JP4458365B2 - Communication terminal - Google Patents

Description

  The present invention relates to prevention of unauthorized use in a communication terminal such as a mobile phone.

  Conventionally, in the case of a mobile phone, if the phone is lost or stolen, personal information can be seen or used illegally. In order to prevent such a problem, some mobile phones are provided with a lock function that disables other key operations when a password is not input. As an example of such a technique, for example, Patent Document 1 discloses a technique for inputting a password for each transmission / reception.

Further, in Patent Document 2, even if the owner of the mobile phone forgets to operate the command button for operating the lock function, the lock function is automatically applied immediately after the telephone call is finished or after a predetermined time. Techniques to do this are disclosed.
JP 2001-320472 A Japanese Patent Laid-Open No. 11-4291

However, the above-described prior art has a problem that, for example, the owner must always enter a password to release the lock every time a call is made, resulting in a very complicated mobile phone.
The present invention has been made in view of the above problems, and provides a communication terminal that prevents inconvenience even if the owner uses it normally and prevents personal information from being stolen or used illegally. .

The communication terminal selects a storage unit that stores data, a setting unit that selects data stored in the storage unit, sets the specific data, and the data set as the specific data by the setting unit. Control means for controlling use restriction for restricting use of the communication terminal or use prohibition for prohibiting use of the communication terminal when an access operation is performed by the operation means, and the setting means is stored in the storage means. When the stored data is selected and set as specific data, the time information regarding the selected data is updated based on the time information when the specific data is set .
In addition, the communication terminal selects a storage unit that stores data, a setting unit that selects data stored in the storage unit and sets the data as specific data, and the data set as specific data by the setting unit Control means for controlling use restriction for restricting use of the communication terminal or use prohibition for prohibiting use of the communication terminal when an access operation is performed on the operation means, and the setting means includes the storage In the state where the data stored in the means is selected and set as the specific data, when new data is stored in the data folder storing the specific data, time information regarding the specific data is obtained. The update is performed based on time information when new data is stored .

  The communication terminal of the present invention can prevent unauthorized use by shifting to the use prohibition or use restriction mode of the communication terminal when specific data is accessed.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a block diagram when a mobile phone 100, which is a typical example of a communication terminal, is used to explain a method for preventing unauthorized use of a communication terminal.
A cellular phone (communication terminal) 100 shown in FIG. 1 includes an antenna 1, a radio unit 2, an operation unit 3, an audio processing unit 4, a control unit 6, a storage unit 5, a function unit 7, a display unit 8, a speaker 9, a microphone ( Microphone) 10.
Furthermore, the control unit 6 includes a reception control unit, a transmission control unit, a notification processing unit, a key input control unit, and the like (not shown).

  The antenna 1 is connected to the radio unit 2 and is provided for transmitting or receiving a radio signal with a base station (not shown). In the case of reception, a radio signal transmitted from the base station is received by the antenna 1, and this received signal is output to the radio unit 2. In the case of transmission, a high frequency, high output radio signal sent from the radio unit 2 is transmitted to the base station.

  The radio unit 2 includes a transmission / reception unit and a modulation / demodulation unit. The receiving unit is composed of a high frequency amplifier, a receiving mixer, a demodulator, a delay detector, a spectrum spreader, etc., and the transmitting unit is a transmission power amplifier, a transmission mixer, an IQ quadrature modulator, a spectrum despreader, etc. It consists of

  The wireless unit 2 performs processing related to wireless communication with a base station configuring a wireless network. For example, transmission data supplied from the control unit 6 is subjected to predetermined modulation processing to be converted into a radio signal and transmitted from the antenna 1. On the other hand, the radio signal received by the antenna 1 is demodulated and converted into received data, decoded, and output to the control unit 6.

  The operation unit 3 has keys having various functions such as numeric keys, character keys, arrow keys, and decision keys. The user operates these keys to convert the key data into electric signals. Output to the control unit 6.

The audio processing unit 4 includes a DSP (Digital Signal Processor), an A / D (analog-digital) or D / A (digital-analog) converter, an AF (Audio Frequency) amplifier, and the like, and is supplied from the control unit 6. The processed audio signal is processed and output to the speaker 9. In addition, the sound input from the microphone 10 is processed as an audio signal and output to the control unit 6.
For example, an audio signal input from the microphone 10 is amplified, A / D converted, further subjected to signal processing such as encoding, and the digital audio signal is output to the control unit 6. On the other hand, the audio data supplied from the control unit 6 is D / A converted and converted into an analog audio signal, then amplified and output to the speaker 9.

The storage unit 5 includes a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The ROM stores information necessary for the operation of the mobile phone, a program for operating a control CPU (microcomputer) provided in the control unit 6, and the like. The control CPU operates according to this program. In addition, the control program includes a program describing each step for preventing unauthorized use of the mobile phone 100 described later.
The RAM stores information for sending and receiving e-mails of the mobile phone 100. For example, information obtained by processing by the control unit 6 when receiving service information, peripheral base station information received from an access point as a base station, and the like are stored.
The RAM also stores e-mail, SMS (Short Message Service) transmission / reception folders, recording data folders such as photos and moving pictures, an address book, and the like.

The control unit 6 performs various processes related to the overall operation of the mobile phone 100.
For example, it controls creation of outgoing mail, storage of incoming mail, transmission / reception of mail, input of characters and numerical values from the operation unit 3, display of sent / received mail on the display unit 8, and the like.

  Furthermore, the control unit 6 includes a microcomputer (CPU) that executes processing based on a control program (operating system, application, etc.) stored in the storage unit 5 as described above. Therefore, a predetermined process is executed.

  The function unit 7 is controlled by a control CPU (microcomputer) incorporated in the control unit 6 by using the storage unit 5 and the control unit 6, and functions such as e-mail and address book peculiar to mobile phones, and others Functional operations such as an electronic money / electronic payment application and a broadcast receiving application (for example, a digital broadcast receiving application) are performed.

  The display unit 8 is configured using a display device such as a liquid crystal display (LCD) panel or an organic EL (Electro Luminescence) panel, and displays an image corresponding to image data supplied from the control unit 6. indicate. For example, the destination telephone number at the time of outgoing call, the telephone number of the other party at the time of incoming call, the contents of the received mail and the outgoing mail, the standby screen, date, time, remaining battery level, etc. are displayed.

Next, the processing procedure of the unauthorized use prevention method for the mobile phone 100 of the present invention will be described based on the flowcharts of FIGS. Hereinafter, specific data will be described as “trap”, and will be described as “trap data”.
The program set for preventing unauthorized use stored in the storage unit 5 of the mobile phone 100 is configured by a security mode and a trap data setting mode.

When the mobile phone 100 according to the present embodiment shifts to the trap setting mode, the mobile phone 100 selects and cancels trap data.
With this trap setting, when data with a trap set is accessed, the use of the mobile phone 100 is prohibited or restricted thereafter. In the security mode, the use of the cellular phone 100 may be prohibited or restricted by accessing the trap set data.

  The security mode is a mode in which subsequent use prohibition and use restriction of the mobile phone 100 are operated when the data set with the trap is accessed. When the use prohibition or use restriction operates, the operation is not canceled unless authenticated by a password or the like.

  Next, the flowchart shown in FIG. 2 will be described. In this FIG. 2, trap data using e-mail data, SMS (Short Message Service) data, recorded data such as photos and videos, outgoing / incoming call history (data), address book data, etc. An example of setting will be described.

  In step S1-1, the cellular phone 100 shifts to the trap setting mode by a user operation or the like.

  If trap data is selected in step S1-2, the process proceeds to step S1-3. If not selected, the process proceeds to step S1-4.

  In step S1-3, when the selection and setting of trap data is completed, or when nothing is set, the data browsing format is set to the default display (date mode), the trap setting mode is exited, and the process ends. END).

  In step S1-4, when the trap data is not selected in step S1-2 or when all of the trap data to be set is not completed, the key of the operation unit 3 is operated to store the storage unit 5 The display unit displays mail data received (incoming) so far, SMS transmission / reception folder data recorded in the storage unit 5, recorded data such as photos and videos, outgoing / incoming history data, and address book data. 8 is displayed, and data is arbitrarily selected from them.

In step S1-5, it is set whether the selected data is to be trap data (ON) or released (OFF), and when it is turned ON, the date of the data is updated.
For example, when mail data is set as trap data, the date is updated to a new date (for example, the date at that time). As a result, when the data list is displayed, it is displayed immediately. The time may be updated similarly.
The date is also updated in the same way for recorded data such as photos and videos and outgoing / incoming call history data. If the date is not related to the data display, the date need not be updated.
If trap data has been set in the past, the data may be continued as it is, but the date may be updated in the same manner when new trap data is set.
Set ON / OFF of the selected trap data, transition to step S1-2 when the date is updated as necessary, then perform a series of operations according to this flow, and transition to step S1-3 when selection is completed Is finished (END).

  Next, the security mode will be described using the flowchart shown in FIG. 3 and the mobile phone 100 shown in FIG.

  In step S2-1, it is determined whether the data selected and accessed by key operation is data set for trapping by the microcomputer of the control unit 6.

  In step S2-2, if it is determined whether or not the selected and accessed data is trap data, if the trap data is accessed, use of the mobile phone 100 is prohibited or restricted. For example, the use of functions such as electronic money and electronic payment applications existing in the functional unit 7 of the mobile phone 100 is prohibited, outgoing and incoming calls are prohibited, and access to specific folders and files (data) is restricted. To do.

  In step S2-3, when use prohibition or use restriction is performed, functional operations such as calling, e-mail, electronic money / electronic payment application as the mobile phone 100 are prohibited, and the microcomputer of the control unit 6 displays the display unit. A message such as “Enter your password or go to the nearest shop…” is displayed.

  In step S2-4, in response to the password input request displayed on the display unit 8, the user inputs a password such as a personal identification number by a key operation from the operation unit 3.

In step S2-5, when a password is input, authentication verification is performed using a microcomputer, and the process waits until user authentication is performed.
As a result of the authentication verification, if the entered password is approved in conformity with the authentication number (password) set by the holder of the mobile phone 100, the process proceeds to step S2-6. Return to 4. If the input password is not approved, a message requesting to input the password again is displayed on the display unit 8.

  In step S2-6, if the user is authenticated as a result of the authentication verification, the use prohibition or the use restriction of the mobile phone 100 is released.

  The operation of the trap setting mode and the security mode has been described so far, but this is applied when trap data exists. However, when there is no trap data, the above processing is not performed even in the security mode.

  Next, updating of the trap data will be described with reference to the flowchart of FIG. 4 and FIG.

  In step S 3-1, a process for storing new data by receiving an e-mail or shooting with a camera is performed.

  In step S3-2, the security mode is determined. If it is currently in the security mode (trap data is set), the process proceeds to step S3-3, and if not in the security mode, the process ends (END).

In step S3-3, the date of the trap data is updated to, for example, the date when the storage process was performed, and the process ends. In addition to the date, the time may be similarly updated.
Thereby, since the trap data is always displayed at the top of the data list, the possibility of accessing the trap data is increased when the trap data is displayed by date or time.

In addition, a method may be used in which the trap data that has not been displayed shifts to the display state with the latest date when the security mode is turned on.
In addition, the trap data described above may use original data, or a copy (copy) of the original data, or data generated by copying only predetermined information from the original data (for example, a file) You can also use a copy of the name.

  Next, a description will be given based on the screen transition diagram of FIG. 5A to 5C show screens of main operations for trap setting on the display unit 8 of the mobile phone 100. FIG. 5D to 5H show screens of main operations in the security mode.

For example, trap setting using e-mail will be described. After starting the mobile phone 100, the user opens the mail reception folder displayed on the display unit 8 by operating the keys of the operation unit 3. The state of the display screen at that time is shown in FIG.
The display unit 8 displays the contents (data) of the received folder related to mail, and stores, for example, new mail. The display content includes, for example, an incoming call number (serial number), a reception date, a reception time, a sender (FROM), a subject name (SUB), and the like. The reception date of the incoming call number 001 is January 20, 2005, the reception time is 10:59, the sender (FROM) is "Kano S ...", and the subject (SUB) is "Ohayo ~ Next, the reception date of the incoming call number 002 is January 8, 2005, the reception time is 9:21, the sender (FROM) is "HeroHero", the subject (SUB) is "HeroHero ~", ... Is displayed.

  FIG. 5B shows a display screen during trap selection. For example, the user selects mail with the incoming call number 002 in the reception folder. At this time, the display area related to the incoming call number 002 is colored in an arbitrary color so that the selected screen can be seen, so that the incoming call number selected by the user of the mobile phone 100 can be visually identified.

  FIG. 5C shows a display screen when an arbitrary mail is selected and determined. When trap data is selected and determined by a predetermined process, the mail of the incoming call number 002 is updated in date and displayed at the top of the data. As a result, the incoming call number 001 is replaced with 002, the reception date of the incoming call number 001 is January 20, 2005, the reception time is 11:19, then the sender (FROM) is “HeroHero”, and the subject (SUB) is It becomes "HeroHeroka ~". Next, the reception date of the incoming call number 002 is January 20, 2005, the reception time is 10:59, the sender (FROM) is “Kano S ...”, and the subject (SUB) is “Ohayo! ~ ". The subsequent data need not be changed.

Next, the operation in the security mode will be described with reference to FIGS.
FIG. 5D shows the display content displayed on the display unit 8 in the security mode. Here again, an example using electronic mail as trap data is shown.
It is assumed that the operator opens the mail reception folder (FIG. 5D) and selects the mail with the incoming call number 001.

Here, when the operator selects and determines the incoming call number 001, since the incoming call number 001 has set a trap (step S2-1 to step S2-5) in order to execute the security operation, the use prohibition operation works. The display screen of the display unit 8 displays a selection request menu of “Enter password or go to the nearest shop ...”, the input of the mobile phone 100 is restricted, and the function of the mobile phone 100 stops. (Step S2-6).
Thus, for example, when the operator is not the owner of the mobile phone, if the user selects without knowing that a trap is set in the data of a certain (reception) folder, the use of the mobile phone is immediately prohibited or restricted. To be.

Next, the operator of the mobile phone 100 opens the mail reception folder (FIG. 5D) and selects the mail with the incoming number 002 (FIG. 5G).
When the incoming number 002 for which no trap is set is determined, the contents of the mail with the incoming number 002 can be read. FIG. 5H shows the state of the display screen of the display unit 8 after the determination, and the contents of the mail are displayed.

  Further, although the mobile phone has been described, the present invention is not limited to this, and can also be applied to a communication terminal such as a PDA (Personal Digital Assistance).

As described above, the unauthorized use prevention method for a communication terminal and the communication terminal according to the present invention do not prevent normal use of the owner of the communication terminal unless specific data is accessed. However, when a third party uses the communication terminal and accesses specific data, the use is prohibited or restricted.
For example, in the case of the outgoing / incoming call history data, the access described above is a call operation performed based on the outgoing / incoming call history data, (2) in the case of mail, a detailed display operation such as a text, and (3) stationary In the case of image data, from file display to full screen display, (4) in the case of moving image data, movie playback, (5) in the case of browser, access to the address in the bookmark, (6) in the case of address book, the details It means display operation. The access is not limited to these.

It is a block diagram of embodiment of the unauthorized use prevention method of the communication terminal of this invention. It is a flowchart which shows the process sequence regarding the start mode of embodiment of the unauthorized use prevention method of the communication terminal of this invention. It is a flowchart which shows the process sequence regarding the security mode of embodiment of the unauthorized use prevention method of the communication terminal of this invention. It is a flowchart which shows the process sequence regarding the trap data update of embodiment of the unauthorized use prevention method of the communication terminal of this invention. It is a screen transition figure of embodiment of the unauthorized use prevention method of the communication terminal of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Antenna, 2 ... Radio | wireless part, 3 ... Operation part, 4 ... Audio | voice processing part, 5 ... Memory | storage part, 6 ... Control part, 7 ... Function part, 8 ... Display part, 9 ... Speaker, 10 ... Microphone, 100 ... Communication terminal (mobile phone).

Claims (2)

Storage means for storing data;
Setting means for selecting data stored in the storage means and setting as specific data;
Control for controlling use restriction for restricting use of a communication terminal or use prohibition for prohibiting use of a communication terminal when an operation is performed on the data set as specific data by the setting means. Means, and
The setting means, when selecting the data stored in the storage means and setting as specific data, updates the time information related to the selected data based on the time information when the specific data is set communication terminal characterized. Storage means for storing data;
Setting means for selecting data stored in the storage means and setting as specific data;
Control for controlling use restriction for restricting use of a communication terminal or use prohibition for prohibiting use of a communication terminal when an operation is performed on the data set as specific data by the setting means. Means, and
The setting means selects the data stored in the storage means, and when new data is stored in the data folder storing the specific data in a state where the data is set as specific data, communication terminal you and updates based on the time information when storing new data time information for the given data.

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