KR20200011275A - Mobile terminal and method for controlling the same - Google Patents

Abstract

The present invention relates to a mobile terminal and a control method thereof. According to one embodiment of the present invention, the mobile terminal comprises: a camera; a display unit displaying a preview image received through the camera; a sensing unit sensing a gaze of a user; and a control unit determining an area where the gaze of the user faces in the preview image through the sensing unit and setting any one of a plurality of photographing modes based on a type of a subject corresponding to a graphic object included in the area.

Description

MOBILE TERMINAL AND METHOD FOR CONTROLLING THE SAME}

The present invention relates to a mobile terminal capable of capturing an image and a control method thereof.

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

The functions of mobile terminals are diversifying. For example, data and voice communication, taking a picture and video with a camera, recording a voice, playing a music file through a speaker system, and outputting an image or video to a display unit. Some terminals add an electronic game play function or perform a multimedia player function. In particular, recent mobile terminals may receive multicast signals that provide visual content such as broadcasting, video, and television programs.

As such functions are diversified, for example, a terminal may be a multimedia player having a complex function such as taking a picture or a video, playing a music or video file, playing a game, or receiving a broadcast. Is being implemented.

Recently, as the performance of the camera is developed, various functions using the camera have been developed. For example, development of functions for capturing high-quality still images or moving images or generating 3D images using depth information (depth value) of an image received through a camera is being actively performed.

One object of the present invention is to provide a mobile terminal and a control method thereof for capturing an image in an optimized manner.

Another object of the present invention is to provide a mobile terminal capable of capturing an optimized image according to a type of a subject to be photographed by a user and a control method thereof.

Another object of the present invention is to provide a mobile terminal capable of capturing an image in an optimized manner and a control method thereof according to a user's state.

According to an embodiment of the present invention, a mobile terminal may include a camera, a display unit displaying a preview image received through the camera, a sensing unit sensing a user's gaze, and a user's gaze facing the preview image through the sensing unit. And a controller configured to determine an area and to set one of the plurality of photographing modes based on the type of the subject corresponding to the graphic object included in the area.

The control unit may be configured to set a first photographing mode when the first graphic object corresponding to a first type of subject is included in an area to which the user's gaze points. When a second graphic object corresponding to a second kind of subject different from the first kind is included, the second graphic object is set to a second photographing mode different from the first photographing mode.

In example embodiments, the preview image may include a plurality of graphic objects corresponding to a plurality of subjects, and the controller may be further configured to control the user's gaze at each graphic object when the gaze of the user faces the plurality of graphic objects. Based on the time of stay, it is characterized by setting any one of a plurality of shooting modes.

The control unit may determine that a user's gaze is directed to a first graphic object of the plurality of graphic objects for a first time, and the second graphic object different from the first graphic object among the plurality of graphic objects. When it is determined that the user's gaze is directed for a second time longer than the first time, the photographing mode is set based on the type of the subject corresponding to the second graphic object.

The control unit may be configured to output, on the preview image, an indicator for indicating an area to which the user's gaze is directed, and when the one of the capturing modes is set, notification information indicating the set capturing mode to the display unit. It is characterized by outputting.

The control unit may determine a partial image including an area to which the user's eyes are directed in the preview image, and output the plurality of partial images to the display unit.

The plurality of partial images may be images having the same angle of view, and the plurality of partial images may have different image quality setting values.

The sensing unit may sense a heart rate of a user, and the controller may set one of a plurality of photographing modes based on the sensed heart rate of the user.

The sensing unit may sense a user's heart rate, and when the high speed photographing command is received, the sensing unit determines a time point at which to start high speed photography based on the user's heart rate, and starts a high speed from the determined time point. It is characterized by performing photography.

A control method of a mobile terminal according to an embodiment of the present invention may include displaying a preview image received through a camera, sensing a user's gaze, determining an area to which the user's gaze points in the preview image; And setting one of the plurality of photographing modes based on the type of the subject corresponding to the graphic object included in the area.

According to the present invention, the present invention can provide a mobile terminal and a control method thereof capable of automatically photographing an image of a desired image quality without a user's separate operation.

In addition, the present invention may provide a new user interface capable of capturing an image optimized for each type of subject without user intervention.

In addition, even if the image quality setting value is set for each type of subject, the present invention can provide an optimized user interface that can more easily change the image quality setting value so that a user can obtain a desired image quality.

1A is a block diagram illustrating a mobile terminal according to the present invention.
1B and 1C are conceptual views of one example of a mobile terminal, viewed from different directions.
2 is a flowchart illustrating a representative control method of the present invention.
3, 4, 5, 6 and 7 are conceptual views for explaining the control method described in FIG.
8 and 9 are flowcharts illustrating a further embodiment of the present invention.
FIG. 10 is a conceptual diagram for describing an embodiment described with reference to FIG. 8.

Hereinafter, exemplary embodiments disclosed herein will be described in detail with reference to the accompanying drawings, and the same or similar components will be given the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. The suffixes "module" and "unit" for components used in the following description are given or mixed in consideration of ease of specification, and do not have distinct meanings or roles. In addition, in the following description of the embodiments disclosed herein, when it is determined that the detailed description of the related known technology may obscure the gist of the embodiments disclosed herein, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easily understanding the embodiments disclosed in the present specification, the technical idea disclosed in the specification by the accompanying drawings are not limited, and all changes included in the spirit and scope of the present invention. It should be understood to include equivalents and substitutes.

Terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

When a component is said to be "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that another component may be present in the middle. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

Singular expressions include plural expressions unless the context clearly indicates otherwise.

In this application, the terms "comprises" or "having" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

The mobile terminal described herein includes a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant, a portable multimedia player, a navigation, a slate PC , Tablet PCs, ultrabooks, wearable devices, such as smartwatches, glass glasses, head mounted displays, and the like. have.

However, it will be readily apparent to those skilled in the art that the configuration according to the embodiments described herein may also be applied to fixed terminals such as digital TVs, desktop computers, digital signages, etc., except when applicable only to mobile terminals. will be.

1A to 1C, FIG. 1A is a block diagram illustrating a mobile terminal according to the present invention, and FIGS. 1B and 1C are conceptual views of one example of the mobile terminal, viewed from 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 controller 180, and a power supply unit 190. ) May be included. The components shown in FIG. 1A are not essential to implementing a mobile terminal, so that a mobile terminal described herein may have more or fewer components than those listed above.

More specifically, the wireless communication unit 110 of the components, between the mobile terminal 100 and the wireless communication system, between the mobile terminal 100 and another mobile terminal 100, or the mobile terminal 100 and the external server It may include one or more modules that enable wireless communication therebetween. 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 the broadcast receiving module 111, the mobile communication module 112, the wireless internet module 113, the short range communication module 114, and the location information module 115. .

The input unit 120 may include a camera 121 or an image input unit for inputting an image signal, a microphone 122 for inputting an audio signal, an audio input unit, or a user input unit 123 for receiving information from a user. , Touch keys, mechanical keys, and the like. The voice data or the image data collected by the input unit 120 may be analyzed and processed as a control command of the user.

The sensing unit 140 may include one or more sensors 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, an illumination sensor, a touch sensor, an acceleration sensor, a magnetic sensor, and gravity. G-sensor, Gyroscope Sensor, Motion Sensor, RGB Sensor, Infrared Sensor, Infrared Sensor, Finger Scan Sensor, Ultrasonic Sensor Optical sensors (e.g. cameras 121), microphones (see 122), battery gauges, environmental sensors (e.g. barometers, hygrometers, thermometers, radiation detection sensors, Thermal sensors, gas sensors, etc.), chemical sensors (eg, electronic noses, healthcare sensors, biometric sensors, etc.). Meanwhile, the mobile terminal disclosed herein may utilize a combination of information sensed by at least two or more of these sensors.

The output unit 150 is used to generate an output related to sight, hearing, or tactile sense, and includes at least one of a display unit 151, an audio output unit 152, a hap tip module 153, and an optical output unit 154. can do. The display unit 151 forms a layer structure with or is integrally formed with the touch sensor, thereby implementing 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 the user, and may also provide an output interface between the mobile terminal 100 and the 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 connects a device equipped with a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, and an identification module. It may include at least one of a port, an audio input / output (I / O) port, a video input / output (I / O) port, and an earphone port. In the mobile terminal 100, in response to an external device connected to the interface unit 160, appropriate control associated with the connected external device may be performed.

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 that are driven in the mobile terminal 100, data for operating the mobile terminal 100, and instructions. At least some of these applications may be downloaded from an external server through wireless communication. In addition, at least some of these application programs may exist on the mobile terminal 100 from the time of shipment for basic functions of the mobile terminal 100 (for example, a call forwarding, a calling function, a message receiving, and a calling function). Meanwhile, the application program may be stored in the memory 170 and installed on the mobile terminal 100 to be driven by the controller 180 to perform an operation (or function) of the mobile terminal.

In addition to the operation related to the application program, the controller 180 generally controls the overall operation of the mobile terminal 100. The controller 180 may provide or process information or a function appropriate to a user by processing signals, data, information, and the like, which are input or output through the above-described components, or driving an application program stored in the memory 170.

In addition, the controller 180 may control at least some of the components described with reference to FIG. 1A in order to drive an application program stored in the memory 170. In addition, the controller 180 may operate by combining at least two or more of the components included in the mobile terminal 100 to drive the application program.

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

At least some of the components may operate in cooperation with each other to implement an operation, control, or control method of the 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 components listed above will be described in detail with reference to FIG. 1A before looking at various embodiments implemented through the mobile terminal 100 described above.

First, referring to the wireless communication unit 110, the broadcast receiving module 111 of the wireless communication unit 110 receives a broadcast signal and / or broadcast related information from an external broadcast management server through a broadcast channel. The broadcast channel may include a satellite channel and a terrestrial channel. 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 include technical standards or communication schemes (eg, Global System for Mobile communication (GSM), Code Division Multi Access (CDMA), Code Division Multi Access 2000 (CDMA2000), EV, etc.) for mobile communication. Enhanced Voice-Data Optimized or Enhanced Voice-Data Only (DO), Wideband CDMA (WCDMA), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution (LTE), LTE-A (Long Term Evolution-Advanced) and the like to transmit and receive a radio signal with at least one of a base station, an external terminal, a server on a mobile communication network.

The wireless signal may include various types of data according to transmission and reception of a voice call signal, a video call signal, or a text / multimedia message.

The wireless internet module 113 refers to a module for wireless internet access and may be embedded or external to the mobile terminal 100. The wireless internet module 113 is configured to transmit and receive wireless signals 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, Digital Living Network Alliance (DLNA), Wireless Broadband (WiBro), and WiMAX (World Interoperability for Microwave Access (HSDPA), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution (LTE), Long Term Evolution-Advanced (LTE-A), and the like. 113) transmits and receives data according to at least one wireless Internet technology in a range including the Internet technologies not listed above.

In view of the fact that the wireless Internet access by WiBro, HSDPA, HSUPA, GSM, CDMA, WCDMA, LTE, LTE-A, etc. is made through a mobile communication network, the wireless Internet module 113 for performing a wireless Internet access through the mobile communication network 113 ) May be understood as a kind of 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), ZigBee, and NFC. (Near Field Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, Wireless USB (Wireless Universal Serial Bus) by using at least one of the technologies, it can support near field communication. The short-range communication module 114 may be configured between a mobile terminal 100 and a wireless communication system, between the mobile terminal 100 and another mobile terminal 100, or through the wireless area network. ) And a network in which the other mobile terminal 100 (or an external server) is located. The short range wireless communication network may be short range wireless personal area networks.

Here, the other mobile terminal 100 is a wearable device capable of exchanging (or interworking) data with the mobile terminal 100 according to the present invention (eg, smartwatch, smart glasses). (smart glass), head mounted display (HMD). The short range communication module 114 may detect (or recognize) a wearable device that can communicate with the mobile terminal 100 around the mobile terminal 100. Further, when the detected wearable device is a device that is authenticated to communicate with the mobile terminal 100 according to the present invention, the controller 180 may include at least a portion of data processed by the mobile terminal 100 in the short range communication module ( The transmission may be transmitted to the wearable device through 114. Therefore, the user of the wearable device may use data processed by the mobile terminal 100 through the wearable device. For example, according to this, when a user receives a phone call, the user makes a phone call through the wearable device, or when a message is received in the mobile terminal 100, the user receives the received call through the wearable device. It is possible to check the message.

The location information module 115 is a module for obtaining a location (or current location) of a 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 a GPS module, the mobile terminal can acquire the location of the mobile terminal using a signal transmitted from a GPS satellite. As another example, when the mobile terminal utilizes the Wi-Fi module, the mobile terminal may acquire the location of the mobile terminal based on information of the wireless access point (AP) transmitting or receiving the Wi-Fi module and the wireless signal. If necessary, the location information module 115 may perform any function of other modules of the wireless communication unit 110 to substitute or additionally obtain data regarding the location of the mobile terminal. 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, and for inputting image information, the mobile terminal 100 is one. Alternatively, the 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 call mode or the photographing mode. The processed image frame may be displayed on the display unit 151 or stored in the memory 170. On the other hand, the plurality of cameras 121 provided in the mobile terminal 100 may be arranged to form a matrix structure, and through the camera 121 forming the matrix structure, various angles or focuses are provided to the mobile terminal 100. The plurality of pieces of image information may 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 implementing a stereoscopic image.

The microphone 122 processes external sound signals into electrical voice data. The processed voice data may be variously used according to a function (or an application program being executed) performed by the mobile terminal 100. Meanwhile, various noise reduction algorithms may be implemented in the microphone 122 to remove noise generated in the process of receiving an external sound signal.

The user input unit 123 is for receiving information from a user. When information is input through the user input unit 123, the controller 180 may control an 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, for example, buttons located at the front and rear or side surfaces of the mobile terminal 100, a dome switch, a jog wheel, Jog switch, etc.) and touch input means. As an example, the touch input means may include a virtual key, a soft key, or a visual key displayed on the touch screen through a software process, or a portion other than the touch screen. It may be made of a touch key disposed in the. The virtual key or the visual key may be displayed on the touch screen while having various forms, for example, graphic, text, icon, video, or the like. It can be made of a combination of.

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 sensing signal corresponding thereto. The controller 180 may control driving or operation of the mobile terminal 100 or perform data processing, function or operation related to an 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 or absence of an object approaching a predetermined detection surface or an object present in the vicinity without using a mechanical contact by using an electromagnetic force or infrared rays. The proximity sensor 141 may be disposed at an inner region of the mobile terminal covered by the touch screen described above or near the touch screen.

Examples of the proximity sensor 141 include a transmissive photoelectric sensor, a direct reflective photoelectric sensor, a mirror reflective photoelectric sensor, a high frequency oscillating proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor. In the case where the touch screen is capacitive, the proximity sensor 141 may be configured to detect the proximity of the object with the change of the electric field according to the proximity of the conductive object. In this case, the touch screen (or touch sensor) itself may be classified as a proximity sensor.

On the other hand, for convenience of description, the action of allowing the object to be recognized without being in contact with the touch screen so that the object is located on the touch screen is referred to as "proximity touch", and the touch The act of actually touching an object on the screen is called a "contact touch." The position where an object is in close proximity touch on the touch screen means a position where the object is perpendicular to the touch screen when the object is in close proximity touch. The proximity sensor 141 may detect a proximity touch and a proximity touch pattern (for example, a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, and a proximity touch movement state). have. Meanwhile, the controller 180 processes data (or information) corresponding to the proximity touch operation and the proximity touch pattern detected 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 controller 180 may control the mobile terminal 100 to process different operations or data (or information) according to whether the touch on the same point on the touch screen is a proximity touch or a touch touch. .

The touch sensor senses a touch (or touch input) applied to the touch screen (or the display unit 151) using at least one of various touch methods such as a resistive film method, a capacitive method, an infrared method, an ultrasonic method, and a magnetic field method. do.

As an example, the touch sensor may be configured to convert a change in pressure applied to a specific portion of the touch screen or capacitance generated at the specific portion into an electrical input signal. The touch sensor may be configured to detect a position, an area, a pressure at the touch, a capacitance at the touch, and the like, when the touch object applying the touch on the touch screen is touched on the touch sensor. Here, the touch object is an object applying a touch to the touch sensor and may be, for example, a finger, a touch pen or a stylus pen, a pointer, or the like.

As such, 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 then transmits the corresponding data to the controller 180. As a result, the controller 180 can determine which area of the display unit 151 is touched. Here, the touch controller may be a separate component from the controller 180 or may be the controller 180 itself.

The controller 180 may perform different control or perform the same control according to the type of the touch object, which touches the touch screen (or a touch key provided in addition to the touch screen). Whether to perform different control or the same control according to the type of the touch object may be determined according to the operation state of the mobile terminal 100 or an application program being executed.

Meanwhile, the touch sensor and the proximity sensor described above may be independently or combined, and may be a short (or tap) touch, a long touch, a multi touch, a drag touch on a touch screen. ), Flick touch, pinch-in touch, pinch-out touch, swipe touch, hovering touch, etc. A touch can be sensed.

The ultrasonic sensor may recognize location information of a sensing object using ultrasonic waves. On the other hand, the controller 180 can calculate the position of the wave generation source through the information detected from the optical sensor and the plurality of ultrasonic sensors. The position of the wave source can be calculated using the property that light is much faster than ultrasonic waves, i.e., the time that the light reaches the optical sensor is much faster than the time when the ultrasonic wave reaches the ultrasonic sensor. More specifically, the position of the wave generation source may be calculated using a time difference from the time when the ultrasonic wave reaches the light as the reference signal.

On the other hand, the camera 121, which is described as the configuration of the input unit 120, includes at least one of a camera sensor (for example, CCD, 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 detect a touch of a sensing object on a 3D stereoscopic image. The photo sensor may be stacked on the display element, which is configured to scan the movement of the sensing object in proximity to the touch screen. More specifically, the photo sensor mounts a photo diode and a transistor (TR) in a row / column and scans contents mounted on the photo sensor by using an electrical signal that varies according to the amount of light applied to the photo diode. That is, the photo sensor calculates coordinates of the sensing object according to the amount of change of light, and thus the position information of the sensing object can be obtained.

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 in the mobile terminal 100 or user interface (UI) and graphical user interface (GUI) 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.

The stereoscopic display unit may be a three-dimensional display method such as a stereoscopic method (glasses method), an auto stereoscopic method (glasses-free method), a projection method (holographic method).

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, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. The sound output unit 152 may also output a sound signal related to a function (for example, a call signal reception sound or a message reception sound) performed in the mobile terminal 100. The sound output unit 152 may include a receiver, a speaker, a buzzer, and the like.

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

In addition to the vibration, the haptic module 153 may be used for stimulation such as a pin array vertically moving with respect to the contact skin surface, a jetting force or suction force of air through the injection or inlet, grazing to the skin surface, contact of an electrode, and electrostatic force. Various tactile effects can be generated, such as the effects of the heat-absorption and the reproduction of the sense of cold using the element capable of generating heat.

The haptic module 153 may not only deliver a tactile effect through direct contact, but also may allow a user to feel the tactile effect through a muscle sense such as a finger or an arm. Two or more haptic modules 153 may be provided according to a configuration aspect of the mobile terminal 100.

The light output unit 154 outputs a signal for notifying occurrence of an event by using light of a light source of the mobile terminal 100. Examples of events generated in the mobile terminal 100 may be 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 the rear. The signal output may be terminated by the mobile terminal detecting the user's event confirmation.

The interface unit 160 serves as a path to all external devices connected to the mobile terminal 100. The interface unit 160 receives data from an external device, receives power, transfers the power to each component inside the mobile terminal 100, or transmits the data inside the mobile terminal 100 to an external device. For example, a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, or a port that connects a device equipped with an identification module. The port, an audio input / output (I / O) port, a video input / output (I / O) port, an earphone port, and the like may be included in the interface unit 160.

On the other hand, the identification module is a chip that stores a variety of information for authenticating the usage rights of the mobile terminal 100, a user identification module (UIM), subscriber identity module (SIM), universal user authentication And a universal subscriber identity module (USIM). A device equipped with an identification module (hereinafter referred to as an 'identification device') may be manufactured in the form of a smart card. Therefore, the identification device may be connected to the terminal 100 through the interface unit 160.

In addition, when the mobile terminal 100 is connected to an external cradle, the interface unit 160 may be a passage for supplying power from the cradle to the mobile terminal 100 or may be input from the cradle by a user. Various command signals may be a passage through which the mobile terminal 100 is transmitted. Various command signals or power input from the cradle may operate as signals 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 may temporarily store input / output data (for example, a phone book, a message, a still image, a video, etc.). The memory 170 may store data relating to various patterns of vibration and sound output when a touch input on the touch screen is performed.

The memory 170 may include a flash memory type, a hard disk type, a solid state disk type, an SSD type, a silicon disk drive type, and a multimedia card micro type. ), Card type memory (e.g. SD or XD memory, etc.), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read It may include at least one type of storage medium of -only memory (PROM), programmable read-only memory (PROM), magnetic memory, magnetic disk and optical disk. The mobile terminal 100 may be operated in connection with a web storage that performs a storage function of the memory 170 on the Internet.

On the other hand, as described above, the controller 180 controls the operation related to the application program, and generally the overall operation of the mobile terminal 100. For example, if the state of the mobile terminal satisfies a set condition, the controller 180 may execute or release a lock state that restricts an input of a user's control command to applications.

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

The power supply unit 190 receives an external power source and an internal power source under the control of the controller 180 to supply power for operation of each component. The power supply unit 190 includes a battery, and the battery may be a built-in battery configured to be rechargeable, and may be detachably coupled to the terminal body for charging.

In addition, the power supply unit 190 may include a connection port, the connection port may be configured as an example of the interface 160 to which the 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 uses one or more of an inductive coupling based on a magnetic induction phenomenon or a magnetic resonance coupling based on an electromagnetic resonance phenomenon from an external wireless power transmitter. Power can be delivered.

Meanwhile, various embodiments of the present disclosure may be implemented in a recording medium readable by a computer or a similar device using, for example, software, hardware, or a combination thereof.

1B and 1C, the disclosed mobile terminal 100 includes a terminal body in the form of a bar. However, the present invention is not limited thereto and may be applied to various structures such as a watch type, a clip type, a glass type, or a folder type, a flip type, a slide type, a swing type, a swivel type, and two or more bodies which are coupled to be movable relative to each other. . Although related to a particular type of mobile terminal, a description of a particular type of mobile terminal may generally apply to other types of mobile terminals.

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

The mobile terminal 100 includes a case (eg, a frame, a housing, a cover, etc.) forming an external 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 internal 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.

The display unit 151 may be disposed in front of the terminal body to output information. As shown, the window 151a of the display unit 151 may be mounted to the front case 101 to form a front surface of the terminal body together with the front case 101.

In some cases, an electronic component may be mounted on the rear case 102. Electronic components attachable to the rear case 102 include a removable battery, an identification module, a memory card, and the like. In this case, the rear case 102 may be detachably coupled to the rear case 102 to cover the mounted electronic component. Therefore, when the rear cover 103 is separated from the rear case 102, the electronic components mounted on the rear case 102 are exposed to the outside.

As illustrated, when the rear cover 103 is coupled to the rear case 102, a portion of the side surface of the rear case 102 may be exposed. In some cases, the coupling serial case 102 may be completely covered by the rear cover 103. On the other hand, the rear cover 103 may be provided with an opening for exposing the camera 121b or the sound output unit 152b to the outside.

The cases 101, 102, and 103 may be formed by injecting a synthetic resin, or may be formed of a metal, for example, stainless steel (STS), aluminum (Al), titanium (Ti), or the like.

The mobile terminal 100 may be configured such that one case may provide 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, the mobile terminal 100 of the unibody that the synthetic resin or metal from the side to the rear may be implemented.

On the other hand, the mobile terminal 100 may be provided with a waterproof portion (not shown) to prevent water from seeping 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 combination thereof. It may include a waterproof member for sealing the inner space.

The mobile terminal 100 includes a display unit 151, first and second sound output units 152a and 152b, a proximity sensor 141, an illuminance sensor 142, an optical output unit 154, and first and second devices. The cameras 121a and 121b, the first and second manipulation units 123a and 123b, the microphone 122, the interface unit 160, and the like may be provided.

Hereinafter, as illustrated in FIGS. 1B and 1C, the display unit 151, the first sound output unit 152a, the proximity sensor 141, the illuminance sensor 142, and the light output unit may be disposed on the front surface of the terminal body. 154, the first camera 121a and the first operation unit 123a are disposed, and the second operation unit 123b, the microphone 122, and the interface unit 160 are disposed on the side of the terminal body. A mobile terminal 100 in which a second sound output unit 152b and a second camera 121b are disposed on a rear surface of the mobile terminal 100 will be described as an example.

However, these configurations are not limited to this arrangement. These configurations may be excluded or replaced as needed or disposed on other sides. For example, the first manipulation 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 of the terminal body instead of 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 in the mobile terminal 100 or user interface (UI) and graphical user interface (GUI) information according to the execution screen information. .

The display unit 151 may include a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), and a flexible display (flexible). display, a 3D display, and an e-ink display.

In addition, two or more display units 151 may exist according to the implementation form of the mobile terminal 100. In this case, the plurality of display units may be spaced apart or integrally disposed on one surface of the mobile terminal 100, or may be disposed on different surfaces.

The display unit 151 may include a touch sensor that senses a touch on the display unit 151 so as to receive a control command by a touch method. Using this, when a touch is made to the display unit 151, the touch sensor may sense the touch, and the controller 180 may generate a control command corresponding to the touch based on the touch sensor. The content input by the touch method may be letters or numbers or menu items that can be indicated or designated in various modes.

On the other hand, the touch sensor is formed of a film having a touch pattern and disposed between the window 151a and the display (not shown) on the back of the window 151a, or a metal wire directly patterned on the back of the window 151a. May be Alternatively, the touch sensor may be integrally formed with the display. For example, the touch sensor may be disposed on a substrate of the display or provided inside the display.

As such, the display unit 151 may form a touch screen together with the touch sensor, and in this case, the touch screen may function as the user input unit 123 (see FIG. 1A). In some cases, the touch screen may replace at least some functions of the first manipulation 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 include a loud speaker for outputting various alarm sounds or multimedia reproduction sounds. It can be implemented in the form of).

A sound hole for emitting sound generated from the first sound output unit 152a may be formed in the window 151a of the display unit 151. However, the present invention is not limited thereto, and the sound may be configured to be emitted along an assembly gap between the structures (for example, a gap between the window 151a and the front case 101). In this case, an externally formed hole may be invisible or hidden for sound output, thereby simplifying the appearance of the mobile terminal 100.

The light output unit 154 is configured to output light for notifying when an event occurs. Examples of the event may include message reception, call signal reception, missed call, alarm, calendar notification, email reception, information reception through an application, and the like. The controller 180 may control the light output unit 154 to terminate the output of the light when the user confirms the event confirmation.

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

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

In the drawing, the first operation unit 123a is illustrated as being a touch key, but the present invention is not limited thereto. For example, the first operation unit 123a may be a push key or a combination of a touch key and a push key.

Content input by the first and second manipulation units 123a and 123b may be variously set. For example, the first manipulation unit 123a receives a command such as a menu, a home key, a cancellation, a search, and the like, and the second manipulation unit 123b is output from the first or second sound output units 152a and 152b. The user may receive a command such as adjusting the volume of the sound and switching to the touch recognition mode of the display unit 151.

Meanwhile, as another example of the user input unit 123, a rear input unit (not shown) may be provided on the rear surface of the terminal body. The rear input unit is manipulated to receive a command for controlling the operation of the mobile terminal 100, and the input content may be variously set. For example, commands such as power on / off, start, end, scroll, etc., control of the volume of sound output from the first and second sound output units 152a and 152b, and the touch recognition mode of the display unit 151. Commands such as switching can be received. The rear input unit may be implemented in a form capable of input by touch input, push input, or a combination thereof.

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

As such, when the rear input unit is provided at the rear of the terminal body, a new type user interface using the same may be implemented. In addition, when the touch screen or the rear input unit described above replaces at least some functions of the first operation unit 123a provided on the front of the terminal body, and the first operation unit 123a is not disposed on the front 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 a user's fingerprint, and the controller 180 may use fingerprint information detected through the fingerprint recognition sensor as an 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 a user's voice, other sounds, and the like. The microphone 122 may be provided at a plurality of locations and configured to receive stereo sound.

The interface unit 160 serves as a path for connecting the mobile terminal 100 to an external device. For example, the interface unit 160 may be connected to another device (eg, an earphone or an external speaker), a port for short-range communication (for example, an infrared port (IrDA Port), or a Bluetooth port (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 in the form of a socket for receiving an external card such as a subscriber identification module (SIM) or a user identity module (UIM), a memory card for storing information.

The second camera 121b may be disposed on the rear surface of the terminal body. In this case, the second camera 121b has a photographing direction 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 format. Such a camera may be referred to as an 'array camera'. When the second camera 121b is configured as an array camera, images may be photographed in various ways using a plurality of lenses, and images of better quality may be obtained.

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

The second sound output unit 152b may be further disposed on 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 to implement a speakerphone mode during a call.

The terminal body may be provided with at least one antenna for wireless communication. The antenna may be built in the terminal body or formed in the case. For example, an antenna that forms part of the broadcast receiving module 111 (refer to FIG. 1A) may be configured to be pulled out from the terminal body. Alternatively, the antenna may be formed in a film type and attached to the inner side of the rear cover 103, or may be configured such that a case including a conductive material functions 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 embedded in the terminal body or detachably configured 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 enable wireless charging through a wireless charger. The wireless charging may be implemented by a magnetic induction method or a resonance method (magnetic resonance method).

Meanwhile, in the drawing, the rear cover 103 is coupled to the rear case 102 to cover the battery 191 to limit the detachment of the battery 191 and to protect the battery 191 from external shocks and foreign substances. To illustrate. When the battery 191 is detachably configured to the terminal body, the rear cover 103 may be detachably coupled to the rear case 102.

An accessory may be added to the mobile terminal 100 to protect the appearance or to assist or expand the function of the mobile terminal 100. An example of such an accessory may be a cover or pouch that covers or accommodates at least one surface of the mobile terminal 100. The cover or pouch may be configured to extend the function of the mobile terminal 100 in cooperation with the display unit 151. Another example of the accessory may be a touch pen for assisting or extending a touch input to a touch screen.

On the other hand, the mobile terminal according to the present invention can provide a mobile terminal and a control method thereof that can automatically take a picture of the optimized image quality without user intervention.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the mobile terminal and its control method for capturing the optimized image for each type of subject to be taken without the user's intervention.

2 is a flowchart illustrating a representative control method of the present invention, and FIGS. 3, 4, 5, 6, and 7 are conceptual views illustrating the control method described with reference to FIG. 2.

The mobile terminal of the present invention includes a camera 121, a display unit 151 for displaying a preview image received through the camera, a sensing unit 140 for sensing the eyes of a user, and a controller 180 capable of controlling them. It may include.

The controller 180 may determine an area to which the user's eyes are directed in the preview image through the sensing unit 140. Thereafter, the controller 180 may set any one of the plurality of photographing modes based on the type of the subject corresponding to the graphic object included in the area.

Hereinafter, a specific control method of the present invention will be described.

Referring to FIG. 2, first, the present invention displays the preview image received through the camera 121 on the display unit 151 (S202).

In detail, the mobile terminal of the present invention may receive and capture an image through the camera 121.

The controller 180 may execute a camera application based on a user request. For example, the camera application may be executed based on a touch applied to (or selected) an icon of the camera application or a user input received from a user input unit.

When the camera application is executed, the camera 121 provided in the mobile terminal 100 may be turned on or activated.

When the camera 121 is turned on (or activated), the controller 180 may receive an image (or a preview image) through the camera 121.

The image received through the camera may be called a preview image. In detail, the preview image refers to an image received through a camera in real time. The preview image may be changed based on the movement of the mobile terminal equipped with the camera 121 by an external force or the movement of the subject.

The preview image is an image output to the display unit 151 before the image is captured (captured) and may be changed in real time by the movement of the mobile terminal or the movement of the subject.

For example, as shown in FIG. 3, when the camera is turned on (or when a camera application is executed), the controller 180 displays the preview image 300 received through the camera 121b. Can be output to

The image photographed by the camera may mean, for example, an image in which the preview image is captured (captured). For example, the image may include a touch of a photographing button output to a display unit of a mobile terminal, a user gesture associated with capturing a preview image is detected through the preview image, or a physical button provided in the mobile terminal is pressed. Can be taken based on the like.

The image described herein may mean at least one of a preview image or a captured image.

When a photographing command is received while the preview image is output, the controller 180 may capture (capture) the preview image. The captured image may be stored in a memory.

The photographing command may be performed in various ways. For example, a touch is applied to the photographing button output to the display unit 151, a user input unit provided to the mobile terminal is pushed, and the mobile terminal. An object (for example, a finger) touches and falls off to a proximity sensor provided in the device, and may include a user's specific gesture (for example, keeping a palm for a certain time).

Returning to the present invention, while the preview image received through the camera is displayed on the display unit 151, the user's eyes can be sensed through the sensing unit 140 (S204).

Here, the sensing unit 140 may be, for example, a camera (for example, a front camera 121a when the user is looking at the front of the mobile terminal) to photograph the user. In addition, the sensing unit 140 may include a separate configuration (for example, an infrared camera) for sensing the eyes of the user.

For example, as shown in FIG. 3, when the preview image 300 received through the rear camera 121b is output through the display unit 151, the sensing unit 140 is placed to photograph the user. It may be the front camera 121a.

Also, even when the preview image received through the front camera 121a is output through the display unit 151, the sensing unit 140 may be the front camera 121a which is placed to photograph the user.

The controller 180 may sense the gaze of the user through the sensing unit 140 (for example, the camera 121a placed to photograph the user).

The controller 180 may determine which region (or which point) the user is looking at (or stare at) in the preview image 300 based on the sensed gaze of the user.

Since the technology for sensing the eyes of the user is a general technology, a detailed description thereof will be omitted.

Thereafter, the present invention may determine an area to which the user's eyes are directed in the preview image (S206).

In detail, the controller 180 may determine a direction (or a point) to which the user's gaze is directed through the sensing unit 140, and determine which area of the preview image the user's gaze is based on.

That is, the controller 180 may determine which area of the preview image the user stares at.

For example, as shown in FIG. 4, the preview image 300 may include at least one graphic object.

In detail, the graphic object may mean an image (or a part of the preview image or a part of the preview image) corresponding to the subject included in the preview image. That is, at least one graphic object may be included in the preview image, and the graphic objects may correspond to a subject.

That is, the graphic object included in the preview image may mean an image corresponding to a subject photographed through a camera.

As illustrated in FIG. 4, the controller 180 may determine an area 410 to which the user's gaze 400 is directed through the sensing unit 140. Thereafter, the controller 180 may determine the type of the subject corresponding to the graphic object 420 included in the area 410.

Subsequently, the present invention may set any one of the plurality of photographing modes based on the type of the subject corresponding to the graphic object included in the area to which the user's gaze points (S208).

The mobile terminal of the present invention may include a plurality of shooting modes in which different image quality setting values are set.

For example, as illustrated in FIG. 5, the plurality of photographing modes include a portrait photographing mode 500a, a food photographing mode 500b, a pet photographing mode 500c, a landscape photographing mode, a city photographing mode, a flower. Various shooting modes such as a shooting mode, a sunrise shooting mode, and a sunset shooting mode may be included.

Each of the plurality of photographing modes may have different image quality setting values. Here, the image quality setting value includes various attributes that determine the image quality when capturing an image such as brightness, color, sharpness, contrast, saturation, automatic exposure (AE) (for example, exposure time or ISO), and auto white balance (AWB). It can contain the value of.

If the image quality setting value is set differently, it may mean that at least one of the various attributes described above is set differently.

The plurality of photographing modes may be referred to as a filter or an image quality filter.

The controller 180 may set any one of the plurality of photographing modes, based on the type of the subject corresponding to the graphic object included in the area to which the user's gaze points in the preview image.

For example, when the type of the subject is a pet, the controller 180 may set a pet photographing mode among a plurality of photographing modes.

When the pet shooting mode is set, the preview image output to the display unit 151 may be displayed by applying a quality setting value associated with the pet shooting mode. In this case, when the image quality setting value previously set and the image quality setting value associated with the pet photographing mode are different, the image quality of the preview image output to the display unit 151 may be changed.

Referring to FIG. 6A, the controller 180 may include a first graphic object corresponding to a first type of object (eg, a pet) in an area 610 to which the user's gaze 400 faces. If 620 is included, it may be set to a first photographing mode (eg, a pet photographing mode). The first photographing mode may be a photographing mode that is set to photograph with an optimized image quality when photographing the type of the first graphic object 620.

On the other hand, when the user's gaze faces a second graphic object corresponding to a second type of object (for example, a flower) that is different from the first type, the controller 180 may determine the first shooting mode. It may be set to another second shooting mode (eg, flower shooting mode).

In addition, as illustrated in FIG. 6A, the preview image 300 may include a plurality of graphic objects corresponding to a plurality of subjects.

In this case, a case where the eyes of the user are directed to all of the plurality of graphic objects may occur.

In this case, when the gaze of the user is directed toward the plurality of graphic objects, the controller 180 may set one of the plurality of shooting modes based on the time that the gaze of the user stays on each graphic object. .

Specifically, the controller 180 determines that a user's gaze is directed to a first graphic object (for example, a graphic object corresponding to a flower) among a plurality of graphic objects for a first time, and among the plurality of graphic objects. It may be determined that the user's gaze is directed to a second graphic object different from the first graphic object (eg, a graphic object corresponding to a pet) for a second time longer than the first time.

In this case, the controller 180 may set the photographing mode based on the type of the subject corresponding to the second graphic object.

For example, as shown in (a) of FIG. 6, the controller 180 maintains the gaze of the user on the first graphic object corresponding to the flower for a first time (for example, 1 second), and the pet If the user's gaze stays for a second time longer than the first time (for example, 3 seconds) to the second graphic object corresponding to, the shooting mode corresponding to the graphic object corresponding to the pet may be set. .

In this case, the controller 180 may apply the image quality setting value set in the set shooting mode to the preview image currently being output.

Meanwhile, as illustrated in FIG. 6A, the controller 180 outputs an indicator 600 on the preview image 300 indicating an area (or a point, a point, a part, etc.) to which the user's eyes are directed. can do.

In addition, as illustrated in FIG. 6B, the controller 180 may set one of the shooting modes (the shooting mode set based on the type of the subject corresponding to the graphic object included in the area to which the user's eyes are directed). ) Is set, the notification information 630 indicating the set shooting mode may be output to the display unit 151 (or the preview image 300).

The controller 180 may determine a part of the image including the area 610 to which the user's gaze 400 faces in the preview image 300.

The size of the partial image may correspond to the size of the area 610.

As illustrated in FIG. 7, the controller 180 may output a plurality of partial images to the display unit 151. In this case, the plurality of partial images may be copied (replicated) by a plurality of portions of the preview image.

The plurality of partial images may be simultaneously output to the display unit 151 and may be changed in real time based on the movement of the mobile terminal or the movement of the subject.

The plurality of partial images may be images having the same angle of view. That is, the plurality of partial images may be a plurality of copies of some of the partial images included in the preview image. Accordingly, the plurality of partial images 612a, 612b, and 612c may output the same screen (images of the same portion of the preview image).

The controller 180 may set different image quality setting values for the plurality of partial images. That is, the plurality of partial images 612a, 612b, and 612c may have different image quality setting values.

In this case, the plurality of partial images may all output the same screen, but may have different image quality.

That is, the controller 180 may extract the region 610 including the graphic object to which the user's eyes are directed as a partial image.

Thereafter, the controller 180 may duplicate the extracted partial images by a plurality, apply different image quality setting values to the partial images, and output the plurality of partial images to the display unit 151. .

In this case, an image quality setting value applied to each of the plurality of images may be selected in various ways.

For example, the controller 180 may determine an image quality setting value associated with a shooting mode set based on a type of a subject corresponding to a graphic object included in an area to which the user's gaze points in the preview image, in the first partial image 612a. Applicable to

The controller 180 may apply the changed image quality setting value to the second partial image 612b when there is a history of changing the past image quality setting value or when there is a history of additionally changing the image quality setting value in the photographing mode. Can be.

In addition, the controller 180 may apply the image quality setting value basically set to the third partial image 612c.

In addition, the controller 180 may apply various image quality setting values to the plurality of partial images 612a, 612b, and 612c, and output the plurality of partial images to the display unit 151 together.

In this state, when a touch is applied to any one of the plurality of partial images, the controller 180 may apply the image quality setting value set to the touched partial image to the preview image 300. In this case, the plurality of partial images may disappear from the display unit 151, and one preview image (that is, the entire preview image) may be output to the display unit 151 by applying the image quality setting value.

The contents described above can be summarized as shown in the flowcharts of FIGS. 8 and 9.

8 and 9 are flowcharts illustrating another exemplary embodiment of the present invention, and FIG. 10 is a conceptual diagram illustrating the exemplary embodiment described with reference to FIG. 8.

Referring to FIG. 8, first, the controller 180 may turn on a camera based on a user request (S802). In this case, the controller 180 may output the preview image received through the camera to the display unit 151.

When the camera 121 is turned on, the controller 180 may compare the environments of the front camera 121a and the rear camera 121b (S804).

Here, comparing the environment of the front camera 121a and the rear camera 121b is to determine which camera is set to receive the preview image, based on the preview image received through each camera, The environment in which it is placed (eg, whether the camera is heard by the user or not by the user), which camera is placed to shoot the user when the camera is heard by the user, and the like.

The controller 180 may recognize the user by using any one of the front camera 121a and the rear camera 121b (S806).

For example, when it is determined that the front camera 121a is set to photograph the user through the step of comparing the environment, the controller 180 based on the preview image received through the front camera 121a, the user Can be recognized.

In addition, the controller 180 may recognize the eyes of the user through the front camera 121a (the sensing unit 140) (S808). That is, the controller 180 may determine an area to which the user's eyes are directed through the sensing unit 140.

In the preview image received through the camera 121, the controller 180 may include a subject corresponding to a graphic object included in an area to which the user's eyes are directed or a scene corresponding to the preview image (eg, sunrise, sunset, City, a landscape screen) can be recognized (S810).

The controller 180 may determine whether a photographing mode corresponding to the type (or recognized scene) of the subject exists (S812).

When there is a shooting mode corresponding to the type (or recognized scene) of the subject among the plurality of shooting modes, the controller 180 may set an image quality setting value to the corresponding shooting mode.

If the user is not recognized, the line of sight is not recognized, or the photographing mode corresponding to the type (or the recognized scene) of the subject does not exist, the controller 180 determines a preset image quality setting value (or currently received). The image quality setting value may be applied to the auto image quality setting value set based on the state (image quality) of the preview image (S816).

Subsequently, when a photographing command is received, the controller 180 can photograph the preview image in a state in which a quality setting value set in the current preview image is applied (S820).

On the other hand, the controller 180 may perform additional control (A) after the step S814.

Referring to FIG. 9, the controller 180 may determine a partial image including an area to which the user's eyes are directed in the preview image, and output the plurality of partial images to the display unit 151 in operation S902. .

As described above with reference to FIG. 7, the plurality of partial images may all have the same screen (or the same angle of view), and the plurality of partial images may have different image quality setting values.

Thereafter, when the user selects one partial image (S904), the controller 180 applies the image quality setting value set to the selected partial image to the preview image, and outputs the preview image to the display unit 151. It may be (S906).

8, the controller 180 may determine a shooting mode based on the user's state.

For example, the state of the user may include a heart rate of the user.

The sensing unit 140 may sense the heart rate of the user. For example, the controller 180 may sense a heart rate of a user holding a mobile terminal using various sensors such as an RGB camera or a proximity sensor included in the sensing unit 140 (S818).

The controller 180 may set any one of the plurality of photographing modes based on the heart rate of the user sensed by the sensing unit 140 (S814).

For example, the controller 180 may change a quality setting value of the preview image according to the sensed heart rate of the user based on information (or history) associated with different shooting modes for each heart rate.

Meanwhile, the present invention may perform high speed photography in order to capture a slow motion image. High speed photography means capturing more image frames per unit time than when shooting a normal video.

Since the high speed photography requires capturing a large number of image frames, a lot of data processing is required.

Conventionally, in order to shoot a slow motion video, all the video is recorded by high-speed shooting from the time the video is taken to the end of the video, and then through the editing process, only slow motion for a portion of the entire video recording time Had to put an effect.

As such, in order to generate some slow motion images incorporating the slow motion effect for only a part of time, first of all, it was necessary to shoot the images through high-speed shooting from the time when the video was taken to the end of the video. Accordingly, there has been a problem that much data processing is inevitable.

The present invention can provide a control method capable of reducing data throughput required to generate a partial slow motion image through a heart rate of a user sensed through a sensing unit.

For example, the sensing unit 140 may sense the heart rate of the user.

When the high speed shooting command is received, the controller 180 may determine a time point to start high speed photography based on the heart rate of the user, and perform high speed photography from the determined time point.

For example, as illustrated in FIG. 10, when the high speed photographing command is received, the controller 180 may sense the heart rate of the user.

Here, even if a high-speed shooting command is received, the controller 180 can take a video by normal shooting when the user's heart rate is equal to or less than a reference value.

Subsequently, when the user's heart rate exceeds the reference value, the controller 180 may start high-speed photographing at a time point when the user's heart rate exceeds the reference value.

Subsequently, when the photographing end command is received when the user's heart rate exceeds the reference value, the controller 180 captures the image in the normal photographing mode and then slows down the portion captured in the high-speed photographing mode from the point where the user's heart rate exceeds the reference value. You can shoot motion images.

If the user's heart rate falls below the reference value in a state in which the user's heart rate exceeds the reference value, before the shooting end command is received, the controller 180 captures the image by high speed photography only until a point where the user's heart rate falls below the reference value; That is, the high speed shooting ends when the user's heart rate falls below the reference value), and after that, the image can be taken in the normal shooting mode.

Subsequently, when the photographing end command is received, the controller 180 performs high-speed photographing only during a section in which the heart rate is greater than the reference value as shown in FIG. 10 (that is, the slow motion occurs only in the section in which the heart rate is greater than the reference value). ) You can create (save) a video.

In this way, the present invention may generate a partial slow motion image to which the slow motion effect is applied only during a part of the video by using the heart rate without an additional editing process in an optimized manner.

That is, the present invention eliminates the need to perform high-speed shooting for the entire video, thereby reducing the amount of data calculation, and editing which has to be performed to apply a slow motion effect only for a part of time after performing high-speed shooting for the entire video. The process can be omitted.

According to the present invention, the present invention can provide a mobile terminal and a control method thereof capable of automatically photographing an image of a desired image quality without a user's separate operation.

In addition, the present invention may provide a new user interface capable of capturing an image optimized for each type of subject without user intervention.

In addition, even if the image quality setting value is set for each type of subject, the present invention can provide an optimized user interface that can more easily change the image quality setting value so that a user can obtain a desired image quality.

The present invention described above can be embodied 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 computer-readable media include hard disk drives (HDDs), solid state disks (SSDs), silicon disk drives (SDDs), ROMs, RAMs, CD-ROMs, magnetic tapes, floppy disks, optical data storage devices, and the like. This also includes those implemented in the form of carrier waves (eg, transmission over the Internet). In addition, the computer may include the controller 180 of the terminal. Accordingly, the above detailed description should not be construed as limiting in all aspects and should be considered as illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

Claims (10)

camera;
A display unit displaying a preview image received through the camera;
Sensing unit for sensing the eyes of the user; And
A control unit configured to determine an area to which the user's eyes are directed in the preview image through the sensing unit and to set one shooting mode among a plurality of shooting modes based on a type of a subject corresponding to a graphic object included in the area; Mobile terminal comprising. The method of claim 1,
The control unit,
When the first graphic object corresponding to the first type of subject is included in the area to which the user's eyes are directed, set to the first photographing mode,
When the second graphic object corresponding to a second type of subject different from the first type is included in an area to which the user's eyes are directed, moving to a second shooting mode different from the first shooting mode terminal. The method of claim 1,
The preview image includes a plurality of graphic objects corresponding to a plurality of subjects,
The control unit,
And when the gaze of the user faces the plurality of graphic objects, setting one of the plurality of photographing modes based on the time at which the gaze of the user stays on each of the graphic objects. The method of claim 3, wherein
The control unit,
It is determined that a user's gaze is directed to a first graphic object of the plurality of graphic objects for a first time, and a second longer than the first time to a second graphic object different from the first graphic object of the plurality of graphic objects. And if it is determined that the gaze of the user is directed during the time, the photographing mode is set based on the type of the subject corresponding to the second graphic object. The method of claim 1,
The control unit,
Outputting an indicator on the preview image indicating an area to which the user's eyes are directed;
And outputs notification information indicating the set shooting mode to the display unit when the shooting mode is set. The method of claim 1,
The control unit,
Determine a partial image including an area to which the user's eyes are directed in the preview image,
And a plurality of the partial images are output to the display unit. The method of claim 6,
The plurality of partial images are images having the same angle of view, and the plurality of partial images have different image quality setting values. The method of claim 1,
The sensing unit senses a user's heart rate,
The control unit,
The mobile terminal, characterized in that for setting one of the plurality of shooting modes based on the sensed heart rate of the user. The method of claim 1,
The sensing unit senses a user's heart rate,
The control unit,
When the high-speed shooting command is received, based on the heart rate of the user, it is determined a time to start high-speed shooting, and the high-speed shooting from the determined time point characterized in that the mobile terminal. Displaying a preview image received through a camera;
Sensing a gaze of a user;
Determining an area to which the user's eyes are directed in the preview image; And
And setting any one of a plurality of photographing modes based on a type of a subject corresponding to the graphic object included in the area.

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