KR20150141083A - Mobile terminal and method for controlling the same - Google Patents

Abstract

The present invention relates to a mobile terminal performing a screen protection function, which may include: a camera provided on the front side of a body of the terminal; a display unit for displaying an operation screen; and a control unit which performs eye tracking by using a user image obtained through the camera and executes the screen protection function based on the eye tracking.

Description

[0001] MOBILE TERMINAL AND METHOD FOR CONTROLLING THE SAME [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a mobile terminal and a control method thereof, and more particularly, to a mobile terminal capable of providing different screens according to a viewing direction of a display unit and a control method thereof.

A terminal can be divided into a mobile / portable terminal and a stationary terminal depending on whether the terminal is movable or not. The mobile terminal can be divided into a handheld terminal and a vehicle mounted terminal according to whether the user can directly carry the mobile terminal.

The functions of mobile terminals are diversified. For example, there are data and voice communication, photographing and video shooting through a camera, voice recording, music file playback through a speaker system, and outputting an image or video on a display unit. Some terminals are equipped with an electronic game play function or a multimedia player function. In particular, modern mobile terminals can receive multicast signals that provide visual content such as broadcast and video or television programs.

Such a terminal has various functions, for example, a multimedia player having a complex function such as photographing or moving picture shooting, reproduction of music or video file, reception of game or broadcasting, . In order to implement complex functions, mobile terminals implemented in the form of multimedia devices are being applied variously in terms of hardware and software.

In recent years, as interest in personal information and personal privacy has increased, it is increasingly necessary to apply various security technologies and screen protection technologies to various electronic devices. In particular, when a mobile terminal is used in a public place where many people exist, such as a subway or an amusement park, since the surrounding people can secretly view the terminal screen of the user, the user's own personal information is exposed naturally, There is concern that privacy may be violated.

Accordingly, when a mobile terminal is used in a public place where there are many people, it is necessary to provide a user interface environment for protecting personal information and privacy of a terminal user.

The present invention is directed to solving the above-mentioned problems and other problems. Another object of the present invention is to provide a mobile terminal and a control method thereof that can perform a screen protection function by outputting different screens according to the viewing direction of the display unit.

According to an aspect of the present invention, there is provided a camera comprising: a camera disposed on a front surface of a terminal body; A display unit for displaying an operation screen; And a controller for performing eye tracking using the user image acquired through the camera and executing a screen protection function based on the eye tracking.

According to another aspect of the present invention, there is provided a display device comprising: a display unit capable of outputting different operation screens according to a viewing angle; And a screen control function for detecting an event for automatically executing the screen protection function so that the first operation screen is displayed in the front view angle direction of the display unit when the event is detected, And a second operation screen is displayed in a direction of the first operation screen.

Effects of the mobile terminal and the control method according to the present invention will be described as follows.

According to at least one embodiment of the present invention, when a mobile phone is used in a public place or the like, different screens are provided according to the viewing direction of the display unit, thereby preventing personal information and privacy information from being exposed to a third party .

Meanwhile, various other effects will be directly or implicitly disclosed in the detailed description according to the embodiment of the present invention to be described later.

FIG. 1A is a block diagram illustrating a mobile terminal according to the present invention; FIG.
FIG. 1B and FIG. 1C are conceptual diagrams illustrating an example of a mobile terminal according to the present invention in different directions; FIG.
Figures 2 and 3 are referenced to describe a multi-view display for use in a mobile terminal according to various embodiments of the present invention;
4 is a diagram referred to describe a veil view display for use in a mobile terminal according to various embodiments of the present invention;
FIG. 5 is a flowchart illustrating an operation of a mobile terminal according to a first embodiment of the present invention; FIG.
FIGS. 6 and 7 are diagrams referred to explain the operation of the mobile terminal according to the first embodiment of the present invention; FIG.
FIG. 8 is a flowchart illustrating an operation of a mobile terminal according to a second embodiment of the present invention; FIG.
FIGS. 9 and 10 are diagrams referred to explain operations of a mobile terminal according to a second embodiment of the present invention;
11 is a flowchart illustrating an operation of a mobile terminal according to a third embodiment of the present invention;
FIG. 12 is a diagram referred to explain an operation of a mobile terminal according to a third embodiment of the present invention; FIG.
FIG. 13 is a flowchart illustrating an operation of a mobile terminal according to a fourth embodiment of the present invention; FIG.
14 to 16 are diagrams referred to explain the operation of the mobile terminal according to the fourth embodiment of the present invention;
17 is a diagram referred to explain the operation of a mobile terminal that recognizes ambient illuminance and provides a screen protection function;
18 is a view referred to explain an example of an operation screen that can be output in the side view angle direction of the display unit;

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted. 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. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

The mobile terminal described in this specification 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 navigation device, a slate PC A tablet PC, an ultrabook, a wearable device such as a smartwatch, a smart glass, and a head mounted display (HMD). have.

However, it will be appreciated by those skilled in the art that the configuration according to the embodiments described herein may be applied to fixed terminals such as a digital TV, a desktop computer, a digital signage, and the like, will be.

1A to 1C are block diagrams for explaining a mobile terminal according to the present invention, and FIGS. 1B and 1C are conceptual diagrams showing an example of a mobile terminal according to the present invention in different directions.

The mobile terminal 100 includes a wireless communication unit 110, an input unit 120, a sensing unit 140, an output unit 150, an interface unit 160, a memory 170, a control unit 180, ), And the like. The components shown in FIG. 1A are not essential for implementing a mobile terminal, so that the mobile terminal described herein may have more or fewer components than the components listed above.

The wireless communication unit 110 may be connected between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and another mobile terminal 100 or between the mobile terminal 100 and the external server 100. [ Lt; RTI ID = 0.0 > wireless < / RTI > In addition, the wireless communication unit 110 may include one or more modules for connecting the mobile terminal 100 to one or more networks.

The wireless communication unit 110 may include at least one of a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short distance communication module 114, and a location information module 115 .

The input unit 120 includes a camera 121 or an image input unit for inputting a video signal, a microphone 122 for inputting an audio signal, an audio input unit, a user input unit 123 for receiving information from a user A touch key, a mechanical key, and the like). The voice data or image data collected by the input unit 120 may be analyzed and processed by a user's control command.

The sensing unit 140 may include at least one sensor for sensing at least one of information in the mobile terminal, surrounding environment information surrounding the mobile terminal, and user information. For example, the sensing unit 140 may include a proximity sensor 141, an illumination sensor 142, a touch sensor, an acceleration sensor, a magnetic sensor, A G-sensor, a gyroscope sensor, a motion sensor, an RGB sensor, an infrared sensor, a finger scan sensor, an ultrasonic sensor, A microphone 226, a battery gauge, an environmental sensor (for example, a barometer, a hygrometer, a thermometer, a radiation detection sensor, A thermal sensor, a gas sensor, etc.), a chemical sensor (e.g., an electronic nose, a healthcare sensor, a biometric sensor, etc.). Meanwhile, the mobile terminal disclosed in the present specification can combine and utilize information sensed by at least two of the sensors.

The output unit 150 includes at least one of a display unit 151, an acoustic output unit 152, a haptic tip module 153, and a light output unit 154 to generate an output related to visual, auditory, can do. The display unit 151 may have a mutual layer structure with the touch sensor or may be integrally formed to realize a touch screen. The touch screen may function as a user input unit 123 that provides an input interface between the mobile terminal 100 and a user and may provide an output interface between the mobile terminal 100 and a user.

The interface unit 160 serves as a path to various types of external devices connected to the mobile terminal 100. The interface unit 160 is connected to a device having a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, And may include at least one of a port, an audio I / O port, a video I / O port, and an earphone port. In the mobile terminal 100, corresponding to the connection of the external device to the interface unit 160, it is possible to perform appropriate control related to the connected external device.

In addition, the memory 170 stores data supporting various functions of the mobile terminal 100. The memory 170 may store a plurality of application programs or applications running on the mobile terminal 100, data for operation of the mobile terminal 100, and commands. At least some of these applications may be downloaded from an external server via wireless communication. Also, at least a part of these application programs may exist on the mobile terminal 100 from the time of shipment for the basic functions (e.g., telephone call receiving function, message receiving function, and calling function) of the mobile terminal 100. Meanwhile, the application program may be stored in the memory 170, installed on the mobile terminal 100, and may be operated by the control unit 180 to perform the operation (or function) of the mobile terminal.

In addition to the operations related to the application program, the control unit 180 typically controls the overall operation of the mobile terminal 100. The control unit 180 may process or process signals, data, information, and the like input or output through the above-mentioned components, or may drive an application program stored in the memory 170 to provide or process appropriate information or functions to the user.

In addition, the controller 180 may control at least some of the components illustrated in FIG. 1A in order to drive an application program stored in the memory 170. FIG. In addition, the controller 180 may operate at least two of the components included in the mobile terminal 100 in combination with each other for driving the application program.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power to the components included in the mobile terminal 100. The power supply unit 190 includes a battery, which may be an internal battery or a replaceable battery.

At least some of the components may operate in cooperation with one another to implement a method of operation, control, or control of a mobile terminal according to various embodiments described below. In addition, the operation, control, or control method of the mobile terminal may be implemented on the mobile terminal by driving at least one application program stored in the memory 170. [

Hereinafter, the various components of the mobile terminal 100 will be described in detail with reference to FIG. 1A.

First, referring to the wireless communication unit 110, the broadcast receiving module 111 of the wireless communication unit 110 receives broadcast signals 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. Two or more broadcast receiving modules may be provided to the mobile terminal 100 for simultaneous broadcast reception or broadcast channel switching for at least two broadcast channels.

The mobile communication module 112 may be a mobile communication module or a mobile communication module such as a mobile communication module or a mobile communication module that uses technology standards or a communication method (e.g., Global System for Mobile communication (GSM), Code Division Multi Access (CDMA), Code Division Multi Access 2000 (Enhanced Voice-Data Optimized or Enhanced Voice-Data Only), Wideband CDMA (WCDMA), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution And an external terminal, or a server on a mobile communication network established according to a long term evolution (AR), a long term evolution (AR), or the like.

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. The wireless Internet module 113 is configured to transmit and receive a wireless signal in a communication network according to wireless Internet technologies.

Wireless Internet technologies include, for example, wireless LAN (WLAN), wireless fidelity (Wi-Fi), wireless fidelity (Wi-Fi) Direct, DLNA (Digital Living Network Alliance), WiBro Interoperability for Microwave Access, High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution (LTE) and Long Term Evolution-Advanced (LTE-A) 113 transmit and receive data according to at least one wireless Internet technology, including Internet technologies not listed above.

The wireless Internet module 113 for performing a wireless Internet connection through the mobile communication network can be used for wireless Internet access by WiBro, HSDPA, HSUPA, GSM, CDMA, WCDMA, LTE or LTE- May be understood as a kind of the mobile communication module 112.

The short-range communication module 114 is for short-range communication, and includes Bluetooth ™, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB) (Near Field Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) technology. The short-range communication module 114 is connected to the mobile terminal 100 and the wireless communication system through the wireless area networks, between the mobile terminal 100 and another mobile terminal 100, or between the mobile terminal 100 ) And the other mobile terminal 100 (or the external server). The short-range wireless communication network may be a short-range wireless personal area network.

Here, the other mobile terminal 100 may be a wearable device (e.g., a smartwatch, a smart glass, etc.) capable of interchanging data with the mobile terminal 100 according to the present invention (smart glass), HMD (head mounted display)). The short range communication module 114 may detect (or recognize) a wearable device capable of communicating with the mobile terminal 100 around the mobile terminal 100. [ If the detected wearable device is a device authenticated to communicate with the mobile terminal 100 according to the present invention, the control unit 180 may transmit at least a part of the data processed by the mobile terminal 100 to the short- 114 to the wearable device. Therefore, the user of the wearable device can use the data processed by the mobile terminal 100 through the wearable device. For example, according to this, when a telephone is received in the mobile terminal 100, the user performs a telephone conversation via the wearable device, or when a message is received in the mobile terminal 100, It is possible to check the message.

The position information module 115 is a module for obtaining the position (or current position) of the mobile terminal, and a representative example thereof is a Global Positioning System (GPS) module or a Wireless Fidelity (WiFi) module. For example, when the mobile terminal utilizes the GPS module, it can acquire the position of the mobile terminal by using a signal transmitted from the GPS satellite. As another example, when the mobile terminal utilizes the Wi-Fi module, it can acquire the position of the mobile terminal based on information of a wireless access point (AP) that transmits or receives the wireless signal with the Wi-Fi module. Optionally, the location information module 115 may perform any of the other functions of the wireless communication unit 110 to obtain data relating to the location of the mobile terminal, in addition or alternatively. The location information module 115 is a module used to obtain the location (or current location) of the mobile terminal, and is not limited to a module that directly calculates or obtains the location of the mobile terminal.

Next, the input unit 120 is for inputting image information (or signal), audio information (or signal), data, or information input from a user. For inputting image information, Or a plurality of cameras 121 may be provided. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video communication mode or the photographing mode. The processed image frame may be displayed on the display unit 151 or stored in the memory 170. [ A plurality of cameras 121 provided in the mobile terminal 100 may be arranged to have a matrix structure and various angles or foci may be provided to the mobile terminal 100 through the camera 121 having the matrix structure A plurality of pieces of image information can be input. In addition, the plurality of cameras 121 may be arranged in a stereo structure to acquire a left image and a right image for realizing a stereoscopic image.

The microphone 122 processes the external acoustic signal into electrical voice data. The processed voice data can be utilized variously according to a function (or a running application program) being executed in the mobile terminal 100. Meanwhile, the microphone 122 may be implemented with various noise reduction algorithms for eliminating noise generated in receiving an external sound signal.

The user input unit 123 is for receiving information from a user and when the information is inputted through the user input unit 123, the control unit 180 can control the operation of the mobile terminal 100 to correspond to the input information . The user input unit 123 may include a mechanical input means (or a mechanical key such as a button located on the front, rear or side of the mobile terminal 100, a dome switch, a jog wheel, Jog switches, etc.) and touch-type input means. For example, the touch-type input means may comprise a virtual key, a soft key or a visual key displayed on the touch screen through software processing, The virtual key or the visual key can be displayed on the touch screen with various forms. For example, the virtual key or the visual key can be displayed on the touch screen, ), An icon, a video, or a combination thereof.

Meanwhile, the sensing unit 140 senses at least one of information in the mobile terminal, surrounding environment information surrounding the mobile terminal, and user information, and generates a corresponding sensing signal. The control unit 180 may control the driving or operation of the mobile terminal 100 or may perform data processing, function or operation related to the application program installed in the mobile terminal 100 based on the sensing signal. Representative sensors among various sensors that may be included in the sensing unit 140 will be described in more detail.

First, the proximity sensor 141 refers to a sensor that detects the presence of an object approaching a predetermined detection surface, or the presence of an object in the vicinity of the detection surface, without mechanical contact by using electromagnetic force or infrared rays. The proximity sensor 141 may be disposed in the inner area of the mobile terminal or in proximity to the touch screen, which is covered by the touch screen.

Examples of the proximity sensor 141 include a transmission type photoelectric sensor, a direct reflection type photoelectric sensor, a mirror reflection type photoelectric sensor, a high frequency oscillation type proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor. In the case where the touch screen is electrostatic, the proximity sensor 141 can be configured to detect the proximity of the object with a change of the electric field along the proximity of the object having conductivity. In this case, the touch screen (or touch sensor) itself may be classified as a proximity sensor.

On the other hand, for convenience of explanation, the act of recognizing that the object is located on the touch screen in proximity with no object touching the touch screen is referred to as "proximity touch & The act of actually touching an object on the screen is called a "contact touch. &Quot; The position at which the object is closely touched on the touch screen means a position where the object corresponds to the touch screen vertically when the object is touched. The proximity sensor 141 can detect a proximity touch and a proximity touch pattern (e.g., a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, have. Meanwhile, the control unit 180 processes data (or information) corresponding to the proximity touch operation and the proximity touch pattern sensed through the proximity sensor 141 as described above, and further provides visual information corresponding to the processed data It can be output on the touch screen. Furthermore, the control unit 180 can control the mobile terminal 100 such that different operations or data (or information) are processed according to whether the touch to the same point on the touch screen is a proximity touch or a touch touch .

The touch sensor uses a touch (or touch input) applied to the touch screen (or the display unit 151) by using at least one of various touch methods such as a resistance film type, a capacitive type, an infrared type, an ultrasonic type, Detection.

For example, the touch sensor may be configured to convert a change in a pressure applied to a specific portion of the touch screen or a capacitance generated in a specific portion to an electrical input signal. The touch sensor may be configured to detect a position, an area, a pressure at the time of touch, a capacitance at the time of touch, and the like where a touch object touching the touch screen is touched on the touch sensor. Here, the touch object may be a finger, a touch pen, a stylus pen, a pointer, or the like as an object to which a touch is applied to the touch sensor.

Thus, when 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. Thus, the control unit 180 can know which area of the display unit 151 is touched or the like. Here, the touch controller may be a separate component from the control unit 180, and may be the control unit 180 itself.

On the other hand, the control unit 180 may perform different controls or perform the same control according to the type of the touch object touching the touch screen (or a touch key provided on the touch screen). Whether to perform different controls or to perform the same control according to the type of the touch object may be determined according to the current state of the mobile terminal 100 or an application program being executed.

On the other hand, the touch sensors and the proximity sensors discussed above can be used independently or in combination to provide a short touch (touch), a long touch, a multi touch, a drag touch ), Flick touch, pinch-in touch, pinch-out touch, swipe touch, hovering touch, and the like. Touch can be sensed.

The ultrasonic sensor can recognize the position information of the object to be sensed by using ultrasonic waves. Meanwhile, the controller 180 can calculate the position of the wave generating source through the information sensed by the optical sensor and the plurality of ultrasonic sensors. The position of the wave source can be calculated using the fact that the light is much faster than the ultrasonic wave, that is, the time when the light reaches the optical sensor is much faster than the time the ultrasonic wave reaches the ultrasonic sensor. More specifically, the position of the wave generating source can be calculated using the time difference with the time when the ultrasonic wave reaches the reference signal.

The camera 121 includes at least one of a camera sensor (for example, a CCD, a CMOS, etc.), a photo sensor (or an image sensor), and a laser sensor.

The camera 121 and the laser sensor may be combined with each other to sense a touch of the sensing object with respect to the three-dimensional stereoscopic image. The photosensor can be laminated to the display element, which is adapted to scan the movement of the object to be detected proximate to the touch screen. More specifically, the photosensor mounts photo diodes and TRs (Transistors) in a row / column and scans the contents loaded on the photosensor using an electrical signal that varies according to the amount of light applied to the photo diode. That is, the photo sensor performs coordinate calculation of the object to be sensed according to the amount of change of light, and position information of the object to be sensed can be obtained through the calculation.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, the display unit 151 may display execution screen information of an application program driven by the mobile terminal 100 or UI (User Interface) and GUI (Graphic User Interface) information according to the execution screen information .

In addition, the display unit 151 may be configured as a stereoscopic display unit for displaying a stereoscopic image.

In the stereoscopic display unit, a three-dimensional display system such as a stereoscopic system (glasses system), an autostereoscopic system (no-glasses system), and a projection system (holographic system) can be applied.

The sound output unit 152 may output audio data received from the wireless communication unit 110 or stored in the memory 170 in a call signal reception mode, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, The sound output unit 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 unit 152 may include a receiver, a speaker, a buzzer, and the like.

The haptic module 153 generates various tactile effects that the user can feel. A typical example of the haptic effect generated by the haptic module 153 may be vibration. The intensity and pattern of the vibration generated in the haptic module 153 can be controlled by the user's selection or the setting of the control unit. For example, the haptic module 153 may synthesize and output different vibrations or sequentially output the vibrations.

In addition to vibration, the haptic module 153 may be configured to perform various functions such as a pin arrangement vertically moving with respect to the contact skin surface, a spraying force or suction force of the air through the injection port or the suction port, a touch on the skin surface, And various tactile effects such as an effect of reproducing a cold sensation using an endothermic or exothermic element can be generated.

The haptic module 153 can transmit the tactile effect through the direct contact, and the tactile effect can be felt by the user through the muscles of the finger or arm. The haptic module 153 may include two or more haptic modules 153 according to the configuration of the mobile terminal 100.

The light output unit 154 outputs a signal for notifying the occurrence of an event using the light of the light source of the mobile terminal 100. Examples of events that occur in the mobile terminal 100 may include message reception, call signal reception, missed call, alarm, schedule notification, email reception, information reception through an application, and the like.

The signal output from the light output unit 154 is implemented as the mobile terminal emits light of a single color or a plurality of colors to the front or rear surface. The signal output may be terminated by the mobile terminal detecting the event confirmation of the user.

The interface unit 160 serves as a path for communication with all external devices connected to the mobile terminal 100. The interface unit 160 receives data from an external device or supplies power to each component in the mobile terminal 100 or transmits data in the mobile terminal 100 to an external device. For example, a port for connecting a device equipped with a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, an audio I / O port, a video I / O port, an earphone port, and the like may be included in the interface unit 160.

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 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 interface unit 160. [

The interface unit 160 may be a path through which power from the cradle is supplied to the mobile terminal 100 when the mobile terminal 100 is connected to an external cradle, And various command signals may be transmitted to the mobile terminal 100. The various command signals or the power source input from the cradle may be operated as a signal for recognizing that the mobile terminal 100 is correctly mounted on the cradle.

The memory 170 may store a program for the operation of the controller 180 and temporarily store input / output data (e.g., phone book, message, still image, moving picture, etc.). The memory 170 may store data related to vibration and sound of various patterns outputted when a touch is input on the touch screen.

The memory 170 may be a flash memory type, a hard disk type, a solid state disk type, an SDD type (Silicon Disk Drive type), a multimedia card micro type ), Card type memory (e.g., SD or XD memory), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read memory, a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, and / or an optical disk. The mobile terminal 100 may operate in association with a web storage that performs the storage function of the memory 170 on the Internet.

Meanwhile, as described above, the control unit 180 controls the operations related to the application program and the general operation of the mobile terminal 100. [ For example, when the state of the mobile terminal meets a set condition, the control unit 180 can execute or release a lock state for restricting input of a user's control command to applications.

In addition, the control unit 180 performs control and processing related to voice communication, data communication, video call, or the like, or performs pattern recognition processing to recognize handwriting input or drawing input performed on the touch screen as characters and images, respectively . Further, the controller 180 may control any one or a plurality of the above-described components in order to implement various embodiments described below on the mobile terminal 100 according to the present invention.

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 power supply unit 190 includes a battery, the battery may be an internal battery configured to be chargeable, and may be detachably coupled to the terminal body for charging or the like.

In addition, the power supply unit 190 may include a connection port, and the connection port may be configured as an example of an interface 160 through which an external charger for supplying power for charging the battery is electrically connected.

As another example, the power supply unit 190 may be configured to charge the battery in a wireless manner without using the connection port. In this case, the power supply unit 190 may use at least one of an inductive coupling method based on a magnetic induction phenomenon from an external wireless power transmission apparatus and a magnetic resonance coupling method based on an electromagnetic resonance phenomenon Power can be delivered.

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

Referring to FIGS. 1B and 1C, the disclosed mobile terminal 100 includes a bar-shaped terminal body. However, the present invention is not limited thereto and can be applied to various structures such as a folder type, a flip type, a slide type, a swing type, and a swivel type in which a watch type, a clip type, a glass type or two or more bodies are relatively movably coupled . A description of a particular type of mobile terminal, although relevant to a particular type of mobile terminal, is generally applicable to other types of mobile terminals.

Here, the terminal body can be understood as a concept of referring to the mobile terminal 100 as at least one aggregate.

The mobile terminal 100 includes a case (for example, a frame, a housing, a cover, and the like) that forms an appearance. As shown, the mobile terminal 100 may include a front case 101 and a rear case 102. Various electronic components are disposed in the inner space formed by the combination of the front case 101 and the rear case 102. At least one middle case may be additionally disposed between the front case 101 and the rear case 102.

A display unit 151 is disposed on a front surface of the terminal body to output information. The window 151a of the display unit 151 may be mounted on the front case 101 to form a front surface of the terminal body together with the front case 101. [

In some cases, electronic components may also be mounted on the rear case 102. Electronic parts that can be mounted on the rear case 102 include detachable batteries, an identification module, a memory card, and the like. In this case, a rear cover 103 for covering the mounted electronic components can be detachably coupled to the rear case 102. Therefore, when the rear cover 103 is separated from the rear case 102, the electronic parts mounted on the rear case 102 are exposed to the outside.

As shown, when the rear cover 103 is coupled to the rear case 102, a side portion of the rear case 102 can be exposed. In some cases, the rear case 102 may be completely covered by the rear cover 103 during the engagement. Meanwhile, the rear cover 103 may be provided with an opening for exposing the camera 121b and the sound output unit 152b to the outside.

These cases 101, 102, and 103 may be formed by injection molding of synthetic resin or may be formed of metal such as stainless steel (STS), aluminum (Al), titanium (Ti), or the like.

The mobile terminal 100 may be configured such that one case provides the internal space, unlike the above example in which a plurality of cases provide an internal space for accommodating various electronic components. In this case, a unibody mobile terminal 100 in which synthetic resin or metal is connected from the side to the rear side can be realized.

Meanwhile, the mobile terminal 100 may include a waterproof unit (not shown) for preventing water from penetrating into the terminal body. For example, the waterproof portion is provided between the window 151a and the front case 101, between the front case 101 and the rear case 102, or between the rear case 102 and the rear cover 103, And a waterproof member for sealing the inside space of the oven.

The mobile terminal 100 is provided with a display unit 151, first and second sound output units 152a and 152b, a proximity sensor 141, an illuminance sensor 142, a light output unit 154, Cameras 121a and 121b, first and second operation units 123a and 123b, a microphone 122, an interface unit 160, and the like.

1B and 1C, a display unit 151, a first sound output unit 152a, a proximity sensor 141, an illuminance sensor 142, an optical output unit (not shown) A second operation unit 123b, a microphone 122 and an interface unit 160 are disposed on a side surface of the terminal body, And a mobile terminal 100 having a second sound output unit 152b and a second camera 121b disposed on a rear surface thereof.

However, these configurations are not limited to this arrangement. These configurations may be excluded or replaced as needed, or placed on different planes. For example, the first operation unit 123a may not be provided on the front surface of the terminal body, and the second sound output unit 152b may be provided on the side surface of the terminal body rather than the rear surface of the terminal body.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, the display unit 151 may display execution screen information of an application program driven by the mobile terminal 100 or UI (User Interface) and GUI (Graphic User Interface) information according to the execution screen information .

The display unit 151 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 display, a 3D display, and an e-ink display.

In addition, the display unit 151 may exist in two or more depending on the embodiment of the mobile terminal 100. In this case, the mobile terminal 100 may be provided with a plurality of display portions spaced apart from each other or disposed integrally with one another, or may be disposed on different surfaces, respectively.

The display unit 151 may include a touch sensor that senses a touch with respect to the display unit 151 so that a control command can be received by a touch method. When a touch is made to the display unit 151, the touch sensor senses the touch, and the control unit 180 generates a control command corresponding to the touch based on the touch. The content input by the touch method may be a letter or a number, an instruction in various modes, a menu item which can be designated, and the like.

The touch sensor may be a film having a touch pattern and disposed between the window 151a and a display (not shown) on the rear surface of the window 151a, or may be a metal wire . Alternatively, the touch sensor may be formed integrally with the display. For example, the touch sensor may be disposed on a substrate of the display or inside the display.

In this way, the display unit 151 can form a touch screen together with the touch sensor. In this case, the touch screen can function as a user input unit 123 (see FIG. 1A). In some cases, the touch screen may replace at least some functions of the first operation unit 123a.

The first sound output unit 152a may be implemented as a receiver for transmitting a call sound to a user's ear and the second sound output unit 152b may be implemented as a loud speaker for outputting various alarm sounds or multimedia playback sounds. ). ≪ / RTI >

The window 151a of the display unit 151 may be provided with an acoustic hole for emitting the sound generated from the first acoustic output unit 152a. However, the present invention is not limited to this, and the sound may be configured to be emitted along an assembly gap (for example, a gap between the window 151a and the front case 101) between the structures. In this case, the appearance of the mobile terminal 100 can be simplified because the holes that are formed independently for the apparent acoustic output are hidden or hidden.

The optical output unit 154 is configured to output light for notifying the occurrence of an event. Examples of the event include a message reception, a call signal reception, a missed call, an alarm, a schedule notification, an email reception, and reception of information through an application. The control unit 180 may control the light output unit 154 to terminate the light output when the event confirmation of the user is detected.

The first camera 121a processes an image frame of a still image or a moving image obtained by the image sensor in the photographing mode or the video communication mode. The processed image frame can be displayed on the display unit 151 and can be stored in the memory 170. [

The first and second operation units 123a and 123b may be collectively referred to as a manipulating portion as an example of a user input unit 123 operated to receive a command for controlling the operation of the mobile terminal 100 have. The first and second operation units 123a and 123b can be employed in any manner as long as the user is in a tactile manner such as touch, push, scroll, or the like. In addition, the first and second operation units 123a and 123b may be employed in a manner that the user operates the apparatus without touching the user through a proximity touch, a hovering touch, or the like.

In this figure, the first operation unit 123a is a touch key, but the present invention is not limited thereto. For example, the first operation unit 123a may be a mechanical key, or a combination of a touch key and a touch key.

The contents input by the first and second operation units 123a and 123b can be variously set. For example, the first operation unit 123a receives a command such as a menu, a home key, a cancellation, a search, and the like, and the second operation unit 123b receives a command from the first or second sound output unit 152a or 152b The size of the sound, and the change of the display unit 151 to the touch recognition mode.

On the other hand, a rear input unit (not shown) may be provided on the rear surface of the terminal body as another example of the user input unit 123. The rear input unit is operated to receive a command for controlling the operation of the mobile terminal 100, and input contents may be variously set. For example, commands such as power on / off, start, end, scrolling, and the like, the size adjustment of the sound output from the first and second sound output units 152a and 152b, And the like can be inputted. The rear input unit may be implemented as a touch input, a push input, or a combination thereof.

The rear input unit may be disposed so as to overlap with the front display unit 151 in the thickness direction of the terminal body. For example, the rear input unit may be disposed at the rear upper end of the terminal body such that when the user holds the terminal body with one hand, the rear input unit can be easily operated using the index finger. However, the present invention is not limited thereto, and the position of the rear input unit may be changed.

When a rear input unit is provided on the rear surface of the terminal body, a new type of user interface using the rear input unit can be realized. When the first operation unit 123a is not disposed on the front surface of the terminal body in place of at least a part of the functions of the first operation unit 123a provided on the front surface of the terminal body, The display unit 151 may be configured as a larger screen.

Meanwhile, the mobile terminal 100 may be provided with a fingerprint recognition sensor for recognizing the fingerprint of the user, and the controller 180 may use the fingerprint information sensed through the fingerprint recognition sensor as authentication means. The fingerprint recognition sensor may be embedded in the display unit 151 or the user input unit 123.

The microphone 122 is configured to receive the user's voice, other sounds, and the like. The microphone 122 may be provided at a plurality of locations to receive stereophonic sound.

The interface unit 160 is a path through which the mobile terminal 100 can be connected to an external device. For example, the interface unit 160 may include a connection terminal for connection with another device (for example, an earphone or an external speaker), a port for short-range communication (for example, an infrared port (IrDA Port), a Bluetooth port A wireless LAN port, or the like), or a power supply terminal for supplying power to the mobile terminal 100. The interface unit 160 may be implemented as a socket for receiving an external card such as a SIM (Subscriber Identification Module) or a UIM (User Identity Module) or a memory card for storing information.

And a second camera 121b may be disposed on a rear surface of the terminal body. In this case, the second camera 121b has a photographing direction which is substantially opposite to that of the first camera 121a.

The second camera 121b may include a plurality of lenses arranged along at least one line. The plurality of lenses may be arranged in a matrix form. Such a camera can be named an 'array camera'. When the second camera 121b is configured as an array camera, images can be taken in various ways using a plurality of lenses, and a better quality image can be obtained.

The flash 124 may be disposed adjacent to the second camera 121b. The flash 124 shines light toward the subject when the subject is photographed by the second camera 121b.

And a second sound output unit 152b may be additionally disposed in the terminal body. The second sound output unit 152b may implement a stereo function together with the first sound output unit 152a and may be used for implementing a speakerphone mode in a call.

The terminal body may be provided with at least one antenna for wireless communication. The antenna may be embedded in the terminal body or formed in the case. For example, an antenna constituting a part of the broadcast receiving module 111 (see FIG. 1A) may be configured to be able to be drawn out from the terminal body. Alternatively, the antenna may be formed in a film type and attached to the inner surface of the rear cover 103, or a case including a conductive material may be configured to function as an antenna.

The terminal body is provided with a power supply unit 190 (see FIG. 1A) for supplying power to the mobile terminal 100. The power supply unit 190 may include a battery 191 built in the terminal body or detachable from the outside of the terminal body.

The battery 191 may be configured to receive power through a power cable connected to the interface unit 160. In addition, the battery 191 may be configured to be wirelessly chargeable through a wireless charger. The wireless charging may be implemented by a magnetic induction method or a resonance method (magnetic resonance method).

The rear cover 103 is coupled to the rear case 102 so as to cover the battery 191 to restrict the release of the battery 191 and to protect the battery 191 from external impact and foreign matter . When the battery 191 is detachably attached to the terminal body, the rear cover 103 may be detachably coupled to the rear case 102.

The mobile terminal 100 may be provided with an accessory that protects the appearance or supports or expands the function of the mobile terminal 100. [ One example of such an accessory is a cover or pouch that covers or accommodates at least one side of the mobile terminal 100. [ The cover or pouch may be configured to interlock with the display unit 151 to expand the function of the mobile terminal 100. Another example of an accessory is a touch pen for supplementing or extending a touch input to the touch screen.

In the foregoing, the configuration of the mobile terminal 100 according to the present invention has been described with reference to FIGS. 1A to 1C. Hereinafter, a mobile terminal capable of providing different screens according to a viewing direction of a display unit according to a preferred embodiment of the present invention and a control method thereof will be described in detail.

Before describing the present invention in detail, the structure and operation of a multi view display and a veil view display capable of providing different screens according to the viewing direction of the display unit are briefly described Let's take a look.

Figures 2 and 3 are diagrams that are referenced to illustrate a multi-view display for use in a mobile terminal according to various embodiments of the present invention. In FIGS. 2 and 3, a multi-view display capable of displaying different screens in three display directions will be described as an example.

Figure 2 (a) shows a typical display. As shown in FIG. 2 (a), a general display can see only the same screen even if the viewing angles of the users 10A, 10B, and 10C are changed.

On the other hand, a multi-view display is provided with a filter that can limit the viewing angle for each pixel on the surface, and as shown in FIG. 2 (b) It is possible to provide different screens according to the change of the viewing angle. For example, the users 11A, 11B, and 11C can see different screens in the front viewing angle area a, the left viewing angle area b, and the right viewing angle area c, respectively.

3 shows an example of the configuration of the multi-view display unit. 3, the multi-view display unit includes a lower plate 10, an upper plate 30, and a liquid crystal layer 18 formed between the lower plate 10 and the upper plate 30. The upper plate 30 includes a mask filter 22, a light blocking wall 24 and a color filter array 28. The mask filter 22 is arranged such that the blocking pattern 21 and the transmitting portion 23 alternate with each other, .

With this configuration, when viewing the display portion 151 in the front viewing angle region (a), the blocking pattern 21 shields the light from the second and third pixel regions P2 and P3, ) Transmits light from the first pixel region P1. Thus, the screen displayed in the first pixel area P1 is displayed in the first display direction.

The shielding pattern 21 shields the light from the first and third pixel regions P1 and P3 and the transmissive portion 23 shields the light from the first pixel region P1 and the third pixel region P1 when the display portion 151 is viewed in the left viewing angle region b. (P2). Thus, the screen displayed in the second pixel area P2 is displayed in the second display direction.

Similarly, when viewing the display portion 151 in the right viewing angle region c, the blocking pattern blocks light from the first and second pixel regions P1 and P2, and the transmissive portion 23 blocks the light from the third pixel region P3. Thus, the screen displayed in the third pixel region P3 is displayed in the third display direction.

As described above, the multi-view display unit can display different screens in the first display direction (1), the second display direction (2), and the third display direction (3). In another embodiment, the multi-view display unit displays the first screen in the first display direction (1) and displays the second screen different from the first screen in the second and third display directions (2, 3) You may. Therefore, the user of the mobile terminal can normally view the first screen displayed in the first display direction (1), and the people around the mobile terminal are displayed in the second and third display directions (2, 3) The second screen can be seen.

Figure 4 is a diagram referred to illustrate a veil view display used in a mobile terminal according to various embodiments of the present invention.

Referring to FIG. 4, the bailview display unit may provide a separate switch liquid crystal 50 in a liquid crystal panel (not shown) to provide different screens according to the positions of the user and the surrounding persons. For example, the user of the mobile terminal 100 can view a normal operation screen in the front viewing angle direction (1), while the user around the user sees an abnormal screen in the left / right viewing angle directions (2, 3).

That is, the veil view display unit changes the arrangement or direction of the switch liquid crystal molecules through voltage or current control, and adjusts the viewing angle by changing the traveling direction of light emitted from the backlight. The brightness reduction portion due to the switch liquid crystal can increase the brightness of the backlight and secure a general level of brightness.

4, when the user views the display portion 151 in the front viewing angle direction (1), the bale view display portion displays the direction of the light emitted from the backlight while keeping the arrangement and direction of the switch liquid crystal molecules intact It does not change. Therefore, in the front viewing angle direction (1), the user of the mobile terminal can see a normal screen outputted from the display unit 151. [

On the other hand, when the surrounding people view the display unit 151 in the left / right viewing angle directions (2, 3), the veil view display unit changes the arrangement or direction of the switch liquid crystal molecules through voltage or current control, Change the direction of light. Therefore, in the left / right viewing angle directions (2, 3), the surrounding people can not see the normal screen outputted from the display unit. At this time, the surrounding people can see a preset logo screen or a notification screen instead of a normal screen, or an operation screen which is processed so that the contents of a normal operation screen can not be identified.

It will be apparent to those skilled in the art that other types of display units capable of outputting different screens according to the direction of the eyes of the user and the surrounding people may be employed in the present invention, in addition to the multi-view display unit and the veil view display unit.

5 is a flowchart illustrating an operation of the mobile terminal according to the first embodiment of the present invention.

Referring to FIG. 5, the control unit 180 determines whether a screen protection function is selected according to a user command or the like (S510). Here, the screen protection function refers to a function of a mobile terminal that outputs a normal screen in the front view angle direction and outputs an abnormal screen (or a protected screen) in the side viewing angle direction, in order to protect personal information and privacy of the terminal user.

If the screen protection function is selected through the setting menu or the like, the controller 180 activates the first camera 121a disposed on the front surface of the terminal body (S520).

The control unit 180 performs gaze tracking using the user image acquired through the activated first camera 121a (S530). Here, eye-tracking is a technique for tracking a user's gaze position by recognizing a user's pupil according to a result of analyzing images input through a camera. The gaze position of the user can be grasped in real time by using the gaze tracking.

In step S540, the control unit 180 determines whether the user's gaze is facing the front of the display unit 151 according to the result of performing the gaze tracking in step S530.

If it is determined in step 540 that there is a user's gaze facing the front, the control unit 180 automatically performs the screen protection function (step S550). At this time, the controller 180 may provide a predetermined haptic effect or an alarm effect to inform the user of the execution of the screen protection function.

When the screen protection function is executed, the control unit 180 provides the first operation screen, which is previously executed according to a user command or the like, in the front view angle direction (S560). At the same time, the control unit 180 provides a second operation screen, which is different from the first operation screen, in the direction of the side view angle so that nearby people can not see the first operation screen (S570). At this time, the control unit 180 may provide different screens according to the line of sight of the user and the surrounding people by using the multi-view display, the veil view display, or the like.

The second operation screen provided in the side view angle direction may be an operation screen which is irrelevant to the user's own personal information and privacy, and may be set by default by the manufacturer or may be an operation screen directly selected by the user. For example, as shown in FIG. 18, a time information screen 1810, a warning screen 1820, a YouTube screen 1830, or the like may be provided as an example of the second operation screen. In addition, the second operation screen may be provided with a logo screen, a notification screen, a standby screen, or a black screen.

The second operation screen provided in the side viewing angle direction may be an operation screen in which the first operation screen is modified so that the surrounding people can not identify the contents of the first operation screen in the side viewing angle direction.

If it is determined in step 540 that the user does not have a line of sight facing the front of the display unit 151, the control unit 180 may display the screen of the display unit 151 in a non- The power can be turned off (S580).

According to another embodiment, the controller 180 may detect the display area corresponding to the user's gaze position, which is facing the front of the display unit 151, according to the result of performing the gaze-tracking in step 530. [ Accordingly, the control unit 180 can display only the display area where the user's line of sight is located, so as to be clearly visible in the front viewing angle direction, and display the other remaining area so that it is not visible in all viewing angle directions.

Thereafter, if the screen protection function is not released through the setting menu or the like (S590), the control unit 180 repeatedly performs steps 520 through 580 described above. On the other hand, if the screen protection function is released through the setting menu or the like, the control unit 180 terminates the process according to the embodiment of the present invention.

On the other hand, when eye tracking is used, power consumption is relatively high because a camera that recognizes an image other than a simple sensor must be operated. Accordingly, if the camera is operated at regular intervals and the image is photographed, if there is a human face in the captured image, the camera is continuously operated. If the human face disappears, the camera operation is stopped, Can be reduced. At this time, the period for operating the camera can be made gradually longer from the first N seconds to Nx (2 + 0) seconds and Nx (2 + 1).

Using the light sensor and the proximity sensor, the camera can be operated only when the object is close to a certain distance or less by the proximity sensor, and the camera can be operated only when the light intensity sensor has a certain illuminance and the sight line tracking is possible.

6 and 7 are diagrams for explaining the operation of the mobile terminal according to the first embodiment of the present invention.

6, when a screen protection function is selected according to a user command or the like, the mobile terminal 100 activates the first camera 121a disposed on the front side of the terminal body, and activates the activated first camera 121a Eye tracking is performed using the user image acquired through the user.

6 (a), if there is a line of sight of the user looking at the front of the display unit 151, the mobile terminal 100 automatically executes the screen protection function.

That is, the mobile terminal 100 may provide a first operation screen 610 desired by the user in a front view angle direction and a second operation screen 620 different from the first operation screen in a side view angle direction . At this time, the second operation screen 620 may be a black screen.

6 (b), if there is no line of sight of the user looking at the front of the display unit 151, the mobile terminal 100 displays the display unit 151 in all directions The display unit 151 can be turned off or the display unit 151 can be turned off.

7, when the screen protection function is selected according to a user command or the like, the mobile terminal 100 activates the first camera 121a disposed on the front side of the terminal body, And performs gaze tracking using a user image acquired through the activated first camera 121a.

As shown in FIG. 7 (a), the mobile terminal 100 may detect a display area corresponding to a user's gaze position, which is facing the front of the display unit 151. Accordingly, the mobile terminal 100 can display only the display area 710 in which the user's line of sight is located, so as to be clearly visible in the front viewing angle direction, and display the rest of the area in the direction of all viewing angles.

7 (b), when the user's gaze moves, the mobile terminal 100 displays only the display area 720 corresponding to the moved gaze position in the front view angle direction And the rest of the remaining area can be displayed so as not to be seen clearly in all the viewing angle directions.

FIG. 8 is a flowchart illustrating the operation of the mobile terminal according to the second embodiment of the present invention.

Referring to FIG. 8, the controller 180 determines whether a screen protection function is selected according to a user command or the like (S810).

If the screen protection function is selected through the setting menu or the like, the controller 180 activates the first camera 121a disposed at the front of the terminal body (S820).

The control unit 180 determines whether a screen protection automatic execution event (hereinafter referred to as an 'automatic execution event') is detected using the activated first camera 121a (S830). At this time, the automatic execution event is an event in which the screen protection function is automatically executed, and is an event in which a face of the user is detected within a predetermined distance from the display unit, an event in which two or more persons are detected within the angle of view of the camera, An event in which a person other than the user is detected in the viewing angle area, or the like.

If it is determined in step 830 that an automatic execution event is detected, the control unit 180 automatically executes the screen protection function (step S840). At this time, the controller 180 may provide a first haptic effect or a first alarm effect to inform the user of the automatic execution of the screen protection function.

When the screen protection function is executed, the control unit 180 provides the first operation screen, which is previously executed according to a user command or the like, in the front view angle direction (S850). At the same time, the control unit 180 provides a second operation screen, which is different from the first operation screen, in the side view angle direction so that the surrounding people can not see the first operation screen (S860). At this time, the control unit 180 may provide different screens according to the line of sight of the user and the surrounding people by using the multi-view display, the veil view display, or the like.

The second operation screen provided in the side view angle direction may be an operation screen which is irrelevant to the user's own personal information and privacy, and may be set by default by the manufacturer or may be an operation screen directly selected by the user. For example, as shown in FIG. 18, a time information screen 1810, a warning screen 1820, a YouTube screen 1830, or the like may be provided as an example of the second operation screen. In addition, the second operation screen may be provided with a logo screen, a notification screen, a standby screen, or a black screen.

The second operation screen provided in the side viewing angle direction may be an operation screen in which the first operation screen is modified so that the surrounding people can not identify the contents of the first operation screen in the side viewing angle direction.

While the detected automatic execution event is held (S870), the controller 180 repeatedly performs the operations of steps 840 to 860 described above. When the automatic execution event is canceled, the mobile terminal 100 ends execution of the screen protection function. At this time, the mobile terminal 100 may provide a second haptic effect different from the first haptic effect to inform the user of the end of execution of the screen protection function. Alternatively, the mobile terminal 100 may provide a second alarm effect different from the first alarm effect.

On the other hand, if it is determined in step 830 that the automatic execution event is not detected, the controller 180 outputs the first operation screen in a normal manner so that the display unit can be easily seen in all viewing angles (S880).

Thereafter, if the screen protection function is not released through the setting menu or the like (S890), the control unit 180 repeatedly performs the steps 820 to 880 described above. On the other hand, if the screen protection function is released through the setting menu or the like, the control unit 180 terminates the process according to the embodiment of the present invention.

FIG. 9 and FIG. 10 are views referred to explain the operation of the mobile terminal according to the second embodiment of the present invention.

9, when a screen protection function is selected according to a user command or the like, the mobile terminal 100 activates the first camera 121a disposed on the front side of the terminal body, and uses the activated camera 121a The distance between the user and the display unit 151 is measured.

9 (a), when the user's face or the like is detected within a certain distance from the display unit 151, the mobile terminal 100 is a screen that the user wants to view only by himself / herself And the screen protection function is executed automatically.

That is, the mobile terminal 100 provides the first operation screen 910, which is previously executed according to a user command or the like, in the front view angle direction and the second operation screen 920, which is different from the first operation screen 910, It can be provided in the viewing angle direction. At this time, the second operation screen 920 may be a black screen.

9 (b), when the user's face or the like is not detected within a predetermined distance from the display unit 151, the mobile terminal 100 displays the display in all the viewing angle directions And outputs the first operation screens 930 and 940 in a normal manner so that the unit 151 can be seen clearly.

10, when the screen protection function is selected according to a user command or the like, the mobile terminal 100 activates the first camera 121a disposed on the front surface of the terminal body, And recognizes an object existing within the angle of view of the camera using the activated camera 121a.

As shown in FIG. 10A, when two or more surrounding persons are detected within the camera viewing angle, the mobile terminal 100 regards a plurality of people as being present around the user, The function is executed automatically.

That is, the mobile terminal 100 may provide the operation screen 1010, which is previously executed according to a user command or the like, in the front view angle direction and may restrict the viewing angle so that the operation screen 1010 can not be seen clearly in the side viewing angle direction. At this time, the mobile terminal 100 may dim the operation screen 1020 in the side view angle direction.

On the other hand, if the number of persons detected in the camera angle of view increases gradually as shown in FIG. 10B, the mobile terminal 100 regards the necessity of screen protection to increase gradually Screen protection function can be enhanced.

That is, the mobile terminal 100 can restrict the viewing angle so that the first operation screen 1030 can not be seen even if the direction of the user's sight is slightly deviated in the left / right direction with respect to the front of the display unit. In addition, the mobile terminal 100 may provide a second operation screen 1040, which is different from the first operation screen 1030, in a side view angle direction. At this time, the second operation screen 1040 may be a black screen.

11 is a flowchart illustrating an operation of the mobile terminal according to the third embodiment of the present invention.

Referring to FIG. 11, the controller 180 determines whether a screen protection function is selected according to a user command or the like (S1110).

If the screen protection function is selected through the setting menu or the like, the controller 180 activates the GPS module (S1120).

The control unit 180 determines whether a screen-protection automatic execution event (hereinafter referred to as an "automatic execution event") is detected using the activated GPS module (S1130). At this time, the automatic execution event is an event in which the screen protection function is automatically executed, and may be an event in which the current position of the mobile terminal is detected in a public place where many people exist.

If it is determined in step 1130 that an automatic execution event is detected, the control unit 180 automatically executes the screen protection function (S1140). At this time, the controller 180 may provide a first haptic effect or a first alarm effect to inform the user of the automatic execution of the screen protection function.

When the screen protection function is executed, the control unit 180 provides the first operation screen, which is previously executed according to a user command or the like, in the front view angle direction (S1150). At the same time, the control unit 180 provides a second operation screen, which is different from the first operation screen, in a side view angle direction so that nearby people can not see the first operation screen (S1160).

The second operation screen provided in the side view angle direction may be an operation screen which is irrelevant to the user's own personal information and privacy, and may be set by default by the manufacturer or may be an operation screen directly selected by the user. For example, as shown in FIG. 18, a time information screen 1810, a warning screen 1820, a YouTube screen 1830, or the like may be provided as an example of the second operation screen. In addition, the second operation screen may be provided with a logo screen, a notification screen, a standby screen, or a black screen.

The second operation screen provided in the side viewing angle direction may be an operation screen in which the first operation screen is modified so that the surrounding people can not identify the contents of the first operation screen in the side viewing angle direction.

While the detected automatic execution event is held (S1170), the controller 180 repeatedly performs the operations of steps 1140 to 1160 described above. When the automatic execution event is canceled, the mobile terminal 100 ends execution of the screen protection function. At this time, the mobile terminal 100 may provide a second haptic effect different from the first haptic effect to inform the user of the end of execution of the screen protection function. Alternatively, the mobile terminal 100 may provide a second alarm effect different from the first alarm effect.

On the other hand, if it is determined in step 1130 that the automatic execution event is not detected, the controller 180 outputs the first operation screen in a normal manner so that the display unit can be easily seen in all viewing angles (S1180).

Thereafter, if the screen protection function is not released through the setting menu or the like (S1190), the control unit 180 repeatedly performs the steps 1120 to 1180 described above. On the other hand, if the screen protection function is released through the setting menu or the like, the control unit 180 terminates the process according to the embodiment of the present invention.

12 is a diagram for explaining the operation of the mobile terminal according to the third embodiment of the present invention.

Referring to FIG. 12, when a screen protection function is selected according to a user command or the like, the mobile terminal 100 activates the GPS module and periodically detects the current position of the user using the activated GPS module.

As a result of the position detection, when the current position of the user is a public place with many people, the mobile terminal 100 automatically assumes that the risk of exposure of personal information or privacy is increased, and automatically executes the screen protection function.

That is, the mobile terminal 100 provides the first operation screen 1210, which is previously executed according to a user command or the like, in the front view angle direction and the second operation screen 1220, which is different from the first operation screen 1210, It can be provided in the viewing angle direction. At this time, the second operation screen 1220 may be a black screen.

On the other hand, if the user is out of a public place with a large number of people, the mobile terminal 100 displays a first operation screen (not shown) in a normal manner so that the display unit 151 can be seen in all viewing angles Output.

13 is a flowchart illustrating an operation of the mobile terminal according to the fourth embodiment of the present invention.

Referring to FIG. 13, the controller 180 determines whether a screen protection function is selected according to a user command or the like (S1310).

In a state where the screen protection function is selected through a setting menu or the like, the control unit 180 executes a specific application according to a user command or the like (S1320). At this time, the controller 180 checks whether the executed application is an application preset to automatically execute the screen protection function (S1330).

If it is determined in operation 1330 that the screen protection function is an automatic execution of the application, the control unit 180 automatically executes the screen protection function at the same time as executing the specific application (S1340). At this time, the controller 180 may provide a first haptic effect or a first alarm effect to inform the user of the automatic execution of the screen protection function.

When the screen protection function is executed, the control unit 180 provides the first operation screen, which is previously executed according to a user command or the like, in the front view angle direction (S1350). At the same time, the control unit 180 provides a second operation screen, which is different from the first operation screen, in the direction of the side view angle so that nearby people can not see the first operation screen (S1360). At this time, the control unit 180 may provide different screens according to the line of sight of the user and the surrounding people by using the multi-view display, the veil view display, or the like.

The second operation screen provided in the side view angle direction may be an operation screen which is irrelevant to the user's own personal information and privacy, and may be set by default by the manufacturer or may be an operation screen directly selected by the user. For example, as shown in FIG. 18, a time information screen 1810, a warning screen 1820, a YouTube screen 1830, or the like may be provided as an example of the second operation screen. In addition, the second operation screen may be provided with a logo screen, a notification screen, a standby screen, or a black screen.

The second operation screen provided in the side viewing angle direction may be an operation screen in which the first operation screen is modified so that the surrounding people can not identify the contents of the first operation screen in the side viewing angle direction.

During the execution of the specific application (S1370), the controller 180 repeatedly performs the operations of steps 1340 to 1360 described above. When the execution of the specific application is terminated, the mobile terminal 100 ends execution of the screen protection function. At this time, the mobile terminal 100 may provide a second haptic effect different from the first haptic effect to inform the user of the end of execution of the screen protection function. Alternatively, the mobile terminal 100 may provide a second alarm effect different from the first alarm effect.

On the other hand, if it is determined in step 1330 that the screen protection function is not an automatically executed application, the controller 180 outputs the first operation screen in a normal manner so that the display unit can be easily seen in all viewing angles (S1380).

Thereafter, if the screen protection function is not released through the setting menu or the like (S1390), the control unit 180 repeatedly performs steps 1320 to 1380 described above. On the other hand, if the screen protection function is released through the setting menu or the like, the control unit 180 terminates the process according to the embodiment of the present invention.

14 to 16 are diagrams for explaining the operation of the mobile terminal according to the fourth embodiment of the present invention.

Referring to FIG. 14A, the mobile terminal 100 displays a screen setting screen 1410 on the display unit 151 according to a user command or the like. At this time, the screen setting screen 1410 includes a home screen setting menu, a lock screen setting menu, a brightness setting menu, and a screen protection setting menu.

When the screen protection function setting menu 1420 is selected on the screen setting screen 1415, as shown in FIG. 14 (b), the mobile terminal 100 displays an application And displays the selection screen 1420 on the display unit 151. [ Accordingly, the user of the mobile terminal 100 can preliminarily select an application to be automatically activated by the screen protection function through the application selection screen 1420.

Referring to FIG. 15, when the screen protection function is selected through a setting menu or the like, the mobile terminal 100 executes an application related to the banking service according to a user command or the like. At this time, it is assumed that the application related to the banking service is a preset application that automatically executes the screen protection function.

As shown in FIG. 15A, when an app relating to the banking service is executed, the mobile terminal 100 automatically assumes that the user views important information and executes the screen protection function automatically.

That is, the mobile terminal 100 provides the execution screen 1510 of the application related to the banking work in the front view angle direction so that only the user can view it, and at the same time, A screen 1520 different from the screen 1510 can be provided in the side viewing angle direction. At this time, the screen 1520 provided in the side viewing angle direction may be a black screen.

15 (b), when the execution of the application related to the banking service is terminated, the mobile terminal 100 operates in a normal manner so that the display unit 151 can be seen clearly in all the viewing angle directions And outputs the screens 1530 and 1540.

16, when the screen protection function is selected through the setting menu or the like, the mobile terminal 100 executes the gallery app according to a user command or the like. At this time, it is assumed that the gallery app is a preset application which automatically executes the screen protection function.

As shown in FIG. 16 (a), when the gallery app is executed, the mobile terminal 100 automatically assumes that the user views important information and automatically executes the screen protection function.

That is, the mobile terminal 100 provides the execution screen 1610 of the gallery app in the front view angle direction so that only the user can see it, and simultaneously displays the application execution screen 1610 And a screen 1620 different from the screen 1620 in the lateral viewing angle direction. At this time, the screen 1620 provided in the side viewing angle direction may be a black screen.

16 (b), when the execution of the gallery app is terminated, the mobile terminal 100 displays the operation screen 1630 in a normal manner so that the display unit 151 can be seen in all directions of the viewing angle , 1640).

FIG. 17 is a diagram referred to explain the operation of a mobile terminal that recognizes the surrounding illuminance and provides a screen protection function.

Referring to FIG. 17, when a screen protection function is selected according to a user command or the like, the mobile terminal 100 activates the brightness sensor 142 and periodically detects the brightness of the surroundings using the activated brightness sensor.

As shown in FIG. 17A, when the surrounding brightness is low, the mobile terminal 100 may provide a screen protection function by dimming the brightness of the display unit 151 as a result of the illumination detection.

17 (b), when the surrounding brightness is bright, the mobile terminal 100 may provide a screen protection function by brightening the brightness of the display unit 151 .

The present invention described above can be implemented as computer readable codes on a medium on which a program is recorded. The computer readable medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of the computer readable medium include a hard disk drive (HDD), a solid state disk (SSD), a silicon disk drive (SDD), a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, , And may also be implemented in the form of a carrier wave (e.g., transmission over the Internet). In addition, the computer may include a control unit 180 of the terminal. Accordingly, the above description should not be construed in a limiting sense in all respects and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

100: mobile terminal 110: wireless communication unit
120: input unit 140: sensing unit
150: output unit 160: interface unit
170: memory 180:
190: Power supply

Claims (10)

A camera disposed in front of the terminal body;
A display unit for displaying an operation screen; And
And a controller for performing eye tracking using the user image acquired through the camera and executing a screen protection function based on the eye tracking. The method according to claim 1,
Wherein the display unit is a multi-view display unit or a veil-view display unit capable of outputting different operation screens according to a viewing angle direction. The method according to claim 1,
Wherein the control unit detects the sight line position of the user based on the line-of-sight tracing and executes the screen-protecting function when the detected line-of-sight position is directed to the front of the display unit. The method according to claim 1,
When the screen protection function is executed, the control unit controls the first operation screen to be displayed in the front view angle direction of the display unit, and displays the second operation screen in the side view angle direction so that the user around the user can not see the first operation screen So as to control the mobile terminal. The method of claim 3,
Wherein the control unit displays only the display area corresponding to the detected sight line position so as to be clearly visible in the front view angle direction and displays the other remaining areas so as not to be visible in all the viewing angle directions. A display unit capable of outputting different operation screens according to a viewing angle; And
A first operation screen is displayed in a direction of a front view angle of the display unit when the event is detected, and a second operation screen is displayed in a side view angle direction And a second operation screen is displayed on the display unit. The method according to claim 6,
Wherein the display unit is a multi-view display unit or a veil-view display unit. The method according to claim 6,
Wherein the controller outputs a predetermined haptic effect or an alarm effect to inform the user of the event detection fact. The method according to claim 6,
The event may include an event in which a predetermined application is executed so that the screen protection function is automatically executed, an event in which a user is detected within a certain distance from the display unit, an event in which a plurality of people are detected within an angle of view of the camera, And an event in which a current location of the mobile terminal is detected in a location where the mobile terminal is located. The method according to claim 6,
Wherein the second operation screen is an operation screen independent of the personal information and the privacy of the user, and is an operation screen set by default by a manufacturer or pre-selected by a user.

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