can be reliably prevented, and security can be significantly improved as compared with the conventional technology.

  FIG. 6 is a flowchart illustrating a processing procedure of the terminal-side control unit 17 regarding transmission of information indicating that a function execution command has been input. This process is repeatedly executed by the terminal-side control unit 17 when the communication terminal device 2 is powered on, in other words, when the communication terminal device 2 is operating.

  Step c1 is a command for executing a predetermined function of the communication terminal device main body by the input operation unit 13 when the predetermined function of the communication terminal device main body, for example, the credit function using the non-contact IC card technology is stopped. It is determined whether or not a function execution command has been input. If it has been input, the process proceeds to step c2, and if it has not been input, this process ends.

  In step c2, it is determined whether or not communication using the portable electronic device 3 via Bluetooth is possible via the terminal-side wireless communication unit 15. If possible, the process proceeds to step c3. This process is terminated.

  In step c <b> 3, the terminal side wireless communication unit 15 transmits information indicating that the function execution command has been input to the portable electronic device 3. When information indicating that a function execution command has been input is transmitted, this process is terminated.

  FIG. 7 is a flowchart illustrating a processing procedure of the mobile-side control unit 27 regarding notification of an abnormal state of the communication terminal device 2. This process is repeatedly executed by the portable side control unit 27 when the power source of the portable electronic device 3 is on, in other words, when the portable electronic device 3 is operating.

  In step d1, it is determined whether or not information indicating that the function execution command has been input is received from the communication terminal device 2 by the portable wireless communication unit 25, and if it is received, the process proceeds to step d2. If not, the process is terminated.

  In step d2, the vibration generating unit 23 is vibrated or a predetermined warning sound, for example, an electronic buzzer sound is output from the audio output unit 24, and the abnormal state of the communication terminal device 2 is indicated to the user of the communication terminal device 2. Inform. The abnormal state of the communication terminal device 2 refers to a state where the communication terminal device 2 is illegally used by a third party, for example. When the vibration generating unit 23 is vibrated or a predetermined warning sound is output from the audio output unit 24, the present process is terminated.

  As described above, according to the present embodiment, a function execution command for executing a predetermined function of the communication terminal device body can be input by the input operation unit 13. When the predetermined function of the communication terminal device main body is stopped, the terminal-side control unit 17 determines whether or not the input operation unit 13 is operated and a function execution command is input. When the terminal-side control unit 17 determines that a function execution command has been input, information indicating that the function execution command has been input is transmitted to the portable electronic device 3 via the terminal-side wireless communication unit 15.

  Whether or not information indicating that a function execution command has been input has been received from the communication terminal device 2 is determined by the mobile-side control unit 27, and information indicating that a function execution command has been input has been received The vibration generating unit 23 is vibrated or a predetermined warning sound, for example, an electronic buzzer sound, is output from the audio output unit 24.

  Therefore, even when the user of the communication terminal device 2 does not carry the communication terminal device 2, the user's communication terminal device 2 is caused by the vibration of the vibration generating unit 23 or the sound output from the audio output unit 24. It is possible to immediately grasp that it is illegally used by a third party other than the user. As a result, the user of the communication terminal device 2 can quickly perform processing such as reporting to the police that the communication terminal device 2 has been stolen and being used illegally, or searching around.

  In addition, according to the present embodiment, Bluetooth used for communication between the communication terminal device 2 and the portable electronic device 3 can be used with less power, shorter distance, and unlicensed and smaller than other wireless communication. It has convenience such as. Therefore, the communication terminal device 2 and the portable electronic device 3 communicate with each other using Bluetooth, whereby the communication system 1 can be easily constructed.

  The above-described embodiment is merely an example of the present invention, and the configuration can be changed within the scope of the invention. For example, in the above-described embodiment, the case where the terminal-side acceleration sensor 12 and the mobile-side acceleration sensor 22 are realized by a biaxial acceleration sensor has been described. .

  A method of calculating acceleration difference data when the terminal-side acceleration sensor 12 and the mobile-side acceleration sensor 22 are realized by a triaxial acceleration sensor will be described. Based on the absolute azimuth detected by the terminal-side azimuth sensor 11 and the portable-side azimuth sensor 21, for example, the axis extending in the east-west direction is the X axis, the axis extending in the north-south direction is the Y axis, and orthogonal to the X axis and the Y axis. The axis extending in the direction of the movement is taken as the Z axis.

  An axis extending parallel to the longitudinal direction in a rectangular plane perpendicular to the thickness direction of the communication terminal device body formed in a rectangular parallelepiped shape is defined as an x axis, and an axis extending in a direction perpendicular to the x axis in the plane is defined as a y axis. An axis extending in the direction perpendicular to the x-axis and the y-axis, which is the thickness direction of the communication terminal device body, is defined as the z-axis.

  Further, an axis extending parallel to the longitudinal direction of a rectangular plane perpendicular to the thickness direction of the portable electronic device body formed in a rectangular parallelepiped shape is defined as a axis, and an axis extending in a direction perpendicular to the a axis in the plane is defined as b. An axis extending in the direction perpendicular to the a-axis and the b-axis, which is the thickness direction of the portable electronic device body, is defined as a c-axis.

  The terminal-side acceleration sensor 12 detects inclination angles of the x-axis, y-axis, and z-axis with respect to the X-axis, Y-axis, and Z-axis as terminal-side acceleration data. More specifically, an angle θx formed by the X axis and the x axis, an angle θy formed by the Y axis and the y axis, and an angle θz formed by the Z axis and the z axis are detected as terminal-side acceleration data.

  The mobile side acceleration sensor 22 detects inclination angles of the a axis, the b axis, and the c axis with respect to the X axis, the Y axis, and the Z axis as mobile side acceleration data. Specifically, an angle θa formed by the X axis and the a axis, an angle θb formed by the Y axis and the b axis, and an angle θc formed by the Z axis and the c axis are detected as mobile-side acceleration data.

  The terminal-side control unit 17 calculates the difference value between the angle θx and the angle θa, the difference value between the angle θy and the angle θb, and the difference value between the angle θz and the angle θc as first to third acceleration difference data, respectively. Then, the first to third acceleration difference data is compared with a predetermined threshold value.

  When the terminal-side control unit 17 determines that the azimuth difference data calculated in the same manner as in the above-described embodiment is larger than the first threshold value, and the first to third acceleration difference data is larger than a predetermined threshold value, It is determined that there is a possibility that the communication terminal device 2 is illegally used by a third party other than an authorized user, and a predetermined function of the communication terminal device body, for example, a credit function using a non-contact IC card technology May be stopped.

  As described above, the terminal-side acceleration sensor 12 detects the tilt angles of the x-axis, y-axis, and z-axis with respect to the X-axis, Y-axis, and Z-axis as terminal-side acceleration data, and the mobile-side acceleration sensor 22 detects the X-axis. Even if the configuration is such that the inclination angles of the a-axis, b-axis, and c-axis with respect to the Y-axis and the Z-axis are detected as mobile-side acceleration data, the same effects as those of the above-described embodiment can be obtained.

  In the above-described embodiment, the case where the credit function using the non-contact IC card technology in the communication terminal device main body is stopped has been described. However, the function of the communication terminal device main body to be stopped is not limited to this, and the communication, electronic Functions such as a typical telephone directory and schedule book, transmission / reception of electronic mail, and Internet connection may be used.

  The portable electronic device 3 according to another embodiment of the present invention may include a display unit that displays information. The portable electronic device 3 receives a function execution command from the communication terminal device 2. When the information indicating that the function execution command has been received is received, information indicating that the function execution command has been input may be displayed on the display means.

It is a block diagram which shows the structure of the communication system 1 which is one Embodiment of this invention. It is a figure for demonstrating the detection of the terminal side azimuth | direction data and terminal side acceleration data in the communication terminal device 2. FIG. FIG. 6 is a diagram for explaining detection of mobile side orientation data and mobile side acceleration data in the mobile electronic device 3. 7 is a flowchart illustrating a processing procedure of a terminal-side control unit 17 regarding control of stopping and canceling a predetermined function of the communication terminal device 2. It is a flowchart which shows the process sequence of the portable side control part 27 regarding the transmission process of portable side direction data and portable side acceleration data. It is a flowchart which shows the process sequence of the terminal side control part 17 regarding transmission of the information that the function execution instruction | command was input. 7 is a flowchart showing a processing procedure of the mobile side control unit 27 regarding notification of an abnormal state of the communication terminal device 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Communication system 2 Communication terminal device 3 Portable electronic device 11 Terminal side direction sensor 12 Terminal side acceleration sensor 13 Input operation part 15 Terminal side wireless communication unit 17 Terminal side control part 21 Portable side direction sensor 22 Portable side acceleration sensor 25 Portable side Wireless communication unit 27 Mobile controller

Claims (4)

A communication system including a portable electronic device carried by a user and a communication terminal device configured to be communicable with the portable electronic device,
Portable electronic devices
A portable communication means capable of communicating with the communication terminal device;
Portable side orientation data representing the orientation of the portable electronic device main body, and portable side detection means for detecting portable side acceleration data representing the acceleration of the portable electronic device main body,
The communication terminal device
A terminal-side communication means capable of communicating with the portable electronic device;
Terminal-side detection means for detecting terminal-side azimuth data representing the azimuth of the communication terminal apparatus main body, and terminal-side acceleration data representing acceleration of the communication terminal apparatus main body,
Calculate azimuth difference data representing a difference value between portable side azimuth data and terminal side azimuth data, and acceleration difference data representing a difference value between portable side acceleration data and terminal side acceleration data,
Whether to stop the predetermined function of the communication terminal device main body based on the comparison result between the calculated azimuth difference data and the predetermined first threshold value, and the comparison result between the calculated acceleration difference data and the predetermined second threshold value And a control means for controlling the communication system. The communication terminal device further includes communication enable / disable determining means for determining whether or not communication with the portable electronic device is possible via the terminal side communication means,
2. The communication according to claim 1, wherein the control unit stops a predetermined function of the communication terminal device main body when the communication enable / disable determining unit determines that communication with the portable electronic device is impossible. system. The communication terminal device further includes an input means for inputting a command for executing a predetermined function of the communication terminal device body,
The control means determines whether or not the command is input by the input means when the predetermined function of the communication terminal device main body is stopped, and if the control means determines that the command is input, the command is input. 3. The communication system according to claim 1, wherein the terminal-side communication means is controlled so as to transmit information to the effect to the portable electronic device.   The communication system according to any one of claims 1 to 3, wherein the portable electronic device and the communication terminal device communicate using Bluetooth.

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