WO2018093002A1

WO2018093002A1 - Mobile terminal and method for controlling same

Info

Publication number: WO2018093002A1
Application number: PCT/KR2017/005662
Authority: WO
Inventors: 조태훈; 김창목; 권아림; 추정훈; 김은혜; 장유준
Original assignee: 엘지전자 주식회사
Priority date: 2016-11-18
Filing date: 2017-05-31
Publication date: 2018-05-24
Also published as: KR20180056182A

Abstract

The present invention relates to a mobile terminal capable of capturing an image and, more particularly, to a mobile terminal, in which the size of an image of a subject displayed on a display unit of the mobile terminal is fixed even when the distance between the mobile terminal and the subject changes, and a method for controlling the same. The present invention provides a mobile terminal comprising: a camera for capturing an image including a subject; a display unit for displaying the captured image; and a control unit, wherein the control unit establishes the subject in the captured image, and performs at least one of an optical zoom adjustment through adjustment of a focal length of the camera or a digital zoom adjustment of the captured image in order to adjust the magnification of the captured image when the distance between the mobile terminal and the subject changes, thereby controlling the size of the established subject to appear constant. Thus, the present invention has the effect of providing the mobile terminal that is capable of capturing the subject at a constant size even when the distance between the mobile terminal and the subject changes, and expressing a "zoom out and track in" effect that is also known as the Hitchcock effect.

Description

Mobile terminal and its control method

The present invention relates to a mobile terminal capable of capturing an image, and more particularly, to a mobile terminal and a method of controlling the image of a subject displayed on the display unit of the mobile terminal, even if the distance between the mobile terminal and the subject changes. It is about.

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 have an electronic game play function or 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 the terminal functions are diversified, for example, such a terminal is 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.

In order to support and increase the function of such a terminal, it may be considered to improve the structural part and / or the software part of the terminal.

In general, the mobile terminal includes a camera capable of capturing at least one of the front and the rear of the mobile terminal.

The camera included in the mobile terminal provides an optical zoom and a digital zoom function, and the zoom function may adjust the size at which the subject is photographed.

Various effects can be given by using the zoom function.

Therefore, providing various photographing effects using a camera of a mobile terminal has always been an important concern, and research on various photographing effects has been conducted.

An object of the present invention is to provide a mobile terminal capable of photographing a subject with a certain size even if the distance between the mobile terminal and the subject changes.

Another object of the present invention is to provide a mobile terminal capable of expressing an effect which is a zoom out track called a hitchcock effect.

Another object of the present invention is to provide a mobile terminal capable of maximizing the hitchcock zoom expression by maintaining the size of the subject when the camera of the mobile terminal is zoomed out.

According to an aspect of the present invention to achieve the above or another object, includes a camera for photographing an image including a subject, a display unit for displaying the photographed image and the control unit, the controller is to set the subject in the photographed image When the distance from the subject is changed, at least one of optical zoom adjustment or digital zoom adjustment of the photographed image is performed by adjusting the focal length of the camera to adjust the magnification of the photographed image. Provided is a mobile terminal for controlling the size of the display to be constant.

Further, according to another aspect of the invention, the step of photographing the image including the subject, displaying the photographed image, setting the subject in the photographed image and when the distance to the subject is changed, Performing at least one of an optical zoom control through a focal length adjustment of the camera or a digital zoom control of the photographed image to adjust the magnification so that the size of the set subject is seen to be constant; Provide a method of operation.

The effects of the mobile terminal and its control method according to the present invention are as follows.

According to at least one of the embodiments of the present invention, even if the distance between the mobile terminal and the subject changes, there is an effect of providing a mobile terminal capable of photographing a subject with a predetermined size.

In addition, according to at least one of the embodiments of the present invention, there is an effect of providing a mobile terminal capable of expressing an effect which is a zoom out track called a hitchcock effect.

In addition, according to at least one of the embodiments of the present invention, when the camera of the mobile terminal is zoomed out, there is an effect of providing a mobile terminal capable of maximizing the hitchcock zoom expression by maintaining the size of the subject.

1A is a block diagram illustrating a mobile terminal related to the present invention.

1B and 1C are conceptual views of one example of a mobile terminal, viewed from different directions.

2A to 3D are diagrams for describing a method of constantly displaying the size of an image of a subject, according to an exemplary embodiment.

4A is a flowchart illustrating a method of constantly displaying the size of an image of a subject according to an exemplary embodiment.

4B to 5C are diagrams for describing a method of constantly displaying the size of an image of a subject according to an exemplary embodiment.

6A to 6C are diagrams for describing a hitchcock zoom effect according to an exemplary embodiment.

7A to 7E are diagrams for describing a hitchcock zoom effect, according to an exemplary embodiment.

8A to 8B are views for explaining the hitchcock zoom effect using the front camera and its limitations according to an embodiment of the present invention.

9A to 9E are diagrams for describing a method of maximizing a hitchcock zoom effect by fixing a size of a subject.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings, and the same or similar components are denoted by 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 used in consideration of ease of specification, and do not have distinct meanings or roles from each other. In addition, in describing 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 intended to facilitate understanding of the embodiments disclosed herein, but are not limited to the technical spirit disclosed herein by the accompanying drawings, 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 referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. 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, and the like, 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 the 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 use 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 being 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 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 via 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). 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 typically 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 by 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. Furthermore, 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 switching of broadcast channels 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), and EV). 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 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.

Examples of wireless Internet technologies include 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), at least one of Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, Wireless USB (Wireless Universal Serial Bus) technology can be used to support short-range 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 networks. ) 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 (for example, smartwatch, smart glasses). (smart glass), head mounted display (HMD). The short range communication module 114 may sense (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 call is received by the mobile terminal 100, the user performs a phone call through the wearable device or when a message is received by the mobile terminal 100, the received 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 the GPS module, the mobile terminal may 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. For input of 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 a matrix structure in this way, the mobile terminal 100 may have various angles or focuses. 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 be a mechanical input unit (or a mechanical key, for example, a button, a dome switch, a jog wheel, or the like located at the front or rear or side of the mobile terminal 100). 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 in 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 transmission photoelectric sensor, a direct reflection photoelectric sensor, a mirror reflection photoelectric sensor, a high frequency oscillation proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor. In the case where the touch screen is capacitive, the proximity sensor 141 may be configured to detect the proximity of the object by 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 explanation, an 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 a "proximity touch", and the touch The act of actually touching an object on a screen is called a "contact touch." The position at which the 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. Further, 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 applies 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. Detect.

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 know 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.

Meanwhile, the controller 180 may perform different control or perform the same control according to the type of touch object that 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 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 the light is much faster than the ultrasonic wave, that is, 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 has been described as the configuration of the input unit 120, includes at least one of a camera sensor (eg, 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 with respect to 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 light change, 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 haptic 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 or sequentially output them.

In addition to vibration, the haptic module 153 may be used to stimulate pins that vertically move with respect to the contact skin surface, jetting force or suction force of air through the jetting or suction port, grazing to the skin surface, contact of electrodes, and electrostatic force. Various tactile effects can be generated, such as effects by the endothermic and the reproduction of a sense of cold using the elements capable of endotherm or heat generation.

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 occurring 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 data inside the mobile terminal 100 to an external device. For example, a port connecting 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. The port, audio input / output (I / O) port, video input / output (I / O) port, earphone port, etc. 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 regarding vibration and sound of various patterns 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), 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 input of a user's control command to applications.

In addition, the controller 180 may perform control and processing related to voice call, data communication, video call, or the like, or may perform pattern recognition processing for recognizing handwriting input 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 be provided with a connection port, the connection port may be configured as an example of the interface 160 is electrically connected to the external charger for supplying power for charging the battery.

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 the present invention can 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. . 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.

Herein, the terminal body may be understood as a concept that refers 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 cover 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 shown, 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 rear case 102 may be completely covered by the rear cover 103 during the coupling. 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 units. 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. The mobile terminal 100 in which the second sound output unit 152b and the second camera 121b are disposed on the 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 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). display, a 3D display, or an e-ink display.

In addition, two or more display units 151 may exist according to an 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. By 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.

Meanwhile, 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 rear surface of the window 151a or directly patterned on the rear surface of the window 151a. It can also 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 in the display.

As such, the display unit 151 may form a touch screen together with the touch sensor. 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 the user's ear, and the second sound output unit 152b may be 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, schedule notification, email reception, information reception through an application, and the like. When the user's event confirmation is detected, the controller 180 may control the light output unit 154 to end the light output.

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 operated 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 manipulation unit 123a may be a mechanical key or a combination of a touch key and a push key.

The contents input by the first and

second manipulation units

123a and 123b may be variously set. For example, the first operation unit 123a receives a command such as a menu, a home key, a cancellation, a search, etc., and the second operation 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 contents 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. For 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 body when the user grips 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 in the front of the terminal body, the first operation unit 123a is not disposed on the front of the terminal body. The display unit 151 may be configured with 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 shines light toward the subject when the subject is photographed by the second camera 121b.

The second sound output unit 152b may be additionally 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 of 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 shock and foreign matter. 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 be linked with the display unit 151 to expand the function of the mobile terminal 100. Another example of the accessory may be a touch pen for assisting or extending a touch input to a touch screen.

Next, a communication system that can be implemented through the mobile terminal 100 according to the present invention will be described.

First, the communication system may use different air interfaces and / or physical layers. For example, a radio interface that can be used by a communication system includes frequency division multiple access (FDMA), time division multiple access (TDMA), and code division multiple access (CDMA). ), Universal Mobile Telecommunications Systems (UMTS) (especially Long Term Evolution (LTE), Long Term Evolution-Advanced (LTE-A)), Global System for Mobile Communications (GSM), etc. This may include.

Hereinafter, for convenience of description, the description will be limited to CDMA. However, it is apparent that the present invention can be applied to any communication system including an orthogonal frequency division multiplexing (OFDM) wireless communication system as well as a CDMA wireless communication system.

The CDMA wireless communication system includes at least one terminal 100, at least one base station (Base Station, BS (also referred to as Node B or Evolved Node B)), and at least one Base Station Controllers (BSCs). ), And may include a mobile switching center (MSC). The MSC is configured to connect with the Public Switched Telephone Network (PSTN) and BSCs. The BSCs may be connected to the BS through a backhaul line. The backhaul line may be provided according to at least one of E1 / T1, ATM, IP, PPP, Frame Relay, HDSL, ADSL, or xDSL. Thus, a plurality of BSCs can be included in a CDMA wireless communication system.

Each of the plurality of BSs may include at least one sector, and each sector may include an omnidirectional antenna or an antenna pointing in a radial direction from the BS. In addition, each sector may include two or more antennas of various types. Each BS may be configured to support a plurality of frequency assignments, and the plurality of frequency assignments may each have a specific spectrum (eg, 1.25 MHz, 5 MHz, etc.).

The intersection of sectors and frequency assignments may be called a CDMA channel. BSs may be called Base Station Transceiver Subsystems (BTSs). In this case, one BSC and at least one BS may be collectively referred to as a "base station". The base station may also indicate “cell site”. Or, each of the plurality of sectors for a particular BS may be called a plurality of cell sites.

The broadcast transmitter (BT) transmits a broadcast signal to the terminals 100 operating in the system. The broadcast receiving module 111 illustrated in FIG. 1A is provided in the terminal 100 to receive a broadcast signal transmitted by BT.

In addition, a satellite positioning system (Global Positioning System, GPS) for identifying the position of the mobile terminal 100 may be linked to the CDMA wireless communication system. The satellite 300 helps to locate the mobile terminal 100. Useful location information may be obtained by up to two or more satellites. Here, the location of the mobile terminal 100 may be tracked using all the technologies capable of tracking the location as well as the GPS tracking technology. In addition, at least one of the GPS satellites may optionally or additionally be responsible for satellite DMB transmission.

The location information module 115 provided in the mobile terminal is used to detect, calculate, or identify the location of the mobile terminal. Examples of the location information module 115 may include a Global Position System (GPS) module and a Wireless Fidelity (WiFi) module. 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 GPS module 115 calculates distance information and accurate time information away from three or more satellites, and then triangulates the calculated information to accurately calculate three-dimensional current position information according to latitude, longitude, and altitude. can do. Currently, a method of calculating position and time information using three satellites and correcting the error of the calculated position and time information using another satellite is widely used. In addition, the GPS module 115 may calculate speed information by continuously calculating the current position in real time. However, it is difficult to accurately measure the position of the mobile terminal using the GPS module in the shadowed area of the satellite signal such as indoors. Accordingly, in order to compensate for GPS positioning, a WPS (WiFi Positioning System) may be utilized.

The Wi-Fi Positioning System (WPS) uses a WiFi module provided in the mobile terminal 100 and a wireless access point (AP) for transmitting or receiving a wireless signal with the WiFi module. As a technology for tracking the location of a, it refers to a WLAN (Wireless Local Area Network) based location positioning technology using WiFi.

The Wi-Fi location tracking system may include a Wi-Fi location server, a mobile terminal 100, a wireless AP connected to the mobile terminal 100, and a database in which any wireless AP information is stored.

The mobile terminal 100 connected to the wireless AP may transmit a location information request message to the Wi-Fi location server.

The Wi-Fi positioning server extracts the information of the wireless AP connected to the mobile terminal 100 based on the location information request message (or signal) of the mobile terminal 100. Information of the wireless AP connected to the mobile terminal 100 may be transmitted to the Wi-Fi positioning server through the mobile terminal 100, or may be transmitted from the wireless AP to the Wi-Fi positioning server.

Based on the location information request message of the mobile terminal 100, the extracted information of the wireless AP is MAC Address, Service Set IDentification (SSID), Received Signal Strength Indicator (RSSI), Reference Signal Received Power (RSRP), RSRQ ( It may be at least one of Reference Signal Received Quality, Channel Information, Privacy, Network Type, Signal Strength, and Noise Strength.

As described above, the Wi-Fi location server receives the information of the wireless AP connected to the mobile terminal 100, and extracts the wireless AP information corresponding to the wireless AP to which the mobile terminal is connected from a pre-established database. At this time, the information of any wireless AP stored in the database is MAC address, SSID, channel information, Privacy, Network Type, latitude and longitude coordinates of the wireless AP, building name, floor number, indoor detailed location information (GPS coordinates) Available), the AP owner's address, telephone number, and the like. In this case, in order to remove the wireless AP provided by the mobile AP or the illegal MAC address in the positioning process in the positioning process, the Wi-Fi positioning server may extract only a predetermined number of wireless AP information in the order of high RSSI.

Thereafter, the Wi-Fi location server may extract (or analyze) location information of the mobile terminal 100 using at least one piece of wireless AP information extracted from a database. The location information of the mobile terminal 100 is extracted (or analyzed) by comparing the included information with the received wireless AP information.

As a method for extracting (or analyzing) the location information of the mobile terminal 100, a cell-ID method, a finger print method, a triangulation method, a landmark method, or the like may be utilized.

The Cell-ID method is a method of determining the location of a mobile AP having the strongest signal strength among neighboring wireless AP information collected by the mobile terminal. The simple implementation, no additional cost, and quick location information can be obtained. However, the low installation density of the wireless AP reduces the positioning accuracy.

The fingerprint method is a method of selecting a reference location in a service area, collecting signal strength information, and estimating a location based on signal strength information transmitted from a mobile terminal based on the collected information. In order to use the fingerprint method, it is necessary to database propagation characteristics in advance.

The triangulation method calculates the position of the mobile terminal based on the coordinates of at least three wireless APs and the distance between the mobile terminals. In order to measure the distance between the mobile terminal and the wireless AP, the signal strength is converted into distance information, a time of arrival of a radio signal (ToA), a time difference of transmission of a signal (Time Difference of Arrival, TDoA) , Angle of signal transmission (Angle of Arrival, AoA) may be used.

The landmark method is a method of measuring the location of a mobile terminal using a landmark transmitter that knows the location.

In addition to the methods listed, various algorithms may be utilized as a method for extracting (or analyzing) location information of a mobile terminal.

The extracted location information of the mobile terminal 100 is transmitted to the mobile terminal 100 through the Wi-Fi positioning server, the mobile terminal 100 can obtain the location information.

The mobile terminal 100 may obtain location information by being connected to at least one wireless AP. In this case, the number of wireless APs required to obtain location information of the mobile terminal 100 may be variously changed according to a wireless communication environment in which the mobile terminal 100 is located.

As described above with reference to FIG. 1A, a mobile terminal according to the present invention includes Bluetooth ™, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and NFC (Near). Short-range communication technologies such as field communication and wireless universal serial bus (USB) may be applied.

Among these, the NFC module provided in the mobile terminal supports contactless short-range wireless communication between terminals at a distance of about 10 cm. The NFC module may operate in any one of a card mode, a reader mode, and a P2P mode. In order for the NFC module to operate in a card mode, the mobile terminal 100 may further include a security module for storing card information. Here, the security module may be a physical medium such as a universal integrated circuit card (UICC) (for example, a subscriber identification module (SIM) or a universal SIM (USIM)), a secure micro SD, and a sticker, or a logical medium embedded in a mobile terminal ( For example, it may be an embedded SE (Secure Element). Data exchange based on a single wire protocol (SWP) may be performed between the NFC module and the security module.

When the NFC module is operated in the card mode, the mobile terminal can transmit the stored card information to the outside like a conventional IC card. Specifically, when the mobile terminal storing the card information of the payment card such as a credit card or bus card is close to the toll payment machine, the mobile short-range payment can be processed, and the mobile terminal storing the card information of the access card is approved for access. Close to the flag, the approval process can be started. Cards such as credit cards, transportation cards, and access cards are mounted in a security module in the form of an applet, and the security module may store card information about the mounted card. Here, the card information of the payment card may be at least one of a card number, balance, and usage history, and the card information of the access card may include at least one of a user's name, number (eg, student's student number or company number), and access history. It can be one.

When the NFC module is operated in the reader mode, the mobile terminal can read data from an external tag. In this case, the data received by the mobile terminal from the tag may be coded in a data exchange format (NFC Data Exchange Format) determined by the NFC forum. In addition, the NFC Forum defines four record types. Specifically, the NFC forum defines four record type definitions (RTDs) such as smart poster, text, uniform resource identifier (URI), and general control. If the data received from the tag is a smart poster type, the controller may execute a browser (eg, an Internet browser). If the data received from the tag is a text type, the controller may execute a text viewer. When the data received from the tag is a URI type, the controller executes a browser or makes a phone call, and when the data received from the tag is a general control type, the controller can execute an appropriate operation according to the control content.

When the NFC module is operated in a peer-to-peer mode, the mobile terminal may perform P2P communication with another mobile terminal. In this case, LLCP (Logical Link Control Protocol) may be applied to P2P communication. A connection may be created between the mobile terminal and another mobile terminal for P2P communication. In this case, the generated connection may be classified into a connectionless mode in which one packet is exchanged and terminated, and a connection-oriented mode in which packets are continuously exchanged. Through P2P communication, data such as electronic business cards, contact information, digital photos, URLs, and setup parameters for Bluetooth and Wi-Fi connections can be exchanged. However, since the available distance of NFC communication is short, the P2P mode may be effectively used for exchanging small data.

Hereinafter, embodiments related to a control method that can be implemented in the mobile terminal configured as described above will be described with reference to the accompanying drawings. It is apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit and essential features of the present invention.

Referring to FIG. 2A, the camera 121 of the mobile terminal 100 may photograph the subject 210 positioned at the front or rear side of the mobile terminal 100.

The controller 180 of the mobile terminal 100 may determine the size of an image including the subject 210 based on the distance between the camera 121 and the subject 210 of the mobile terminal 100 and the magnification of the camera 121. have.

In an embodiment of the present disclosure, the magnification of the camera 121 may be determined by optical zoom by the lens of the camera and digital zoom by the controller 180 of the mobile terminal 100.

Optical zoom refers to a zoom function that enlarges or reduces an image by reducing or increasing a focal length by operations of several combined lenses.

On the other hand, digital zoom means to enlarge part of the digitized image again, and sometimes use digital zoom to make the image larger when the optical zoom reaches its limit.

2A to 2D, the mobile terminal 100 may photograph the subject 210 by varying the magnification of the camera 121.

That is, even if the distance 220 between the mobile terminal 100 and the subject 210 is the same, the magnification of the camera 121 may be differently photographed.

When zooming in the magnification of the camera 121 of the mobile terminal 100, the size of the subject can be taken larger, but the angle of view that can be taken becomes narrower. On the contrary, when the magnification of the camera 121 of the mobile terminal 100 is zoomed out, the subject The size of the is taken smaller, but the angle of view that can be taken becomes smaller.

For example, the angle of view of the camera 121 of the mobile terminal 100 may vary as the first angle of view 211, the second angle of view 212, and the third angle of view 213.

When photographing the subject 210 with the first angle of view 211, the subject 210 may be photographed with a size 221 as shown in FIG. 2B. On the other hand, when photographing the subject 210 with the second angle of view 212, the subject 210 may be photographed with the size 222 of FIG. 2C. In addition, when photographing the subject 210 with the third angle of view 213, the subject 210 may be photographed with the size 223 of FIG. 2D.

That is, when the focal length of the lens of the camera 121 is increased like the first angle of view 211, the angle of view is reduced and the subject included in the image is enlarged, but the number of objects that can be included in one image is reduced. Done.

On the other hand, when the focal length of the lens of the camera 121 is shortened as in the third angle of view 213, the angle of view increases, and the subject included in the image is reduced. The number of objects that can be included in an image Will increase.

In addition, although the magnification of the camera may be changed by using the focal length of the lens as described above, it may be changed by adjusting the magnification of the digital zoom.

3A to 3D are diagrams for describing a method of displaying the same size of a subject when the distance between the camera 121 and the

subjects

210 and 310 is different compared to FIGS. 2A to 2D.

When the distance 220 between the camera 121 and the subject 210 in FIG. 2A and the distance 320 between the camera 121 and the subject 310 in FIG. 3A are compared, the camera 121 and the subject 310 in FIG. 3A are compared. In FIG. 2A, the distance 320 may be shorter than the distance 220 between the camera 121 and the subject 210.

In general, when the distance 220 between the camera 121 and the subject 210 is changed to the distance 320 between the camera 121 and the subject 310, the image of the subject should be larger.

In detail, when the size 221 of the subject image of FIG. 2B is compared with the size 321 of the subject image of FIG. 3B, the size of the subject image is different even though the subject is photographed at the same angle of view.

In addition, when the size 222 of the subject image of FIG. 2C and the size 322 of the subject image of FIG. 3C and the size 223 of the subject image of FIG. 2D are compared with the size 323 of the subject image of FIG. Although the subject was photographed with the same angle of view, the latter size is displayed larger.

However, the size 221 of the subject image of FIG. 2B, the size 323 of the subject image of FIG. 3D, and the size 222 of the subject image of FIG. 2C and the size 321 of the subject image of FIG. 3B are the same. You can check it.

As described above, even when the distance between the camera 121 and the subject is different, the size of the subject may be expressed in the same manner.

Therefore, according to an embodiment of the present invention, even if the distance between the mobile terminal 100 including the camera 121 and the subject is changed, the size of the image of the subject may be kept constant.

Referring to FIG. 4A, the controller 180 of the mobile terminal 100 may display an image including the subject on the display unit 151 through the camera 121 and recognize the subject in the displayed image (S110).

In an embodiment, the controller 180 of the mobile terminal 100 may display an image captured by the camera 121 on the display unit 151.

According to another embodiment, the controller 180 of the mobile terminal 100 may recognize a subject in an image captured by the camera 121. In detail, the controller 180 of the mobile terminal 100 may recognize an object located at the center of the image as the selected subject. For example, referring to FIG. 4B, the object 401 to be photographed may be recognized as a subject.

However, when there are a plurality of objects, the controller 180 of the mobile terminal 100 may recognize one of the plurality of objects as the selected subject. For example, the most recognized object may be recognized as the selected subject, and the object in focus may be recognized as the selected subject.

However, this example is only one example of selecting a subject, and the subject may be selected in various ways.

In addition, when a gesture of a user is input to the display unit 151, the controller 180 of the mobile terminal 100 may determine an object corresponding to the gesture as the selected subject.

For example, the controller 180 of the mobile terminal 100 may display an image captured by the camera 121 on the display unit 151, and the user of the mobile terminal 100 may be displayed on the display unit 151. A gesture for selecting one of at least one object may be input.

When such a gesture is input, the controller 180 of the mobile terminal 100 may determine an object corresponding to the gesture as the selected subject.

As such, the controller 180 of the mobile terminal 100 may automatically recognize the subject, or may recognize the subject by the user's selection of the mobile terminal 100.

Referring to FIG. 4A, the controller 180 of the mobile terminal 100 determines the distance between the mobile terminal 100 and the subject (S120).

In an embodiment, the controller 180 of the mobile terminal 100 can determine the distance between the mobile terminal 100 and the subject.

For example, the controller 180 of the mobile terminal 100 can determine the distance between the mobile terminal 100 and the subject using the focal length of the camera 121.

In addition, the controller 180 of the mobile terminal 100 may determine the distance between the mobile terminal 100 and the subject using various sensors.

However, the method of determining the distance between the mobile terminal 100 and the subject in the present invention is not limited.

In another embodiment, the controller 180 of the mobile terminal 100 may determine a relative distance between the mobile terminal 100 and the subject.

In detail, an error may occur in obtaining an absolute distance between the mobile terminal 100 and the subject, and a separate sensor may be required.

However, the controller 180 of the mobile terminal 100 may measure the relative distance between the mobile terminal 100 and the subject using the size of the subject.

4B to 4D, when the distance 411 of the subject 401 and the user is 3m as shown in FIG. 4B, the size of the image of the subject 401 and the distance between the subject 402 and the user as shown in FIG. 4C ( Comparing the size of the subject 402 when 412 is 1m, the size of the image of the subject 401 is larger when the distance 411 is 3m.

The size of the image of the subject 401 when the distance 411 of the subject 401 and the user is 3m as shown in FIG. 4B and the size of the subject 403 when the distance 413 of the subject 403 and the user is 6m as shown in FIG. 4D. In comparison, when the distance 411 is 3m, the size of the image of the subject 401 is smaller.

As such, the controller 180 of the mobile terminal 100 may measure a relative distance between the mobile terminal 100 and the subject using the relative size of the image.

4A will be described again.

Referring to FIG. 4A, the controller 180 of the mobile terminal 100 recognizes a change in distance of a subject (S130).

In one embodiment, the controller 180 of the mobile terminal 100 may recognize a change in the distance between the mobile terminal 100 and the subject.

For example, the controller 180 of the mobile terminal 100 may recognize a change in the absolute distance between the mobile terminal 100 and the subject.

The controller 180 of the mobile terminal 100 measures the distance between the mobile terminal 100 and the subject in step S120 and recognizes the change in the measured length.

For another example, the controller 180 of the mobile terminal 100 may recognize a change in the relative distance between the mobile terminal 100 and the subject. That is, the controller 180 of the mobile terminal 100 may recognize the change in the distance between the mobile terminal 100 and the subject by using the change in the size of the image of the object.

Referring to FIG. 4A, the controller 180 of the mobile terminal 100 maintains a constant size of an image of a selected subject by varying the magnification of the camera 121.

In an embodiment of the present disclosure, the controller 180 of the mobile terminal 100 may change at least one of the magnification of the optical zoom or the digital zoom of the camera 121 so that the size of the image of the selected subject is constantly photographed.

A method of constantly displaying the size of an image of an embodiment of the present invention will be described with reference to FIGS. 4B to 5C.

As illustrated in FIGS. 4B to 4D, the mobile terminal 100 may photograph a subject at various distances.

Also, as in Figure 5a. In an embodiment of the present disclosure, the controller 180 of the mobile terminal 100 may display a distance 521 or a shooting magnification 511 between the mobile terminal 100 and the subject on the display unit 151.

4B is a diagram illustrating that the mobile terminal 100 captures a subject 401 at a distance 411 of 3 m. FIG. 5A illustrates a state in which an image photographed under the same conditions as in FIG. 4B is displayed on the display unit. Drawing.

The controller 180 of the mobile terminal 100 displays the image 501 corresponding to the subject 401 on the display unit 151 when the mobile terminal 100 moves the subject 401 at a distance 411 of 3m. can do.

In addition, the controller 180 of the mobile terminal 100 may display the distance 521 of the subject 401 on the display unit 151 by the mobile terminal 100. In addition, the controller 180 of the mobile terminal 100 may display a magnification 511 at which the mobile terminal 100 photographs the subject 401.

In an embodiment, as shown in FIG. 4B, the mobile terminal 100 photographs the subject 401 at a distance 411 of 3 m. As shown in FIG. 4C, the mobile terminal 100 views the subject 402 at a distance 412 of 1 m. ), The distance between the mobile terminal 100 and the subject may be changed.

As such, when the distance between the mobile terminal 100 and the subject becomes close, the image of the subject should be larger when the magnification of the camera 121 is not changed.

However, according to an exemplary embodiment of the present invention, as shown in FIG. 5B, the magnification of the carrera 121 is changed from 4 to 1 so that the image 502 corresponding to the subject 402 corresponds to the image 501 corresponding to the subject 401. It can be controlled to display the same size.

In another embodiment, as shown in FIG. 4B, the mobile terminal 100 photographs the subject 401 at a distance 411 of 3 m. As shown in FIG. 4D, the mobile terminal 100 views the subject 403 at a distance of 6 m ( In operation 413, the distance between the mobile terminal 100 and the subject may be changed.

As such, when the distance between the mobile terminal 100 and the subject becomes far, the image of the subject should be smaller when the magnification of the camera 121 is not changed.

However, according to an exemplary embodiment of the present invention, as shown in FIG. 5C, the magnification of the carrera 121 is changed from 4 to 8 so that the image 503 corresponding to the subject 403 is different from the image 501 corresponding to the subject 401. It can be controlled to display the same size.

In another embodiment, as shown in FIG. 4C, the mobile terminal 100 photographs the subject 402 at a distance 412 of 1 m. As shown in FIG. 4D, the mobile terminal 100 views the subject 403 at a distance of 6 m ( In operation 413, the distance between the mobile terminal 100 and the subject may be changed.

However, according to an exemplary embodiment of the present invention, as shown in FIG. 5B, the magnification of the carrera 121 is changed from 1 to 8 so that the image 503 corresponding to the subject 403 is different from the image 502 corresponding to the subject 402. It can be controlled to display the same size.

That is, according to an embodiment of the present disclosure, the controller 180 of the mobile terminal 100 may capture an image including the subject, display the captured image, and set the subject in the captured image.

In addition, when the distance from the subject is changed, the controller 180 of the mobile terminal 100 may adjust at least one of optical zoom and digital zoom of the photographed image by adjusting the focal length of the camera to adjust the magnification of the photographed image. By doing one, it is possible to control the size of the set subject to look constant.

Thus, despite the change in distance, it is possible to obtain the effect that the size of the selected subject is constantly displayed on the screen.

However, when the magnification is changed using the optical zoom, there is no problem of deterioration of the image quality. However, when the magnification is changed using the digital zoom, the image quality may be degraded.

Therefore, in an embodiment of the present disclosure, the controller 180 of the mobile terminal 100 determines the magnification of the optical zoom first, and the magnification for constantly displaying the size of the subject is determined by the range of the optical zoom of the camera. In case of deviation, digital zoom can be used.

In this case, there is an advantage in that a better image quality can be obtained by using optical zoom first within a certain distance.

Hitchcock zoom is a visual effect that allows a camera to approach a subject along a track while pushing the subject with a zoom lens.

The subject remains the same size within the frame, but the background changes relative to the subject, resulting in a visual distortion effect that causes the background to suddenly move away.

This hitchcock zoom is referred to as zoom out track in.

However, in order to obtain the hitchcock zoom effect, there is a problem that the magnification of the camera 121 must be changed while changing the distance between the mobile terminal 100 and the projectile body. In addition, the change of the magnification of the camera 121 should keep the size of the image corresponding to the subject constant.

Therefore, there is a problem that it is difficult for a user of the mobile terminal 100 to manually change the magnification of the camera 121 while changing the distance between the mobile terminal 100 and the projectile body.

6A to 6C, a user of the mobile terminal 100 may select an image 601 corresponding to a subject displayed on the display unit.

It is also possible to select a magnification 602 of the camera.

In addition, the user of the mobile terminal 100 may move the mobile terminal in the front and rear direction of the subject, as shown in Figs. 6b and 6c.

For example, when the camera of the mobile terminal 100 has a magnification of 8 or more, when the mobile terminal 100 is advanced 611 as shown in FIG. 8B, the controller 180 of the mobile terminal 100 lowers the magnification of the subject. The size of the image 613 corresponding to may be controlled to be constantly displayed.

For another example, when the camera magnification of the mobile terminal 100 is 32 or less. When the mobile terminal 100 is moved backward as shown in FIG. 8C (621), the controller 180 of the mobile terminal 100 is The magnification may be increased so that the size of the image 623 corresponding to the subject is constantly displayed.

According to an embodiment, when the gesture for entering the hitchcock mode is input, the controller 180 of the mobile terminal 100 may control the hitchcock zoom to operate.

In addition, in an embodiment, when the distance between the mobile terminal 100 and the subject decreases, the controller 180 of the mobile terminal 100 decreases at least one of the magnification of the optical zoom and the digital zoom, so that the subject Can constantly control the size displayed on the display unit.

In addition, in an embodiment, when the distance between the mobile terminal 100 and the subject increases, the controller 180 of the mobile terminal 100 increases the magnification of the optical zoom or the digital zoom, thereby increasing the subject. Can constantly control the size displayed on the display unit.

In another embodiment of the present disclosure, the mobile terminal 100 may further include a sensor for detecting a movement of the mobile terminal 100. The controller 180 of the mobile terminal 100 may detect a movement of the mobile terminal 100 using a sensor that detects the movement of the mobile terminal 100, and calculate a distance to the subject using the sensor.

7A to 7C, the effect of the hitchcock zoom will be described.

As shown in FIG. 7A, a

tree

703, 704, 705, 706, 713, 714, 715, and 716 may be assumed to have a subject 702 to be photographed and planted at a certain distance behind the subject 702.

Trees

703, 704, 705, 706, 713, 714, 715, 716 are planted at regular intervals, and

trees

703, 704, 705, 706 and

trees

713, 714, 715, 716 Assume that it is a symmetrical state.

The controller 180 of the mobile terminal 100 may photograph the subject 702 and the

trees

703, 704, 705, 706, 713, 714, 715, and 716 using the camera 121. In addition, the controller 180 of the mobile terminal 100 may set the subject 702 as the selected subject.

As described above, in the case where the subject 702 is set as the selected subject, when photographing with a narrow first angle of view 710 at a long distance, the camera 121 of the mobile terminal 100 includes the subject 702 and the

trees

703, 704, and 713. Can shoot. As described above, the narrow angle of view may mean that the focal length is long and thus the image is enlarged.

In this case, when the mobile terminal 100 moves forward 701 in the case where the subject 702 is set to the selected subject and the mobile terminal 100 moves forward 701 in the case of photographing at a narrow first angle of view 710, The image corresponding to the subject 702 becomes larger and larger, and the number of

trees

703, 704, 705, 706, 713, 714, 715, 716 photographed in the background will gradually decrease.

However, when using the hitchcock zoom as in the present invention, the size of the image corresponding to the subject 702 is kept constant by the zoom in track out effect, and the

trees

703, 704, 705, 706, 713, The number of 714, 715, 716 gradually increases.

In detail, when the mobile terminal 100 moves forward 701 in the case where the subject 702 is set to the selected subject, when the mobile terminal 100 moves forward 701 in the long distance, the controller 180 of the mobile terminal 100 In order to keep the image corresponding to the subject 702 constant without being enlarged, the magnification may be reduced to capture a second angle of view 720 having a wider angle of view.

When photographing with a wider angle of view 720, the angle of view that the mobile terminal can photograph increases as shown in FIG. 7A.

Accordingly, although the distance between the mobile terminal 100 and the subject 702 is closer, the

trees

703, 703, 704, 705, 706, 713, 714, 715, 716 that are photographed among the trees in the background are closer. It can be seen that the number of 704, 705, 713, 714, and 715 increases.

However, when the distance between the mobile terminal 100 and the subject 702 is close when the first angle of view 710 is changed from the second angle of view 720, as the photographing magnification of the camera 121 decreases, The size of the image corresponding to the photographed subject 702 may not change.

In addition, when the first angle of view 710 is changed from the second angle of view 720, the number of trees included in the photographed image among the

trees

703, 704, 705, 706, 713, 714, 715, 716 increases. do. The increase in the number of trees means that the size of each image of the

trees

703, 704, 705, 706, 713, 714, 715, 716 decreases.

In addition, the smaller size of each tree may mean that the distance between the subject 702 and the

trees

703, 704, 705, 706, 713, 714, 715, 716 is felt to be farther away.

Therefore, when the first view angle 710 is changed from the second view angle 720, the mobile terminal 100 may be closer to the subject 702, and the zoom of the camera may be farther away, thereby obtaining a track-in zoom out effect. . In other words, the size of the object selected by the track-in zoom-out effect does not change, but the background becomes farther and the number of objects included in the background increases and the size of each object decreases.

However, when the above description is changed from the first angle of view 710 to the second angle of view 720, the mobile terminal 100 becomes closer to the subject 702, and the zoom of the camera is farther away. Although the effect has been described, on the contrary, when the second angle of view 720 is changed from the first angle of view 710, that is, the mobile terminal 100 moves away from the subject 702 and the zoom of the camera becomes closer, It can also give you a track-out zoom in effect.

According to the track-out zoom-in effect, in contrast to the track-in zoom-out effect, the size of the selected subject does not change, but the background becomes closer, so that the number of objects included in the background decreases and the size of each object increases.

7B and 7C, FIG. 7B may be a screen shot at the first angle of view 710, and FIG. 7C may be a screen shot at the second angle of view 720.

7B and 7C, it can be seen that the

images

712 and 722 corresponding to the subject 702 are identical.

However, since the angle of view of the second angle of view 720 is wider than that of the first angle of view 710, the trees displayed on the screen among the

trees

703, 704, 705, 706, 713, 714, 715, and 716 in the background are made of the first angle of view. It can be seen that the

trees

703, 704, 705, 713, 714, and 715 are larger in the second angle of view than the

trees

703, 704 713, and 714 in the first angle of view.

On the other hand, the size of each tree at the first angle of view 710 may be greater than the size of each tree at the second angle of view 720. Therefore, it can be seen that the distance between the subject 702 and the

trees

703, 704, 705, 706, 713, 714, 715, 716 looks closer to the first angle of view 710.

Accordingly, according to the present invention, the size of the number of objects displayed on the background is changed while constantly displaying the size of the image corresponding to the subject 702 despite the variation of the distance between the mobile terminal 100 and the subject 702. An effect can be obtained, and such an effect can be obtained only by adjusting the distance between the mobile terminal 100 and the projectile body 702, and thus there is an advantage in that a camera photographing effect that is difficult to obtain with a conventional mobile terminal can be obtained.

In order to obtain the hitchcock zoom effect, the mobile terminal 100 must be physically moved. That is, the hitchcock effect can be obtained when the user of the mobile terminal 100 moves directly to the track-in zoom-out or track-out zoom-in.

However, when the mobile terminal 100 moves directly in this way, the screen may be shaken or a space in which the mobile terminal 100 may move may not be secured.

As shown in FIG. 8A, when the user of the mobile terminal 100 does not move and the user's arm of the mobile terminal 100 is moved 803 from the first position 801 to the second position 802 alone, sufficient hitchcock is sufficient. There is a problem that the effect of zooming is not obtained.

In general, when taking a selfie using the front camera there is a problem that the angle of view that can move as shown in Figure 8b and 8c is limited.

Therefore, in order to obtain the effect of the hitchcock zoom more effectively, other effects should be given.

Assume a

tree

911, 912, 913, 914, 915, 921, 922, 923, 924, 925, which have a subject 910 to be photographed and planted at a certain distance behind the subject 910, as shown in FIG. 9A. can do.

Trees (911, 912, 913, 914, 915, 921, 922, 923, 924, 925) are planted at regular intervals, and trees (911, 912, 913, 914, 915) and trees (921, 922, 923) , 924, 925 are assumed to be symmetrical from side to side.

The controller 180 of the mobile terminal 100 may photograph the subject 910 and the

trees

911, 912, 913, 914, 915, 921, 922, 923, 924, and 925 using the camera 121. In addition, the controller 180 of the mobile terminal 100 may set the subject 910 as the selected subject.

As described above, in the case where the subject 910 is set as the selected subject, when the camera 121 of the mobile terminal 100 is photographed with a narrow first angle of view 930 at a long distance, the subject 910 and the

trees

911, 912, 921, 922 can be taken. As described above, the narrow angle of view may mean that the focal length is long and thus the image is enlarged.

In this case, when the mobile terminal 100 moves forward in the case where the subject 910 is set as the selected subject and the mobile terminal 100 moves forward in the case where the mobile terminal 100 moves forward, the subject 910 ) Becomes larger and the number of

trees

911, 912, 913, 914, 915, 921, 922, 923, 924, 925 photographed in the background will gradually decrease.

However, when using the hitchcock zoom as in the present invention, the size of the image corresponding to the subject 910 is kept constant by the zoom in track out effect, and the

trees

911, 912, 913, 914, 915, 921, 922, 923, 924, and 925 will increase gradually.

Therefore, even though the distance between the mobile terminal 100 and the subject 910 is closer, the

trees

911, 912, 913, 914, 915, 921, 922, 923, 924, and 925 of the background are photographed. It can be seen that the number of

trees

911, 912, 913, 921, 922, and 923 increases.

However, when the distance between the mobile terminal 100 and the subject 910 is close when the first angle of view 930 is changed from the second angle of view 940, as the photographing magnification of the camera 121 decreases, The size of the image corresponding to the photographed subject 910 may not change.

Also, when the first angle of view 930 is changed from the second angle of view 940, the trees included in the photographed image among the

trees

911, 912, 913, 914, 915, 921, 922, 923, 924, and 925 are included. The number will increase. The increase in the number of trees means that the size of each image of the

trees

911, 912, 913, 914, 915, 921, 922, 923, 924, and 925 decreases.

In addition, the smaller size of each tree may mean that the distance between the subject 910 and the

trees

911, 912, 913, 914, 915, 921, 922, 923, 924, 925 is felt farther away. have.

This content can be said to be the same as FIG. 7A. However, there may be a case where it is no longer possible to move forward at the position of the second angle of view 940 and a sufficient hitchcock zoom effect may not be obtained only by moving from the first angle of view 930 to the second angle of view 940.

However, in this case, only the zoom magnification of the camera of the mobile terminal 100 may be adjusted to change from the second angle of view 940 to the third angle of view 950.

In this case, the size of the subject 910 is reduced, but the

trees

911, 912, 913, 914, and 921 photographed among the

trees

911, 912, 913, 914, 915, 921, 922, 923, 924, and 925 in the background are reduced. , 922, 923, and 924 increase.

However, in order to obtain the hitchcock effect, the size of the selected subject needs to be kept constant.

Therefore, in one embodiment of the present invention, the controller 180 of the mobile terminal 100 may control to maintain the size of the selected object and change only the background.

9B to 9E, FIG. 9B is a screen shot at the first angle of view 930, FIG. 9C is a screen shot at the second angle of view 940, and FIG. 9D is a shot at the third angle of view 950. The screen corresponding to the object 910 is not enlarged on the screen, and FIG. 9E may be a screen on which the image corresponding to the object 910 is enlarged on the screen captured by the third angle of view 950.

9B and 9C, it can be seen that the

images

960 and 970 corresponding to the subject 910 are identical.

However, since the angle of view of the second angle of view 940 is wider than that of the first angle of view 930, it is displayed on the screen among

trees

911, 912, 913, 914, 915, 921, 922, 923, 924, and 925 in the background. It can be seen that the trees are more trees (911, 912, 913, 921, 922, 923) in the second view angle than the trees (911, 912, 921, 922) in the first view angle.

On the other hand, the size of each tree at the first angle of view 930 may be greater than the size of each tree at the second angle of view 940. Therefore, it can be seen that the distance between the subject 910 and the

trees

911, 912, 913, 914, 915, 921, 922, 923, 924, and 925 appears closer to the first angle of view 930.

However, the image 980 corresponding to the subject 910 at the third angle of view 940 is smaller than the

images

960 and 970 corresponding to the subject 910 at the first angle of view 930 and the second angle of view 940. You can check it.

The hitchcock effect is important to keep the subject's image constant. Therefore, the hitchcock zoom effect cannot be obtained by simply adjusting the magnification of the camera 121 while the position of the mobile terminal 100 is fixed.

Accordingly, the controller 180 of the mobile terminal 100 determines the size of the image 980 corresponding to the subject 910 at the third angle of view 940 and the subject (at the first angle of view 930 and the second angle of view 940). The size of the

image

960 and 970 corresponding to 910 may be changed.

Referring to FIG. 9E, the size of the image 980 corresponding to the subject 910 at the third angle of view 940 is determined by the image corresponding to the subject 910 at the first angle of view 930 and the second angle of view 940. The image 990 corresponding to the changed subject 910 may be obtained by changing the size to the size of 960 and 970.

As such, the controller 180 of the mobile terminal 100 can maximize the effect of the hitchcock zoom by maintaining the size of the image corresponding to the subject while changing the magnification of the camera 121 without changing the position of the mobile terminal 100. Can be. That is, when the magnification of the captured image is changed by adjusting at least one of the optical zoom and the digital zoom magnification, the controller 180 of the mobile terminal 100 fixes the size of the range corresponding to the subject to the hitchcock zoom. The effect can be increased.

Therefore, according to an embodiment of the present invention, there is an advantage that the effect of the hitchcock zoom can be obtained while minimizing the movement of the mobile terminal 100. Due to this advantage, even when taking a self-portrait using the front camera of the mobile terminal 100, the hitchcock zoom effect can be obtained.

The present invention described above can be embodied as computer readable codes on a medium in 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 invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the invention are included in the scope of the invention.

According to the embodiment of the present invention, since the usability is improved, the industrial applicability will be high.

Claims

In a mobile terminal,

A camera for capturing an image including a subject;

A display unit displaying a captured image; And

Including a control unit,

The control unit

Set a subject from the captured image,

When the distance to the subject is changed, at least one of optical zoom control or digital zoom control of the photographed image is performed by adjusting a focal length of the camera to adjust the magnification of the photographed image. A mobile terminal that controls the size to look constant.
According to claim 1,

The control unit

Measure the distance to the set subject,

And determining the magnification of the optical zoom or the digital zoom using the distance.
According to claim 1,

The control unit

And determine the magnification of the optical zoom first, and determine the magnification of the digital zoom when the magnification for displaying the size of the subject constantly is out of the optical zoom range of the camera.
The method of claim 3, wherein

The control unit

When the magnification for constantly displaying the size of the subject is outside the range of the digital zoom,

And a message indicating that the display is out of the range of the optical zoom and the digital zoom.
According to claim 1,

The control unit

A mobile terminal for displaying the distance to the subject or the magnification of the optical zoom or the digital zoom on the display unit.
According to claim 1,

The control unit

When a gesture to enter the hitchcock zoom mode is input, the player enters the hitchcock zoom mode,

And when the distance between the mobile terminal and the subject decreases, reducing the at least one of the magnification of the optical zoom and the digital zoom to control the size of the subject displayed on the display unit.
According to claim 1,

The control unit

When a gesture to enter the hitchcock zoom mode is input, the player enters the hitchcock zoom mode,

And when the distance between the mobile terminal and the subject increases, at least one of the magnification of the optical zoom and the digital zoom is increased to control the size of the subject displayed on the display unit.
The method according to any one of claims 6 and 7,

The control unit

And determine the magnification of the optical zoom first, and determine the magnification of the digital zoom when the magnification for displaying the size of the subject constantly is out of the optical zoom range of the camera.
The method according to any one of claims 6 and 7,

The control unit

When the movement of the distance between the mobile terminal and the subject is restricted,

Set a range corresponding to the subject,

When the magnification of the captured image is changed by adjusting at least one of the magnification of the optical zoom or the digital zoom,

A mobile terminal for increasing the effect of the hitchcock zoom by fixing the size of the range corresponding to the subject.
According to claim 1,

Further comprising a sensor for detecting the movement of the mobile terminal,

The control unit

A mobile terminal for calculating a distance to the subject using the sensor.
In the operation method of a mobile terminal,

Photographing an image including a subject;

Displaying a captured image;

Setting a subject in the captured image; And

When the distance to the subject is changed, at least one of optical zoom control or digital zoom control of the photographed image is performed by adjusting a focal length of the camera to adjust the magnification of the photographed image. And controlling the size to look constant.
The method of claim 11, wherein

Measuring a distance to the set subject;

And determining the magnification of the optical zoom or the digital zoom using the distance.
The method of claim 11, wherein

Determining the magnification of the optical zoom or the digital zoom using the distance. Determining the magnification of the optical zoom first, and determining the magnification of the digital zoom when the magnification for constantly displaying the size of the subject is outside the range of the optical zoom.
The method of claim 13,

Determining the magnification of the optical zoom or the digital zoom using the distance.

When the magnification for constantly displaying the size of the subject is outside the range of the digital zoom,

Displaying a message indicating that the optical zoom and digital zoom are out of range on the display unit.
The method of claim 11, wherein

And displaying the distance to the subject or the magnification of the optical zoom or the digital zoom.
The method of claim 11, wherein

When the gesture for entering the hitchcock zoom mode is input, entering the hitchcock zoom mode; And

If the distance between the mobile terminal and the subject decreases, reducing the at least one of the magnification of the optical zoom and the digital zoom to control the size of the subject to be constantly displayed. Way.
The method of claim 11, wherein

When the gesture for entering the hitchcock zoom mode is input, entering the hitchcock zoom mode; And

If the distance between the mobile terminal and the subject is increased, increasing the at least one of the magnification of the optical zoom and the digital zoom, and controlling the size of the subject to be constantly displayed. Way.
The method of claim 16, wherein

And determining the magnification of the optical zoom first, and determining the magnification of the digital zoom when the magnification for constantly displaying the size of the subject is outside the range of the optical zoom of the camera.
The method of claim 16, wherein

When the movement of the distance between the mobile terminal and the subject is restricted,

Setting a range corresponding to the subject; And

When the magnification of the captured image is changed by adjusting at least one of the magnification of the optical zoom or the digital zoom, the mobile terminal further comprises the step of fixing the size of the range corresponding to the subject to increase the effect of the hitchcock zoom Method of operation.
The method of claim 11, wherein

Detecting the movement of the mobile terminal by a sensor;

A method of operating a mobile terminal for calculating a distance to the subject using the sensor.