WO2016024668A1

WO2016024668A1 - Mobile terminal and control method therefor

Info

Publication number: WO2016024668A1
Application number: PCT/KR2014/010424
Authority: WO
Inventors: 민경연; 홍정표; 유성은; 이남수
Original assignee: 엘지전자 주식회사
Priority date: 2014-08-11
Filing date: 2014-11-03
Publication date: 2016-02-18
Also published as: KR102206243B1; KR20160019184A

Abstract

A mobile terminal is disclosed. A mobile terminal according to one embodiment of the present invention comprises: a display module; an interface module which receives a command for initiating at least one of a still picture photographing mode and a moving picture photographing mode; a controller for calculating a flexible threshold value for determining, on the basis of at least one or more data, whether there is backlight or not; an image data processor for controlling backlight compensation to be performed on the basis of the calculated flexible threshold value; and a memory for storing at least one or more image data photographed according to the mode.

Description

【Specification】

[Name of invention]

Mobile terminal and its control method

[1] The present invention relates to a mobile terminal and a control method thereof in which the use of the terminal can be implemented in consideration of user convenience.

Background Art

[2] The terminal may be classified into a mobile terminal (portable terminal) and a stationary terminal according to whether or not it is movable. The mobile terminal may be further classified into a handheld terminal and a vehicle mounted terminal according to whether a user can directly carry it.

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

[4] As terminals become more versatile, such terminals are multimedia devices having complex functions, such as photographing or playing video, playing music or video files, playing games or receiving broadcasts. ) Is implemented.

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

[6] Recently, most mobile terminals are equipped with a camera. For example, there is a mobile terminal to which a camera sensor capable of high resolution photography or an HDR high dynamic range) function is added. However, most of the technology trends to date have been focused on developing high-performance cameras in hardware. However, cameras of mobile terminals known to date have a certain limit to completely eliminate backlighting. It was costly and time consuming due to high performance camera development and deployment.

[Detailed Description of the Invention]

[Technical Challenges]

[7] An object of the present invention is to solve the aforementioned and other problems.

An object of an embodiment of the present invention is to propose a technique for effectively and automatically compensating for the image quality of a camera by extracting back light and a rate of back light.

[9] An object of another embodiment of the present invention is to provide a solution for adaptively adjusting the threshold value without using a single threshold value according to the prior art. will be.

Another object of another embodiment of the present invention is to provide a mobile terminal capable of blocking back light phenomenon in advance without using a high performance camera.

Technical problems to be achieved in the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned above will be clearly understood by those skilled in the art from the following description. Could be.

Technical Solution

According to an aspect of the present invention to achieve the above or another object, the mobile terminal, the display module, an interface for receiving a command for starting at least one of the mode for still image shooting or the mode for video recording A module, a controller for calculating a flexible threshold value for determining backlighting based on at least one or more data, and a back light compensat ion based on the calculated flexible reference value. An image data processor for controlling the map talk and a memory for storing at least one image data photographed according to the mode.

According to another aspect of the present invention, when the command for exiting the mode is received through the interface module, the display module may be configured to perform image data or backlight correction performed by the image data processor. Outputs additional information for selectively storing one or more original image data packs which have not been made in the memory.

Advantageous Effects

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

According to at least one of the embodiments of the present invention, it is possible to effectively compensate automatically the image quality of the camera by extracting whether or not the backlight and the rate of backlight.

[15] According to at least one of the embodiments of the present invention, there is provided a solution that adjusts the threshold value adaptively without using a single threshold value according to the prior art. do.

According to at least one of the embodiments of the present invention, there is provided a mobile terminal capable of blocking back light phenomenon in advance without using a high-performance camera.

Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, various changes and modifications within the spirit and scope of the present invention can be clearly understood by those skilled in the art, and therefore, specific embodiments, such as the detailed description and the preferred embodiments of the present invention, should be understood as given by way of example only.

[Brief Description of Drawings]

FIG. La is a block diagram illustrating a mobile terminal related to the present invention.

Lb and lc are conceptual views of one example of a mobile terminal, viewed from different directions.

2 is a conceptual diagram illustrating another example of a deformable mobile terminal according to the present invention.

3 is a perspective view illustrating an example of a watch-type mobile terminal according to another embodiment of the present invention.

4 is a perspective view illustrating an example of a glass type mobile terminal according to another embodiment of the present invention.

5 is a view for explaining a backlight phenomenon to be solved in the present invention. FIG. 6 is a diagram for additionally explaining FIG. 5.

7 is a block diagram including internal components of a mobile terminal according to an embodiment of the present invention.

FIG. 8 is a diagram for explaining the complementary view of FIG. 7.

9 is a flowchart illustrating a method for controlling a mobile terminal according to an embodiment of the present invention.

FIG. 10 is a flowchart illustrating another embodiment of implementing step S930 illustrated in FIG. 9.

FIG. 11 is a flowchart illustrating another embodiment of implementing step S940 illustrated in FIG. 9.

12 illustrates an image photographed by the prior art.

FIG. 13 is a diagram for describing a process of analyzing data of an image photographed in FIG. 12 according to another embodiment of the present invention.

14 is a diagram for describing a process of analyzing data of a photographed image according to another embodiment of the present invention.

FIG. 15 illustrates an image in which a backlight phenomenon is removed by one of embodiments of the present invention.

FIG. 16 illustrates an image captured by the prior art, in contrast to FIG. 15.

FIG. 17 illustrates additional information used by a mobile terminal to selectively store original image data or image data from which backlight is removed according to an embodiment of the present invention.

FIG. 18 is a diagram illustrating a state in which a mobile terminal distinguishes and stores original image data or image data from which backlighting is removed according to an embodiment of the present invention.

FIG. 19 is a diagram for describing a case in which a moving image is captured by a mobile terminal according to an embodiment of the present invention while a backlight phenomenon is detected.

20 is a diagram for describing a case in which a moving image is photographed by a mobile terminal according to an embodiment of the present invention in a state in which a backlight phenomenon is not detected. FIG. 21 is a diagram illustrating a list of moving images captured by FIGS. 19 and 20 by a mobile terminal according to an embodiment of the present invention.

22 is a view for explaining a process of reproducing a video photographed by FIGS. 19 and 20 by a mobile terminal according to an embodiment of the present invention. [Form for implementation of invention]

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

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

[43] When a component is said to be "connected" or "connected" to another component, it may be directly connected to or connected to the other component, but other components On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that no other component exists in the middle. .

[44] Singular expressions refer to plural expressions unless the context clearly indicates otherwise. Include.

In the present application, the term "comprises" or "having" is intended to indicate that there exists a feature, number, step, operation, component, part, or a combination thereof described in the specification, one or It should be understood that no other features or numbers, steps, operations, components, components or combinations thereof are present or excluded in advance.

[46] The mobile terminal described herein includes a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant, a portable multimedia player, a navigation player, Slate PC, tablet KXtablet PC, ultrabook, wearable device (e.g. smartwatch, smart glass, HMDChead mounted di splay) Etc. may be included.

However, it can be easily understood by those skilled in the art that the configuration according to the embodiments described herein may also be applied to fixed terminals such as digital TVs, desktop computers, digital signages, etc. You will know.

[0048] Referring to FIGS. La to lc, FIG. La is a block diagram illustrating a mobile terminal according to the present invention, and FIGS. Lb and lc are conceptual views of one example of the mobile terminal according to the present invention viewed from different directions. to be.

The mobile terminal 100 includes a wireless communication unit 110, an input unit 120, a detection unit 140, an output unit 150, an interface unit 160, a memory 170, a controller 180, and a power source. Supply unit 190 and the like. The components shown in FIG. La are not essential to implementing a mobile terminal, so a mobile terminal described herein may have more or fewer components than those listed above.

More specifically, the wireless communication unit 110 of the components, between the mobile terminal 100 and the wireless communication system, between the mobile terminal 100 and another mobile terminal 100, or the mobile terminal 100 It may include one or more modules to enable wireless communication between the server and an external server. In addition, the wireless communication unit ₁₁₀ is moved It may include one or more modules that connect the terminal 100 to one or more networks.

The wireless communication unit 110 may include at least one of the broadcast reception modules 111, the mobile communication modules 112, the wireless Internet modules 113, the short range communication modules 114, and the location information modules 115. It may include.

The input unit 120 may include a camera 121 or an image input unit for inputting a video signal, a microphone 122 for inputting an audio signal, or a user input unit for receiving information from a user. For example, it may include a touch key, a mechanical key, and the like.

The audio data or the 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 one or more sensors for sensing at least one of information in the mobile terminal, surrounding environment information surrounding the mobile terminal, and user information. For example, the sensing unit 140 may include a proximity sensor 141, an illuminance sensor 142, an il luminat ion sensor, a touch sensor, an acceleration sensor, a magnetic sensor ic sensor, gravity sensor (G_sensor), gyroscope sensor, mot ion sensor, RGB sensor, infrared sensor, infrared sensor, f inger scan sensor, ultrasonic Sensors (ultrasonic sensors), optical sensors (e.g. cameras (see page 121)), microphones (see phone 122), battery gauges, environmental sensors (e.g. barometers, hygrometers, Thermometer, radiation sensor, heat sensor gas sensor, etc.) may include at least one of a chemical sensor (for example, electronic nose, healthcare sensor, biometric sensor). Meanwhile, the mobile terminal disclosed herein may use a combination of information sensed by at least two or more of these sensors.

The output unit 150 is configured to generate an output related to visual, auditory, or tactile senses, and includes at least one of a display unit 151, an audio output unit 152, a hap tip mod 153, and an optical output unit 154. It may include one. The display unit 151 is layered with the touch sensor By forming a structure or integrally formed, it is possible to implement a touch screen. Such a touch screen may function as a user input unit ₁₂ 3 that provides an input interface between the mobile terminal 100 and the user, and may also provide an output interface between the mobile terminal 100 and the user.

The interface unit 160 serves as a path to various types of external devices connected to the mobile terminal 100. The interface unit 160 connects a device equipped with a wired / wireless headset port, an external floor cable port, a wired / wireless data port, a memory card port, and an identification module. At least one of a port, an audio I / 0 (Input / Output) port, a video I / 0 (Input / Output) port, and an earphone port may be included. In the mobile terminal 100, in response to an external device being connected to the interface unit 160, appropriate control associated with the connected external device may be performed.

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

In addition to the operation associated with the male program, the controller 180 typically controls the overall operation of the mobile terminal 100. The controller 180 may provide or process information or a function appropriate to a user by processing signals, data, information, etc. input or output through the above-described components or driving a grand program stored in the memory 170.

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

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

At least some of the above components may operate in concert with each other to implement an operation, control, or control method of the mobile terminal according to various embodiments described below. In addition, the operation, control, or control method of the mobile terminal may be implemented on the mobile terminal by driving at least one grand program stored in the memory 170.

Hereinafter, the components listed above will be described in detail with reference to FIG. La before looking at various embodiments implemented through the mobile terminal 100 described above.

First, the wireless communication unit 110 will be described. The broadcast reception modules 111 of the wireless communication unit 110 receive 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 reception modules may be provided to the mobile terminal 100 for simultaneous broadcast reception or broadcast channel switching for at least two broadcast channels.

The broadcast management server may mean a server that generates and transmits a broadcast signal and / or broadcast related information or a server that receives a previously generated broadcast signal and / or broadcast related information and transmits the same to a terminal. The broadcast signal may include not only a TV broadcast signal, a radio broadcast signal, and a data broadcast signal, but also a broadcast signal having a data broadcast signal combined with a TV broadcast signal or a radio broadcast signal.

The broadcast signal includes technical standards for transmitting and receiving digital broadcast signals (or Broadcast method, for example, ISO, IEC, DVB, ATSC, etc.) may be encoded according to at least one, and the broadcast receiving module 111 is the digital broadcast using a method suitable for the technical standards set by the technical standards It can receive a signal.

The broadcast associated information may mean information related to a broadcast channel, a broadcast program, or a broadcast service provider. The broadcast related information may also be provided through a mobile communication network. In this case, it may be received by the mobile communication module 112.

The broadcasting related information may include, for example, an Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB) or an Electronic Service Guide (ESG) of Digital Video Broadcast-Handheld (DVB-H). It can exist in various forms. The broadcast signal and / or broadcast related information received through the broadcast reception modules 111 may be stored in the memory 160.

[68] The mobile communication module 112 may include technical standards or communication schemes (eg, Global System for Mobile communicat ion), code division multiple access (CDMA), code division (CDMA2000) for mobile communication. Mul ti Access 2000), EV— DO (Enhanced Voice-Data Optimized or Enhanced Voice-Data Only), Wideband CDMA (WCDMA), High Speed Downl Ink Packet Access (HSDPA), High Speed Upl Ink Packet Access (HSUPA) And transmit and receive radio signals with at least one of a base station, an external terminal, and a server on a mobile communication network constructed according to Long Term Evolut ion (LTE) and Long Term Evolut ion-Advanced (LTE-A).

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

The wireless internet modules 113 refer to models for wireless internet access, and may be embedded or external to the mobile terminal 100. The wireless internet modules 113 are configured to transmit and receive wireless signals in a communication network in accordance with wireless internet technologies.

[71] Wireless Internet technologies include, for example, Wi-less LAN (WLAN), Wi-Fi (Wireless Fidel i ty), Wi-Fi (Wireless Fidel i ty), DLNACDital Living Living Network, Wireless Broadband (WiBro), Wor Id Interoperabi li ty for Microwave Access (HSDPA), High Speed Downl Ink Packet Access (HSDPA), High Speed Upl Ink Packet Access (HSUPA), Long Term Evolut ion (LTE), Long Term Evolut ion-Advanced (LTE-A), and the like. The mod 113 transmits and receives data according to at least one wireless Internet technology in a range including the Internet technologies not listed above.

[72] In view of the fact that wireless Internet access by WiBro, HSDPA, HSUPA, GSM, CDMA, WCDMA, LTE, LTE-A, etc. is made through a mobile communication network, the wireless Internet performing wireless internet access through the mobile communication network The module 113 may be understood as a kind of the mobile communication module 112.

The short range communication module 114 is for short range co-unicat ion, and includes Bluetooth ™, Radio Frequency Ident if icat ion, Infrared Data Associat ion (IrDA), Near field communication using at least one of Ultra Wideband (UWB), ZigBee, Near Field Communicat ion (NFC), Wireless-Fidelity (Wi-Fi), Wi-Fi Direct, and Wireless Universal Serial Bus (Wireless USB) technologies The local area communication module 114 may support the communication between the mobile terminal 100 and the wireless communication system through a local area network, between the mobile terminal 100 and another mobile terminal 100. Alternatively, the wireless terminal may support wireless communication between the mobile terminal 100 and a network in which another mobile terminal 100 (or an external server) is located.The short-range wireless communication network may be a local area wireless personal area network.

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

The location information module 115 is a module for obtaining a location (or current location) of a mobile terminal, and a representative example thereof is a Global Positioning System (GPS) module or a WiFi CWless Fidelity module. For example, when the mobile terminal utilizes the GPS modules, the mobile terminal can obtain the location of the mobile terminal using a signal transmitted from a GPS satellite. As another example, when the mobile terminal utilizes the Wi-Fi module, the mobile terminal may acquire the location of the mobile terminal based on the information of the wireless APOVireless Access Point (WP) transmitting or receiving the wireless signal with the Wi-Fi module. If necessary, the location information modules 115 may perform any function of the other modes of the wireless communication unit 110 in order to substitute or additionally obtain data regarding the location of the mobile terminal.

The value information modules 115 are used to obtain the location (or current location) of the mobile terminal, and are not limited to those that directly calculate or obtain the location of the mobile terminal.

Next, the input unit 120 is for inputting image information (or signal), audio information (or signal), data, or information input from a user, and for inputting image information, the mobile terminal 100 ) May include one or a plurality of cameras 121. The camera 121 processes an image frame of a still image or a moving image obtained by an image sensor in a video call mode or a photographing mode. The processed image frame may be displayed on the display unit 151 or stored in the memory 170. On the other hand, the plurality of cameras 121 provided in the mobile terminal 100 may be arranged to form a matrix structure, and through the camera 121 forming the matrix structure in this way, various angles or focuses are provided to the mobile terminal 100. The plurality of pieces of image information may be input. In addition, the plurality of cameras 121 may include a left image and a right image for implementing a stereoscopic image. To obtain, it can be arranged in a stereo structure.

The microphone 122 processes an external sound signal into electrical voice data. The processed voice data may be utilized in various ways depending on the function (or running application program) being performed in the mobile terminal 100. Meanwhile, various noise reduction algorithms may be implemented in the microphone 122 to remove noise generated in the process of receiving an external sound signal.

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

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

First, the proximity sensor 141 refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface, or an object present in the vicinity of black, without using mechanical force by using electromagnetic force or infrared rays. The proximity sensor 141 may be located at or near an inner region of the mobile terminal covered by the touch screen as described above. Proximity sensor 141 may be disposed.

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

[83] Meanwhile, for convenience of description, an action of allowing an object to be recognized without being in contact with the touch screen so that the object is located on the touch screen is called “proximi ty touch”. And the act of actually contacting an object on the touch screen is referred to as "contact touch". The position at which the object is in close proximity touch on the touch screen means a position at which the object is perpendicular to the touch screen when the object is in close proximity touch. The proximity sensor 141 may detect a proximity touch and a proximity touch pattern (for example, a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, and a proximity touch movement state). . On the other hand, the controller 180 processes the data (or information) sympathetic to the proximity touch operation and the proximity touch pattern detected through the proximity sensor 141 as described above, and further, the visual information corresponding to the processed data. Can be output on the touch screen. Furthermore, the controller 180 may control the mobile terminal 100 to process different operations or data (or information) according to whether the touch on the same point on the touch screen is a proximity touch or a touch touch. .

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

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

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

Meanwhile, the controller 180 may perform different control or perform the same control according to the type of the touch object, which touches the touch screen (or a touch key provided in addition to the touch screen). Whether to perform different control or the same control according to the type of the touch object may be determined according to the current operating state of the mobile terminal 100 or the running grand program.

Meanwhile, the above-described touch sensor and proximity sensor may be independently or combined, and may be a short (or wrap) touch, a long touch, a multi touch, a drag on a touch screen. Drag touch, flick touch, pinch-in touch, pinch-out touch, swype touch, hovering touch It is possible to sense a variety of touch, such as.

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

On the other hand, the camera 121, which has been described in terms of the configuration of the input unit 120, includes at least one of a camera sensor (eg, CCD, CMOS, etc.), a photo sensor (or image sensor), and a laser sensor It includes one.

The camera 121 and the laser sensor may be combined with each other to detect a touch of a sensing object on a 3D stereoscopic image. The photo sensor may be stacked on a display element, which is configured to scan a movement of a sensing object in proximity to the touch screen. More specifically, the photo sensor mounts a photo diode and a transistor (TR) in a row / column and scans contents mounted on the photo sensor by using an electrical signal that varies according to the amount of light applied to the photo diode. That is, the photo sensor calculates coordinates of the sensing object according to the amount of light change, and thus, the position information of the sensing object can be obtained.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, the display unit 151 may display execution screen information of an application program driven in the mobile terminal 100 or UKUser Interface (GUKGraphic 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 method such as a stereoscopic method (glasses method), an auto stereoscopic method (glasses-free method), and a projection method (holographic method) may be applied.

In general, a 3D stereoscopic image is composed of a left image (left eye image) and a right image (right eye image). A top-down method in which the left and right images are arranged up and down in one frame according to the way in which the left and right images are merged into three-dimensional stereoscopic images. L-to-R (left-to-right, side by side) method, which is placed in the form of tiles, and a checker board method that arranges pieces of the left and right images in tile form, and opens the left and right images. It is divided into an interlaced method in which units are alternately arranged in units or rows, and a time division method in which left and right images are alternately displayed by time.

In addition, the 3D thumbnail image generates a left image thumbnail and a right image thumbnail from the left image and the right image of the original image frame, respectively. Can be generated as an image. In general, a thumbnail refers to a reduced image or a reduced still image. The left image thumbnail and the right image thumbnail generated as described above may be displayed with a three-dimensional space by displaying left and right distances on the screen by a depth corresponding to the parallax between the left and right images.

The left image and the right image necessary for implementing the 3D stereoscopic image may be displayed on the stereoscopic display unit by the stereoscopic processing unit. The stereoscopic processor is configured to receive 3D images (images of the base view and images of the extended view) and set left and right images therefrom, or to convert 2D images to left and right images.

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

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

In addition to vibration, the haptic modal 153 includes a pin array vertically moving with respect to the contact skin surface, a jetting force or suction force of air through the injection or inlet, grazing to the skin surface, electrostatic force of the electrode, and the like. A variety of tactile effects can be generated, such as the effects of stimulation and the effect of reproducing a sense of texture using an endothermic or heat generating element.

The haptic modules 153 may not only deliver a tactile effect through direct contact, but may also be implemented so that a user may feel a tactile effect through a muscle sense such as a finger or an arm. Two or more haptic modules 153 may be provided according to a configuration aspect of the mobile terminal 100. The light output unit 154 outputs a signal for notifying occurrence of an event by using light of a light source of the mobile terminal 100. Examples of events generated in the mobile terminal 100 may be message reception, call signal reception, missed call, alarm, schedule notification, email reception, information reception through an application, and the like.

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

The interface unit 160 serves as a path with all external devices connected to the mobile terminal 100. The interface unit 160 receives data from an external device, receives power, transfers the power to each component inside the mobile terminal 100, or transmits data inside the mobile terminal 100 to an external device. For example, to connect devices equipped with wired / wireless headset ports, external floor electrical ports, wired / wireless data ports, memory card ports, and identification modules. The interface unit 160 may include a port, an audio 1/0 (input / out put) port, a video I / 0 (input / output) port, and an earphone port. .

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

In addition, when the mobile terminal 100 is connected to an external cradle, the interface unit 160 may be a passage through which power from the cradle is supplied to the mobile terminal 100 or may be provided by the user in the cradle. Various command signals inputted may be passages to the mobile terminal 100. Various command signals or power input from the cradle may operate as signals for recognizing that the mobile terminal 100 is correctly mounted on the cradle. The memory 170 may store a program for the operation of the controller 180 and may temporarily store input / output data (eg, a phone book, a message, a still image, a video, etc.). The memory 170 may store data regarding vibration and sound of various patterns output when a touch input on the touch screen is performed.

The memory 170 may include a flash memory type, a hard disk type, an SSD type, a solid state disk type, an SDD type, and a multimedia card micro type. card micro type), card type memory (e.g. SD £ is XD memory, etc.), random access memory (RAM), static random access memory (SRAM), read—only memory (ROM), EEPR0M ( The storage medium may include at least one type of storage medium such as electrically ly erasable programmable read-only memory (PR0M), programmable read-only memory (PR0M), magnetic memory, magnetic disk, and optical disk. The mobile terminal 100 may be operated in connection with a web storage that performs a storage function of the memory 170 on the Internet.

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

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

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

In addition, the power supply unit 190 may be provided with a connection port, the connection port may be configured as an example of the interface 160 that is electrically connected to the outer layer electric power supply for powering the battery layer. have.

As another example, the power supply unit 190 may be configured to layer the battery in a wireless manner without using the connection port. In this case, the power supply unit 190 uses one or more of an inductive coupling based on a magnetic induction phenomenon or a magnetic resonance coupling based on an electromagnetic resonance phenomenon from an external wireless power transmitter. Power can be delivered.

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

Referring to FIGS. 1B and lc, the disclosed mobile terminal 100 includes a terminal body in the form of a bar. However, the present invention is not limited thereto and may be applied to a variety of structures including a watch type, a clip type, a glass type, or a folder type, a flip type, a slide type, a swing type, and a swivel type in which two or more bodies are relatively movable. . Although this may relate to a particular type of terminal, a description of a particular type of mobile terminal may generally apply to other types of mobile terminals.

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

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

[118] the front of the terminal body, the display unit 151 can output the information is ^"batch have. As illustrated, the window 151a of the display unit 151 may be mounted to the front case 101 to form the front surface of the terminal body together with the front case 101.

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

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

The cases 101, 102, and 103 may be formed by injecting a synthetic resin, or may be formed of a metal, for example, stainless steel (STS), aluminum (A1), titanium (Ti), or the like.

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

On the other hand, the mobile terminal 100 may be provided with a waterproof portion (not shown) to prevent water from penetrating into the terminal body. For example, the waterproof portion is provided between the left 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, When combined, it may include a waterproof member for sealing the internal space.

The mobile terminal 100 includes a display unit 151, a crab 1 and second sound output units 152a and 152b, a proximity sensor 141, an illuminance sensor 142, an optical output unit 154, and a crab 1; And second camera 121a, 121b), first and second manipulation units 123a and 123b, a microphone 122, an interface unit 160, and the like.

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

However, these configurations are not limited to this arrangement. These configurations may be excluded or replaced as needed or disposed on other sides. For example, the first manipulation unit 123a may not be provided on the front surface of the terminal body, and the second sound output unit 152b may be provided on the side of the terminal body instead of the rear surface of the terminal body.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, the display unit 151 may include execution screen information of an application program driven by the mobile terminal 100, or a UKUser Interface based on such execution screen information).

Graphical User Interface (GUI) information can be displayed.

The display unit 151 includes a liquid crystal display (LCD), a thin film transistor-l iquid crystal display (LCD), an organic light emitting diode (organic 1 ight-emitting) diodes, OLEDs), flexible displays, 3D displays, and e-ink displays.

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

The display unit 151 may include a touch sensor that senses a touch on the display unit 151 so as to receive a control command by a touch method. By using this, when a touch is made to the display unit 151, the touch sensor is Sensing a touch, the controller 180 may generate a control command for the touch based on the touch. The content input by the touch method may be a letter or a number, or may be a menu item that can be indicated or designated in various modes.

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

As such, the display unit 151 may form a touch screen together with a touch sensor, and in this case, the touch screen may function as a user input unit 123 (see FIG. La). In some cases, the touch screen may replace at least some functions of the first manipulation unit 123a.

The first sound output unit 152a may be implemented as a receiver for transmitting a call sound to a user's ear, and the second sound output unit 152b may include a loudspeaker for outputting various alarm sounds or multimedia reproduction sounds. It may be implemented in the form of a (loud speaker).

In the window 151a of the display unit 151, an acoustic hole for emitting sound generated from the crab 1 sound output unit 152a may be formed. However, the present invention is not limited thereto, and the sound may be configured to be emitted along an assembly gap between the structures (for example, a gap between the window 151a and the front case 101). In this case, an externally formed hole may be invisible or hidden for sound output, thereby simplifying the appearance of the mobile terminal 100.

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

The first camera 121a is connected to the image sensor in the shooting mode or the video call mode. Image frames of still images or moving images obtained are processed. The processed image frame may be displayed on the display unit 151 and stored in the memory 170.

The first and second manipulation units 123a and 123b are examples of the user input unit 123 that is operated to receive a command for controlling the operation of the mobile terminal 100, and also as a manipulating portion. Collectively. The first and second manipulation units 123a and 123b may be adopted in any manner as long as it is a tactile manner in which the user manipulates the touch, push, or the like while having a tactile feeling. In addition, the first and second manipulation units 123a and 123b may be employed in such a manner that the first and second manipulation units 123a and 123b are operated without a tactile feeling by the user through proximity touch, hovering touch, or the like.

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

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

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

The rear input unit may be disposed to overlap the display unit 151 on the front side in the thickness direction of the terminal body. For example, when the user grips the terminal body with one hand, the rear input unit may be easily manipulated using the index finger. It may be disposed at the upper end. However, the present invention is not necessarily limited thereto, and the position of the rear input unit may be changed.

As described above, when the rear input unit is provided at the rear of the terminal body, a new user interface using the same may be implemented. In addition, when the touch screen or the rear input unit described above replaces at least some functions of the first operation unit 123a provided on the front of the terminal body, and the first operation unit 123a is not disposed on the front of the terminal body, The display unit 151 may be configured with a larger screen.

On the other hand, the mobile terminal 100 may be provided with a fingerprint recognition sensor for recognizing a user's fingerprint, the controller 180 may use the fingerprint information detected through the fingerprint recognition sensor as an authentication means. The fingerprint recognition sensor may be built in the display unit 151 or the user input unit 123.

The microphone 122 is configured to receive a user's voice or other voice signal. The microphone 122 may be provided at a plurality of locations and configured to receive stereo sound.

The interface unit 160 serves as a path for connecting the mobile terminal 100 to an external device. For example, the interface unit 160 may be connected to another device (eg, earphone or external speaker), a port for short-range communication (for example, an infrared port (IrDA port), or a Bluetooth port (Bluetooth). Port), a wireless LAN port, etc.], or a power supply terminal for supplying power to the mobile terminal 100. The interface unit 160 may be implemented in the form of a socket for receiving an external card, such as a SIM (Subscribing Identifier Module) or a User Identity Module (UIM), a memory card for storing information.

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

The second camera 121b may include a plurality of lenses arranged along at least one line. The plurality of lenses may be arranged in a matrix (ixr ix) shape. Such a camera may be referred to as an 'array camera'. The second camera 121b is an array In the case of the camera, a plurality of lenses can be used to capture an image, 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.

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 to implement a speakerphone mode during a call.

The terminal body may be provided with at least one antenna for wireless communication. The antenna may be 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. La) may be configured to be pulled out from the terminal body. Alternatively, the antenna may be formed in a film type and attached to the inner side of the rear cover 103, or may be configured such that a case containing a conductive material functions as an antenna.

The terminal body is provided with a power supply unit 190 (refer to FIG. La) for supplying power to the mobile terminal 100. The power supply unit 190 may include a battery 191 embedded in the terminal body or detachably configured from the outside of the terminal body.

The battery 191 may be configured to receive power through a power cable connected to the interface unit 160. In addition, the battery 191 may be configured to enable wireless layering through the wireless layer electric device. The wireless layer can be implemented by a magnetic induction method or a resonance method (magnetic resonance method).

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

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

Meanwhile, in the present invention, the information processed in the mobile terminal may be displayed using a flexible display. Hereinafter, this will be described in more detail with reference to the accompanying drawings.

2 is a conceptual view illustrating another example of a deformable mobile terminal 200 according to the present invention.

As shown, the display unit 251 may be configured to be deformable by an external force. The deformation may be at least one of bending, bending, folding, curling, and curling of the display unit 251. The deformable display unit 251 may be referred to as a 'flexible display unit'. Herein, the flexible display unit 251 may include both a general flexible display, an electronic paper, and a combination thereof. In general, mobile terminal 200 may include features of or similar to that of mobile terminal 100 of FIGS.

The general flexible display is a light and durable display that is fabricated on a thin and flexible substrate capable of bending, bending, folding or curling like paper, while maintaining the characteristics of a conventional flat panel display.

In addition, electronic paper is a display technology to which the characteristics of general ink are applied. The use of reflected light may be different from that of a conventional flat panel display. Electronic paper can change information using twisted balls or electrophoresis using caps.

In a state in which the flexible display unit 251 is not deformed (for example, having an infinite curvature radius, hereinafter referred to as a first state), the display area of the flexible display unit 251 is flat. do. In the state deformed by the force in the first state (for example, a state having a finite radius of curvature, hereinafter referred to as a second state), the display area may be a curved surface. As shown above The information displayed in the second state may be visual information output on the curved surface. Such visual information is implemented by independently controlling the light emission of sub-pixels arranged in a matrix. The unit pixel refers to a minimum unit for implementing one color.

The flexible display unit 251 may be placed in a bent state (eg, bent vertically or horizontally) instead of being flat in the first state. In this case, when an external force is applied to the flexible display unit 251, the flexible display unit 251 may be deformed into a flat state (or less curved state) or more curved state.

Meanwhile, the flexible display unit 251 may be combined with a touch sensor to implement a flexible touch screen. When a touch is made with respect to the flexible touch screen, the controller 180 (see FIG. La) may perform a control to touch the touch input. The flexible touch screen may be configured to detect a touch input not only in the first state but also in the second state.

On the other hand, the mobile terminal 200 according to the present modification may be provided with deformation detection means for detecting the deformation of the flexible display unit 251. Such deformation detection means may be included in the sensing unit 140 (see FIG. La).

The deformation detection means may be provided in the flexible display unit 251 or the case 201 to detect information related to deformation of the flexible display unit 251. Here, the information related to the deformation may include a direction in which the flexible display unit 251 is deformed, a degree of deformation, a deformation position, a time of deformation, and an acceleration in which the deformable flexible display unit 251 is restored. In addition, due to the bending of the flexible display unit 251 may be a variety of information that can be detected.

In addition, the controller 180 changes the information displayed on the flexible display unit 251 based on the information related to the deformation of the flexible display unit 251 detected by the deformation detecting means, or A control signal for controlling the function of 200 may be generated.

On the other hand, the mobile terminal 200 according to the present modification of the flexible display unit 251 A housing 201 may be included. The case 201 may be configured to be deformable together with the flexible display unit 251 by an external force in consideration of characteristics of the flexible display unit 251.

In addition, a battery (not shown) included in the mobile terminal 200 may also be configured to be deformable together with the flexible display unit 251 by an external force in consideration of characteristics of the flexible display unit 251. In order to implement the battery, a stack and folding method in which battery cells are stacked up may be applied.

The state deformation of the flexible display unit 251 is not limited only by an external force. For example, when the flexible display unit 251 has the first state, the flexible display unit 251 may be transformed into the second state by a command of a user or an application.

On the other hand, the mobile terminal can be extended to a wearable device that can be worn on the body beyond the dimensions that the user mainly uses in the hand. Such wearable devices include a smart watch, a smart glass, and a head mounted di splay (HMD). Hereinafter, examples of the mobile terminal extended to the wearable device will be described.

The wearable device may be configured to exchange (or interlock) data with another mobile terminal 100. The short range communication modules 114 may detect (or recognize) a wearable device that can communicate around the mobile terminal 100. Further, when the detected wearable device is a device authenticated to communicate with the mobile terminal 100, the controller 180 wears at least a portion of data processed by the mobile terminal 100 through the short range communication module 114. Can send to the device. Therefore, the user may use data processed by the mobile terminal 100 through the wearable device. For example, when a call is received by the mobile terminal 100, a phone call may be performed through the wearable device, or when the message is received by the mobile terminal 100, the received message may be confirmed through the wearable device. .

3 illustrates movement of a watch type related to another embodiment of the present invention. A perspective view showing an example of the terminal 300.

Referring to FIG. 3, the watch-type mobile terminal 300 includes a main body 301 having a display unit 351 and a band 302 connected to the main body 301 so as to be worn on a wrist. Include. In general, mobile terminal 300 may include features that are the same or similar to that of mobile terminal 100 of FIGS.

The main body 301 includes a case for forming an appearance. As shown, the case may include a first case 301a and a second case 301b that provide an internal space for accommodating various electronic components. However, the present invention is not limited thereto, and one case may be configured to provide the internal space so that the mobile terminal 300 of the unibody may be implemented.

The watch type mobile terminal 300 is configured to enable wireless communication, and the main body 301 may be provided with an antenna for wireless communication. On the other hand, the antenna can extend its performance using a case. For example, a case containing a conductive material may be configured to be electrically connected to the antenna to extend the ground area or the radiation area.

The display unit 351 may be disposed on the front surface of the main body 301 to output information, but the display unit 351 may be provided with a touch sensor to implement a touch screen. As shown, the window 351a of the display unit 351 may be mounted on the first case 301a to form the front surface of the terminal body together with the first case 301a.

The main body 301 may be provided with an audio output unit 352, a camera 321, a microphone 322, a user input unit 323, and the like. When the display unit 351 is implemented as a touch screen, the display unit 351 may function as the user input unit 323, and thus a separate key may not be provided in the main body 301.

The band 302 is worn on the wrist to surround the wrist, and may be formed of a flexible material to facilitate wearing. For example, the three bands 302 may be formed of leather, rubber, silicone, synthetic resin, or the like. In addition, the band 302 is configured to be detachable to the main body 301, the user can be configured to be replaced with various types of bands according to taste. Meanwhile, the band 302 may be used to extend the performance of the antenna. For example, the band may include a ground extension (not shown) that is electrically connected to the antenna to extend the ground area.

The band 302 may be provided with a fastener 302a. The fastener 302a may be embodied by a buckle, a hook structure capable of snap-f it, a velcro (trade name), or the like, and may include elastic sections or materials. Can be. In this figure, an example in which the fastener 302a is implemented in the form of a buckle is shown.

4 is a perspective view illustrating an example of a glass type mobile terminal 400 according to another embodiment of the present invention.

The glass type mobile terminal 400 may be configured to be worn on the head of a human body, and may have a frame part (case, housing, etc.) therefor. The frame portion may be formed of a flexible material to facilitate wearing. In the drawing, the frame part includes a first frame 401 and a second frame 402 of different materials. In general, the mobile terminal 400 may include features of or similar to the features of the mobile terminal 100 of FIGS.

The frame part is supported by the head and provides a space for mounting various components. As shown in the drawing, an electronic component such as a control module 480, a sound output module 452, and the like may be mounted in the frame unit. In addition, a lens 403 covering at least one of the left eye and the right eye may be detachably mounted to the frame portion.

The control module 480 is configured to control various electronic components provided in the mobile terminal 400. The control mode 480 may be understood as a configuration corresponding to the controller 180 described above. In this figure, the control modules 480 are illustrated in the frame portion on one side head. However, the position of the control modules 480 is not limited thereto.

The display unit 451 may be implemented in the form of a head mounted display (HMD). The HMD form is a display method mounted on the head and showing an image directly in front of the user's eyes. When the user wears the glass type mobile terminal 400, the image can be directly provided in front of the user's eyes. The display unit 451 may be disposed on at least one of the left eye and the right eye. In this figure, the display unit 451 is located at a portion corresponding to the right eye so that an image can be output toward the right eye of the user.

The display unit 451 may project an image to the eyes of a user using a prism. In addition, the prism can be formed translucent so that the user can see the projected image together with the general field of view (the range the user sees through the eye) together.

As described above, the image output through the display unit 451 may be viewed by overlapping with the general field of view. The mobile terminal 400 may provide an augmented reality (AR) that displays a single image by superimposing a virtual image on a real image or a background using the characteristics of the display.

The camera 421 is disposed adjacent to at least one of the left eye and the right eye, and is formed to capture an image of the front. Since the camera 421 is located adjacent to the eye, the camera 421 may acquire a scene viewed by the user as an image.

In this drawing, the camera 421 is illustrated in the control module 480, but is not necessarily limited thereto. The camera 421 may be installed in the frame unit, or may be provided in plural to acquire a stereoscopic image.

The glass type mobile terminal 400 may include user input units 423a 423b operated to receive a control command. The user input units 423a and 423b may be adopted in any manner as long as the user is operating a tactile sense while touching or pushing. In the drawing, the frame unit and the control modules 480 are provided with push and touch input user input units 423a and 423b, respectively.

In addition, the glass-type mobile terminal 400 may be provided with a microphone (not shown) for receiving sound and processing it as electrical voice data, and sound output modules 452 for outputting sound. The sound output modules 452 may be configured to transmit sound in a general sound output manner or a bone conduction manner. If the sound output module 452 is implemented in a bone conduction manner, when the user wears the mobile terminal 400 The sound output module 452 is in close contact with the head and vibrates the skull to transmit sound.

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

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

In the following description, for convenience of explanation, the description will be limited to CDMA. However, it is apparent that the present invention can be applied to all communication systems including not only a CDMA wireless communication system but also a 0rthogonal frequency division multiplexing (FDM) wireless communication system.

In the CDMA wireless communication system, at least one terminal 100, at least one base station (Base Station, BS (may be referred to as Node B or Evolved Node B)), and at least one base station controller (Base Station) Controllers, BSCs), and Mobile Switching Centers (MSCs). The MSC is configured to connect with the Public Switched Telephone Network (PSTN) and BSCs. The BSCs may be connected to the BS through a backhaul line. The backhaul line may be provided according to at least one of El / Tl, ATM, IP, PPP, Frame Relay, HDSL, ADSL, or xDSL. Thus, a plurality of BSCs can be included in a CDMA wireless communication system.

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

The intersection of the sector and the frequency allocation may be called a CDMA channel. BSs may be called Base Station Transceiver Subsystems (BTSs). In this case, one BSC and at least one BS may be collectively called a base station. The base station may also indicate "sal site", or each of the plurality of sectors for a particular BS may be bled to a plurality of sal sites.

The broadcast transmitter (BT) transmits a broadcast signal to the terminals 100 operating in the system. The broadcast reception modules 111 shown in FIG. La are provided in the terminal 100 to receive broadcast signals transmitted by the BT.

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

The location information modules 115 provided in the mobile terminal are used to detect, calculate, or identify the location of the mobile terminal. Examples of the location information modules 115 may include global position system (GPS) models and wireless fidelity (WiFi) models. have. If necessary, the location information modules 115 may perform any of the other modes of the wireless communication unit 110 to obtain data regarding the location of the mobile terminal, alternatively or additionally.

The GPS modules 115 calculate distance information and accurate time information away from three or more satellites, and then apply triangulation to the calculated information, thereby providing three-dimensional current position information according to latitude, longitude, and altitude. Can be calculated accurately. Currently, a method of calculating position and time information using three satellites and correcting the error of the calculated position and time information using another satellite is widely used. In addition, the GPS modules 115 may calculate speed information by continuously calculating the current position in real time. However, GPS shades may not be used in the shaded areas of satellite signals such as indoors. It is difficult to accurately measure the position of the mobile terminal by using. Accordingly, in order to compensate for GPS positioning, a Wi-Fi Positioning System (WPS) may be utilized.

The Wi-Fi location tracking system (WPS) uses a WiFi module provided in the mobile terminal 100 and a wireless access point (AP) that transmits or receives a wireless signal with the WiFi modules. Also, as a technology for tracking the location of the mobile terminal 100, it refers to a WLANC based location positioning technology using WiFi.

The Wi-Fi location tracking system may include a Wi-Fi location server, a mobile terminal 100, a wireless AP connected to the mobile terminal 100, and a database storing arbitrary wireless AP information.

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

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

Based on the location information request message of the mobile terminal 100, the extracted information of the wireless AP includes a MAC Address, a Service Set IDent if icat ion (SSID), a Received Signal Strength Indicator (RSS), and an RSRP (Reference). It may be at least one of Signal Received Power), RSRQCReference Signal Received Quality, Channel Information, Pr ivacy, Network Type, Signal Strength, and Noise Strength.

As described above, the Wi-Fi positioning server receives the information of the wireless AP connected to the mobile terminal 100 and extracts the wireless AP information corresponding to the wireless AP to which the mobile terminal is connected from the pre-established database. . At this time, the information of any wireless AP stored in the database is MAC Address, SSID, channel information, Pr ivacy, Network Type, latitude and longitude coordinates of the wireless AP, the name of the building where the wireless AP is located, the number of floors, indoor details Location information (GPS coordinates available), AP owner's address, phone number, and the like can be. In this case, in order to remove a wireless AP provided by using a mobile AP or an illegal MAC address in the positioning process, the Wi-Fi positioning server may extract only a predetermined number of wireless AP information in ascending order of RSSI.

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

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

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

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

The triangulation method 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. In order to measure the distance between the mobile terminal and the wireless AP, the signal strength is converted into distance information, the time at which the radio signal is transmitted (Time of Arrival (ToA)), the time difference at which the signal is transmitted (Time Difference of Arr ival, TDoA), angle of signal transmission (Angle of Arr ival, AoA), and the like.

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

[213] In addition to the enumerated methods, various algorithms can calculate the location information of the mobile terminal. It can be used as a method for extraction (or analysis).

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

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

As described above with reference to FIG. La, the mobile terminal according to the present invention includes Bluetooth (h: Bluetooth), Radio Frequency Identification (RFID), Infrared Data Association (IrDA), UWBCUltra Wideband, ZigBee, Short-range communication technologies such as NFCCNear Field Communication (Wireless Field Communication) and Wireless USB (Wireless Universal Serial Bus) may be applied.

Among these, the NFC module provided in the mobile terminal supports contactless short-range wireless communication between terminals at a distance of 10 cm. The NFC module can operate in any of the card mode, reader mode and P2P mode. In order for the NFC modules to operate in a card mode, the mobile terminal 100 may further include a security module for storing card information. Here, the security mode may be a physical medium such as an UlCC Jniversal Integrated Circuit Card (ULC) (eg, Subscriber Identification Module (SlM) or Universal SIM (USIM)), a secure micro SD, and a sticker, or a logical medium (eg, embedded SECSecure element). Data exchange based on SWP (Single Wire Protocol) may be performed between the NFC module and the security modules.

When the NFC module is operated in the card mode, the mobile terminal can transmit the card information stored like the conventional IC card to the outside. Specifically, when the mobile terminal storing the card information of the payment card such as a credit card or bus card is close to the toll payment machine, the mobile short-range payment can be processed, and the mobile terminal storing the card information of the access card is authorized to enter and exit. If you get close to the flag, approval of entry The procedure can be started. Cards such as credit cards, traffic cards, and access cards are mounted in security modules in the form of applets, and the security modules can store card information for the mounted cards. Here, the card information of the payment card may be at least one of the card number, the balance, the usage history, the card information of the access card is at least one of the user's name number (for example, the student's student number or four) and the access history Can be.

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

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

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

5 is a view for explaining a backlight phenomenon to be solved in the present invention.

5 assumes an image of 9 pixels (pixels). Of course, the latest camera is composed of image data of more than 20 million pixels, Figure 5 is only an example for explaining the present invention.

Further, the image data is composed of a red (RED) color, a green (GREEN) color, a blue (BLUE) color, and the like, and can be represented by numbers of 0 to 255, respectively. The brightness value may be determined by combining the numbers of the red, green, and blue colors. The closer to O (bl ack), the darker, and the closer to 255 (whi te), the brighter. Each of the brightness values of each pixel illustrated in FIG. 5 corresponds to 10, 240, 33, 77, 106, 10, 10, 231, 58.

FIG. 6 is a diagram for explaining the complementary view of FIG. 5. To sum up the brightness values of the pixels shown in FIG. 5, there are three pixels with a brightness value of 10, one pixel with a brightness value of 33, one pixel with a brightness value of 58, and a pixel with a brightness value of 77. One pixel, one pixel with a brightness value of 106, one pixel with a brightness value of 231, and one pixel with a brightness value of 240.

6A and 6B show the aforementioned pixels in the histogram form. The horizontal axis shown in FIG. 6 means brightness values (0 to 255), and the vertical axis means the number of pixels having the corresponding value. Therefore, as shown in the histogram illustrated in FIG. 6, as the number of pixels having a brightness value close to zero increases, the likelihood of a dark image as a whole is high, and a back light phenomenon may be estimated.

Of course, the backlight phenomenon is not limited to the determination of only the brightness value shown in FIG. 6, and estimation through other embodiments is also within the scope of the present invention. In particular, the backlight phenomenon refers to a phenomenon in which an object is photographed relatively dark due to the brightness of the light source, when disposed in the order of a camera sensor, an object, and a light source.

According to an exemplary embodiment of the present invention, a technology for automatically compensating for an image quality of a camera by extracting information about whether or not backlight is used and backlighting degree is included.

Further, according to the prior art, the difference between the light source and the object brightness is determined by the camera sensor. Often, due to hardware limitations, it is not properly recognized. In such a case, there is a problem in that the bright part is saturated or the dark part is not visible at all.

According to another embodiment of the present invention, not only a snapshot of a camera but also a preview and a video, both dark and bright areas are correctly displayed, thereby providing image quality of image data without backlighting. The preview refers to a video displayed during a snapshot capturing process, and the snapshot refers to a still image captured last in the photo capturing mode. On the other hand, the video refers to a video captured in the video recording mode.

In this regard, the following will be described in more detail with reference to FIGS. 7 to 22.

7 is a block diagram including internal configuration modules of a mobile terminal according to an embodiment of the present invention. As shown in FIG. 7, the mobile terminal 700 according to an embodiment of the present invention includes a controller 710, an image data processor 720, a display mode 730, an interface mode 740, and a memory ( 750) and the like. Of course, it is also within the scope of the present invention to delete or add some models as required by those skilled in the art.

The interface module 740 receives a command for starting at least one of a mode for capturing still images or a mode for capturing a video. The interface models 740 correspond to, for example, a touch screen or a key button.

The controller 710 is designed to calculate a flexible threshold value for determining backlighting based on at least one data. The controller 710 corresponds to, for example, CPlKCentral Processing Unit (CPlK), Application Processor (AP), quad-core, or dual-core.

The image data processor 720 controls the backlight compensation to be performed based on the calculated flexible reference value. The image data processor 720 corresponds to the GPlKGraphic Processing Unit.

And the memory 750, at least one or more photographed in accordance with the mode It is designed to store image data. The memory 750 corresponds to, for example, a system memory, an internal memory, a SCKSecure Digital card, and the like.

When the command for terminating the mode is received through the interface modules 740, the display modules 730 may perform image data or backlight correction performed by the image data processor 720. Outputs additional information for selectively storing one of the original image data, which is not received, in the memory 750.

Further, the at least one data may be classified into, for example, a first group and a crab 2 group. More specifically, for example, the first group includes at least one of brightness information, color information, focus information, and ROI (Region Of Interest) information of a frame extracted from the captured image. At least one of location information, direction information, time information, weather information received from the network.

The controller 710 is designed to calculate by selectively using at least one of a database having a predetermined information or a specific equation. Hereinafter, with reference to FIGS. 8 and 10 will be described in detail below.

According to another embodiment of the present invention, the controller 710 is set such that the flexible reference value decreases as the brightness value of the entire frame increases, and the brightness of the entire frame. The flexible reference value increases as the value decreases.

According to another embodiment of the present invention, the controller 710 is set such that the difference between the brightness of the focus area or the R0I area and the brightness of the peripheral area increases so as to decrease the flexible reference value. The flexible reference value is set to increase as the difference between the brightness of the focus area or the R0I area and the brightness of the peripheral area decreases. Hereinafter, with reference to FIGS. 8 and 11 will be described in detail below.

In addition, when a mode for video recording is started, the controller 710 applies a first flexible reference value based on the starting time point, and applies a second flexible reference value after the starting time point. In addition, the memory 750, the Image data to which the first flexible reference value is applied and image data to which the second flexible reference value is applied are stored as one continuous content. In this regard, it will be described later in detail with reference to FIGS. 8 and 19 to 22.

FIG. 8 is a diagram for explaining the complementary view of FIG. 7. 8 illustrates the functions of the controller 710 and the image data processor 720 illustrated in FIG. 7 in more detail. For example, the controller 710 illustrated in FIG. 7 corresponds to the backlight detection modules 810 illustrated in FIG. 8, and the image data processor 720 illustrated in FIG. 7 corresponds to the intelligent compensation modules illustrated in FIG. 8. intel l igent compensat ion module) 820.

The backlight detection algorithm according to the prior art has always used only a single fixed threshold value. However, the human eye recognizes the difference according to the brightness difference between the dark and the bright areas.

Accordingly, it is necessary to change the threshold value adaptively according to the brightness of the entire area and the brightness difference of the specific area. Furthermore, the present invention is applied to each of the preview, snapshot, and video modes described above. It is also possible to implement the models shown in FIG. 8 by software or algorithm.

The backlight detection mode 810 includes a threshold decision mode 811 and a backlight rate decision mode 812. The intelligent compensation module 820 includes a preview compensation modules 821, snapshot compensation modules 822, video compensation modules 823, and the like.

The threshold determination mode 811 includes a statistical distribution of a histogram of brightness values shown in FIG. 6, a difference in brightness between R0I (Region Of Interest) and a surrounding area, and a focus area and a surrounding area. The threshold value is changed by using at least one of brightness difference, location information or time information. Of course, using two or more pieces of information is within the scope of the present invention.

For example, setting the threshold value (or flexible reference value) to increase the brightness value of the entire frame increases, and decreases as the brightness value of the entire frame decreases. The flexible reference value increases Set it.

In addition, as the difference between the brightness of the focus area or the R0I area and the brightness of the peripheral area increases, the flexible reference value is set to decrease, and the difference between the brightness of the focus area or the R0I area and the brightness of the peripheral area decreases. The flexible reference value is set to increase as more.

Meanwhile, the present invention proposes two methods for determining the flexible threshold value. The first way is to rely on a database with experimentally measured information. As a second method, there is a method based on Equation 1 as follows.

[251] (Equation 1)

[252] Th (reference value) = wKBr tightness, Saturat ion) + w2 (Focus, ROI)

That is, the reference value is determined by a value A determined for BRIGHTNESS and SATURATION of each pixel and a weight value wl for the A value, and also for a focus area and an R0I area. Value B and an increment value w2 for the value B. The value B for the focus region and the R0I region is determined by the brightness difference between the focus region and the peripheral region or the brightness difference between the R0I region and the peripheral region. Of course, it is also within the scope of the present invention to add another parameter to flexibly adjust the reference value.

The backlight rate determination module 812 determines the rate of backlight (backlight) based on, for example, three parameters.

First, when the R0I region exists, the degree of backlight is determined based on the brightness difference between the R0I region and the peripheral region.

Second, the specific gravity and the darkness of the area selected as the dark portion in the entire captured image (frame) are calculated, and as the dark area and the darkness are higher, the back light is determined to have a higher rate.

Third, the specific gravity and the degree of lightness of the region selected as the roster in the entire photographed image (frame) are calculated, and the higher the lightness area and the higher the brightness level, the lower the backlighting rate is. Accordingly, the intelligent compensation modules 820 illustrated in FIG. 8 are designed to receive two pieces of information about backlighting and a degree of backlighting from the backlight detection modules 810. Of course, if there is no backlight phenomenon, it does not receive information about the degree of backlight.

The preview compensation modes 821 control AMAT (Automatic Exposure) based on data received from the backlight (backlight) detection modes 810. That is, according to whether the backlight and the degree of backlight, AE is controlled adaptively.

For example, it is designed to change the AE weight for RC »I according to the degree of backlight of RC) I. Thus, the greater the backlight of R0I, the higher the AE weight for R0I, and the less severe the backlight of R () I, the less the AE weight for R0I. The ROI (Region Of Interest) corresponds to a predetermined area (for example, a center) or a user's face part (when the camera has a face recognition function).

Furthermore, the description of R () I may be equally applied to the focus area. The focus area may be the same as R ⁽ ) I or designed differently.

The snapshot compensation modes 822 are designed to control the AE Automat ic Exposure based on the data received from the backlight (backlight) detection modes 810 and further to switch to the HDR shooting mode. In other words, the AE is adaptively controlled depending on the backlight and the degree of backlight, and the camera switches to the HDR shooting mode.

For example, it is designed to change the AE weight for R0I according to the degree of backlight of R () I. Therefore, the greater the backlight of R () I, the higher the AE weight for R0I, and the less severe the backlight of R0I, the less the AE weight for R () I. The ROI (Region Of Interest) corresponds to a predetermined area (for example, a center) or a user's face part (for a camera having a face recognition function).

Further, when receiving the information that the backlight exists, the snapshot compensation module 822 automatically changes the photographing mode and then starts HDR photographing. Therefore, there is an advantage that the user does not need to switch to the ZSUZero Shutter Lag) mode or the mode for HDR shooting separately. The video compensation modules 823 are also designed to control AE (Automat ic Exposure) based on the data received from the backlight (backlight) detection module 810 and to switch to HDR shooting mode. That is, the AE is adaptively controlled according to whether or not the backlight is turned on and the backlight level is switched to the HDR shooting mode.

For example, it is designed to change the AE weight for R (H according to the degree of backlighting of R0I. Therefore, the greater the backlight of R ( ⁾ I, the higher the AE weight for R ( ⁾ I, The less severe the backlight of R () I, the less the AE weight for R0I, while the ROKRegion Of Interest is a predetermined area (e.g., center) or user's face recognition (face recognition). Camera).

Further, the video compensation modules 823 are designed to continuously receive data about backlighting and the degree of backlighting from the backlight detection modules 810 even after photographing. This is because video (video) recording usually takes a long time, and the backlighting may be changed from time to time according to the camera angle. That is, one feature of the present invention is that the first data regarding the backlight reference value and the degree of backlighting at the time of video shooting and the second data about the backlight reference value and the degree of backlighting after the video shooting start may not be the same.

9 is a flowchart illustrating a method for controlling a mobile terminal according to an embodiment of the present invention. It is also within the scope of the present invention to delete some of the steps shown in Figure 9 or to add other steps.

First, the mobile terminal starts at least one of a mode for capturing a still image or a mode for capturing a video (S910). Collecting at least one or more data for determining whether the backlight (S920).

A flexible threshold value for determining backlighting is calculated (S930) and based on at least one of the collected data and the calculated flexible reference value, a backlight backlight and a level of backlight are determined. (S940). When a backlight event occurs, the backlight compensation is performed so as to perform back compensation with reference to the data stored in the memory according to the determined degree of backlight (S950). In operation S930, for example, as described above, a calculation is performed using at least one of a database having previously measured information or Equation 1 above.

In operation S930, the flexible reference value is set to decrease as the brightness value of the entire frame increases, and the flexible reference value is set to increase as the brightness value of the entire frame decreases. do.

In operation S930, the flexible reference value decreases as the difference between the brightness of the focus area or the R0I area and the brightness of the peripheral area increases, and the difference between the brightness of the focus area or the R0I area and the brightness of the peripheral area. The flexible reference value is set to increase as this decreases.

Although not illustrated in FIG. 9, when the mode for video recording is started, the method further includes applying a first flexible reference value based on the start time point and applying a second flexible reference value after the start time point. It is another feature of the present invention. The first flexible reference value is different from the second flexible reference value.

As described again and again, the present invention, unlike the prior art, has a major feature in changing the threshold value emphatically. For example, the threshold value is automatically adjusted based on the brightness value of the pixel, the information on R0I, and the like. More specifically, for example, when the overall brightness is bright on the image data, the threshold value (also referred to as a threshold value) is lowered, and when the relative brightness is relatively low, the threshold value is increased. This is because the possibility of backlighting is relatively high in an environment where the overall brightness is bright. Therefore, it is necessary to design the backlighting more sensitively by lowering the threshold value.

As shown in FIG. 10, input data is analyzed to calculate a threshold value (reference value) (S1031). In step S1031, the focus area, the R0I related information, the location information, the time information, the brightness value of each pixel, and the like are used.

In addition, the threshold value is obtained by using the input data of the step S1031. Calculate (S1032). It is another feature of the present invention to determine a threshold value based on Equation 1 described above. As another example, lowering the threshold value in weather (or time) in which backlighting occurs frequently and increasing the threshold value in weather (or time) in which backlighting occurs relatively less is also within the scope of the present invention. Belongs.

FIG. 11 is a flowchart illustrating another embodiment of implementing step S940 illustrated in FIG. 9. Deleting some of the steps shown in FIG. 11 and adding another step also belongs to the scope of the present invention, and the scope of the present invention is not limited in the order shown in FIG. 11.

The threshold value calculated in step S1032 shown in FIG. 10 and the data collected in step S920 shown in FIG. 9 are compared to determine whether the backlight is back (S1141). If it is determined that the backlight is generated, the intensity of the backlight is determined (S1142).

However, the step S1142 may be an independent step, or may be a step including the steps S1143 to S1145 to be described later. The reason why the steps S1142 to S1145 are necessary is that the image compensation range must be set differently according to the degree of backlight.

According to step S1143, the backlighting degree of R0I is determined. Then, based on the determined degree of backlight, the backlight against R0I is partially compensated.

In operation S1144, the specific gravity and the degree of brightness of the dark region are determined. Subsequently, the backlight of the dark region is partially compensated based on the determined specific gravity and the degree of brightness of the dark region.

In operation S1145, the specific gravity and the degree of brightness of the roster area are determined. Furthermore, based on the specific gravity and the degree of brightness of the determined roster area, the backlight of the rotatable area is partially compensated.

12 illustrates an image photographed by the prior art. When camera photography is performed according to the prior art, an image as shown in FIG. 12 may be obtained. At this time, as shown in FIG. 12, the person 1220 located in the area of the photographing center is darkly displayed due to a backlight phenomenon.

However, other areas 1210 except for the person 1220 are brightly displayed. Therefore, according to the prior art, there was a problem in not receiving a backlight determination. A solution for solving such a problem will be described with reference to FIG. 13.

FIG. 13 is a diagram for describing a process of analyzing data of an image photographed in FIG. 12 according to another embodiment of the present invention. FIG.

According to another embodiment of the present invention, R0K1310 is specified, and it is determined whether the backlight is within the specified R0K1310). Therefore, since the user area 1320 in which the pixel value appears dark occupies most of the R0K 1310, it is possible to assume that the backlight phenomenon has occurred.

If the above-described technique is applied, a technical effect that can be designed to improve the accuracy of the backlight determination and to partially compensate the backlight in the R0I region is expected.

14 is a diagram for explaining a process of analyzing data of a photographed image according to another embodiment of the present invention.

A mobile terminal according to another embodiment of the present invention assumes a case of using a camera equipped with a face recognition function. Of course, it will be apparent to those skilled in the art that other embodiments of the present invention may be applied even when the camera is not a face recognition camera.

The R () I described above may correspond to the face recognition area 1410 illustrated in FIG. 14. Similar to that described with reference to FIG. 13, due to the brightness of the area 1420 other than the face recognition area 1410, the backlight phenomenon does not occur even when the face recognition area 1410 is displayed in dark. Can be.

On the other hand, according to another embodiment of the present invention, it is determined whether the backlight is within the face recognition area 1410. Therefore, regardless of the brightness of the other peripheral area 1420, there is a technical effect that can accurately detect the backlight phenomenon in which the face recognition area 1410 is dark. If the above-described technique is applied, the accuracy of backlight determination is improved, and backlight compensation is partially performed only in the face recognition area.

15 is a view illustrating a backlight phenomenon from which one of the embodiments of the present invention is removed; The image is shown. FIG. 16 shows an image taken by the prior art, in contrast to FIG. 15.

13A or 14B, when any one or more of the embodiments described with reference to FIG. 13 are applied, as shown in FIG. 15, it is possible to display image data having almost no backlight phenomenon. That is, both dark and bright areas are output at an identifiable level.

On the other hand, according to the prior art, since the dark area (R0I or the face recognition area) is still displayed dark as shown in FIG. 16, there is a problem that an object of the dark area cannot be properly identified by the general human eye. have.

17 illustrates additional information used by a mobile terminal to selectively store original image data or image data from which backlighting is removed according to an embodiment of the present invention.

The mobile terminal 1700 illustrated in FIG. 17 assumes that at least one of the embodiments described above is applied. The mobile terminal 1700 will further assume that a snapshot, a still image, or a picture is taken.

Unlike the prior art, the mobile terminal 1700 according to an embodiment of the present invention is designed to temporarily store the image data having the backlight compensation and the image data in the memory before the backlight compensation is performed. This is to satisfy the needs of various users.

[300] On the other hand, regardless of the different needs of each user, it is not desirable to keep storing all original pictures and the improved (backlit) picture in terms of memory efficiency.

Thus, FIG. 17 has been devised to solve the above-described needs and problems.

The mobile terminal 1700 according to an embodiment of the present invention displays the additional information 1710 that determines which image to selectively store the original image and the new image having the backlight compensation.

In addition to the additional information 1710, three options 1720 selectable by a user are provided. The three options (1720) are for storing only originals. It includes both the option to save only images and the instructions to save both. Of course, some modifications to the needs of those skilled in the art also fall within the scope of the present invention.

18 is a diagram illustrating a state in which a mobile terminal distinguishes and stores original image data or image data from which backlighting is removed according to an embodiment of the present invention.

According to FIG. 17 described above, a mobile terminal according to an embodiment of the present invention selectively stores an original image and a new image in a memory.

Thus, as shown in FIG. 18, the new image list 1810 and the original list 1820 are distinguished and displayed respectively. Of course, FIG. 18 does not show a case where the original image and the new image are the same.

However, the user may select to store only the original image for some picture groups, only new images for some other picture groups, and both images for some other picture groups.

Furthermore, as shown in FIG. 18, if a distinct list is provided, the user can easily check the effect of the backlight removing technique provided by the embodiment of the present invention at a time.

FIG. 19 is a diagram for describing a case in which a moving image is captured by a mobile terminal according to an embodiment of the present invention in a state where a backlight phenomenon is detected.

As described above, the backlight phenomenon occurs when the light source 1920, the object 1910, and the camera-mounted mobile terminal 1900 are sequentially located. Meanwhile, FIG. 19 assumes that a video is being captured.

In this case, as described above, the mobile terminal 1900 performs a backlight backlight determination and compensation process internally. Therefore, it is possible to design such that the moving image 1911 from which the backlight phenomenon is removed is displayed on the screen and a message indicating that the backlight is being corrected together.

20 is a diagram for describing a case in which a moving image is photographed by a mobile terminal according to an embodiment of the present invention in a state where backlight is not detected.

As shown in FIG. 19, it is assumed that a video is photographed in a backlight phenomenon. However, during video recording, as shown in FIG. It may disappear in the foreground. At this time, the threshold value for determining the backlight phenomenon may also be changed.

If it is assumed that there is no backlight phenomenon based on the new threshold value, as illustrated in FIG. 20, the mobile terminal 2000 displays the object 2010 on the screen 2011 as it is.

Furthermore, unlike the message illustrated in FIG. 19, in FIG. 20, a message 2030 indicating that the picture is normally taken is outputted together. Thus, referring to FIGS. 19 and 20, unlike the prior art, there is an advantage that the user does not need to directly change the shooting mode according to the backlight phenomenon.

FIG. 21 is a diagram of a mobile terminal according to an embodiment of the present invention, which displays a list of videos captured by FIGS. 19 and 20.

19 and 20 will be assumed to be photographed continuously on the same object.

As shown in FIG. 21, the mobile terminal 2100 according to an embodiment of the present invention provides a video list. The video list includes A content 2110, B content 2120, C content 2130, and the like. In particular, it is assumed that the A content 2110 corresponds to a video photographed in FIGS. 19 and 20.

In this case, the user 2101 may arbitrarily select the A content 2110 previously photographed. According to the prior art, only a function of outputting a content including a backlight phenomenon was provided. On the other hand, according to one embodiment of the present invention, it provides a new additional function as shown in FIG.

22 is a view for explaining a process of reproducing a video captured by FIGS. 19 and 20 by a mobile terminal according to an embodiment of the present invention.

The mobile terminal 2200 according to an embodiment of the present invention outputs information 2210 identifying the selected content and outputs the corresponding video 2220 together. This is not a large contrast to the prior art.

On the other hand, the mobile terminal 2200 according to an embodiment of the present invention performs normal shooting with the areas (a, c) photographed by correcting a backlight phenomenon in one content. It provides a progressive bar 2230 that distinguishes region (b).

Accordingly, the user can more easily check whether a backlight phenomenon occurs at any moment, and it is expected that the user can use it for other editing. For example, editing can be performed quickly to delete the area where the backlight correction is performed, leaving only the part where there was no backlight phenomenon.

The present invention described above can be embodied as computer readable codes on a medium in which a program is recorded. The computer readable medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of media that the computer can read include HDD Hard Disk Drives, SSDCS id State Disks, SD Icon Disk Drives, ROMs, RAM, CD-ROMs, magnetic tape floppy disks, and optical data storage devices. And the like also implemented in the form of a carrier wave (eg, transmission over the Internet). In addition, the computer may include the controller 180 of the terminal. Accordingly, the above detailed description should not be construed as limiting in all aspects and should be considered as illustrative. The scope of the invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the invention are included in the scope of the invention.

[Form for implementation of invention]

In the best mode for carrying out the invention, a person of ordinary skill in the art may implement other embodiments with reference to related descriptions.

Industrial Applicability

The present invention can be applied to, for example, a mobile device, a television dog, a wearable device, and the like, and thus, industrial applicability is expected.

Claims

[Range of request]

[Claim 1]

In the control method of the mobile terminal,

Initiating at least one of a mode for capturing still images or a mode for capturing motion pictures;

Collecting at least one or more data for determining backlighting;

Calculating a flexible threshold value for determining backlighting;

Determining whether backlighting and a level of backlighting are performed based on at least one of the collected data and the calculated flexible reference value; And

If a backlight event occurs, controlling the backlight compensation to be performed by referring to data of a pre-stored memory according to the determined degree of backlighting

Control method of a mobile terminal comprising a.

[Claim 2]

The method of claim 1,

The collected data is,

A control method of a mobile terminal that can be classified into a first group and a second group.

[Claim 3]

The method of claim 2,

The first group includes at least one of brightness information, color information, focus information, and ROI (Region Of Interest) information of a frame extracted from a captured image, and the second group includes location information received from a network. And at least one of direction information time information and weather information.

[Claim 4]

The method of claim 1,

The step of calculating the flexible reference value,

At least one of a database or a specific equation with pre-measured information Control method of the mobile terminal to calculate using one selectively.

[Claim 5]

The method of claim 3, wherein

The step of calculating the flexible reference value,

Set the flexible reference value to decrease as the brightness value of the entire frame increases.

And controlling the flexible reference value to increase as the brightness of the entire frame decreases.

[Claim 6]

The method of claim 3,

The step of calculating the flexible reference value,

The difference between the brightness of the focus area or the R0I area and the brightness of the surrounding area may increase so as to decrease the flexible reference value.

And controlling the flexible reference value to increase as the difference between the brightness of the focus area or the R0I area and the brightness of the surrounding area decreases.

[Claim 7]

The method of claim 1,

When the mode for movie shooting is started,

Applying a first flexible reference value based on the disclosed time point; And

And applying a second flexible reference value after the start time point, wherein the first flexible reference value and the second flexible reference value are different.

[Claim 8]

In the mobile terminal,

Display modules;

Interface modules for receiving a command to initiate at least one of a mode for still image shooting or a mode for moving image capturing;

Flexible for back light determination based on at least one data A controller for calculating a lexible threshold value;

An image data processor configured to control back light correction based on the calculated flexible reference value; And

A memory for storing at least one image data photographed according to the mode;

When a command for exiting the mode is received through the interface modules, the display modules

And additional information for selectively storing, in the memory, one of image data having a backlight correction or original image data having no backlight correction by the image data processor.

[Claim 91]

The method of claim 8,

The at least one data is,

A mobile terminal which can be classified into a first group and a second group.

[Claim 10]

The method of claim 9,

The first group includes at least one of brightness information, color information, focus information, and ROI (Region Of Interest) information of a frame extracted from the captured image, and the second group includes location information received from a network. And at least one of direction information, time information, and weather information.

[Claim 11]

The method of claim 18,

The controller is

A mobile terminal for selectively calculating using at least one of a database having a predetermined information or a specific equation.

[Claim 12]

The method of claim 10,

The controller is The flexible reference value decreases as the brightness value of the entire frame increases.

A mobile terminal configured to increase the flexible reference value so that the brightness value of the entire frame can decrease.

[Claim 13]

The method of claim 10,

The controller,

Set the flexible reference value to decrease as the difference between the brightness of the focus area or the R0I area and the brightness of the surrounding area increases.

The mobile terminal is configured to increase as the difference between the brightness of the focus area or the R0I area and the brightness of the surrounding area decreases.

【Claim 14】,

According to claim 18,

If the mode for movie shooting is started,

The controller is

The first flexible reference value is applied based on the starting time point, and after the starting time, the second flexible reference value is applied. Further, the first flexible reference value and the second flexible reference value are different from each other.

[Claim 15]

In claim 14

The memory is,

The mobile terminal stores the image data to which the first flexible reference value is applied and the image data to which the second flexible reference value is applied as one continuous content.