KR101677846B1 - A portable terminal for processing input information, and a method for operating it - Google Patents

Abstract

A terminal according to the embodiment of the present invention, in a terminal for processing input information, comprises a keypad layer generating part which generates a virtual keypad layer for inputting an interface; a visual encryption pattern processing part which generates the display combination of a plurality of images subjected to visual encryption pattern processing corresponding to letters or numbers on the virtual keypad layer; and a display part which continuously displays the plurality of images so that the virtual keypad layer is displayed and visually recognized by a user. So, the security of input information can be improved.

Description

[0001] The present invention relates to a terminal for processing input information and a method of operating the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal for processing input information and an operation method thereof, and more particularly, to a terminal performing security processing of an input interface through a visual encryption pattern process and an operation method thereof.

A terminal can be divided into a mobile terminal (mobile / portable terminal) and a stationary terminal according to whether the terminal can be moved. The mobile terminal can be divided into a handheld terminal and a vehicle mount terminal according to whether the user can directly carry the mobile terminal.

Such a terminal has various functions, for example, in the form of a multimedia device having multiple functions such as photographing and photographing of a moving picture, reproduction of a music or video file, reception of a game and broadcasting, etc. .

In order to support and enhance the functionality of such terminals, it may be considered to improve the structural and / or software parts of the terminal.

Generally, in the case of a personal computer (PC), since the size of a monitor is relatively large and the performance of a central processing unit (CPU) is relatively high, a graphical user interface An input environment is provided.

In particular, when inputting character or numerical information in a graphical user interface environment, a virtual keypad can be displayed on the interface screen.

In addition, a virtual keypad interface environment is also required in portable terminals due to the appearance of a relatively large display unit such as a touch-based mobile phone without a keypad, an electronic book, a smart pad, a tablet PC, and a high performance CPU.

In a virtual keypad interface environment such as a mobile terminal, unlike an external input device such as a keyboard, it is possible to confirm which key is input in accordance with input coordinates on a GUI.

However, as the information input on the virtual keypad is diversified and personalized, security is required. In order to enhance the security, a processing method such as displaying personal information and the like inputted on the virtual key pad by '****' is used.

However, such methods are ineffective only by capturing the virtual keypad screen itself and confirming input coordinate information.

For example, when the virtual keypad displayed on the screen of the terminal is being output as a normal image, the virtual keypad screen is captured by another person, or the virtual keypad screen captured by hacking or the like is input on the screen There is a problem that the personal information requiring security is immediately exposed when it is leaked along with the coordinate information.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a terminal capable of improving security for input information and an operation method using the terminal.

According to another aspect of the present invention, there is provided a terminal for processing input information, the terminal comprising: a keypad layer generating unit for generating a virtual keypad layer for inputting an interface; A visual encryption pattern processing unit for generating a display combination of a plurality of images subjected to visual encryption pattern processing corresponding to letters or numbers on the virtual keypad layer; And a display unit for continuously displaying the plurality of images so that the virtual keypad layer is displayed and visually recognized by the user.

According to another aspect of the present invention, there is provided a method of processing financial information using a terminal, the method comprising the steps of: Creating a pad layer; Generating a display combination of a plurality of images subjected to visual encryption pattern processing corresponding to letters or numbers on the virtual keypad layer; And continuously displaying the plurality of images such that the virtual keypad layer is displayed and visually recognized by the user.

The method according to an embodiment of the present invention can be implemented as a recording medium on which a program for executing in a computer is recorded.

According to an embodiment of the present invention, there is provided a virtual keypad layer for processing input information of a terminal, wherein a display combination of a plurality of images subjected to a time encryption pattern process corresponding to characters or numbers of the keypad layer And the display combination is continuously displayed to control the virtual keypad layer to be visually recognized.

Accordingly, the terminal displays the keypad layer visually recognizable by the user, but can capture only a part of the frame, and can encrypt the keypad layer according to the visual pattern so that it can not know what the entire keypad layer is have.

According to an embodiment of the present invention, the security of the terminal input information can be greatly improved by encrypting the coordinate information input from the user corresponding to the visually recognizable keypad layer.

1 illustrates a visual encryption pattern process according to an embodiment of the present invention.
2 is a block diagram illustrating a terminal according to an embodiment of the present invention.
3 is a flowchart illustrating an operation of a terminal according to an embodiment of the present invention.
FIGS. 4 to 9 are views for explaining the visual encryption pattern processing according to the embodiment of the present invention.

Hereinafter, a terminal related to the present invention will be described in detail with reference to the drawings. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role.

The terminal described in this specification may include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), navigation, . However, it will be understood by those skilled in the art that the configuration according to the embodiments described herein may be applied to a fixed terminal such as a digital TV, a desktop computer, and the like, unless the configuration is applicable only to a mobile terminal.

1 illustrates a visual encryption pattern process according to an embodiment of the present invention.

Referring to FIG. 1, the terminal 100 may display an input interface for receiving input information of a user. The interface display screen may display a virtual keypad layer 150 having a time encryption pattern processed according to an embodiment of the present invention. The virtual keypad layer 150 may be configured in the form of a graphical user interface (GUI) that is displayed in software, and soft buttons corresponding to a plurality of characters or numbers for key input may be included. The virtual keypad can be displayed while a character input application is running.

The terminal 100 may generate a display combination of a plurality of images corresponding to letters or numbers on the virtual keypad layer 150 for processing the visual encryption pattern. As shown in FIG. 1, the display combination of a plurality of images is a display combination of a user's eyes and a brain in the case where share images S1, S2, ..., SN for respective characters or numbers are visually overlapped. As shown in FIG. In this regard, various methods can be used as an encryption processing method in which each image share is overlapped and recognized by the user. For example, the visual encryption method disclosed in EUROCRYPT 94 by Naor and Shamir can be applied.

However, in order to implement a superimposed image, a plurality of displays must be configured to be overlapped with each other, or a hologram must be formed.

Accordingly, in order to solve such a problem, the present invention can continuously display the plurality of share images so that the virtual keypad layer is displayed through the terminal 100 and visually recognized by the user. Visually perceivable may include cases where the afterimage of the shared image is perceived through the human eye and brain. The afterimage may include a physical afterimage of the display and a cognitive afterimage of the visual. Accordingly, the virtual keypad display using the terminal 100 and the corresponding user input can be performed without adding any other physical component.

To this end, according to an embodiment of the present invention, the display combination is displayed alternately with the first shared image and the first shared image, which are time-encrypted pattern-processed in correspondence with one or more characters or numbers on the virtual keypad layer And a second share image that allows the one or more letters or numbers to be visually recognized.

In accordance with such a configuration, the terminal 100 can display the virtual image of the virtual keypad 150 (150) according to the continuous display of the display combination including the first share image remaining on the after-image of the display or the after- ) Can be visually recognized.

The time interval between the plurality of shared images to be displayed may have a time interval for causing the display unit to generate a visual afterimage effect so that letters or numbers on the virtual keypad layer are recognized by the user. For example, when the terminal 100 includes a liquid crystal display, the time interval may be determined according to the response speed of the liquid crystal display. Also, the time interval may be determined based on the display frequency. In addition, the terminal 100 may set a time interval according to a default setting corresponding to user setting or terminal identification information.

Next, a structure of a terminal according to an embodiment of the present invention for processing the visual cryptographic pattern as described above will be described with reference to FIG.

2 is a block diagram illustrating a terminal according to an embodiment of the present invention.

2, the terminal 100 includes an antenna 101, a communication module 103, a key operation unit 105, a touch pad 109, a display unit 111, a memory 113, an input program 110, And a control unit 115 installed in the apparatus. 1 are not essential, a terminal may be implemented having fewer or fewer general components than the other power supply, sensing unit, voice output unit, and the like.

The communication module 103 may include one or more modules that enable wireless communication between the terminal 100 and the wireless communication system or between the terminal 100 and the network in which the terminal 100 is located. The communication module 103 may include a modem for encoding and modulating the transmitted signal, demodulating and decoding the signal received through the antenna 101, and an RF front end for processing the RF signal.

The key operation unit 105 selectively includes a key for controlling the operation of the terminal 100 according to whether the touch pad 109 is provided. If information is inputted through the touch pad 109, the key operation unit 105 may be configured with only a minimum function key for power on / off. Hereinafter, the key operation unit 105 and the touch pad 109 will be collectively referred to as an input unit. For example, the input unit may include a key pad dome switch, a touch pad (static / static), a jog wheel, a jog switch, and the like.

The control unit 115 typically controls the overall operation of the terminal 100. For example, voice communications, data communications, video calls, financial transactions, and the like. The control unit 115 may be provided with a card reader module for information processing of a financial card. The card reader module may be implemented in the control unit 115 or may be implemented separately from the control unit 115. [

The control unit 115 includes an input information processing unit 115a, an interface unit 115b, a keypad layer generating unit 115c, An encryption pattern processing unit 115d, an input information encryption unit 115f, and a time interval setting unit 115g.

The input information processing unit 115a receives and processes the coordinate information input on the virtual keypad layer that has been subjected to the time encryption pattern processing through the input unit. Here, the coordinate information can be encrypted through the input information encryption unit 115g, and the encrypted coordinate information can be transmitted to the external server through the communication module 103. [

In addition, when the virtual keypad layers are generated in a random arrangement, the input information processing unit 115a can identify the key input by comparing the arrangement information corresponding to the random virtual keypad layer with the coordinate information.

According to the operation of the input information processing unit 115a, the control unit 115 can identify the key input on the keypad layer, process the identified key input, and perform the function operation of the terminal 100 have. For example, the terminal 100 can perform a function process according to various input information such as keyword search, ID input, password input, etc. by identifying the input key.

The input information input through the input information processing unit 115a may include financial information. In this case, the control unit 115 receives personal information such as account information, a mobile phone number, a PIN number, and an authentication number through inputting to the virtual key pad subjected to the time encryption processing, and performs a service according to a conventional financial settlement method .

The processing result performed through the input information processing unit 115a may be output through the display unit 111. [

The interface unit 115b includes a USB connection terminal, a microphone connection terminal, or an earphone connection terminal that can transmit and receive data to / from an external device through a connection port.

The interface unit 115b includes an analog-to-digital converter for converting an analog signal received through a microphone connection terminal into a digital signal, a digital-to-analog converter for converting a digital signal into an analog signal, Analog converter (Digital-Analog Converter).

Meanwhile, the keypad layer generating unit 115c generates a virtual keypad layer according to an embodiment of the present invention.

The keypad layer generating unit 115c may generate a virtual keypad layer including a plurality of character, number, or symbol soft buttons configured for key input. The generated keypad layer can be subjected to the time encryption pattern processing by the time encryption pattern processing unit 115d.

In addition, the keypad layer generating unit 115c may generate the keypad layer randomly configured according to the layout information of the keypad layer configured to randomly input the password of the financial information. To this end, the keypad layer generating unit 115c may receive the disposable placement information from the communication module 103. [ Accordingly, the keypad layer generating unit 115c may generate keypad layers for inputting the passwords differently each time the keys are input.

In addition, the keypad layer generating unit 115c may obtain the layout information by decoding the layout information encrypted with the first encryption key. The first encryption key may be a random number generated through a general random number generator or the like, but may be a public key paired with a private key generated using a public key algorithm. For example, the first encryption key may generate a first encryption key (Public key) and a private key using a Rivest, Shamir and Adleman (RSA) public key algorithm.

Then, the time encryption pattern processing unit 115d performs time encryption pattern processing on the keypad layer. For the visual encryption pattern processing, the graphic operation unit 120 and the layer division unit 115e can be further used.

The graphic computing unit 120 may perform all or part of the functions of the time encryption pattern processing unit 115d and the layer dividing unit 115e, which will be described later. The graphic operation unit 120 may be a graphic processing unit (GPU) used for assisting a graphic processing operation of the control unit 115, and may be integrally formed with the control unit 115 or may be configured independently.

When all or a part of the functions of the time encryption pattern processing unit 115d and the layer partitioning unit 115e are performed through the graphic operation unit 120, even if the main processor 115 is hacked, The algorithm for generating the data is advantageous in that it can be protected.

The visual encryption pattern processing unit 115d can generate a display combination of a plurality of share images corresponding to the letters or numbers of the generated keypad layer. Each share image may include at least one letter or number included in the keypad layer.

In addition, when the display combination corresponding to a specific character or number is output, the visual encryption pattern processing unit 115d may reconfigure other display combinations corresponding to the same letters or numbers to be output thereafter.

More specifically, the visual encryption pattern processing unit 115d generates a display combination of a first plurality of share images randomly configured corresponding to a first character or a first number of the keypad layer, and displays the first plurality The display combination of the second plurality of share images for outputting a corresponding display combination of the share images of the first image or the second image again corresponding to the first character or the first number. Accordingly, the display combination of the first plurality of frames and the display combination of the second plurality of frames are different from each other, and when displayed through the display unit, the first character or the first So that the security can be further improved.

For the case where the layer division is performed in the terminal 100, the terminal 100 may selectively include the layer division unit 115e.

The layer dividing unit 115e may divide the keypad layer into predetermined areas. The layer division unit 115e may divide the keypad layer into character regions corresponding to respective characters or numbers, and accordingly, the time encryption pattern processing unit 115d divides the divided regions into a predetermined sequence Or a random display combination of a plurality of share images can be constituted.

Accordingly, the input information processing unit 115a can control the display unit 111 to display a keypad input layer for inputting characters or numbers based on the plurality of shared images.

The display unit 111 displays (outputs) information to be processed by the terminal 100. For example, when the terminal is in a key input mode, a UI (User Interface) or a GUI (Graphic User Interface) including a virtual key pad layer processed with a visual encryption pattern related to key input is displayed. Also, when the terminal 100 is in the financial transaction mode, the UI for the financial transaction and the virtual key pad layer of the GUI can be processed by visual encryption pattern processing.

The display unit 111 may be a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), a flexible display And a 3D display. The keypad layer having the time encryption pattern processed according to a predetermined display period or frequency can be repeatedly displayed.

Here, the time interval setting unit 115g may control a time interval that is periodically displayed between a plurality of share images of the display unit 111. [ The time interval may have a time interval for causing the display unit 111 to generate a physical afterimage effect or to cause a visual afterimage effect to the user so that the letters or numbers are recognized by the user.

Accordingly, when the physical characteristics of the display unit 111 are different, the time interval setting may be changed. As described above, when the display unit 111 includes a liquid crystal display, the time interval can be determined according to the response speed of the liquid crystal display, and when the display unit 111 includes a display for displaying at a certain frequency, The time interval may be determined based on the certain frequency.

The time interval setting unit 115g may set the time interval between the share images according to the setting of the terminal 100 regardless of the physical characteristics of the display unit 111 or the output frequency.

For example, the time interval setting unit 115g may set a time interval between share images according to the type, identification number, or preset value set for each manufacturer of each terminal 100.

In this way, the keypad layer is constructed, the time encryption pattern is processed and displayed continuously on the screen of the display unit 111, so that the visually recognized keypad layer can be output only to the user. Accordingly, it is impossible to know the entire characters and numbers of the keypad layer as a temporary captured image or a photograph, and it is impossible to know the shape, type and arrangement information of the keypad layer. Therefore, even if the hacker obtains the coordinate information, It can not be determined whether it has been done.

In addition, the layout information of the keypad layer can be varied according to the encryption scheme that varies in real time, so that the form or configuration of the keypad layer can not be known until the decryption of the layout information according to the encryption is performed. The input information input to the keypad layer can be protected in multiple layers.

In addition, the input information encryption unit 115f can acquire and encrypt positional information (coordinate information) input through the input unit with respect to the keypad layer in financial transactions or the like. The encrypted location information may be transmitted to an external device via the interface unit 115b or may be transmitted to the server through the communication module 103. [ For example, the input information encryption unit 115f encrypts the location information based on the second encryption key received from the external device via the interface unit 115b or received from the security server on the network, To the external device or the security server.

The memory 113 may store a program for the operation of the controller 115 and temporarily store input / output data (for example, coordinate information, layout information, visual encryption pattern processed image, etc.) have.

The memory 113 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (e.g., SD or XD memory), a RAM (Random Access Memory), SRAM (Static Random Access Memory), ROM (Read Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM A disk, and / or an optical disk.

Embodiments of the terminal 100 thus described may be implemented using, for example, software, hardware, or a combination thereof.

According to a hardware implementation, the embodiments described herein may be implemented as application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays May be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and other electronic units for performing other functions. In some cases, May be implemented by the control unit 115. [

According to a software implementation, embodiments such as procedures or functions may be implemented with separate software modules that perform at least one function or operation. The software code may be implemented by a software application written in a suitable programming language. The software codes are stored in the memory 113 and can be executed by the control unit 115. [

FIG. 3 is a flowchart illustrating an operation of a terminal according to an embodiment of the present invention, and FIGS. 4 to 9 are views for explaining processing of a time encryption pattern according to an embodiment of the present invention.

Referring to FIG. 3, a terminal 100 according to an embodiment of the present invention configures a virtual keypad layer for key input (S101).

The keypad layer generating unit 115c may configure a virtual keypad layer when a key input program is executed. For example, when the security key input program is executed by the operation of the financial transaction application, the keypad layer generating unit 115c may configure a keypad layer for security key input corresponding to the financial information.

The keypad layer generating unit 115c may store the layout information corresponding to the keypad layer. The layout information may be received from an external device or generated each time a keypad layer is generated and stored in the memory 113. [

Then, the terminal 100 generates a display combination of a plurality of share images corresponding to letters or numbers of the virtual keypad input layer (S103), and performs a time encryption pattern process.

The visual encryption pattern processing unit 115d can perform a visual encryption pattern process for generating a display combination of a plurality of share images corresponding to characters or numbers of the keypad layer.

Then, the terminal 100 continuously displays the keypad layer at a predetermined time interval so that the keypad layer is visually recognized (S105).

The control unit 115 may control the display unit 111 to display the plurality of frames according to a predetermined time interval so that the keypad layer is displayed and visually recognized by the user.

As described above, the time interval periodically displayed between the plurality of frames may have a time interval for causing the display unit to generate a visual afterimage effect so that each letter or number is recognized by the user. And may vary depending on physical characteristics. The time interval may be set in advance by the time interval setting unit 115g.

The time encryption pattern processing unit 115d may reconfigure and output the display combination of the frame including the first plurality of share images randomly configured corresponding to the first character or the first number of the keypad layer at every cycle Accordingly, even if a display combination corresponding to the same letter or number is used, the keypad layer can be displayed according to different afterimage effects.

When the coordinate information corresponding to the keypad layer is input through the input unit, the terminal 100 performs a key input process based on the arrangement information of the keypad layer and the input coordinate information (S107).

The input information processing unit 115a may compare the layout information of the keypad layer stored or generated in advance with the input coordinate information, identify the input key, and perform character or numeric input processing corresponding to the identified key .

Accordingly, the inputted letters or numbers can be subjected to the time encryption pattern processing again through the time encryption pattern processing unit 115d and displayed through the display unit 111. [

Hereinafter, the visual encryption pattern processing according to the embodiment of the present invention, which is processed by the above-described method, will be described in more detail with reference to FIG. 4 to FIG.

The time encryption pattern processing through the terminal 100 according to the embodiment of the present invention divides the virtual keypad layer for key input into a plurality of areas corresponding to each letter or number according to a predetermined criterion, And a process of configuring the keypad layer divided into areas into a plurality of frames that are continuously displayed according to a predetermined period. And each of the plurality of frames may include respective share images in which a specific character or number is visually recognized by a residual image.

As shown in FIG. 4, the terminal 100 according to an embodiment of the present invention can perform time visualization pattern processing on the keypad layer 150 according to execution of a key input program for inputting login information. 4A shows a keypad layer 150 that is visually recognized by a user and FIG. 4B shows a share image of the keypad layer 150 when the user instantly captures the keypad layer 150. FIG. . As shown in FIG. 4, the key pad layer 150, which is displayed when a user inputs login information, is time-encrypted and can not be grasped at all by capturing a specific moment or only a partial capture screen. When a share image is continuously displayed in accordance with a predetermined time interval, the virtual key pad can be recognized only through the user's eyes and the brain.

4, when the key input is identified, the input information processing unit 115a processes the input character 151 again through the time encryption pattern processing unit 115c to perform the time encryption pattern processing and displays it on the display unit 111. [ As shown in FIG. Accordingly, as shown in FIG. 4 (A), the input character 151 can be generated as a frame including the share image and displayed continuously. The input key is recognized by the user as a physical or visual afterimage, but can not be seen on a screen captured as shown in FIG. 4 (B).

This can also be applied to the keypad layer 150 for inputting the password corresponding to the financial information for the financial transaction as shown in FIG.

5, the keypad layer 150 may be generated corresponding to a predetermined area corresponding to a letter or number of the keypad layer 150, and may display each generated area continuously to the user And may configure display combinations that include a plurality of share images for visually recognizing.

Accordingly, the user can visually recognize the keypad layer 150 for inputting the password as shown in FIG. 5 (A), but can not grasp what number is displayed on the captured screen in FIG. 5 (B).

6 and 7, the time encryption pattern processing of the terminal 100 according to the embodiment of the present invention will be described by taking as an example a method of configuring the keypad layer 150 for inputting such a password.

As shown in FIG. 6, a plurality of display combinations including SHARE images may include a first display combination and a second display combination, and SHARE images included in each display combination may be used to represent one or more letters or numbers . To this end, each display combination may comprise display frames comprising one or more share images arranged in a time series in accordance with a predetermined time interval.

Each display frame includes at least a portion of the dummy pixel and the keypad layer 150, and when displayed consecutively, the display frames are continuously displayed in a specific time interval such that each character or number is visually recognized by the user, Lt; / RTI >

Such a periodically displayed time interval between the plurality of frames may have a time interval for causing the display unit to generate a visual or physical afterimage effect so that each character or number is visually recognized by the user.

As described above, the time interval may vary depending on the characteristics of the display unit of the terminal 100, for the afterimage effect depending on the physical characteristics. For example, when the display section includes a liquid crystal display, the time interval may be determined according to the response speed of the liquid crystal display, and when the display section includes a display for displaying at a certain frequency, Can be determined. The time interval may be set by the time interval setting unit 115g.

On the other hand, the terminal 100 can generate a display combination of a plurality of frames different from each other for each of the same letters or numbers and continuously output them.

For example, if a first display combination representing the number 5 is generated and the corresponding first frames are output in series, then the terminal 100 then generates a second display combination (e.g., And sequentially output the second frames corresponding thereto.

Accordingly, the display combination of the first plurality of frames and the display combination of the second plurality of frames are different from each other, and when displayed through the display, the same number 5 can be represented according to each different afterimage effect have.

Even with the same character or number, the display combination can be repeatedly reconfigured for each display by such a reconfiguration method, so that it is not possible to easily reconfigure even continuous capturing or the like, thereby improving the security effect.

7, the terminal 100 may divide a keypad layer for inputting a password into a predetermined random area to generate each display combination, Each display combination may also be generated by one or more number areas corresponding to the numbers.

7, the display combination has a first area 150A corresponding to the areas 5, 4, 0 and 9, a second area 150B corresponding to the areas 1, 7 and 3, And a third area 150C corresponding to the area. Each number area can be randomly determined each time a keypad layer is created, and each display combination can include a partition area overlapping each other.

In addition, the keypad layer divided for each area may be composed of a frame including a plurality of share images continuously displayed according to the display combination. 3, a first frame 160A corresponding to the first area 150A, a second frame 160B corresponding to the second area 150B, and a third frame 160B corresponding to the third area 150C, 160C are continuously displayed. In one embodiment, the output order of the display combination and the output order of each frame may be determined according to a predetermined sequence or may be randomly determined.

For example, the terminal 100 may sequentially display the plurality of frames by configuring the divided areas in a sequential display combination of a plurality of frames according to a predetermined order and a time interval. In addition, the terminal 100 may display the divided areas in a random order in succession at a predetermined time interval by constructing a random display combination of a plurality of frames.

When the continuous display of each frame is performed at a sufficiently high speed to cause the afterimage effect according to the characteristics of the display portion, the terminal 100 according to the embodiment of the present invention displays the keypad layer for visually recognizable password input . Here, each frame can be continuously displayed at a constant speed according to a predetermined time interval, and preferably, a minimum time that can cause a residual image effect corresponding to a display frequency of 60 Hz can be exemplified as 1/60 second.

Accordingly, the user can recognize that the frames are displayed substantially simultaneously according to the effect of the physical afterimage of the display unit and the effect of the visual image of the human body. Accordingly, the user can input the password in the same manner as in inputting the password in the conventional password input screen can do. However, when a password input screen is shot by a hacking application that captures a screen, a camera, or the like, only one of the first frame 160A, the second frame 160B, or the third frame 160C is captured, Accordingly, a hacking attempt at the level of intercepting the coordinate information input on the screen can be disabled.

Accordingly, the terminal 100 can securely process the position information corresponding to the input password on the screen. In particular, in one embodiment, the terminal 100 may receive placement information for randomly configuring a keypad layer for inputting a password. In this case, the terminal 100 may receive the placement information A layer is created, and a visual encryption pattern process as described above is performed on the keypad layer to display it. In addition, the terminal 100 can convert and encrypt the location information of the password input on the keypad layer and transmit the encrypted location information to an external device or a server, thereby enabling secure security of multiple layers without complicated encryption process.

On the other hand, the terminal 100 can form a divided area deeply in the time encryption pattern processing and add dummy pixels.

Fig. 8 shows that four divided areas corresponding to the respective number areas are determined, and a plurality of frames for each number are configured according to the respective divided areas. As shown in FIG. 8, each number area can be divided into four divided areas and divided into four divided areas, and a plurality of frames that are continuously displayed based on the divided areas can be configured.

As shown in FIG. 8, for example, the terminal 100 sequentially displays four frames 161A, 161B, 161C, and 161D including the divided regions into four divided regions, Can be displayed. The terminal 100 may be configured to output a dummy pixel to be added to the middle of each frame or each frame, so that it is more difficult to predict which number each frame represents.

Accordingly, although the user can visually recognize the number 5, only the combination of the divided image and the dummy pixel is displayed in the case of capturing the screen, so that it is known that the visual cryptographic process of unknown number is performed have.

In addition, as shown in FIG. 9, the terminal 100 can configure the dummy pixels and the divided regions randomly for each pixel in constructing the divided regions in depth.

FIG. 9 shows dummy pixels corresponding to the number 3 area and the divided areas randomly arranged on a pixel-by-pixel basis. As shown in FIG. 9, the terminal 100 constructs a plurality of frames that are randomly divided in pixel units, and can continuously display them. In such a configuration, the terminal 100 can divide the area by determining the appropriate depth and randomization degree for each number area, and can construct a consecutive frame based on it to display each visually recognizable letter or number have.

Such a visual encryption pattern processing unit may constitute a frame including a plurality of share images so as to selectively include one or more regions divided by the pixel. Accordingly, as shown in FIG. 9, the pixel partitions, which are randomly included in each share image, may overlap each other among the frames. Accordingly, the terminal 100 can configure a keypad layer that is more complicated and difficult to decrypt according to the setting, thereby reducing the possibility of hacking.

The method according to the present invention may be implemented as a program for execution on a computer and stored in a computer-readable recording medium. Examples of the computer-readable recording medium include a ROM, a RAM, a CD- , A floppy disk, an optical data storage device, and the like, and may also be implemented in the form of a carrier wave (for example, transmission over the Internet).

The computer readable recording medium may be distributed over a networked computer system so that computer readable code can be stored and executed in a distributed manner. And, functional programs, codes and code segments for implementing the above method can be easily inferred by programmers of the technical field to which the present invention belongs.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the present invention.

100: terminal
101: Antenna
103: Communication module
105:
109: Touchpad
111:
113: Memory
115:
120:

Claims (15)

A terminal for processing input information,
A keypad layer generation unit for generating a keypad layer for interface input;
A visual encryption pattern processing unit for generating a display combination of a plurality of images subjected to visual encryption pattern processing corresponding to letters or numbers on the keypad layer; And
And a display unit for continuously displaying the plurality of images so that the keypad layer is displayed and visually recognized by a user,
The plurality of share images generated by processing the key pad layer by the time encryption pattern are alternately displayed at a predetermined time interval, so that a physical afterimage effect or a visual effect such that each letter or number of the keypad layer is recognized by the user A terminal that generates a residual image effect. The method according to claim 1,
Wherein the display combination comprises a first shared image that is time encrypted and patterned corresponding to one or more letters or numbers on the keypad layer and a second shared image that is alternately displayed with the first shared image so that the one or more letters or numbers are visually recognized The second shared image comprising a first shared image and a second shared image. The method according to claim 1,
Wherein the time interval between the plurality of displayed images has a time interval for causing the display unit to generate a visual afterimage effect so that letters or numbers on the keypad layer are recognized by the user. The method of claim 3,
Wherein the display unit includes a liquid crystal display,
Wherein the time interval is determined according to a response speed of the liquid crystal display. The method of claim 3,
Wherein the display unit includes a display for displaying at a predetermined frequency,
Wherein the time interval is determined based on the predetermined frequency. The method of claim 3,
And a time interval setting unit for setting the time interval. The method according to claim 1,
An input unit for receiving coordinate information input on the keypad layer; And
Further comprising: an encryption unit for encrypting the coordinate information. A method of operating a terminal for processing input information,
Creating a keypad layer for interface input;
Generating a display combination of a plurality of images subjected to visual encryption pattern processing corresponding to letters or numbers on the keypad layer; And
And continuously displaying the plurality of images such that the keypad layer is displayed and visually recognized by the user,
The plurality of share images generated by processing the key pad layer by the time encryption pattern are alternately displayed at a predetermined time interval, so that a physical afterimage effect or a visual effect such that each letter or number of the keypad layer is recognized by the user And generating a residual image effect. 9. The method of claim 8,
Wherein the display combination comprises a first shared image that is time encrypted and patterned corresponding to one or more letters or numbers on the keypad layer and a second shared image that is alternately displayed with the first shared image so that the one or more letters or numbers are visually recognized And a second share image to be transmitted to the terminal. 9. The method of claim 8,
Wherein the time interval between the plurality of images to be displayed has a time interval for causing a display to generate a visual afterimage effect so that letters or numbers on the keypad layer are recognized by the user. 11. The method of claim 10,
Wherein the time interval is determined according to a response speed of the liquid crystal display of the display unit. 11. The method of claim 10,
Wherein the time interval is determined based on an output frequency of the display unit. 11. The method of claim 10,
And setting the time interval. 9. The method of claim 8,
Receiving coordinate information input on the keypad layer; And
And encrypting the coordinate information. A computer-readable non-transitory medium having recorded thereon a program for causing a computer to execute the method of any one of claims 8 to 14.

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