KR20180056182A - Mobile terminal and method for controlling the same - Google Patents

Abstract

The present invention relates to a mobile terminal capable of photographing an image and, more specifically, relates to a mobile terminal fixing a size of an image of a subject displayed on a display unit of the mobile terminal even if a distance between the mobile terminal and the subject is changed; and a control method thereof. According to the present invention, the mobile terminal comprises: a camera to photograph an image including a subject; a display unit to display the photographed image; and a control unit. The control unit sets a subject in the photographed image and performs either or both of optical zooming control through focal length adjustment of the camera and digital zooming control of the photographed image in order to adjust a magnification ratio of the photographed image when a distance from the subject is changed, so as to allow a user to view the set subject with a constant size. Accordingly, provided are effects of photographing a subject by a constant size even if a distance between a mobile terminal and the subject is changed and representing a zoon-out track-in effect, so called Hitchcock effect.

Description

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

More particularly, the present invention relates to a mobile terminal in which the size of an image of a subject displayed on a display unit of a mobile terminal is fixed even if the distance between the mobile terminal and the subject changes, and a control method thereof .

A terminal can be divided into a mobile terminal (mobile / portable terminal) and a stationary terminal according to whether the terminal can be moved. The mobile terminal can be divided into a handheld terminal and a vehicle mounted terminal according to whether the user can directly carry the mobile terminal.

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

Such a terminal has various functions, for example, in the form of a multimedia device having multiple functions such as photographing and photographing of a moving picture, reproduction of a music or video file, reception of a game and broadcasting, etc. .

In order to support and enhance the functionality of such terminals, it may be considered to improve the structural and / or software parts of the terminal.

Generally, a mobile terminal includes a camera capable of photographing at least one of a front side and a rear side of the mobile terminal.

The camera included in the mobile terminal provides an optical zoom function and a digital zoom function, and it is possible to adjust the size of a subject by using the zoom function.

Various effects can be given by using the zoom function.

Therefore, providing various shooting effects using a camera of a mobile terminal is always an important concern, and various shooting effects are being studied.

An object of the present invention is to provide a mobile terminal in which a subject can be photographed with a constant 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 a zoom-out effect called a hitchcock effect.

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

According to an aspect of the present invention, there is provided 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 sets a subject in the captured image Performing at least one of an optical zoom adjustment by adjusting a focal length of the camera or a digital zoom adjustment of the photographed image to adjust a magnification of the photographed image when the distance from the subject changes, And controls the size of the mobile terminal to be constant.

According to another aspect of the present invention, there is provided an image processing method including the steps of: photographing an image including a subject; displaying a photographed image; setting a subject in the photographed image; Performing at least one of an optical zoom adjustment by adjusting a focal length of the camera to adjust magnification or a digital zoom adjustment of the photographed image to control the size of the set subject to be constant, Provides a method of operation.

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

According to at least one embodiment of the present invention, there is an effect of providing a mobile terminal in which a subject can be photographed with a constant size even when the distance between the mobile terminal and the subject changes.

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 as a zoom-out track called a hitchcock effect.

In addition, according to at least one embodiment of the present invention, when the camera of the mobile terminal is zoomed out, the mobile terminal can maximize the hitchcock zoom expression by maintaining the size of the subject.

1A is a block diagram illustrating a mobile terminal according to the present invention.
1B and 1C are conceptual diagrams illustrating an example of a mobile terminal according to the present invention in different directions.
FIGS. 2A to 3D are diagrams for explaining a method of uniformly displaying the size of an image of a subject according to an embodiment of the present invention.
FIG. 4A is a flowchart illustrating a method of uniformly displaying a size of an image of a subject according to an exemplary embodiment of the present invention. Referring to FIG.
FIGS. 4B to 5C are views for explaining a method of uniformly displaying the size of an image of a subject according to an embodiment of the present invention.
6A to 6C are views for explaining a hitchcock zoom effect according to an embodiment of the present invention.
7A to 7E are views for explaining a hitchcock zoom effect according to an embodiment of the present invention.
8A and 8B are views for explaining a hitchcock zoom effect using a front camera according to an embodiment of the present invention and its limitations.
9A to 9E are views for explaining a method of maximizing a hitch-cock zoom effect by fixing the size of a subject.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

Terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The mobile terminal described in this specification includes a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation device, a slate PC A tablet PC, an ultrabook, a wearable device such as a smartwatch, a smart glass, and a head mounted display (HMD). have.

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

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

The mobile terminal 100 includes a wireless communication unit 110, an input unit 120, a sensing unit 140, an output unit 150, an interface unit 160, a memory 170, a control unit 180, and a power supply unit 190 ), And the like. The components shown in FIG. 1A are not essential for implementing a mobile terminal, so that the mobile terminal described herein may have more or fewer components than the components listed above.

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

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

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

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

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

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

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

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

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

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

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

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

First, referring to the wireless communication unit 110, the broadcast receiving module 111 of the wireless communication unit 110 receives broadcast signals and / or broadcast-related information from an external broadcast management server through a broadcast channel. The broadcast channel may include a satellite channel and a terrestrial channel. Two or more broadcast receiving modules may be provided to the mobile terminal 100 for simultaneous broadcast reception or broadcast channel switching for at least two broadcast channels.

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

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

The wireless Internet module 113 is a module for wireless Internet access, and may be built in or externally attached to the mobile terminal 100. The wireless Internet module 113 is configured to transmit and receive a wireless signal in a communication network according to wireless Internet technologies.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Thus, when there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller. The touch controller processes the signal (s) and transmits the corresponding data to the controller 180. Thus, the control unit 180 can know which area of the display unit 151 is touched or the like. Here, the touch controller may be a separate component from the control unit 180, and may be the control unit 180 itself.

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

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

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

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

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

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

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

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

The sound output unit 152 may output audio data received from the wireless communication unit 110 or stored in the memory 170 in a call signal reception mode, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, The sound output unit 152 also outputs sound signals related to functions (e.g., call signal reception sound, message reception sound, etc.) performed in the mobile terminal 100. [ The audio output unit 152 may include a receiver, a speaker, a buzzer, and the like.

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

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

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

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

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

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

The identification module is a chip for storing various information for authenticating the use right of the mobile terminal 100 and includes a user identification module (UIM), a subscriber identity module (SIM) A universal subscriber identity module (USIM), and the like. Devices with identification modules (hereinafter referred to as "identification devices") can be manufactured in a smart card format. Accordingly, the identification device can be connected to the terminal 100 through the interface unit 160. [

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

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

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

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

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

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power necessary for operation of the respective components. The power supply unit 190 includes a battery, the battery may be an internal battery configured to be chargeable, and may be detachably coupled to the terminal body for charging or the like.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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 wireless interfaces and / or physical layers. For example, wireless interfaces that can be used by a communication system include Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Code Division Multiple Access (CDMA) ), Universal mobile telecommunication systems (UMTS) (in particular Long Term Evolution (LTE), Long Term Evolution-Advanced (LTE-A)), Global System for Mobile Communications May be included.

Hereinafter, for the sake of convenience of description, the description will be limited to CDMA. However, it is apparent that the present invention can be applied to all communication systems including an OFDM (Orthogonal Frequency Division Multiplexing) wireless communication system as well as a CDMA wireless communication system.

A CDMA wireless communication system includes at least one terminal 100, at least one base station (BS) (also referred to as a Node B or Evolved Node B), at least one Base Station Controllers (BSCs) , And a Mobile Switching Center (MSC). The MSC is configured to be coupled to a Public Switched Telephone Network (PSTN) and BSCs. The BSCs may be paired with the BS via 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 may be included in a CDMA wireless communication system.

Each of the plurality of BSs may comprise at least one sector, and each sector may comprise an omnidirectional antenna or an antenna pointing to a particular direction of radial emission 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 a plurality of frequency assignments may each have a specific spectrum (e.g., 1.25 MHz, 5 MHz, etc.).

The intersection of sector and frequency assignment may be referred to as a CDMA channel. The BS may be referred to as a base station transceiver subsystem (BTSs). In this case, a combination of one BSC and at least one BS may be referred to as a " base station ". The base station may also indicate a "cell site ". Alternatively, each of the plurality of sectors for a particular BS may be referred to as a plurality of cell sites.

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

In addition, a Global Positioning System (GPS) may be associated with the CDMA wireless communication system to identify the location of the mobile terminal 100. The satellite 300 aids in locating the mobile terminal 100. Useful location information may be obtained by two or more satellites. Here, the position of the mobile terminal 100 can be tracked using all the techniques capable of tracking the location as well as the GPS tracking technology. Also, at least one of the GPS satellites may optionally or additionally be responsible for satellite DMB transmission.

The location information module 115 included in the mobile terminal is for detecting, computing, or identifying the location of the mobile terminal, and may include a Global Position System (GPS) module and a WiFi (Wireless Fidelity) module. Optionally, the location information module 115 may perform any of the other functions of the wireless communication unit 110 to obtain data relating to the location of the mobile terminal, in addition or alternatively.

The GPS module 115 calculates distance information and accurate time information from three or more satellites and then applies trigonometry to the calculated information to accurately calculate three-dimensional current location information according to latitude, longitude, and altitude can do. At present, a method of calculating position and time information using three satellites and correcting an error of the calculated position and time information using another satellite is widely used. In addition, the GPS module 115 can 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 by using the GPS module in the shadow area of the satellite signal as in the room. Accordingly, a WPS (WiFi Positioning System) can be utilized to compensate the positioning of the GPS system.

The WiFi Positioning System (WPS) is a system in which a mobile terminal 100 uses a WiFi module included in the mobile terminal 100 and a wireless AP (wireless access point) transmitting or receiving a wireless signal with the WiFi module, Is a technology for tracking a location of a wireless local area network (WLAN) using WiFi.

The WiFi 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 certain wireless AP information is stored.

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

The Wi-Fi position location server extracts 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. The information of the wireless AP connected to the mobile terminal 100 may be transmitted to the Wi-Fi location server through the mobile terminal 100 or may be transmitted from the wireless AP to the Wi-Fi location server.

The information of the wireless AP to be extracted based on the location information request message of the mobile terminal 100 includes a MAC address, an SSID (Service Set IDentification), a Received Signal Strength Indicator (RSSI), a Reference Signal Received Power (RSRP) Reference Signal Received Quality), channel information, Privacy, Network Type, Signal Strength, and Noise Strength.

As described above, the Wi-Fi position location server can receive the information of the wireless AP connected to the mobile terminal 100 and extract the wireless AP information corresponding to the wireless AP to which the mobile terminal is connected from the pre-established database. In this case, the information of any wireless APs stored in the database includes at least one of MAC address, SSID, channel information, privacy, network type, radius coordinates of the wireless AP, building name, Available), the address of the AP owner, telephone number, and the like. At this time, in order to remove the wireless AP provided using the mobile AP or the illegal MAC address in the positioning process, the Wi-Fi location server may extract only a predetermined number of wireless AP information in order of RSSI.

Then, the Wi-Fi location server can extract (or analyze) the location information of the mobile terminal 100 using at least one wireless AP information extracted from the database. And compares the received information with the received wireless AP information to extract (or analyze) the location information of the mobile terminal 100.

As a method for extracting (or analyzing) the position information of the mobile terminal 100, a Cell-ID method, a fingerprint method, a triangulation method, and a landmark method can be utilized.

The Cell-ID method is a method of determining the position of the mobile station with the strongest signal strength among neighboring wireless AP information collected by the mobile terminal. Although the implementation is simple, it does not cost extra and it can acquire location information quickly, but there is a disadvantage that positioning accuracy is lowered when the installation density of the wireless AP is low.

The fingerprint method collects signal strength information by selecting a reference position in a service area, and estimates the position based on the signal strength information transmitted from the mobile terminal based on the collected information. In order to use the fingerprint method, it is necessary to previously convert the propagation characteristics into a database.

The triangulation method is a method of calculating the position of the mobile terminal based on the coordinates of at least three wireless APs and the distance between the mobile terminals. (Time of Arrival, ToA), Time Difference of Arrival (TDoA) in which a signal is transmitted, and the time difference between the wireless AP and the wireless AP, in order to measure the distance between the mobile terminal and the wireless AP. , An angle at which a signal is transmitted (Angle of Arrival, AoA), or the like.

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

Various algorithms can be utilized as a method for extracting (or analyzing) the location information of the mobile terminal.

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

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

As shown in FIG. 1A, a mobile terminal according to the present invention includes Bluetooth ™, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), UWB (Ultra Wideband), ZigBee, NFC Field Communication), and Wireless USB (Wireless Universal Serial Bus).

Among them, the NFC module provided in the mobile terminal supports the non-contact type short-range wireless communication between the terminals at a distance of about 10 cm. The NFC module may operate in either a card mode, a reader mode, or a P2P mode. In order for the NFC module to operate in the 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 UICC (e.g., a SIM (Subscriber Identification Module) or a USIM (Universal SIM)), a Secure micro SD and a sticker, or a logical medium For example, embeded SE (Secure Element)). Data exchange based on SWP (Single Wire Protocol) can be made between NFC module and security module.

When the NFC module is operated in the card mode, the mobile terminal can transmit the stored card information to the outside such as a conventional IC card. Specifically, if the mobile terminal storing the card information of the payment card such as a credit card or a bus card is brought close to the fare payment machine, the mobile local payment can be processed, and the mobile terminal storing the card information of the access card can be accessed If you are close to the time, the approval process for access may begin. Cards such as credit cards, transportation cards, and access cards are mounted on the security module in the form of an applet, and the security module can store card information on the mounted card. Here, the card information of the payment card may be at least one of a card number, balance, and usage details, and the card information of the access card may include at least one of a name, a number (e.g., It can be one.

When the NFC module is operated in the reader mode, the mobile terminal can read data from an external tag. At this time, the data received from the mobile terminal by the tag may be coded into a data exchange format (NFC Data Exchange Format) defined by the NFC Forum. In addition, the NFC Forum defines four record types. Specifically, the NFC forum defines four RTDs (Record Type Definitions) 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 control unit executes a browser (e.g., an Internet browser), and if the data received from the tag is a text type, the control unit can execute the text viewer. When the data received from the tag is a URI type, the control unit executes the browser or makes a telephone call, and if the data received from the tag is a general control type, it can execute appropriate operations according to the control contents.

When the NFC module is operated in a peer-to-peer (P2P) mode, the mobile terminal can perform P2P communication with another mobile terminal. At this time, LLCP (Logical Link Control Protocol) may be applied to P2P communication. For P2P communication, a connection can be created between the mobile terminal and another mobile terminal. At this time, the generated connection can be divided into a connectionless mode in which one packet is exchanged and terminated, and a connection-oriented mode in which packets are exchanged consecutively. Through P2P communications, data such as business cards, contact information, digital photos, URLs in electronic form, and setup parameters for Bluetooth and Wi-Fi connectivity can be exchanged. However, since the usable distance of NFC communication is short, the P2P mode can be effectively used to exchange small-sized data.

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

FIGS. 2A to 3D are diagrams for explaining a method of uniformly displaying the size of an image of a subject according to an embodiment of the present invention.

2A, the camera 121 of the mobile terminal 100 may photograph a subject 210 located on the front or back side of the mobile terminal 100.

The control unit 180 of the mobile terminal 100 can determine the size of the image including the subject 210 by the distance between the camera 121 of the mobile terminal 100 and the subject 210 and the magnification of the camera 121 have.

In one embodiment of the present invention, the magnification of the camera 121 may be determined by an optical zoom by the lens of the camera and a digital zoom by the control unit 180 of the mobile terminal 100. [

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

Digital zoom, on the other hand, means re-magnifying a portion of the digitized image, and also uses digital zoom to further magnify the image when optical zoom is at its limit.

Referring to FIGS. 2A to 2D, the mobile terminal 100 may photograph a subject 210 with a different magnification of the camera 121. FIG.

That is, even if the distance 220 between the mobile terminal 100 and the subject 210 is the same, the camera 121 can be photographed with a different magnification.

If the magnification of the camera 121 of the mobile terminal 100 is zoomed out, the size of the subject can be taken larger, but the angle of view for photographing becomes narrow. Conversely, when the magnification of the camera 121 of the mobile terminal 100 is zoomed out, The size of the image is smaller, but the angle of view that can be photographed is further reduced.

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 angle of view of the third angle 213.

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

That is, when the focal length of the lens of the camera 121 becomes long as in the first angle of view 211, the angle of view decreases and the subject included in the image is enlarged, but the number of objects that can be included in one image decreases .

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

Also, the magnification of the camera may be changed using the focal length of the lens as described above, but may be changed by adjusting the magnification of the digital zoom.

3A to 3D are views for explaining a method of displaying the same size of a subject in a case where the distance between the camera 121 and the subjects 210 and 310 is different as compared with FIGS. 2A to 2D.

3A, when the distance 220 between the camera 121 and the subject 210 is compared with the distance 320 between the camera 121 and the subject 310 in FIG. 3A, the distance between the camera 121 and the subject 310 The distance 320 between the camera 121 and the subject 210 is shorter than the distance 220 between the camera 121 and the subject 210 in FIG.

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 must be larger.

Specifically, when the size 221 of the subject image in FIG. 2B is compared with the size 321 of the subject image in FIG. 3B, it can be seen that the size of the subject image is different even though the subject is photographed at the same angle of view.

When the size 222 of the subject image in FIG. 2C, the size of the subject image 322 in FIG. 3C, the size 223 of the subject image in FIG. 2D and the size of the size 323 of the subject image in FIG. It can be confirmed that the size of the latter is displayed larger even though the subject is photographed at the same angle of view.

However, the size 221 of the subject image in FIG. 2B, the size of the subject image 323 in FIG. 3D, the size 222 of the subject image in FIG. 2C, and the size 321 of the subject image in FIG. Can be confirmed.

In this way, even when the distance between the camera 121 and the subject is different, the size of the subject can be expressed equally.

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

FIG. 4A is a flowchart illustrating a method of uniformly displaying a size of an image of a subject according to an exemplary embodiment of the present invention. Referring to FIG.

4A, the control unit 180 of the mobile terminal 100 displays an image including a subject on the display unit 151 through the camera 121, and recognizes the subject in the displayed image (S110)

In one embodiment, the control unit 180 of the mobile terminal 100 may display the image photographed by the camera 121 on the display unit 151.

In another embodiment, the control unit 180 of the mobile terminal 100 can recognize a subject in an image photographed by the camera 121. [ Specifically, the control unit 180 of the mobile terminal 100 may recognize an object positioned at the center of the image as a selected object. For example, referring to FIG. 4B, the object 401 to be photographed can be recognized as a subject.

However, when there are a plurality of objects, the control unit 180 of the mobile terminal 100 may recognize one of the plurality of objects as the selected object. For example, the most recognized object may be recognized as the selected object, or the focused object may be recognized as the selected object.

However, this example is merely an example of selecting a subject, and the subject can be selected in various ways.

When the user's gesture is input to the display unit 151, the control unit 180 of the mobile terminal 100 may determine the object corresponding to the gesture as the selected subject.

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

When the gesture is input, the control unit 180 of the mobile terminal 100 may determine the object corresponding to the gesture as the selected object.

In this way, the control unit 180 of the mobile terminal 100 may recognize the subject automatically by the user 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 one embodiment, the controller 180 of the mobile terminal 100 may determine the distance between the mobile terminal 100 and the subject.

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

Also, the controller 180 of the mobile terminal 100 can 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 is not limited in the present invention.

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

Specifically, an absolute distance between the mobile terminal 100 and the subject may be error-prone, 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, when the distance between the subject 401 and the user 411 is 3 m as shown in FIG. 4B, the size of the image of the subject 401 and the distance between the subject 402 and the user When the distance 411 is 3 m, the size of the image of the subject 401 is larger when the distance 411 is 3 m.

The size of the image of the subject 401 when the distance between the subject 401 and the user 411 is 3 m and the size of the subject 403 when the distance between the subject 403 and the user 413 is 6 m as shown in FIG. The size of the image of the subject 401 is smaller when the distance 411 is 3 m.

In this way, the controller 180 of the mobile terminal 100 can measure the relative distance between the mobile terminal 100 and the subject using the relative size of the image.

4A is again described.

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

In one embodiment, the control unit 180 of the mobile terminal 100 can 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, in step S120, The distance between the subject 100 and the subject can be measured and the change in the measured length can be recognized.

In another example, the control unit 180 of the mobile terminal 100 can 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 can 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 varies the magnification of the camera 121 to maintain a constant image size of the selected object.

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

FIGS. 4B to 5C are views for explaining a method of uniformly displaying the size of an image of a subject according to an embodiment of the present invention.

4B to 5C, a method of uniformly displaying the size of an image of an operation subject of the present invention will be described.

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

5A. The control unit 180 of the mobile terminal 100 may display the distance 521 or the imaging magnification 511 between the mobile terminal 100 and the subject on the display unit 151. In this case,

4B is a view showing that the mobile terminal 100 photographs the subject 401 at a distance 411 of 3 m. FIG. 5A is a view showing a state where an image photographed under the condition shown in FIG. FIG.

The control unit 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 is at the distance 411 of the subject 401 can do.

The control unit 180 of the mobile terminal 100 may display the distance 521 of the subject 401 on the display unit 151 of the mobile terminal 100. The controller 180 of the mobile terminal 100 may display the magnification 511 at which the mobile terminal 100 photographs the subject 401.

4B, when the mobile terminal 100 moves the subject 402 to a distance of 1 m (412), as shown in FIG. 4C, when the mobile terminal 100 photographs the subject 401 at a distance 411 of 3 m, The distance between the mobile terminal 100 and the subject can be changed.

When the distance between the mobile terminal 100 and the subject is shortened, the image of the subject should be larger if the magnification of the camera 121 is not changed.

5B, the magnification of the carrera 121 is changed from 4 to 1 so that an image 502 corresponding to the subject 402 is displayed on the image 501 corresponding to the subject 401 It can be controlled to be displayed in the same size.

4B, when the mobile terminal 100 moves the subject 403 at a distance of 6 m (see FIG. 4B), the distance between the subject 403 and the subject 403 413 so that the distance between the mobile terminal 100 and the subject can be changed.

If the distance between the mobile terminal 100 and the subject is distant, the image of the subject should be smaller if the magnification of the camera 121 is not changed.

5C, the magnification of the carer 121 is changed from 4 to 8 so that an image 503 corresponding to the subject 403 is displayed on the image 501 corresponding to the subject 401 It can be controlled to be displayed in the same size.

In another embodiment, the mobile terminal 100 photographs the subject 402 at a distance 412 of 1 m as shown in FIG. 4C, and the mobile terminal 100 moves the subject 403 at a distance of 6 meters 413 so that the distance between the mobile terminal 100 and the subject can be changed.

If the distance between the mobile terminal 100 and the subject is distant, the image of the subject should be smaller if the magnification of the camera 121 is not changed.

5B, the magnification of the carrera 121 is changed from 1 to 8 so that the image 503 corresponding to the subject 403 is moved to the image 502 corresponding to the subject 402 It can be controlled to be displayed in the same size.

That is, according to an embodiment of the present invention, the control unit 180 of the mobile terminal 100 may photograph an image including a subject, display the photographed image, and set a subject in the photographed image.

When the distance to the subject is different, the control unit 180 of the mobile terminal 100 adjusts the zoom ratio of the captured image by adjusting the optical zoom of the camera or adjusting the digital zoom of the photographed image. It is possible to control the size of the set subject to be constant.

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

However, if the magnification is changed using the optical zoom, there is no problem of lowering the image quality. However, if the magnification is changed using the digital zoom, a problem of deterioration of the image quality may occur.

Accordingly, in an embodiment of the present invention, the control unit 180 of the mobile terminal 100 determines the magnification of the optical zoom with priority, and determines whether the magnification for constantly displaying the size of the subject is within the range of the optical zoom of the camera You can use the digital zoom when it is off.

In this case, it is advantageous to obtain an image with higher image quality by using the optical zoom first within a certain distance.

6A to 6C are views for explaining a hitchcock zoom effect according to an embodiment of the present invention.

7A to 7E are views for explaining a hitchcock zoom effect according to an embodiment of the present invention.

Hitchcock zoom is a visual effect that creates a camera by pushing the subject with a zoom lens and moving the camera toward the subject along the track.

Within the frame, the subject remains the same size, but the background changes in relative size to the subject, resulting in a visual distortion effect that seems to distract the background suddenly.

Such a hitchcock zoom is called a zoom out track in.

However, in order to obtain the hitchcock zoom effect, there is a problem that the distance between the mobile terminal 100 and the subject is changed and the magnification of the camera 121 is changed. Also, the change of the magnification of the camera 121 should be such that the size of the image corresponding to the subject is kept constant.

Accordingly, there is a problem that it is difficult for the user of the mobile terminal 100 to manually change the distance between the mobile terminal 100 and the subject and to change the magnification of the camera 121. [

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

Also, the magnification 602 of the camera can be selected.

Also, the user of the mobile terminal 100 can move the mobile terminal in the front-rear direction of the subject as shown in FIGS. 6B and 6C.

For example, when the magnification of the camera of the mobile terminal 100 is equal to or greater than 8 and the mobile terminal 100 advances (611) as shown in FIG. 8B, the control unit 180 of the mobile terminal 100 lowers the magnification, It is possible to control the size of the image 613 corresponding to the image 613 to be constantly displayed.

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

In one embodiment, the controller 180 of the mobile terminal 100 may control the hitchcock zoom to operate when a gesture entering the hitchcock mode is input.

In addition, in one embodiment, the control unit 180 of the mobile terminal 100 may reduce at least one of the magnification of the optical zoom or the digital zoom when the distance between the mobile terminal 100 and the subject decreases, It is possible to control the size displayed on the display unit to be constant.

In one embodiment, the control unit 180 of the mobile terminal 100 increases at least one of a magnification of optical zoom or digital zoom when the distance between the mobile terminal 100 and the subject increases, It is possible to control the size displayed on the display unit to be constant.

However, if the magnification is changed using the optical zoom, there is no problem of lowering the image quality. However, if the magnification is changed using the digital zoom, a problem of deterioration of the image quality may occur.

Accordingly, in an embodiment of the present invention, the control unit 180 of the mobile terminal 100 determines the magnification of the optical zoom with priority, and determines whether the magnification for constantly displaying the size of the subject is within the range of the optical zoom of the camera You can use the digital zoom when it is off.

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

The effect of the hitchcock zoom will be described with reference to Figs. 7A to 7C.

It can be assumed that trees 703, 704, 705, 706, 713, 714, 715, and 716 have a subject 702 to be photographed as shown in FIG. 7A and are planted with a certain distance behind the subject 702. FIG.

The trees 703, 704, 705, 706, 713, 714, 715, and 716 are planted at regular intervals, and the trees 703, It is assumed to be symmetrical.

The control unit 180 of the mobile terminal 100 can photograph the subject 702 and the trees 703, 704, 705, 706, 713, 714, 715, and 716 using the camera 121. [ In addition, the control unit 180 of the mobile terminal 100 may set the subject 702 as a selected subject.

The camera 121 of the mobile terminal 100 is moved to the subject 702 and the trees 703, 704, and 713 in a state where the subject 702 is set to the selected subject and the subject is photographed at a narrow first angle of view 710, As shown in FIG. As described above, the narrow angle of view means that the focal length is long and thus the image is enlarged.

Assuming that the angle of view of the camera is kept constant when the mobile terminal 100 advances 701 in the case where the subject 702 is set to a selected subject and the camera is photographed at a narrow first angle of view 710 at a long distance, The image corresponding to the subject 702 becomes larger and the number of trees 703, 704, 705, 706, 713, 714, 715, 716 photographed in the background will gradually decrease.

However, in the case of 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 size of the tree 703, 704, 705, 706, 713, 714, 715, 716) is gradually increased.

When the mobile terminal 100 advances 701 in the case where the subject 702 is set to a selected subject and the user is photographed at a narrow first angle of view 710 at a long distance, the control unit 180 of the mobile terminal 100 In order to maintain the image corresponding to the subject 702 without being enlarged, the magnification should be reduced and the second angle of view 720 should be photographed with a wider angle of view.

In the case of photographing with the second angle of view 720 having a wider angle of view, the angle at which the mobile terminal can photograph is increased as shown in FIG. 7A.

Accordingly, even though the distance between the mobile terminal 100 and the subject 702 is closer, the trees 703, 704, 705, 706, 713, 714, 715, 704, 705, 713, 714, 715) increases.

However, when the camera 120 is changed from the first angle of view 710 to the second angle of view 720, although the distance between the mobile terminal 100 and the subject 702 is shortened, The size of the image corresponding to the photographed subject 702 may not change.

The number of trees included in the photographed image among the trees 703, 704, 705, 706, 713, 714, 715, and 716 in the case of changing from the first angle of view 710 to the second angle of view 720 increases do. The increase in the number of trees means that the size of the image of each of the trees 703, 704, 705, 706, 713, 714, 715, and 716 decreases.

It may also mean that the distance between the subject 702 and the trees 703, 704, 705, 706, 713, 714, 715, 716 is felt to be much smaller as the size of each of the trees is reduced.

Accordingly, when the angle of view is changed from the first angle of view 710 to the second angle of view 720, the mobile terminal 100 approaches the subject 702 and the zoom of the camera is distant, . In other words, although the size of the subject selected by the track zoom-out effect does not change, the background becomes farther away, so that 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 approaches the subject 702, the zoom of the camera is distant, When the first view angle 710 is changed from the second view angle 720 to the first view angle 710, that is, when the mobile terminal 100 is moved away from the subject 702 and the zoom of the camera becomes closer, You can also give a track-out zoom-in effect.

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

7B and 7C, FIG. 7B is a view taken at a first angle of view 710, and FIG. 7C is a view taken at a second angle of view 720. FIG.

7B and 7C, it is confirmed that the images 712 and 722 corresponding to the subject 702 are the same.

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 tree displayed on the screen among the background trees 703, 704, 705, 706, 713, 714, 715, It can be seen that the number of trees 703, 704, 705, 713, 714 and 715 is larger in the second angle of view than in the trees 703, 704 713 and 714 in the first angle of view.

On the other hand, the size of each of the trees in the first angle of view 710 is larger than the size of each of the trees in the second angle of view 720. Accordingly, it can be seen that the distance between the subject 702 and the trees 703, 704, 705, 706, 713, 714, 715, and 716 is closer to the first angle of view 710.

Therefore, according to the present invention, the size of the image corresponding to the subject 702 is displayed constantly, regardless of the distance between the mobile terminal 100 and the subject 702, while the size of the number of objects displayed in the background is changed This effect can be obtained only by adjusting the distance between the mobile terminal 100 and the subject 702, which is advantageous in that it is possible to obtain a camera shooting effect, which is difficult to obtain with the conventional mobile terminal.

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

In order to obtain the hitchcock zoom effect, the mobile terminal 100 must be physically moved. That is, the user of the mobile terminal 100 can perform the zoom-in or zoom-in of the track while moving directly, thereby obtaining the hitchcock effect.

However, when the mobile terminal 100 moves directly, there may arise a problem that the screen is shaken or a space in which the mobile terminal 100 can move is not secured.

8A, when the user of the mobile terminal 100 does not move and moves the user's arm of the mobile terminal 100 from the first position 801 to the second position 802 only (803), a sufficient hitch- There is a problem that the effect of zooming can not be obtained.

Generally, when a self-portrait is photographed using a front camera, there is a problem that the angle of view that can be moved is limited as shown in FIGS. 8B and 8C.

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

9A to 9E are views for explaining a method of maximizing a hitch-cock zoom effect by fixing the size of a subject.

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

The trees 911, 912, 913, 914 and 915 and the trees 921, 912, 921, 922, 923, 924 and 925 are planted at regular intervals, , 924, and 925 are assumed to be symmetrically left and right.

The control unit 180 of the mobile terminal 100 can 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 control unit 180 of the mobile terminal 100 may set the subject 910 as a selected subject.

When the subject 910 is set to a selected subject and the subject is photographed with a narrow first angle of view 930 at a long distance, the camera 121 of the mobile terminal 100 is able to photograph the subject 910 and the trees 911, 912, 921, 922). As described above, the narrow angle of view means that the focal length is long and thus the image is enlarged.

Assuming that the angle of view of the camera is kept constant when the mobile terminal 100 advances in the case where the subject 910 is set to the selected subject and the camera is photographed at a narrow first angle of view 910 at a long distance, And the number of trees 911, 912, 913, 914, 915, 921, 922, 923, 924, and 925 photographed in the background will gradually decrease.

However, in the case of using the hitchcock zoom as in the present invention, the magnitude of the image corresponding to the subject 910 is kept constant by the zoom in track-out effect, and the size of the trees 911, 912, 913, 914, 915, 921, 922, 923, 924, and 925) is gradually increased.

912, 913, 914, 915, 921, 922, 923, 924, and 925 in the background, even though the distance between the mobile terminal 100 and the subject 910 is closer It can be seen that the number of trees 911, 912, 913, 921, 922, and 923 increases.

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

When the first angle of view 930 is changed to the second angle of view 940, the number of trees included in the photographed image among the trees 911, 912, 913, 914, 915, 921, 922, 923, 924, The number increases. 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.

Further, the fact that the size of each of the trees is small may mean that the distance between the subject 910 and the trees 911, 912, 913, 914, 915, 921, 922, 923, 924, have.

This can be said to be the same as in Fig. 7A. However, there is a case where a sufficient hitch-cock zoom effect can not be obtained only by moving from the first angle of view 930 to the second angle of view 940 when the second angle of view 940 can not move forward any further.

However, in this case, it is possible to change from the second angle of view 940 to the third angle of view 950 by adjusting only the zoom magnification of the camera of the mobile terminal 100.

In this case, the size of the subject 910 is reduced, but the size of the tree 911, 912, 913, 914, 921, 921, 912, 913, 914, 921, 921, 922, 923, 924, 925 of the background trees 911, , 922, 923, 924) are increased.

However, in order to obtain the effect of the hitchcock zoom, it is necessary to keep the size of the selected object constant.

Accordingly, in one embodiment of the present invention, the control unit 180 of the mobile terminal 100 can control to maintain the size of the selected object and change only the background.

9B is a screen taken at the first angle of view 930, FIG. 9C is a screen taken at the second angle of view 940, FIG. 9D is a screen taken at the third angle of view 950, FIG. 9E is a screen in which the image corresponding to the subject 910 is enlarged on the screen photographed in the third angle of view 950. FIG.

9B and 9C, it is confirmed that the images 960 and 970 corresponding to the subject 910 are the same.

912, 913, 914, 915, 921, 922, 923, 924, and 925 are displayed on the screen because the angle of view of the second angle of view 940 is wider than the angle of view of the first angle of view 930 912, 913, 921, 922, and 923 at the second angle of view in comparison with the trees (911, 912, 921, and 922) at the first angle of view.

On the other hand, the size of each of the trees at the first angle of view 930 is larger than the size of each of the trees at the second angle of view 940. It can therefore be seen that the distance between the subject 910 and the trees 911, 912, 913, 914, 915, 921, 922, 923, 924 and 925 is closer to the first angle of view 930.

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 Can be confirmed.

It is important that the hitchcock effect keep the image of the subject constant. Therefore, by simply adjusting the magnification of the camera 121 in a state where the position of the mobile terminal 100 is fixed, the hitchcock zoom effect can not be obtained.

The control unit 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 from the first angle of view 930 and the second angle of view 940, 910 corresponding to the images 960, 910, 910, and 910, respectively.

9E, the size of the image 980 corresponding to the subject 910 at the third angle of view 940 is changed from the first angle of view 930 and the second angle of view 940 to the image 910 corresponding to the subject 910 960 and 970) to obtain an image 990 corresponding to the changed object 910. [

The control unit 180 of the mobile terminal 100 maintains 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 to maximize the effect of the hitchcock zoom . That is, when the magnification of the photographed image is changed by adjusting at least one of the optical zoom or the magnification of the digital zoom, the controller 180 of the mobile terminal 100 fixes the size of the range corresponding to the subject, The effect can be increased.

Therefore, according to the 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. The advantage of the hitchcock zoom effect can be obtained even when the self-photographing is performed using the forward camera of the mobile terminal 100 because of this advantage.

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

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

Claims (20)

In the mobile terminal,
A camera for photographing an image including a subject;
A display unit for displaying photographed images; And
And a control unit,
The control unit
Sets a subject in the photographed image,
Performing at least one of an optical zoom adjustment by adjusting a focal length of the camera or a digital zoom adjustment of the photographed image to adjust a magnification of the photographed image when the distance from the subject changes, And controls the size to be constant. The method according to claim 1,
The control unit
Measuring a distance to the set subject,
And determines the magnification of the optical zoom or the digital zoom using the distance. The method according to claim 1,
The control unit
Wherein the magnification of the digital zoom is determined when the magnification for displaying the size of the subject is out of the range of the optical zoom of the camera. The method of claim 3,
The control unit
When the magnification for constantly displaying the size of the subject is out of the range of the digital zoom,
And displays a message on the display unit that the optical zoom and the digital zoom are out of the range. The method according to claim 1,
The control unit
And displays the distance to the subject or the magnification of the optical zoom or the digital zoom on the display unit. The method according to claim 1,
The control unit
When a gesture entering the hitchcock zoom mode is input, the hitchcock zoom mode is entered,
Wherein at least one of the magnification of the optical zoom or the digital zoom is reduced when the distance between the mobile terminal and the subject is reduced so that the size of the subject displayed on the display unit is controlled to be constant. The method according to claim 1,
The control unit
When a gesture entering the hitchcock zoom mode is input, the hitchcock zoom mode is entered,
Wherein at least one of the magnification of the optical zoom or the digital zoom is increased when the distance between the mobile terminal and the subject increases so that the size of the subject displayed on the display unit is controlled to be constant. 8. The method according to one of claims 6 and 7,
The control unit
Wherein the magnification of the digital zoom is determined when the magnification for displaying the size of the subject is out of the range of the optical zoom of the camera. 8. The method according to one of claims 6 and 7,
The control unit
When movement of the distance between the mobile terminal and the subject is restricted,
A range corresponding to the subject is set,
When the magnification of the photographed image is changed by adjusting at least one of the magnification of the optical zoom or the digital zoom,
The size of the range corresponding to the subject is fixed to increase the effect of the hitchcock zoom. The method according to claim 1,
Further comprising a sensor for detecting movement of the mobile terminal,
The control unit
And calculates the distance to the subject using the sensor. A method of operating a mobile terminal,
Comprising: capturing an image including a subject;
Displaying a photographed image;
Setting a subject in the photographed image; And
Performing at least one of an optical zoom adjustment by adjusting a focal length of the camera or a digital zoom adjustment of the photographed image to adjust a magnification of the photographed image when the distance from the subject changes, And controlling the size of the mobile terminal to be constant. 12. The method of claim 11,
Further comprising the step of measuring a distance to the set subject,
And determining the magnification of the optical zoom or the digital zoom using the distance. 12. The method of claim 11,
And determining the magnification of the optical zoom or the digital zoom using the distance. Determining the magnification of the optical zoom in priority and determining the magnification of the digital zoom when the magnification for displaying the size of the subject is out of the optical zoom range. 14. The method of claim 13,
And 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 out of the range of the digital zoom,
And displaying a message indicating that the optical zoom and the digital zoom are out of the range on the display unit. 12. The method of claim 11,
Displaying a distance to the subject or a magnification of the optical zoom or the digital zoom. 12. The method of claim 11,
Entering a hitchcock zoom mode when a gesture entering the hitchcock zoom mode is input; And
Further comprising the step of, when the distance between the mobile terminal and the subject decreases, at least one of the magnification of the optical zoom or the digital zoom being reduced so as to constantly control the magnitude of the display of the subject Way. 12. The method of claim 11,
Entering a hitchcock zoom mode when a gesture entering the hitchcock zoom mode is input; And
Further comprising the step of, when the distance between the mobile terminal and the subject increases, controlling at least one of magnification of the optical zoom or the digital zoom to constantly display the size of the subject, Way. 18. The method according to one of claims 16 and 17,
Determining a magnification of the digital zoom in accordance with a magnification of the optical zoom and determining a magnification of the digital zoom when a magnification for displaying the size of the subject is out of the optical zoom range of the camera. 18. The method according to one of claims 16 and 17,
When movement of the distance between the mobile terminal and the subject is restricted,
Setting a range corresponding to the subject; And
Further comprising the step of adjusting the magnification of the photographed image by adjusting at least one of the magnification of the optical zoom or the digital zoom to increase the effect of the hitchcock zoom by fixing the magnitude of the range corresponding to the subject, Lt; / RTI > 12. The method of claim 11,
Further comprising the step of detecting a movement of the mobile terminal by a sensor,
And calculating a distance to the subject using the sensor.

Images