KR20160026628A - Methof for removing image sticking in display device - Google Patents

Abstract

A method for removing an image sticking in a display device is disclosed. A display device according to an embodiment of the present invention comprises a display unit and a control unit. The control unit is configured to execute an application for removing an image sticking; to control the display unit to display a specific screen; to detect an image sticking area from the specific screen; and to adjust a luminance of the display unit corresponding to a surrounding area of the detected image sticking area.

Description

[0001] METHOD FOR REMOVING IMAGE STICKING IN DISPLAY DEVICE [0002]

The present invention relates to a display device and a method for removing afterimage in the display device.

Flat panel display devices such as a liquid crystal display (LCD), a plasma display panel (PDP), and an organic light emitting diode (OLED) display device are mainly used as a display device.

Particularly recently, display devices including OLEDs having advantages of high brightness and low power consumption and not requiring a separate backlight unit are widely used. Particularly, in the case of a display device including such an OLED, prevention of sticking after-image is a key issue.

1 is a view for explaining a problem of a display device including an OLED. 1 (a) shows a TV 10 as an example of a display device, and Fig. 1 (b) shows a mobile phone 20 as an example of a display device.

Referring to FIG. 1, it can be seen that afterimages 11 and 22 appear on the screen of the display devices 10 and 20, respectively. The after-images 11 and 22 are generated due to deterioration of the OLED included in the display devices 10 and 20, and correspond to sticking after-images that can not be removed unless the OLED is physically replaced. Although some algorithms have been introduced to prevent such residual images 11 and 22 from occurring, there is a problem in that it only slows down the rate at which afterimage due to the deterioration of the device occurs, but can not remove the afterimage once generated.

The present invention is directed to solving the above-mentioned problems and other problems. Another object of the present invention is to provide a method for eliminating a residual image appearing on a screen of a display unit.

It is another object of the present invention to provide a residual image removal method which allows a user to remove a residual image displayed on a screen of a display unit while the user directly observes it.

Another object of the present invention is to provide a residual image removal method which can receive an image including a residual image displayed on a screen of a display unit from another apparatus and remove an afterimage using the image.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, unless further departing from the spirit and scope of the invention as defined by the appended claims. It will be possible.

The display device according to an embodiment of the present invention includes a display unit and a control unit, and the control unit controls the display unit to display a specific screen by executing an application for afterimage removal, And adjusts the luminance of the display unit corresponding to the peripheral area of the detected after-image area.

According to another aspect of the present invention, there is provided a display device including a network interface unit capable of wireless communication with an external device, a display unit, and a control unit, wherein the control unit controls the network interface unit Controls the display unit to display a specific screen, and receives information related to the image corresponding to the specific screen from a specific external device to which the wireless communication is connected The control unit controls the network interface unit and detects a residual image area in the specific image based on information related to the received image and adjusts a luminance of a display unit corresponding to a peripheral area of the detected residual image area.

According to another aspect of the present invention, there is provided a display device including a wireless communication unit capable of wireless communication with an external device, a camera, a display unit, and a control unit, wherein the control unit executes an application for removing afterimage of an external device, Controlling the wireless communication unit to connect wireless communication with a specific external device, activating the camera, acquiring an image using the activated camera when an imaging command is sensed, And controls the wireless communication unit to transmit the image data to a specific external device to which the communication is connected.

According to at least one of the embodiments of the present invention, it is possible to provide a residual image removal method that allows a user to remove a residual image displayed on a screen of a display unit while the user directly observes it.

According to at least one embodiment of the present invention, there is provided a residual image removal method for receiving an image including a residual image displayed on a screen of a display unit from another apparatus and removing an afterimage using the image have.

Further scope of applicability of the present invention will become apparent from the following detailed description. It should be understood, however, that the detailed description and specific examples, such as the preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art.

1 is a view for explaining a problem of a display device including an OLED.
2 is a block diagram illustrating a mobile terminal as an example of a display device.
3 is a block diagram illustrating a multimedia device as another example of the display device.
FIG. 4 is a block diagram illustrating a detailed configuration of the controller of FIG. 3 according to an embodiment of the present invention.
5 is a diagram illustrating examples of a remote controller for controlling a multimedia device according to an exemplary embodiment of the present invention.
6 is a flowchart for explaining an example of a method of removing a residual image in a display device according to an embodiment of the present invention.
7 is a view for explaining an example of a screen displayed on a display unit when a residual image removal application is executed in a multimedia device according to an embodiment of the present invention.
8 is a view for explaining an example of a screen displayed on a display unit when a residual image removal application is executed in a multimedia device according to an embodiment of the present invention.
9 is a diagram for explaining an example of a method of selecting a residual image area using a remote controller in a multimedia device according to an embodiment of the present invention.
10 is a diagram for explaining another example of a method of selecting a residual image area using a remote controller in a multimedia device according to an embodiment of the present invention.
11 is a view for explaining another example of a method of selecting a residual image area using a remote controller in a multimedia device according to an embodiment of the present invention.
12 is a view for explaining an example of a method of selecting a logo related to afterimage displayed on a display unit in a multimedia device according to an embodiment of the present invention.
13 and 14 are views for explaining an example of a GUI displayed on a display unit to remove a residual image when a residual image area is detected in a multimedia device according to an embodiment of the present invention.
FIG. 15 is a diagram for explaining another example of a GUI displayed on a display unit to remove a residual image when a residual image area is detected in a multimedia device according to an embodiment of the present invention.
16 is a view for explaining an example of a screen displayed on a display unit when a residual image removal application is executed in a multimedia device according to an embodiment of the present invention.
17 is a diagram for explaining an example of a screen displayed on the display unit when a residual image removal application is executed in a mobile terminal according to an embodiment of the present invention.
18 is a view for explaining an example of a method of selecting an indicator related to a residual image displayed on a display unit in a mobile terminal according to an embodiment of the present invention.
FIG. 19 is a diagram for explaining an example of a GUI displayed on the display unit to remove a residual image when a residual image area is detected in the mobile terminal 100 according to an embodiment of the present invention.
20 is a view for explaining another example of GUI displayed on the display unit to remove a residual image when a residual image area is detected in a mobile terminal according to an embodiment of the present invention.
21 is a flowchart for explaining another example of a method of removing a residual image in a display device according to an embodiment of the present invention.
22 and 23 are diagrams for explaining an example of a method of executing a residual image removal application in a multimedia device according to an embodiment of the present invention.
24 is a diagram for explaining an example in which a residual image removal application is executed in a multimedia device as an example of a first display device according to an embodiment of the present invention.
25 is a view for explaining an example of a case where a residual image removal application is executed in a mobile terminal as an example of a second display device according to an embodiment of the present invention.
26 is a diagram for explaining an example of a screen displayed on the display unit when an application for removing afterimage is executed in a mobile terminal according to an embodiment of the present invention.
27 is a view for explaining an example of a screen displayed on the display unit when a residual image removal application is executed in a mobile terminal according to an embodiment of the present invention.
28 is a view for explaining an example of a screen displayed on a display unit when a residual image removal application is executed in a mobile terminal according to an embodiment of the present invention.
29 is a diagram for explaining an example of a screen displayed on the display unit when a residual image removal application is executed in a mobile terminal according to an embodiment of the present invention.
30 is a view for explaining an example of a guidance message output to the display unit of the mobile terminal according to an embodiment of the present invention.
31 is a view for explaining an example of a screen displayed on a display unit of a multimedia device to be subjected to afterimage removal when an application for afterimage removal is executed in a mobile terminal according to an embodiment of the present invention.
32 is a view for explaining an example of a screen displayed on a display unit of a mobile terminal when a screen of the multimedia device is shot using the mobile terminal according to an embodiment of the present invention.
33 is a view for explaining an example of a screen displayed on the display unit of the mobile terminal according to the embodiment of the present invention.
34 is a diagram for explaining an example of a method for the user to select a residual image area in the mobile terminal according to an embodiment of the present invention.
35 is a view for explaining an example of a method of selecting a residual image area in a mobile terminal according to an embodiment of the present invention.
36 is a view for explaining an example of a screen displayed on the display unit of the mobile terminal according to the embodiment of the present invention.
37 is a view for explaining an example of a screen displayed on the display unit of the mobile terminal according to the embodiment of the present invention.
38 is a view for explaining an example of a method of transmitting information related to an image to a multimedia device in a mobile terminal according to an embodiment of the present invention.
FIG. 39 is a view for explaining an example of a screen displayed on the display unit of the multimedia device according to the embodiment of the present invention.
FIG. 40 is a view for explaining an example of a method of removing a residual image in a multimedia device according to an embodiment of the present invention.
41 is a view for explaining an example of a screen displayed on the display unit after the first residual image removal process is performed in the multimedia device according to the embodiment of the present invention.
42 is a view for explaining an example of a screen displayed on the display unit of the multimedia device according to the embodiment of the present invention.
43 is a view for explaining an example of a screen displayed on the display unit when a residual image removal application is executed in a mobile terminal according to an embodiment of the present invention.
44 is a view for explaining an example of a screen displayed on the display unit after the completion of the process of removing the afterimage of the multimedia device in the mobile terminal according to the embodiment of the present invention.
45 is a diagram illustrating an example of a screen displayed on the display unit of the first mobile terminal as an example of the first display device according to an embodiment of the present invention.
46 is a diagram illustrating an example of a screen displayed on a display unit of a second mobile terminal as an example of a second display device according to an embodiment of the present invention.
47 is a diagram illustrating an example of a screen displayed on a display unit of a second mobile terminal according to an embodiment of the present invention.
FIG. 48 is a view for explaining an example of a method for removing an afterimage in a first mobile terminal according to an embodiment of the present invention; FIG.

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

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

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

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

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

The display device to be subjected to afterimage removal described herein may be a TV, a smart TV, a network TV, a Hybrid Brodacast Broadband Television (HBBTV), an Internet TV, a Web TV, an IPTV Mobile phones, smart phones, laptop computers, digital broadcasting terminals, personal digital assistants (PDAs), portable multimedia players (PMPs), navigation systems, slate computers PCs, tablet PCs, ultrabooks, wearable devices such as smartwatches, smart glass, and HMDs (head mounted displays). can do. The display device may be a PDP, an LCD, an OLED, a QD (quantum dot) display, a QD LED display, or the like.

2 is a block diagram illustrating a mobile terminal as an example of a display device.

The mobile terminal 100 includes a wireless communication unit 110, an input unit 120, a sensing unit 140, an output unit 150, an interface unit 160, a memory 170, a control unit 180, And the like. The components shown in FIG. 2 are not essential for implementing a mobile terminal, so that the mobile terminal described herein may have more or fewer components than the components listed above.

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

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

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

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

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

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

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

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

In addition, the controller 180 may control at least some of the components illustrated in FIG. 2 to drive an application program stored in the memory 170. In addition, the controller 180 may operate at least two of the components included in the mobile terminal 100 in combination with each other for driving the application program.

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

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

Hereinafter, the components listed above will be described in more detail with reference to FIG. 2 before explaining various embodiments implemented through the mobile terminal 100 as described above.

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

The broadcast management server may refer to a server for generating and transmitting broadcast signals and / or broadcast related information, or a server for receiving broadcast signals and / or broadcast related information generated by the broadcast management server and transmitting the generated broadcast signals and / or broadcast related information. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and a broadcast signal in which a data broadcast signal is combined with a TV broadcast signal or a radio broadcast signal.

The broadcasting signal may be encoded according to at least one of technical standards for transmitting and receiving a digital broadcasting signal (or a broadcasting system, for example, ISO, IEC, DVB, ATSC, etc.) It is possible to receive the digital broadcasting signal using a method conforming to the technical standard defined by the technical standards.

The broadcast-related information may be 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 broadcast-related information may exist in various forms, 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). The broadcast signal and / or broadcast related information received through the broadcast receiving module 111 may be stored in the memory 160.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Generally, 3D stereoscopic images consist of left image (left eye image) and right image (right eye image). A top-down method of arranging a left image and a right image in one frame according to a method in which a left image and a right image are combined into a three-dimensional stereoscopic image, A checker board system in which pieces of a left image and a right image are arranged in a tile form, a left-to-right (right-side) Or an interlaced method in which rows are alternately arranged, and a time sequential (frame-by-frame) method in which right and left images are alternately displayed in time.

In addition, the 3D thumbnail image may generate a left image thumbnail and a right image thumbnail from the left image and right image of the original image frame, respectively, and may be generated as one image as they are combined. In general, a thumbnail means a reduced image or a reduced still image. The left image thumbnail and the right image thumbnail generated in this way are displayed on the screen with a difference of the left and right distance by the depth corresponding to the parallax between the left image and the right image, thereby exhibiting a stereoscopic spatial feeling.

The left and right images necessary for realizing the three-dimensional stereoscopic image can be displayed on the stereoscopic display unit by the stereoscopic processing unit. The stereoscopic processing unit receives a 3D image (an image at a reference time point and an image at an expansion point), sets a left image and a right image therefrom, or receives a 2D image and converts it into a left image and a right image.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

3 is a block diagram illustrating a multimedia device as another example of the display device.

The multimedia device 200 includes a receiving unit 210, an external device interface unit 220, a memory 230, a display unit 240, an audio output unit 250, a power supply unit 260, a control unit 270, An interface unit 280, and the like.

The receiving unit 210 may include at least one tuner 211, a demodulating unit 212, and a network interface unit 213. However, in some cases, the receiving unit 210 may include the tuner 211 and the demodulator 212, but may not include the network interface unit 213, or vice versa. Although not shown, the receiving unit 210 includes a multiplexer, and multiplexes the signal demodulated by the demodulator 212 and the signal received through the network interface 213 via the tuner 211, You may. In addition, although not shown, the receiving unit 210 may include a demultiplexer to demultiplex the multiplexed signal or demultiplex the demodulated signal or the signal transmitted through the network interface unit 213 .

The tuner 211 tunes a channel selected by a user or all pre-stored channels among RF (Radio Frequency) broadcast signals received through an antenna and receives RF broadcast signals. Also, the tuner 211 converts the received RF broadcast signal into an intermediate frequency (IF) signal or a baseband signal.

For example, if the received RF broadcast signal is a digital broadcast signal, the signal is converted into a digital IF signal (DIF). If the received RF broadcast signal is an analog broadcast signal, the signal is converted into an analog baseband image or a voice signal (CVBS / SIF). That is, the tuner 211 can process both a digital broadcast signal and an analog broadcast signal. The analog baseband video or audio signal (CVBS / SIF) output from the tuner 211 can be directly input to the controller 270.

In addition, the tuner 211 can receive RF broadcast signals of a single carrier or a multiple carrier. On the other hand, the tuner 211 sequentially tunes and receives RF broadcast signals of all the broadcast channels stored through the channel storage function among the RF broadcast signals received through the antenna, converts the RF broadcast signals into intermediate frequency signals or baseband signals (DIF: Digital Intermediate Frequency or baseband signal).

The demodulator 212 may receive and demodulate the digital IF signal DIF converted by the tuner 211 and perform channel decoding. For this, the demodulator 212 may include a trellis decoder, a de-interleaver, a reed-solomon decoder, or a convolution decoder, a deinterleaver, - Solomon decoder and the like.

The demodulator 212 can demodulate and decode the channel, and output the stream signal TS. At this time, the stream signal may be a signal in which a video signal, a voice signal, or a data signal is multiplexed. For example, the stream signal may be an MPEG-2 TS (Transport Stream) multiplexed with an MPEG-2 standard video signal, a Dolby AC-3 standard audio signal, or the like.

The stream signal output from the demodulation unit 212 may be input to the control unit 270. The control unit 270 controls demultiplexing, video / audio signal processing, and the like, and controls the output of audio through the display unit 270 and the audio output through the audio output unit 250.

The external device interface unit 220 provides an interface environment between the multimedia device 200 and various external devices. To this end, the external device interface unit 220 may include an A / V input / output unit (not shown) or a wireless communication unit (not shown).

The external device interface unit 220 may be a digital versatile disk (DVD), a Blu-ray, a game device, a camera, a camcorder, a computer (notebook), a tablet PC, a smart phone, device, an external device such as a cloud, or the like. The external device interface unit 220 transmits a signal including data such as image, image, and voice input through the connected external device to the controller 270 of the multimedia device 200. The control unit 270 may control the processed image, video, audio, and the like to be output to an external device to which the data signal is connected. To this end, the external device interface unit 220 may further include an A / V input / output unit (not shown) or a wireless communication unit (not shown).

The A / V input / output unit includes a USB terminal, a Composite Video Banking Sync (CVBS) terminal, a component terminal, an S-video terminal (analog), and a video signal input terminal so that video and audio signals of an external device can be input to the multimedia device 200. [ A DVI (Digital Visual Interface) terminal, an HDMI (High Definition Multimedia Interface) terminal, an RGB terminal, a D-SUB terminal, and the like.

The wireless communication unit can perform wireless communication with another digital device. The multimedia device 100 may be, for example, a wireless LAN (WLAN), a wireless fidelity (Wi-Fi), a wireless fidelity , infrared data association (UWB), Ultra Wideband (UWB), ZigBee, and DLNA (Digital Living Network Alliance).

Also, the external device interface unit 220 may be connected to the set-top box STB through at least one of the various terminals described above to perform input / output operations with the set-top box STB.

Meanwhile, the external device interface unit 220 may receive an application or application list in an adjacent external device, and may transmit the received application or application list to the controller 270 or the memory 230.

The network interface unit 213 provides an interface for connecting the multimedia device 200 to a wired / wireless network including the Internet network. The network interface unit 213 may include an Ethernet terminal or the like for connection to a wired network and may be a WLAN (Wireless LAN) (Wi- (WiBro), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access, Bluetooth), Radio Frequency Identification (RFID) Ultra Wideband), ZigBee, Near Field Communication (NFC), Wireless-Fidelity (Wi-Fi), Wi-Fi Direct and Wireless USB (Universal Serial Bus).

The network interface unit 213 can transmit or receive data to another user or another digital device via the network to which it is connected or another network linked to the connected network. Particularly, it is possible to transmit some content data stored in the multimedia device 200 to another user registered in advance in the multimedia device 200 or a selected one of the other digital devices or a selected digital device.

On the other hand, the network interface unit 213 can access a predetermined web page through the connected network or another network linked to the connected network. That is, it is possible to access a predetermined web page through a network and transmit or receive data with the server. In addition, content or data provided by a content provider or a network operator may be received. That is, it can receive content and related information of a movie, an advertisement, a game, a VOD, a broadcast signal, and the like provided from a content provider or a network provider through a network. In addition, it can receive update information and an update file of firmware provided by the network operator. It may also transmit data to the Internet or a content provider or network operator.

In addition, the network interface unit 213 can select and receive a desired application from the open applications through the network.

The memory 230 may store a program for each signal processing and control in the control unit 270, and may also store signal-processed video, audio, or data signals.

The memory 230 may also function to temporarily store video, audio, or data signals input from the external device interface 220 or the network interface 213. The memory 230 may store information on a predetermined broadcast channel through a channel memory function.

The memory 230 may store a list of applications or applications input from the external device interface unit 220 or the network interface unit 213. [

The memory 230 may also store various platforms to be described later.

The memory 230 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, an SD or XD memory Etc.), RAM (RAM), ROM (EEPROM, etc.), and the like. The multimedia device 200 may reproduce and provide a content file (a moving image file, a still image file, a music file, a document file, an application file, etc.) stored in the memory 230 to a user. According to an embodiment, the memory 230 may be included and implemented in the controller 270. [

The user interface unit 280 transfers a signal input by the user to the control unit 270 or a signal from the control unit 270 to the user.

For example, the user interface unit 280 receives control signals such as power on / off, channel selection, and screen setting from the remote controller 300 in accordance with various communication methods such as an RF communication method and an infrared (IR) Or transmit the control signal of the control unit 270 to the remote controller 300. [

The user interface unit 280 may transmit a control signal input from a local key (not shown) such as a power key, a channel key, a volume key, and a set value to the controller 270.

The user interface unit 280 transmits a control signal input from a sensing unit (not shown) that senses a user's gesture to the control unit 270 or a signal from the control unit 270 to a sensing unit (Not shown). Here, the sensing unit (not shown) may include a touch sensor, an audio sensor, a position sensor, an operation sensor, and the like.

The control unit 270 generates a signal for video or audio output by demultiplexing or demultiplexing a stream input through the tuner 211, the demodulator 212, or the external device interface 220 And can output.

The video signal processed by the control unit 270 may be input to the display unit 240 and displayed as an image corresponding to the video signal. The video signal processed by the controller 270 may be input to the external output device through the external device interface 220. [

The control unit 270 may include a demultiplexing unit, an image processing unit, and the like.

The control unit 270 may control the overall operation of the multimedia device 200. [ For example, the control unit 270 may control the tuner 211 to control tuning of a RF broadcast corresponding to a channel selected by the user or a previously stored channel.

The control unit 270 may control the multimedia device 200 by a user command or an internal program input through the user interface unit 280. [ In particular, the user can access a network and allow a user to download a desired application or application list into the multimedia device 200.

For example, the control unit 270 controls the tuner 211 so that a signal of a selected channel is input according to a predetermined channel selection command received through the user interface unit 280. And processes video, audio or data signals of the selected channel. The control unit 270 allows the display unit 240 or the audio output unit 250 to output the video or audio signal processed by the user through the channel information selected by the user.

For example, the control unit 270 controls the operation of the external device through the external device interface unit 220 according to the external device video playback command received through the user interface unit 280. For example, , So that a video signal or a voice signal can be output through the display unit 240 or the audio output unit 250.

Meanwhile, the control unit 270 may control the display unit 240 to display an image. For example, a broadcast image input through the tuner 211, an external input image input through the external device interface unit 220, an image input through the network interface unit 213, So that the stored image can be displayed on the display unit 240. At this time, the image displayed on the display unit 240 may be a still image or a moving image, and may be a 2D image or a 3D image.

Also, the control unit 270 can control to reproduce the content. The content at this time may be content stored in the multimedia device 200, received broadcast content, or external input content input from the outside. The content may be at least one of a broadcast image, an external input image, an audio file, a still image, a connected web screen, and a document file.

On the other hand, when entering the application viewing item, the control unit 270 can control to display a list of applications or applications that can be downloaded from the multimedia device 200 or from an external network.

The control unit 270 can control, in addition to various user interfaces, to install and operate an application downloaded from an external network. In addition, by the user's selection, it is possible to control the display unit 240 to display an image related to the executed application.

The display unit 240 converts an image signal, a data signal, an OSD signal processed by the control unit 270 or a video signal and a data signal received from the external device interface unit 220 into R, G, and B signals, respectively Thereby generating a driving signal.

The display unit 240 may be a PDP, an LCD, an OLED, a flexible display, a 3D display, or the like.

Meanwhile, the display unit 240 may be configured as a touch screen and used as an input device in addition to the output device.

The audio output unit 250 receives a signal processed by the control unit 270, for example, a stereo signal, a 3.1 channel signal, or a 5.1 channel signal, and outputs the audio signal. The audio output unit 250 may be implemented by various types of speakers.

In order to detect the gesture of the user, a sensing unit (not shown) having at least one of a touch sensor, a voice sensor, a position sensor, and an operation sensor may be further included in the multimedia device 200 . A signal sensed by a sensing unit (not shown) may be transmitted to the controller 270 through the user interface unit 280.

On the other hand, a photographing unit (not shown) for photographing a user may be further provided. The image information photographed at the photographing unit (not shown) may be input to the control unit 270. [

The control unit 270 may sense a gesture of the user by combining the images captured by the photographing unit (not shown) or the signals sensed by the sensing unit (not shown).

The power supply unit 260 supplies corresponding power to the multimedia device 200.

Particularly, it is possible to supply power to a control unit 270 that can be implemented in the form of a system-on-chip (SoC), a display unit 240 for displaying an image, and an audio output unit 250 for audio output .

To this end, the power supply unit 190 may include a converter (not shown) for converting the AC power into DC power. Meanwhile, for example, when the display unit 240 is implemented as a liquid crystal panel having a plurality of backlight lamps, an inverter (not shown) that can perform a PWM (Pulse Width Modulation) operation for variable luminance or dimming driving and an inverter (not shown).

The remote controller 300 transmits the user input to the user interface unit 280. To this end, the remote controller 300 can use Bluetooth, RF (radio frequency) communication, infrared (IR) communication, UWB (Ultra Wideband), ZigBee, or the like.

Also, the remote controller 300 can receive the video, audio, or data signal output from the user interface unit 280, display it on the remote controller 300, or output sound or vibration.

The multimedia device 200 may be a digital broadcasting receiver capable of processing digital broadcasting signals of fixed or mobile type ATSC or DVB.

In addition, the display device according to the present invention may further include a configuration that omits some of the configuration shown in FIG. On the other hand, the display device may not receive the tuner and the demodulator, and may receive and reproduce the content through the network interface unit or the external device interface unit, unlike the above.

FIG. 4 is a block diagram illustrating a detailed configuration of the controller of FIG. 3 according to an embodiment of the present invention.

The control unit 270 of the multimedia device 200 according to an embodiment of the present invention includes a demultiplexing unit 271, an image processing unit 272, an OSD generating unit 273, a mixer 274, A frame rate converter (FRC) 275, and a formatter 276. In addition, although not shown, the control unit 270 may further include a voice processing unit and a data processing unit.

The demultiplexer 271 demultiplexes the input stream. For example, the demultiplexer 271 can demultiplex the received MPEG-2 TS video, audio, and data signals. Here, the stream signal input to the demultiplexer 271 may be a stream signal output from a tuner, a demodulator, or an external device interface.

The image processing unit 272 performs image processing of the demultiplexed video signal. To this end, the image processing unit 272 may include a video decoder 272a and a scaler 272b.

The video decoder 272a decodes the demultiplexed video signal, and the scaler 272b scales the decoded video signal so that the resolution of the decoded video signal can be output from the display unit.

The video decoder 272a may support various standards. For example, the video decoder 272a performs the function of an MPEG-2 decoder when the video signal is encoded in the MPEG-2 standard, and the video decoder 272a encodes the video signal in the DMB (Digital Multimedia Broadcasting) It can perform the function of the H.264 decoder.

On the other hand, the video signal decoded by the video processor 272 is input to the mixer 274.

The OSD generating unit 273 generates OSD data according to a user input or by itself. For example, the OSD generation unit 155 generates data for displaying various data in graphic or text form on the screen of the display unit 240 based on the control signal of the user interface unit 280 . The generated OSD data includes various data such as a user interface screen (e.g., a GUI) of the multimedia device 100, various menu screens, a widget, an icon, and viewing rate information do. The OSD generating unit 274 may generate data for displaying broadcast information based on the caption of the broadcast image or the EPG.

The mixer 274 mixes the OSD data generated by the OSD generator 155 and the image signal processed by the image processor and provides the mixed image to the formatter 276. Since the decoded video signal and the OSD data are mixed, the OSD is overlaid on the broadcast image or the external input image.

A frame rate conversion unit (FRC) 275 converts the frame rate of an input image. For example, the frame rate conversion unit 275 may convert the frame rate of the input 60 Hz image to have a frame rate of 120 Hz or 240 Hz, for example, in accordance with the output frequency of the display unit. As described above, there are various methods for converting the frame rate. For example, when the frame rate is converted from 60 Hz to 120 Hz, the frame rate conversion unit 275 may insert the same first frame between the first frame and the second frame, Three frames can be inserted. As another example, when converting the frame rate from 60 Hz to 240 Hz, the frame rate conversion unit 275 may insert and convert three or more identical or predicted frames between existing frames. On the other hand, when the frame conversion is not performed, the frame rate conversion unit 275 may be bypassed.

The formatter 276 changes the output of the input frame rate converter 275 to match the output format of the display unit. For example, the formatter 276 may output R, G, B data signals, which may be output as low voltage differential signals (LVDS) or mini-LVDS . If the output from the input frame rate converter 275 is a 3D video signal, the formatter 276 constructs a 3D format corresponding to the output format of the display unit and outputs the 3D service through the display unit 240, It can also support.

On the other hand, the audio processing unit (not shown) in the control unit 270 can perform the audio processing of the demultiplexed audio signal. Such a voice processing unit (not shown) may support processing various audio formats. For example, even when a voice signal is coded in a format such as MPEG-2, MPEG-4, AAC, HE-AAC, AC-3, or BSAC, a corresponding decoder can be provided.

In addition, the audio processing unit (not shown) in the control unit 270 can process the base, the treble, the volume control, and the like.

A data processing unit (not shown) in the control unit 270 can perform data processing of the demultiplexed data signal. For example, the data processing unit can decode the demultiplexed data signal even when it is coded. Here, the encoded data signal may be EPG information including broadcast information such as a start time and an end time of a broadcast program broadcasted on each channel.

Meanwhile, the above-described multimedia device 200 is an example according to the present invention, and each component can be integrated, added, or omitted according to specifications of a display device actually implemented. That is, if necessary, two or more components may be combined into one component, or one component may be divided into two or more components. In addition, the functions performed in each block are intended to illustrate the embodiments of the present invention, and the specific operations and devices thereof do not limit the scope of rights of the present invention.

5 is a diagram illustrating examples of a remote controller for controlling a multimedia device according to an exemplary embodiment of the present invention.

In order to control the multimedia device 200, a front panel (not shown) provided on the multimedia device 200 may be used or a remote controller 300 may be used.

The remote controller 300 is a user interface device (UID) capable of wireless communication and mainly includes a remote controller 310, a keyboard 330, a pointing device 320, , A touch pad (touch pad), and the like. In addition, the remote controller 300 may include a mobile device such as a smart phone, a tablet PC, and the like that can control the multimedia device 200 through mode switching or the like, not for the purpose of controlling the multimedia device 200.

The remote controller 300 may be any one of Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (UDA), Ultra Wideband (UWB), ZigBee, Digital Living Network Alliance (DLNA) It is possible to communicate with the multimedia device 200 by employing at least one communication protocol.

The remote controller 310 is a conventional input means having various key buttons necessary for controlling the multimedia device 200. [

The pointing device 320 may include a gyro sensor or the like to implement a corresponding pointer on the screen of the multimedia device 200 based on the user's motion, The control command is transmitted. Such a pointing device 320 may be named with various names such as a magic remote controller, a magic controller, and the like.

The keyboard 330 provides a variety of services such as a web browser, an application, and a social network service (SNS) as an intelligent integrated digital device beyond that of the multimedia device 200 providing conventional broadcasting only. It is not easy, and it is implemented to complement input and realize input convenience such as text by implementing similar to PC keyboard.

The remote controller 300 such as the remote controller 310, the pointing device 330 and the keyboard 320 may be provided with a touch pad as required to facilitate text input, pointer movement, And can be used for various control purposes.

Hereinafter, a residual image removing method according to an embodiment of the present invention will be described with reference to FIGS. 6 to 48. FIG.

6 is a flowchart for explaining an example of a method of removing a residual image in a display device according to an embodiment of the present invention.

First, a case where the display device is the mobile terminal 100 shown in FIG. 2 will be described as an example.

The control unit 180 of the mobile terminal 100 executes the application for the afterimage removal (S401). When the afterimage appears on the display unit 151 during use of the mobile terminal 100, the user can execute a menu for the afterimage removal.

The control unit 180 displays the first screen for the afterimage removal on the display unit 151 (S402). The first screen may be a screen corresponding to the first wavelength region among lights of various wavelength regions emitted from the display unit 151. For example, the display unit 151 may include at least one of a blue light emitting element, a Red light emitting element, and a Green light emitting element, and may include at least one of a blue light emitting element, a Red light emitting element, and a Green light emitting element, . The afterimage removal process according to an embodiment of the present invention may be performed in a preset sequence for each R / G / B / W light emitting device provided in the display unit 151, R / G / B / W light emitting devices. For example, when the afterimage generated by the blue light emitting device is to be removed, the controller 180 deactivates the light emitting devices that emit light in other wavelength regions, (151).

The controller 180 detects a first user command for selecting a residual image area in the first screen (S403). The residual image is generated because the region (for example, the corresponding light emitting element) of the display unit 151 can not exhibit the luminance due to the deterioration of the element. In this case, There may be a residual image that can be perceived by the user. The first user command may correspond to a touch input through the touch screen when the display unit 151 is a touch screen. The user can touch an area where the afterimage appears on the first screen displayed on the display unit 151. [

For example, the afterimage appearing on the display unit 151 of the mobile terminal 100 may include a first indicator indicating reception sensitivity of a radio signal displayed on a notification bar at the top of the screen, a second indicator indicating a remaining battery capacity, A third indicator indicating whether a wireless signal is transmitted or received through an external server and a communication network, a fourth indicator indicating whether the notification mode is a sound mode or a vibration mode, a fifth indicator indicating a mobile communication company, etc. A seventh indicator indicating a menu for returning to a previous screen, a menu for confirming the history of applications used within a predetermined time, a sixth indicator indicating a menu for entering a main home screen displayed at the bottom of the screen, And the like.

According to the embodiment, the control unit 180 may apply a correction algorithm or the like when the trajectory displayed on the display unit 151 is uneven by the first user command due to the shaking of the user's hand or the like.

According to the embodiment, the memory 170 may store indicator related information related to the indicator that can be output to the display unit 151. Here, the indicator-related information may include at least one of first information on the type of the indicator and second information related to a position where the indicator is displayed on the screen of the display unit 151. The control unit 180 outputs a GUI including indicators corresponding to the indicator related information stored in the memory 170 to the display unit 151 and displays indicator related information related to the indicator selected by the user command among the indicators May be used to detect the afterimage area. Alternatively, according to the embodiment, the logo 170 related to the logo of the channel that can be viewed through the mobile terminal 100 or the logo of the program may be stored in the memory 170, and the control unit 180 may select, Related information related to the logo may be used to detect the after-image area.

The control unit 180 displays a first GUI on the display unit 151 for adjusting the brightness of the display unit 151 corresponding to the peripheral area of the residual image area selected by the first user command (S404). Here, the display unit 151 corresponding to the peripheral area of the afterimage area may mean only the area of the display unit 151 corresponding to the border of the afterimage area, the display 151 corresponding to the peripheral area including the border of the afterimage area, May refer to an area of the second area 151. The control unit 180 detects the afterimage area generated on the display unit 151 based on the afterimage area selected by the first user command. Here, if there is an indicator selected by the user, the afterimage area selected by the first user command and the information related to the selected indicator may be referred to to detect the afterimage area. The display unit 151 is controlled to display a first GUI for controlling the brightness of the display unit 151 (for example, the brightness of the Blue light emitting device) corresponding to the peripheral area of the detected after-image area.

According to an embodiment, the first GUI may include a control bar for adjusting the brightness of the display unit 151 corresponding to the peripheral area, and an indicator that is movable on the control bar. According to the embodiment, the first GUI may include a + menu icon for adjusting the brightness of the display part 151 corresponding to the peripheral area and / And may include a menu icon.

Alternatively, the first GUI may include a first menu for adjusting the brightness of the display unit 151 corresponding to the peripheral region to a first level and a display unit 151 corresponding to the peripheral region, And a second menu for adjusting the luminance of the first display unit to a second level lower than the first display unit.

The control unit 180 adjusts the brightness of the display unit 151 corresponding to the peripheral area according to the second user command received through the first GUI (S405). The second user command may include a user command to move an indicator included in the first GUI on an adjustment bar, and may include a + menu icon and / or a menu icon included in the first GUI. A user command for selecting the menu icon at least once, or a user command for selecting the first menu or the second menu included in the first GUI.

According to the embodiment, the controller 180 may adjust the luminance of the display unit 151 corresponding to the predetermined peripheral region of the detected residual image region, and may adjust the luminance of the display region 151 corresponding to the remaining region except for the detected after- The brightness of the display unit 151 may be adjusted. Here, the adjustment of the luminance of the display unit 151 means that the luminance of the display unit 151 corresponding to the peripheral area of the afterimage area is lower than the originally set level, As shown in FIG. For example, the gain value may mean a value of APL (Average Picture Level) data applied to the display unit 151 corresponding to a peripheral area of the afterimage area.

The control unit 180 maps the gain value to the area of the display unit 151 corresponding to the peripheral area of the afterimage area and stores the result in the memory 170. [

The user may terminate the afterimage removal process or re-execute the above steps on the second screen. The second screen may be a screen corresponding to the second wavelength region among lights of various wavelength regions emitted from the display unit 151. For example, when the display unit 151 includes a light emitting device, the controller 180 deactivates the light emitting devices that emit light in different wavelength regions, and displays the second activated screen only the Green light emitting devices on the display unit 151).

The multimedia device 200 shown in FIG. 3 will be described below as an example. The contents overlapping with those described above with respect to the case where the display device is the mobile terminal 100 will not be described again.

The control unit 270 of the multimedia device 200 executes an application for image retention (S401). The user can execute a menu for afterimage removal when the afterimage appears on the display unit 240 during use of the multimedia device 200. [

The control unit 270 displays the first screen for the afterimage removal on the display unit 240 (S402). The first screen may be a screen corresponding to the first wavelength region among lights of various wavelength regions emitted from the display unit 240. For example, when the display unit 240 includes a light emitting device, the display unit 240 may include at least one of a blue light emitting device, a Red light emitting device, and a Green light emitting device. Device, a Green light emitting device, and a white light emitting device. For example, when the afterimage generated by the blue light emitting device is to be removed, the controller 270 deactivates the light emitting devices that emit light in other wavelength regions, (240).

The controller 270 detects a first user command for selecting a residual image area in the first screen (S403). The first user command may be transmitted from the remote controller 300 for controlling the multimedia device 200. The user can select the afterimage area through the pointer corresponding to the motion of the remote controller 300 on the first screen displayed on the display unit 240. [

For example, the afterimage area displayed on the display unit 240 of the multimedia device 200 may correspond to a logo of a channel that can be viewed through the multimedia device 200, a logo of a program transmitted through each channel, and the like.

According to the embodiment, the memory 230 may store logo related information related to a logo of a channel viewable through the multimedia device 200, a logo of a program transmitted through each channel, and the like. Here, the logo-related information may include at least one of first information related to the shape of the logo and second information related to a position where the logo is displayed on the screen of the display unit 240. The control unit 180 outputs a GUI including logos corresponding to the logo related information stored in the memory 230 to the display unit 240 and displays logo related information related to the logo selected by the user command May be used to detect the afterimage area. Alternatively, according to the embodiment, the memory 230 may store indicator related information related to the indicator that can be output to the display unit 240. Here, the indicator that can be output to the display unit 240 may be an indicator displayed at the upper or lower notification bar or menu bar of the screen. The control unit 270 may use indicator related information related to the indicator selected by the user to detect the afterimage area.

The control unit 270 displays a first GUI on the display unit 240 for adjusting the brightness of the display unit 151 corresponding to the peripheral region of the after-image area selected by the first user command (S404). Here, the display unit 240 corresponding to the peripheral area of the afterimage area may refer only to the area of the display unit 240 corresponding to the border of the afterimage area, or may include a display corresponding to the peripheral area including the border of the afterimage area May refer to an area of the portion 240 as shown in FIG. The control unit 270 detects the afterimage area generated on the display unit 240 based on the afterimage area selected by the first user command. Here, if there is a logo selected by the user, the afterimage area selected by the first user command and the information related to the selected logo may be referred to to detect the afterimage area. The display unit 240 is controlled to display a first GUI for adjusting the brightness of the display unit 240 corresponding to the peripheral area of the detected after-image area.

The control unit 270 adjusts the brightness of the display unit 240 corresponding to the peripheral area according to a second user command received through the first GUI (S405). The control unit 270 maps the gain value to the display unit 240 corresponding to the peripheral area of the afterimage area, and stores the result in the memory 230. [

Hereinafter, an example of the afterimage removal method described above with reference to FIG. 6 will be described with reference to FIGS. 7 to 16, taking an example in which the display device to be subjected to the afterimage removal is the multimedia device 200 do.

7 is a view for explaining an example of a screen displayed on a display unit when a residual image removal application is executed in a multimedia device according to an embodiment of the present invention.

The control unit 270 of the multimedia device 200 may execute an application for image retention and output the execution screen 410 to the display unit 240. [ The user can execute a menu for afterimage removal when the afterimage appears on the display unit 240 during use of the multimedia device 200. [

In this embodiment, it is assumed that the display unit 240 includes a blue light emitting element, a Red light emitting element, a Green light emitting element, and a White light emitting element.

The afterimage removal process by the application for the afterimage removal may be performed in a predetermined order for each of the R, G, B, and W light emitting devices included in the display unit 240, / G / B / W light emitting device. In this embodiment, it is assumed that the user carries out the afterimage removal process only for the Blue light emitting element and the Green light emitting element.

8 is a view for explaining an example of a screen displayed on a display unit when a residual image removal application is executed in a multimedia device according to an embodiment of the present invention.

When the user selects the confirmation menu 411 on the execution screen 240 shown in Fig. 7, the screen of Fig. 8 can be output to the display unit 240. [ First, a residual image removing process for a blue light emitting device will be described.

The controller 270 includes a light emitting element (for example, a G / R / G light emitting element) that is activated and emits light in another wavelength range, the first light emitting element W light emitting device) can output the inactivated first screen 420 to the display unit 240. [ In order to confirm the afterimage displayed by the first light emitting device, it is desired to check the first screen 420 when the first light emitting device is activated. In the present embodiment, it is assumed that a residual image S called "LOGO " appears on the first screen 420.

The control unit 270 may control the display unit 240 to output the guidance message 421 for selecting the afterimage area on the first screen 420 using the remote controller 300. [ The user can select a residual image area corresponding to the residual image S using the remote controller 300. [

9 is a diagram for explaining an example of a method of selecting a residual image area using a remote controller in a multimedia device according to an embodiment of the present invention.

Referring to FIG. 9, the afterimage S displayed on the first screen 420 is enlarged and shown.

The user can select the afterimage area using the pointer P corresponding to the motion of the remote controller 300. [ For example, it is possible to select the afterimage area by causing the pointer P to pass the edge of the afterimage S in a state where a specific button provided on the remote controller 300 is pressed. A locus 421 corresponding to the movement of the pointer P may be displayed in a portion where the pointer P has passed while a specific button provided in the remote controller 300 is pressed. According to the embodiment, when the residual image S is too small to select the afterimage area using the remote controller 300, the controller 270 enlarges the display magnification of the first screen 420 The display unit 240 may be controlled.

Alternatively, the controller 270 controls the display unit 420 to display a grid pattern including a plurality of cells on the first screen 420 when the display magnification of the first screen 420 is enlarged The display unit 240 may be controlled. Each of the cells may correspond to each of the pixels of the image forming the first screen 420 and may correspond to two adjacent pixels or four of the pixels of the image forming the first screen 420. The user can easily select the afterimage area by selecting the cells included in the plaid pattern using the pointer P corresponding to the movement of the remote controller 300. [

According to an embodiment of the present invention, when expanding the display magnification of the first screen 420, the controller 270 may enlarge a portion of the first screen 420 including the point P where the pointer P is located And outputs the partial enlargement screen to the display unit 240. The partial enlargement screen may be overlaid on the first screen 420 where the display magnification is not changed. In addition, the partial enlargement screen may be changed in position on the first screen 420 in correspondence with the movement of the pointer P.

According to an embodiment of the present invention, when the display magnification of the first screen 420 is enlarged, the controller 270 displays the magnified portion of the first screen 420 on the display unit 240, The display unit 240 may output a graphic image for indicating which part of the entire unchanged first screen 420 corresponds. The graphic image may be overlaid on a portion of the display 240 where the first screen 420 is enlarged and displayed.

10 is a diagram for explaining another example of a method of selecting a residual image area using a remote controller in a multimedia device according to an embodiment of the present invention.

Referring to FIG. 10, the afterimage S displayed on the first screen 420 is enlarged and shown.

The user can select the afterimage area using the pointer P corresponding to the motion of the remote controller 300. [ However, in this case, it may be difficult to select the afterimage area to accurately reflect the actual afterimage S using the remote controller 300 due to the shaking of the user's hand.

10 (a), when the locus 421a displayed by the remote controller 300 is uneven, the control unit 270 applies the predetermined correction algorithm or the like to the locus 421a, Can be corrected in the form of a locus 421b as shown in (b) of FIG. For example, the control unit 270 can grasp the intention of the user to move the pointer P on the straight line in the downward direction based on the shape of the locus 421a, It is possible to output to the display unit 240 a straight line trace 421b connecting the point P at which the pointer P is pressed and the point at which the pointer P is positioned when the specific button is released .

11 is a view for explaining another example of a method of selecting a residual image area using a remote controller in a multimedia device according to an embodiment of the present invention.

Referring to FIG. 11, the afterimage S shown on the first screen 420 is enlarged and shown.

The user can select the afterimage area using the pointer P corresponding to the motion of the remote controller 300. [ However, in this case, it may be difficult to select the afterimage area to accurately reflect the actual afterimage S using the remote controller 300 due to the shaking of the user's hand.

The control unit 270 may output the figure menu 430 that the user can use to the display unit 240 in order to further facilitate the selection of the afterimage using the remote controller 300. [ For example, the figure menu 430 includes a first menu 431 corresponding to a straight line, a second menu 432 corresponding to a curve, a third menu 433 corresponding to a rectangle, a fourth menu 433 corresponding to a rectangle, Menu 434, and the like.

For example, the user can select the first menu 431 corresponding to the straight line using the remote controller 300, and when the first menu 431 is activated, the user can select the first menu 431 corresponding to the movement of the remote controller 300 It is possible to select the afterimage area using the corresponding pointer P.

As described above with reference to Figs. 9 to 11, when the user selects an afterimage area using the remote controller 300 and then presses an OK button, the controller 270 can detect the afterimage area on the basis of the afterimage area.

According to an embodiment of the present invention, the control unit 270 may utilize information related to the logo selected by the user in detecting the afterimage area on the first screen 420. [ This will be described with reference to FIG.

12 is a view for explaining an example of a method of selecting a logo related to afterimage displayed on a display unit in a multimedia device according to an embodiment of the present invention.

The memory 230 of the multimedia device 200 may store logo related information related to a logo of a channel viewable through the multimedia device 200, a logo of a program transmitted through each channel, and the like. Here, the logo-related information may include at least one of first information related to the shape of the logo and second information related to a position where the logo is displayed on the screen of the display unit 240. The second information may include coordinate information for indicating where the logo is located on the screen of the display unit 240. [ For example, the coordinate information may include accurate coordinate information on the entire region displayed as a logo, not on which area the logo is located on the screen of the display unit 240.

Generally, in the case of the same channel, the logo of the broadcasting station is often displayed at the same position on the screen. Since such a logo is expressed by a still image that does not move, the light emitting element of the display unit 240, high portential. In addition, even in the case of the same program, the logo of the program is often displayed at the same position on the screen, and such a logo is also expressed by a still image which does not move, so that a residual image due to deterioration of the corresponding light emitting element may occur. Thus, the logo related information related to the logo of the specific channel and the logo related information related to the logo of the specific program are stored in the memory 230, and the control unit 270 can use the stored logo related information to detect the afterimage area .

Such logo related information can be downloaded from an external server and updated periodically or aperiodically. According to an embodiment, when the EPG data in the broadcast signal includes the logo-related information, the controller 270 may obtain the logo-related information by parsing the EPG data.

The control unit 270 can control the display unit 240 to display the GUI 440 including the logos corresponding to the logo related information stored in the memory 230. [ The GUI 440 may be output after the afterimage area is selected by the remote controller 300 as described above with reference to Figs. 8 to 11, or may be displayed before the afterimage area is selected by the remote controller 300 And may be output irrespective of the selection of the afterimage area by the remote controller 300. [

The GUI 440 may include a list of all the logos corresponding to the logo related information stored in the memory 230 and may be displayed on the memory 230 after the afterimage area is selected by the remote controller 300. [ It may include only a list of logos that are determined to be similar to the shape and position of the selected afterimage area among all the logos corresponding to the related information.

Suppose the user selects "LOGO" associated with the afterimage (S) from among the logos contained in the GUI 440 and selects the confirm menu 441. The control unit 270 can determine the type of the "LOGO" and the position on the screen of the display unit 240 based on the logo-related information stored in the memory 230. [

For example, when the GUI 440 is output before or after the afterimage area is selected by the remote controller 300 as described above with reference to Figs. 8 to 11, the controller 270 controls the remote controller 300 ) And the logo-related information stored in the memory 230, it is possible to detect the after-image area corresponding to the afterimage S displayed on the first screen 420 more accurately. According to the embodiment, before outputting the GUI 440 to the display unit 240, the control unit 270 detects the afterimage area on the basis of the afterimage area selected by the remote controller 300, And outputs the GUI including information on the afterimage area to the display unit 240. [ For example, the information on the deteriorated afterimage area may be information related to the detected afterimage area of the logo related information stored in the memory 230, or may be information related to the detected afterimage area, Icons, logos, and the like. The GUI may include a guidance message for confirming whether or not the detected afterimage area coincides with the afterimage visible to the user. Alternatively, the control unit 270 may display the GUI 440 in the memory 230 even when the GUI 440 is output without selection of the afterimage area by the remote controller 300 as described above with reference to Figs. 8 to 11 It is possible to detect the afterimage area corresponding to the afterimage S displayed on the first screen 420 based on the stored logo related information.

13 and 14 are views for explaining an example of a GUI displayed on a display unit to remove a residual image when a residual image area is detected in a multimedia device according to an embodiment of the present invention.

13, when the afterimage area is detected, the controller 270 of the multimedia device 200 displays the luminance of the display unit 140 corresponding to the peripheral area of the detected afterimage area (for example, To the display unit 240, a first GUI 450 for adjusting the luminance of the first light emitting device corresponding to the peripheral area of the detected after-image area.

In one example, the first GUI 450 may include a control bar 451 and an indicator 452 movable on the control bar 451 to control the brightness of the first light emitting device corresponding to the peripheral area have. The control unit 240 increases the brightness of the first light emitting device corresponding to the peripheral region when the indicator 452 moves to the right on the control bar 451 and the indicator 452 increases the brightness of the first light emitting device corresponding to the peripheral region, The luminance of the first light emitting device corresponding to the peripheral region can be reduced. Since the afterimage S is generated because the corresponding light emitting element can not exhibit the luminance due to the deterioration of the element, by reducing the luminance of the light emitting element corresponding to the peripheral region of the afterimage region, It will make you not stand out. According to the embodiment, since the present embodiment is for removing the afterimage S, the indicator 452 moves on the control bar 451 only in the direction for reducing the brightness of the first light emitting element corresponding to the peripheral region The first GUI 450 may be implemented.

14, the user moves the indicator 452 on the control bar 451 until the afterimage S is not visible on the first screen 420, Can be adjusted.

The control unit 270 sets the gain value corresponding to the point on the control bar 451 on which the indicator 452 is located to the value corresponding to the peripheral region 451 when the confirmation menu 453 in the first GUI 450 is selected, 1 light emitting device and may be stored in the memory 230.

According to an embodiment of the present invention, when the brightness of the display unit 240 selected by the first GUI 450 is lower than a predetermined level, the control unit 270 displays the screen of the display unit 240 corresponding to the after- (Or a warning message) that this may appear dark.

FIG. 15 is a diagram for explaining another example of a GUI displayed on a display unit to remove a residual image when a residual image area is detected in a multimedia device according to an embodiment of the present invention.

When the afterimage area is detected, the controller 270 of the multimedia device 100 determines whether the luminance of the display unit 140 corresponding to the peripheral area of the detected afterimage area (for example, To the display unit 240, a second GUI 460 for adjusting the luminance of the first light emitting device corresponding to the peripheral region of the first light emitting device.

For example, the second GUI 460 includes a first menu 461 for adjusting the brightness of the first light emitting device corresponding to the peripheral region to a predetermined first level, A second menu 462 for adjusting the second level and a third menu 463 for adjusting the third level lower than the second level.

The control unit 270 controls the number of times of the afterimage removal process performed on the Blue light emitting device so far, the time that has been performed so far from the immediately preceding afterimage removing process performed on the Blue light emitting device, The gain value corresponding to each of the first level, the second level and the third level can be determined in consideration of the applied gain value and the like. The gain values corresponding to the first level, the second level and the third level may be different each time the type of the light emitting element and the afterimage removal process are performed.

If the user selects one of the first menu 461, the second menu 462 and the third menu 463 and then selects the preview menu 464, the control unit 270 displays a menu corresponding to the selected menu The brightness level of the first light emitting device corresponding to the peripheral area can be adjusted using the gain value, and a preview screen including the adjustment result can be output to the display unit 240. [ The user determines whether to finally select one of the first menu 461, the second menu 462, and the third menu 463 in consideration of the degree and the presence or absence of the afterimage S displayed on the preview screen . When the user selects one of the first menu 461, the second menu 462 and the third menu 463 and then selects the confirmation menu 465, the controller 270 displays a gain corresponding to the selected menu May be mapped to the first light emitting device corresponding to the peripheral region and stored in the memory 230. [

According to the embodiment, when the second menu 162 or the third menu 163 is selected through the second GUI 460, the control unit 270 instructs the user to select the display unit 240 corresponding to the after- A warning message (or warning message) indicating that the screen may appear dark may also be displayed.

16 is a view for explaining an example of a screen displayed on a display unit when a residual image removal application is executed in a multimedia device according to an embodiment of the present invention.

7, since the user has selected to carry out the afterimage removal process with respect to the Blue light emitting device and the Green light emitting device, the afterimage removal process for the green light emitting device can be performed after the afterimage removing process for the Blue light emitting device is completed have.

The control unit 270 includes a light emitting element (for example, a B / R / G light emitting element) that activates a second light emitting element (for example, a Green light emitting element) that emits light in a second wavelength range, W light emitting device) can output the inactivated second screen 470 to the display unit 240. [ In the present embodiment, it is assumed that a residual image S called "LOGO " appears on the second screen 470.

The control unit 270 may control the display unit 240 to output the guidance message 471 for selecting the afterimage area on the second screen 470 using the remote controller 300. [ The user can select a residual image area corresponding to the residual image S using the remote controller 300. [

The subsequent steps are the same as or similar to those described above with reference to Figs. 9 to 15, and thus a detailed description thereof will be omitted.

Hereinafter, with reference to FIGS. 17 to 20, an example of the afterimage-removing method described above with reference to FIG. 6 will be described by taking, as an example, a case where the display device to be subjected to afterimage removal is the mobile terminal 100 do. However, the contents overlapping with those described above with reference to Figs. 7 to 16 will not be described in detail, and the contents described above will be referred to for duplicate contents.

17 is a diagram for explaining an example of a screen displayed on the display unit when a residual image removal application is executed in a mobile terminal according to an embodiment of the present invention.

In this embodiment, a residual image removal process for the first light emitting element corresponding to the first wavelength region among the bladder elements emitting light in various wavelength ranges included in the display unit 151 will be described as an example.

The control unit 180 of the mobile terminal 100 displays the first screen 510 inactivated by the display unit 510 as a display unit, And outputs it to the unit 151. [ In the present embodiment, it is assumed that a residual image T corresponding to an indicator indicating a menu for returning to a previous screen appears.

The control unit 180 may control the display unit 151 to output the guidance message 511 to the first screen 510 to select the afterimage area. The user can touch the touch screen 151 to select a residual image area corresponding to the residual image T. [ When the user touches the touch screen 151 to select the afterimage area, the locus corresponding to the touch input can be displayed on the display unit 151. [ According to the embodiment, when the size of the afterimage T is small and it is difficult for the user to accurately touch the afterimage area by hand, the controller 180 sets the display magnification of the first screen 510 according to a predetermined touch input The display unit 151 may be controlled. The control unit 180 can detect the afterimage area displayed on the first screen 510 based on the afterimage area selected by the user's touch input.

According to an embodiment of the present invention, when the display magnification of the first screen 510 is enlarged, the controller 180 displays a grid pattern including a plurality of cells on the first screen 510 The display unit 151 may be controlled. Each of the cells may correspond to each of the pixels of the image forming the first screen 510 and may correspond to two adjacent pixels or four of the pixels of the image forming the first screen 510. The user can easily select the afterimage area by selecting the cells included in the grid pattern.

According to an embodiment of the present invention, when expanding the display magnification of the first screen 510, the controller 180 may enlarge a portion of the first screen 510 including the point P where the pointer P is located And outputs the partial enlarged screen to the display unit 151. The partial enlarged screen may be overlaid on the first screen 510 where the display magnification is not changed. In addition, the partial enlargement screen may be changed in position on the first screen 510 in correspondence with the movement of the pointer P.

According to an embodiment of the present invention, when the display magnification of the first screen 510 is enlarged, the control unit 180 may display the magnified portion of the first screen 510 on the display unit 151, To the display unit 151, a graphic image for indicating which part of the entire unchanged first screen 510 corresponds. The graphic image may be overlaid on a portion of the display unit 151 where the first screen 510 is enlarged and displayed. In the case where the user selects the afterimage area, it is needless to say that the above-described contents in conjunction with Figs. 10 and 11 can be equally or similarly applied to the mobile terminal 100. Fig.

Meanwhile, according to an embodiment of the present invention, the controller 180 may utilize information related to the indicator selected by the user in detecting the afterimage area on the first screen 510. This will be described with reference to FIG.

18 is a view for explaining an example of a method of selecting an indicator related to a residual image displayed on a display unit in a mobile terminal according to an embodiment of the present invention.

The memory 170 of the mobile terminal 100 may store indicator related information related to the indicators that can be output to the display unit 151. [ Here, the indicator-related information may include at least one of first information on the type of the indicator and second information related to a position where the indicator is displayed on the screen of the display unit 151. The second information may include coordinate information for indicating where the indicator is located on the screen of the display unit 151. [ For example, the coordinate information may include accurate coordinate information on the entire area displayed as an indicator, not on which area the indicator is located on the screen of the display unit 151.

The indicator includes a first indicator for indicating reception sensitivity of a radio signal displayed on a notification bar at the top of the screen, a second indicator for indicating a remaining battery capacity, a second indicator for indicating a remaining battery capacity, A fourth indicator indicating whether the notification mode is a sound mode or a vibration mode, a fifth indicator indicating a mobile communication company, or the like, and entering a main home screen displayed at the bottom of the screen A seventh indicator indicating a menu for returning to a previous screen, an eighth indicator corresponding to a menu for confirming the history of applications used within a predetermined time, and the like.

Generally, the same indicator can be displayed at the same position on the screen, and there is a high possibility that the light emitting element of the display unit 151 on which the indicator is displayed is deteriorated. Accordingly, the indicator related information related to the specific indicator is stored in the memory 170, and the controller 180 can use the stored indicator related information to detect the afterimage area.

Such indicator related information can be downloaded from an external server and updated periodically or aperiodically.

In this embodiment, the indicator related information is stored in the memory 170. However, since the mobile terminal 100 may receive the broadcast signal, the logo related information described above with reference to FIG. 12 may also be stored in the memory 170 < / RTI > In this case, the control unit 180 may utilize the logo-related information corresponding to the logo selected by the user in detecting the after-image area.

12, the logo related information is stored in the memory 230 of the multimedia device 200. However, the indicator related information corresponding to the indicator that can be output to the display unit 240 is also stored in the memory 230 Of course, be stored. In this case, the controller 270 may utilize the indicator related information corresponding to the indicator selected by the user in detecting the after-image area.

Referring again to FIG. 18, the control unit 180 may control the display unit 151 to display the GUI 520 including the indicators corresponding to the indicator-related information stored in the memory 170. FIG. The GUI 520 may be output after the afterimage area is selected by the touch input as described above with reference to Fig. 17, or may be output before the afterimage area is selected by the touch input, It may be output irrespective of the selection of the afterimage area.

The GUI 520 may include a list of all indicators corresponding to the indicator related information stored in the memory 170 and may be displayed in the memory 170 when the afterimage area is selected by the touch input, And may include only a list of indicators that the selected afterimage area among all corresponding indicators is determined to be similar in shape and position.

Suppose that the user selects an indicator associated with the afterimage (T) among the indicators included in the GUI 520 and selects the confirmation menu 521. The control unit 180 can determine the type of the selected indicator and the position on the screen of the display unit 151 based on the indicator related information stored in the memory 170. [

For example, when the GUI 520 is output before or after the afterimage area is selected by the touch input as described above with reference to Fig. 17, the controller 180 controls the on- It is possible to more accurately detect the afterimage area corresponding to the afterimage T displayed on the first screen 510 based on the indicator related information stored in the indicator 170. According to the embodiment, before outputting the GUI 520 to the display unit 151, the control unit 180 detects the afterimage area on the basis of the afterimage area selected by the touch input, To the display unit 151, the GUI including the information on the display screen. For example, the information on the deteriorated afterimage area may be information related to the detected afterimage area of the logo related information stored in the memory 170, or may be information related to the detected afterimage area, Icons, indicators, and the like. The GUI may include a guidance message for confirming whether or not the detected afterimage area coincides with the afterimage visible to the user.

17, the control unit 180 determines whether the GUI 520 is displayed on the basis of the indicator-related information stored in the memory 170, even if the GUI 520 is output without selection of the afterimage area by the touch input as described above with reference to FIG. And can detect the afterimage area corresponding to the afterimage T displayed on the first screen 510.

FIG. 19 is a diagram for explaining an example of a GUI displayed on the display unit to remove a residual image when a residual image area is detected in the mobile terminal 100 according to an embodiment of the present invention.

19, when the afterimage area is detected, the controller 180 of the mobile terminal 100 controls the brightness of the first light emitting device corresponding to the peripheral area of the detected afterimage area, And can output the GUI 530 to the display unit 151. [

In one example, the first GUI 530 may include a control bar 531 and an indicator 532 movable on the control bar 531 to adjust the brightness of the first light emitting device corresponding to the peripheral area have. The control unit 180 increases the brightness of the first light emitting device corresponding to the peripheral area when the indicator 532 moves to the right on the control bar 531. When the indicator 532 reaches the control bar 531, The luminance of the first light emitting device corresponding to the peripheral region can be reduced.

The user can adjust the brightness of the first light emitting device corresponding to the peripheral area by moving the indicator 532 on the control bar 531 until the afterimage T is not visible on the first screen 510 .

The control unit 180 maps the gain value corresponding to the point on the control bar 451 where the indicator 532 is finally positioned by the user to the first light emitting device corresponding to the peripheral area and stores the result in the memory 170 .

According to the embodiment, when the brightness of the display unit 151 selected by the first GUI 530 is lower than a predetermined level, the user may be notified that the screen of the display unit 151 corresponding to the afterimage area may appear dark A message (or a warning message) may be output.

20 is a view for explaining another example of GUI displayed on the display unit to remove a residual image when a residual image area is detected in a mobile terminal according to an embodiment of the present invention.

When the afterimage area is detected, the controller 180 of the mobile terminal 100 displays a second GUI 540 for adjusting the brightness of the first light emitting device corresponding to the peripheral area of the detected afterimage area And outputs it to the unit 151. [

For example, the second GUI 540 may include a first menu 541 for adjusting the brightness of the first light emitting device corresponding to the peripheral region to a predetermined first level, A second menu 542 for adjusting the second level and a third menu 543 for adjusting the third level lower than the second level.

The control unit 180 controls the number of times of the afterimage removal process performed on the Blue light emitting element so far, the time that has been performed so far from the immediately preceding afterimage removal process performed on the Blue light emitting element, The gain value corresponding to each of the first level, the second level and the third level can be determined in consideration of the applied gain value and the like. The gain values corresponding to the first level, the second level and the third level may be different each time the type of the light emitting element and the afterimage removal process are performed.

If the user selects one of the first menu 541, the second menu 542 and the third menu 543 and selects the preview menu 544, the control unit 180 displays the menu corresponding to the selected menu The brightness level of the first light emitting device corresponding to the peripheral region can be adjusted using the gain value and a preview screen including the adjustment result can be output to the display unit 151. [ The user determines whether to finally select one of the first menu 541, the second menu 542 and the third menu 543 in consideration of the degree and absence of the afterimage T displayed on the preview screen . If the user selects one of the first menu 541, the second menu 542 and the third menu 543 and selects the confirmation menu 545, the controller 180 determines whether the gain corresponding to the selected menu May be mapped to the first light emitting device corresponding to the peripheral region and stored in the memory 230. [

According to the embodiment, when the second menu 542 or the third menu 543 is selected through the second GUI 540, the control unit 180 instructs the user to select the second menu 542 or the third menu 543 of the display unit 240 corresponding to the after- A warning message (or warning message) indicating that the screen may appear dark may also be displayed.

Similarly to the above description with reference to Figs. 17 to 20, the user can also carry out the afterimage removal process for the light emitting element corresponding to other wavelength ranges, and a detailed description thereof will be omitted.

21 is a flowchart for explaining another example of a method of removing a residual image in a display device according to an embodiment of the present invention. In Fig. 21, the first display device is a device subject to afterimage removal, the second display device includes a camera as a device used for afterimage removal of the first display device, and is capable of interlocking with the first display device For example, a paired or wireless communication device).

An application for afterimage removal is executed in the first display device (S601). An execution screen of an application for afterimage removal can be displayed on the display unit of the first display device. According to the embodiment, the application for the afterimage removal of the external device in the second display device is executed first, and thereafter, the application for the afterimage removal may be executed in the first display device according to the predetermined condition thereafter. The latter case will be described in more detail with reference to FIG. 25 to FIG.

In the first display device, the first screen is displayed (S602). The first screen may be a screen corresponding to the first wavelength region among lights of various wavelength regions emitted from the display unit of the first display device. For example, the first display device may include at least one of a blue light emitting device, a Red light emitting device, and a Green light emitting device, and may include at least one of a blue light emitting device, a Red light emitting device, and a Green light emitting device, . The afterimage removal process according to an embodiment of the present invention may be performed in a predetermined sequence for each R / G / B / W light emitting device provided in the display unit of the first display device, / G / B / W light emitting device. For example, when the afterimage generated by the blue light emitting device is to be removed, the first display device deactivates the light emitting devices emitting light in other wavelength regions, .

According to the embodiment, when the predetermined signal transmitted from the second display device connected to the wireless communication is sensed, the first display device may execute the application for the afterimage removal and output the first screen to the display unit .

The second display device activates the camera and acquires the first image using the camera (S603). In this case, the first display device may output a guidance message to the display unit to shoot the first screen using the camera of the second display device and to transmit the shot image to the first display device.

For example, when an application for after image removal is executed first in the first display device, the first display device discovers a device capable of connecting to the wireless communication, ) Or a first signal for connecting a wireless communication for image retention to a device (second display device) selected by the user among the devices identified by the discovery. The second display device can receive the first signal, execute a residual image removal application in response to the first signal, activate the camera, and display the preview image acquired by the camera on the display unit have.

In another example, if an application for image afterglow is first executed in the second display device, the second display device discovers a device capable of connecting to the wireless communication, and the device connected to the past connected device (first display device) or And may transmit a second signal for connecting a wireless communication for the afterimage removal to the device (first display device) selected by the user among the devices identified by the discovery. The first display device may execute a residual image removal application in response to the second signal and output the first screen to the display unit. Then, the second display device can activate the camera and display the preview image acquired by the camera on the display unit.

According to the embodiment, when outputting the preview image, the second display device may output a guidance message to the display unit to shoot the first screen output to the first display device.

On the other hand, the first image may be an image including the first screen of the first display device obtained by the camera of the second display device.

The second display device transmits information related to the first image acquired by the camera to the first display device (S604).

In one example, the second display device outputs a first image to the display unit, detects a first signal for selecting a residual image area in the output first image, and detects information about a residual image area selected by the first signal May be included in the information related to the first image and transmitted to the first display device.

In another example, the second display device senses a second signal that outputs a first image to the display, selects a logo and / or indicator associated with the afterimage contained in the output first image, Or information about the indicator and / or indicator selected by the first display device may be included in the information related to the first image and transmitted to the first display device.

In yet another example, the second display device may detect an area having a brightness of less than a predetermined degree in the first image, and calculate brightness data of the detected area, brightness data of the detected area At least one of the position data and the shape data of the detected area in the first image may be included in the information related to the first image and transmitted to the first display device.

According to the embodiment, a combination example of the three examples described above is also possible.

The information associated with the first image may include image data of an image corresponding to the first image acquired by the camera of the second display device, a region estimated as a residual image in the first image (e.g., (For example, the selected area or the detected area) estimated in the first image, an area estimated as a residual image in the first image (for example, The brightness data of the selected region or the detected region), data related to the logo of the specific channel, and data related to the specific indicator.

In addition, according to the embodiment, when it is possible to process predetermined image data in the first display device, the first display device itself is output to the first display device and is self-captured by the first display device to obtain the first image May be possible.

The first display device may receive the information associated with the first image from the second display device and may detect the after image area on the first screen based on the information associated with the received first image (S605). The first display device detects a first area corresponding to the first screen in the first image based on the image data of the first image included in the information related to the first image, It is possible to detect a second area estimated as a residual image and detect a residual area on the first screen based on the position of the second area in the first area (for example, relative position information). At this time, the first display device displays the position data of the area (for example, the selected area or the detected area) estimated as a residual image in the first image included in the information related to the first image, At least one of the shape data of the region estimated to be in the first image, the luminance data of the region estimated as a residual image in the first image, the data related to the logo of the specific channel, and the data related to the specific indicator.

Then, the first display device adjusts the brightness of the display unit corresponding to the peripheral area of the detected after-image area (S606). That is, the first display device can adjust the brightness of the first light emitting device corresponding to the peripheral area of the detected afterimage area.

In one example, the first display device displays the brightness of the display portion corresponding to the detected afterimage area in the first image and the brightness of the afterimage area corresponding to the detected afterimage area, based on the image data of the first image included in the information related to the first image. The brightness of the display portion corresponding to the peripheral region of the afterimage region can be adjusted so that the difference between the brightness corresponding to the afterimage region and the brightness of the surrounding region is reduced.

In another example, the first display device may reduce the difference between the luminance of the detected after-image area and the luminance of the surrounding area based on the luminance data of the area estimated as the afterimage included in the information associated with the first image The luminance of the display unit corresponding to the peripheral area of the detected after-image area can be adjusted.

The first display device may store in the memory a gain value used for adjusting the luminance of the display unit corresponding to the peripheral region.

Thereafter, the first display device may again output the first screen in which the first light emitting element corresponding to the first wavelength region is activated, to the display unit again. The user can confirm whether there is a residual image on the re-output first screen, and perform the residual image removal process for the first light emitting element again by performing the steps S603 to S604 again if it remains. If there is no afterimage on the re-output first screen, the user can end the afterimage removal application or proceed with the afterimage removal process for the light emitting element corresponding to the different wavelength region.

22 to 44, an example of the afterimage-removing method described above with reference to Fig. 21 is described in the case where the first display device is the multimedia device 200 and the second display device is the mobile terminal 100 This will be described in detail.

22 and 23 are diagrams for explaining an example of a method of executing a residual image removal application in a multimedia device according to an embodiment of the present invention.

The control unit 270 of the multimedia device 200 outputs the GUI 700 as shown in FIG. 22 to the display unit 240 when a signal for executing the configuration menu of the multimedia device 200 is sensed can do. In one example, the signal may be received from a remote controller, or when a specific button on the exterior of the multimedia device 200 is selected.

The GUI 700 may include a menu list for setting preferences related to a predetermined function of the multimedia device 200. [ For example, when the GUI 700 is displayed in response to the signal, the GUI 700 displays a first menu list 710 for setting functions related to afterimage prevention / video / sound / network, etc. of the multimedia device 200 ). When the afterimage prevention menu 711 in the first menu list 710 is selected, the control unit 270 removes the afterimage generated on the display unit 240 or prevents the afterimage from occurring on the display unit 240 And a second menu list 720 for displaying the second menu list 720 may be included in the GUI 700 and displayed. In one example, the second menu list 720 may be located on the right side of the first menu list 710 in the GUI 700.

For example, when a signal for selecting an application menu 721 for the afterimage removal is detected in the second menu list 720, the control unit 270 can execute an application for afterimage removal.

If a signal for selecting an application menu 721 for the afterimage removal is detected in the second menu list 720, the control unit 270 displays a third menu list 730 ) May be included in the GUI 700 and displayed. For example, the third menu list 730 may include a menu 731 for removing a residual image according to manual selection of the user in the multimedia device 200 itself, and an external device connected to the multimedia device 200 And a menu 732 for removing the afterimage. According to the embodiment, the third menu list 730 may further include a menu 733 for setting a notification for the afterimage removal to the user. The control unit 270 executes an application for the afterimage removal and displays an execution screen related to the menu on the display unit 730. [ (240).

On the other hand, when a signal for selecting the menu 733 in the third menu list 730 is sensed, the control unit 270 displays a fourth menu list for setting a notification for after- (740) within the GUI (700). For example, the fourth menu list 740 includes a menu 741 for providing a notification to the user every predetermined time based on the actual viewing time of the multimedia device 200, And a menu 742 for notifying the user whenever the predetermined period elapses based on the elapsed time since the afterimage was removed. When a signal for selecting the menu 741 in the fourth menu list 720 is detected, the control unit 270 sets a notification to the user to remove the afterimage every time the predetermined viewing time elapses, When a signal for selecting the image blur suppression unit 742 is detected, the user can be notified of the image blur removal every time a predetermined period elapses since the last image blurring is performed. Each of the menus 741 and 742 includes editing icons 741a and 742b and the user can edit the time or date as a basis of the notification period by selecting the respective editing icons 741a and 742b.

24 is a diagram for explaining an example in which a residual image removal application is executed in a multimedia device as an example of a first display device according to an embodiment of the present invention.

In the present embodiment, it is assumed that the afterimage removal process proceeds with respect to the first light emitting device (for example, the Blue light emitting device) corresponding to the first wavelength region. However, as described above with reference to Fig. 7, (For example, R / G / B / W light emitting devices) corresponding to a predetermined wavelength range included in the display unit 240 are subjected to a residual image removal process or included in the display unit 240 (For example, R / G / B / W light emitting elements) corresponding to the predetermined wavelength region in which the image is removed.

The control unit 270 of the multimedia device 200 executes the afterimage removal application and outputs the first screen 810 to the display unit 240. [ Of course, the screen 410 as described above with reference to FIG. 7 may be output to the display unit 240 before the first screen 810. In the first screen 810, the first light emitting device corresponding to the first wavelength range included in the display unit 240 is activated and the light emitting devices corresponding to the other wavelength range included in the display unit 240 are deactivated Screen. In this embodiment, it is assumed that a residual image S called "LOGO " appears on the first screen 810.

For example, when an instruction to execute the afterimage removal application is detected, the control unit 270 can execute the afterimage removal application and output the first screen 810 to the display unit 240. In this case, the control unit 270 searches for an external device capable of performing wireless communication with the multimedia device 200 and transmits the search result to the user of the device having the history (e.g., the mobile terminal 100) To the device (mobile terminal 100) selected by the user. The control unit 270 may display the first screen 810 using the mobile terminal 100 interlocked with the multimedia device 200 and send a guidance message to the multimedia device 200 to transmit the captured image to the multimedia device 200. [ (811) to the display unit (240). According to an embodiment of the present invention, when the first signal is received from the multimedia device 200, the control unit 180 of the mobile terminal 100 automatically executes an application for removing a residual image installed in the mobile terminal 100 It is possible.

In another example, when the second signal for connecting the wireless communication for the afterimage removal is received from the external device (the mobile terminal 100), the control unit 270 executes the afterimage removal application and displays the first screen 810, May be output to the display unit 240. The control unit 270 may control the network interface unit 213 to connect wireless communication with the mobile terminal 100 in response to the second signal. The control unit 270 photographs the first screen 810 using the mobile terminal 100 interlocked with the multimedia device 200 and displays a guide message 811 to transmit the captured image to the multimedia device 200 May be output to the display unit 240.

25 is a view for explaining an example of a case where a residual image removal application is executed in a mobile terminal as an example of a second display device according to an embodiment of the present invention.

According to an embodiment of the present invention, an application for removing afterimage may be installed in the mobile terminal 100. When the mobile terminal 100 is the first display device to be subjected to the afterimage removal, the user can remove the afterimage formed on the display unit 151 of the mobile terminal 100 using the application for removing the afterimage, If the mobile terminal 100 is the second display device used for the afterimage removal of the first display device, the user can remove the afterimage of the first display device using the application for afterimage removal.

An icon 900 of an application for afterimage removal is displayed on a menu screen in which icons of the home screen of the mobile terminal 100 or the applications installed in the mobile terminal 100 are listed. The user can execute an application for image retention by selecting the icon 900 in the screen of the mobile terminal 100. [

According to an embodiment of the present invention, when an application for the afterimage removal is first executed in the multimedia device 200 and accordingly a first signal for connecting the wireless communication is transmitted from the multimedia device 200 to the mobile terminal 100, The control unit 180 of the control unit 100 may control the wireless communication unit 110 to connect wireless communication with the multimedia device 200 in response to the first signal and may automatically execute an application for image retention.

26 is a diagram for explaining an example of a screen displayed on the display unit when an application for removing afterimage is executed in a mobile terminal according to an embodiment of the present invention.

The control unit 180 of the mobile terminal 100 can output the execution screen 1000 as shown in Fig. 26 to the display unit 151 when the application for the afterimage removal is executed. According to the embodiment, the execution screen 1000 may not be output. Particularly, when the screen 410 shown in FIG. 7 is output from the multimedia device 200, the output of the execution screen 1000 is displayed in the mobile terminal 100 May be omitted.

The execution screen 1000 may be a screen for selecting the type of light emitting device to perform the afterimage removal process in the multimedia device 200 to be subjected to the afterimage removal using the mobile terminal 100. [ Since the execution screen 100 is similar to the execution screen 410 described above with reference to FIG. 7, a detailed description thereof will be omitted.

When the execution screen 1000 is output to the display unit 151 after the wireless communication is established between the multimedia device 200 and the mobile terminal 100 according to an embodiment of the present invention, The control unit 180 of the mobile terminal 100 may transmit information related to the light emitting device included in the multimedia device 240 to the mobile terminal 100 based on the information related to the light emitting device transmitted from the multimedia device 200 , And the execution screen 1000 may be configured.

27 is a view for explaining an example of a screen displayed on the display unit when a residual image removal application is executed in a mobile terminal according to an embodiment of the present invention.

The control unit 180 of the mobile terminal 100 controls the wireless communication unit 110 to search for an external device capable of wireless communication connection when an application for image retention is executed. According to an embodiment, the controller 180 may output a notification message 1110 to the display unit 151 to notify the user that an external device capable of wireless communication connection is searched for the afterimage removal.

Search of an external device capable of wireless communication connection of the mobile terminal 100 may be performed when the icon 900 corresponding to the application for after image removal is selected as described above with reference to FIG. 25, And may be performed when the confirmation menu is selected after selecting the type of the light emitting device desired to remove the afterimage on the execution screen 1000 as described above. When the afterimage removal application is first executed in the multimedia device 200 and the application for image removal is executed in the mobile terminal 100 by a signal for wireless communication connection transmitted from the multimedia device 200 The output of the search and notification message 1110 of the external device capable of wireless communication connection may be omitted.

28 is a view for explaining an example of a screen displayed on a display unit when a residual image removal application is executed in a mobile terminal according to an embodiment of the present invention.

The control unit 180 of the mobile terminal 100 controls the wireless communication unit 110 to connect the wireless communication with the specific external device when the application for the afterimage removal is executed. According to an embodiment, the control unit 180 may output a notification message 1120 to the display unit 151 to notify the user that wireless communication with a specific external device is connected.

When there is a specific external device having history connecting the mobile terminal 100 and the mobile terminal 100, the control unit 180 determines whether the user selects a specific external device among the detected external devices Or when a signal for a wireless communication connection to be transmitted from a specific external device is sensed, a residual image removal application is executed first in a specific external device, and the wireless communication unit 110 can be controlled to connect wireless communication with the specific external device have.

29 is a diagram for explaining an example of a screen displayed on the display unit when a residual image removal application is executed in a mobile terminal according to an embodiment of the present invention.

The control unit 180 of the mobile terminal 100 activates the camera 121 and displays the preview image 1200 acquired by the camera 121 on the display unit 151 Can be output.

25, when the icon 900 corresponding to the application for afterimage removal is selected, the control unit 180 activates the camera 121 and displays the icon 121 acquired by the camera 121 And output the preview image 1200 to the display unit 151. [ Then, the process as described above with reference to Figs. 27 and 28 can be performed thereafter.

27 and 28, the control unit 180 activates the camera 121 and displays the preview image 1200 acquired by the camera 121 as the preview image 1200. [ And output it to the display unit 151.

According to the embodiment, the control unit 180 activates the camera 121 by a user command for selecting an icon corresponding to the in-screen camera 121 of the mobile terminal 100 without selecting an application for afterimage removal It is possible.

The user can adjust the position of the mobile terminal 100 so that the display unit 240 of the multimedia device 200 is positioned within the preview image 1200 and then select the shooting menu 1210 to obtain the first image . The obtained first image may be transmitted to the multimedia device 200 and used to detect the afterimage area included in the display unit 240 of the multimedia device 200. It is preferable that the display portion 240 of the multimedia device 200 is located in the first image without distortion so that the afterimage area is accurately detected so as to coincide with the actual afterimage S. For this purpose, a guidance message for guiding the correct photographing method of the first screen 810 may be output to the display unit 151 of the mobile terminal 100. This will be described with reference to FIG.

30 is a view for explaining an example of a guidance message output to the display unit of the mobile terminal according to an embodiment of the present invention.

The control unit 180 of the mobile terminal 100 displays a guide message 1220 for guiding the correct photographing method of the first screen 810 displayed on the display unit 240 of the multimedia device 200 to the display unit 151 as shown in FIG. The guidance message 1220 may be displayed on the preview image 1200 of FIG. 29 or displayed before the preview image 1200 is output.

31 is a view for explaining an example of a screen displayed on a display unit of a multimedia device to be subjected to afterimage removal when an application for afterimage removal is executed in a mobile terminal according to an embodiment of the present invention.

The control unit 180 of the mobile terminal 100 connects a signal for connecting the wireless communication with a specific external device (i.e., the multimedia device 200) to the multimedia device 200 The wireless communication unit 110 can be controlled. The particular external device may be a history-based device that has connected wireless communication with the mobile terminal 100, as described above with respect to FIG. 29, or may be selected by a user of the external devices retrieved as described above with respect to FIG. Device.

The control unit 270 of the multimedia device 200 controls the network interface unit 213 to connect the wireless communication with the mobile terminal 100 in response to a signal for wireless communication connection transmitted from the mobile terminal 100, And may output the first screen 810 to the display unit 240.

The first screen 810 may be a screen on which a light emitting element corresponding to a certain wavelength region of the light emitting elements included in the display unit 240 is activated. According to the embodiment, the type of the light emitting device to be subjected to the afterimage removal process is selected by the user as described above with reference to FIG. 26, and information related to the selected light emitting device is transmitted from the mobile terminal 100 to the multimedia device 200. [ The controller 270 of the multimedia device 200 determines whether the light emitting device corresponding to the predetermined wavelength region among the light emitting devices included in the display unit 240 is activated And may output the first screen 810 to the display unit 240.

32 to 38, examples of a process of capturing a screen of the multimedia device 200 using the mobile terminal 100 and transmitting the captured image to the multimedia device 200 will be described in detail .

32 is a view for explaining an example of a screen displayed on a display unit of a mobile terminal when a screen of the multimedia device is shot using the mobile terminal according to an embodiment of the present invention.

29, the user adjusts the position of the mobile terminal 100 so that the display unit 240 of the multimedia device 200 is located in the preview image 1200, and then displays the shooting menu 1210 By selection, a first image 1300 can be obtained.

Referring to FIG. 32, the control unit 180 of the mobile terminal 100 may output the obtained first image 1300 to the display unit 151. FIG.

According to an embodiment, the control unit 180 may detect an area corresponding to the display unit 240 of the multimedia device 200 in the first image 1300. For example, the control unit 180 may use the contour detection algorithm stored in the memory 170 to correspond to the display unit of the display device to be subjected to the afterimage removal from the image obtained through the camera 121 Can be detected.

The control unit 180 detects an area corresponding to the display unit 151 of the multimedia device 200 in the first image 1300 and displays an indicator 1311 indicating the detected area on the display unit 151 As shown in Fig. The user can adjust the size of the indicator 1311 by touching and dragging an arbitrary point of the indicator 1311 inward or outward or by touching and dragging an arbitrary point of the indicator 1311 1311 may be adjusted. When the area detected by the control unit 180 does not coincide with the area corresponding to the display unit 151 of the multimedia device 200 included in the first image 1300, May correspond to an area corresponding to the display unit 151 of the multimedia device 200 included in the first image 1300. [

Alternatively, according to the embodiment, the control unit 180 may display the indicator 1311 in the first image 1300 without detaching the area corresponding to the display unit 240 of the multimedia device 200 1300 to display a predetermined area on the display unit 151. The user then touches an arbitrary point of the indicator 1311 so that the indicator 1311 coincides with the area corresponding to the display unit 151 of the multimedia device 200 included in the first image 1300. [ The position of the indicator 1311 can be adjusted by adjusting the size of the indicator 1311 by dragging inward or outward, or by touching and dragging an arbitrary point of the indicator 1311.

The control unit 180 may store or temporarily store information on the area corresponding to the display unit 240 of the multimedia device 200 in the first image 1300 in the memory 170. [

The control unit 180 controls the display unit 1300 of the multimedia device 200 in the first image 1300 to transmit information related to the first image 1300 to the multimedia device 200, It is possible to improve the accuracy in removing the afterimage in the multimedia device 200 by transmitting the information on the area corresponding to the area 240 to the multimedia device 200. [

Alternatively, according to the embodiment, the controller 180 may output only the area finally selected by the indicator 1311 in the first image 1300 to the display unit 151, 1 multimedia device 200 by transmitting information associated with the region finally selected by the indicator 1311 in the first image 1300 to the multimedia device 200 when transmitting information associated with the image 1300 to the multimedia device 200. [ 200 may contribute to improving accuracy in removing the afterimage.

Meanwhile, according to an embodiment of the present invention, the user may directly select the afterimage area in the obtained first image 1300. This will be described with reference to FIGS. 33 and 34. FIG.

33 is a view for explaining an example of a screen displayed on the display unit of the mobile terminal according to the embodiment of the present invention.

The control unit 180 of the mobile terminal 100 may output the first image 1300 acquired by the camera 121 to the display unit 151. [ The first image 1300 may be a first image 610 captured by the camera 121 and displayed on the display unit 240 of the multimedia device 200 as described above, May be the area finally selected by the indicator 1311 from the first image 1300 obtained by the camera 121 as described above with respect to FIG.

The first image 1300 obtained by the camera 121 may be transmitted to the multimedia device 200 and used to remove the afterimage of the display portion 240 of the multimedia device 200. [ In this case, the user may directly select the afterimage area in the first image 1300 before the first image 1300 is transmitted from the mobile terminal 100 to the multimedia device 200. [

According to the embodiment, the control unit 180 may output the guidance message 1400 to the display unit 151 to select the afterimage area from the photographed image. The guidance message 1400 may be output on the first image 1300.

34 is a diagram for explaining an example of a method for the user to select a residual image area in the mobile terminal according to an embodiment of the present invention.

When the confirmation menu 1410 in the guidance message 1400 described above with reference to FIG. 33 is selected, the screen shown in FIG. 34 may be output to the display unit 151. FIG.

The control unit 180 of the mobile terminal 100 may output the first image 1300 to the display unit 151 and sense a signal (user command) for selecting the afterimage area in the first image 1300 . For example, the user command may be a touch input received through the touch screen 151.

If the size of the afterimage S included in the first image 1300 is small and it is difficult to select the afterimage area, the user enlarges the size of the first image 1300 by enlarging the size of the afterimage area 1300, . The selection of the afterimage area by the touch input is similar to that described above with reference to Fig. 17, and thus a detailed description thereof will be omitted.

When the selection of the after-image area is completed, the controller 180 may store or temporarily store the information about the selected after-image area in the memory 170. [

Meanwhile, according to an embodiment of the present invention, the controller 180 of the mobile terminal 100 may analyze the obtained first image 1300 to detect the afterimage area. This will be described with reference to Figs. 35 and 36. Fig.

35 is a view for explaining an example of a method of selecting a residual image area in a mobile terminal according to an embodiment of the present invention.

The control unit 180 of the mobile terminal 100 may output the first image 1300 acquired by the camera 121 to the display unit 151. [ The first image 1300 may be a first image 610 captured by the camera 121 and displayed on the display unit 240 of the multimedia device 200 as described above, May be the area finally selected by the indicator 1311 from the first image 1300 obtained by the camera 121 as described above with respect to FIG.

The first image 1300 obtained by the camera 121 may be transmitted to the multimedia device 200 and used to remove the afterimage of the display portion 240 of the multimedia device 200. [ In this case, before the first image 1300 is transmitted from the mobile terminal 100 to the multimedia device 200, the controller 180 may detect the afterimage area included in the first image 1300. That is, the control unit 180 may detect an area estimated as a residual image S in the first image 1300. [

According to the embodiment, the control unit 180 may not detect the afterimage area if the user directly selects the afterimage area in the first image 1300 as described above with reference to Fig. 34, Even if the afterimage area is directly selected in the image 1300, the afterimage area may be detected to increase the accuracy of the afterimage removal, or the afterimage area may be detected regardless of whether the user directly selected the afterimage area in the first image 1300 It is possible. Alternatively, in accordance with the embodiment, the control unit 180 may be configured to, if the user directly selects the afterimage area in the first image 1300, as described above with reference to Figure 34, based on the information about the afterimage area selected by the user The afterimage area may be detected in the first image 1300. [

In one example, the control unit 180 analyzes the luminance of the first image 1300 and detects a first region having a luminance lower than a preset degree in the first image 1300, And the peripheral area of the first area is greater than or equal to a predetermined level, the first area may be detected as the after-image area. The control unit 180 may store or temporarily store information on the first area in the memory 170. [ For example, the information on the first area may include at least one of brightness data of the first area, position data where the first area is located within the first image 1300, and shape data of the first area have.

According to an embodiment, the control unit 180 may detect a residual image area in the first image 1300, and then output a guidance message for allowing the user to confirm the detected residual image area. This will be described with reference to FIG.

36 is a view for explaining an example of a screen displayed on the display unit of the mobile terminal according to the embodiment of the present invention.

The control unit 180 detects the afterimage area in the first image 1300 as described above with reference to Fig. 35 and displays a guidance message 1600 for allowing the user to confirm the detected afterimage area, (151). According to an embodiment, the control unit 180 may output contours, arrows, and / or indicators representing the detected afterimage area on the first image 1300.

In one example, the user can directly modify at least a portion of the afterimage area detected by the control unit 180 by selecting the modification menu 1610 in the guidance message 1600. [ In another example, the user may cause the control unit 180 to again detect the afterimage area in the first image 1300 by selecting the redetection menu 1620 in the guidance message 1600. [

According to the embodiment, the controller 180 may output information on characters, diagrams, icons, logos, indicators, etc. corresponding to the detected afterimage area in the guide message 1600. For example, the control unit 180 may output a guidance message 1600 including a phrase such as 'Is the detected afterimage LOGO correct?'.

Meanwhile, according to an embodiment of the present invention, the control unit 180 of the mobile terminal 100 may allow the user to select a logo or indicator related to the afterimage. This will be described with reference to FIG.

37 is a view for explaining an example of a screen displayed on the display unit of the mobile terminal according to the embodiment of the present invention.

The control unit 180 of the mobile terminal 100 may output a GUI to the display unit 151 so that the user can select the logo / indicator related to the afterimage. In this embodiment, as an example, a GUI 1700 is shown which allows the user to select a logo associated with the afterimage. The GUI for selecting an indicator related to the afterimage is similar to that described above with reference to FIG. 18, so a description thereof will be omitted.

The memory 170 may store logo related information related to a logo of a predetermined channel, a logo of a program transmitted through each channel, and the like. Here, the logo-related information may include at least one of first information on the type of the logo and second information related to a position on which the logo is displayed on the screen. The description of the logo-related information is similar to that described above with reference to FIG. 17, so a detailed description thereof will be omitted.

When a specific logo is selected through the GUI 1700, the control unit 180 may store or temporarily store information related to the selected logo in the memory 170. [

The control unit 180 may output the GUI 1700 after the user selects the afterimage area in the first image 1300 as described above with reference to Figs. 33 and 34, The user may output the GUI 1700 before the user selects the afterimage area in the first image 1300 and the user may output the GUI 1700 before the first image 1200 or the first image 1300 is acquired, And may output the GUI 1700 after detecting the afterimage area in the first image 1300 as described above with reference to Figures 35 and 36, The GUI 1700 may be output before the after image area is detected in the first image 1300 as described above with reference to FIG. The control unit 180 may more accurately detect the afterimage area in the first image 1300 based on the information associated with the logo selected via the GUI 1700. [

According to an embodiment, when transmitting information related to the first image 1300 to the multimedia device 200, as described below in conjunction with FIG. 38, the control 180 may be associated with the logo selected via the GUI 1700 Information may be sent to the multimedia device 200 to contribute to improving accuracy in removing the afterimage in the multimedia device 200. [

38 is a view for explaining an example of a method of transmitting information related to an image to a multimedia device in a mobile terminal according to an embodiment of the present invention.

The control unit 180 of the mobile terminal 100 may control the wireless communication unit 110 to transmit information related to the first image 1300 acquired by the camera 121 to the multimedia device 200. [ Here, the information related to the first image 1300 includes image data of the first image 1300 obtained by the camera 121, an area estimated as a residual image in the first image (for example, (E.g., a region detected by the control unit 180 and / or a region selected by the user) that is estimated as a residual image in the first image (For example, the area detected by the control unit 180 and / or the area selected by the user), the data related to the logo of the specific channel, and the like, And data associated with a particular indicator.

The control unit 180 may output a guidance message 1800 to the display unit 151 to confirm whether the first image 1300 is to be transmitted to the multimedia device 200. [ The guidance message 1800 may be output after the first image 1300 is acquired or may be output after the afterimage area in the first image 1300 is selected by the user and may be output by the control unit 1800 May be output after the afterimage area in one image 1300 is detected or may be output after the logo / indicator related to the afterimage is selected by the user. The guidance message 1800 may be output on the first image 1300.

When the user selects the confirmation menu 1810 of the guidance message 1800, the control unit 180 controls the wireless communication unit 110 to transmit the information related to the first image 1300 to the multimedia device 200 .

The multimedia device 200 may remove the afterimage included in the first screen 810 based on the information related to the first image 1300 transmitted from the mobile terminal 100. [ This will be described with reference to FIG. 39 and FIG.

FIG. 39 is a view for explaining an example of a screen displayed on the display unit of the multimedia device according to the embodiment of the present invention.

The control unit 270 of the multimedia device 200 controls the network interface unit 213 to receive information related to the first image 1300 transmitted from the mobile terminal 100. [

The control unit 270 may output the first image 1300 to the display unit 240 based on the information related to the received first image 1300. [ For example, the control unit 270 may determine whether the information related to the received first image 1300 includes a region estimated as a residual image in the first image (for example, an area detected by the control unit 180 and / (E.g., a region selected by the control section 180 and / or a region selected by the user) estimated as a residual image in the first image, At least one of luminance data of a region estimated to be a residual image (for example, an area detected by the control unit 180 and / or an area selected by the user), data related to a logo of a specific channel, and data related to a specific indicator If not, the first image 1300 may be output to the display unit 240, allowing the user to select the afterimage area in the first image 1300. [ The method of selecting the afterimage area in the first image 1300 using the remote controller is similar to that described above with reference to Figs. 8 to 11, and thus a detailed description thereof will be omitted. In addition, according to the embodiment, the control unit 270 may output the GUI 440 as described above with reference to FIG. 12 to the display unit 240, and a detailed description thereof will be omitted.

According to the embodiment, the control unit 270 may output the guidance message 1900 to the display unit 240 to select the afterimage area using the remote controller.

FIG. 40 is a view for explaining an example of a method of removing a residual image in a multimedia device according to an embodiment of the present invention.

The control unit 270 of the multimedia media device 200 may detect the afterimage area on the first screen 810 based on the information related to the received first image 1300. [

For example, the control unit 270 can detect the afterimage area on the first screen 810 based on the afterimage area selected by the user as described above with reference to Fig.

In another example, the control unit 270 determines a region estimated as a residual image in the first image (for example, an area detected by the control unit 180) and a region estimated as a residual image included in the information related to the received first image 1300 (E.g., a region selected by the control section 180 and / or a region selected by the user) estimated as a residual image in the first image, Brightness data of a region estimated to be a residual image in one image (e.g., an area detected by the control unit 180 and / or an area selected by the user), data related to a logo of a specific channel, and data related to a specific indicator Based on at least one, the afterimage area can be detected on the first screen 810.

The controller 270 can adjust the brightness of the display unit 240 corresponding to the peripheral area of the detected after-image area. For example, the control unit 270 can reduce the afterimage S recognized by the user's eyes by reducing the brightness of the light emitting device corresponding to the peripheral area of the detected after-image area.

For example, the control unit 270 can adjust the brightness of the display unit 240 using the GUI as described above with reference to FIGS.

In another example, based on the image data of the first image 1300 included in the information associated with the first image 1300, the brightness of the detected after-image area on the first screen 810 and the brightness of the surrounding area of the after- The luminance of the display unit 240 corresponding to the peripheral area of the detected after-image area is automatically adjusted so that the difference between the luminance of the detected after-image area and the luminance of the surrounding area is reduced have.

As another example, an area (for example, a region detected by the control unit 180 and / or a region selected by the user) estimated as a residual image in the first image included in the information related to the first image 1300, (For example, the area detected by the control unit 180 and / or the area selected by the user) estimated as the afterimage in the first image, the area estimated as the afterimage in the first image Based on at least one of brightness data of a specific channel (for example, an area detected by the control unit 180 and / or an area selected by the user), data related to a logo of a specific channel, and data associated with a specific indicator, The luminance of the display unit 240 corresponding to the peripheral area of the deteriorated afterimage area can be automatically adjusted so that the difference between the luminance of the tinted residual image area and the luminance of the surrounding area is reduced .

41 is a view for explaining an example of a screen displayed on the display unit after the first residual image removal process is performed in the multimedia device according to the embodiment of the present invention.

The controller 270 of the multimedia device 200 controls the brightness of the display unit 240 corresponding to the peripheral area of the detected after-image area to be adjusted so that the first screen 810 in which the first light- And output it to the display unit 240 again. The residual image S may not be seen on the first screen 810 that has been output again, and the afterimage S that remains somewhat blurred may be seen if the afterimage removal is not completely performed.

According to the embodiment, the control unit 270 may output a guidance message 2100 to the display unit 240 to guide the process after the first image retention process for the first light emitting device is completed. For example, the guidance message 2100 may include a first menu 2110 for performing a second afterimage removal process for a first light emitting device (e.g., a Blue light emitting device), another light emitting device (e.g., A second menu 2120 for performing a second afterimage removal process on a green light emitting element), and a third menu 2130 for terminating an application for afterimage removal.

If the user selects the first menu 2110 in the guidance message 2100, at least a part of the process as described above with reference to Figures 22 to 40 may be performed again. According to the embodiment, when the afterimage area of the first screen 810 is detected in the second afterimage removal process for the first light emitting device, the control unit 270 displays the first screen 810 ) Can be referred to. Also in determining the gain value used for the luminance control of the display unit 240 corresponding to the peripheral area of the afterimage area of the first screen 810 in the second afterimage removal process for the first light emitting device, The gain value used for adjusting the luminance of the display unit 240 corresponding to the peripheral area of the afterimage area of the first screen 810 of the afterimage removal process can be referred to.

If the user selects the second menu 2120 in the guidance message 2100, at least a part of the process as described above with reference to Figures 22 to 40 for the second luminous means can similarly be performed. Explanations thereof are similar to those described above with reference to FIGS. 22 to 40 except that the second light emitting device is used instead of the first light emitting device, and thus a detailed description thereof will be omitted.

If the user selects the third menu 2130 in the guidance message 2100, the control unit 270 can terminate the application for the afterimage removal.

Hereinafter, an example of a residual image removal process for the second light emitting device included in the display unit 240 of the multimedia device 200 will be described with reference to FIGS. 42 to 44. FIG. A detailed description of the contents overlapping with those described above with reference to Figs. 21 to 41 will be omitted.

42 is a view for explaining an example of a screen displayed on the display unit of the multimedia device according to the embodiment of the present invention.

For example, when the user selects the Green light emitting element on the execution screen 410 of the application for the afterimage removal described above with reference to FIG. 7, or the execution screen 1000 of the application for afterimage removal described above with reference to FIG. 26, When the user selects the Green light emitting element or the execution of the afterimage removing process for the Blue light emitting element is completed as described above with reference to FIGS. 22 to 40, the second screen 2200 as shown in FIG. 42 And may be output to the display unit 240.

The control unit 270 activates the second light emitting device (Green light emitting device) among the light emitting devices included in the display unit 240 and displays the second screen 2200 in which the other light emitting devices are inactivated, . In this embodiment, it is assumed that a residual image S called "LOGO " appears on the second screen 2200.

According to the embodiment, the controller 270 photographs the second screen 2200 using the mobile terminal 100 interlocked with the multimedia device 200, and transmits the photographed image to the multimedia device 200 And outputs the message 2210 to the display unit 240.

43 is a view for explaining an example of a screen displayed on the display unit when a residual image removal application is executed in a mobile terminal according to an embodiment of the present invention.

The control unit 180 of the mobile terminal 100 can activate the camera 121 and output the preview image 1200 acquired by the camera 121 to the display unit 151. [ For example, when the second screen 2200 shown in FIG. 42 is output to the display unit 240, the controller 270 of the multimedia device 200 transmits a predetermined first signal to the network interface The control unit 180 of the mobile terminal 100 activates the camera 121 when the first signal is received through the wireless communication unit 110 And can output the preview image 1200 acquired by the camera 121 to the display unit 151. [ In another example, the control unit 180 of the mobile terminal 100 may be configured to control the camera 121, when information associated with the first image 1300 is transmitted to the multimedia device 200, And may output the preview image 1200 acquired by the camera 121 to the display unit 151. [

According to the embodiment, the control unit 180 may output a guidance message guiding the correct photographing method of the second screen 2200 to the display unit 151. [

Since the afterimage removal process for the second light emitting element thereafter is similar to that described above with reference to FIGS. 22 and 41, detailed description thereof will be omitted.

According to the embodiment, when it is possible to carry out the afterimage-removing process by the self-capture of the first display device, the first display device displays the R / G / B / W light- Capturing an activated screen, capturing a screen in which a light-emitting element selected by the user among the R / G / B / W light-emitting elements provided in the display unit is activated, analyzing the brightness of the captured screen, The removal process can proceed. In this case, since the subject acquiring the first image is the same as or similar to that described above with reference to Figs. 21 to 31 except that the subject is not the second display device but the first display device, A detailed description of the afterimage removal process by the above-described method will be omitted. In addition, when it is possible to carry out the afterimage-removing process by self-capturing of the first display device, the first display device may display a residual image for each kind of light- The removal process may be performed without a separate user instruction, or the application for removing the residual image may be automatically executed when a specific time reserved by the user is reached to perform a residual image removal process for each light emitting device. Also, when it is possible to carry out the afterimage removal process by self-capture of the first display device, such a afterimage removal process can be performed periodically, irregularly, Or may be performed in the background at a specified time.

44 is a view for explaining an example of a screen displayed on the display unit after the completion of the process of removing the afterimage of the multimedia device in the mobile terminal according to the embodiment of the present invention.

The control unit 180 of the mobile terminal 100 may control the display unit 240 of the multimedia device 200 such that the afterimage removal process for all the light emitting devices included in the display unit 240 of the multimedia device 200 is completed, When the afterimage removal process for the light emitting device of the type set by the user is completed among the included light emitting devices, the display unit 151 may output a guide message 2300 informing the end of the application for the afterimage removal.

The control unit 180 may terminate the application for the afterimage removal if a separate confirmation command by the user is detected or a predetermined time has elapsed since the guidance message 2300 was output.

According to the embodiment, when a predetermined confirmation command is detected by the user or a preset time has elapsed after the guidance message 2300 is output, the control unit 180 transmits a predetermined second signal to the multimedia device 200 (Not shown). When the second signal is detected through the network interface unit 213, the control unit 270 of the multimedia device 200 may automatically terminate the application for the afterimage removal without a user command.

45 to 48, when the first display device is the first mobile terminal 100A and the second display device is the second mobile terminal 100B, the afterimage removal described above with reference to Fig. An example of the method will be described in detail. Detailed descriptions of the contents overlapping with those described above with reference to Figs. 21 to 44 are omitted. 45 to 48 are almost similar to those described above with reference to Figs. 22 to 44, except that the first display device is the mobile terminal 100 rather than the multimedia device 200. Fig.

45 is a diagram illustrating an example of a screen displayed on the display unit of the first mobile terminal as an example of the first display device according to an embodiment of the present invention.

The control unit 180A of the first mobile terminal 100A can output the first screen 2400 to the display unit 151A when the application for the afterimage removal is executed. The first screen 2400 may be a screen in which the first light emitting device corresponding to the first wavelength region of the light emitting devices included in the display unit 151A is activated.

According to the embodiment, the control unit 180A displays a guidance message to photograph the first screen 2400 using the device interlocked with the first mobile terminal 100A and transmit the photographed image to the first mobile terminal 100A The display unit 151A may be output to the display unit 151A.

46 is a diagram illustrating an example of a screen displayed on a display unit of a second mobile terminal as an example of a second display device according to an embodiment of the present invention.

The control unit 180B of the second mobile terminal 100B transmits the wireless communication unit 110B to connect the wireless communication with the specific external device (i.e., the first mobile terminal 100A) Can be controlled. The specific external device may be a device having history connecting the second mobile terminal 100B and a device selected by the user from a search result of a device capable of wireless communication connection with the second mobile terminal 100B, .

According to the embodiment, the control unit 180B may output a notification message 2500 to the display unit 151B to notify the user that the wireless communication with the specific external device is connected.

47 is a diagram illustrating an example of a screen displayed on a display unit of a second mobile terminal according to an embodiment of the present invention.

The control unit 180B of the second mobile terminal 100B activates the camera 121B and displays the preview image 2600 obtained by the camera 121B on the display unit 151B As shown in Fig.

According to the embodiment, the control unit 180B displays a guidance message guiding the correct photographing method of the first screen 2400 output to the display unit 151A of the first mobile terminal 100A to the display unit 151B Output.

FIG. 48 is a view for explaining an example of a method for removing an afterimage in a first mobile terminal according to an embodiment of the present invention; FIG.

The control unit 180A of the first mobile terminal 100A can detect the afterimage area on the first screen 2400 based on the information related to the first image received from the second mobile terminal 100B. The method of detecting the afterimage area is similar to that described above with reference to FIG. 40, so a detailed description thereof will be omitted.

The control unit 180A can adjust the brightness of the display unit 151A corresponding to the peripheral area of the detected afterimage area. The brightness adjusting method is similar to that described above with reference to FIG. 40, so that detailed description thereof will be omitted.

According to at least one embodiment of the present invention, it is possible to provide a method for eliminating stuck-after images that can be perceived by the user on the screen of the display unit.

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

100: mobile terminal
200: Multimedia device

Claims (20)

A display unit; And
And a control unit,
Wherein,
The application for the afterimage removal is executed,
Controls the display unit to display a specific screen,
Detecting a residual image area on the specific screen,
And adjusts the luminance of the display portion corresponding to the peripheral region of the detected afterimage region. The method according to claim 1,
Wherein the control section senses a first signal for selecting at least a partial area on the specific screen and detaches the afterimage area based on the area selected by the first signal. The method according to claim 1,
And a memory for storing first information related to an indicator outputable on the display unit,
Wherein the first information includes at least one of information on the type of the indicator and information on the position at which the indicator is displayed on the screen of the display unit. The method of claim 3,
Wherein,
Controls the display unit to display a first GUI including an indicator of at least one of indicators associated with first information stored in the memory,
Detecting a second signal to select at least one of the indicators included in the first GUI,
And detects the afterimage area based on first information associated with the indicator selected by the second signal. The method according to claim 1,
Further comprising a memory for storing second information related to a logo of a viewable channel through the display device,
Wherein the second information includes at least one of information about a type of logo and information about a position at which a logo is displayed on a screen of the display unit. 6. The method of claim 5,
Wherein,
Controls the display unit to display a second GUI including a logo of at least one of the logos associated with the second information stored in the memory,
A third signal for selecting at least one of the logos included in the second GUI,
And detects the afterimage area based on second information related to the logo selected by the third signal. The method according to claim 1,
Wherein,
Controls the display unit to display a third GUI for adjusting the brightness of a display unit corresponding to a peripheral area of the afterimage area,
And adjusts the luminance of a display portion corresponding to a peripheral region of the afterimage region in accordance with a fourth signal received via the third GUI. 8. The method of claim 7,
The third GUI includes a menu icon for adjusting the brightness of the display unit corresponding to the peripheral area,
Wherein the fourth signal comprises at least one of a signal for selecting the menu icon at least once or a signal for moving the menu icon over a predetermined area of the third GUI. 8. The method of claim 7,
The third GUI may include a first menu for adjusting the brightness of the display unit corresponding to the peripheral region to a first level and a second menu for adjusting the brightness of the display unit corresponding to the peripheral region to a second level lower than the first level, 2 < / RTI > menu. The method according to claim 1,
Wherein the display unit includes at least a first light emitting element corresponding to the first wavelength region and a second light emitting element corresponding to the second wavelength region, The light emitting element is a screen on which the light emitting element is activated,
Wherein the control section adjusts the brightness of the first light emitting element corresponding to a peripheral region of the afterimage region. A network interface unit capable of wireless communication with an external device;
A display unit; And
And a control unit,
Wherein,
Controlling the network interface unit to connect wireless communication with a specific external device,
Executes an application for image retention according to predetermined conditions,
Controls the display unit to display a specific screen,
Controls the network interface unit to receive information related to an image corresponding to the specific screen from a specific external device to which the wireless communication is connected,
Detecting the after-image residual area on the basis of the information related to the received image,
And adjusts the luminance of the display portion corresponding to the peripheral region of the detected afterimage region. 12. The method of claim 11,
Wherein the information related to the image includes at least one of image data of an image corresponding to the specific screen acquired by the camera of the specific external device, position data of an area estimated as a residual image in the image, Data relating to a specific channel, data relating to a logo of a specific channel, and data relating to a specific indicator. The display device according to claim 1, wherein the display data includes at least one of data, shape data of a region estimated as an afterimage in the image, 12. The method of claim 11,
Preferably,
A condition under which a signal for executing the application for removing the afterimage is received from a remote controller or a condition in which a predetermined signal is received from the specific external device via the network interface unit. 12. The method of claim 11,
Wherein the control unit controls the display unit to output a guidance message to shoot the specific screen using the specific external device. 13. The method of claim 12,
When the luminance data of an area estimated as a residual image in the image is included in the information related to the image,
Wherein the control unit controls the brightness of the display unit corresponding to the peripheral area so that the difference between the luminance corresponding to the detected residual image area and the luminance of the display unit corresponding to the peripheral area is equal to or less than a predetermined level, / RTI > 12. The method of claim 11,
Wherein,
Controls the display unit to display a GUI for adjusting a luminance of a display unit corresponding to a peripheral area of the afterimage area,
And adjusts the luminance of a display portion corresponding to a peripheral region of the afterimage region in accordance with a first signal received via the GUI. A wireless communication unit capable of wireless communication with an external device;
camera;
A display unit; And
And a control unit,
Wherein,
An application for removing a residual image of an external device is executed,
Controlling the wireless communication unit to connect wireless communication with a specific external device,
Activating the camera,
When an imaging command is sensed, an image is acquired using the activated camera,
And controls the wireless communication unit to transmit information related to the acquired image to a specific external device to which the wireless communication is connected. 18. The method of claim 17,
Wherein the control unit outputs a guidance message to the display unit to shoot a screen of the specific external device when the camera is activated. 18. The method of claim 17,
Wherein the control unit detects an area having a luminance lower than a predetermined level in the image,
Wherein the information associated with the image comprises at least one of brightness data of the detected area in the image, position data of the detected area in the image, and shape data of the detected area in the image. device. 18. The method of claim 17,
The control unit outputs the obtained image to the display unit, detects a second signal for selecting a residual image area in the output image,
Wherein the information associated with the image comprises information about an area selected by the second signal.

Images