KR20180074405A - Electronic device and Method for controlling the electronic device thereof - Google Patents

Abstract

The present invention relates to an electronic device and a method for controlling the same. According to the present invention, the method for controlling an electronic device linked to a display device includes the following steps of: capturing a background image to be displayed on the display device; transmitting data about the captured background image to the display device; capturing an area including the display device for displaying the background image; comparing the display area for displaying the background image and an rest around area from the captured image and generating correction data about the background image; and transmitting the correction data to the display device.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electronic device and a control method thereof,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic apparatus and a control method thereof, and more particularly, to an electronic apparatus and a control method thereof for performing correction on an image displayed through a display apparatus.

In recent years, functions for providing various user experiences using a display device have been developed. Particularly, by obtaining a background image of the background of the wall surface on which the display device is installed and displaying the obtained background image through the display device, the user can be provided with a visual effect such that the display becomes a transparent window.

However, when the background image displayed on the screen of the display device is different from the background of the wall surface on which the display device is installed due to a change in ambient conditions (change in illumination) or a color temperature applied to a display device displaying the background image there is a problem.

Accordingly, there is a problem that the display effect of the display device is not maximized, such as a transparent window.

It is an object of the present invention to provide a visual effect such that a display of a display device becomes a transparent window.

According to another aspect of the present invention, there is provided a method of controlling an electronic device in association with a display device, the method comprising: capturing a background image to be displayed on the display device; The method of claim 1, further comprising the steps of: capturing an area including a display device for displaying the background image; comparing the display area where the background image is displayed with the remaining peripheral area from the captured image; Generating data and transmitting the correction data to the display device.

The generating may include comparing pixel values of the display area and the peripheral area, and generating correction values for matching pixel values of the display area with pixel values of the peripheral area. have.

The comparison may include comparing a pixel value of at least one pixel included in a predetermined first region of the display region with a pixel value of at least one pixel included in a predetermined second region of the peripheral region, have.

The generating may further include correcting the background image based on the correction value, and generating data for the corrected background image.

The display device stores and displays a background image photographed from the electronic device. When the correction data including the correction value is received, the display device corrects the previously stored background image based on the received correction value and outputs the corrected background image .

The display device may display an indicator for identifying the display device on the background image, and the generating may include displaying the background image on the display area using an indicator displayed on the captured image, The method may further include dividing the peripheral region.

The generating may further include dividing a first region of the photographed image into a display region in which the background image is displayed and dividing the remaining second region into the peripheral region.

The step of photographing the area including the display device may further include the step of, when the background image corrected based on the correction data is displayed on the display device, the area including the display device for displaying the corrected background image, You can shoot.

According to another aspect of the present invention, there is provided an electronic device interfacing with a display device, comprising: a communication unit that performs data communication with the display device; a photographing unit that photographs the image; A processor for controlling the photographing unit to photograph a background image and controlling the communication unit to transmit data on a background image photographed through the photographing unit to the display device, The control unit controls the photographing unit to photograph an area including a display device for displaying a background image. When the image is photographed, the display area in which the background image is displayed is compared with the remaining peripheral area from the photographed image, Correction data is generated , And controls the communication unit to transmit the generated correction data to the display device.

The processor may generate a correction value for matching a pixel value of the display area with a pixel value of the peripheral area by comparing pixel values of the display area and the peripheral area.

The processor may compare a pixel value of at least one pixel included in a predetermined first area of the display area with a pixel value of at least one pixel value included in a predetermined second area of the surrounding area .

The processor may correct the background image based on the correction value and generate data for the corrected background image.

The display device stores and displays a background image photographed from the electronic device. When the correction data including the correction value is received, the display device corrects the previously stored background image based on the received correction value and outputs the corrected background image .

In addition, the display device displays an indicator for identifying the display device on the background image, and the processor displays the background image using the indicator displayed on the captured image, Regions can be distinguished.

In addition, the processor may divide a first predetermined area of the photographed image into a display area in which the background image is displayed and a remaining second area in the peripheral area.

The processor may control the photographing unit to photograph an area including a display device for displaying the corrected background image when the display device displays the corrected background image based on the correction data.

As described above, according to the various embodiments of the present invention, the display device displays the background image corrected by the electronic device, thereby providing a visual effect that provides a transparent display in which the background of the wall surface on which the display device is installed is continuously viewed with the surrounding background To the user.

1 is a system for providing a background image according to an embodiment of the present invention.
FIG. 2 is a first procedure for providing a background image according to an embodiment of the present invention; FIG.
FIG. 3 is a second procedure for providing a background image according to another embodiment of the present invention; FIG.
FIG. 4 is a third process diagram for providing a background image according to another embodiment of the present invention; FIG.
Figure 5 is a schematic block diagram of an electronic device according to one embodiment of the present invention;
6 is a detailed block diagram of an electronic device according to an embodiment of the present invention;
7 is a block diagram of a display device according to an embodiment of the present invention;
8 is a first exemplary diagram for identifying a background area in which a background image is displayed in an electronic device according to an exemplary embodiment of the present invention,
9 is a second exemplary diagram for identifying a background area in which a background image is displayed in an electronic device according to another embodiment of the present invention,
10 is a first example for correcting a background image in an electronic device according to an embodiment of the present invention,
11 is a second exemplary diagram for correcting a background image in an electronic device according to another embodiment of the present invention,
12 illustrates an example of displaying a corrected background image in a display device according to an exemplary embodiment of the present invention,
13 is a flowchart of a method of controlling an electronic device in association with a display device according to an embodiment of the present invention,
14 is a flowchart for generating correction data for a background image in an electronic device according to an embodiment of the present invention.

The terms used in this specification will be briefly described, and the present invention will be described in detail.

Although the terms used in the embodiments of the present invention have been selected in consideration of the functions of the present invention, the present invention is not limited thereto and can be varied depending on the intention or the precedent of the artisan skilled in the art, . Also, in certain cases, there may be a term selected arbitrarily by the applicant, in which case the meaning thereof will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term, not on the name of a simple term, but on the entire contents of the present invention.

Embodiments of the present invention are capable of various transformations and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the description. It is to be understood, however, that it is not intended to limit the scope of the specific embodiments but includes all transformations, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the embodiments of the present invention,

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

The singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "comprise", "comprising" and the like are used to specify that there is a stated feature, number, step, operation, element, component, or combination thereof, But do not preclude the presence or addition of features, numbers, steps, operations, components, parts, or combinations thereof.

In the exemplary embodiments of the present invention, 'module' or 'sub' performs at least one function or operation, and may be implemented in hardware or software, or a combination of hardware and software. In addition, a plurality of 'modules' or a plurality of 'parts' may be integrated into at least one module except for 'module' or 'module' which need to be implemented by specific hardware, and implemented by at least one processor (not shown) .

In an embodiment of the present invention, when a portion is referred to as being "connected" to another portion, it may be referred to as being "directly connected", as well as "electrically connected" . In addition, it includes not only a physical connection but also a wireless connection. Also, when a part is referred to as "including " an element, it does not exclude other elements unless specifically stated otherwise.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Hereinafter, the present disclosure will be described in detail with reference to the drawings.

1 is a system diagram for providing a background image according to an embodiment of the present invention.

As shown in FIG. 1, a system for providing a background image includes an electronic device 100 and a display device 200.

The electronic device 100 may be a portable terminal device such as a smart phone. However, the present invention is not limited thereto, and the electronic device 100 can be implemented with various electronic devices capable of image capturing and data communication with the display device 200. [

The display device 200 may be a smart TV, a digital TV, a desktop PC, a kiosk, or a large-screen video output device.

Such a display device 200 is installed in a specific location (for example, a wall of a building, a wall of a house, or an art wall) and performs data communication with the electronic device 100, On the screen. In particular, the display device 200 can receive a background image of a wall surface on which the display device 200 is installed from the electronic device 100, and display the received background image 10 on the screen. That is, the display device 200 installed on the wall can display a continuous background image 10 with the background of the wall surface, thereby providing the user with a visual effect of providing a transparent display such as a window.

On the other hand, the electronic device 100 photographs an area including the display device 200 that displays the background image 10 according to a user command. Thereafter, the electronic device 100 distinguishes the background region from the captured image and the remaining peripheral region, and compares the pixel difference between the separated background region and the peripheral region. If it is determined that there is a pixel difference between the background area and the surrounding area, the electronic device 100 corrects the previously stored background image based on the pixel value of the surrounding area.

For example, after a background image of a wall surface on which the display device 200 is installed is photographed, light may be irradiated to a wall surface on which the display device 200 is installed due to external environmental factors. If an area including the display device 200 for displaying a background image is photographed through the electronic device 100 under such a condition, a pixel difference may occur between the background area in which the background image is displayed and the remaining peripheral area.

For example, the display device 200 may display the background image received from the electronic device 100 based on the color temperature information applied to the display device 200. [ In this case, when a region including the display device 200 displaying the background image is photographed through the electronic device 100, a pixel difference may occur between the background region in which the background image is displayed and the remaining peripheral region.

In this way, when a pixel difference between the background area in which the background image is displayed and the remaining peripheral area occurs, the electronic device 100 corrects the pixel value of the previously stored background image to the pixel value of the surrounding area, To the display device (200).

When the data of the corrected background image is received, the display device 200 displays the corrected background image 10 in consideration of the state of the display device 200 or the surrounding environment state. Accordingly, the display device 200 can provide a visual effect that a background image displayed through the display device 200 is displayed as a background of a wall surface on which the display device 200 is installed.

2 is a first process diagram for providing a background image according to an embodiment of the present invention.

As shown in FIG. 2, the electronic device 100 executes an application for providing a transparent display such as a window through the display device 200, in accordance with a user command. In a state where the application is executed, the electronic device 100 captures a background image of a region requested by the user (S10).

However, the present invention is not limited to this, and the electronic device 100 may perform the step of performing correction for the background image displayed through the display device 200 after transmitting the photographed background image to the display device 200 , An application for providing a transparent display may be executed in a step S13 to be described later.

Meanwhile, the background image photographed through the electronic device 100 may be an image of an area in which the display device 200 is to be installed.

According to the embodiment, when the background area for the wall surface is a patternless pattern or the same pattern (for example, a stripe pattern), the electronic device 100 photographs a specific area of the wall surface, 200) background image.

In the case where the background area for the wall surface has a specific pattern (e.g., a lattice pattern or a brick pattern), the electronic device 100 displays an area where the display device 200 is installed on the wall surface of the background area And acquire the photographed image as a background image of the display device 200.

According to the embodiment, the user installs the guide bar in the area where the display device 200 is installed before the display device 200 is first installed on the wall surface. Thereafter, the electronic device 100 captures an image in a state in which the guide bar is aligned with the guide line displayed on the screen of the electronic device 100, in accordance with a user command. Then, the electronic device 100 can acquire an image of an area included in the guideline from the photographed image as a background image of the display device 200. [

However, the present invention is not limited to this, and the electronic device 100 can acquire background images of an area where the display device 200 is installed through various embodiments. When the background image is obtained, the electronic device 100 transmits the acquired background image data to the display device 200 (S11).

The display device 200 displays the background image photographed from the electronic device 100 based on the received data when the background image data is received from the electronic device 100 (S12).

In a state that the background image is displayed on the screen of the display device 200, the electronic device 100 photographs an area including the display device 200 displaying the background image according to a user command (S13). When the area including the display device 200 is photographed, the electronic device 100 analyzes the photographed image to generate correction data for the background image, and transmits the generated correction data to the display device 200 (S14 , S15).

Specifically, the electronic device 100 distinguishes the background region from the captured image and the remaining peripheral region from which the background image is displayed. After that, the electronic device 100 compares the pixel difference between the divided background area and the surrounding area. If it is determined that the pixel difference between the background area and the surrounding area has occurred, the electronic device 100 generates a correction value for matching the pixel value of the background area with the pixel value of the surrounding area. Thereafter, the electronic device 100 corrects the background image photographed in the above-described step S10 on the basis of the previously generated correction value, and generates data on the corrected background image.

When the data for the corrected background image is generated, the electronic device 100 transmits the correction data including the data for the corrected background image to the display device 200. Upon receiving the correction data, the display device 200 displays the corrected background image on the screen based on the received correction data (S16).

In this way, the display device 200 displays the background image corrected by the electronic device 100 on the screen, thereby providing a visual effect that the background image to be displayed is displayed as the background of the wall surface on which the display device 200 is installed can do.

3 is a second procedure diagram for providing a background image according to another embodiment of the present invention.

As shown in FIG. 3, the electronic device 100 executes an application for providing a transparent display, such as a window, through the display device 200, in accordance with a user command. In a state in which such an application is executed, the electronic device 100 captures a background image of a region requested by the user (S20).

However, the present invention is not limited to this, and the electronic device 100 may perform the step of performing correction for the background image displayed through the display device 200 after transmitting the photographed background image to the display device 200 , An application for providing a transparent display can be executed in step S23 to be described later.

Meanwhile, the background image photographed through the electronic device 100 may be an image of an area in which the display device 200 is to be installed. Since the embodiment for acquiring the background image has been described with reference to FIG. 2, a detailed description will be omitted below.

When the background image is acquired, the electronic device 100 transmits the acquired background image data to the display device 200 (S21).

The display device 200 displays the background image photographed from the electronic device 100 based on the received data when the background image data is received from the electronic device 100 (S22).

In a state in which the background image is displayed on the screen of the display device 200, the electronic device 100 photographs an area including the display device 200 displaying the background image according to a user command (S23). When the area including the display device 200 is photographed, the electronic device 100 analyzes the photographed image to generate correction data for the background image, and transmits the generated correction data to the display device 200 (S24 , S25).

Specifically, the electronic device 100 distinguishes the background region from the captured image and the remaining peripheral region from which the background image is displayed. After that, the electronic device 100 compares the pixel difference between the divided background area and the surrounding area. If it is determined that the pixel difference between the background area and the surrounding area has occurred, the electronic device 100 generates a correction value for matching the pixel value of the background area with the pixel value of the surrounding area. Thereafter, the electronic device 100 transmits the correction data including the generated correction value to the display device 200. Accordingly, the display device 200 corrects the background image received and stored through the above-described step S21 based on the correction value included in the correction data received from the electronic device 100 (S26). Thereafter, the display device 200 displays the corrected background image on the screen (S27).

In this way, the display device 200 corrects and displays the background image provided from the electronic device 100 with pixels matched with the peripheral area of the wall surface on which the display device 200 is installed, It is possible to provide a visual effect as seen in the background of the installed wall.

FIG. 4 is a third procedure diagram for providing a background image according to another embodiment of the present invention.

As shown in FIG. 4, the electronic device 100 captures a background image of a region requested by the user according to a user command (S30).

The background image photographed through the electronic device 100 may be an image for an area where the display device 200 is to be installed. Since the embodiment for acquiring the background image has been described with reference to FIG. 2, a detailed description will be omitted below.

When the background image is obtained, the electronic device 100 transmits the acquired background image data to the display device 200 (S31).

The display device 200 executes an application for providing a transparent display such as a window through the display device 200. When data on the background image is received from the electronic device 100 in the state where the application is executed, the display device 200 displays the background image photographed from the electronic device 100 based on the received data ( S32).

In a state in which the background image is displayed on the screen of the display device 200, the electronic device 100 captures an area including the display device 200 displaying the background image according to a user command (S33). When the area including the display device 200 is photographed, the electronic device 100 distinguishes the background area from the photographed image and the remaining peripheral area.

Then, the electronic device 100 transmits the correction data including the data of the photographed image, the background image, and the area information of the remaining peripheral area to the display device 200 (S34).

When the correction data is received from the electronic device 100, the display device 200 corrects the previously stored background image based on the received correction data (S35).

Specifically, the display device 200 distinguishes the background area in which the background image is displayed and the remaining peripheral area based on the area information included in the received correction data. Thereafter, the display device 200 compares pixel differences of the divided background region and the surrounding region. If it is determined that the pixel difference between the background area and the surrounding area is generated, the display device 200 generates a correction value for matching the pixel value of the background area with the pixel value of the surrounding area. Thereafter, the display device 200 corrects the background image received and stored through the above-described step S31 based on the previously generated correction value.

When the background image is corrected through this embodiment, the display device 200 displays the corrected background image on the screen (S36).

In this way, the display device 200 corrects and displays the background image provided from the electronic device 100 with pixels matched with the peripheral area of the wall surface on which the display device 200 is installed, It is possible to provide a visual effect as seen in the background of the installed wall.

5 is a schematic block diagram of an electronic device according to an embodiment of the present invention.

As shown in FIG. 5, the electronic device 100 may be implemented as a smart phone, as described above. However, the electronic device 100 may be implemented in a variety of portable terminals such as a PDA, a remote controller, a tablet PC, . ≪ / RTI >

Such an electronic device 100 includes a communication unit 110, a photographing unit 120, a display 130, and a processor 140.

The communication unit 110 can perform communication with an external device. In particular, the communication unit 110 may communicate with the display device 200 to transmit data on the background image of the area where the display device 200 is located.

 The communication unit 110 includes a wireless communication module such as a short distance communication module and a wireless LAN module and a wireless communication module such as a high-definition multimedia interface (HDMI), a universal serial bus (USB), an IEEE (Institute of Electrical and Electronics Engineers) And a communication module.

The short-range communication module is a communication module for performing data communication by performing wireless communication with a plurality of pre-registered peripheral devices (not shown) including the display device 200. The short-range communication module includes a bluetooth module, an infrared communication (IrDA, infrared data association module, an NFC (Near Field Communication) module, a WIFI module, and a Zigbee module.

The wireless LAN module is a module that is connected to an external network according to a wireless communication protocol such as IEEE, and performs communication, and can perform data communication with a web server (not shown), a content server (not shown), and the like.

The wireless communication module may further include a mobile communication module for performing communication by accessing a mobile communication network according to various mobile communication standards such as 3G (3rd Generation), 3rd Generation Partnership Project (3GPP), and Long Term Evolution It is possible.

As described above, the communication unit 110 can be implemented by the various short-range communication methods described above, and can adopt other communication technologies not mentioned in this specification as needed.

Meanwhile, the wired communication module provides the interface with various source devices such as USB 2.0, USB 3.0, HDMI, and IEEE 1394. The wired communication module may receive the content data transmitted from the external server (not shown) through the wired cable or transmit the stored content data to the external recording medium according to a control command of the processor 140 to be described later. Also, the wired communication module can receive power from a power source via a wired cable.

The photographing unit 120 includes a lens (not shown) and an image sensor (not shown) and is disposed on the rear surface of the electronic device 100 (i.e., the surface opposite to the surface on which the display 130 is disposed) Take a picture. In particular, the photographing unit 120 may photograph an area of a background image to be displayed through the display device 200. [

In addition, the photographing unit 120 may photograph an area including the display device 200 displaying the background image.

Here, the display device 200 may be a device that displays a background image of the background of the wall provided from the electronic device 100, or may be installed in a frame shape in one area of the wall surface or in a stand shape on the wall surface.

The display 130 displays an image on the screen. In particular, the display 130 displays an image to be photographed by the photographing unit 120 on the screen. In addition, the display 130 displays, on the screen, an area including a display device 200 for displaying a background image according to a user command.

Processor 140 generally controls operations for configurations that make up electronic device 100. In particular, the processor 140 controls the photographing unit 120 to photograph the background image to be displayed on the display device 200 according to a user command. In accordance with such a control command, the photographing unit 120 photographs a background image to be displayed on the display device 200. [ When the background image is photographed, the processor 140 controls the communication unit 110 to transmit data on the photographed background image to the display device 200. [ In addition, the processor 140 may store the background image photographed through the photographing unit 120 in a memory 160 to be described later.

The communication unit 110 transmits data of the background image photographed through the photographing unit 120 to the display device 200 according to a control command of the processor 140. [ Accordingly, the display device 200 receives data on the background image transmitted from the electronic device 100, and displays the background image on the screen based on the received data.

In this way, the display device 200 can display the background image provided from the electronic device 100 on the screen, thereby providing the user with a visual effect of providing a transparent display such as a window.

Meanwhile, the processor 140 controls the photographing unit 120 to photograph an area including a display device 200 that displays a background image and a background image in accordance with a user's command.

In accordance with such a control command, the photographing unit 120 photographs an area including a display device 200 that displays a background image and a continuous background image. When the image of the area including the display device 200 for displaying the background image is photographed, the processor 140 distinguishes the area where the background image is displayed (hereinafter referred to as the background area) from the photographed image and the remaining peripheral area .

According to an embodiment, the processor 140 may divide the first region of the photographed image into a background image in which the background image is displayed, and divide the remaining second region into peripheral regions.

According to another embodiment, the display device 200 may display an indicator for identifying the display device 200 together with a background image to be displayed on the screen. Accordingly, the processor 140 can distinguish the background area in which the background image is displayed from the remaining peripheral area by using the indicator displayed on the photographed image.

In this embodiment, if the background region in which the background image is displayed is separated from the remaining peripheral region, the processor 140 compares the background region separated from the photographed image with the remaining peripheral region to generate correction data for the background image , And controls the communication unit (110) to transmit the generated correction data to the display device (200).

Accordingly, the communication unit 110 transmits the correction data for the background image to the display device 200, and the display device 200 displays the corrected background image on the screen on the basis of the correction data received from the electronic device 100 As shown in FIG.

Hereinafter, the processor 140 will describe in detail the operation of generating the correction data for the background image.

According to one embodiment, when the background region and the remaining peripheral region are distinguished from the photographed image, the processor 140 corrects the previously stored background image based on the pixel values of the separated background region and the peripheral region, As shown in FIG.

That is, the processor 140 compares the pixel values of the background region and the surrounding region to generate a correction value for matching the pixel value of the background region with the pixel value of the surrounding region.

Specifically, the processor 140 determines a pixel value of at least one pixel included in a predetermined first area of the background area and a pixel value of at least one pixel included in a predetermined second area of the surrounding area . As a result of the comparison, if the two pixel values are different, the processor 140 generates a correction value for matching the pixel value of at least one pixel included in the first area with the pixel value of at least one pixel included in the second area do.

Thereafter, the processor 140 corrects the previously stored background image based on the generated correction value, generates correction data including the corrected background image, and transmits the generated correction data to the display device 200 ). Accordingly, the display device 200 can display the corrected background image based on the correction data received from the electronic device 100 on the screen.

According to another embodiment, the processor 140 generates correction data including a correction value generated for matching the pixel value of the background area with the pixel value of the surrounding area, as described above, and outputs the generated correction data To the display device 200 through the communication unit 110.

 In this case, the display device 200 can correct the pre-stored background image based on the correction value included in the correction data received from the electronic device 100, and display the corrected background image on the screen.

According to another embodiment, the processor 140 generates correction data including area information for the background area and the remaining area separated from the photographed image and data on the photographed image, and transmits the generated correction data to the communication part 110 to the display device 200.

In this case, the display device 200 distinguishes the background area and the remaining peripheral area of the background image based on the area information included in the correction data received from the electronic device 100, And generates a correction value for matching the pixel value of the background area with the pixel value of the surrounding area.

According to an embodiment, the display device 200 may include a pixel value of at least one pixel included in a predetermined first area of a background area for displaying a background image and at least one pixel included in a predetermined second area Are compared with each other. As a result of the comparison, if the two pixel values are different, the processor 140 generates a correction value for matching the pixel value of at least one pixel included in the first area with the pixel value of at least one pixel included in the second area can do.

When the correction value is generated, the display device 200 can correct the pre-stored background image based on the generated correction value, and display the corrected background image on the screen.

When the corrected background image is generated through the above-described various embodiments, the display device 200 displays the corrected background image on the screen. The background image displayed on the screen of the display device 200 by the change of the state of the display device 200 (for example, the color temperature applied to the display device 200) or the ambient environment condition It is possible to improve the problem that the device 200 is displayed differently from the background of the wall on which the device 200 is installed.

Meanwhile, the processor 140 may control the photographing unit 120 to photograph an area including the display device 200 displaying the corrected background image according to a user command. According to the control command, the photographing unit 120 photographs an area including the display device 200 that displays the corrected background image. Thereafter, the processor 140 distinguishes the background region from the captured image and the remaining peripheral region from the captured image, and determines whether the corrected background image is previously corrected based on the pixel difference between the divided background region and the surrounding region The background image can be recalibrated.

6 is a detailed block diagram of an electronic device according to an embodiment of the present invention.

6, in addition to the communication unit 110, the photographing unit 120, the display 130, and the processor 140, the electronic device 100 includes a speaker 150, a memory 160, (170).

The detailed configuration of the electronic device 100 shown in FIG. 6 is merely an example. Depending on the type or purpose of the electronic device 100, a part of the configuration of the electronic device 100 shown in FIG. 6 may be omitted, .

6, the photographing unit 120 for photographing the above-described image may be a dual camera having a plurality of camera modules, or may include one camera module, and the display 130 may include a camera module It is possible to display not only a back-up image but also contents received from outside and various UIs.

Such a display 130 may be implemented as a touch screen in combination with a touch sensing unit and may be implemented in at least two areas of a front area and a side area and a rear area of the electronic device 100 in the form of a flexible display . The flexible display can be characterized by being able to bend, bend or speak without damage through a thin, flexible substrate such as paper.

The speaker 150 can output various kinds of audio data as well as various kinds of notification sounds and voice messages through various processing operations such as decoding, amplification, and noise filtering by an audio processing unit (not shown). When the application for providing the transparent display is executed through the display device 200, the speaker 150 may provide a guidance message related to the application in audio form.

The memory 160 stores various modules for driving the electronic device 100.

For example, the memory 160 may further store an operating program for controlling the operation of the electronic device 100. Here, the operating program may be a program that is read and compiled in the storage unit 190 and operates each configuration of the user terminal device 100 when the electronic device 100 is turned on.

In addition, the memory 160 may store software including a base module, a sensing module, a communication module, a presentation module, a web browser module, and a service module. At this time, the base module is a base module that processes signals transmitted from the respective hardware included in the electronic device 100 and transfers the signals to the upper layer module. The sensing module is a module for collecting information from various sensors and analyzing and managing the collected information, and may include a face recognition module, a voice recognition module, a motion recognition module, and an NFC recognition module. The presentation module is a module for constructing a display screen, and may include a multimedia module for reproducing and outputting multimedia contents, a UI, and a UI rendering module for performing graphics processing. The communication module is a module for performing communication with the outside. A web browser module refers to a module that accesses a web server by performing web browsing. A service module is a module including various applications for providing various services.

As described above, the memory 160 may include various program modules, but it goes without saying that various program modules may be omitted, modified or added depending on the type and characteristics of the electronic device 100 '. In addition, the memory 160 may store executable program related information for an application for providing a transparent display through the display device 200. [

The sensing unit 170 may be implemented with various sensing sensors for sensing a user command. For example, the sensing unit 170 may include a touch sensing unit. In addition, the sensing unit 170 senses various information using various sensors. For example, the sensing unit 170 may sense motion information using a motion sensor (e.g., an acceleration sensor, a gyro sensor, a geomagnetic sensor, or the like).

Up to now, each configuration of the electronic device 100 according to the present invention has been described in detail. Hereinafter, each configuration of the above-described display device 200 will be described in detail.

7 is a block diagram of a display device according to an embodiment of the present invention.

7, the display device 200 includes a broadcast receiving unit 230, a signal separating unit 235, an A / V processing unit 240, an audio output unit 245, a storage unit 250, A display unit 255, an operation unit 260, a processor 270, a video signal generator 275, a panel unit 280, and an LED driver 290.

The broadcast receiving unit 230 receives and demodulates broadcasts from a broadcast station or satellite by wire or wirelessly. Specifically, the broadcast receiver 230 receives and demodulates a transport stream through an antenna or a cable to generate a digital transport stream signal (specifically, a clock signal TS_CLK, a sync signal TS_SYNC, valid signal TS_VALID and eight data signals TS_DATA [7: 0]). In addition, the broadcast receiver 230 can receive a broadcast signal from an external device (e.g., a set-top box).

The signal separator 235 separates the transport stream signal provided from the broadcast receiver 230 into a video signal, an audio signal, and an additional information signal. The signal separation unit 235 transmits the video signal and the audio signal to the A / V processing unit 240.

The A / V processing unit 240 performs signal processing such as video decoding, video scaling, and audio decoding on the video signal and the audio signal input from the broadcast receiving unit 230 and the storage unit 250. The A / V processing unit 240 outputs the video signal to the video signal generating unit 220 and outputs the audio signal to the audio output unit 145.

On the other hand, when the received video and audio signals are stored in the storage unit 250, the A / V processing unit 240 may output the video and audio to the storage unit 250 in a compressed form.

The audio output unit 245 converts the audio signal output from the A / V processing unit 240 into sound and outputs the sound through a speaker (not shown) or an external device connected through an external output terminal (not shown) .

The video signal generation unit 275 generates a GUI (Graphic User Interface) for providing to the user. The video signal generation unit 275 adds the generated GUI to the image output from the A / V processing unit 240. The video signal generation unit 275 provides the video signal corresponding to the video to which the GUI is added to the panel unit 280. [ Accordingly, the panel unit 280 displays various information provided by the display device 200 and an image transmitted from the image signal generation unit 275.

The video signal generator 275 may extract brightness information corresponding to the video signal and generate a dimming signal corresponding to the extracted brightness information. The image signal generator 275 may provide the generated dimming signal to the panel unit 280. [ This dimming signal may be a PWM signal. In the present embodiment, it is described that the image signal generator 275 generates a dimming signal and provides the dimming signal to the panel unit 280. However, in the implementation, the panel unit 280 receiving the image signal may generate the dimming signal itself And may be implemented in a form that is generated and used.

The panel unit 280 displays an image. The panel unit 280 may be implemented as various types of displays such as a liquid crystal display (LCD), an organic light emitting diode (OLED) display, and the like. A driving circuit, a backlight unit, and the like, which may be implemented in the form of an a-si TFT, a low temperature poly silicon (LTPS) TFT, an OTFT (organic TFT), or the like, may also be included in the panel unit 280. Meanwhile, the panel unit 280 may be implemented as a touch screen in combination with the touch sensing unit.

In the case where the panel unit 280 comprises an LCD panel that transmits light emitted from a backlight through an LCD or displays an image by controlling the degree of transmission, the panel unit 280 is connected to a backlight through a power supply unit Receives the necessary power, and transmits the light emitted from the backlight to the LC. The panel unit 280 receives power from the power supply unit (not shown) for the pixel electrode and the common electrode, and adjusts the LC according to the video signal input to the video signal generation unit 275 to display an image have.

Here, the backlight is configured to emit light to the LCD. The backlight may include a cold cathode fluorescent lamp (CCFL) and a light emitting diode (LED). Hereinafter, the backlight is illustrated as being composed of a light emitting diode and a light emitting diode driving circuit, but may be implemented in other configurations than the LED in the implementation.

On the other hand, when a light emitting diode is used, the backlight must have an LED driver for driving the LED. Specifically, the LED driver unit provides a constant current corresponding to a brightness value to the LED so that the backlight operates at a brightness value corresponding to the dimming information provided by the video signal generator 275. [ The LED driver unit may not provide a constant current to the LED according to the dimming signal.

Meanwhile, when the panel unit 280 is an OLED panel, the panel unit 200 may display an image corresponding to a video signal supplied from a video signal generating unit 275 and a driving power supplied from a power supply unit . For this, the OLED panel unit 280 may include a plurality of pixels including an organic light emitting diode. Here, the organic light emitting diode refers to a 'self-emitting organic material' that emits light by using an electroluminescence phenomenon that emits light when a current flows through a fluorescent organic compound.

The LED driver 290 drives the panel unit 280 under the control of the processor 270.

The storage unit 250 may store image contents. In detail, the storage unit 250 can receive and store video and audio compressed image contents from the A / V processing unit 240. The A / V processing unit 240 As shown in Fig. The storage unit 250 may be implemented as a hard disk, a nonvolatile memory, a volatile memory, or the like.

The operation unit 260 is implemented by a touch screen, a touch pad, a key button, a keypad, or the like, and provides a user operation of the display device 200. The control unit 260 receives input of control commands from an external control device (for example, a remote control) have.

The communication unit 255 is configured to perform communication with various types of external devices according to various types of communication methods. The communication unit 255 may include a Wi-Fi chip and a Bluetooth chip. The processor 270 can communicate with various external devices using the communication unit 255. [ In particular, the communication unit 255 can perform communication with the external electronic device 100. [

However, the present invention is not limited thereto. The communication unit 255 may include a USB port to which a USB connector can be connected, various external input ports for connecting to various external terminals such as a headset, a mouse, and a LAN, a DMB (Digital Multimedia Broadcasting) And a DMB chip for receiving and processing the data.

The display device 200 may further include a power supply unit (not shown) and a sensing unit (not shown) in addition to the configuration shown in FIG. The power supply unit supplies power to each configuration in the display device 200. Specifically, the power supply unit generates a plurality of driving power supplies having different potentials, and can feedback-control the voltage value of one of the driving power supplies.

In addition, the sensing unit includes a sensor for acquiring various sensing information. Specifically, the sensing unit may include a color sensor for acquiring information on the color temperature of the background area around the display device 200. [ In addition, the sensing unit may include various sensing devices such as a camera, a motion sensing unit, and the like.

The processor 270 controls the overall operation of the display device 200. Specifically, the processor 270 may control the image signal generator 275 and the panel unit 280 so that an image according to the control command input through the operation unit 260 is displayed. In particular, the processor 270 may include a CPU, a GPU, a ROM, and a RAM, as shown in FIG.

In particular, the processor 270 may control the communication unit 255 to receive correction data for the background image or the corrected background image from the electronic device 100.

According to an embodiment, when the processor 270 receives the data of the background image photographed from the electronic device 100, the processor 270 generates the image signal generator 275 and the panel unit 280 Can be controlled.

In addition, when the correction data for the corrected background image is received from the electronic device 100, the processor 270 controls the image signal generating unit 275 and the panel unit (not shown) to display the corrected background image based on the received correction data 280 can be controlled.

On the other hand, when the correction data including the correction value for the background image correction is received from the electronic device 100, the processor 270 reads the background image pre-stored in the basis storage unit 257 based on the correction value included in the received correction data . Then, the processor 270 may control the video signal generator 275 and the panel unit 280 to display the corrected background image.

The processor 270 transmits correction data including the data of the image of the area including the display device 200 and the background image and the area information of the remaining peripheral area from the electronic device 100 to the communication unit 255, Lt; / RTI > In this case, the processor 270 distinguishes the background area in which the background image is displayed from the remaining peripheral area based on the area information included in the received correction data. Then, the processor 270 compares pixel differences of the divided background region and the surrounding region. If it is determined that the pixel difference between the background region and the surrounding region has occurred, the processor 270 generates a correction value for matching the pixel value of the background region with the pixel value of the surrounding region. Thereafter, the processor 270 corrects the background image stored in the storage unit 257 based on the generated correction value, and outputs the corrected background image to the image signal generator 275 and the panel unit 272, (280).

Up to now, each configuration of the display device 200 according to the present invention has been described in detail. Hereinafter, an operation for correcting a background image displayed through the display device 200 in the electronic device 100 according to the present invention will be described in detail.

8 is a first exemplary view for identifying a background area in which background images are displayed in an electronic device according to an embodiment of the present invention.

As described above, in a state in which the application for providing the transparent display is executed through the display device 200, the electronic device 100 photographs the background corresponding to the user command, and displays the data on the photographed background image To the device (200). 8, the display device 200 displays the background of the wall surface on which the display device 200 is installed and the background of the continuous background based on the data of the background image received from the electronic device 100 And displays the image 810.

Meanwhile, the electronic device 100 photographs an area including the display device 200 that displays the background image 810 according to a user command, and acquires an image of the corresponding area. Specifically, the electronic device 100 provides a guide UI 200 'for guiding the area where the display device 200 is installed to be included in the first area of the screen.

Thereafter, the electronic device 100 captures an image in a state that the image 820 for the display device 200 is included in the guide UI 200 'displayed on the screen of the electronic device 100 according to a user command . When the image is photographed, the electronic device 100 analyzes the photographed image to determine the first area included in the guide UI 200 'as a background area for the background image 810, and the remaining second area It can be judged as a peripheral area.

9 is a second exemplary diagram for identifying a background area in which background images are displayed in an electronic device according to another embodiment of the present invention.

 As described above, in a state in which the application for providing the transparent display is executed through the display device 200, the electronic device 100 photographs the background corresponding to the user command, and displays the data on the photographed background image To the device (200). 9, the display device 200 displays the background of the wall surface on which the display device 200 is installed and the background of the continuous background based on the data of the background image received from the electronic device 100 And displays the image 910.

At this time, the display device 200 displays a plurality of indicators 911 for distinguishing the remaining area from the display area for displaying the background image 910 on the screen on which the background image 910 is displayed.

On the other hand, the electronic device 100 photographs an area including a display device 200 that displays a background image 910 including an indicator 911 according to a user command. Thereafter, the electronic device 100 extracts an outer portion of the display device 200 from the image photographed through the indicator 911 'displayed on the photographed image, determines a background area in which the background area is displayed, Can be determined as a peripheral region.

FIG. 10 is a first example for correcting a background image in an electronic device according to an embodiment of the present invention, and FIG. 11 is a second example for correcting a background image in an electronic device according to another embodiment of the present invention. .

 As described above, in a state in which the application for providing the transparent display is executed through the display device 200, the electronic device 100 photographs the background corresponding to the user command, and displays the data on the photographed background image To the device (200). Accordingly, the display device 200 displays the background image on the screen based on the data received from the electronic device 100, as shown in Fig.

Meanwhile, after the background image is photographed through the electronic device 100, the lamp 40 located at the periphery where the display device 200 is installed may be turned on. In this case, the ambient brightness of the wall surface on which the display device 200 is installed may be brightened by the light of the lamp 40. In this way, when the ambient brightness of the wall surface on which the display device 200 is installed is bright, the background image displayed through the display device 200 can be displayed relatively dark compared to the background of the wall surface on which the display device 200 is installed .

When such an event occurs, the electronic device 100 can correct the background image displayed through the display device 200 through the following embodiments.

Specifically, the electronic device 100 photographs an area including a display device 200 that displays a background image in accordance with a user command. When the image of the area including the display device 200 for displaying the background image is photographed, the electronic device 100 distinguishes the background area in which the background image is displayed from the photographed image and the remaining peripheral area do.

Thereafter, the electronic device 100 calculates the pixel value of at least one pixel included in the predetermined first area among the divided background areas from the photographed image and the pixel value of at least one pixel included in the predetermined second area The pixel values are compared.

For example, the electronic device 100 calculates an average value (hereinafter referred to as a first average value) from pixel values of pixels included in an area corresponding to any 10 x 10 of the plurality of pixels included in the background area. Then, the electronic device 100 calculates an average value (hereinafter referred to as a second average value) from the pixel values of the pixels included in the region corresponding to any 10 x 10 of the plurality of pixels included in the peripheral region. Thereafter, the electronic device 100 compares the first average value calculated in the background area with the second average value calculated in the peripheral area. If the two average values are different from each other, the electronic device 100 generates a correction value capable of matching the first average value with the second average value.

On the other hand, as shown in FIG. 11, the electronic device 100 divides a background area separated from photographed images into a plurality of areas (hereinafter, referred to as first to fourth areas) 1111 to 1114. Then, the electronic device 100 determines regions (hereinafter referred to as first to fourth regions) 1121 to 1124 adjacent to the first to fourth regions 1111 to 1114 of the peripheral region.

Thereafter, the electronic device 100 displays the pixel values of the first to fourth regions 1111 to 1114 and the first to fourth regions 1121 to 1124 adjacent to the first to fourth regions 1111 to 1114, ) Are compared with each other.

For example, the electronic device 100 may generate first to fourth pixel values from pixel values of pixels included in an area corresponding to any 3 x 3 of the plurality of pixels included in each of the first to fourth areas 1111 to 1114, 4 regions 1111 to 1114, respectively. The electronic device 100 includes the first to fourth regions 1121 to 1124 corresponding to arbitrary 3 x 3 adjacent to the first to fourth regions 1111 to 1114 of the peripheral region, And obtains an average value for each of the first to fourth regions 1121 to 1124 from the pixel value of the pixel. Thereafter, the electronic device 100 compares the average value of the first and first 'regions, the average value of the second and second' regions, the average of the third and third regions, and the average of the fourth and fourth regions . As a result of comparison, if the average value of the first area 1111 of the first to fourth areas 1111 to 1114 is different from the average value of the adjacent first area, the electronic device 100 determines that the average value of the first area 1111 A correction value that can be matched with an average value of the first region is generated.

When the correction value is generated through the embodiment, the electronic device 100 corrects the pre-stored background image based on the generated correction value, and transmits the corrected background image to the display device 200. Accordingly, the display device 200 can display a background image having a brightness approximate to the background of the wall surface illuminated by the light of the lamp 40. By displaying such a corrected background image, the user can be provided with a visual effect that provides a transparent display in which the background of the wall surface on which the display device 200 is installed is continuously viewed with the surrounding background.

FIG. 12 is an exemplary view for displaying a corrected background image in a display device according to an embodiment of the present invention.

As shown in FIG. 12 (a), after the background image is photographed through the electronic device 100, the lamp 40 located at the periphery where the display device 200 is installed may be turned on. In this case, the brightness of the background 1210 of the wall surface on which the display device 200 is installed may be brightened by the light of the lamp 40. When the ambient brightness of the wall surface on which the display device 200 is installed is increased, the background image 1220 displayed through the display device 200 is relatively in contrast to the background 1210 of the wall surface on which the display device 200 is installed As shown in FIG.

However, as described above, when the background image is corrected through the electronic device 100, the background image 1220 'displayed through the display device 200, as shown in FIG. 12 (b) May have a brightness approximate to the background 1210 'of the wall illuminated by the light of the display 40. As such a corrected background image is displayed, it is possible to provide the user with a visual effect of providing a transparent display in which the background of the wall surface on which the display device 200 is installed is continuously viewed with the surrounding background.

Hereinafter, a method for providing a transparent display through the display device 200 in the electronic device 100 according to the present invention will be described in detail.

13 is a flowchart of a method of controlling an electronic device in association with a display device according to an embodiment of the present invention.

As shown in FIG. 13, the electronic device 100 executes an application for providing a transparent display through the display device 200. In a state where such an application is executed, the electronic device 100 captures a background image to be displayed on the display device 200 (S1310). Thereafter, the electronic device 100 transmits data on the photographed background image to the display device 200 (S1320). At this time, the electronic device 100 stores the photographed background image in the memory.

The display device 200 receiving the background image data from the electronic device 100 displays the background image on the screen based on the received data. Meanwhile, the electronic device 100 photographs an area including the display device 200 displaying the background image according to a user command (S1330).

Thereafter, the electronic device 100 generates correction data for the background image by comparing the area where the background image is displayed (hereinafter referred to as the background area) and the remaining peripheral area from the photographed image (S1340). Then, the electronic device 100 transmits the correction data for the background image to the display device 200 (S1350). Accordingly, the display device 200 can display the corrected background image based on the correction data received from the electronic device 100 on the screen.

On the other hand, the electronic device 100 re-captures an area including the display device 200 that displays the corrected background image according to a user command. Thereafter, the electronic device 100 repeats the above-described series of operations, re-adjusts the background image, and transmits the correction data for the re-corrected background image to the display device 200. [

14 is a flowchart for generating correction data for a background image in an electronic device according to an embodiment of the present invention.

14, when an image of an area including a display device 200 for displaying a background image is photographed, the electronic device 100 displays a background image in which a background image is displayed from the photographed image, (S1410).

According to one embodiment, the display device 200 may display an indicator for identifying the display device 200 on the background image. Accordingly, when the image of the area including the display device 200 for displaying the background image is photographed, the electronic device 100 displays the background image in which the background image is displayed using the indicator displayed on the photographed image, .

According to another embodiment, when the image of the area including the display device 200 for displaying the background image is photographed, the electronic device 100 displays the first region of the photographed image as a background image Background region, and the remaining second region can be divided into peripheral regions.

If the background region and the peripheral region are distinguished from the photographed image, the electronic device 100 compares the pixel values of the background region and the peripheral region (S1420). Specifically, the electronic device 100 can compare pixel values of at least one pixel included in a predetermined first area of the background area with pixel values of at least one pixel included in a predetermined second area of the surrounding area .

As a result of comparison, if the pixel values of the two areas are different, the electronic device 100 generates a correction value for matching the pixel value of the background area with the pixel value of the surrounding area (S1430).

Thereafter, the electronic device 100 corrects the background image pre-stored with the generated correction value, and transmits the correction data including the data of the corrected background image to the display device 200. [ Accordingly, the display device 200 can display the corrected background image based on the correction data received from the electronic device 100. [

On the other hand, when the correction value is generated in the above-described step S1430, the electronic device 100 can transmit the correction data including the generated correction value to the display device 200. [ When the correction data is received, the display device 200 can correct the previously stored background image based on the correction value included in the received correction data, and display the corrected background image on the screen.

On the other hand, the control method of the electronic device 100 according to the various embodiments described above may be software-coded and stored in a non-transitory readable medium. Such non-transiently readable media can be used in various devices.

A non-transitory readable medium is a medium that stores data for a short period of time, such as a register, cache, memory, etc., but semi-permanently stores data and is readable by the apparatus. Specifically, it may be a CD, a DVD, a hard disk, a Blu-ray disk, a USB, a memory card, a ROM, or the like.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention.

110: communication unit 120: photographing unit
130: Display 140: Processor
150: speaker 160: memory
170:

Claims (16)

A control method of an electronic device interlocked with a display device,
Capturing a background image to be displayed on the display device;
Transmitting data on the photographed background image to the display device;
Photographing an area including a display device for displaying the background image;
Generating correction data for the background image by comparing the display area where the background image is displayed and the remaining peripheral area from the photographed image; And
Transmitting the correction data to the display device;
≪ / RTI > The method according to claim 1,
Wherein the generating comprises:
Comparing pixel values of the display region and the peripheral region; And
Generating a correction value for matching a pixel value of the display area with a pixel value of the peripheral area;
The control method comprising the steps of: 3. The method of claim 2,
Wherein the comparing comprises:
Wherein the comparison unit compares a pixel value of at least one pixel included in a predetermined first area of the display area with a pixel value of at least one pixel included in a predetermined second area of the peripheral area. 3. The method of claim 2,
Wherein the generating comprises:
Correcting the background image based on the correction value and generating data for the corrected background image;
Further comprising the steps of: 3. The method of claim 2,
The display device includes:
Storing and displaying a background image photographed from the electronic device,
And when the correction data including the correction value is received, corrects the previously stored background image based on the received correction value, and outputs the corrected background image. 3. The method of claim 2,
The display device includes:
An indicator for identifying the display device is displayed together with the background image,
Wherein the generating comprises:
Separating a display area in which the background image is displayed and the surrounding area by using an indicator displayed on the photographed image;
Further comprising the steps of: 3. The method of claim 2,
Wherein the generating comprises:
Dividing a predetermined first area of the photographed image into a display area in which the background image is displayed and dividing the remaining second area into the peripheral area;
Further comprising the steps of: The method according to claim 1,
The step of photographing an area including the display device includes:
When the display device displays the corrected background image based on the correction data, re-capturing the area including the display device for displaying the corrected background image. 1. An electronic device interlocked with a display device,
A communication unit for performing data communication with the display device;
A photographing unit for photographing an image; And
And a processor for controlling the photographing unit to photograph a background image to be displayed on the display device according to a user command and controlling the communication unit to transmit data on a background image photographed through the photographing unit to the display device ,
The processor comprising:
Controls the photographing section to photograph an area including a display device for displaying the background image according to the user command,
The image processing apparatus according to claim 1, wherein when the image is photographed, the control unit generates the correction data for the background image by comparing the display area where the background image is displayed and the remaining peripheral area from the photographed image, Of the electronic device. 10. The method of claim 9,
The processor comprising:
And generates a correction value for matching a pixel value of the display area with a pixel value of the peripheral area by comparing pixel values of the display area and the peripheral area. 11. The method of claim 10,
The processor comprising:
And compares pixel values of at least one pixel included in a predetermined first area of the display area with pixel values of at least one pixel value included in a predetermined second area of the peripheral area. 11. The method of claim 10,
The processor comprising:
Corrects the background image based on the correction value, and generates data on the corrected background image. 11. The method of claim 10,
The display device includes:
Storing and displaying a background image photographed from the electronic device,
And when the correction data including the correction value is received, corrects the previously stored background image based on the received correction value, and outputs the corrected background image. 11. The method of claim 10,
The display device includes:
An indicator for identifying the display device is displayed together with the background image,
The processor comprising:
And distinguishes the display area in which the background image is displayed from the peripheral area by using an indicator displayed on the photographed image. 11. The method of claim 10,
The processor comprising:
Wherein the first area of the captured image is divided into a display area in which the background image is displayed and the remaining second area is divided into the peripheral area. 11. The method of claim 10,
The processor comprising:
And controls the photographing section to photograph an area including a display device for displaying the corrected background image when the display device displays the corrected background image based on the correction data.

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