WO2021054696A1 - Dispositif d'affichage, serveur, et procédé de correction de dispositif d'affichage - Google Patents

Dispositif d'affichage, serveur, et procédé de correction de dispositif d'affichage Download PDF

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Publication number
WO2021054696A1
WO2021054696A1 PCT/KR2020/012431 KR2020012431W WO2021054696A1 WO 2021054696 A1 WO2021054696 A1 WO 2021054696A1 KR 2020012431 W KR2020012431 W KR 2020012431W WO 2021054696 A1 WO2021054696 A1 WO 2021054696A1
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WIPO (PCT)
Prior art keywords
display
display device
information
image
correction
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PCT/KR2020/012431
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English (en)
Korean (ko)
Inventor
김광민
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삼성전자주식회사
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Publication of WO2021054696A1 publication Critical patent/WO2021054696A1/fr

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2003—Display of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/02—Networking aspects
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/16—Use of wireless transmission of display information

Definitions

  • the disclosed invention relates to a display device including a plurality of display panels, a server for managing such a display device, and a method of correcting the color or brightness of the display device.
  • a display device including a plurality of display panels is a device that displays one image by combining images output from each display panel, such as a multivision system, video wall, signage, etc. It can be referred to by various names.
  • Such a display device may display one source image by outputting a plurality of partial images constituting one source image through a plurality of display panels, respectively.
  • a plurality of display panels which are physically separate devices, each have independent characteristics. Accordingly, color deviation may occur between a plurality of display panels.
  • the disclosed invention provides a display device, a server, and a method of calibrating a display device that can conveniently perform color correction using a mobile device without connecting additional equipment.
  • a display device includes a plurality of display panels; A plurality of module controllers respectively controlling the plurality of display panels; And a communication unit that communicates with the server; wherein, when a command for color correction is input, the plurality of module controllers are configured to adjust a setting pattern including setting information of the display panel and a white balance.
  • a white image to be used is controlled to be displayed, and when the communication unit receives correction information for compensating for color deviation between the plurality of display panels from the server, the setting information is adjusted based on the received correction information.
  • the setting information may include at least one of an RGB gain value, an RGB offset value, and a brightness value of a light source.
  • the communication unit may include a plurality of communication units respectively corresponding to the plurality of display panels.
  • the plurality of communication units may each receive correction information for a corresponding display panel.
  • Each of the plurality of module controllers may adjust the setting information based on correction information for a display panel controlled by the plurality of module controllers.
  • the server includes: a communication unit configured to receive an image of a display device or information about an image of the display device, which has captured a display device including a plurality of display modules from a mobile device; And generating correction information for compensating for color deviation between the plurality of display modules based on information on the image of the display device and setting information of each of the plurality of display modules, and the communication unit displays the correction information. It includes; a control unit for controlling the transmission to the device.
  • the information on the image of the display device may include at least one of a plurality of color coordinate values respectively corresponding to the plurality of display modules and a plurality of luminance values respectively corresponding to the plurality of display modules.
  • the communication unit may receive setting information of each of the plurality of display modules from the mobile device.
  • the controller When the communication unit receives the image of the display device from the mobile device, the controller recognizes a plurality of setting patterns from the received image of the display device, and Setting information can be obtained.
  • the controller may obtain information about the image of the display device from the received image of the display device.
  • the controller may generate correction information for each of the plurality of display modules based on information about the image of the display device, target image information, and setting information of each of the plurality of display modules.
  • the setting information includes at least one of an RGB gain value, an RGB offset value, and a brightness value of a light source
  • the correction information includes a correction value for an RGB gain, an RGB offset. It may include at least one of a correction value for and a correction value for brightness of the light source.
  • the controller may calculate a correction value for an RGB gain of each of the plurality of display modules based on the plurality of color coordinate values, target color coordinate values, and RGB gain values included in the setting information.
  • the communication unit may receive an illuminance sensor value from the mobile device.
  • the control unit sets a target luminance value based on the received illuminance sensor value, and a plurality of display modules based on the target luminance value, the plurality of luminance values, and brightness values of a plurality of light sources included in the setting information A correction value for the brightness of each light source can be calculated.
  • the control unit may obtain distance information between the viewers of each of the plurality of display modules based on the image of the display device.
  • the controller sets a target luminance value based on distance information from the viewer, and a plurality of display modules based on the target luminance value, the plurality of luminance values, and luminance values of a plurality of light sources included in the setting information.
  • a correction value for the brightness of each light source can be calculated.
  • the correction information includes a plurality of set of correction values for each of the plurality of display modules, and the controller may control the communication unit to transmit a set of correction values for each to the plurality of display modules.
  • the information on the image of the display device may include at least one of a plurality of color coordinate values respectively corresponding to the plurality of display modules and a plurality of luminance values respectively corresponding to the plurality of display modules.
  • Recognizing the setting pattern to obtain the setting information may further include.
  • the generating of the correction information includes generating correction information for each of the plurality of display modules based on information about the image of the display device, target image information, and setting information of each of the plurality of display modules; can do.
  • the setting information includes at least one of an RGB gain value, an RGB offset value, and a brightness value of a light source
  • the correction information includes a correction value for an RGB gain, an RGB offset. It may include at least one of a correction value for and a correction value for brightness of the light source.
  • Generating the correction information may include setting a target luminance value based on the received illuminance sensor value, and based on the target luminance value, the plurality of luminance values, and luminance values of a plurality of light sources included in the setting information. It may include; calculating a correction value for the brightness of the light source of each of the plurality of display modules.
  • Generating the correction information may include acquiring distance information from the viewers of each of the plurality of display modules based on the image of the display device.
  • Generating the correction information may include setting a target luminance value based on distance information from the viewer, and based on the target luminance value, the plurality of luminance values, and luminance values of a plurality of light sources included in the setting information. It may include; calculating a correction value for the brightness of the light source of each of the plurality of display modules.
  • color correction can be conveniently performed using a mobile device without connecting separate equipment.
  • FIG. 1 is an external view illustrating an example of a display device according to an exemplary embodiment.
  • FIG. 2 is a diagram illustrating an example of an image displayed on a display device according to an exemplary embodiment.
  • FIG. 3 is a diagram schematically illustrating a process of performing color correction by a display device and a server according to an exemplary embodiment.
  • FIG. 4 is a control block diagram of a display device according to an exemplary embodiment.
  • FIG. 5 is a diagram illustrating an example of an image displayed on a display device according to an exemplary embodiment for color correction.
  • FIG. 6 is a diagram illustrating an example of information included in a setting pattern displayed on a display device according to an exemplary embodiment.
  • FIG. 7 and 8 are diagrams illustrating a mobile device photographing a display device according to an exemplary embodiment.
  • FIG. 9 is a control block diagram of a server according to an embodiment.
  • FIG. 10 is a table showing an example of image information used by a server to generate correction information according to an embodiment.
  • FIG. 11 is a diagram illustrating an image of a display device received by a server according to an exemplary embodiment divided into a plurality of regions.
  • FIG. 12 is a table showing an example of correction information for luminance generated by a server according to an embodiment.
  • FIG. 13 and 14 are diagrams for explaining an operation in which a server obtains distance information between a display device and a viewer according to an exemplary embodiment.
  • 15 is a table showing an example of correction information for an RGB gain generated by a server according to an embodiment.
  • 16 is a table showing an example of correction information for one display module generated by a server according to an embodiment.
  • 17 and 18 are flowcharts illustrating a method of calibrating a display device according to an exemplary embodiment.
  • a component transmits or transmits a signal or data to another component
  • ordinal numbers such as “first” and “second” are for distinguishing a plurality of elements or information from each other, and do not define an order between them.
  • an identification code is used to identify each step and does not describe the order of each step, and each step may be implemented differently from the specified order unless a specific order is clearly stated in the context.
  • FIG. 1 is an external view illustrating an example of a display device according to an exemplary embodiment
  • FIG. 2 is a diagram illustrating an example of an image displayed on a display device according to an exemplary embodiment.
  • a display device 1 may include a plurality of display modules 100. As shown in FIG. 1, a plurality of display modules 100 may be arranged in two dimensions or may be arranged in one dimension.
  • the display device 1 may be managed by a server 200 connected wirelessly.
  • the plurality of display modules 100 may independently display an image.
  • a plurality of images displayed by the plurality of display modules 100 may be combined to implement one image.
  • the plurality of display modules 100 may each display independent images. In this case, the same image or different images may be displayed.
  • the first display module 100-1, the second display module 100-2, the third display module 100-3, and the fourth display module 100-4 in a clockwise direction.
  • the first display module 100-1, the second display module 100-2, the third display module 100-3, and the fourth display are The source image may be delivered according to a loop-out method or a daisy-chain method according to the order of the module 100-4.
  • the first display module 100-1 displays a first partial image I 1 allocated to itself among all source images
  • the second display module 100-2 displays a second partial image I 1 allocated to itself among all source images.
  • a partial image (I 2 ) is displayed
  • the third display module (100-3) displays a third partial image (I 3 ) allocated to itself among all the source images
  • the fourth display module (100-4) A fourth partial image (I 4 ) allocated to itself among all the source images may be displayed.
  • each display module may enlarge and display a source image to display a partial image allocated to it.
  • This type of display device 1 can be referred to by various names such as multi-vision system, video wall, and signage, and can be used for various purposes such as billboards, information boards, and billboards used indoors or outdoors while implementing a large screen. have. Regardless of what name it is referred to and for what purpose, any display device including a plurality of display modules may be the display device 1 according to an exemplary embodiment.
  • a display device in which a total of four display modules are arranged in a 2x2 matrix is exemplified, but this is only an example applicable to the display device 1, and the display module included in the display device 1
  • the number of display modules may be one or more, and in the case of two or more, the arrangement may be one-dimensional or two-dimensional.
  • FIGS. 1 and 2 a display device in which a total of four display modules are arranged in a 2x2 matrix as shown in FIGS. 1 and 2 will be described as an example for detailed description.
  • Each of the plurality of display modules 100-1, 100-2, 100-3, and 100-4 includes a display panel that displays an image and a controller that controls the display panel. Since the characteristics of the display panels included in each of the plurality of display modules 100-1, 100-2, 100-3, and 100-4 are different, even if the same color is displayed, the color actually displayed to the viewer may be different for each display panel. The color deviation between the display panels causes the quality of the image to deteriorate. Accordingly, the display device 1 and the server 200 according to an exemplary embodiment perform correction to compensate for color deviation between display panels.
  • FIG. 3 is a diagram schematically illustrating a process of performing color correction by a display device and a server according to an exemplary embodiment.
  • 1 display device 1 includes a setting pattern and white balance including setting information of a corresponding display module in each of a plurality of display modules 100-1, 100-2, 100-3, and 100-4. Displays the white image used for adjustment.
  • the setting information of the display module means setting information of the display panel included in the display module.
  • the display device 1 can adjust the setting information based on the received correction information.
  • color correction of the display device can be performed without connecting complex equipment to the display device for color correction of the display device such as a separate PC, camera equipment, and cables, and the display device without calling a professional engineer.
  • the administrator of the company can easily perform color correction.
  • each operation performed by the display device 1 and the server 200 will be described in detail.
  • FIG. 4 is a control block diagram of a display device according to an exemplary embodiment.
  • the display device 1 may include n number of display modules 100-1, ... 100 -n.
  • n represents an integer of 2 or more.
  • Each display module 100 includes a communication unit 110 that communicates with a server, a display panel 130 that displays an image, and a module controller 120 that controls the display panel 130, and the module controller 120
  • the display panel 130 controls the display panel 130 to display a setting pattern including setting information of the display panel and a white image used for white balance adjustment
  • the communication unit 110 transmits the display panel from the server 200 to the display panel.
  • setting information is adjusted based on the received correction information.
  • the communication unit 110 may exchange data with the server 200 through various wireless communication methods. For example, correction information for the corresponding display panel 130 may be received, and the communication unit 110 of the first display module 100-1 is a display included in the first display module 100-1. Receives correction information for the panel 130, and the communication unit 110 of the n-th display module 100-n receives correction information for the display panel 130 included in the n-th display module 100-n can do.
  • the module controller 120 may include at least one memory 121 in which a program for performing the above-described operation and an operation described later is stored, and at least one processor 122 for executing the stored program.
  • at least one memory 121 may store data necessary to perform the above-described operation and the following-described operation.
  • unique information of the display module 100 may be stored in at least one memory 121.
  • At least one memory 121 and at least one processor 122 may be integrated on one chip or may be physically separated.
  • the display panel 130 may employ one of various types of panels such as an LCD panel and an LED panel.
  • an LCD panel when the display panel 130 employs an LCD panel, it may include a liquid crystal panel and a backlight unit including a light source.
  • an LED light source when the display panel 130 employs an LED panel, an LED light source may be provided in each of a plurality of pixels constituting the display panel 130.
  • the module controller 120 included in the plurality of display modules 100-1, ..., 100-n may each perform the above-described operation to adjust setting information of the display panel 130 that it controls, When color correction is performed in this manner, color deviation between the display panels 130 included in the plurality of display modules 100-1, ..., 100-n may be compensated.
  • FIG. 5 is a diagram illustrating an example of an image displayed on a display device according to an exemplary embodiment for color correction
  • FIG. 6 is a diagram illustrating an example of information included in a setting pattern displayed on the display device according to an exemplary embodiment. .
  • the plurality of display modules 100-1, 100-2, 100-3 and 100-4 each includes a setting pattern ( P1, P2, P3, P4) and a white image (I W ) used for white balance adjustment can be displayed.
  • the white image I W is an image in which a plurality of pixels constituting the display panel 130 display a white color.
  • the color correction mode of the display device 1 may be activated by input of a color correction command, and the color correction command may be input from a user through an input device of the display device 1 such as a remote controller.
  • the setting information of the display panel 130 may include a setting parameter related to color or brightness and a parameter value thereof, for example, at least one of an RGB gain value, an RGB offset value, and a brightness value of a light source. It can contain one.
  • the setting pattern may further include unique information of the corresponding display module 100.
  • the unique information of the display module 100 may include at least one of identification information of the display module 100, an IP address, a location in the display device 1, and whether or not a video wall mode is set. have.
  • the module controller 120 generates a setting pattern including setting information of the display panel 130 described above, or including setting information of the display panel 130 and unique information of the display module 100, and the generated setting pattern
  • the display panel 130 may be controlled to display.
  • the setting pattern may be any one capable of displaying various information according to certain rules such as a QR code and a barcode, and the display device 1 according to an exemplary embodiment does not place any limitation on the type of the displayed setting pattern.
  • Each of the plurality of display modules 100-1, 100-2, 100-3, and 100-4 may generate a setting pattern according to the above-described method.
  • identification information of the second display module 100-2 IP address
  • It may include setting information of the panel 130.
  • the brightness value of the light source is a relative value selected from 0 to 100, and the brightness when the light source is turned off is set to 0, and the brightness when the brightness of the light source is maximized is set to 100.
  • the module controller 120 of the first display module 100-1 includes identification information of the first display module 100-1, an IP address, whether the video wall mode is set, and a location within the display device 1 Generating the first setting pattern P1 including the unique information of the first display module 100-1 including the setting information for the display panel 130 including the gain value of each RGB and the brightness value of the light source Then, the display panel 130 of the first display module 100-1 may be controlled to display the generated first setting pattern P1.
  • the module controller 120 of the third display module 100-3 includes identification information of the third display module 100-3, an IP address, whether or not a video wall mode is set, and a location within the display device 1.
  • Generating a third setting pattern P3 including setting information for the display panel 130 including unique information of the third display module 100-3 including RGB gain values and brightness values of light sources Then, the display panel 130 may be controlled to display the generated third setting pattern P3.
  • the module controller 120 of the fourth display module 100-4 includes identification information of the fourth display module 100-4, an IP address, whether the video wall mode is set, and a location within the display device 1.
  • Generating a fourth setting pattern P4 including setting information for the display panel 130 including unique information of the fourth display module 100-4 including a gain value of each RGB and a brightness value of a light source Then, the display panel 130 may be controlled to display the generated fourth setting pattern P4.
  • FIG. 7 and 8 are diagrams illustrating a mobile device photographing a display device according to an exemplary embodiment.
  • the white image I W and the setting patterns P1, P2, P3 are included in the plurality of display modules 100-1, 100-2, 100-3, and 100-4 included in the display device 1.
  • P4 is displayed, as shown in FIG. 7, the user can take a picture of the display device 1 using a camera mounted on the mobile device 300.
  • the user may be an administrator of the display device 1 or a professional engineer.
  • the mobile device 300 may be a device equipped with a camera, such as a smartphone, a tablet PC, or a PDA, and performing wireless communication with the server 200.
  • the image I D of the display device captured by the mobile device 300 may be transmitted to the server 200.
  • the mobile device 300 may transmit only the image I D of the display device, but as shown in FIG. 8, the mobile device 300 may transmit a plurality of setting patterns P1 and P2. , P3, P4) can be recognized, and the setting information and unique information included in a plurality of setting patterns (P1, P2, P3, P4) can be transmitted to the server 200 together with the image (I D) of the display device. Do. In this case, a QR code or barcode recognition function mounted on the mobile device 300 may be used.
  • the mobile device 300 may analyze the image (I D) of the display device, and transmits the information about the image (I D) of the display device to the server 200.
  • the information on the image of the display device may include at least one of a color coordinate value and a luminance value of the image I D of the display device.
  • image information information about an image of a display device will be referred to as image information. Details will be described in an embodiment of the server 200.
  • FIG. 9 is a control block diagram of a server according to an embodiment.
  • the server 200 is a communication unit receives information, that is, image information on the image (I D) of the image (I D) or a display device of the display device from the mobile device 300 A plurality of display modules 100 based on the image 210 and the image I D or image information of the display device and the setting information of each of the plurality of display modules 100-1, 100-2, 100-3, and 100-4. -1, 100-2, 100-3, 100-4), a control unit 220 that generates correction information for compensating for color deviation, and controls the communication unit 110 to transmit the correction information to the display device 1 ).
  • the communication unit 210 may exchange data with the mobile device 300 and the display device 1 by employing one of various wireless communication methods.
  • the communication method used to exchange data with the mobile device 300 and the communication method used to exchange data with the display device 1 may be the same or different.
  • the controller 220 includes at least one memory 221 in which a program for performing the above-described operation and an operation described later is stored, and at least one processor 222 for executing the stored program.
  • data necessary for performing the above-described operation and the following-described operation may be stored non-temporarily or temporarily in the at least one memory 121.
  • At least one memory 121 and at least one processor 122 may be integrated on one chip or may be physically separated.
  • the controller 220 of the server 200 receives from the image I D of the display device received from the mobile device 300. Recognizing a plurality of setting patterns P1, P2, P3, P4 respectively corresponding to the plurality of display modules 100-1, 100-2, 100-3, and 100-4, and the recognized plurality of setting patterns P1 , P2, P3, P4), setting information and unique information for each of the plurality of display modules 100-1, 100-2, 100-3, and 100-4 may be obtained.
  • the mobile device 300 may transmit setting information and unique information acquired through pattern recognition to the server 200.
  • the control unit 220 of the server 200 uses the setting information of each of the plurality of display modules 100-1, 100-2, 100-3, and 100-4 received from the mobile device 300 to generate correction information. I can.
  • FIG. 10 is a table showing an example of image information used by a server to generate correction information according to an embodiment
  • FIG. 11 is a table showing an image of a display device received by the server according to an embodiment. It is a drawing.
  • the plurality of display modules 100-1, 100-2, 100-3, and 100-4 included in the display device 1 each display a white image I W for white balance adjustment.
  • the image I D of the display device captured by the mobile device 300 may include a white image I W displayed on each of the plurality of display modules 100-1, 100-2, 100-3, and 100-4.
  • the white image included in the image I D of the display device may be viewed as a white image displayed to the viewer.
  • information about the image I D of the display device for example, the color coordinate value and the luminance value of the image I D of the display device as shown in FIG. 10 are the color coordinate values and luminance values of the white image displayed to the viewer. It can be seen as representing a value.
  • CIE xy color coordinates were used.
  • the control unit 220 analyzes the image I D of the display device to analyze information about the image of the display device, that is, color coordinates. Value and luminance value can be obtained.
  • the color coordinate value and the luminance value will be referred to as an image information value set.
  • controller 220 may obtain a plurality of image information value sets corresponding to the plurality of display modules 100-1, 100-2, 100-3, and 100-4, respectively.
  • a boundary B between the plurality of display modules 100-1, 100-2, 100-3, and 100-4 is displayed on the image I D of the display device.
  • the controller 220 recognizes this boundary from the image I D of the display device and includes a first area I D -1 including a white image I W displayed by the first display module 100-1, a second display module 100-2 is displayed, a second region that contains a white image (I W) (D I -2), a third display module (100-3) is a white image (I W) displayed
  • the included third area I D -3 and the fourth area I D -4 including the white image I W displayed by the fourth display module 100-4 may be distinguished, respectively.
  • the controller 220 analyzes the image I D of the display device to obtain a set of image information values for each of the plurality of regions I D -1, I D -2, I D -3, and I D -4.
  • I can.
  • the image information value set for the first region I D -1 is an image information value set corresponding to the first display module 100-1
  • the image information value set for the second region I D -2 is The image information value set corresponding to the second display module 100-2
  • the image information value set for the third area I D -3 is an image information value set corresponding to the third display module 100-3
  • the image information value set for the fourth area I D -4 is an image information value set corresponding to the fourth display module 100-4.
  • the set of image information values corresponding to the display module may represent a set of image information values of a white image displayed by the display module.
  • the mobile device 300 may perform the above-described analysis and transmit information about the image of the display device as illustrated in FIG. 10 to the server 200.
  • the luminances of images that are actually displayed may be different from each other. This difference in color coordinates or luminance is referred to as color deviation.
  • the controller 220 provides correction information based on information about the image of the display device and setting information of each of the plurality of display modules 100-1, 100-2, 100-3, and 100-4. Can be created.
  • target image information such as target color coordinates and target luminance may be considered.
  • the correction information may include at least one of a correction value for RGB gain, a correction value for RGB offset, and a correction value for brightness of a light source.
  • FIG. 12 is a table showing an example of correction information for luminance generated by a server according to an embodiment.
  • the illuminance sensor value may be transmitted together.
  • the illuminance sensor value transmitted by the mobile device 300 may be an illuminance value measured by an illuminance sensor built in the mobile device 300. Accordingly, the illuminance sensor value transmitted from the mobile device 300 may represent illuminance of a space in which the display device 1 is located.
  • the controller 220 may set the target luminance based on the transmitted illuminance sensor value.
  • the controller 220 may set the target luminance in consideration of visibility of the display device 1 in a space where the display device 1 is located.
  • the target luminance may be set as a multiple of the illuminance sensor value, and as shown in FIG. 12, when the illuminance sensor value is 200 nit, the target luminance may be set to 400 nit, which is twice the illuminance sensor value.
  • the control unit 220 is based on the setting information of each of the plurality of display modules 100-1, 100-2, 100-3, and 100-4, information about the image I D of the display device, and a plurality of A correction value for the brightness value of each light source of each of the display modules 100-1, 100-2, 100-3, and 100-4 may be calculated.
  • the setting information used herein may be a brightness value of a light source
  • the information about the image I D of the display device may be a brightness value as illustrated in FIG. 10.
  • FIG. 13 and 14 are diagrams for explaining an operation in which a server obtains distance information between a display device and a viewer according to an exemplary embodiment.
  • control unit 220 calculates a correction value for the brightness of the light source, it is also possible to use distance information from the viewers of the plurality of display modules 100-1, 100-2, 100-3, and 100-4. To this end, the controller 220 may obtain distance information from the viewer based on the image I D of the display device.
  • the width of the display device 1 displayed on the image I D of the display device becomes narrower as it goes upward.
  • the width of the display device 1 displayed in the image I D of the display device becomes narrower downward.
  • the distance information between the viewer and the plurality of display modules 100-1, 100-2, 100-3, and 100-4 is the upper edge E of the display device 1 shown in the image I D of the display device.
  • the ratio of the length of U ) and the length of the lower edge (E B ) or the angle between the left edge (E L ) or the right edge (E R ) of the display device (1) and the vertical line shown in the image (I D) of the display device Can be obtained based on.
  • the controller 220 may increase a correction value for the brightness of the light source of the display modules 100-1 and 100-2 located in the upper row. In this case, the amount of increase may be determined based on the obtained distance information.
  • the controller 220 may increase a correction value for the brightness of the light source of the display modules 100-3 and 100-4 located in a lower row. In this case, the amount of increase may be determined based on the obtained distance information.
  • 15 is a table showing an example of correction information for an RGB gain generated by a server according to an embodiment.
  • the correction information may include a correction value for RGB gain.
  • the controller 220 includes a plurality of color coordinate values, target color coordinate values, and a plurality of display modules 100-1, 100-2, 100-3, and 100-4 included in information about the image I D of the display device, respectively.
  • a correction value for the RGB gain of each of the plurality of display modules 100-1, 100-2, 100-3 and 100-4 may be calculated based on the RGB gain included in the setting information of.
  • the target color coordinate value may be set as a default value, may be input from a user, and the user may change the default value.
  • 16 is a table showing an example of correction information for one display module generated by a server according to an embodiment.
  • correction information for one display module 100-2 may include a set of correction values for a plurality of setting parameters.
  • the setting parameters include R gain, G gain, B gain, and brightness of the light source, each of the correction values for these setting parameters forms a set of correction values.
  • correction information for one display module 100-2, but the control unit 220 is a diagram for each of the plurality of display modules 100-1, 100-2, 100-3, and 100-4. Correction information as shown in FIG. 16 may be generated. Accordingly, the correction information generated by the controller 220 may include a plurality of sets of correction values for each of the plurality of display modules 100-1, 100-2, 100-3, and 100-4.
  • the control unit 220 may transmit the generated correction information to the display apparatus 1 through the communication unit 210.
  • the unique information included in the setting pattern includes the IP address of the display module 100. Accordingly, in transmitting the correction information, correction information for the plurality of display modules 100-1, 100-2, 100-3 and 100-4 may be transmitted to each of the plurality of display modules 100-1, 100-2, 100-3, and 100-4.
  • the communication unit 210 transmits correction information for the first display module 100-1 to the first display module 100-1, and the correction information for the second display module 100-2 is Transmitted to the second display module (100-2), and the correction information for the third display module (100-3) is transmitted to the third display module (100-3), and to the fourth display module (100-4).
  • the correction information may be transmitted to the fourth display module 100-4.
  • the entire correction information may be transmitted to one of the plurality of display modules 100-1, 100-2, 100-3, and 100-4, and the correction information may be transmitted in a loop-out or daisy chain method.
  • the plurality of display modules 100-1, 100-2, 100-3 and 100-4 may adjust the setting information based on the correction information generated by the server 200. Specifically, the plurality of display modules 100-1, 100-2, 100-3, and 100-4 may each adjust the RGB gain based on the correction value for the RGB gain, and the correction value for the brightness of the light source The brightness of the light source can be adjusted on the basis.
  • the server 200 or the mobile device 300 generates correction information for the display device 1 based on information about the image of the display device 1, target image information, and setting information of the display device 1
  • the display device 1 may display an image matching the target image information by adjusting at least one of an RGB gain, a brightness of a light source, and an RGB offset based on the generated correction information.
  • a method of calibrating a display device relates to a method of calibrating the color or brightness of the display device 1 according to the above-described embodiment, and correction information for correcting the color or brightness of the display device 1 is It may be generated by the server 200 or by the mobile device 300. Therefore, it goes without saying that the contents described above with reference to FIGS. 1 to 16 may also be applied to a method of calibrating a display device according to an exemplary embodiment, even if there is no separate mention.
  • 17 and 18 are flowcharts illustrating a method of calibrating a display device according to an exemplary embodiment.
  • the display device 1 may generate a setting pattern including setting information of the display module 100 (411 ).
  • the setting information of the display module 100 may include a setting parameter related to color or brightness and a parameter value thereof, and may include, for example, at least one of an RGB gain value, an RGB offset value, and a brightness value of a light source.
  • the setting pattern may include not only setting information, but also unique information including at least one of identification information of the display module 100, an IP address, a location in the display device 1, and whether or not a video wall mode is set. The generation of such a setting pattern may be performed in each of the plurality of display modules 100-1, 100-2, 100-3, and 100-4.
  • the display device 1 displays a setting pattern and a white image for white balance adjustment (412 ).
  • Each of the plurality of display modules 100-1, 100-2, 100-3, and 100-4 may display a setting pattern and a white image that they have created.
  • the mobile device 300 photographs the display device 1 displaying the setting pattern and the white image (421).
  • a camera provided in the mobile device 300 may be used.
  • the mobile device 300 may transmit the captured image of the display device or information about the image of the display device to the server 200.
  • the server 200 receives an image of the display device or information about the display device from the mobile device 300 (431).
  • the server 200 analyzes the image of the display device to obtain information about the image of the display device.
  • Information about an image of the display device may include at least one of a color coordinate value and a luminance value.
  • the server 200 may obtain a plurality of color coordinate values or a plurality of luminance values respectively corresponding to the plurality of display modules 100-1, 100-2, 100-3, and 100-4. A detailed description of this is as described above with reference to FIG. 11.
  • the server 200 generates correction information based on information about an image of the display device and setting information (432).
  • the setting information is information included in the setting pattern displayed on the display device 1, and the mobile device 300 may recognize the setting pattern to obtain setting information included in the setting pattern, or the server 200 By recognizing the setting pattern, setting information included in the setting pattern may be obtained.
  • the correction information may include at least one of a correction value for RGB gain, a correction value for RGB offset, and a correction value for brightness of a light source.
  • the server 200 may calculate a correction value for the RGB gain based on the target color coordinate value, the color coordinate value included in the image information, and the RGB gain value included in the setting information. That is, it is possible to calculate how to correct the current RGB gain in order to match the color coordinate value (the color coordinate value of the image displayed to the viewer) included in the image information to the target color coordinate value.
  • the server 200 may calculate a correction value for the brightness value of the light source based on the target brightness value, the brightness value included in the image information, and the brightness value of the light source included in the setting information. That is, it is possible to calculate how to correct the brightness of the current light source in order to match the luminance value included in the image information (the luminance value of the image displayed to the viewer) to the target luminance value.
  • the correction information generated by the server 200 is correction information for each of the plurality of display modules 100-1, 100-2, 100-3, and 100-4.
  • the server 200 transmits the generated correction information to the display device 1 (433).
  • the display device 1 may receive correction information from the server 200 (413) and adjust the setting information based on the correction information (414 ).
  • the plurality of display modules 100-1, 100-2, 100-3, and 100-4 may each adjust the RGB gain based on the correction value for the RGB gain, and the correction value for the brightness of the light source The brightness of the light source can be adjusted on the basis.
  • a method of calibrating a display device may include only some of the above-described processes depending on the performing entity. For example, if the display device 1 is a subject performing the method of calibrating the display device, steps 411, 412, 413, and 414 among the above-described processes may be included in the calibration method of the display device.
  • steps 431, 432, and 433 among the above-described processes may be included in the calibration method of the display device.
  • the mobile device 300 may perform a method of calibrating the display device. Hereinafter, it will be described with reference to FIG. 18.
  • the display apparatus 1 generates a setting pattern including setting information of the display module 100 (411 ), and displays a setting pattern and a white image for white balance adjustment (412 ).
  • the detailed description is as described in FIG. 17.
  • the mobile device 300 photographs the display device 1 displaying the setting pattern and the white image (421 ), recognizes the setting pattern, and acquires setting information of each of the plurality of display modules (423 ).
  • the mobile device 300 analyzes the captured image of the display device to obtain information about the image of the display device (424).
  • Information about an image of the display device may include at least one of a color coordinate value and a luminance value.
  • the mobile device 300 generates correction information based on information about an image of the display device and setting information (425).
  • the correction information may include at least one of a correction value for RGB gain, a correction value for RGB offset, and a correction value for brightness of a light source.
  • the mobile device 300 may calculate a correction value for the RGB gain based on the target color coordinate value, the color coordinate value included in the image information, and the RGB gain value included in the setting information. That is, it is possible to calculate how to correct the current RGB gain in order to match the color coordinate value (the color coordinate value of the image displayed to the viewer) included in the image information to the target color coordinate value.
  • the mobile device 300 may calculate a correction value for the brightness value of the light source based on the target brightness value, the brightness value included in the image information, and the brightness value of the light source included in the setting information. That is, in order to match the luminance value included in the image information (the luminance value of the image displayed to the viewer) to the target luminance value, how to correct the brightness of the current light source can be calculated.
  • the correction information generated by the mobile device 300 is correction information for each of the plurality of display modules 100-1, 100-2, 100-3, and 100-4.
  • the mobile device 300 transmits the generated correction information to the display device 1 (426).
  • the display device 1 may receive correction information from the server 200 (413) and adjust the setting information based on the correction information (414 ).
  • the processes performed by the server 200 in the embodiment of FIG. 17 are performed by the mobile device 300 in the embodiment of FIG. 18.
  • the mobile device 300 may include a memory in which a program for performing the above-described processes is stored and a processor for executing the stored program.
  • a program may be installed on the mobile device 300 by default, or a user may download a program from an external server and install it on the mobile device 300.
  • the recording medium is a computer-readable recording medium in which a program for executing the method of FIG. 17 is recorded.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

La présente invention concerne : un dispositif d'affichage dans lequel une correction de couleur peut être effectuée commodément à l'aide d'un dispositif mobile sans connexion d'un équipement supplémentaire ; un serveur ; et un procédé de correction du dispositif d'affichage. Un dispositif d'affichage selon un mode de réalisation comprend : une pluralité de panneaux d'affichage ; une pluralité de contrôleurs de module pour commander la pluralité de panneaux d'affichage, respectivement ; et une unité de communication pour communiquer avec le serveur. Lorsqu'une commande de correction de couleur est saisie, la pluralité de contrôleurs de module commandent la pluralité de panneaux d'affichage pour qu'ils affichent chacun un motif de configuration, qui comprend des informations de configuration pour le panneau d'affichage, et une image blanche utilisée pour le réglage de l'équilibre des blancs. Lorsque l'unité de communication reçoit, en provenance du serveur, des informations de correction servant à compenser un écart de couleur entre la pluralité de panneaux d'affichage, la pluralité de contrôleurs de module ajustent les informations de configuration sur la base des informations de correction reçues.
PCT/KR2020/012431 2019-09-20 2020-09-15 Dispositif d'affichage, serveur, et procédé de correction de dispositif d'affichage WO2021054696A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114446250A (zh) * 2022-02-14 2022-05-06 海信集团控股股份有限公司 显示设备及其背光控制方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102623412B1 (ko) * 2021-06-24 2024-01-10 주식회사 이안하이텍 Led전광판 시스템에서 개별색감을 조절하는 방법
KR102659164B1 (ko) 2021-10-22 2024-04-19 삼성전자주식회사 초분광 이미지 센서 및 그의 동작 방법

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140070120A (ko) * 2012-11-30 2014-06-10 삼성전자주식회사 디스플레이 장치의 색 보정 장치 및 그 보정 방법
KR20140126606A (ko) * 2013-04-23 2014-10-31 엘지전자 주식회사 비디오 월의 색좌표 또는 휘도의 보정장치 및 보정방법
KR20160053663A (ko) * 2014-11-05 2016-05-13 엘지전자 주식회사 화상출력장치, 이동 단말기 및 그것들의 제어 방법
KR20160064900A (ko) * 2014-11-28 2016-06-08 삼성전자주식회사 비디오 월 제어 장치 및 비디오 월 제어 방법
US20190191153A1 (en) * 2016-07-22 2019-06-20 Sharp Kabushiki Kaisha Display correction apparatus, program, and display correction system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140070120A (ko) * 2012-11-30 2014-06-10 삼성전자주식회사 디스플레이 장치의 색 보정 장치 및 그 보정 방법
KR20140126606A (ko) * 2013-04-23 2014-10-31 엘지전자 주식회사 비디오 월의 색좌표 또는 휘도의 보정장치 및 보정방법
KR20160053663A (ko) * 2014-11-05 2016-05-13 엘지전자 주식회사 화상출력장치, 이동 단말기 및 그것들의 제어 방법
KR20160064900A (ko) * 2014-11-28 2016-06-08 삼성전자주식회사 비디오 월 제어 장치 및 비디오 월 제어 방법
US20190191153A1 (en) * 2016-07-22 2019-06-20 Sharp Kabushiki Kaisha Display correction apparatus, program, and display correction system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114446250A (zh) * 2022-02-14 2022-05-06 海信集团控股股份有限公司 显示设备及其背光控制方法

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