Server and control method thereof

Abstract

A server according to an aspect of the disclosed invention may comprise: a communication unit that receives, from a measurement device, measurement data for the luminance of each of a plurality of display modules included in a display device; a memory that stores the measurement data; and at least one processor that calculates, on the basis of the measurement data, first compensation data for non-uniformity of the measured luminance of the measurement device, and calculates, on the basis of the measurement data and the first compensation data, second compensation data for each of the plurality of display modules for non-uniformity of the luminance of each of the plurality of display modules.

Description

Server and its control method

[0001] The disclosed invention relates to a server and a control method thereof for improving luminance non-uniformity of a display device.

[0002] In general, a display device is a type of output device that converts acquired or stored electrical information into visual information and displays it to the user, and is used in various fields such as homes and businesses.

[0003] Display devices can be divided into self-emissive displays, in which each pixel emits light by itself, and photoluminescent displays, which require a separate light source.

[0004] As the types of display devices diversify and the types of content displayed diversify accordingly, the importance of brightness uniformity of display devices is increasing.

[0005] To improve this luminance unevenness, a measuring device is used to measure the display device, but errors in the measuring device itself may cause the luminance of the display device to not be set uniformly.

[0006] One aspect of the disclosed invention provides a server and a control method thereof that can improve luminance unevenness of a display device by calculating compensation data for unevenness of measured luminance due to errors of the measuring device itself, etc., and correcting the luminance unevenness of the display device based on the compensation data.

[0007] The technical problems to be achieved in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0008] According to one aspect of the disclosed invention, a server may include a communication unit that receives measurement data on the luminance of each of a plurality of display modules included in a display device from a measurement device; a memory that stores the measurement data; and at least one processor that calculates first compensation data for unevenness in the measured luminance of the measurement device based on the measurement data, and calculates second compensation data for each of the plurality of display modules for unevenness in the luminance of each of the plurality of display modules based on the measurement data and the first compensation data.

[0009] A control method of a server according to one aspect of the disclosed invention may include receiving measurement data for the luminance of each of a plurality of display modules included in a display device from a measurement device; calculating first compensation data for unevenness in the measured luminance of the measurement device based on the measurement data; and calculating second compensation data for each of the plurality of display modules for unevenness in the luminance of each of the plurality of display modules included in the display device based on the measurement data and the first compensation data.

[0010] FIG. 1 is an external view of a display device according to one embodiment.

[0011] FIG. 2 is a perspective view illustrating an example of a display module and a display device including the same according to one embodiment.

[0012] FIG. 3 is a drawing showing an example of a pixel array constituting a unit module of a display device according to one embodiment.

[0013] Figure 4 is a drawing to explain errors that may occur depending on the measurement position of the measuring equipment.

[0014] Figure 5 is a drawing to explain the non-uniformity of measured luminance due to error in the measuring equipment.

[0015] FIG. 6 is a control block diagram illustrating a server and a measuring device and a display device communicating with the server according to one embodiment.

[0016] FIG. 7 is a diagram illustrating the mutual operation of a server and a measuring device and a display device communicating with the server according to one embodiment of the present disclosure.

[0017] FIGS. 8 and 9 are flowcharts illustrating a method for controlling a server according to one embodiment of the present disclosure.

[0018] FIG. 10 is a diagram illustrating a plurality of display modules of a display device according to one embodiment of the present disclosure.

[0019] FIG. 11 is a flowchart illustrating calculating compensation data based on measurement data of a plurality of display modules according to one embodiment of the present disclosure.

[0020] FIG. 12 is a control block diagram illustrating a plurality of measuring devices and a server according to one embodiment of the present disclosure.

[0021] FIG. 13 is a flowchart illustrating calculating compensation data based on measurement data of a plurality of measurement devices according to one embodiment of the present disclosure.

[0022] It should be understood that the various embodiments and terms used in this document are not intended to limit the technical features described in this document to specific embodiments, but rather to encompass various modifications, equivalents, or alternatives of the embodiments.

[0023] In connection with the description of the drawings, similar reference numerals may be used for similar or related components.

[0024] The singular form of a noun corresponding to an item may include one or more of said items, unless the relevant context clearly indicates otherwise.

[0025] In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" may include any one of the items listed together in that phrase, or all possible combinations thereof.

[0026] The term “and / or” includes any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0027] Terms such as "first," "second," or "first" or "second" may be used simply to distinguish one component from another and do not qualify the components in any other respect (e.g., importance or order).

[0028] When a component (e.g., a first component) is referred to as being "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0029] The terms “include” or “have” are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in this document, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0030] When a component is said to be “connected,” “coupled,” “supported,” or “in contact with” another component, this includes not only cases where the components are directly connected, coupled, supported, or in contact, but also cases where the components are indirectly connected, coupled, supported, or in contact through a third component.

[0031] When we say that a component is “on” another component, this includes not only cases where the component is in contact with the other component, but also cases where there is another component between the two components.

[0032] Hereinafter, an embodiment according to the present invention will be described with reference to the attached drawings.

[0033] FIG. 1 is an external view of a display device according to one embodiment.

[0034] A display device is a device that processes an image signal received from an external source and can visually display the processed image. The following example illustrates an LED display as the display device, but is not limited thereto. For example, a display device can be implemented in various forms, such as a TV, LED screen, indoor display device, monitor, portable multimedia device, portable communication device, or portable computing device. As long as the display device visually displays an image, its form is not limited.

[0035] In addition, the display device may be a large display device installed outdoors, such as on a building rooftop or at a bus stop, or an outdoor display device. Here, the term "outdoor" is not necessarily limited to outdoors, and a display device according to one embodiment may be installed in any indoor location where a large number of people may enter and exit, such as a subway station, shopping mall, movie theater, company, or store.

[0036] A display device can receive video and audio signals from various content sources and output video and audio corresponding to the video and audio signals. For example, the display device can receive television broadcast content via a broadcast reception antenna or wired cable, receive content from a content playback device, or receive content from a content provider's content delivery server.

[0037] The display device may include a self-luminous display panel that displays images using elements that emit light on their own. A self-luminous display panel includes a light-emitting diode panel. The display device may also include a non-luminous display panel that displays images by passing or blocking light emitted from a backlight unit. Non-luminous display panels include liquid crystal display panels.

[0038] As illustrated in FIG. 1, the display device may include a main body (31) that accommodates a plurality of components for displaying an image, and a screen (S) provided on one side of the main body (31) to display an image (I).

[0039] The main body (31) forms the exterior of the display device, and components for displaying an image (I) may be provided inside the main body (31). The main body (31) illustrated in Fig. 1 has a flat plate shape, but the shape of the main body (31) is not limited to that illustrated in Fig. 1. For example, the main body (31) may have a curved shape in which the left and right ends protrude forward and the center is concave.

[0040] A screen (S) is formed on the front of the main body (31), and an image (I), which is visual information, can be displayed on the screen (S). For example, a still image or a moving image can be displayed on the screen (S), and a two-dimensional flat image or a three-dimensional stereoscopic image can be displayed.

[0041] The display device may be implemented as a stand-alone type as illustrated in Fig. 1, or may be implemented as a wall-mounted type. In addition, the display device may be implemented as a rectangular shape in which the width (length in the Y-axis direction) is shorter than the height (length in the Z-axis direction) as illustrated in Fig. 1, or may be implemented as a rectangular shape in which the width is longer than the height, or may be implemented as a square shape. There are no restrictions on the method by which the display device is supported or the shape of the display device.

[0042] In the embodiments described below, the direction in which the image is output (+X direction) is defined as forward, and the opposite direction (-X direction) is defined as backward. In addition, the coordinate system of the XYZ axes is based on the display device, and even if the display device is not standing up as in Fig. 1 but lying down, the coordinate system based on the display device does not change.

[0043] FIG. 2 is a perspective view showing an example of a display module and a display device including the same according to one embodiment, and FIG. 3 is a drawing showing an example of a pixel array constituting a unit module of a display device according to one embodiment.

[0044] A display device according to one embodiment may be a self-luminous display device in which light-emitting elements are arranged for each pixel so that each pixel can emit light on its own, or may be a non-luminous display device that displays an image by passing or blocking light emitted from a backlight unit.

[0045] Although the present invention is described assuming that the display device is a self-luminous display device, the display device according to one embodiment is not limited thereto and may include a non-luminous display device.

[0046] In the case of self-luminous display devices, unlike liquid crystal display devices, they do not require components such as a backlight unit or liquid crystal layer, so they can be made thin, and their simple structure allows for various design changes.

[0047] In addition, the display device according to one embodiment may employ an organic light-emitting element, such as an organic light-emitting diode, as the light-emitting element disposed in each pixel. In addition, an inorganic light-emitting element, such as an inorganic light-emitting diode, may be employed as the light-emitting element disposed in each pixel.

[0048] The light-emitting element employed in a display device according to one embodiment may be a micro LED having a short side length of approximately 100 μm. By employing micro-sized LEDs in this manner, pixel sizes can be reduced and high resolution can be achieved even within the same screen size.

[0049] In the example of FIG. 2, the display device (30) includes a single display module (32), but the display device (30) may include multiple display modules to implement a large-area screen, thereby being implemented as a large LED display (large LED screen), TV, wearable device, portable device, PC monitor, etc.

[0050] For convenience, the components that constitute a display device are described as display modules. However, a display device may also be composed of multiple display devices. In other words, the term "display device" refers to a modular type, and its constituent elements can be expressed using various terms, such as "display module" or "display device." For convenience, the term "display module" is used in this patent.

[0051] Referring to FIG. 3, the display module (32) may include a plurality of pixels arranged in a two-dimensional manner, i.e., an M x N (M, N are integers greater than or equal to 2) array of pixels. FIG. 3 conceptually illustrates the pixel array, and it is to be understood that, in addition to the active area where pixels are arranged in the display module (32), a bezel area or wiring area where no image is displayed may also be located.

[0052] In the present embodiment, the fact that certain components are arranged two-dimensionally may include not only cases where the components are arranged on the same plane, but also cases where the components are arranged on different planes that are parallel to each other. Furthermore, cases where the components are arranged on the same plane do not necessarily require that the tops of the arranged components be located on the same plane, and cases where the tops of the arranged components are located on different planes that are parallel to each other may also be included.

[0053] A pixel (P) can be composed of at least three sub-pixels that output light of different colors. For example, a unit pixel (P) can be composed of three sub-pixels (SP(R), SP(G), SP(B)) corresponding to R, G, and B, respectively. Here, a red sub-pixel (SP(R)) can output red light, a green sub-pixel (SP(G)) can output green light, and a blue sub-pixel (SP(B)) can output blue light.

[0054] However, the pixel arrangement of FIG. 3 is merely an example that can be applied to a display module (32) and a display device (30) according to one embodiment, and the sub-pixels may be arranged along the Z-axis direction, may not be arranged in a row, and may be implemented with different sizes of the sub-pixels. A single pixel only needs to include multiple sub-pixels to implement multiple colors, and there are no restrictions on the size or arrangement of each sub-pixel.

[0055] In addition, a pixel (P) does not necessarily have to be composed of a red sub-pixel (SP(R)) that outputs red light, a green sub-pixel (SP(G)) that outputs green light, and a blue sub-pixel (SP(B)) that outputs blue light, and it is also possible to include a sub-pixel that outputs yellow light or white light. In other words, there are no restrictions on the color or type of light output from each sub-pixel, or the number of sub-pixels.

[0056] However, in the embodiments described later, for the sake of specific explanation, an example will be given in which a pixel (P) is composed of a red sub-pixel (SP(R)), a green sub-pixel (SP(G)), and a blue sub-pixel (SP(B)).

[0057] As mentioned above, the display module (32) and the display device (30) according to one embodiment are described assuming that each pixel is a self-luminous display device that can emit light by itself. Accordingly, a light-emitting element that emits light of a different color may be arranged in each sub-pixel. For example, a red light-emitting element may be arranged in a red sub-pixel (SP(R)), a green light-emitting element may be arranged in a green sub-pixel (SP(G)), and a blue light-emitting element may be arranged in a blue sub-pixel (SP(B)).

[0058] Accordingly, in the present embodiment, a pixel (P) may represent a cluster including a red light-emitting element, a green light-emitting element, and a blue light-emitting element, and a sub-pixel may represent each light-emitting element.

[0059] Below, various data on the brightness of the display device (30) are measured, and an operation for improving the brightness non-uniformity of the display device (30) based on the measured values ​​is described in detail.

[0060] Figure 4 is a drawing for explaining errors that may occur depending on the measurement position of the measuring equipment, and Figure 5 is a drawing for explaining unevenness in measured luminance due to errors in the measuring equipment.

[0061] If the display device (30) has a luminance unevenness characteristic, luminance uniformity can be achieved through compensation.

[0062] However, the brightness of the display device (30) may become uneven even through correction due to errors in the measuring device (20) itself for measuring data regarding the brightness of the display device (30).

[0063] In the present invention, in order to prevent a decrease in the brightness improvement of a display device (30) due to the unevenness of the measured brightness of the measuring device (20) itself, compensation data for the unevenness of the measured brightness of the measuring device (20) is calculated based on the data measured by the measuring device (20), thereby eliminating causes such as errors of the measuring device (20) and thereby promoting more accurate brightness uniformity of the display device (30).

[0064] Referring to FIG. 4, when a plurality of display modules (32) included in a display device (30) are measured by a measuring device (20), the shape of the pixels may vary depending on the measurement position. This means that when a display module is measured by a measuring device, the measured shape may vary depending on the lens characteristics of the measuring device even if the pixels at the center and edges are physically the same.

[0065] Here, the measuring device (20) can be implemented in various forms that can measure the plurality of display modules (32) included in the display device (30) as a separate external device for measuring the plurality of display modules (32) included in the display device (30), and can be implemented in the form of, for example, a measuring instrument, a camera, etc.

[0066] As shown in Fig. 4, when the center of the display module (32) is measured, the shape of the pixel is measured as a circle, whereas when the edge of the display module (32) is measured, the shape of the pixel is measured as an ellipse, so that even pixels of the same shape can be measured differently. Such measurement errors are not limited to those shown in Fig. 4, and various types of measurement errors can occur.

[0067] In addition, measurement errors appear not only on a pixel basis but also in other forms. Although the display device has the same luminance for the entire area, due to measurement errors in the measuring instrument, the luminance may be measured differently in each area within the same luminance, as in FIG. 5. For convenience of explanation, FIG. 5 exemplifies that the left area of ​​multiple display modules (32) included in the display device (30) is measured to have lower luminance than the right area, but the present invention is not limited thereto, and unevenness in the measured luminance may occur in various forms. In addition, if the display module has uneven luminance characteristics, the display device also has uneven luminance characteristics.

[0068] Below, a server (10) and a control method thereof that can improve the luminance unevenness of a display device (30) by correcting the unevenness of measured luminance due to measurement errors of the measuring device (20), etc. are described.

[0069] FIG. 6 is a control block diagram illustrating a server and a measuring device and a display device communicating with the server according to one embodiment.

[0070] A server (10) according to one embodiment of the disclosed invention includes a communication unit (110) and a control unit (120), and the control unit (120) may include at least one processor (121) and a memory (122).

[0071] The communication unit (110) can communicate with an external device. That is, the communication unit (110) of the present invention can communicate with the measuring device (20), the display device (30), and the display module (32) and transmit and receive data.

[0072] The measuring device (20) obtains measurement data on the luminance of a plurality of display modules (32) included in the display device (30), transmits the measurement data on the luminance of the plurality of display modules (32) included in the display device (30) to the communication unit (110), and the communication unit (110) can receive the measurement data on the luminance of the plurality of display modules (32) included in the display device (30) from the measuring device (20). In addition, compensation data on luminance unevenness of the plurality of display modules (32) included in the display device (30), which will be described later, can be transmitted to the display device (30) and can also be transmitted to the memory (122).

[0073] The control unit (120) may include a memory (122) that stores a control program and control data for calculating compensation data, etc. based on various data, and at least one processor (121) that generates a control signal according to the control program and control data stored in the memory (122). The memory (122) and the processor may be provided integrally or separately.

[0074] The memory (122) can store measurement data and calculated compensation data received by the communication unit (110), and can store programs and data for calculating compensation data and the like based on various data.

[0075] The memory (122) may include volatile memory such as Static Random Access Memory (S-RAM) and Dynamic Random Access Memory (D-RAP) for temporarily storing data. In addition, the memory (122) may include nonvolatile memory such as Read Only Memory (ROM), Erasable Programmable Read Only Memory (EPROM), and Electrically Erasable Programmable Read Only Memory (EEPROM) for long-term storage of data.

[0076] The processor may include various logic circuits and operation circuits, process data according to a program provided from memory (122), and generate a control signal according to the processing result.

[0077] At least one processor (121) can calculate compensation data (first compensation data) for unevenness in measured luminance of a measurement device (20) based on measurement data for luminance of a plurality of display modules (32) included in a display device (30) received by a communication unit (110) and stored by a memory (122).

[0078] At least one processor (121) can calculate compensation data (second compensation data) for luminance unevenness of each of the plurality of display modules (32) included in the display device (30) based on measurement data for luminance of the plurality of display modules (32) included in the display device (30) and compensation data for unevenness in the measured luminance of the measurement device (20). The compensation data can be stored in the memory (122).

[0079] The communication unit (110) can transmit compensation data for luminance unevenness of a plurality of display modules (32) included in a display device (30) operated by at least one processor (121) to the display device (30), and can also transmit compensation data for luminance unevenness of a plurality of display modules (32) included in the display device (30) to a memory.

[0080] FIG. 7 is a diagram illustrating the mutual operation of a server, a measuring device communicating with the server, a display device, and a display module according to one embodiment of the present disclosure.

[0081] The measuring device (20) can obtain measurement data for the brightness of each of the plurality of display modules (32) included in the display device (30), and the server (10) can receive such measurement data by the communication unit (110) (S01).

[0082] Here, the measurement data for the luminance of each of the plurality of display modules (32) included in the display device (30) may include luminance measurement values ​​for various display states of each of the plurality of display modules (32) included in the display device (30).

[0083] For example, it may include a luminance value for at least one color expressed by a pixel (P) in a plurality of display modules (32) included in a display device (30). As described above, when a pixel (P) is composed of a red sub-pixel (SP(R)), a green sub-pixel (SP(G)), and a blue sub-pixel (SP(B)), a luminance measurement value for each color displayed can be obtained. This is merely an example, and it is of course possible to obtain luminance measurement values ​​for various colors.

[0084] Additionally, measurement data for the luminance of the plurality of display modules (32) included in the display device (30) may include luminance measurement values ​​for at least one pattern displayed by the plurality of display modules (32) included in the display device (30).

[0085] Here, the pattern may include controlling the on / off of pixels (P) to display a specific pattern. For example, it may include a pattern that displays all pixels (P) by turning them on.

[0086] Additionally, measurement data for the luminance of the plurality of display modules (32) included in the display device (30) may include luminance measurement values ​​for various gradations displayed by the plurality of display modules (32) included in the display device (30).

[0087] The measuring device (20) can obtain the various measurement data described above and transmit them to the server (10).

[0088] Additionally, the measurement data may include multiple measurement data for the luminance of each of the multiple display modules (32) included in the display device (30). The multiple measurement data may include multiple measurement data for the various situations described above, or may include multiple measurement data measured twice or more in the same situation.

[0089] The server (10) receives measurement data on the luminance of each of a plurality of display modules (32) included in the display device (30) from the measurement device (20), and can calculate compensation data for the unevenness of the measured luminance of the measurement device (20) based on the measurement data (S02).

[0090] At least one processor (121) can calculate compensation data for unevenness in the measured luminance of the measuring device (20) based on a plurality of measurement data for the luminance of each of a plurality of display modules (32) included in the display device (30).

[0091] That is, it is possible to compensate for the unevenness of the measured luminance of the measuring device (20) from common phenomena, etc., in the plurality of measurement data for the luminance of each of the plurality of display modules (32) included in the display device (30).

[0092] For example, if a phenomenon in which the left area of ​​a plurality of display modules (32) included in a display device (30) measured by a measuring device (20) as shown in FIG. 5 is measured to have lower luminance than the right area is commonly found in a plurality of measurement data, at least one processor (121) can calculate compensation data for the unevenness in the measured luminance of the measuring device (20).

[0093] That is, in a situation like Fig. 5, compensation data can be calculated to make the luminance of the left area and the luminance of the right area the same so that the same luminance is measured overall.

[0094] The server (10) may calculate compensation data for luminance unevenness of each of the plurality of display modules (32) included in the display device (30) based on measurement data for luminance of each of the plurality of display modules (32) included in the display device (30) received from the measurement device (20) and compensation data for unevenness of the measured luminance of the measurement device (20) calculated by at least one processor (121), and may finally calculate compensation data for luminance unevenness of each of the plurality of display modules (32) included in the display device (30) for each of the plurality of display modules (32) (S03).

[0095] That is, when calculating compensation data for luminance unevenness of each of the plurality of display modules (32) included in the display device (30), not only the measurement data for each of the plurality of display modules (32) included in the display device (30) is used, but also compensation data for unevenness in the measured luminance of the measuring device (20) that takes into account errors of the measuring device (20), etc., is used together, thereby further improving the luminance unevenness of each of the plurality of display modules (32) included in the display device (30).

[0096] The server (10) stores the calibration results, which are compensation data for the luminance unevenness of each of the plurality of display modules (32) included in the calculated display device (30), in the memory (122) and transmits them so that they can be applied to each of the plurality of display modules (32) through the communication unit (110). If the display module (32) is not alone but is composed of a display device (30), the compensation data corresponding to each display module (32) is transmitted so that it can be applied to each display module (32).

[0097] FIGS. 8 and 9 are flowcharts illustrating a method for controlling a server according to one embodiment of the present disclosure.

[0098] By means of the communication unit (110), measurement data on the brightness of each of the plurality of display modules (32) included in the display device (30) can be received from the measurement device (20) (701).

[0099] As described above, the measurement data may include various measurement data for the luminance of each of the plurality of display modules (32) included in the display device (30). For example, the measurement data may include luminance data for each of at least one color displayed by each of the plurality of display modules (32) included in the display device (30) or luminance data for each of at least one pattern displayed by each of the plurality of display modules (32) included in the display device (30).

[0100] At least one processor (121) can calculate compensation data (first compensation data) for non-uniformity of measured luminance of the measuring device (20) based on the measurement data (703).

[0101] Compensation data for correcting such luminance unevenness can be calculated based on a common luminance unevenness phenomenon determined by multiple measurement data.

[0102] At least one processor (121) can calculate compensation data (second compensation data) for each display module (32) for luminance unevenness of each of the plurality of display modules (32) included in the display device (30) based on measurement data for luminance of each of the plurality of display modules (32) included in the display device (30) and compensation data for unevenness of the measured luminance of the measurement device (20) (705).

[0103] The communication unit (110) can transmit (803) compensation data for luminance unevenness of each of the plurality of display modules (32) included in the calculated display device (30) to the display device (30) and store it in the memory. Each of the plurality of display modules (32) included in the display device (30) is compensated to have uniform luminance characteristics by reflecting the received compensation data (calibration result) for each display module, and the display device formed by the combination of display modules is also compensated to have uniform luminance characteristics.

[0104] FIG. 10 is a diagram illustrating a plurality of display modules of a display device according to one embodiment of the present disclosure, and FIG. 11 is a flowchart illustrating calculating compensation data for unevenness in measured luminance of a measurement device based on measurement data of a plurality of display modules according to one embodiment of the present disclosure.

[0105] Referring to FIG. 10, the display device (30) includes a plurality of display modules (32-1, 32-2, 32-3, ) may be included. That is, the display device (30) according to one embodiment may be a display device (30) composed of one module, but may also be a modular display device (30) composed of multiple modules assembled together. Although the elements constituting the display device are expressed as display modules, this is a phrase expressed for the purpose of explanation and is not limited to the word module. Accordingly, the display device may be composed of one display or a combination of multiple displays.

[0106] In this case, when the display device (30) is composed of multiple display modules, the measuring device (20) can measure the luminance for each of the multiple display modules.

[0107] The communication unit (110) receives measurement data for the luminance of each of the plurality of display modules from the measurement device (20) (1101), and at least one processor (121) can generate measurement data for the luminance of each of the plurality of display modules in which the compensation data of the measurement device (20) is reflected. Thereafter, at least one processor (121) can calculate (calibrate) compensation data for the unevenness of the measured luminance of the measurement device (20) based on the measurement data for the luminance of each of the plurality of display modules (1103).

[0108] That is, based on the measurement data for each display module, the measurement error of the measuring device (20), etc. can be determined, and compensation data for each display module can be calculated based on the measurement data for each display module.

[0109] At least one processor (121) can calculate compensation data for luminance unevenness of the display device (30) based on measurement data for luminance of each of the plurality of display modules and compensation data for luminance unevenness of the measurement device (20) based on the measurement data for each display module.

[0110] FIG. 12 is a control block diagram showing a plurality of measurement devices and a server according to one embodiment of the present disclosure, and FIG. 13 is a flowchart showing calculating compensation data for each of a plurality of measurement devices based on measurement data of the plurality of measurement devices according to one embodiment of the present disclosure.

[0111] Measurement data for the brightness of each of the plurality of display modules (32) included in the display device (30) may be obtained by one measuring device (20), but may also be obtained by two or more measuring devices (20). That is, as shown in FIG. 12, the measuring device (20) may be a plurality of measuring devices (20-1, 20-2, 20-3, etc.), such as the first measuring device (20-1) to the third measuring device (20-3). ) may be included.

[0112] When there are multiple measuring devices (20), measurement data for the brightness of each of the multiple display modules (32) included in the display device (30) can be obtained for each measuring device (20), and the communication unit (110) can receive measurement data for the brightness of each of the multiple display modules (32) included in the display device (30) from each of the multiple measuring devices (20) (1301).

[0113] At least one processor (121) can calculate compensation data (third compensation data) for each of the plurality of measuring devices (20) for non-uniformity in measured luminance of each of the plurality of measuring devices (20) based on measurement data for luminance of each of the plurality of display modules (32) of each of the plurality of measuring devices (20) (1303).

[0114] At least one processor (121) can calculate compensation data for each of the plurality of measuring devices (20) for luminance unevenness of each of the plurality of display modules (32) included in the display device (30) based on measurement data for luminance of each of the plurality of measuring devices (20) and compensation data for each of the plurality of measuring devices (20) for luminance unevenness of each of the plurality of measuring devices (20).

[0115] Even if multiple display modules are used in the same manner, if the measuring device is different, the compensation data for the non-uniformity characteristics of the luminance measured by each measuring device will be different, which may mean that the compensation data that must be applied to each of the multiple display modules will be different as a result.

[0116] According to one embodiment, a server may include a communication unit that receives measurement data on luminance of a display device from a measurement device; a memory that stores the measurement data; and at least one processor that calculates compensation data for unevenness in measured luminance of the measurement device based on the measurement data, and calculates compensation data for luminance imbalance of the display device based on the measurement data and the compensation data for unevenness in measured luminance of the measurement device.

[0117] According to the present disclosure, by calculating compensation data for unevenness in measured luminance due to errors in the measuring device itself, etc., and correcting the unevenness in luminance of the display device based on the compensation data, the unevenness in luminance of the display device can be improved.

[0118] The above communication unit can transmit compensation data for the calculated luminance imbalance of the display device to the display device.

[0119] The above measurement data includes a plurality of measurement data for the luminance of the display device, and the at least one processor can calculate compensation data for non-uniformity of the measured luminance of the measurement device based on the plurality of measurement data.

[0120] The display device may include a plurality of display modules, and the measurement data may include measurement data for brightness of each of the plurality of display modules.

[0121] The at least one processor can calculate compensation data for unevenness in the measured luminance of the measuring device based on measurement data for the luminance of each of the plurality of display modules.

[0122] The measuring device includes a plurality of measuring devices, and the at least one processor can calculate compensation data for unevenness in measured luminance of each of the plurality of measuring devices based on measurement data of each of the plurality of measuring devices.

[0123] The above measurement data may include luminance data for each of at least one color displayed by the display device.

[0124] The above measurement data may include luminance data for at least one pattern displayed by the display device.

[0125] A control method of a server according to one embodiment may include: receiving measurement data on the luminance of a display device from a measurement device; calculating compensation data for unevenness in the measured luminance of the measurement device based on the measurement data; and calculating compensation data for unevenness in the luminance of the display device based on the measurement data and the compensation data for the unevenness in the measured luminance of the measurement device.

[0126] It may further include transmitting compensation data for luminance unevenness of the display device calculated above to the display device.

[0127] The above measurement data includes a plurality of measurement data for the luminance of the display device, and calculating compensation data for luminance unevenness of the display device may include calculating compensation data for unevenness of measured luminance of the measurement device based on the plurality of measurement data.

[0128] The display device may include a plurality of display modules, and the measurement data may include measurement data for brightness of each of the plurality of display modules.

[0129] Computing compensation data for the unevenness in the measured luminance of the measuring device may include calculating compensation data for the unevenness in the measured luminance of the measuring device based on measurement data for the luminance of each of the plurality of display modules.

[0130] The measuring device may include a plurality of measuring devices, and calculating compensation data for unevenness in measured luminance of the measuring devices may include calculating compensation data for unevenness in measured luminance of each of the plurality of measuring devices based on measurement data of each of the plurality of measuring devices.

[0131] The above measurement data may include luminance data for each of at least one color displayed by the display device.

[0132] The above measurement data may include luminance data for at least one pattern displayed by the display device.

[0133] According to the disclosed invention, by calculating compensation data for unevenness in measured luminance due to errors in the measuring device itself, etc., and correcting the unevenness in luminance of the display device based on the compensation data, the unevenness in luminance of the display device can be improved.

[0134] Meanwhile, the disclosed embodiments may be implemented in the form of a recording medium storing computer-executable instructions. The instructions may be stored in the form of program code, and when executed by a processor, may generate program modules to perform the operations of the disclosed embodiments. The recording medium may be implemented as a computer-readable recording medium.

[0135] Computer-readable storage media include all types of storage media that store instructions that can be deciphered by a computer. Examples include read-only memory (ROM), random access memory (RAM), magnetic tape, magnetic disks, flash memory, and optical data storage devices.

[0136] The disclosed embodiments have been described with reference to the attached drawings as described above. Those skilled in the art will understand that the present invention can be implemented in forms other than the disclosed embodiments without altering the technical spirit or essential features of the present invention. The disclosed embodiments are illustrative and should not be construed as limiting.

Claims

1. A communication unit that receives measurement data on the brightness of each of a plurality of display modules included in a display device from a measuring device; A memory for storing the above measurement data; and Based on the above measurement data, first compensation data for the unevenness of the measured luminance of the measuring device is calculated, A server comprising at least one processor for calculating second compensation data for each of a plurality of display modules for luminance unevenness of each of the plurality of display modules based on the measurement data and the first compensation data.

2. In paragraph 1, The above communication department, A server that transmits the calculated second compensation data to each of the plurality of display modules.

3. In paragraph 1, The above measurement data includes a plurality of measurement data for the brightness of each of a plurality of display modules included in the display device, At least one processor, A server that calculates the first compensation data based on the plurality of measurement data.

4. In paragraph 1, At least one processor, A server that calculates the first compensation data based on measurement data for the brightness of each of the plurality of display modules.

5. In paragraph 1, The above measuring device comprises a plurality of measuring devices, At least one processor, A server that calculates third compensation data for each of the plurality of measuring devices for unevenness in measured luminance of each of the plurality of measuring devices based on measurement data of each of the plurality of measuring devices.

6. In paragraph 1, The above measurement data is, A server including luminance data for each of at least one color displayed by each of the plurality of display modules.

7. In paragraph 1, The above measurement data is, A server comprising luminance data for at least one pattern displayed by each of the plurality of display modules.

8. Receive measurement data for the brightness of each of a plurality of display modules included in the display device from the measuring device; Calculating first compensation data for unevenness in measured luminance of the measuring device based on the above measurement data; A control method of a server, comprising: calculating second compensation data for each of a plurality of display modules for luminance unevenness of each of a plurality of display modules included in the display device based on the measurement data and the first compensation data; 9. In paragraph 8, A control method of a server further comprising: transmitting second compensation data for the calculated luminance unevenness to each of a plurality of display modules included in the display device.

10. In paragraph 8, The above measurement data includes a plurality of measurement data for the brightness of each of a plurality of display modules included in the display device, Computing the above first compensation data is: A control method of a server including calculating the first compensation data based on the plurality of measurement data.

11. In paragraph 10, Computing the above first compensation data is: A control method of a server, comprising calculating the first compensation data based on measurement data for the brightness of each of the plurality of display modules.

12. In paragraph 10, The above measuring device comprises a plurality of measuring devices, Computing the above first compensation data is: A control method of a server, comprising calculating third compensation data for each of the plurality of measuring devices for unevenness in measured luminance of each of the plurality of measuring devices based on measurement data of each of the plurality of measuring devices.

13. In paragraph 8, The above measurement data is, A control method of a server including luminance data for each of at least one color displayed by each of the plurality of display modules.

14. In paragraph 8, The above measurement data is, A control method of a server including luminance data for at least one pattern displayed by each of the plurality of display modules.

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