KR101314685B1 - Display apparatus having camera, remote controller for controlling the display apparatus, and display control method thereof - Google Patents

Abstract

A display device is disclosed. The apparatus may include a display unit for outputting an image signal on a screen, a photographing unit for photographing the front of the display device, a storage unit for storing preference characteristic information matched for each user, and a case where a user is included in an image photographed by the photographing unit. And controlling the display unit to output an image signal according to preference characteristic information corresponding to the user, and when the captured image includes a laser pointer facing the screen, performing a control operation according to a specified position or a movement trajectory of the laser pointer. It includes a control unit. Accordingly, display control can be conveniently performed.

Description

Display device having a photographing unit, a remote control for controlling the same, a display control method thereof {DISPLAY APPARATUS HAVING CAMERA, REMOTE CONTROLLER FOR CONTROLLING THE DISPLAY APPARATUS, AND DISPLAY CONTROL METHOD THEREOF}

The present invention relates to a display apparatus, a remote controller for controlling the same, and a display control method thereof, and more particularly, to a display apparatus for controlling a display operation through an image photographed using a photographing unit, a remote controller for controlling the same, and a display thereof. Control method.

Various types of electronic products are being developed and distributed by the development of electronic technology. Among them, more and more functions are installed in display devices such as TVs, which are widely used in general homes, to attract buyers.

The user may perform various functions using the display device. In other words, in addition to simply selecting and watching a broadcast channel as in the related art, data may be transmitted / received through a connection with another device or may be connected to the Internet to watch various websites.

In addition, various functions included in the display device may be directly set and watched according to a user's preference.

In particular, with the advent of digital broadcasting, much more broadcasting channels and contents have been provided than in the past. In this situation, a need has arisen for a technology that allows a user to easily tune into a channel he or she primarily watches.

In addition, there is a need to diversify the interface with the user so that various functions provided in the display device can be used more conveniently.

The present invention is in accordance with the above-described needs, an object of the present invention, a display device capable of performing various control operations according to the image photographed using the photographing unit, a remote control for controlling the operation of the display device, the display control In providing a method.

In order to achieve the above object, the display device according to an embodiment of the present invention, the display unit for outputting an image signal on the screen, the photographing unit for photographing the front of the display device, the preference characteristics matched for each user A storage unit for storing the image, if the user is included in the image photographed by the photographing unit, controlling the display unit to output the image signal according to preference characteristic information corresponding to the user, and displaying the screen on the captured image. When the laser pointer is included, the controller includes a control unit configured to perform a control operation according to a designated position and a movement trajectory of the laser pointer.

Here, the display apparatus may further include a parsing unit for parsing the image photographed by the photographing unit to detect a user image and a communication unit for transmitting the user image detected by the parsing unit to a remote controller.

Alternatively, the display device may further include a communication unit which transmits the image photographed by the photographing unit to a remote controller. The controller may receive a control signal according to the user's preference characteristic information included in the image from the remote controller and control the display unit to output the video signal according to the control signal.

On the other hand, the control unit, on the image taken by the photographing unit, detects the position where the infrared laser emitted from the laser pointer is displayed, and the laser pointer on the screen according to the ratio between the size of the image and the size of the screen You can estimate the point you specify.

Here, the controller may display the cursor at the estimated point and control the display unit to move the cursor according to the movement trajectory of the laser pointer.

The controller determines whether the movement trajectory matches the motion information previously stored in the storage unit when the position where the infrared laser emitted from the laser pointer is displayed is moved on the image photographed by the photographing unit. The control operation corresponding to the motion information may be performed.

In the above embodiments, the preference characteristic information may be preference channel information having a high viewing frequency of the recognized user. When the user is recognized, the controller may control the display unit to select and display a preferred channel corresponding to the recognized user immediately.

Alternatively, in the above embodiments, the preference characteristic information may include preference channel information with a high frequency of viewing of the recognized user, channel information last viewed by the recognized user, and a volume state preset by the recognized user. And at least one of color, brightness, contrast, screen size, language, resolution, sharpness, and frequency information.

On the other hand, the display device according to another embodiment of the present invention, a display unit for outputting an image signal on the screen, a photographing unit for photographing the front of the display unit, a storage unit for storing the preference characteristic information matched for each user, the photographing And a parsing unit for detecting a user image by parsing the captured image, and a controller for controlling the display unit to output the image signal according to preference characteristic information corresponding to the user image when the user image is detected. Here, the preference characteristic information includes preference channel information having a high viewing frequency of the recognized user, channel information last viewed by the recognized user, volume state, color, brightness, contrast, preset by the recognized user, It may be at least one of screen size, language, resolution, sharpness, and frequency information.

According to another aspect of the present invention, a display apparatus includes a display unit for outputting an image signal on a screen, a photographing unit for photographing the front of the display device, a storage unit for storing motion information of a laser pointer, and A parsing unit for parsing the photographed image and recognizing the laser pointer toward the screen, and when the laser pointer is recognized, confirms the motion information corresponding to the designated position and the movement trajectory of the laser pointer, and corresponds to the identified motion information. It includes a control unit for performing a control operation.

Here, the controller estimates a point designated by the laser pointer on the screen in consideration of a ratio between the size of the screen and the size of the image photographed by the photographing unit, and displays a cursor on the estimated point. The display unit may be controlled to move the cursor according to the movement trajectory of.

According to an embodiment of the present disclosure, a remote controller may include an input unit configured to receive a selection signal for controlling the display device, a first diverging unit emitting a color laser in one direction, and an infrared laser emitting unit parallel to the color laser; A second diverging part, a control button for turning on / turning off / holding the first diverging part and the second diverging part, respectively, and a display part displaying an image transmitted from the display apparatus.

In addition, the display control method of the display apparatus according to an embodiment of the present invention, photographing the front of the display device, when the user is included in the photographed image, according to the preference characteristic information corresponding to the user Outputting an image signal; and performing a control operation according to a designated position and a movement trajectory of the laser pointer when the photographed image includes a laser pointer facing the screen of the display device.

As described above, according to various embodiments of the present disclosure, the display apparatus may photograph a front image and perform a control operation using the image. Accordingly, the user's satisfaction can be improved.

1 is a block diagram showing a configuration of a display device according to an embodiment of the present invention,
2 to 4 are views for explaining an example of a process of recognizing a user in a display apparatus according to an embodiment of the present invention;
5 and 6 are views for explaining an example of a process of recognizing a movement trace of a laser pointer in a display device according to an embodiment of the present invention;
7 is a block diagram illustrating a configuration of a display apparatus according to various embodiments of the present disclosure;
8 is a view showing the configuration of a remote control according to an embodiment of the present invention, and
9 is a flowchart illustrating a display control method of a display apparatus according to an exemplary embodiment.

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

1 is a block diagram showing a configuration of a display device according to an embodiment of the present invention. According to FIG. 1, the display device includes a photographing unit 110, a control unit 120, a storage unit 130, and a display unit 140. The display device of FIG. 1 may be a TV, or may be various types of electronic devices such as a monitor, a PC, an electronic picture frame, a notebook PC, an e-book, and the like.

The photographing unit 110 is provided at one side of the display apparatus 100 to photograph the front of the display apparatus 100. The front of the display apparatus 100 refers to a direction toward the viewer viewing the screen of the display apparatus. For example, the photographing unit 110 may include at least one or more cameras installed on the upper side, the lower side, or the left and right sides of the screen. Accordingly, a user who uses or intends to use the display apparatus 100 or various objects placed in front of the display apparatus 100 may be photographed.

The display unit 140 is configured to output an image signal on the screen. Although the detailed configuration of the display unit 140 is not illustrated in FIG. 1, the display unit 140 may include a tuner unit (not shown), a signal processing unit (not shown), a display panel (not shown), a backlight unit (not shown), and the like. The same may include various configurations. Since each of these configurations is already known, a detailed description thereof will be omitted. However, the tuner unit may be included only when the display apparatus 100 is implemented as a broadcast receiving apparatus such as a TV. In addition, the tuner unit may be omitted if the display apparatus 100 reproduces and outputs the stored data.

The storage unit 130 is a component that stores various types of data and programs. For example, the storage 130 may store preference characteristic information matched for each user and control operation information matched for each motion. Here, the preference characteristic information may appear in various ways according to the embodiment. For example, the preference characteristic information may be channel information that has been most viewed for each user, that is, preference channel information having a high viewing frequency. Alternatively, it may be channel information that was last viewed for each user. In addition, it may be output state information set by each user, that is, volume state, color, brightness, contrast, screen size, language, resolution, sharpness, frequency information, and the like. As such, the preference characteristic information may be various information determined for each user.

The controller 120 performs various control operations by using the image photographed by the photographing unit 110.

In detail, when a user is included in the image photographed by the photographing unit 110, the controller 120 may control the display unit 140 to output an image signal according to preference characteristic information corresponding to the user. Can be. That is, if the user parsed from the image is A, the display unit 140 may be controlled to automatically tune and output channel "10" that A frequently watches. Alternatively, at least one piece of information such as volume, color, brightness, contrast, screen size, language, resolution, sharpness, frequency information, etc. set by A is read from the storage unit 130 to match the read information. The display unit 140 may be controlled to output an image signal. In this case, in the case of volume information or language, a speaker (not shown) or a voice processor (not shown) may be controlled.

Meanwhile, when the image captured by the photographing unit 110 includes a laser pointer that faces the screen of the display unit 140, the controller 120 may perform a control operation according to a specified position or a movement trajectory of the laser pointer. have. That is, the user may use a laser pointer to scan a laser on a specific area of the screen or take a motion of drawing a simple shape such as a circle. The controller 120 parses the image photographed by the photographing unit 110 to estimate a designated position of the laser pointer, or checks a movement trajectory and performs a control operation corresponding thereto. The control operation for each motion may be stored in advance in the storage 130. The operation of confirming the designated position or the movement trajectory of the laser pointer will be described in detail later.

2 is a diagram for describing an example of a process of recognizing a face of a user located in front of the display apparatus 100. As illustrated in FIG. 2, the photographing unit 110 is attached to one side of the display apparatus 100 to photograph a user in front of the display apparatus 100. Accordingly, the user 10 carrying the remote controller 20 may be photographed by the photographing unit 110. The captured image may be directly provided to the controller 120 or a parser (not shown) provided separately or stored in the storage unit 130.

The controller 120 or the parser may recognize the face of the user on the image in various ways. That is, the user recognition task may be performed by the controller 120 or may be performed by a parser provided separately. The parser may be provided inside the display apparatus 100 or may be performed by an external remote controller or an external server. In the present embodiment, a case in which the controller 120 parses an image will be described.

3 and 4 are diagrams for describing an example of a face recognition method of a user. According to FIG. 3, the controller 120 divides each image frame photographed by the photographing unit 120 into a plurality of blocks. Each block consists of n * m pixels. n and m are natural numbers and their values may be the same. The controller 120 may calculate an average of pixel values included in each of the divided blocks, or determine the largest value, the median value, the minimum value, and the like among the pixel values, and determine the determined value as a representative value of the corresponding block. Accordingly, if the representative values of the blocks exist within a predetermined error range and are arranged consecutively, the blocks are recognized as referring to the same object, and the corresponding blocks are divided into one group.

4 shows p (i, j), p (i + 1, j), p (i + 2, j), p (i + 3, j), p (i-1, j + 1), p ( i, j + 1), p (i + 1, j + 1), p (i + 2, j + 1), p (i + 3, j + 1), p (i-1, j + 2) , p (i, j + 2), p (i + 1, j + 2), p (i + 2, j + 2), p (i + 3, j + 2), p (i-1, j +3), p (i, j + 3), p (i + 1, j + 3), p (i + 2, j + 3), p (i + 3, j + 3), p (i- 1, j + 4), p (i, j + 4), p (i + 1, j + 4), p (i + 2, j + 4), p (i + 3, j + 4), p (i, j + 5), p (i + 1, j + 5), and p (i + 2, j + 5) may be divided into block groups corresponding to face regions. In this case, it may be determined whether the result corresponds to the face area by comparing the pixel value of the face part measured experimentally. That is, by averaging pixel values of a plurality of face photographs for each of a yellow race, a white race, and a black race, an average pixel value range may be obtained for each race. In this case, if it corresponds to the obtained average pixel value range, it may be recognized as a face area.

The controller 120 finds blocks corresponding to eyebrows, eyes, noses, and mouths in the blocks recognized as face regions, and then extracts facial features by checking the positions of the blocks on the entire face. Accordingly, it is determined who the user corresponds to the extracted facial feature.

Meanwhile, as another method, a face may be recognized according to the contents described in "Face Recognition System and Face Recognition Method" described in Korean Application No. 10-2010-0029526, and it may be determined who the user is.

Alternatively, a face may be recognized according to the contents described in "Object candidate region detection method and system in an image processing system" described in Korean Patent Application No. 10-2010-0048629 to determine who the user is.

As such, the controller 120 may determine the photographed user by using various methods. Accordingly, after reading the preference characteristic information corresponding to the determined user from the storage unit 130, the display unit 140 may be controlled to output according to the preference characteristic information.

The controller 120 may also determine a designated position or a movement trajectory of the laser pointer in the captured image.

5 is a diagram for describing an operation of controlling the display apparatus 100 using a laser pointer. According to FIG. 5, the photographing unit 110 provided at one side of the display apparatus 100 captures images of the front including the laser pointer 200. The laser pointer 200 may be provided in a remote controller for controlling the display apparatus 100 or may be a laser pointer provided separately.

The controller 120 may estimate the point indicated by the laser pointer on the screen by proportionally comparing the size of the image photographed by the photographing unit 110 to the size of the screen image of the display apparatus 100.

6 is a view for explaining an example of the point estimation method.

When the infrared laser is emitted from the laser pointer, the photographing unit 110 may recognize the position of the front end portion of the laser pointer from which the infrared laser is emitted. To this end, the infrared filter may be removed from the camera module included in the photographing unit 110. As a result, the infrared laser is not filtered and appears in the captured image.

In FIG. 6, the position k of the laser pointer in the captured image 30 is located a distance from the left image boundary, a distance from the right image boundary, and b away from the upper image boundary, and d from the lower image boundary. appear. The controller may estimate that the pointer designates (a ', c') coordinates based on the upper left corner in accordance with the size ratio between the screen image 40 and the captured image 30.

That is, assuming that the screen image has the same aspect ratio than the photographed image and is three times larger in size, if a and c are 2 cm and 4 cm, respectively, a 'and c' appear as 6 cm and 12 cm, respectively. Therefore, it can be estimated that the pointer designates a point 6 cm away from the left image boundary and 12 cm away from the upper image boundary on the screen.

The controller 120 may display a cursor at the estimated point. Accordingly, when the user moves the laser pointer, the cursor can be moved according to the moving distance and direction. In this case, even if the specified position of the laser pointer and the cursor display position do not exactly match, the user can visually check the cursor position corresponding to the laser pointer while moving the laser pointer to move the cursor to a desired area on the screen. have. Accordingly, when the cursor is located in a specific menu on the screen, the menu may be selected by pressing a selection button of a remote controller or inputting a voice command.

Alternatively, the controller 120 may check the movement trajectory of the laser pointer and perform a control operation corresponding to the trajectory. To this end, the storage unit 130 may store the control operation information for each laser pointer. For example, perform a power-on or power-off operation on a circle motion, and various controls such as channel up / down, volume up / down, and external input change for various motions such as V, U, N, M, and W. You can perform the operation. The movement trajectory of the laser pointer may be confirmed by comparing the display position of the laser pointer in successive image frames photographed by the photographing unit 110.

In the above, the embodiment in which the user face recognition and the laser pointer recognition are used together has been described, but in another embodiment, only the user face recognition may be performed or only the laser pointer recognition may be performed. In addition, the display apparatus 100 may be implemented to recognize the user's face in the external remote controller or device by transmitting the captured image to the external remote controller or other external device without directly recognizing the user's face. In addition, the user's face image may be provided to the external remote controller or other external device so that the user's face image may be confirmed by the external remote controller or the device.

FIG. 7 is a block diagram illustrating a configuration of a display apparatus for describing various exemplary embodiments as described above.

According to FIG. 7, the display apparatus includes a photographing unit 110, a controller 120, a storage 130, a display 140, a parser 150, and a communicator 160.

The parser 150 refers to a configuration for parsing an image photographed by the photographing unit 110 to detect a face image or a laser pointer position.

That is, in another embodiment of the present invention, the parser 150 may be separately provided instead of the controller 120 to detect the face image or the laser pointer position. Since the detection method is the same as that described with reference to FIGS. 2 to 6, the redundant description is omitted.

On the other hand, the communication unit 160 is a configuration for relaying communication with the external device. That is, according to another embodiment of the present disclosure, the controller 120 may transmit the image itself photographed by the photographing unit 110 to an external device. Here, the external device may be another device such as a remote controller or a server. Hereinafter, a case of transmitting to the remote controller will be described. The communication unit 160 may communicate with a remote controller or other external device according to a Bluetooth or Wireless LAN standard.

When the image photographed by the photographing unit 110 is transmitted to the remote controller, the remote controller may detect a face image of the user from the image. Since the detection method has been described in detail in the above-described part, redundant description will be omitted.

When the user's face image is detected and the user's identity is confirmed, the remote controller checks the preferred output information corresponding to the user in the storage provided in the remote controller itself. Accordingly, the control signal is generated to be output according to the corresponding preferred output information, and the control signal is transmitted to the display apparatus 100. Accordingly, the controller 120 may perform a control operation according to the control signal of the remote controller.

Meanwhile, according to another exemplary embodiment of the present disclosure, the communication unit 160 may transmit only the face image detected by the parser 150 or the controller 120 to the remote controller. Accordingly, the remote controller may be implemented to simply display the received face image on the self-equipped display screen to confirm whether the user is correctly recognized.

In FIG. 7, operations of components other than the parser 150, the communicator 160, and the controller 120 are the same as those described in the exemplary embodiment of FIG. 1, and thus descriptions thereof will not be repeated.

In addition, although FIG. 7 illustrates the display apparatus 100 including both the parser 150 and the communicator 160 in FIG. 7, only one of the parser 150 and the communicator 160 may be included. Of course you can.

8 is a view showing the configuration of a remote control according to an embodiment of the present invention.

According to FIG. 8, the remote controller includes an input unit 210, a first diverging unit 220, a second diverging unit 230, a control button 240, and a display unit 250.

The input unit 210 corresponds to various buttons normally provided on the remote controller. The input unit 210 may receive various selection signals for controlling the display device.

The first diverging unit 220 emits a color laser in one direction. The diverging direction may be the front end of the remote controller. The color laser is emitted to give visibility to the location that the user specifies.

The second diverging unit 230 emits an infrared laser in parallel with the color laser emitted from the first diverging unit. The infrared laser emitted from the second diverging unit 230 is photographed by the photographing unit 110 of the display apparatus 100. Accordingly, it is possible to determine what position the user has designated and how the user has taken the motion of moving the remote controller.

Meanwhile, the first diverging unit 220 and the second diverging unit 230 may not be used according to a user's selection. That is, when the remote controller uses only a normal remote controller function, it is not necessary to activate the first diverging unit 220 and the second diverging unit 230.

Accordingly, a control button 240 for controlling the first and second diverging units 220 and 230 may be separately provided.

The control button 240, the first button 241 to turn on the first diverging unit 220 to emit the color laser only in the push state, and once pushed on to turn on the first diverging unit 220 After holding the turn-on state and pushing once again, the second button 242 turns off the first diverging unit 220, and turns on the second diverging unit 230 only in the push state to emit the color laser. The third button 243, which is pushed once, turns on the second diverging unit 230 and then holds the turn-on state, and if pushed again, the fourth button 243 turns off the second diverging unit 230. Button 244 may be included.

The display unit 250 is a portion for displaying an image transmitted from the display device. That is, in the case of transmitting the face image from the display device, the face image received by the display unit 250 may be displayed.

The remote controller 200 may be an intelligent remote controller that can greatly increase the control convenience of a high specification display device such as a smart TV or an IP TV, compared to the existing remote controller. In particular, since two types of laser diodes having different wavelengths may be used to directly designate a screen and control the operation of the display apparatus 100, the interface satisfaction may be greatly improved. Thus, it is suitable for use as a game console and may be extended to means for computer interface in place of a mouse.

9 is a flowchart illustrating a display control method of a display apparatus according to an exemplary embodiment.

According to FIG. 9, when photographing is performed (S910), it is checked whether the user is included in the photographed image. Accordingly, if it is included (S920), the corresponding user is recognized and the preference characteristic information matching the user is checked. Then, the video signal is output according to the checked preference characteristic information (S940).

Also, it is checked whether the laser pointer is included in the captured image (S940). As a result of the check, if the laser pointer is included, an appropriate control operation is performed according to the position or movement trajectory of the laser pointer (S950).

Since the recognition method of the user and the recognition method of the laser pointer have been described above, the redundant description is omitted.

Meanwhile, although FIG. 9 illustrates an embodiment including both a user recognition and a laser pointer recognition step, as described above, in another embodiment of the present invention, only user recognition or laser pointer recognition may be performed. Of course.

The display control method according to various embodiments of the present disclosure described above may be implemented by program codes stored in various types of recording media and executed by a processor included in the display apparatus.

Specifically, the code for performing the above-described display control method may include random access memory (RAM), flash memory, read only memory (ROM), erasable programmable ROM (EPROM), electronically erasable and programmable ROM (EPROM), and registers. , A hard disk, a removable disk, a memory card, a USB memory, a CD-ROM, and the like, may be stored in various types of recording media readable by the terminal.

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 in form and details may be made therein without departing from the spirit and scope of the present invention.

110: recording unit 120: control unit
130: storage unit 140: display unit
150: parsing unit 160: communication unit

Claims (13)

In the display device,
A display unit which outputs an image signal on a screen;
A photographing unit which photographs the front of the display device;
A communication unit which transmits the image photographed by the photographing unit to a remote controller; And
And a controller configured to receive a control signal according to preference characteristic information of the user corresponding to the captured image from the remote controller and to control the display unit to output the image signal according to the control signal. The method of claim 1,
And a parser configured to detect a user image by parsing the image photographed by the photographing unit.
The communication unit transmits a user image detected by the parser to a remote controller. The method of claim 1,
The control unit,
And a laser pointer directed to the screen in the image photographed by the photographing unit, and performs a control operation according to a specified position or a movement trajectory of the laser pointer. The method of claim 3,
The control unit,
Detecting the position at which the infrared laser emitted from the laser pointer is displayed on the image photographed by the photographing unit, and estimating a point designated by the laser pointer on the screen according to a ratio between the size of the image and the size of the screen; Display device characterized in that. 5. The method of claim 4,
The control unit,
And displaying the cursor on the estimated point and controlling the display unit to move the cursor according to the movement trajectory of the laser pointer. 5. The method of claim 4,
Further comprising: a storage unit for storing the motion information,
The control unit,
When the position where the infrared laser emitted from the laser pointer is displayed is moved on the image photographed by the photographing unit, it is determined whether the movement trajectory matches the motion information stored in the storage unit, and when the match is matched, the control corresponding to the matched motion information Display device, characterized in that performing the operation. The method according to any one of claims 1 to 6,
The preference characteristic information is preference channel information with a high frequency of viewing by the user.
And the control unit controls the display unit to directly select and display a preferred channel corresponding to the preferred channel information. The method according to any one of claims 1 to 6,
The preference characteristic information is
At least one of a favorite channel information frequently watched by the user, the channel information last watched by the user, the volume state set by the user, color, brightness, contrast, screen size, language, resolution, sharpness, frequency information Display device. In the display device,
A display unit which outputs an image signal on a screen;
A photographing unit which photographs the front of the display unit;
A parsing unit for parsing an image photographed by the photographing unit to detect a user image;
A communication unit for transmitting a user image detected by the parser to a remote controller; And
And a control unit configured to receive a control signal according to preference characteristic information of the user corresponding to the user image from the remote controller and to control the display unit to output the image signal according to the control signal.
The preference characteristic information is
At least one of a favorite channel information frequently watched by the user, the channel information last watched by the user, the volume state set by the user, color, brightness, contrast, screen size, language, resolution, sharpness, frequency information Display device. In the display device,
A display unit which outputs an image signal on a screen;
A photographing unit which photographs the front of the display unit;
A storage unit which stores motion information of the laser pointer;
A parsing unit which parses an image photographed by the photographing unit and recognizes a laser pointer directed to the screen;
And a controller configured to, when the laser pointer is recognized, identify motion information corresponding to a specified position or movement trajectory of the laser pointer, and perform a control operation corresponding to the identified motion information.
The control unit,
In consideration of the ratio between the size of the screen and the size of the image taken by the photographing unit, the point designated by the laser pointer on the screen is estimated, the cursor is displayed on the estimated point, and the movement point of the laser pointer is And controlling the display unit to move a cursor. delete In the remote control for controlling a display device having a photographing unit,
An input unit to receive a selection signal for controlling the display device;
A first diverging unit which emits a color laser in one direction for giving visibility to a position designated by a user;
A second diverging unit which emits an infrared laser in parallel with the color laser, so that the photographing unit of the display device can determine a position designated by a user or a motion of the user;
A control button for turning on / turning off / holding the first diverging part and the second diverging part;
And a display unit which displays an image transmitted from the display device. In the display control method of the display device,
Photographing the front of the display device;
Transmitting an image photographed according to the photographing to a remote controller;
Receiving a control signal according to preference characteristic information of a user corresponding to the photographed image from the remote controller; And
And outputting an image signal according to the control signal.

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