KR20080070230A - Apparatus and method for expanding recognized size of content - Google Patents

Abstract

An apparatus and a method for expanding a sensed size of contents are provided to provide an expansion effect corresponding to the number of users by assigning a weight value to the rate of users who gather to view a screen to control blinking of light emitting elements. A location checking unit(310) checks a location of a user who views a screen. An analyzing unit(330) extracts an illumination angle and an illumination strength of one or more light emitting elements provided at edges of a display device according to the checked viewing location. A controller(340) controls the illumination angle and the illumination strength according to the extracted results. The location checking unit expands the sensed size of contents by determining the position of the user's eyes as the viewing location. If there are many users, the location checking unit determines the center of the positions of the users' eyes distributed by user groups as the viewing location according to a crowd degree of the users.

Description

Apparatus and method for expanding recognized size of content}

1 is a diagram illustrating an arrangement structure of a display apparatus and a light emitting device according to an exemplary embodiment of the present invention.

2A to 2C are diagrams illustrating a difference in perceptual size according to a viewing position of a user.

3 is a block diagram illustrating an apparatus for extending a perceptual size of content according to an embodiment of the present invention.

4 is a table illustrating a viewing position of a user according to an exemplary embodiment of the present invention.

FIG. 5 is a table illustrating illumination angles and illumination intensities according to enlarged perceptual errors according to an exemplary embodiment of the present invention. FIG.

6 is a diagram illustrating an arrangement structure of a display apparatus and a light emitting device according to another exemplary embodiment of the present invention.

7 is a view showing a light emitting device and a light refraction means according to an embodiment of the present invention.

8 is a view showing that the illumination angle is adjusted by the light refracting means according to an embodiment of the present invention.

9 is a flowchart illustrating a process of expanding the perceptual size of content according to an embodiment of the present invention.

<Explanation of symbols on main parts of the drawings>

310: location check unit 320: storage unit

330: analysis unit 340: control unit

350: light emitting unit 360: lighting angle adjusting unit

The present invention relates to an apparatus and method for extending the perceptual size of a content, and more particularly, to an apparatus for expanding the perceptual size of a content for controlling flickering of a plurality of light emitting elements provided at an edge of a display panel according to a user's position. And to a method.

Conventional analog TV broadcasting systems used worldwide vary depending on the scanning player, number of images transmitted per second, modulation method, channel bandwidth, video signal bandwidth, and audio channel modulation. Alternation Line) and SECAM (Sequentiel Couleur A Memoire).

On the other hand, there is digital TV (High Definition Television) technology, which is similar in quality to 35mm movies and the sound quality is similar to that of CD. Digital TV technology is a technology that receives and displays a digital signal instead of analog, and the digital signal is compressed and transmitted by the MPEG-2 method.

Digital broadcasting is transmitted in a 16: 9 aspect ratio, reflecting the fact that the human eye is more sensitive to the landscape than to the portrait. This is a form that is extended in the horizontal direction as compared to 4: 3, which is the aspect ratio of the conventional analog broadcast, and thus the viewer is mistaken that the screen is wider than the actual.

Digital TV technology, which provides about 5 times higher image quality than conventional analog broadcasting, that is, digital broadcasting is currently partially provided and coexists with analog broadcasting, but the area is continuously expanding.

As users' demand for high definition and screen size increases, the screen size, which was difficult to implement with conventional CRT (Cathode Ray Tube) technology, is implemented using liquid crystal display (LCD) or plasma display panel (PDP) technology. The company is also developing technologies using ELD (Electro Luminescent Display), VFD (Vacuum Fluorescent Display), LED (Light Emitting Diode) and FED (Field Emission Display).

On the other hand, a device that has a light emitting device such as an LED on the edge of the display panel to be perceived as the size of the screen is expanded, such a device that does not consider the position of the user looking at the screen, the flashing of the light emitting device To control. Thus, when the user looks at the screen from the side, the expansion effect is distorted and perceived by the user, so that the user cannot be provided with the correct expansion effect. Accordingly, there is a need for the emergence of an invention that provides a proper expansion effect regardless of the position of the user by controlling the blinking of the light emitting device according to the position of the user.

An object of the present invention is to provide a plurality of light emitting elements on the edge of the display panel and to control the blinking of each light emitting element according to the position of the user.

In addition, an object of the present invention is to control the blinking of the light emitting device by giving a weight to the ratio of the group of users when a plurality of users watching the screen.

In addition, an object of the present invention is to control the divergence direction of the light emitting device by giving a weight to the proportion of the user in the group when a plurality of users watching the screen.

The objects of the present invention are not limited to the above-mentioned objects, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the apparatus for expanding the perceptual size of the content according to an embodiment of the present invention is a positioning unit for confirming the viewing position of the user, and extracts the illumination angle and illumination intensity according to the confirmed viewing position An analysis unit and a control unit for controlling the illumination angle and the illumination intensity of the light emitting device provided on at least one edge of the display device according to the extracted result.

According to an aspect of the present invention, there is provided a method of expanding a perceived size of a content, including: checking a viewing position of a user, extracting an illumination angle and an illumination intensity according to the identified viewing position, and displaying the display according to the extracted result; Controlling the illumination angle and illumination intensity of at least one light emitting element provided at the edge of the device.

Specific details of other embodiments are included in the detailed description and the drawings.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

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

1 is a view illustrating an arrangement structure of a display apparatus and a light emitting device according to an exemplary embodiment of the present invention, in which a plurality of light emitting devices 110, 120, 130, and 140 are disposed at an edge of the display device 100. to be.

Here, the display apparatus 100 may display a cathode ray tube (CRT), a liquid crystal display (LCD), a light emitting diode (LED), and an organic light emitting diode capable of displaying an input image signal. As a device having an image display means such as an organic light-emitting diode (OLED) or a plasma display panel (PDP), the monitor may include a TV and a computer.

The light emitting devices 110, 120, 130, and 140 are disposed in close contact with the edges of the display device 100, and each side of the display device 100 may be provided with independent light emitting devices. In other words, each of the light emitting devices provided on the upper side, the lower side, the left side, and the right side of the display apparatus 100 may receive different control signals to determine whether the light is blinking and the illumination intensity.

As the light emitting device is turned on with the reproduction of the content, the user can perceive that the screen of the content is enlarged. That is, the user may sense that the display plane of the display apparatus 100 is enlarged by the lighting range of the light emitting element lit at the edge of the display apparatus.

On the other hand, in order to optimally provide the above-described enlarged perception to the user, the user should be positioned on a virtual line 250 (hereinafter, referred to as a first virtual line) perpendicular to the display plane with respect to the center of the display plane. If the user is not positioned on the first virtual line 250, since the distance between the viewing position of the user and each light emitting device is different, a distorted enlarged perception may be provided to the user.

2A to 2C are diagrams illustrating a difference in perceptual size according to the viewing position of the user, and FIG. 2A is a diagram illustrating a case where the user is positioned on the first virtual line 250. Here, the position of the user on the first virtual line 250 may be understood as the eyes of the user are positioned on the first virtual line 250. In more detail, the center of both eyes of the user may be defined. It can be understood to be located on one virtual line 250. That is, the viewing position described later means the center of both eyes of the user.

As the viewing position of the user is located on the first virtual line 250, the shape 200a of the light generated around the display apparatus 100 and detected by the user is uniformly along the edge of the display apparatus 100. Is formed. In other words, the width 210a of light emitted by the left side light emitting device 120 and sensed by the user and the width 220a of light emitted by the right side light emitting device 130 and sensed by the user are the same or similar. The width 230 of the light irradiated by the upper side light emitting device 110 and sensed by the user and the width 240 of the light irradiated by the lower side light emitting device 140 and sensed by the user are the same or similar. Will be. As shown in FIG. 2A, as the width of light generated by each light emitting element is uniformly detected, the user may sense a correct magnification perception.

On the other hand, as shown in FIG. 2B, when the viewing position of the user is changed, the shape of the light 200b generated around the display apparatus 100 and sensed by the user is unevenly formed along the edge of the display apparatus 100. 2B illustrates that the viewing position of the user is changed in the horizontal direction, and accordingly, the upper side light emitting element 110 is irradiated by the width 230 and the lower side light emitting element 140 irradiated by the user. The width 240 of light detected by the user is the same or similarly detected by the user, while the width 210b of the light emitted by the left side light emitting device 120 and sensed by the user 130 is detected by the user. The width 220b of light irradiated by the user and sensed by the user is differently detected by the user.

This is because the distance between the left side of the display apparatus 100 and the user (hereinafter referred to as the left side distance) is shorter than the distance between the right side of the display apparatus 100 and the user (hereinafter referred to as the right side distance) and the right side frame of the display apparatus 100. Because it is covered by, the width 210b of the light by the left side light emitting device 120 is detected to be larger than the width 220b of the light by the right side light emitting device 130.

As illustrated in FIG. 2B, the width of the light generated by each light emitting element is unevenly sensed, thereby preventing the user from detecting the correct magnification perception. Therefore, it is preferable to adjust the illumination intensity for each light emitting device according to the viewing position of the user, which is illustrated in FIG. 2C.

2C is a view showing that the illumination intensity is adjusted according to the user's position. Since the left side distance is shorter than the right side distance, the left side light emitting device 120 lowers the illumination intensity and increases the illumination intensity of the right side light emitting device 130 to emit light on the left side. The width 210c of the light emitted by the device 120 and the width 220c of the light emitted by the right-side light emitting device 130 are the same or similar to each other. As shown in FIG. 2C, by adjusting the illumination intensity of each light emitting device according to the viewing position of the user, the user senses that the widths 210c and 220c of the light formed by each light emitting device are uniform. The correct magnification can be detected.

On the other hand, when the number of users watching the content played by the display apparatus 100 is plural, simply adjusting the illumination intensity cannot satisfy the enlarged perception of all the users. It is preferred that they are formed differently. To this end, at least one or more users (hereinafter referred to as a user group) which are densely arranged with each other are regarded as one user, so that at least one light emitting element for a specific user group is assigned and light by the assigned light emitting element is The lighting angle may be determined to be irradiated to the corresponding user group.

In this case, the number of light emitting devices to be allocated may be determined according to the number of users included in the corresponding user group.

3 is a block diagram illustrating an apparatus for expanding a perceptual size of content according to an exemplary embodiment of the present invention, and the apparatus for expanding the perceptual size of content (hereinafter, referred to as a content apparatus) 300 is a positioning unit 310. , The storage unit 320, the analysis unit 330, the control unit 340, the light emitting unit 350 and the illumination angle control unit 360 is configured.

The location checker 310 checks the location of the user. In order to check the location of the user, the location checker 310 may analyze the input image or use infrared or ultrasonic waves.

In order to receive an image, the positioning unit 310 may be provided with an image input unit (not shown). The image input unit serves to receive an image. In other words, it receives an analog image. In order to receive an image, the image input unit 210 may be provided with an imaging device. As the imaging device, a charge-coupled device (CCD) or a complementary metal-oxide semiconductor (CMOS) may be used.

In addition, the image input unit may control the gain of the input image signal to amplify the input image signal by a predetermined amount so that the image signal may be easily processed at a later stage, and the image input unit may be amplified by providing a predetermined conversion unit (not shown). It is also possible to convert analog video signals to digital.

As the image is input by the image input unit, the location checker 310 checks the position of the user included in the input image. Here, the location checker 310 may check the location of the user through image processing such as edge detection or pattern recognition on the digital image generated by the image input unit.

In the present invention, the positioning unit 310 may regard the stationary user as a target, not the moving user, and perform the positioning thereof. In other words, the position of the user may be identified using one of the transmitted frames, that is, a still image, instead of performing positioning on all frames transmitted from the image input unit. Of course, the location checking unit 310 may perform the user's location checking on all the still images, that is, the moving images, according to the computing power.

As described above, the viewing position of the user may be understood as the center of both eyes of the user. In order to identify the center position of both eyes of the user, the positioning unit 310 may use infrared rays.

An infrared generating unit (not shown) may be provided in the positioning unit 310 to check the central position of both eyes of the user using infrared light.

The infrared rays generated by the infrared ray generator are reflected to the user's eyes and are incident on the image input unit. The positioning unit 310 simultaneously checks the position of the user's eyes by receiving the image and the infrared rays inputted through the image input unit. will be.

Here, the reason why infrared rays are used to check the position of the user's eyes is that the user's eyes effectively reflect the infrared rays. That is, when infrared rays are irradiated to the user, since the reflectance in the eye is large, the position of the reflected infrared rays may be regarded as the position of the user's eyes.

In addition, the use of reflected infrared light is more advantageous in terms of computation speed than using image processing technology such as face recognition, and therefore, it is preferable to check the position of the user's eyes using infrared light.

Here, an infrared filter (not shown) may be provided in the image input unit to receive the infrared rays reflected by the user's eyes.

On the other hand, when there are a plurality of users, the location checking unit 310 may determine the center of the eye position distributed by the user group composed of at least one user as the viewing position according to the degree of crowding of the users. For example, in the case where three users are densely positioned to form a user group, the positioning unit 310 checks the position of each user's eyes, and then the center of gravity of the triangle formed by the identified three positions. Alternatively, the center of the straight line is determined as the viewing position of the user group.

The analyzer 330 extracts an illumination angle and an illumination intensity of at least one light emitting device provided at an edge of the display apparatus 100 according to the viewing position identified by the position determiner 310. At this time, the analysis unit 330 is a virtual line perpendicular to the display plane with respect to the center of the display plane, that is, the virtual line connecting the center of the first virtual line 250 and the display plane and the viewing position (hereinafter, The lighting angle and the lighting intensity may be extracted with reference to the angle between the two virtual lines 260 and the length of the second virtual line 260. To this end, the analysis unit 330 is a table specifying a viewing position (hereinafter referred to as a first table) 400 and a table in which an illumination angle and an illumination intensity corresponding to the viewing position are specified (hereinafter referred to as a second table). Reference may be made to 500. A detailed description of the first table 400 and the second table 500 will be described later with reference to FIG. 4.

The first table 400 and the second table 500 may be stored in the storage unit 320. The storage unit 320 may include a hard disk, a flash memory, a compact flash card, and an SD card. Card, SM card (Smart Media Card), MMC (Multimedia Card) or memory stick (Memory Stick) module that can input and output information may be provided inside the content device 300, or in a separate device It may be. Here, when the storage unit 320 is provided in a separate device, the content device 300 may be provided with communication means for communicating with the separate device.

When the number of users watching the content is a plurality of user groups may be formed by the location check unit 310, the analysis unit 330 is adjusted to the illumination angle with reference to the number of users included in the user group The number of light emitting elements to be irradiated can be determined. That is, high weight is given to a user group having a large number of users and low weight is given to a user group having a small number of users.

The illumination angle, the illumination intensity, and the number of light emitting elements extracted by the analyzer 330 are transmitted to the controller 340.

The controller 340 controls the illumination angle and the illumination intensity of the light emitting device according to the result extracted by the analyzer 330. In order to control the illumination angle of the light emitting device, the controller 340 may adjust the angle of the light refraction means provided in front of the light emitting device. In other words, the controller 340 changes the posture of the light refraction means without changing the position or posture of the light emitting device so that the light generated by the light emitting device is refracted. The light may be refracted by the difference in the medium at the interface between the air and the light refraction means. In this case, the direction of irradiation of the light may be changed as the attitude of the light refraction means is changed.

In order to change the posture of the light refraction means may be provided with a transmission means such as a motor, for this purpose, the illumination angle adjusting unit 360 may be provided with a light refraction means and a transmission means. As a result, the control unit 340 transmits a control signal to the transmission means of the illumination angle adjustment unit 360, the transmission means to change the attitude of the optical refraction means in accordance with the received control signal.

In addition, the controller 340 may adjust the angles of the light refraction means individually provided with respect to at least one light emitting device for each light emitting device.

As shown in FIG. 6, a plurality of light emitting devices 600 may be disposed at the edge of the display device 100, and light emitted by each light emitting device may be adjusted to face different directions. In this case, the number of light emitting devices that emit light in a specific direction is determined by the analyzer 330 according to the number of users included in the user group.

For example, if the total number of light emitting elements is 20, the number of users existing in the first viewing position is 15, and the number of users present in the second viewing position is 5, 15 of all the light emitting elements are used to determine the first viewing position. Is determined to face, and the remaining five are determined to face the second viewing position. The controller 340 adjusts the angle of each optical refraction means with reference to the number of light emitting elements received from the analyzer 330. That is, the angle of the light refraction means is adjusted so that the light generated by the 15 light emitting elements is directed toward the first viewing position, and the light generated by the remaining five toward the second viewing position.

The light emitting unit 350 is composed of a plurality of light emitting elements to serve to flash the light emitting element or adjust the illumination intensity according to a control signal received from the controller 340. The light emitting device may include a liquid crystal display (LCD), a light-emitting diode (LED), an organic light-emitting diode (OLED), or a plasma display panel (PDP). Although it can be used as a material, it is preferable that the light emitting diode which is inexpensive and excellent in the luminous effect is used.

4 is a table (first table) for viewing locations of a user according to an exemplary embodiment of the present invention, and the viewing angle of the user with respect to the display device 100 having a screen size of 42 inches is determined by viewing angle ( 410, a distance 420 from the screen, a left enlarged perceptual length 430, a right enlarged perceptual length 440, a left enlarged perceptual angle 450, and a right enlarged perceptual angle 460.

The viewing angle 410 refers to an angle between the first virtual line 250 and the second virtual line 260. That is, it shows how much distorted position the user is in the first virtual line 250.

The distance 420 from the screen refers to the length of the second virtual line 260. That is, the distance between the viewing position and the center of the display plane is shown.

The left enlarged perceptual length 430 and the right enlarged perceptual length 440 mean a length detected by the user and recognized as enlarged. For example, when the user exists on the first virtual line 250 and the distance to the screen is 160 cm, the user recognizes that the left and right sides of the display plane are respectively enlarged by 10 cm. That is, the user recognizes that another plane exists on the left and right sides of the display plane. Hereinafter, the plane formed on the left side of the display plane is called the left enlarged perceptual plane, and the plane formed on the right side of the display plane is called the right enlarged perceptual plane.

The left enlarged perceptual angle 450 refers to an angle between the virtual line and the second virtual line 260 formed by connecting the viewing position of the user to the left end of the left enlarged perceptual plane, and the right enlarged perceptual angle 460 is viewed by the user. The angle between the virtual line and the second virtual line 260 formed by connecting the position to the right end of the right enlarged perceptual plane.

Data included in the first table 400 may be determined by experiment. That is, after having the at least one user watch the content played by the display apparatus 100 at a specific viewing position, the information sensed by each user is included in the first table 400.

Meanwhile, although the first table 400 illustrated in FIG. 4 includes only information on the left enlarged perception and the right enlarged perception, the first table 400 may also include information on the upper enlarged perception and the lower enlarged perception. Of course.

FIG. 5 is a view illustrating a table (second table) for illumination angles and illumination intensities according to enlarged perception errors according to an exemplary embodiment of the present invention, wherein the second table 500 has a screen size of 42 inches. ) And an illumination angle 520 and an illumination intensity 530 which should be adjusted according to the magnification perception error 510 and the magnification perception error 510 generated in the viewing state.

For example, if the magnification perception error is 1 cm, the illumination angle should be changed 5 degrees toward the user or user group, and the illumination intensity means that the two candelas should be increased or decreased.

The analyzer 330 may extract an illumination angle and an illumination intensity with reference to the first table 400 and the second table 500. That is, after substituting the viewing position identified by the positioning unit 310 into the first table 400 to calculate the enlarged perception error, the calculated perceptual error is substituted into the second table 500 to illuminate the illumination angle and illumination. To extract the intensity. Here, the enlarged perceptual error means a difference between the enlarged perceptual length at the reference position and the enlarged perceptual length at the distorted position. For example, looking at the first table 400, when the distance to the screen is 160 cm, the left enlarged perceptual length is 10 cm at the reference position, that is, the viewing angle is 0 degrees, while the viewing angle is -15 degrees. It can be seen that the left enlarged crust length is 7 cm. That is, the enlarged perception error at the position distorted at −15 degrees is 10 −7 = 3 cm.

The enlarged perceptual error calculated as described above may be substituted into the second table 500. When the enlarged perceptual error is 3cm, the illumination angle for adjusting the illumination perception is 8 degrees and the illumination intensity is 5 candelas. Indicates. That is, the analysis unit 330 extracts an illumination angle of 8 degrees and an illumination intensity of 5 candelas, and according to the combination of the extracted illumination angles and illumination intensities, the control unit 340 may control the illumination intensity and the light refraction means of the light emitting device. Adjust the angle of

The controller 340 may calculate the illumination intensity to be adjusted using the following equation.

I = w | I_ _D - I_ _A |

Here, I represents the illumination intensity to be adjusted, w represents the weight according to the user ratio, I_ _D represents the illumination intensity according to the enlarged perception error, and I_ _A represents the illumination intensity according to the illumination angle.

Suppose that the weight ratio is 0.4, the magnification error is 5, and the modified illumination angle is 8.

Here, since the magnification perception error is 5, referring to the second table 500, the illumination intensity at this time corresponds to 10. That is, the light intensity according to the perceived error expanding to a I_ _D = 10. In addition, since the illumination angle is 8 degrees, referring to the second table 500, the illumination intensity at this time corresponds to 5. That is, the illumination intensity I_ _A = 5 according to the illumination angle.

Therefore, if the value calculated with reference to the second table 500 is applied to Equation 1, I = 0.4 | 10-5 | Since = 2, the lighting intensity to be adjusted eventually is 2 candela. In other words, the controller 340 adjusts the illumination intensity of the light emitting device by adding or subtracting 2 candelas to the currently set illumination intensity.

Meanwhile, the first table 400 and the second table 500 may be separately configured as shown in FIGS. 4 and 5, or may be integrated into one table.

7 is a view showing a light emitting device and a light refraction means according to an embodiment of the present invention. As illustrated in FIG. 6, when the plurality of light emitting elements 600 are disposed at the edge of the display apparatus 100, the light refraction means 700 may be disposed in front of each light emitting element 600 to change the direction of emitted light.

That is, the light emitting device 600 is turned on or off at a specific illumination intensity according to the control signal received from the controller 340 without changing its posture and position, and the angle of light is changed by the light refraction means 700. will be.

The controller 340 may apply a control signal to the driving means provided in the illumination angle adjusting unit 360 to adjust the angle of the light refraction means 700.

8 is a view showing that the illumination angle is adjusted by the light refraction means 821, 822, 823, 824 according to an embodiment of the present invention, generated by a plurality of light emitting means (811, 812, 813, 814) It is a view showing that the angle of the light is changed by the light refraction means 821, 822, 823, 824 provided for each light emitting means (811, 812, 813, 814).

Here, the first light refraction means 821 and the third light refraction means 823 provided in front of the first light emitting means 811 and the third light emitting means 813 face the same direction, and the second light emitting means 812 And the second light refraction means 822 and the fourth light refraction means 824 provided in front of the fourth light emitting means 814 face the same direction.

The analysis unit 330 extracts the number of light emitting devices to change the illumination angle with reference to the number of users included in the user group, and the control unit 340 is a posture according to the number of light emitting devices received from the analysis unit 330. Determine the light refraction means to change the and change its posture.

9 is a flowchart illustrating a process of expanding the perceptual size of content according to an embodiment of the present invention.

In order to expand the perceptual size of the content, the positioning unit 310 of the content device 300 first checks the location of the user (S910). Here, the location of the user may be understood as the center of both eyes of the user as the above-described viewing position. In order to confirm the location of the eyes of the user, the location checker 310 may use the input image and the infrared light.

In checking the viewing position, the location checking unit 310 may check the number of users. Thus, by checking whether the number of users is plural (S920) and when there is only one user, the analysis unit 330 refers to the first table 400 to calculate an enlarged perceptual error (S960), and calculates the second table 500. An illumination angle and an illumination intensity corresponding to the enlarged perceptual error calculated by referring to the extracted information are extracted (S970).

Then, the illumination angle and the illumination intensity extracted by the analysis unit 330 is transmitted to the control unit 340, the control unit 340 transmits a control signal to the light emitting unit 350 to adjust the light intensity of the light emitting device, The control signal is transmitted to the lighting angle controller 360 to change the lighting angle (S980).

On the other hand, when there are a plurality of users, the location checking unit 310 forms a user group composed of at least one user according to the degree of crowding of the user (S930), and refers to the location of the eyes of the user included in the user group. The center coordinates of the group are extracted (S940).

The analyzer 330 determines the number of light emitting devices to be irradiated by adjusting an illumination angle for each user group by referring to the number of users included in the user group (S950).

The analyzer 330 calculates an enlarged perceptual error with reference to the first table 400 (S960), and calculates an illumination angle and an illumination intensity corresponding to the enlarged perceptual error calculated with reference to the second table 500. Extract (S970).

The extracted illumination angle, the illumination intensity, and the number of light emitting elements for each user group are transmitted to the controller 340, and the controller 340 transmits a control signal to the light emitter 350 to adjust the light intensity of the light emitting elements and to illuminate The control signal is transmitted to the angle adjuster 360 so that the attitude of the light refraction means is changed to adjust the illumination angle by the number of light emitting elements assigned to each user group (S980).

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

According to the apparatus and method for expanding the perceptual size of the content of the present invention as described above has one or more of the following effects.

First, there is an advantage of providing a correct expansion effect to the user by providing a plurality of light emitting elements on the edge of the display panel and controlling the blinking of each light emitting element according to the position of the user.

Second, when a plurality of users are watching the screen, weights are given to the percentage of the crowded users to control the blinking of the light emitting device, thereby providing an expansion effect corresponding to the number of users.

Third, the present invention also provides a correct expansion effect to a plurality of users by controlling the divergence direction of the light emitting device by weighting the ratio of the crowded users when the plurality of users gaze at the screen.

Claims (19)

A position checking unit for checking a viewing position of the user; An analysis unit extracting an illumination angle and an illumination intensity of at least one light emitting device provided at an edge of a display device according to the identified viewing position; And a control unit for controlling an illumination angle and an illumination intensity of the light emitting device according to the extracted result. The method of claim 1, And the positioning unit extends the perceptual size of the content that determines the position of the eye of the user as the viewing position. The method of claim 1, The location checking unit may be configured to expand the perceived size of the content determining the center of the eye position distributed by the user group composed of at least one user as the viewing position according to the density of the user when the number of users is plural. Device. The method of claim 3, wherein And the analyzing unit is configured to expand the perceptual size of content for determining the number of light emitting elements to be irradiated by adjusting the illumination angle with reference to the number of users included in the user group. The method of claim 1, The analyzer may determine an angle between the first virtual line perpendicular to the display plane and the second virtual line connecting the center of the display plane and the viewing position with respect to the center of the display plane of the display device, and the length of the second virtual line. A device for expanding the perceptual size of the content to extract the illumination angle and the illumination intensity by reference. The method of claim 5, And the analyzing unit expands the perceptual size of the content extracting one of a combination of illumination angles and illumination intensities specified in a predetermined table in response to different combinations of the distance and the angle. The method of claim 6, And a storage unit for storing the table. The method of claim 1, And the controller is configured to expand the perceptual size of the content controlling the illumination angle by adjusting the angle of the light refraction means provided in front of the light emitting element. The method of claim 8, The control unit extends the perceptual size of the content for adjusting the angle of the optical refraction means provided for each of the at least one light emitting device for each light emitting device. The method of claim 8, And the analyzing unit expands the perceptual size of the content determining the number of the light emitting elements to be irradiated with the illumination angle adjusted by the light refraction means when the number of the user is plural. Checking a viewing position of the user; Extracting an illumination angle and an illumination intensity of at least one light emitting device provided at an edge of a display device according to the identified viewing position; And controlling an illumination angle and an illumination intensity of the light emitting device according to the extracted result. The method of claim 11, Identifying the viewing position comprises determining the position of the eye of the user as the viewing position. The method of claim 11, The determining of the viewing position may include determining, as the viewing position, the center of the eye position distributed by a user group composed of at least one user according to the density of the user when the number of users is plural. How to extend the perceptual size of content. The method of claim 13, And determining the number of the light emitting elements to be irradiated with the illumination angle adjusted by referring to the number of users included in the user group. The method of claim 11, The extracting of the illumination angle and the illumination intensity may include an angle between a first virtual line perpendicular to the display plane and a second virtual line connecting the center of the display plane and the viewing position with respect to the center of the display plane of the display device. And extracting the illumination angle and the illumination intensity with reference to the length of the second virtual line. The method of claim 15, Extracting the illumination angle and illumination intensity comprises extracting one of the combinations of illumination angles and illumination intensities specified in a predetermined table corresponding to different combinations of the distance and the angle. Way. The method of claim 11, And controlling the illumination angle comprises adjusting the angle of the light refraction means provided in front of the light emitting element. The method of claim 17, And adjusting the angles of the light refraction means, which are individually provided with respect to the at least one light emitting element for controlling the illumination angle, for each light emitting element. The method of claim 17, And determining the number of the light emitting elements to be irradiated with the illumination angle adjusted by the light refraction means when the number of users is plural, the distribution ratio of the users.

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