KR20120038777A - Mobile terminal and operation control method thereof - Google Patents

Abstract

PURPOSE: A portable terminal and operation control method thereof are provided to release a lock state by comparing a face shape acquired by a camera with the face shape registered in a portable terminal. CONSTITUTION: A control unit changes an operation mode into a locking state(S300). When the grip state of a user is sensed, the control unit detects the face shape of the user by analyzing image data acquired by a camera(S305-S315). When the detected face shape is matched with the registered face shape, the control unit releases the locking state(S320, S330).

Description

Mobile terminal and operation control method

The present invention relates to a portable terminal and a method for controlling the operation thereof, and more particularly, to a portable terminal and an operation control method for releasing a locked state by using a face shape obtained through a camera.

A portable terminal is a portable device that is portable and has one or more functions of making voice and video calls, inputting and outputting information, and storing data. As the functions of the portable terminal have diversified, they have complicated functions such as photographing and photographing, playing music files and video files, receiving games, receiving broadcasts, and wireless internet, and have developed a comprehensive multimedia player, .

In the portable terminal implemented in the form of such a multimedia device, new attempts have been applied in various ways in terms of hardware and software to implement complex functions. For example, a user interface environment for a user to search for or select a function easily and conveniently. In addition, a double-sided LCD (Liquid Crystal Display), a front touch screen, or the like, which are seen from both sides, may be applied to the mobile terminal.

However, in the case of a mobile terminal having a touch screen, a lock state in which no operation is performed on a touch input through a touch screen or a general key input may be set. The set lock state may be released by inputting a password, but may also be set by simply touching the touch screen for a predetermined time or by a key input in which a function is defined to release the lock state.

However, when the lock state is set to be released according to a simple touch input or a key input, the lock state may be released even if the user does not intend it. In addition, if the lock state is set to be released by inputting a password or the like, it is difficult for the user to quickly release the lock state to execute a desired function.

Accordingly, an object of the present invention is to provide a portable terminal device capable of naturally releasing a locked state if necessary, while preventing a user from unintentionally releasing the locked state, and a method for controlling the operation thereof.

In accordance with another aspect of the present invention, there is provided a method of controlling an operation of a portable terminal. Detecting a face shape of the face shape; and releasing the locked state if the detected face shape matches a face shape registered as unlocking.

In addition, the portable terminal according to the present invention includes a camera, a sensing unit for outputting a detection signal corresponding to a user's grip, and a state in which an operation mode is switched to a locked state, according to a change of the detection signal. When the state is detected, the controller detects the face shape of the user through analysis of the image data obtained by operating the camera, and if the detected face shape matches the face shape registered to unlock the control unit for releasing the locked state It includes.

According to the present invention, in a state in which the lock state is set, when the grip state of the user is detected, the lock state may be released according to a result of comparing the face shape obtained by operating the camera with a pre-registered face shape. Accordingly, while the lock state is prevented from being released by a simple touch input or the like, the lock state may be naturally released when the user grips the portable terminal for use and moves the face closer to the screen of the portable terminal.

1 is a block diagram of a portable terminal according to an embodiment of the present invention;
2 is a perspective view of a portable terminal according to an embodiment of the present invention;
3 is a flowchart provided to explain a process of setting a face shape for unlocking in a method of controlling an operation of a portable terminal according to the present invention;
4 is a flowchart provided to explain a process of releasing a locked state by comparing face shapes in a method of controlling an operation of a portable terminal according to the present invention; and
5 to 10 are views referred to for explaining the operation control method of the mobile terminal according to the present invention.

Hereinafter, with reference to the drawings will be described the present invention in more detail.

The portable terminal described in the present specification includes a tablet computer, a mobile phone, a smart phone, a notebook computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), Camera, navigation, e-book terminal, and the like. In addition, suffixes "module" and " part "for the components used in the following description are given merely for convenience of description, and do not give special significance or role in themselves. Therefore, the "module" and "unit" may be used interchangeably.

FIG. 1 is a block diagram of a portable terminal according to an exemplary embodiment of the present invention. Referring to FIG. Referring to FIG. 1, a mobile terminal according to an embodiment of the present invention will be described in terms of components according to functions.

1, the portable terminal 100 includes a wireless communication unit 110, an A / V input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, A memory 160, an interface unit 170, a control unit 180, and a power supply unit 190. Such components may be configured by combining two or more components into one component, or by dividing one or more components into two or more components as necessary when implemented in an actual application.

The wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 113, a wireless Internet module 115, a short distance communication module 117, and a GPS module 119.

The broadcast receiving module 111 receives at least one of a broadcast signal and broadcast related information from an external broadcast management server through a broadcast channel. In this case, the broadcast channel may include a satellite channel, a terrestrial channel, and the like. The broadcast management server may refer to a server for generating and transmitting at least one of a broadcast signal and broadcast related information and a server for receiving at least one of the generated broadcast signal and broadcast related information and transmitting the broadcast signal to the terminal.

The broadcast related information may mean information related to a broadcast channel, a broadcast program, or a broadcast service provider. The broadcast signal may include not only a TV broadcast signal, a radio broadcast signal, and a data broadcast signal, but also a broadcast signal having a data broadcast signal combined with a TV broadcast signal or a radio broadcast signal. The broadcast related information may also be provided through a mobile communication network, and in this case, may be received by the mobile communication module 113. 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).

The broadcast receiving module 111 receives broadcast signals using various broadcasting systems. In particular, the broadcast receiving module 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S) ), Digital Video Broadcast-Handheld (DVB-H), Integrated Services Digital Broadcast-Terrestrial (ISDB-T), and the like. In addition, the broadcast receiving module 111 may be configured to be suitable for all broadcasting systems that provide broadcasting signals, as well as the digital broadcasting system. 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 113 transmits and receives a radio signal with at least one of a base station, an external terminal, and a server on a mobile communication network. Here, the wireless signal may include various types of data according to a voice call signal, a video call signal, or a text / multimedia message transmission / reception.

The wireless Internet module 115 refers to a module for wireless Internet access, and the wireless Internet module 115 can be embedded in the mobile terminal 100 or externally. 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 117 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 the short distance communication technology.

A GPS (Global Position System) module 119 receives position information from a plurality of GPS satellites.

The 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 123. 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 may 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. The camera 121 may be equipped with two or more cameras according to the configuration of the terminal.

The microphone 123 receives an external sound signal by 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 113 and output when the voice data is in the call mode. The microphone 123 may be a variety of noise reduction algorithms for eliminating noise generated in receiving an external sound signal.

The user input unit 130 generates key input data input by the user for controlling the operation of the terminal. The user input unit 130 may include a key pad, a dome switch, a touch pad (constant voltage / capacitance), etc. that may receive a command or information by a user's push or touch operation. In addition, the user input unit 130 may be configured as a jog wheel or a jog method or a joystick that rotates a key, a finger mouse, or the like. Particularly, when the touch pad has a mutual layer structure with the display unit 151 described later, it can be called a touch screen.

The sensing unit 140 senses the current state of the portable terminal 100 such as the open / close state of the portable terminal 100, the position of the portable terminal 100, Thereby generating a sensing signal. 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, it may be responsible for sensing functions related to whether the power supply unit 190 is supplied with power, whether the interface unit 170 is coupled to an external device, and the like.

The sensing unit 140 may include a detection sensor 141, a pressure sensor 143, a motion sensor 145, and the like. The detection sensor 141 detects the presence of an object approaching the portable terminal 100 or an object existing in the vicinity of the portable terminal 100 without mechanical contact. The detection sensor 141 may detect a proximity object by using a change in an alternating magnetic field or a change in a static magnetic field, or using a change rate of capacitance. The sensor 141 may be provided with two or more according to the configuration aspect.

The pressure sensor 143 may detect whether pressure is applied to the portable terminal 100, the magnitude of the pressure, and the like. The pressure sensor 143 may be installed at a portion where the pressure of the portable terminal 100 is required depending on the use environment. If the pressure sensor 143 is installed in the display unit 151, a touch input through the display unit 151 and a greater pressure than the touch input are applied according to a signal output from the pressure sensor 143. The pressure touch input can be identified. Also, the magnitude of the pressure applied to the display unit 151 at the time of the pressure touch input can be determined according to the signal output from the pressure sensor 143. [

The motion sensor 145 detects the position and movement of the portable terminal 100 using an acceleration sensor, a gyro sensor, or the like. An acceleration sensor that can be used for the motion sensor 145 is a device that converts an acceleration change in one direction into an electric signal and is widely used along with the development of MEMS (micro-electromechanical systems) technology. The acceleration sensor measures the acceleration of a small value built in the airbag system of an automobile and recognizes the minute motion of the human hand and measures the acceleration of a large value used as an input means such as a game There are various types. Acceleration sensors are usually constructed by mounting two or three axes in one package. Depending on the usage environment, only one axis of Z axis is required. Therefore, when the acceleration sensor in the X-axis direction or the Y-axis direction is used instead of the Z-axis direction for some reason, the acceleration sensor may be mounted on the main substrate by using a separate piece substrate.

The gyro sensor is a sensor for measuring the angular velocity, and it can sense the direction of rotation with respect to the reference direction.

The output unit 150 is for outputting an audio signal, a video signal, or an alarm signal. The output unit 150 may include a display unit 151, an audio output module 153, an alarm unit 155, and a haptic module 157.

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

Meanwhile, as described above, when the display unit 151 and the touch pad form a mutual layer structure and constitute a touch screen, the display unit 151 is an input device capable of inputting information by a user's touch in addition to the output device. May also be used.

If the display unit 151 is configured as a touch screen, it may include a touch screen panel, a touch screen panel controller, and the like. In this case, the touch screen panel is a transparent panel attached to the outside and may be connected to the internal bus of the portable terminal 100. The touch screen panel keeps a watch on the contact result, and if there is a touch input, sends the corresponding signals to the touch screen panel controller. The touch screen panel controller processes the signals, and then transmits corresponding data to the controller 180 so that the controller 180 can determine whether the touch input has been made and which area of the touch screen has been touched.

The display unit 151 may be formed of an e-paper. Electronic paper (e-Paper) is a kind of reflective display, and has excellent visual characteristics such as high resolution, wide viewing angle and bright white background as conventional paper and ink. The electronic paper (e-paper) can be implemented on any substrate such as plastic, metal, paper, and the image is retained even after the power is shut off, and the battery life of the portable terminal 100 is long Can be maintained. As the electronic paper, a hemispherical twist ball filled with a telephone can be used, or an electrophoresis method and a microcapsule can be used.

In addition, the display unit 151 may include a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, and a three-dimensional display. It may include at least one of (3D display). In addition, two or more display units 151 may exist according to the implementation form of the mobile terminal 100. For example, the external display unit (not shown) and the internal display unit (not shown) may be simultaneously provided in the portable terminal 100.

The audio output module 153 outputs audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception mode, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, The sound output module 153 outputs sound signals related to functions performed in the portable terminal 100, for example, a call signal reception tone, a message reception tone, and the like. The sound output module 153 may include a speaker, a buzzer, and the like.

The alarm unit 155 outputs a signal for notifying the occurrence of an event of the portable terminal 100. Examples of events occurring in the portable terminal 100 include call signal reception, message reception, and key signal input. The alarm unit 155 outputs a signal for notifying occurrence of an event in a form other than an audio signal or a video signal. For example, the signal may be output in the form of vibration. The alarm unit 155 can output a signal to notify when a call signal is received or a message is received. In addition, when the key signal is input, the alarm unit 155 may output the signal as a feedback to the key signal input. The user may recognize the occurrence of an event through the signal output from the alarm unit 155. A signal for notifying the occurrence of an event in the portable terminal 100 may also be output through the display unit 151 or the sound output module 153. [

The haptic module 157 generates various tactile effects that the user can feel. A typical example of the haptic effect generated by the haptic module 157 is a vibration effect. When the haptic module 157 generates vibration with a haptic effect, the intensity and pattern of the vibration generated by the haptic module 157 can be converted, and the different vibrations can be synthesized and output or sequentially output.

In addition to the vibration, the haptic module 157 may be provided with a function of stimulating by a pin arrangement vertically moving with respect to the contact skin surface, an effect of stimulating air through the injection or suction force of the air through the injection port or the suction port, The effect of stimulation through contact of an electrode (eletrode), the effect of stimulation by electrostatic force, and the effect of reproducing a cold sensation using a device capable of endothermic or exothermic can be generated. The haptic module 157 can be implemented not only to transmit the tactile effect through direct contact but also to feel the tactile effect through the muscular sense of the user's finger or arm. Two or more haptic modules 157 may be provided according to a configuration aspect of the mobile terminal 100.

The memory 160 may store a program for processing and controlling the controller 180 and may provide a function for temporarily storing input or output data (for example, a phone book, a message, a still image, a video, etc.). It can also be done.

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 , And a ROM. ≪ / RTI > In addition, the mobile terminal 100 may operate a web storage that performs a storage function of the memory 150 on the Internet.

The interface unit 170 serves as an interface with all external devices connected to the portable terminal 100. Examples of the external device connected to the portable terminal 100 include a wired / wireless headset, an external charger, a wired / wireless data port, a memory card, a SIM (Subscriber Identification Module) card, a UIM An audio input / output (I / O) terminal, a video I / O (input / output) terminal, and an earphone. The interface unit 170 receives data from the external device or receives power from the external device and transmits the data to each component in the portable terminal 100 so that data in the portable terminal 100 can be transmitted to the external device .

The interface unit 170 is a path through which power from the cradle connected when the portable terminal 100 is connected to the external cradle is supplied to the portable terminal 100 or various command signals inputted from the cradle by the user are carried And may be a passage to be transmitted to the terminal 100.

The controller 180 typically controls the operation of the respective units to control the overall operation of the mobile terminal 100. For example, perform related control and processing for voice calls, data communications, video calls, and the like. In addition, the controller 180 may include a multimedia playback module 181 for multimedia playback. The multimedia playback module 181 may be configured in hardware in the controller 180 or may be configured in software separately from the controller 180.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power necessary for operation of the respective components.

The mobile terminal 100 having such a configuration can be configured to be operable in a communication system capable of transmitting data through a frame or a packet, including a wired / wireless communication system and a satellite-based communication system. have.

2 is a perspective view of a portable terminal according to an embodiment of the present invention viewed from the front. Referring to FIG. 2, the case constituting the outer appearance of the portable terminal 100 is formed by the front case 100-1 and the rear case 100-2. Various electronic components are incorporated in the space formed by the front case 100-1 and the rear case 100-2. The front case 100-1 and the rear case 100-2 may be formed by injecting a synthetic resin, or may be formed to have a metal material such as stainless steel (STS) or titanium (Ti).

The display unit 151, the audio output module 153, the camera 121, and the user input unit 130 may be disposed in the main body, specifically, the front case 100-1.

The display unit 151 may be constructed such that the touch pad is overlapped with the layer structure so that the display unit 151 operates as a touch screen so that information can be input by a user's touch.

The sound output module 153 may be implemented in the form of a receiver or a speaker. The camera 121 may be implemented in a form suitable for capturing an image or a video of a user or the like.

Other user input units (not shown), a microphone (not shown), and an interface unit (not shown) may be additionally disposed in terms of the front case and the rear case.

The user input unit 130 may be adopted in any manner as long as the user is operating in a tactile manner while giving a tactile feeling. For example, the user input unit 130 may be implemented as a dome switch or a touch pad that may receive a command or information by a user's push or touch operation, or may be operated as a wheel or jog or a joystick that rotates a key. Or the like. In the functional aspect, the user input unit 130 may input a command such as start, end, scroll, etc., input letters, numbers, special symbols, etc., select an operation mode, and activate a special function in the mobile terminal 100. It can act as a hot-key or the like. The microphone may be implemented in a form suitable for receiving a user's voice or other sound.

Another camera (not shown) may be additionally mounted on the rear of the rear case 100-2, wherein another camera to be mounted has a shooting direction substantially opposite to that of the camera 121 disposed at the front, and is different from each other. It may have a pixel. For example, the camera 121 disposed at the front has a low pixel so that it is not overwhelming to take a user's face and transmit it to a counterpart in the case of a video call. In many cases, it is desirable to have a high pixel.

Another sound output module (not shown) may be further disposed on the rear case 100-2. The sound output module disposed on the rear case 100-2 may implement a stereo function together with the sound output module 153 disposed on the front surface, and may be used for a call in the speakerphone mode.

In addition, an antenna (not shown) for receiving a broadcast signal may be disposed in one area of the proton case 100-1 and the rear case 100-2. The antenna may be installed to be capable of being drawn out from the rear case 100-2.

A power supply unit (not shown) for supplying power to the portable terminal 100 may be mounted on the rear case 100-2 side. The power supply unit is, for example, a rechargeable battery, and may be detachably coupled to the rear case 100-2 for charging.

3 is a flowchart provided to explain a process of setting a face shape for unlocking in a method of controlling an operation of a portable terminal according to an embodiment of the present invention.

Referring to FIG. 3, when a face registration mode for setting a face shape used for unlocking is selected according to a user command (S200), the controller 180 acquires an image through the camera 121 (S205). In operation S210, the acquired image is displayed on the display unit 151.

In this case, the controller 180 may detect a face region through analysis of an image acquired through the camera 121, and display a boundary line displayed along the boundary of the face on the image displayed on the display unit 151.

A general face recognition algorithm may be used to identify the face shape. However, in the case of simply using a face size or shape, a method of identifying a face boundary or the like according to a change in pixel value may be used.

The user may move the mobile terminal 100 back and forth, and set a face shape of an appropriate size as a face shape for unlocking.

When the user selects an image of an appropriate distance and inputs a face shape (S215), the controller 180 analyzes the image displayed on the display unit 151 and extracts the extracted face shape as a face shape for unlocking. It is registered and stored in the memory 160 (S220). In this case, the face shape may use a distance between a specific part of the face, such as a face size, a face shape, a distance between eyes and eyes, a distance between nose and lips, and the like according to a setting item.

The input for registering the face shape may use an input for touching a region of the display unit 151 or other key input. In the case of registering a face shape, an operation mode, an operating environment, and the like corresponding to the registered face shape may be set together. A plurality of face shapes may be registered for each user.

By this process, it is possible to set the face shape used for unlocking.

4 is a flowchart provided to explain a process of releasing a locked state by using a face shape in a method of controlling an operation of a portable terminal according to an embodiment of the present invention.

Referring to FIG. 4, when there is no touch input or key input for a predetermined time or a lock command of the user, the controller 180 does not perform any operation on a touch input or a general key input. The operation mode is switched to (S300).

The locked state is a state in which no operation is performed on a touch input or a general key input through the display unit 151 except for an input defined as unlocking. Such a lock state may be set for the entire operation menu or only for a specific operation menu. For example, the lock state may be set only for a specific operation menu such as a telephone call, internet use, privacy protection, and the like. When the lock state is set, an icon indicating that the lock state is set may be displayed, or a notification signal such as a sound effect or a tactile effect may be output.

After the locked state is set, the controller 180 determines whether the user is in a gripped state (S305). Here, the state grasped by the user means a state in which the user holds the portable terminal 100. Whether the user grips the portable terminal 100 may be determined according to a change in a detection signal output from a touch sensor, a temperature sensor, a pressure sensor, and a motion sensor provided in the main body. Depending on the setting state, the case where the user's hand, face or the like touches the main body may be regarded as the state held by the user.

As a result of the determination in step S305, if it is determined that the user gripped, the controller 150 operates the camera 121 (S310), and acquires an image through the camera 121 (S315).

Then, by analyzing the image acquired through the camera 121 to detect the shape of the face, and compares with the registered face shape (S320). At this time, the comparison of the face shape may simply compare the size or shape of the face, or may be determined by using a distance between specific parts of the face such as the position of the eyes and the nose on the face.

As a result of comparing the face shapes, when the shape of the face detected in the image acquired through the camera 121 and the previously registered face shape match, the controller 180 releases the locked state (S330). When the lock state is released, a notification sound such as a tactile effect may be output because the sound effect corresponds to the release of the lock state.

After releasing the locked state, the user may enter a preset operation mode or establish a preset operating environment according to the recognized face shape.

In addition, when the face shape acquired through the camera 121 does not match the registered face shape for a certain time, a guide message for explaining the lock state process may be displayed, or the lock state may be released by inputting a password. You can also display a separate menu.

By such a process, when the user grips the main body to use the portable terminal, the lock state may be naturally released when the face approaches the screen of the portable terminal 100.

5 to 10 are diagrams referred to for describing an operation control method of a mobile terminal according to the present invention.

5 illustrates an example of a screen displaying a user image acquired through a camera. As shown in FIG. 5, the user's face 403 may be recognized on the screen 400 displaying the image acquired through the camera 121 and registered in the form of a face for unlocking.

6 illustrates a screen displayed when a face shape is selected for registration. As shown in Fig. 6, when there is an input for registering the face shape, a screen 410 displaying the detected face shape 413 is displayed, and the detected face shape 413 is registered for unlocking. .

7 illustrates a state in which the user grips the portable terminal for use. As shown in FIG. 7, when the user 500 grips the portable terminal 100 in a locked state, the camera 121 operates to detect a face shape of the user 500.

Whether the user holds the mobile terminal 100 may be detected by arranging a touch sensor, a temperature sensor, a pressure sensor, or the like on the boundary of the display unit 151, or detecting the movement of the main body using a motion sensor. You can figure it out.

8 illustrates a screen 510 for comparing the detected face shape 520 with the registered face shape 530. As described above, when the detected face shape 520 is compared with the width or shape of the registered face shape 530, the locked state may be released.

As shown in FIG. 9, the horizontal and vertical lengths 521 and 523 of the detected face shape 520 are compared with the registered face shape, or the horizontal lengths of the detected face shape 520 and the registered face shape are determined. It may be determined whether or not the match using the ratio of the vertical length.

As shown in FIG. 10, it may be determined whether the face shape detected from the acquired user image matches the registered face shape based on the positions of the eyes and the noses P1, P2, and P3. In addition, various methods may be used to determine whether the detected face shape matches the registered face shape. In addition, the portable terminal and its operation control method according to the present invention are not limited to the configuration and method of the embodiments described as described above, the embodiments are all of the embodiments so that various modifications can be made Or some may be selectively combined.

Meanwhile, the present invention can be implemented as a processor-readable code in a processor-readable recording medium provided in a portable terminal. The processor-readable recording medium includes all kinds of recording devices that store data that can be read by the processor. Examples of the processor-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like, and also include a carrier wave such as transmission through the Internet. In addition, the processor readable recording medium may be distributed over networked computer systems so that code readable by the processor in a distributed manner can be stored and executed.

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 should be understood that various modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention.

110: wireless communication unit 120: A / V input unit
130: user input unit 140: sensing unit
150: output unit 151: display unit
160: memory 170: interface unit
180:

Claims (15)

Switching the operational mode to a locked state;
Detecting a face shape of the user through analysis of image data obtained by operating a camera when a grip state of the user is detected; And
If the detected face shape matches the face shape registered as unlocking, releasing the locked state. The method of claim 1,
The control method of the mobile terminal, characterized in that whether the user is in the state of gripping, based on the change in the detection signal output from at least one of the temperature sensor, the touch sensor, and the motion sensor. The method of claim 1,
And after the locking state is released, entering a preset operation mode corresponding to the registered face shape. The method of claim 1,
And after the locking state is released, establishing a predetermined operating environment corresponding to the registered face shape. The method of claim 1,
The match of the face shape is determined based on any one of a face size, a face shape, a horizontal length and length of a face, and a position of an eye and a nose. The method of claim 1,
And providing a menu for setting the registered face shape. The method of claim 1,
And displaying a guide message for releasing the locked state. The method of claim 1,
If the detected face shape does not match the registered face shape, displaying a menu for releasing the locked state. The method of claim 1,
And outputting a notification signal corresponding to the switching and releasing of the locked state. camera;
A sensing unit configured to output a sensing signal corresponding to whether a user is gripped; And
When the grip state of the user is detected according to the change of the detection signal while the operation mode is switched to the locked state, the face shape of the user is detected by analyzing the image data obtained by operating the camera. And a controller for releasing the locked state if the detected face shape matches the face shape registered as unlock. The method of claim 10,
And a memory configured to store data corresponding to the registered face shape. The method of claim 10,
The controller, after releasing the locked state, controls to enter a preset operation mode corresponding to the registered face shape. The method of claim 10,
The controller, after releasing the locked state, establishes a preset operating environment corresponding to the registered face shape. The method of claim 10,
Further comprising a display unit,
The controller may display a guide message for releasing the lock on the display unit. The method of claim 14,
And the controller displays a menu for releasing the locked state on the display unit if the detected face form does not match the registered face form.

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