JP5709565B2 - Mobile terminal device - Google Patents

Description

  The present invention relates to a mobile terminal device such as a mobile phone or a PDA (Personal Digital Assistant).

  Conventionally, a mobile terminal device has been provided with an authentication function to prevent unauthorized use by a third party. For example, in order to be able to operate the mobile terminal device, a password made up of numbers, alphabets, etc. is required. In a mobile terminal device having such an authentication function, in order to improve security, in addition to a user ID and a password, an image of a small item carried by the user is registered as information for identity verification. Yes (see, for example, Patent Document 1).

JP 2009-239477 A

  In the above configuration, when the user uses the mobile terminal device, the user needs to input an ID and a password, photograph an accessory, and collate with the registration information. For this reason, the user must prepare small items when using the mobile terminal device, and needs to consider things other than the mobile terminal device.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a mobile terminal device capable of improving security.

A portable terminal device according to a first aspect of the present invention stores a display unit, a display control unit that controls the display unit, a detection unit that detects an input to the display unit, information, and an input method of the information And when the input of information is detected by the detection unit, the detected information and the input method of the information are collated with the information stored in advance in the storage unit and the input method of the information And an authentication unit that performs authentication. Here, the display control unit causes the display unit to display a first image corresponding to the input information, and when the input information is information input by a first input method, A second image for identifying that the input information is input by a second input method different from the first input method is displayed on the display unit in association with the first image.

  In the mobile terminal device according to this aspect, the authentication unit may be configured to determine the input method based on a movement of an input position with respect to the display unit when the information is input.

In the mobile terminal device according to this aspect, the first input method may be a flick to the display unit. The second input method may be a tap on the display unit.

In the mobile terminal device according to this aspect, the display control unit causes the display unit to display a key for inputting the information, and the input method includes the display when the information is input by the key. It may be configured to include an operation of moving the input position with respect to the unit by a predetermined distance or more.

  In the mobile terminal device according to this aspect, the input method may be configured to include an operation of moving the input position more than the predetermined distance within a predetermined time.

  In the mobile terminal device according to this aspect, the input method may be configured to include an operation of moving the input position in the predetermined direction by the predetermined distance or more.

A mobile terminal device according to a second aspect of the present invention stores a display unit, a display control unit that controls the display unit, a detection unit that detects an input to the display unit, information, and an input method of the information And when the input of information is detected by the detection unit, the detected information and the input method of the information are collated with the information stored in advance in the storage unit and the input method of the information And an authentication unit that performs authentication. Here, the authentication unit determines the input method based on movement of an input position with respect to the display unit when the information is input. The display control unit causes the display unit to display an image corresponding to the input information. Further, the input method, including an operation of moving the position of the image corresponding to the information displayed on the display unit.

  In the portable terminal device according to this aspect, the input method may be configured to include an operation of exchanging two images among the plurality of images based on the information displayed on the display unit.

  In the portable terminal device according to this aspect, the input method includes an operation of inserting a predetermined image between the other two images among the plurality of images based on the information displayed on the display unit. Can be configured.

A program according to a third aspect of the present invention is provided in a computer of a mobile terminal device including a display unit, a detection unit that detects an input to the display unit, and a storage unit that stores information and an input method of the information. A function of storing the information and the input method of the information in the storage unit, and when the input of the information is detected by the detection unit, the detected information and the input method of the information and the storage unit are stored in advance A function of performing authentication by comparing the input information and an input method of the information, and a function of displaying an image corresponding to the input information on the display unit. Here, the function of performing the authentication includes a function of determining the input method based on movement of an input position with respect to the display unit when the information is input. Further, the input method includes an operation of moving the position of an image corresponding to the information displayed on the display unit.

A program according to a fourth aspect of the present invention is provided in a computer of a portable terminal device including a display unit, a detection unit that detects an input to the display unit, and a storage unit that stores information and an input method of the information. The information and the input method of the information are stored in the storage unit, and when the input of the information is detected by the detection unit, the detected information and the input method of the information are stored in advance in the storage unit A function of performing authentication by collating the information and the input method of the information, and a first image corresponding to the input information is displayed on the display unit, and the input information is a first input When the information is input by a method, a second image for distinguishing the input information from a case where the input information is input by a second input method different from the first input method Imparting a function to be displayed on the display unit in association with the image.

  ADVANTAGE OF THE INVENTION According to this invention, the portable terminal device which can aim at the improvement of security can be provided.

  The effects and significance of the present invention will become more apparent from the following description of embodiments. However, the following embodiment is merely an example when the present invention is implemented, and the present invention is not limited to what is described in the following embodiment.

It is a figure which shows the external appearance structure of the mobile telephone which concerns on embodiment. It is a block diagram which shows the whole structure of the mobile telephone which concerns on embodiment. It is the figure which displayed the registration screen which concerns on embodiment on the display surface. It is a flowchart which shows the process sequence which registers the password which concerns on embodiment. It is a flowchart which shows the process sequence which registers the password which concerns on embodiment. It is the figure which displayed the authentication screen which concerns on embodiment on the display surface. It is a flowchart which shows the process sequence authenticated in embodiment. It is a flowchart which shows the process sequence authenticated in embodiment. It is a figure for demonstrating the number input method which concerns on embodiment. It is a figure for demonstrating the moving direction of the input position which concerns on embodiment.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an external configuration of the mobile phone 1. 1A and 1B are a front view and a side view, respectively.

  The mobile phone 1 has a cabinet 10 including a front surface and a back surface. A touch panel is arranged on the front surface of the cabinet 10. The touch panel includes a display 11 that displays an image and a touch sensor 12 that is superimposed on the display 11.

  The display 11 corresponds to a display unit that displays an image. The display 11 includes a liquid crystal panel 11a and a panel backlight 11b that illuminates the liquid crystal panel 11a. The liquid crystal panel 11a has a display surface 11c on which an image is displayed, and the display surface 11c appears outside. A touch sensor 12 is disposed on the display surface 11c. Note that other display elements such as an organic EL may be used instead of the liquid crystal panel 11a.

  The touch sensor 12 corresponds to a detection unit that detects an input to the display surface 11c. The touch sensor 12 is formed in a transparent sheet shape. The display surface 11 c can be seen through the touch sensor 12. The touch sensor 12 includes a first transparent electrode, a second transparent electrode, and a cover arranged in a matrix. The touch sensor 12 detects a position on the display surface 11c touched by the user (hereinafter referred to as “input position”) by detecting a change in capacitance between the first and second transparent electrodes. A position signal corresponding to the input position is output to the CPU 100 described later. The touch sensor 12 is not limited to the capacitive touch sensor 12, and may be an ultrasonic sensor, a pressure sensitive sensor, a resistive film sensor, a light detection sensor, or the like.

  Note that the user touching the display surface 11c means, for example, that the user touches the display surface 11c with a contact member such as a pen or a finger. The contact member or finger touching the display surface 11c may be stationary or may move. Further, the touching time may be short or long. Depending on the movement of the contact position and the contact time, the touching operation can be divided into operations such as tapping, sliding, and flicking. “Touch” refers to an operation in which the user makes a contact member or a finger touch the display surface 11c regardless of the movement of the contact position and the contact time, and is a general term for operations such as tap, slide, and flick. “Tap” refers to an operation of releasing the contact member or finger from the display surface 11c within a predetermined time after touching the display surface 11c so that the user taps the display surface 11c with the contact member or finger. “Slide” refers to an operation in which a user moves a contact member or a finger while touching the display surface 11c. The “flick” is an operation in which the user flips a screen displayed on the display surface 11c with a contact member or a finger, and the contact member or finger is moved over a predetermined distance within a predetermined time while being in contact with the display surface 11c. Say the action.

  A microphone (hereinafter referred to as “microphone”) 13, a speaker 14, and hardware input keys (hereinafter referred to as “hard keys”) 16 are arranged on the front surface of the cabinet 10.

  A lens window (not shown) of the camera module 15 (see FIG. 2) is disposed on the back surface of the cabinet 10. An image of the subject is taken into the camera module 15 from the lens window.

  FIG. 2 is a block diagram showing the overall configuration of the mobile phone 1.

  The mobile phone 1 according to the present embodiment includes a CPU 100, a memory 200, a video encoder 301, an audio encoder 302, a communication module 303, a backlight drive circuit 304, a video decoder 305, an audio decoder 306, a clock, in addition to the above-described components. 307 and a key input circuit 308 are provided.

The camera module 15 has an image sensor such as a CCD, and includes a photographing unit for photographing an image. The camera module 15 digitizes the image signal output from the image sensor, performs various corrections such as gamma correction on the image signal, and outputs the image signal to the video encoder 301. The video encoder 301 performs an encoding process on the imaging signal from the camera module 15 and outputs it to the CPU 100.

  The microphone 13 converts the collected sound into a sound signal and outputs the sound signal to the sound encoder 302. The audio encoder 302 converts an analog audio signal from the microphone 13 into a digital audio signal, encodes the digital audio signal, and outputs the digital audio signal to the CPU 100.

  The communication module 303 converts information from the CPU 100 into a radio signal and transmits it to the base station via the antenna 303a. Further, the wireless signal received via the antenna 303a is converted into information and output to the CPU 100.

  The backlight drive circuit 304 supplies a drive signal corresponding to the control signal from the CPU 100 to the panel backlight 11b. The panel backlight 11b is turned on by a drive signal from the backlight drive circuit 304 and illuminates the liquid crystal panel 11a.

  The video decoder 305 converts the video signal from the CPU 100 into an analog or digital video signal that can be displayed on the liquid crystal panel 11a, and outputs it to the liquid crystal panel 11a. The liquid crystal panel 11a displays an image corresponding to the video signal on the display surface 11c.

  The audio decoder 306 performs a decoding process on the audio signal from the CPU 100 and the sound signals of various notification sounds such as ringtones and alarm sounds, and further converts them into analog audio signals and outputs them to the speaker 14. The speaker 14 reproduces sound, notification sound, and the like based on the sound signal and sound signal from the sound decoder 306.

  The clock 307 measures time and outputs a signal corresponding to the measured time to the CPU 100.

  The key input circuit 308 outputs an input signal corresponding to the hard key 16 to the CPU 100 when the hard key 16 is pressed.

  The memory 200 is a storage unit including a ROM and a RAM. The memory 200 stores a control program for giving a control function to the CPU 100. Such a control program includes a control program for authenticating with a password.

A password registered as a condition for performing authentication is recorded in the memory 200. The password is composed of one or a plurality of items. Each item consists of a combination of a plurality of elements. Examples of the plurality of elements include a number input by a user operation and an input method when a number is input. Numbers 1 to 9 are used, and tap input and flick input are used as input methods. For example, four items are set for the password. For example, the first item is a combination of a number “1” and an input method “flick”, the second item is a combination of a number “2” and an input method “tap”, and the third item is a number “3”. The combination of the input method “tap” and the combination of the number “4” and the input method “flick” are set in the fourth item.

The memory 200 stores a position definition table. In the position definition table, the position of the image displayed on the display surface 11c is associated with the content indicated by the image. The image includes a text box, an icon, a button, and the like. The contents indicated by the image include instructions and processing related to files and programs. The numbers shown on the key buttons are associated with the positions of the number key buttons shown in FIG. Therefore, as will be described later, when the position of the key button of the number “1” is touched, the number “1” corresponding to the key button of the number “1” is specified.

  The CPU 100 specifies an instruction input from the user based on the position signal from the touch sensor 12 while referring to the position definition table in the memory 200. The CPU 100 operates the camera module 15, the microphone 13, the communication module 303, the panel backlight 11 b, the liquid crystal panel 11 a, and the speaker 14 according to a control program according to instructions from the user. Thereby, various applications such as a call function and an e-mail function are executed.

  As a display control unit, the CPU 100 controls the display 11 based on an instruction input from the user via the touch sensor 12. For example, the CPU 100 outputs a control signal for supplying a voltage to the panel backlight 11b to the backlight drive circuit 304, and turns on the panel backlight 11b. Further, the CPU 100 outputs a video signal to the video decoder 305 to display an image on the display surface 11c of the liquid crystal panel 11a. On the other hand, the CPU 100 turns off the panel backlight 11b by outputting to the backlight drive circuit 304 a control signal that does not supply voltage to the panel backlight 11b. Further, the CPU 100 performs control to erase the image from the display surface 11c of the liquid crystal panel 11a.

  For example, the registration screen shown in FIG. 3A is displayed on the display surface 11c under the control of the CPU 100. The registration screen includes four text boxes, a key button indicating a number from 0 to 9, and a key button indicating “OK”. The four text boxes are areas for inputting numbers in the four items of the password. Moreover, the authentication screen shown in FIG. 6 is displayed on the display surface 11c. The authentication screen is the same as the registration screen.

  Further, for example, as shown in FIG. 3B, four text boxes and numbers inputted in these text boxes are displayed on the display surface 11c. Note that the symbol “*” is displayed instead of the number after a predetermined time from the display of the number, and the input number is hidden. Thus, the numbers and the symbol “*” are displayed in the text box as “image corresponding to the input information” by the user.

  Furthermore, an identification image for identifying the method in which the number is input is displayed. For example, when a number is input by flicking, a mark “◯” is displayed as “an identification image for identifying an input method” in the text box. Here, if the input to the first and fourth items of the password is input by flicking, a mark is displayed in the first and fourth text boxes.

  The CPU 100 registers as a password in the memory 200 as a registration unit by combining numbers input by the user and a method of inputting the numbers. For example, when the user touches the key button of the number “1” shown in FIG. 3A by the user, a position signal is output from the touch sensor 12 to the CPU 100. Based on the position definition table, the CPU 100 specifies that the key button of the number “1” corresponds to the input position of the position signal, and the number “1” represented by the key button is input. In addition, the CPU 100 obtains the displacement amount of the input position within a predetermined time from when the finger is touched to when it is released. If the displacement amount of the input position is greater than or equal to a predetermined threshold, it is determined that the input is by flicking. On the other hand, if the displacement amount of the input position is less than the predetermined threshold value, it is determined that the input is a tap. The input method determined in this way is stored in the memory 200 as a password together with the number “1”.

As an authentication unit, the CPU 100 performs authentication by checking the number and the number input method input by the user with a password including the number and the number input method registered in the registration unit. As in the case of password registration, the CPU 100 determines the number entered in the text box and the input method, and temporarily stores it in the memory 200. It is determined whether or not the temporarily stored number and the input method match the password registered in the memory 200. If they match, it is determined that the authentication is successful. On the other hand, if they do not match, it is determined that the authentication has failed. As in the case of registration of the number input method, the input method is determined based on the amount of displacement of the input position due to the movement of the input position when a number is input.

  As a function control unit, the CPU 100 sets and cancels the key guard function according to the authentication determination result. The key guard setting is executed by a key guard setting operation, password registration, power OFF, panel backlight 11b extinction, hibernation start, predetermined button operation, and the like. The key guard setting operation includes receiving a predetermined number of calls from a telephone number registered within a predetermined time. When the key guard function is set, the input from the user through the touch sensor 12 or the like becomes invalid. On the other hand, when the key guard function is canceled, an input from the user is accepted and a process corresponding to the input is executed. Note that the input is invalid when the touch sensor 12 does not detect an input from the user and when the touch sensor 12 detects an input, the CPU 100 does not execute a process based on the input from the touch sensor 12. included.

<Processing procedure of the first embodiment>
FIG. 3A is a diagram in which a registration screen for inputting a registration password is displayed on the display surface 11c. FIG. 3B is a diagram showing a state where a number is entered in the password text box on the registration screen. 4 and 5 are flowcharts showing a processing procedure executed by the CPU 100 for registering a password in the memory 200. FIG.

  As shown in FIG. 1, an operation menu screen including six icon images is displayed on the display surface 11c. When the “registration” icon is selected by the user, a registration screen shown in FIG. 3A is displayed on the display surface 11c (S101).

When the user touches the display surface 11c with the finger, a position signal corresponding to the touched position is output from the touch sensor 12 to the CPU 100. Further, the input position corresponding to the position signal is temporarily stored in the memory. When the touched finger is released from the display surface 11c, the input position at the time of release is read from the memory (S102). If the position definition table is referred to and the input position at the time of release is within the range of the key button “1”, it is determined that the key button has been selected (S103: YES). Subsequently, the number “1” indicated by the key button is specified from the position definition table, and the number “1” is displayed in the first text box. When a predetermined time elapses after the number is displayed, the number “1” disappears and the symbol “*” is displayed as shown in FIG. 3B (S104).

Further, the amount of displacement of the input position is measured every predetermined time from the touch of the finger to the display surface 11c until the release (S105). If the amount of displacement immediately before the finger is released from the display surface 11c is, for example, 50 pixels or more within 50 ms, it is determined that the input is by flicking (S106: YES). For this reason, the mark “◯” is displayed in the first text box (S107).

  Here, the number “1” and the input method “flick” are combined and temporarily stored in the memory 200 as the first item of the password (S108).

Thus, by specifying the first item of the password, “1” is added to the order “1” of the first item, and then the order “n” of the item becomes “2” (S109). . If the item ranking “n” is less than “5” (S110: NO), the second text box corresponding to the second item becomes the operation target (S111). Thereby, the CPU 100 returns to the process of S102, and the same process as the input to the first text box and the registration of the first item is repeated.

That is, when the finger is released from the key button “2”, the input position immediately before the release is acquired (S102). Based on the position definition information, it is determined that the input position is within the range of the key button “2” (S103: YES). And the number “2” corresponding to the key button “2”
Is displayed in the second text box, and after a predetermined time, the symbol “*” is displayed instead of the numeral “2” (S104). Further, the amount of displacement immediately before the finger is released from the display surface 11c is measured (S105). If the amount of displacement is less than 50 pixels within 50 ms, for example, it is determined that the input method is tapped (S106: NO). ). The number “2” thus specified and the input method “tap” are combined and temporarily stored in the memory 200 as the second item of the password (S108). Subsequently, “1” is added to the rank “2” of the second item, and the rank “n” of the next item becomes “3” (S109). Since the item ranking “n” is less than “5” (
(S110: NO), the third text box corresponding to the third item becomes the operation target (S111). Again, the CPU 100 returns to the process of S102, and the processes of S102 to S111 are repeated in the same manner as described above until the item rank “n” reaches “5”.

As described above, when a number is input to the nth text box, the n + 1th text box is subsequently set as an operation target. When the user wants to input a number in a text box other than the text box set as the operation target, the user touches the text box to be input instead of the number key button (S103: NO) (S112). Thereby, the touched text box is set as an operation target (S113). And the process of S102-S111 is repeated. As a result, a number is input to the operation target text box. Further, the number and the input method are temporarily stored in the memory 200 as password items corresponding to the operation target text box.

Thus, if numbers are entered in all the text boxes corresponding to the first to fourth items, the item ranking “n” matches “5” (S110: YES). In this case, the first password
The numbers and input methods for all of the fourth items are temporarily stored in the memory 200. Therefore, when the user touches the key button “OK” with a finger, the input position by the touch is acquired (S114), and it is determined that the key button “OK” is selected (S115: YES).
. As a result, since the numbers and input methods for all of the first to fourth items of the password are determined, the numbers and input methods temporarily stored in the memory 200 are registered as the password (S116).

On the other hand, even if the numbers and the input method are once set for all of the first to fourth items of the password, it may be desired to correct the numbers input by the user. In this case, the user touches the text box corresponding to the item to be corrected with a finger. If the input position by the touch is within the range of the text box (S117: YES), the selected text box is set as the operation target (S118). Further, similarly to the processing of S102 to S108, the number and the input method corresponding to the input position are displayed in the operation target text box and temporarily stored as items corresponding to the operation target text box (S119). ~ S125). As a result, numbers and input methods are set for all items of the password. Thereafter, when the key button “OK” is selected (S115: YES), the set number and input method are registered as a password (S116).

  FIG. 6 is a diagram in which an authentication screen for inputting an authentication password is displayed on the display surface 11c. 7 and 8 are flowcharts showing a processing procedure for performing authentication based on the input password.

  When the hard key 16 is operated in a state where the key guard function is set, the authentication screen shown in FIG. 6 is displayed (S201), and the authentication process is started.

When the user releases the finger touching the display surface 11c from the numeric key button, the input position is acquired based on the position signal from the touch sensor 12 (S202). If the input position is within the range of the numeric key button (S203: YES), the numeric value corresponding to the key button is displayed in the first text box, and then a predetermined symbol is displayed instead of the numeric value after a predetermined time. (S204). If the displacement of the input position within a predetermined time immediately before the release is greater than or equal to a predetermined value, a mark indicating that is displayed in the first text box as an input by flicking (S206: YES, S107). On the other hand, if the displacement amount of the input position is less than the predetermined value, it is determined that the input method is a tap (S206: NO). The combination of the number and the input method input in this manner is temporarily stored in the memory 200 as input for the first item of the password (S208).

Subsequently, since the password item rank “n” becomes “2” (S209) and the item rank “n” is less than “5” (S210: NO), the second text box corresponding to the second item is displayed. It becomes an operation target (S211). The processes of S202 to S211 are repeated until the item rank “n” reaches “5”.

Normally, text boxes corresponding to the first to fourth items are sequentially set as operation targets. However, when the user wants to input a number in a text box other than the set operation target text box, if the user touches the text box in which the number is to be input (S202, S203: NO, S212: YES, S214, S215: NO, S217
: YES), the text box displayed at the touched input position is set as the operation target (S213, S218). And the process of S202-S211 and S219-s225 is repeated, a number and an input method are displayed on the operation target text box, and the number and the input method are temporarily stored for the item corresponding to the text box. The

Then, when a number is entered in all the text boxes corresponding to the first to fourth items (S210: YES), if the key button “OK” is touched, it is determined that the key button “OK” is selected. (S214, S215: YES). As a result, since the numbers and input methods for all of the first to fourth items of the password are determined, the combination of the determined numbers and input methods is collated with the registered password (S226). As a result of the collation, if the combination of the number and the input method matches the registered password, it is determined that the authentication is successful (S226: YES), and the key guard is released (S227). On the other hand, if the combination of the number and the input method does not match the registered password, it is determined that the authentication has failed (S22).
6: NO), the display of all text boxes and the numbers and input methods for all password items temporarily stored in the memory 200 are erased while the key guard is maintained. The operation target is set (S228). The CPU 100 returns to the process of S202 again.

  As described above, according to the present embodiment, not only the input number but also a combination of the number and the input method is used as the password item. Therefore, as the number of password combinations increases, the password is not easily released and the security is improved.

  Furthermore, the method of inputting numbers is simple because operations other than the input of numbers are not required by being determined at the time of inputting numbers.

Further, according to the present embodiment, the numbers displayed in the text box are displayed in place of the symbols after a predetermined time. For this reason, the user can confirm that the number has been input by looking at the symbol displayed in the text box, and the possibility that the number input by the symbol will be seen by others is reduced. In this way, user convenience and security are improved.

  Furthermore, according to this embodiment, a mark is displayed when flicking is input. Therefore, the user can easily confirm the input method based on the mark.

<Other embodiments>
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications other than those described above can be made to the embodiments of the present invention. .

  For example, in the above embodiment, the flick and tap input method is determined based on the displacement amount of the input position. Instead of or together with this, the moving direction of the input position can be used for the input method. In this case, when a finger is touched on the key button by the user, a displacement amount and a moving direction of the input position within a predetermined time from when the finger is touched to when the finger is released are obtained. The moving direction is determined based on the direction of the screen displayed on the display surface 11c. As shown in FIG. 10, when the X axis of the mobile phone 1 corresponds to the horizontal axis of the screen: W and the Y axis of the mobile phone 1 corresponds to the vertical axis of the screen: H, the coordinates of the touch position (X1, Y1 ) And the coordinates (X2, Y2) of the release position, an angle θ with respect to the horizontal axis W is obtained. This angle: θ corresponds to the moving direction.

  Moreover, in the said embodiment, the flick which an input position moves more than predetermined distance within predetermined time was used for the input method of a password. On the other hand, a slide in which the input position moves more than a predetermined distance regardless of time can also be used in the password input method.

  Furthermore, in the said embodiment, the tap whose time from a finger | toe touching a display surface to release is shorter than predetermined time was used for the password input method. On the other hand, a long touch in which the time from when the finger is touched to the display surface until the release is longer than a predetermined time can also be used for the password input method.

  Further, in the above embodiment, flicks and taps are used for the password input method, but other input methods may be used instead of or in addition to this input method. Other input methods may be operations that are determined by the movement of the input position by the user's touch, like flicks and taps. For example, the input method includes an operation of exchanging two numbers among a plurality of numbers displayed in a text box. In FIG. 9, the numbers in each text box are displayed without being replaced with symbols for easy understanding. As shown in FIG. 9A, in a state where numbers are input in the respective text boxes, the user touches the fourth text box on the display surface 11c and slides the finger on the second text box. Then, under the control of the CPU 100, as shown in FIG. 9B, the number “4” in the fourth text box and the mark “◯” indicating flick input are displayed in the second text box, and the number in the second text box. “2” is displayed in the fourth text box. That is, the number “4” and the input method “flick” of the fourth item of the password are replaced with the number “2” and the input method “tap” of the second item. Such replacement of numbers is also one of the input methods, and is registered in the memory 200 as one element of the password item. In this case, authentication is performed by the CPU 100 and the key guard is released only after the number “2” and the number “4” are switched after the user inputs four numbers.

As described above, when the operation of moving the number displayed in the text box is one of the input methods, the number of input methods used for authentication further increases. For this reason, the number of password combinations is further increased, and the security is further improved.

  Similar to the input method by this replacement, the insertion of numbers is also determined as the input method. Specifically, as shown in FIG. 9C, the user touches the fourth text box with a finger while a number is input in each text box, and between the first and second text boxes. The finger is slid to release from the display surface 11c. Then, under the control of the CPU 100, as shown in FIG. 9D, the number “4” in the fourth text box and the mark indicating the flick input method are displayed in the second text box, and the second and third text boxes are displayed. The numbers “2” and “3” are shifted one by one and displayed in the third and fourth text boxes. Thus, the second item of the password is set to the number “4” and the input method “flick”, the third item is set to the number “2” and the input method “tap”, and the fourth item is set to the number “3” and Input method is set to “tap”. As described above, the element of the fourth item is inserted into the second item in accordance with the movement of the input position, and the elements of the second and third items are replaced with the third and fourth items. That is, an operation for inserting a number and an input method is registered in the memory 200 as one element of the password item. In this case, after the user inputs four numbers and then inserts the number “4” between the numbers “1” and “2”, the CPU 100 performs authentication and releases the key guard. Is done.

  As described above, as with the replacement operation, the operation of inserting the displayed number is one of the input methods, thereby further improving the security.

  Furthermore, in the above-described embodiment, when the number and input method of the text box are corrected, the text box is set as an operation target by touching, and then the number key button is used to input the number into the operation target text box. It was. On the other hand, the numbers in the text box and the input method may be modified by the above-described replacement and insertion input methods. This facilitates modification of numbers and input methods.

  Further, in the above embodiment, numbers are used for the elements of each item of the password, but information such as characters (kana, katakana, alphabets, etc.) and symbols may be used instead of or together with the numbers. In this case, key buttons indicating numbers, characters, or symbols used as passwords are displayed on the registration screen and the authentication screen.

  Further, in the above embodiment, when the hard key 16 is operated in a state where the key guard is set, the authentication process is started. On the other hand, authentication may be started when the mobile phone becomes usable, such as when the power is turned on.

  Furthermore, in the embodiment described above, the cellular phone 1 having the shape shown in FIG. 1 is used, but the cellular phone 1 having a shape such as a folding type or a sliding type may be used. Moreover, it replaces with the mobile telephone 1, and portable terminal devices, such as PDA and PHS, may be used.

  In addition, the embodiment of the present invention can be variously modified as appropriate within the scope of the technical idea shown in the claims. For example, some or all of the above embodiments can be combined.

11 Display 12 Touch sensor 100 CPU
200 memory

Claims (11)

A display unit;
A display control unit for controlling the display unit;
A detection unit for detecting an input to the display unit;
A storage unit for storing information and a method of inputting the information;
When an input of information is detected by the detection unit, authentication is performed by comparing the detected information and the input method of the information with the information and the input method of the information stored in the storage unit in advance. An authentication unit to perform ,
The display control unit displays a first image corresponding to the input information on the display unit, and when the input information is information input by the first input method, the input is performed. A second image for identifying when information is input by a second input method different from the first input method is displayed on the display unit in association with the first image;
The portable terminal device characterized by the above-mentioned. The mobile terminal device according to claim 1,
The authentication unit determines the input method based on movement of an input position with respect to the display unit when the information is input.
The portable terminal device characterized by the above-mentioned. The mobile terminal device according to claim 2,
The first input method is a flick to the display unit, and the second input method is a tap to the display unit.
The portable terminal device characterized by the above-mentioned. The mobile terminal device according to claim 1,
The display control unit displays a key for inputting the information on the display unit,
The input method includes an operation of moving an input position with respect to the display unit when the information is input by the key by a predetermined distance or more.
The portable terminal device characterized by the above-mentioned. The mobile terminal device according to claim 4,
The input method includes an operation of moving the input position more than the predetermined distance within a predetermined time.
The portable terminal device characterized by the above-mentioned. In the portable terminal device according to claim 4 or 5,
The input method includes an operation of moving the input position in a predetermined direction by a predetermined distance or more.
The portable terminal device characterized by the above-mentioned. A display unit;
A display control unit for controlling the display unit;
A detection unit for detecting an input to the display unit;
A storage unit for storing information and a method of inputting the information;
When an input of information is detected by the detection unit, authentication is performed by comparing the detected information and the input method of the information with the information and the input method of the information stored in the storage unit in advance. An authentication unit to perform,
The authentication unit determines the input method based on movement of an input position with respect to the display unit when the information is input,
The display control unit displays an image corresponding to the input information on the display unit,
The input method includes an operation of moving a position of an image corresponding to the information displayed on the display unit,
The portable terminal device characterized by the above-mentioned. In the portable terminal device according to claim 7,
The input method includes an operation of replacing two images among images based on the plurality of information displayed on the display unit,
The portable terminal device characterized by the above-mentioned. In the portable terminal device according to claim 7,
The input method includes an operation of inserting a predetermined image between two other images among a plurality of images based on the information displayed on the display unit,
The portable terminal device characterized by the above-mentioned. In a computer of a mobile terminal device, comprising: a display unit; a detection unit that detects an input to the display unit; and a storage unit that stores information and an input method of the information.
A function of storing the information and an input method of the information in the storage unit;
When an input of information is detected by the detection unit, authentication is performed by comparing the detected information and the input method of the information with the information and the input method of the information stored in the storage unit in advance. Functions to do,
A function of displaying an image corresponding to the input information on the display unit;
A program that grants
The function of performing the authentication includes a function of determining the input method based on movement of an input position with respect to the display unit when the information is input,
The input method includes an operation of moving a position of an image corresponding to the information displayed on the display unit,
A program characterized by that. In a computer of a mobile terminal device, comprising: a display unit; a detection unit that detects an input to the display unit; and a storage unit that stores information and an input method of the information.
The information and the input method of the information are stored in the storage unit, and when the input of the information is detected by the detection unit, the detected information and the input method of the information are stored in advance in the storage unit A function of performing authentication by comparing the information and the input method of the information ;
When the first image corresponding to the input information is displayed on the display unit and the input information is information input by the first input method, the input information is the first information. A function of causing the display unit to display a second image for identifying a case where the input is performed by a second input method different from the input method, in association with the first image;
A program that grants.

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