KR20130040366A - Mobile terminal which can be input a password based on graphic interface and method for unlocking a mobile terminal based on graphic interface - Google Patents

Abstract

PURPOSE: A mobile terminal inputting a password by using a graphic interface and a method for inputting a password by using the graphic interface are provided to supply an intuitive and entertaining password input method by supplying a visual password input method. CONSTITUTION: A display unit(151) outputs an object to which a visually distinguished graphic element is allocated on a screen and a memory(160) stores password information. A control unit(180) controls the output of the display unit to randomly determine an output position of the object or the graphic element. The control unit generates a password input signal based on external input for selecting the object. The control unit compares the password input signal with the password information to determine unlocking. The graphic element is one or more of colors, pictures, figures, and photos. [Reference numerals] (110) Wireless communication unit; (111) Broadcasting reception module; (112) Mobile communication module; (113) Wireless Internet module; (114) Local area communication module; (115) Location information module; (120) A/V input unit; (121) Camera; (122) Microphone; (130) User input unit; (140) Sensing unit; (141) Proximity sensor; (150) Output unit; (151) Display unit; (152) Sound output module; (153) Alarm unit; (160) Memory; (170) Interface unit; (180) Control unit; (181) Multimedia module; (190) Power supplying unit;

Description

MOBILE TERMINAL WHICH CAN BE INPUT A PASSWORD BASED ON GRAPHIC INTERFACE AND METHOD FOR UNLOCKING A MOBILE TERMINAL BASED ON GRAPHIC INTERFACE}

The present invention relates to a mobile terminal having a password input method using a graphic interface and a password input method using a graphic interface.

Terminals may be divided into mobile / portable terminals and stationary terminals according to their mobility. The mobile terminal may be further classified into a handheld terminal and a vehicle mount terminal according to whether a user can directly carry it.

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. .

As a terminal develops into an all-in-one device type, a user stores and uses personal information such as an ID, a password, and a public certificate in the terminal. Accordingly, in recent years, a mobile terminal such as a smart phone has emerged as a big problem for security setting for protecting personal information, and research and development related thereto are actively progressing.

In general, a portable terminal primarily sets a security function by using a screen lock function. If the user loses the mobile phone and fails to unlock the lock screen of the mobile device, the user cannot activate each function of the mobile device or view the contents stored in the mobile device. Therefore, personal information such as an address book or personal ID stored in the mobile device cannot be accessed. It can be safe.

1A is a method for releasing a lock screen of a portable terminal according to the related art, and a user maintains security of the portable terminal by using a method of inputting a preset password. In the case of a touch input type mobile terminal, the locked state of the mobile terminal is released by using the touched keypads one by one using a pointer.

However, since the password-type unlocking method is widely used not only in mobile terminals but also in banking, doors, safes, locks, etc., there is a high possibility of secondary damage when the password is leaked, and there is a high concern about the loss of the password.

To solve the problem of password-type unlocking method, Android OS provides a security pattern type unlocking method. FIG. 1B is a lock screen of a mobile terminal provided by the Android OS, and enables the lock screen to be released through pattern input using nine circles. In detail, the Android OS presets and stores a pattern of a combination of nine circles and four or more circles, and releases the lock screen when the same pattern is input from the outside. Provides a security method in the form of a pattern. In the pattern unlocking method, a pattern is formed by selecting a plurality of shapes while the pointer is in contact with the display, without using a discontinuous touch method of touching the figures arranged on the keypad one by one using the pointer. The mobile terminal is unlocked.

However, the unlocking method due to the security pattern has a problem that the pattern of the user's drawing is displayed on the screen, so that the security pattern can be easily recognized from the outside, and the protection of the window or optical film of the display. There is a problem that the trace of pointer movement remains on the film, so that the security pattern can be easily leaked.

The present invention is to provide a method for unlocking a mobile terminal different from the conventional method.

Another object of the present invention is to provide a mobile terminal having a method of unlocking a method different from the conventional method.

It is an object of the present invention to provide a method for unlocking a mobile terminal using a graphical interface.

Another object of the present invention is to provide a method of unlocking a mobile terminal by selecting an object to which a graphic element is assigned, thereby providing a unlocking method having a visual effect away from the text input password input method. There is this.

In addition, the present invention has another object to provide a unlocking method having a visual effect, to prevent the risk of secondary accidents caused by the leakage of the password by escaping from the password input method of the existing numeric input method.

In addition, the present invention has another object to remove the security risk due to the pattern leakage, unlike the existing pattern input method by changing the graphic element output to the display from time to time.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, unless further departing from the spirit and scope of the invention as defined by the appended claims. It will be possible.

A mobile terminal for releasing locks using colors related to another embodiment of the present invention for realizing the above object includes a display unit for outputting an object to which a graphic element that can be visually distinguished is assigned on a screen; A memory for storing cryptographic information; And controlling the output of the display unit to randomly determine the graphic element of the object or the output position of the object, generate a cryptographic input signal based on an external input, and lock the cryptographic input signal by comparing the cryptographic information. It includes a control unit for determining whether to release.

By randomly determining the position of the graphic element of the object or the object, the user selects a different position each time, or input a password in a pattern of a different shape every time, so that the input pattern prevents the leakage of passwords due to leakage, It can effectively maintain security.

The unlocking method of the mobile terminal using the color associated with an embodiment of the present invention for realizing the above object,

Storing cryptographic information in a memory to maintain security of the mobile terminal; Randomly outputting a graphic element assigned to an object or a position of the object when the display unit is operated; And generating an encryption input signal based on an external input, and comparing the encryption input signal with the information to determine whether to unlock the terminal.

The mobile terminal according to at least one embodiment of the present invention configured as described above provides a cryptographic input method having a visual effect, away from the text-based password input method, thereby providing an intuitive and entertaining password input method. Can provide.

Furthermore, unlike the number input method, it is possible to prevent the secondary damage caused by the leakage of the password.

In addition, unlike the pattern input method, the mobile terminal can be unlocked by inputting a different pattern every time, thereby preventing the possibility of the password leakage having a pointer trace remaining in advance.

 The effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the following description will be.

1A and 1B are exemplary diagrams for describing a method for releasing a lock of a mobile terminal according to the related art.
2 is a block diagram of a mobile terminal according to an embodiment of the present invention.
3 is a front perspective view of a mobile terminal according to an embodiment of the present invention;
4 is a front view of a mobile terminal for explaining an operation state of the mobile terminal according to the present invention;
5A and 5B are exemplary diagrams of a screen provided to a user for setting password information or entering a password.
6A and 6B are exemplary views for explaining that graphic elements assigned to each object are randomly determined.
7A and 7B are exemplary views for explaining effectively arranging an object on a display unit.
8 is an exemplary diagram for explaining extension of a touch sensing area of a figure object;
9 is a flowchart illustrating a method of releasing a lock screen using a graphic interface according to an embodiment of the present invention.

Hereinafter, a mobile 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 mobile terminal described herein includes a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a tablet (tablet PC), navigation, and the like. This may be included. However, it will be readily apparent to those skilled in the art that the configuration according to the embodiments described herein may be applied to fixed terminals such as digital TV desktop computers as well as mobile terminals.

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

The mobile terminal 100 includes a wireless communication unit 110, an audio / video input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, A controller 170, a controller 180, a power supply 190, and the like. The components shown in FIG. 2 are not essential, and a mobile terminal having more or fewer components may be implemented.

Hereinafter, the components will be described in order.

The wireless communication unit 110 may include one or more modules for enabling wireless communication between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and the network in which the mobile terminal 100 is located. For example, the wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short range communication module 114, and a location information module 115 .

The broadcast receiving module 111 receives a broadcast signal and / or broadcast related information from an external broadcast management server through a broadcast channel.

The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may refer to a server for generating and transmitting broadcast signals and / or broadcast related information, or a server for receiving broadcast signals and / or broadcast related information generated by the broadcast management server and transmitting the generated broadcast signals and / or broadcast related information. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and a broadcast signal in which a data broadcast signal is combined with a TV broadcast signal or a radio broadcast signal.

The broadcast-related information may refer to a broadcast channel, a broadcast program, or information related to a broadcast service provider. The broadcast related information may also be provided through a mobile communication network. In this case, it may be received by the mobile communication module 112.

The broadcast related information may exist in various forms. For example, it may exist in the form of Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB) or Electronic Service Guide (ESG) of Digital Video Broadcast-Handheld (DVB-H).

For example, the broadcast receiving module 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S), a Media Forward Link Only And a Digital Broadcasting System (ISDB-T) (Integrated Services Digital Broadcast-Terrestrial). Of course, the broadcast receiving module 111 may be adapted to other broadcasting systems as well as the digital broadcasting system described above.

The broadcast signal and / or broadcast related information received through the broadcast receiving module 111 may be stored in the memory 160.

The mobile communication module 112 transmits and receives radio signals to at least one of a base station, an external terminal, and a server on a mobile communication network. The wireless signal may include various types of data depending on a voice call signal, a video call signal or a text / multimedia message transmission / reception.

The wireless Internet module 113 is a module for wireless Internet access, and may be built in or externally attached to the mobile terminal 100. Wireless Internet technologies may include Wireless LAN (Wi-Fi), Wireless Broadband (Wibro), World Interoperability for Microwave Access (Wimax), High Speed Downlink Packet Access (HSDPA), and the like.

The short range communication module 114 refers to a module for short range communication. Bluetooth, Radio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), ZigBee, and the like can be used as a short range communication technology.

The position information module 115 is a module for obtaining the position of the mobile terminal, and a representative example thereof is a Global Position System (GPS) module.

Referring to FIG. 2, an A / V (Audio / Video) input unit 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 122. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video call mode or the photographing mode. The processed image frame can be displayed on the display unit 151. [

The image frame processed by the camera 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. [ Two or more cameras 121 may be provided depending on the use environment.

The microphone 122 receives an external sound signal through a microphone in a communication mode, a recording mode, a voice recognition mode, or the like, and processes it as electrical voice data. The processed voice data can be converted into a form that can be transmitted to the mobile communication base station through the mobile communication module 112 when the voice data is in the call mode, and output. Various noise reduction algorithms may be implemented in the microphone 122 to remove noise generated in receiving an external sound signal.

The user input unit 130 generates input data for a user to control the operation of the terminal. The user input unit 130 may include a key pad dome switch, a touch pad (static pressure / capacitance), a jog wheel, a jog switch, and the like.

The sensing unit 140 senses the current state of the mobile terminal 100 such as the open / close state of the mobile terminal 100, the position of the mobile terminal 100, the presence or absence of user contact, the orientation of the mobile terminal, And generates a sensing signal for controlling the operation of the mobile terminal 100. For example, when the mobile terminal 100 is in the form of a slide phone, it may sense whether the slide phone is opened or closed. In addition, whether the power supply unit 190 is supplied with power, whether the interface unit 170 is coupled to the external device may be sensed. Meanwhile, the sensing unit 140 may include a proximity sensor 141.

The output unit 150 is used to generate an output related to visual, auditory or tactile senses, and may include a display unit 151, a sound output module 152, an alarm unit 153, and the like.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, when the mobile terminal is in the call mode, a UI (User Interface) or a GUI (Graphic User Interface) associated with a call is displayed. When the mobile terminal 100 is in the video communication mode or the photographing mode, the photographed and / or received video or UI and GUI are displayed.

The display unit 151 is a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), a flexible display (flexible) and at least one of a 3D display.

Some of these displays may be transparent or light transmissive so that they can be seen through. This can be referred to as a transparent display, and a typical example of the transparent display is TOLED (Transparent OLED) and the like. The rear structure of the display unit 151 may also be of a light transmission type. With this structure, the user can see an object located behind the terminal body through the area occupied by the display unit 151 of the terminal body.

There may be two or more display units 151 according to the embodiment of the mobile terminal 100. For example, in the mobile terminal 100, a plurality of display portions may be spaced apart from one another, or may be disposed integrally with one another, and may be disposed on different surfaces, respectively.

When the display unit 151 and a sensor for detecting a touch operation (hereinafter, referred to as a touch sensor) form a mutual layer structure (hereinafter referred to as a touch screen), the display unit 151 may be configured in addition to an output device. Can also be used as an input device. The touch sensor may have the form of, for example, a touch film, a touch sheet, a touch pad, or the like.

The touch sensor may be configured to convert a change in a pressure applied to a specific portion of the display unit 151 or a capacitance generated in a specific portion of the display unit 151 into an electrical input signal. The touch sensor can be configured to detect not only the position and area to be touched but also the pressure at the time of touch.

If there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller. The touch controller processes the signal (s) and transmits the corresponding data to the controller 180. As a result, the controller 180 can know which area of the display unit 151 is touched.

The proximity sensor 141 may be disposed in an inner region of the mobile terminal or in the vicinity of the touch screen, which is enclosed by the touch screen. The proximity sensor refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface or a nearby object without mechanical contact using the force of an electromagnetic field or infrared rays. The proximity sensor has a longer life span than the contact sensor and its utilization is also high.

Examples of the proximity sensor include a transmission photoelectric sensor, a direct reflection photoelectric sensor, a mirror reflection photoelectric sensor, a high frequency oscillation proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor. And to detect the proximity of the pointer by the change of the electric field along the proximity of the pointer when the touch screen is electrostatic. In this case, the touch screen (touch sensor) may be classified as a proximity sensor.

Hereinafter, for convenience of explanation, an act of allowing the pointer to be recognized without being in contact with the touch screen so that the pointer is located on the touch screen is referred to as a "proximity touch", and the touch The act of actually touching the pointer on the screen is called "contact touch." The position where the pointer is proximately touched on the touch screen means a position where the pointer is vertically corresponding to the touch screen when the pointer is touched.

The proximity sensor detects a proximity touch and a proximity touch pattern (for example, a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, and a proximity touch movement state). Information corresponding to the detected proximity touch operation and the proximity touch pattern may be output on the touch screen.

The sound output module 152 may output audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. The sound output module 152 also outputs sound signals related to functions (e.g., call signal reception sound, message reception sound, etc.) performed in the mobile terminal 100. [ The audio output module 152 may include a receiver, a speaker, a buzzer, and the like.

The alarm unit 153 outputs a signal for notifying the occurrence of an event of the mobile terminal 100. Examples of events that occur in the mobile terminal include call signal reception, message reception, key signal input, touch input, and the like. The alarm unit 153 may output a signal for notifying the occurrence of an event in a form other than the video signal or the audio signal, for example, vibration. The video signal or the audio signal may be output through the display unit 151 or the audio output module 152 so that they may be classified as a part of the alarm unit 153.

The memory 160 may store a program for processing and controlling the controller 180 and may temporarily store input / output data (for example, a phone book, a message, an audio, a still image, a video, etc.). It can also perform a function. The memory 160 may also store a frequency of use of each of the data (eg, a phone number, a message, and a frequency of use of each multimedia). In addition, the memory 160 may store data on vibration and sound of various patterns output when a touch input on the touch screen is performed.

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, 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. The mobile terminal 100 may operate in association with a web storage that performs a storage function of the memory 160 on the Internet.

The interface unit 170 serves as a path for communication with all external devices connected to the mobile terminal 100. The interface unit 170 receives data from an external device or supplies power to each component in the mobile terminal 100 or transmits data to the external device. For example, a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device having an identification module, an audio I / O port, A video input / output (I / O) port, an earphone port, and the like may be included in the interface unit 170.

The identification module is a chip for storing various information for authenticating the use right of the mobile terminal 100 and includes a user identification module (UIM), a subscriber identity module (SIM), a general user authentication module A Universal Subscriber Identity Module (USIM), and the like. Devices with identification modules (hereinafter referred to as "identification devices") can be manufactured in a smart card format. Accordingly, the identification device can be connected to the terminal 100 through the port.

The interface unit may be a passage through which power from the cradle is supplied to the mobile terminal 100 when the mobile terminal 100 is connected to an external cradle, or various command signals input from the cradle by a user may be transferred. It may be a passage that is delivered to the terminal. The various command signals or the power source input from the cradle may be operated as a signal for recognizing that the mobile terminal is correctly mounted on the cradle.

The controller 180 typically controls the overall operation of the mobile terminal. For example, voice communication, data communication, video communication, and the like. The control unit 180 may include a multimedia module 181 for multimedia playback. The multimedia module 181 may be implemented in the control unit 180 or may be implemented separately from the control unit 180. [

The controller 180 may perform a pattern recognition process for recognizing handwriting input or drawing input performed on the touch screen as characters and images, respectively.

The power supply unit 190 receives an external power source and an internal power source under the control of the controller 180 to supply power for operation of each component.

The various embodiments described herein may be embodied in a recording medium readable by a computer or similar device using, for example, software, hardware, or a combination thereof.

According to a hardware implementation, the embodiments described herein include application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), and the like. It may be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and electrical units for performing other functions. The described embodiments may be implemented by the controller 180 itself.

According to the software implementation, embodiments such as the procedures and functions described herein may be implemented as separate software modules. Each of the software modules may perform one or more of the functions and operations described herein. Software code can be implemented in a software application written in a suitable programming language. The software code is stored in the memory 160 and can be executed by the control unit 180. [

3 is a front perspective view of an example of a mobile terminal or a mobile terminal according to the present invention;

The disclosed mobile terminal 100 has a bar-shaped terminal body. However, the present invention is not limited thereto, and can be applied to various structures such as a slide type, a folder type, a swing type, and a swivel type in which two or more bodies are relatively movably coupled.

The body includes a case (a casing, a housing, a cover, and the like) which forms an appearance. In this embodiment, the case may be divided into a front case 101 and a rear case 102. [ A variety of electronic components are embedded in the space formed between the front case 101 and the rear case 102. At least one intermediate case may be additionally disposed between the front case 101 and the rear case 102. [

The cases may be formed by injecting synthetic resin or may be formed of a metal material, for example, a metal material such as stainless steel (STS) or titanium (Ti).

The display unit 151, the sound output unit 152, the camera 121, the user input units 130/131 and 132, the microphone 122, the interface 170, and the like may be disposed in the front body 101 have.

The display unit 151 occupies most of the main surface of the front case 101. A sound output unit 151 and a camera 121 are disposed in an area adjacent to one end of both ends of the display unit 151 and a user input unit 131 and a microphone 122 are disposed in an area adjacent to the other end. The user input unit 132 and the interface 170 may be disposed on the side surfaces of the front case 101 and the rear case 102. [

The user input unit 130 is operated to receive a command for controlling the operation of the portable terminal 100 and may include a plurality of operation units 131 and 132. The operation units 131 and 132 may be collectively referred to as a manipulating portion and may be employed in any manner as long as the user operates in a tactile manner.

The contents inputted by the first or second operation unit 131 or 132 may be variously set. For example, the first operation unit 131 receives commands such as start, end, scroll, and the like, and the second operation unit 132 controls the size of the sound output from the sound output unit 152 or the size of the sound output from the display unit 151 To the touch recognition mode of the touch screen.

Hereinafter, the operation of the display unit 151 and the touch pad 135 will be described with reference to FIG. 4.

4 is a front view of a portable terminal for explaining an operation state of the portable terminal according to the present invention.

Various types of time information can be displayed on the display unit 151. [ These pieces of information can be displayed in the form of letters, numbers, symbols, graphics, or icons.

At least one of the letters, numbers, symbols, graphics, or icons may be displayed in a predetermined arrangement for inputting such information, thereby being implemented as a keypad. Such a keypad may be referred to as a so-called " virtual keypad ".

4 illustrates receiving a touch applied to the virtual keypad through the front of the terminal body.

The display unit 151 may operate as an entire area or may be divided into a plurality of areas and operated. In the latter case, the plurality of areas can be configured to operate in association with each other.

For example, an output window 151a and an input window 151b are displayed on the upper and lower portions of the display unit 151, respectively. The output window 151a and the input window 151b are areas allocated for outputting or inputting information, respectively. In the input window 151b, a virtual keypad 151c is displayed in which a number for inputting a telephone number or the like is displayed. When the virtual keypad 151c is touched, numbers and the like corresponding to the touched virtual keypad are displayed on the output window 151a. When the first operation unit 131 is operated, call connection to the telephone number displayed on the output window 151a is attempted.

For convenience of description, it is assumed that the mobile terminal mentioned below includes at least one of the components shown in FIG. 2. In particular, the mobile terminal to which the present invention is applicable includes a display unit 151, a memory 160, and a controller 180.

In addition, hereinafter, a case in which the display unit of the mobile terminal is a touch screen will be described for an effective description of the present invention.

The display unit 151 outputs an object to which a graphic element that can be visually distinguished is allocated, on the screen. In addition, the display unit 151 may also serve as an input device capable of receiving a user input.

The graphic element may be a color, a picture, a figure, a picture, or a combination thereof.

5A and 5B are exemplary diagrams of screens provided to a user for setting password information or inputting a password.

In FIG. 5A, the screen is divided into tiles, and different colors are assigned to the tiles 211 through 216.

In this case, the capital letters shown in FIG. 5A are letters written for convenience of description, and each letter is used to refer to a specific color. For example, R is red, B is blue, G is green, P is purple, O is orange, and V is purple. In the case of FIG. 5A, each object 211 to 216 may be visually distinguished by assigning different colors. That is, in FIG. 5A, the graphic elements of color are assigned to the objects 211 to 216, so that the objects can be visually distinguished.

5B illustrates a screen in which a plurality of objects 221 to 226 having different shapes are arranged. Each of the objects 221 to 226 may be visually distinguished by implementing different shapes on the screen.

The memory 160 stores cryptographic information. When the user inputs a password, the controller 180 compares the password input signal and the password information to determine whether to unlock the mobile terminal.

In detail, by selecting one or more objects output on the display unit 151, a password may be generated or a password may be input. When generating a password, if one or more objects on the display unit 151 are selected through the pointer, the controller 180 stores the password information including the graphic elements included in the selected object to the memory 160. The controller 180 detects a touch position of the pointer on the display unit 151 and treats the graphic element of the object corresponding to the detected position as cryptographic information and stores it in the memory 160.

When the user sets a plurality of objects as ciphers, the selection order of graphic elements may be included in the cipher information and stored in the memory 160. In this case, the user can unlock the mobile terminal by inputting the password in the same order as the selection order of the graphic elements selected when the password is set.

The controller 180 may control the output of the display unit 151 to randomly determine the graphic element of the object or the output position of the object.

The display unit 151 enters a dormant state (power off state of the display unit 151) according to external operation or time elapses, thereby maintaining the efficiency of the power supply unit to the maximum. The display unit 151 in the dormant state is restarted by an external operation, and the controller 180 is a screen for inputting a password of the mobile terminal whenever the display unit 151 is driven (hereinafter referred to as a "lock screen"). ) Can be provided. In this case, the controller 180 may control the display unit 151 to randomly determine the position of the object to be output or the graphic element assigned to the object whenever the display unit 151 is driven.

6A and 6B are exemplary views for explaining that graphic elements assigned to each object are randomly determined. 6A illustrates an example of a lock screen provided to a user when the display unit operates out of a dormant state, and FIG. 6B illustrates an example of a lock screen provided to the user when the display unit operates out of a dormant state.

When the objects displayed on the screen are the first to tenth objects 231 to 240 in the order of up, down, left, and right, the first object 231 is assigned a red color (R), but the green color (G) is next time. The 10th object 240 has been allocated blue (B) at the first operation, but the green (G) can be confirmed next time. For example, when the encryption information is set in the order of green (G), red (R), orange (O), and blue (B), in the case of FIG. 6A, the second object 232, the eighth object 238, Selecting the fourth object 234 and the tenth object 240 in order to release the password, and in the case of FIG. 6B, the first object 231, the seventh object 237, the second object 232, and the second object. 9 objects 239 are selected in order to release the password, and the pattern for entering the password is changed each time.

As described above, whenever the display unit 151 wakes up from the dormant state and randomly determines the position of the graphic element or object assigned to each object, the user's password input position or password input pattern is changed every time. Accordingly, even if the trace of the pointer movement is left in the protective film such as a window or the optical film of the display, it is possible to prevent the trace back of the encryption caused by the trace of the pointer movement.

Further, the user may use a method of intermittently touching and selecting an object output on the display unit 151 (hereinafter referred to as a “discontinuous touch method”), or the user may move the pointer in contact with the pointer and the display unit 151. A password may be input by dragging to select a plurality of objects (hereinafter, referred to as a “continuous touch method”), and the controller 180 may generate a password input signal based on a user's input.

Intermittently touching the object is a method in which one object can be selected each time the pointer is newly contacted with the display unit 151. In the case of the discontinuous touch method, a plurality of objects can be selected by repeatedly performing the pointer contact with the display unit 151. The continuous touch method is a method of selecting a plurality of objects by dragging without removing the pointer on the display unit 151.

In the case of the discontinuous touch method, a password may be input regardless of the arrangement state of the objects on the display unit 151. In the case of using the discontinuous touch method, the mobile terminal may be unlocked by sequentially touching and selecting an object that matches the graphic element included in the preset encryption information.

However, in the case of the continuous touch method, a plurality of objects are selected by dragging the pointer while the pointer is in contact with the display unit 151, so that the objects are arranged so that other objects are not positioned on a straight path between the objects and the objects. There is a need. When there are at least three objects in one straight line, the object in between must also be selected in order to select the objects at both ends, so there is a fear that an object that is not desired by the user is selected.

To prevent this, the controller 180 may control the output of the display unit 151 so that the movement paths of the pointers between the objects do not overlap. 7A and 7B are exemplary diagrams for describing effectively arranging an object on the display unit 151. FIG. 7A illustrates an example of arranging objects radially, and FIG. 7B illustrates an example of arranging objects in two columns on the display unit.

As shown in FIG. 7A, when the objects 241 to 246 are radially disposed, since only two objects exist on the straight path between the objects, the movement paths of the pointers for selecting the plurality of objects do not overlap. .

Alternatively, as illustrated in FIG. 7B, the controller 180 may control the output of the display unit 151 to arrange the objects in two columns on the display unit 151. The controller can arrange the objects such that each column a 'and a' have the same color. Thus, the user can input a plurality of passwords by zigzag the pointer, so that the movement paths of the pointers between the objects can be prevented from overlapping.

In FIG. 7B, columns a ′ and a`` are shown to have the same color, but each column does not necessarily have to be set to have the same color. For example, after the control unit reads out the cryptographic information, according to the selection order of the graphic elements included in the cryptographic information, the odd-numbered selected graphic elements are arranged in column a`, and the even-numbered selected graphic elements are arranged in column a``, or By arranging, or vice versa, it is possible for a user to input a password in a zigzag.

When arranging the objects in two columns on the display unit, the user may input the password by zigzag selecting the objects shown in each column, but it is not necessary to input the password in zigzag.

Referring to FIG. 6A as an example, a path for selecting green (G), red (R), orange (O), and blue (B) may include a second object 232, a second object, in addition to the path shown. A path for selecting the first object 231, the sixth object 236, and the third object 233, the ninth object 239, the first object 231, the sixth object 236, and the third object 233. There may be various paths such as a path to select, a path to select the ninth object 239, an eighth object 238, a fourth object 234, and a third object 233. In other words, even objects in the same column can be set to input passwords continuously.

The controller 180 compares the cipher input signal and the cipher information, and when the graphic elements included in both match, the controller 180 releases the lock screen and outputs a menu for activating each function of the mobile terminal to the display unit 151. can do. If the graphic elements included in the two or the selection order of the graphic elements do not match, the controller 180 may output a password error message.

In this case, the controller 180 may set the touch sensing area of the object to be wider than the object area displayed on the screen for the convenience of the user's password input. FIG. 7 is an exemplary diagram for describing an extension of a touch sensing region of a figure object, and FIG. 8 illustrates the object in a circle for convenience of description. As illustrated in FIG. 8, when the object displayed on the display unit 151 is referred to as the first area A in the center, the object may be extended to the selection area of the object up to the second area B surrounding the first area. have. That is, the second area B is an auxiliary area of the first area A, which is not displayed on the screen but generates the same effect as touching the first area A when touched. By extending the area in which an object can be selected, rather than being displayed on the screen, it is possible to prevent a user's erroneous input and enhance user convenience.

9 is a flowchart illustrating a method of releasing a lock screen using a graphic interface according to an embodiment of the present invention. Referring to FIG. 9, the first step of storing the password information is to store the predetermined password information in the memory 160 in order to maintain security of the mobile terminal. In order to set encryption information, the controller 180 may output a plurality of objects that can be visually distinguished to the display unit 151. The user may create a password or enter a password by selecting one or more objects. When the user selects a plurality of objects, the selection order of the graphic elements may also be stored as encryption information. In this case, the user can unlock the mobile terminal by inputting the password in the same order as the selection order of the graphic elements selected when the password is set.

In operation of the display unit 151, the step of randomly determining and outputting a graphic element assigned to an object or the position of the object (S2), in order to unlock the mobile terminal, displays a screen for inputting a password. The output to the unit 151 is performed.

The display unit 151 enters a dormant state according to external operation or time elapses to maintain the efficiency of the power supply unit to the maximum. The display unit 151 in the dormant state is re-driven by an external operation, and the controller 180 provides a screen for inputting a password of the mobile terminal whenever the display unit 151 is driven. In this case, the controller 180 may control the display unit 151 to randomly determine the position of the object to be output or the graphic element assigned to the object whenever the display unit 151 is driven.

In operation S3, the controller 180 generates a password input signal based on an external input, and compares the password input information with the password input signal to determine whether to unlock the terminal. In operation 151, a password input signal including graphic elements of the selected object is generated, and the generated password input information is compared with the password information stored in the memory 160 to determine whether to unlock the mobile terminal.

If the graphic elements included in both the encryption input signal and the password information match, the controller 180 releases the lock screen (S4) and outputs a menu for activating each function of the mobile terminal to the display unit 151. do. If the graphic elements included in the graphic elements or the selection order of the graphic elements do not match, the controller 180 returns to a step S2 of outputting a password error message and outputting a screen for inputting a password.

According to an embodiment of the present invention, the above-described method can be implemented as a code readable by a processor on a medium on which a program is recorded. Examples of processor-readable media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, and may be implemented in the form of a carrier wave (for example, transmission over the Internet). Included.

In the above description, the display unit 151 of the mobile terminal is a touch screen capable of performing both the input device and the output device. For example, a method of inputting a password through the user input unit 130 such as a key pad may be used. Alternatively, the present invention may be implemented in various forms such as setting a different color for each backlight of the key pad and selecting a color through the key pad to input a password.

In addition, the above-described mobile terminal is not limited to the configuration and method of the embodiments described above, the embodiments are all or part of each of the embodiments may be selectively combined so that various modifications can be made It may be configured.

151: display unit
160: Memory
180:

Claims (8)

A display unit configured to output an object to which a graphic element that can be visually distinguished is allocated, on a screen;
A memory for storing cryptographic information; And
Control the output of the display unit so that the graphic element of the object or the output position of the object can be determined at random, generates a cryptographic input signal based on an external input for selecting the object, the cryptographic input signal and the cryptographic information Control to determine whether to unlock by comparing the
Mobile terminal having a password input method using a graphical interface comprising a. The method of claim 1, wherein the graphic element,
A mobile terminal having a password input method using a graphic interface, characterized in that at least one of a color, a picture, a figure and a picture. The method of claim 1, wherein the encryption input signal,
Whenever a pointer touches the display unit, it is generated based on selecting the objects one by one, or based on selecting at least two objects by dragging the pointer with the pointer in contact with the display unit. Mobile terminal having a password input method using a graphical interface, characterized in that it is generated by. The method of claim 1,
And at least three objects are output on the display unit such that the objects are not arranged in a straight line. The method of claim 1,
The object having a password input method using a graphic interface, characterized in that arranged in two columns on the display unit. The method of claim 1,
The object includes a first area displayed on the display unit and a second area surrounding the first area, the mobile terminal having a password input method using a graphical interface. Storing cryptographic information in a memory to maintain security of the mobile terminal;
At the operation of the display unit, randomly determining a graphic element assigned to an object or a position of the object and outputting the randomly positioned on the display unit; And
Generating an encryption input signal based on an external input, and comparing the encryption input signal with the information to determine whether to unlock the terminal;
Method of unlocking a mobile terminal using a graphical interface comprising a. Instructions for storing cryptographic information in a memory to maintain security of the mobile terminal;
Instructions for randomly determining and outputting a graphic element assigned to an object or the position of the object when the display unit is operated; And
A command for generating an encryption input signal based on an external input and comparing the encryption input signal with the information to determine whether to unlock the terminal;
Computer-readable recording medium recording the unlocking method of the mobile terminal using a graphical interface comprising a.

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