Electronic device and control method thereof

Abstract

This electronic device comprises: an interface for receiving an image signal to be displayed on a display device; a memory for storing at least one instruction; and at least one processor for providing the display device with image data corresponding to the image signal by executing the at least one instruction, wherein the at least one processor acquires luminance information of the image data on the basis of the image signal to be displayed on the display device, acquires luminance information of another display device in a display group, and acquires a luminance correction value to be commonly applied to a plurality of display devices in the display group, on the basis of the luminance information of the display device and the luminance information of the other display device.

Description

Electronic device and method of controlling the same

[0001] Embodiments of the present disclosure relate to an electronic device and a control method thereof, and more particularly, to an electronic device and a control method thereof in which a plurality of display devices can apply a common energy saving technology.

[0002] Recently, various LED modular display systems have been developed. These systems are implemented by physically connecting multiple LED display devices, allowing them to display high-resolution images on a large screen, providing users with a visually satisfying experience.

[0003] However, as multiple LED display devices display high-resolution images, LED modular display systems can consume significant power. Consequently, the need for technologies that can reduce the power consumption of LED modular display systems is growing.

[0004] An electronic device connected to one display device within a display group according to one embodiment of the present disclosure includes an interface for receiving an image signal to be displayed on the display device, a memory for storing at least one instruction, and at least one processor for providing image data corresponding to the image signal to the display device by executing the at least one instruction, wherein the at least one processor can obtain luminance information of the image data based on the image signal to be displayed on the display device, obtain luminance information of another display device within the display group, and obtain a luminance correction value to be commonly applied to a plurality of display devices within the display group based on the luminance information of the display device and the luminance information of the other display device.

[0005] The at least one processor can obtain at least one luminance information among first luminance information corresponding to motion information in the image data and second luminance information corresponding to complexity in the image data.

[0006] The at least one processor can obtain luminance information of the image data by combining the first luminance information and the second luminance information.

[0007] The at least one processor can identify first selection information among first luminance information of the display device and first luminance information of the other display device based on preset criteria, identify second selection information among second luminance information of the display device and second luminance information of the other display device, and obtain a luminance correction value using the first selection information and the second selection information.

[0008] The at least one processor can obtain illumination information detected by a sensor of the display device and obtain third luminance information based on the obtained illumination information.

[0009] The at least one processor can select one of the first value of the luminance information of the display device and the second value of the luminance information of the other display device based on a preset criterion, and obtain a luminance correction value to be commonly applied to a plurality of display devices within the display group.

[0010] The at least one processor can control the interface to provide the acquired luminance correction value to the display device.

[0011] The interface includes a communication interface for transmitting and receiving information with another electronic device or another display device within the display group, and the at least one processor can control the communication interface to provide the acquired brightness correction value to the other electronic device or another display device.

[0012] The at least one processor can control the interface to correct an image signal to be provided to the display device in response to the acquired luminance correction value, and to provide the corrected image signal to the display device.

[0013] The at least one processor can store the acquired luminance correction value in the memory and update the luminance correction value when the scene of the image data changes or a preset period elapses.

[0014] A method for controlling an electronic device connected to a display device belonging to a display group according to one embodiment of the present disclosure includes the steps of obtaining luminance information of image data based on an image signal to be displayed on the display device, obtaining luminance information of another display device within the display group, and obtaining a luminance correction value to be commonly applied to a plurality of display devices within the display group based on the luminance information of the display device and the luminance information of the other display device.

[0015] The step of obtaining the above luminance information may obtain at least one luminance information among first luminance information corresponding to motion information in the image data and second luminance information corresponding to complexity in the image data.

[0016] The step of obtaining the above luminance information can obtain the luminance information of the image data by combining the first luminance information and the second luminance information.

[0017] The step of obtaining the luminance correction value may include identifying first selection information among the first luminance information of the display device and the first luminance information of the other display device based on a preset standard, identifying second selection information among the second luminance information of the display device and the second luminance information of the other display device, and obtaining the luminance correction value using the first selection information and the second selection information.

[0018] The step of obtaining the above luminance information may include obtaining luminance information detected by a sensor of the display device and obtaining third luminance information based on the obtained luminance information.

[0019] The step of obtaining the above luminance correction value may select one of the first value of luminance information of the display device and the second value of luminance information of the other display device based on a preset criterion, thereby obtaining a luminance correction value to be commonly applied to a plurality of display devices within the display group.

[0020] The present control method may further include a step of providing the acquired brightness correction value to the display device.

[0021] The present control method may further include a step of providing the acquired luminance correction value to another electronic device or another display device.

[0022] The present control method may further include a step of correcting an image signal to be provided to the display device in response to the acquired brightness correction value, and a step of providing the corrected image signal to the display device.

[0023] A non-transitory computer-readable recording medium storing a program for executing a control method of an electronic device connected to one display device belonging to a display group according to an embodiment of the present disclosure, the control method comprising: a step of obtaining luminance information of image data based on an image signal to be displayed on the display device; a step of obtaining luminance information of another display device within the display group; and a step of obtaining a luminance correction value to be commonly applied to a plurality of display devices within the display group based on the luminance information of the display device and the luminance information of the other display device.

[0024] The above-described and other aspects, features, and advantages of the embodiments of the present disclosure will become more apparent from the following description taken in conjunction with the accompanying drawings, in which:

[0025] FIG. 1 is a diagram illustrating the operation of a display system according to one or more embodiments of the present disclosure;

[0026] FIG. 2 is a block diagram illustrating a configuration of an electronic device according to one or more embodiments of the present disclosure;

[0027] FIG. 3 is a diagram illustrating the operation of a display system according to one or more embodiments of the present disclosure;

[0028] FIG. 4 is a drawing for explaining a display operation in a display system according to one or more embodiments of the present disclosure;

[0029] FIG. 5 is a drawing for explaining an example of an operation for calculating a correction value according to an embodiment of the present disclosure;

[0030] FIG. 6 is a drawing for explaining an example of an operation for calculating a correction value according to another embodiment of the present disclosure;

[0031] FIG. 7 is a drawing for explaining an example of an operation for calculating a correction value according to another embodiment of the present disclosure;

[0032] FIG. 8 is a drawing for explaining the configuration of a display device according to one or more embodiments of the present disclosure;

[0033] FIG. 9 is a block diagram illustrating a configuration of a display module according to one or more embodiments of the present disclosure;

[0034] FIG. 10 is a flowchart illustrating a control method according to one or more embodiments of the present disclosure;

[0035] FIG. 11 is a flowchart for explaining the control operation of an electronic device according to an embodiment of the present disclosure;

[0036] FIG. 12 is a flowchart illustrating the operation of a display module according to one embodiment of the present disclosure.

[0037] The present embodiments may be modified and have various embodiments. Specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the scope to specific embodiments, but should be understood to encompass various modifications, equivalents, and / or alternatives of the embodiments of the present disclosure. In connection with the description of the drawings, similar reference numerals may be used for similar components.

[0038] In describing the present disclosure, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present disclosure, a detailed description thereof will be omitted.

[0039] Additionally, the following embodiments may be modified in various other forms, and the scope of the technical concepts of the present disclosure is not limited to the following embodiments. Rather, these embodiments are provided to further faithfully and completely convey the technical concepts of the present disclosure to those skilled in the art.

[0040] The terminology used in this disclosure is for the purpose of describing specific embodiments only and is not intended to limit the scope of the rights. Singular expressions include plural expressions unless the context clearly dictates otherwise.

[0041] In this disclosure, expressions such as “has,” “can have,” “includes,” or “may include” indicate the presence of a corresponding feature (e.g., a component such as a number, function, operation, or part), and do not exclude the presence of additional features.

[0042] In this disclosure, expressions such as “A or B,” “at least one of A and / or B,” or “one or more of A or / and B” can include all possible combinations of the listed items. For example, “A or B,” “at least one of A and B,” or “at least one of A or B” can all refer to (1) including at least one A, (2) including at least one B, or (3) including both at least one A and at least one B.

[0043] The expressions “first,” “second,” “first,” or “second,” etc., used in this disclosure can describe various components, regardless of order and / or importance, and are only used to distinguish one component from another, but do not limit the components.

[0044] When it is said that a component (e.g., a first component) is “(operatively or communicatively) coupled with / to” or “connected to” another component (e.g., a second component), it should be understood that said component may be directly coupled to said other component, or may be coupled via another component (e.g., a third component).

[0045] On the other hand, when it is said that a component (e.g., a first component) is "directly connected" or "directly connected" to another component (e.g., a second component), it can be understood that no other component (e.g., a third component) exists between said component and said other component.

[0046] The expression "configured to" as used in the present disclosure may be used interchangeably with, for example, "suitable for," "having the capacity to," "designed to," "adapted to," "made to," or "capable of." The term "configured to" may not necessarily mean only "specifically designed to" in terms of hardware.

[0047] Instead, in some contexts, the phrase "a device configured to" may mean that the device, in conjunction with other devices or components, is "capable of" performing A, B, and C. For example, the phrase "a processor configured (or set) to perform A, B, and C" may refer to a dedicated processor (e.g., an embedded processor) for performing those operations, or a general-purpose processor (e.g., a CPU or application processor) that can perform those operations by executing one or more software programs stored in a memory device.

[0048] In the embodiments, a 'module' or 'part' performs at least one function or operation, and may be implemented as hardware or software, or as a combination of hardware and software. Furthermore, a plurality of 'modules' or 'parts' may be integrated into at least one module and implemented as at least one processor, except for a 'module' or 'part' that needs to be implemented as a specific hardware.

[0049] According to various embodiments, operations performed by a module, program or other component may be executed sequentially, in parallel, iteratively or heuristically, or at least some operations may be executed in a different order, omitted, or other operations may be added.

[0050] Meanwhile, the various elements and areas in the drawings are schematically drawn. Therefore, the technical concept of the present invention is not limited by the relative sizes or spacing depicted in the attached drawings.

[0051] Meanwhile, an electronic device according to various embodiments of the present disclosure may include, for example, at least one of a smart phone, a tablet PC, a desktop PC, a set-top box, a laptop PC, or a wearable device.

[0052] In some embodiments, the electronic device may be, for example, a television, a digital video disk (DVD) player, an audio, a refrigerator, an air conditioner, a vacuum cleaner, an oven, a microwave oven, a washing machine, an air purifier, a set-top box, a home automation control panel, a security control panel, a media box (e.g., Samsung HomeSync). TM , Apple TV TM , or Google TV TM ), game consoles (e.g. Xbox TM , PlayStation TM), may include at least one of an electronic dictionary, an electronic key, a camcorder, or an electronic picture frame. Meanwhile, among the electronic devices described above, a device having a display may be referred to as a display device. Meanwhile, the electronic device of the present disclosure may be a set-top box or a PC that provides images to a display device, even if it does not have a display.

[0053] Hereinafter, with reference to the attached drawings, embodiments according to the present disclosure will be described in detail so that a person having ordinary knowledge in the technical field to which the present disclosure pertains can easily implement the present disclosure.

[0054] FIG. 1 is a diagram illustrating the operation of a display system according to one or more embodiments of the present disclosure.

[0055] According to FIG. 1, the display system may include a display group (200) including a plurality of electronic devices (100-1, 100-2, 100-3, 100-4) and a plurality of display devices (210-1, 210-2, 210-3, 210-4).

[0056] A display group (200) according to one or more embodiments of the present disclosure may include a plurality of display devices (210-1, 210-2, 210-3, 210-4). Each of the plurality of display devices (210-1, 210-2, 210-3, 210-4) may receive an image signal corresponding to a position of each of the plurality of display devices (210-1, 210-2, 210-3, 210-4) and display the received image signal.

[0057] As illustrated in FIG. 1, it is assumed that a display group (200) includes a first display device (210-1), a second display device (210-2), a third display device (210-3), and a fourth display device (210-4), and the first display device (210-1) is located in the upper right area, the second display device (210-2) is located in the upper left area, the third display device (210-3) is located in the lower right area, and the fourth display device (210-4) is located in the lower left area, and the display group (200) displays one image.

[0058] In this case, the first display device (210-1) can display an image by receiving an image signal corresponding to the upper right area among the four-part divided image, the second display device (210-2) can display an image by receiving an image signal corresponding to the upper left area among the four-part divided image, the third display device (210-3) can display an image by receiving an image signal corresponding to the lower right area among the four-part divided image, and the fourth display device (210-4) can display an image by receiving an image signal corresponding to the lower left area.

[0059] Existing display devices can reduce power consumption by adjusting image brightness in response to ambient light when the power saving mode is set, or by adjusting image brightness in images where it is difficult for users to perceive a decrease in brightness (e.g., images with high complexity).

[0060] However, the existing method was applied independently to each individual device. Accordingly, multiple display devices (210-1, 210-2, 210-3, 210-4) individually perform brightness adjustment based on the image to be displayed, and the multiple display devices (210-1, 210-2, 210-3, 210-4) can use adjustment values ​​of different ratios.

[0061] For example, a first display device (210-1) may not have its brightness adjusted, a second display device (210-2) may have a 5% decrease, a third display device (210-3) may have a 3% decrease, and a fourth display device (210-3) may have a 3% decrease, etc., and thus, different values ​​may be used instead of a common value. In cases where the display devices operate with different values, there is a problem that the difference may be highlighted at the boundaries between the display devices.

[0062] Since the display system to which the present disclosure is applied can have a very large screen, application of a technology to reduce power consumption was necessary.

[0063] In order to solve these problems, a plurality of electronic devices (100-1, 100-2, 100-3, 100-4) connected to each of a plurality of display devices (210-1, 210-2, 210-3, 210-4) obtain brightness information of a screen to be displayed on each display device, and, through a process of sharing the obtained brightness information, calculate and use a brightness correction value to be commonly applied to a plurality of display devices within the display system.

[0064] A specific method for calculating a brightness correction value in each of the plurality of electronic devices (100-1, 100-2, 100-3, 100-4) will be described in detail in FIGS. 3 to 10 below.

[0065] Each of the plurality of display devices (210-1, 210-2, 210-3, 210-4) displays an image based on a corrected image signal to which the corresponding luminance correction value has been applied using the calculated luminance correction value, so that the display group (200) displays an image to which a common luminance correction value has been applied, thereby reducing power consumption without degrading image quality.

[0066] Additionally, the display group (200) may be referred to by various expressions representing the same or similar concepts. For example, it may be referred to by various expressions such as "digital signage device," "modular display device," "signage system," and "modular display system." However, in the present disclosure, the term "display group (200)" will be used interchangeably.

[0067] Additionally, each of the plurality of display devices (210-1, 210-2, 210-3, 210-4) may be referred to by various expressions representing the same or similar concepts. For example, the display device may be referred to by the expression "display cabinet." However, in the present disclosure, the terms "display device" will be used interchangeably.

[0068] In the present disclosure, the "edge area of ​​the display group (200)" may mean an area of ​​pixels existing at the edge of the display group (200). For example, if the display group (200) is an 8K resolution (7680 x 4320 pixel) display, the "edge area of ​​the display group (200)" may include an area where 7,680 pixels are adjacent to a horizontal bezel located at the top of the display, 7,680 pixels are adjacent to a horizontal bezel located at the bottom of the display, 4,320 pixels are adjacent to a vertical bezel located at the left side of the display, and 4,320 pixels are adjacent to a vertical bezel located at the right side of the display.

[0069] Additionally, the term "edge area" may be replaced with various expressions representing the same or similar concepts. For example, it may be replaced with various expressions such as "edge area," "corner pixel area," "edge pixel area," "border area," and "outer area." However, in the present disclosure, the term "edge area" will be used interchangeably.

[0070] Although FIG. 1 illustrates that the display group (200) includes only 2 x 2 display devices, this is only one example, and the display group (200) may include n x m display devices (n and m are natural numbers greater than or equal to 2). In addition, although FIG. 1 illustrates only four electronic devices (100-1, 100-2, 100-3, 100-4) connected to four display devices, this is only one example, and the display group (200) may be implemented with n x m electronic devices (n and m are natural numbers greater than or equal to 2).

[0071] In Fig. 1, the display group (200) is illustrated in a rectangular shape, but this is only one example, and it is obvious that the display group (200) can be implemented in various shapes, such as a diamond, a square, a curved shape, etc., depending on the shape and arrangement of the display devices included in the display group (200).

[0072] As described above, each of the plurality of electronic devices (100-1, 100-2, 100-3, 100-4) displays an image whose brightness has been corrected with a common brightness correction value among the plurality of display devices within the display group (200), thereby reducing the power consumption of the display group (200) while achieving the effect of preventing the user from perceiving a difference from the original image. In the description of FIG. 2 described below, various embodiments of the present disclosure will be described along with the configuration of each of the plurality of electronic devices (100-1, 100-2, 100-3, 100-4) according to the present disclosure.

[0073] Meanwhile, although FIG. 1 illustrates and describes the electronic device and display device as separate entities, in implementation, a single display device and a single electronic device may be implemented as a single device. Furthermore, multiple display devices and a single electronic device may be implemented as a single device.

[0074]

[0075] FIG. 2 is a block diagram illustrating a configuration of an electronic device according to one or more embodiments of the present disclosure.

[0076] According to FIG. 2, the electronic device (100-1) may include a memory (110), an interface (120), and at least one processor (130).

[0077] The memory (110) can store data necessary for implementing various embodiments of the electronic device (100-1) according to one or more embodiments of the present disclosure. The memory (110) can store luminance information generated by itself in the process described below or luminance information provided from another device.

[0078] In this disclosure, "luminance information" refers to a ratio at which the user does not perceive a decrease in luminance (or brightness) even when the luminance value (or brightness value) is adjusted by a certain ratio. This ratio can be calculated using various methods. For example, "Brightness Optimization," "Motion Lighting," and "IPS" methods can be used, and other methods may be applied in addition to the three methods described above.

[0079] Here, "Brightness Optimization" adjusts brightness based on ambient lighting conditions. Specifically, this method reflects the fact that in dark environments where the display device is placed, it is difficult for users to perceive the difference even if it operates at a lower brightness than the standard brightness. Using "Brightness Optimization," power consumption can be reduced by lowering the screen brightness (or luminance) in low-ambient lighting environments. This illuminance-based brightness adjustment algorithm can achieve energy savings of up to 25% based on 90 lux.

[0080] Additionally, "Motion Lighting" is a method that adjusts brightness based on the degree of motion (or movement) within the video. For example, this method reflects the fact that in videos with a lot of motion (e.g., gunfights, action scenes, etc.), it is difficult for users to perceive the difference even if the brightness of the video is lowered. Accordingly, in videos with little motion, the screen brightness can be left unadjusted or reduced only slightly, but in videos with a lot of motion, the screen brightness (or luminance) can be changed to reduce power consumption. At this time, motion can be calculated in various ways, and the ratio of the calculated motion value to brightness can be calculated using a linear or non-linear method. Such motion-based brightness adjustment algorithms can typically achieve energy savings of 3%.

[0081] Additionally, "IPS" is a method that adjusts brightness based on the complexity of the image. For example, in cases where the complexity of an image is high (e.g., a complex skyline), it is difficult for the user to perceive the difference even if the brightness is lowered. Accordingly, for images with low complexity, the screen brightness is not adjusted or is only slightly reduced, and for images with high complexity, the screen brightness is changed to reduce power consumption. At this time, complexity can be calculated in various ways, and the ratio of the calculated complexity value to brightness can be calculated using linear or nonlinear methods. Such a complexity-based brightness adjustment algorithm typically allows for a 5% energy savings.

[0082] The memory (110) may be implemented in the form of memory embedded in the electronic device (100-1) or may be implemented in the form of memory that can be detached from the electronic device (100-1) depending on the purpose of data storage. For example, data for driving the electronic device (100-1) may be stored in a memory embedded in the electronic device (100-1), and data for expanding the functions of the electronic device (100-1) may be stored in a memory that can be detached from the electronic device (100-1).

[0083] Meanwhile, the memory embedded in the electronic device (100-1) may be implemented as at least one of volatile memory (e.g., dynamic RAM (DRAM), static RAM (SRAM), or synchronous dynamic RAM (SDRAM)), non-volatile memory (e.g., one time programmable ROM (OTPROM), programmable ROM (PROM), erasable and programmable ROM (EPROM), electrically erasable and programmable ROM (EEPROM), mask ROM, flash ROM, flash memory (e.g., NAND flash or NOR flash), hard drive, or solid state drive (SSD)).

[0084] In addition, in the case of a memory that can be attached or detached to an electronic device (100-1), it can be implemented in the form of a memory card (e.g., CF (compact flash), SD (secure digital), Micro-SD (micro secure digital), Mini-SD (mini secure digital), xD (extreme digital), MMC (multi-media card), etc.), an external memory that can be connected to a USB port (e.g., USB memory), etc.

[0085] The memory (110) may include various instructions necessary for the operation of at least one processor (130). Here, the instructions may include instructions for calculating luminance information, instructions for sharing the calculated luminance information with other devices, instructions for calculating luminance correction values, etc.

[0086] In the present disclosure, the "luminance correction value" may be a luminance correction value that is commonly applied to multiple display devices within a display group (200). Meanwhile, although the present disclosure illustrates and describes that multiple display devices within a display group (200) use a common correction value, upon implementation, the degree of correction may be different depending on the degree of separation from the center of the display group based on the display arrangement form.

[0087] Additionally, the term "luminance correction value" may be replaced with various expressions representing the same or similar concepts. For example, it may be replaced with various expressions such as "brightness correction data," "luminance correction information," "luminance adjustment information," "luminance correction information," "brightness correction value," "common correction value," and "pixel value correction information."

[0088] The interface (120) may include a communication interface, an operation interface, and an input / output interface. The electronic device (100-1) may be connected to the display device (210-1) through the interface (120).

[0089] According to one or more embodiments, the communication interface is a configuration for performing communication with the display device (210-1) or an external source device. The communication interface may include at least one wireless communication module, at least one wired communication module, etc. Each communication module may be implemented in the form of at least one hardware chip. The wireless communication module may include at least one module among a Wi-Fi module, a Bluetooth module, an infrared communication module, or other communication modules. In addition, the communication interface may include at least one communication chip that performs communication according to various wireless communication standards such as Zigbee, 3G (3rd Generation), 3GPP (3rd Generation Partnership Project), LTE (Long Term Evolution), LTE-A (LTE Advanced), 4G (4th Generation), 5G (5th Generation), etc. The wired communication module may include, for example, at least one of a Local Area Network (LAN) module, a 3.5pi cable, an I2C, a Universal asynchronous receiver / transmitter (Uart), an HDBaseT (HDBT), an Ethernet module, a pair cable, a coaxial cable, a fiber optic cable, or an Ultra Wide-Band (UWB) module. The communication interface may be implemented in various forms in this manner to communicate with an external display device or an external source device, thereby providing a corrected video signal to the external display device.

[0090] The communication interface can transmit the calculated luminance information and / or luminance correction values, as described above, to other electronic devices or display devices. Furthermore, the communication interface can receive luminance information calculated by another device from another device, or luminance correction values ​​calculated by another device.

[0091] The operation interface is a configuration for receiving user operation input. The operation interface may include various buttons provided on the main body of the electronic device (100-1).

[0092] The input / output interface is a configuration for inputting and outputting various external signals. The input / output interface can be connected to various external memories or external sources (e.g., web servers, user terminal devices, etc.) and can input various data. The input / output interface can be implemented as at least one interface among HDMI (High Definition Multimedia Interface), MHL (Mobile High-Definition Link), USB (Universal Serial Bus), USB C-type, DP (Display Port), Thunderbolt, VGA (Video Graphics Array) port, RGB port, D-SUB (Dsubminiature), and DVI (Digital Visual Interface). At least some of the input / output interfaces may be connected to communication interfaces. For example, the input / output interface can transmit information received from an external source device to the communication interface or transmit information received through the communication interface to an external display device.

[0093] At least one processor (130) controls the overall operation of the electronic device (100-1). Specifically, at least one processor (130) is connected to the memory (110) and the interface (120), and can control the overall operation of the electronic device (100-1) by executing at least one instruction stored in the memory (110).

[0094] At least one processor (130) may be implemented as a digital signal processor (DSP) that processes a digital signal, a microprocessor, but is not limited thereto, and may include one or more of a central processing unit (CPU), a microcontroller unit (MCU), a microprocessing unit (MPU), a neural processing unit (NPU), a controller, an application processor (AP), a communication processor (CP), an ARM processor, an artificial intelligence (AI) processor, or may be defined by the relevant terms. In addition, the processor (130) may be implemented as a system on chip (SoC) having a built-in processing algorithm, a large scale integration (LSI), or may be implemented in the form of a field programmable gate array (FPGA). At least one processor (130) may perform various functions by executing computer executable instructions stored in a memory (110).

[0095] Meanwhile, during implementation, rather than performing all instructions in one of the above-described configurations, it is possible for multiple configurations to perform some operations among the instructions, that is, for multiple configurations to divide and process one instruction.

[0096] When a method according to various embodiments of the present disclosure includes multiple operations, the multiple operations may be performed by one processor or by multiple processors. At least one processor (130) may be implemented as a single core processor including one core, or may be implemented as one or more multicore processors including multiple cores (e.g., homogeneous multicores or heterogeneous multicores). Hereinafter, for convenience of explanation, at least one processor (130) will be referred to as a processor (130).

[0097] The processor (130) can determine whether brightness correction is necessary. Specifically, it can check whether the user has turned on the brightness correction function or whether operating conditions, etc., are satisfied.

[0098] If luminance correction is required, the processor (130) checks whether existing luminance correction information exists, and if there is a pre-calculated correction value, the pre-calculated correction value can be used. However, if a preset calculation cycle has elapsed or a new scene has been changed from the previous scene, the processor (130) determines that calculation of luminance information is necessary and can perform subsequent operations (i.e., updating the luminance correction value). In addition, since the previously calculated correction value cannot be applied to the current scene, the processor (130) may temporarily prevent the correction value calculated in the previous scene from being applied.

[0099] The processor (130) obtains luminance information of image data based on the image signal. Specifically, the processor (130) can calculate luminance information according to the "Motion Lighting" and / or "IPS" method based on the image signal as described above. For example, when the processor uses two methods such as "Motion Lighting" and "IPS", it can obtain first luminance information corresponding to motion information in the image data and / or second luminance information corresponding to complexity in the image data, respectively.

[0100] And the processor (130) can obtain the illumination information generated by the sensor equipped in the display device from the display device, and calculate the brightness information of the “Brightness Optimization” method based on the obtained illumination information.

[0101] The processor (130) obtains luminance information from other electronic devices (100-2, 100-3, 100-4) within the display group. Specifically, the processor (130) can obtain luminance information from other display devices via a communication interface. In response, the processor (130) can also transmit the luminance information it has generated to other electronic devices (100-2, 100-3, 100-4).

[0102] The processor (130) can obtain a brightness correction value to be commonly applied to multiple display devices within a display group based on brightness information of the display device and brightness information of other display devices.

[0103] For example, when only one algorithm is used or when each display device calculates and provides brightness information as a single value even when using multiple algorithms, the processor (130) can select brightness information with the highest ratio among the multiple pieces of brightness information and determine a numerical value corresponding to the selected brightness information as a brightness correction value.

[0104] Additionally, during implementation, a luminance correction value can be obtained through an operation such as averaging the values ​​within multiple luminance information. Furthermore, to prevent flicker, the luminance correction value (or luminance information) described above may have a lower limit (or filtering value), and both previous and current calculations may be used together. For example, the following calculation formula may be used.

[0105] AI Engersy Saving = (alpha)* Current_ AI Energy Saving + (1- alpha) * Pre_AI Energy Saving

[0106] AI Energy Saving is the luminance correction value to be applied to the system, Current_ AI Energy Saving is the currently calculated luminance correction value, Pre_ AI Energy Saving is the previously calculated luminance correction value, and alpha is a ratio value between 0 and 1.

[0107] Meanwhile, when multiple pieces of luminance information are collected according to multiple algorithms, the processor (130) may identify luminance information to be applied for each algorithm and obtain a luminance correction value based on a combination of the identified luminance information. For example, the processor (130) may identify first selection information among the first luminance information of the display device and the first luminance information of another display device based on a preset standard, identify second selection information among the second luminance information of the display device and the second luminance information of another display device, and obtain a luminance correction value using the first selection information and the second selection information.

[0108] When such a luminance correction value is identified, the processor (130) can cause the display device (210-1) to display an image that reflects the luminance correction value. This application can be implemented in two ways. If the display device (210-1) is capable of luminance correction, etc. on its own, the processor (130) can control the communication interface to transmit the acquired luminance correction value to the display device. In this case, a method may be used in which only one electronic device (100-1) within the display group calculates the luminance correction value and provides the calculated luminance correction value to all display devices (200-1, 200-2, 200-3, 200-4).

[0109] Alternatively, the processor (130) may correct an image signal to be provided to the display device (210-1) based on the acquired luminance correction value, and provide the corrected image signal to the display device (210-1) through the interface (120).

[0110] Meanwhile, although the above description assumes that four electronic devices individually calculate and use luminance correction values, implementation may also utilize a method in which only one electronic device within a display group collects luminance information, calculates a luminance correction value, and provides the calculated luminance correction value to other electronic devices. In other words, one electronic device among multiple electronic devices operates as a master, and the remaining devices operate as slaves.

[0111] The description of FIG. 3 described below will describe in detail how the electronic device (100-1) provides a corrected image signal to the display device (210-1).

[0112]

[0113] FIG. 3 is a diagram illustrating the operation of a display system according to one or more embodiments of the present disclosure.

[0114] According to FIG. 3, the external source device (300) can store software for managing and controlling the display group (200). The external source device (300) can receive information about the plurality of display devices (210-1, 210-2, 210-3, 210-4, …, 210-n) from the plurality of electronic devices (100-1, 100-2, 100-3, 100-4, …, 100-n), and the external source device (300) can identify the shape of the display group (200), the overall resolution, and the position of the display device (210-1) using the software for managing the display group (200).

[0115] Here, “shape information of the display group (200)” may include information on the number of display devices included in the display group (200), information on which shape the shape of the display group (200) corresponds to, etc.

[0116] And, “total resolution information of the display group (200)” may include information on the number of pixels included in the display group (200), pixel pitch, and arrangement status of pixels.

[0117] And, the “position information of the display device (210-1)” may include information about the position of the display device (210-1) within the display group (200). For example, returning to FIG. 1, the “position information of the display device (210-1)” may include information about the upper left position of the display group (200).

[0118] Based on such information, the external source device (300) can generate a partial image to be provided to each electronic device (100-1) based on the shape information of the identified display group (200), the overall resolution information, and the location information of the display device (210-1), and provide the partial image to the electronic device (100-1).

[0119] A plurality of electronic devices (100-1, 100-2, 100-3, 100-4,…, 100-n) can receive a video signal from an external source device (300) and provide a corrected video signal to a plurality of display devices (210-1, 210-2, 210-3, 210-4,…, 210-n) included in a display group (200).

[0120] The method by which each of the plurality of electronic devices (100-1, 100-2, 100-3, 100-4, …, 100-n) provides a corrected image signal to each of the plurality of display devices (210-1, 210-2, 210-3, 210-4, …, 210-n) is the same, and for convenience of explanation, the following description will be based on the method by which the electronic device (100-1) provides a corrected image signal to the display device (210-1).

[0121] The electronic device (100-1) can obtain a partial image corresponding to an area to be displayed by the display device (210-1) among the entire image from an external source device (300). In addition, the electronic device (100-1) can obtain luminance information for the corresponding partial image.

[0122] This same operation is performed in the same manner in other electronic devices (100-2, 100-3, 100-4), so that the electronic devices (100-1, 100-2, 100-3, 100-4) within the display group can share luminance information about images to be displayed on each display device.

[0123] Accordingly, each electronic device can obtain luminance information that it has produced itself and luminance information produced by other electronic devices, and based on this, obtain a luminance correction value to be commonly applied to all display devices within the display group.

[0124] In FIG. 3, the external source device (300) is illustrated as a desktop PC, but this is only one example, and the external source device (300) can be implemented as various electronic devices capable of providing original video signals to electronic devices (100-1), such as smartphones, laptop PCs, tablet PCs, and server devices.

[0125] Although the above description only explains that the electronic device (100-1) can identify the degree of separation from the center for each of the plurality of pixels included in the display device (210-1) in units of mm or pixels, the electronic device (100-1) can also calculate the degree of separation from the center by normalizing the distance identified in units of mm or pixels to a value between 0 and 1.

[0126] While one or more embodiments have been described and illustrated as a source device providing a partial image to each electronic device, in implementation, the source device may provide the entire image to each electronic device. That is, the process of cropping or extracting a partial image from the entire image may also be performed by each electronic device. An example of this is described below in FIG. 10.

[0127]

[0128] FIG. 4 is a diagram for explaining a display operation in a display system according to one or more embodiments of the present disclosure.

[0129] Referring to FIG. 4, one content image can be displayed by four display devices (210-1, 210-2, 210-3, 210-4) displaying individual partial images.

[0130] Here, the third sub-region may contain a major object, and thus may have a higher degree of motion or higher image complexity than other sub-regions. Therefore, if IPS and motion lighting are calculated separately for each sub-region, only the third sub-region may produce brightness information at a low ratio (e.g., 0.7), and the remaining sub-regions may produce brightness information at a relatively high ratio (e.g., 0.9). If the brightness of these four sub-regions is controlled with individual values, only the third display device (210-3) displaying the third sub-region among the four sub-regions will adjust the brightness at a low ratio. Therefore, the viewer will watch an image in which only a part of the entire image (i.e., the third sub-region) is darkened. In particular, the difference will be prominent at the top of the second sub-region, which is right of the third sub-region, and the right border of the second sub-region.

[0131] When this happens, the screen's sense of unity is broken, giving the user the impression that the picture quality is poor.

[0132] Also, conversely, if the main object moves from the third sub-area to the fourth sub-area, at this point only the fourth sub-area (200-4) will have a lower brightness value than the other sub-areas.

[0133] To solve these problems, as described above, in the present disclosure, luminance information is calculated from each electronic device, the calculated luminance information is shared with each other, and each electronic device obtains and uses a common luminance correction value using the shared luminance information.

[0134] Through this operation, all first to fourth sub-areas can operate with brightness corrected at a common ratio. Below, a method for calculating specific brightness correction values ​​is described.

[0135]

[0136] FIG. 5 is a drawing for explaining an example of an operation for calculating a correction value according to another embodiment of the present disclosure.

[0137] Referring to Figure 5, all three brightness adjustment algorithms are utilized. For example, each of the four electronic devices can generate first correction information, second correction information, and third correction information, and share the generated information with other electronic devices.

[0138] With this shared information, each electronic device can calculate a compensation value for each item to be applied to the entire system. For example, for IPS, each device can select 1, the highest complexity value among the four devices. For Motion Lighting, each device can select 0.7, the highest complexity value among the four devices. Furthermore, for Brightness Optimization, each device can select 0.93, the highest value among the four devices.

[0139] By multiplying each selected value in this way, a final luminance correction value of 0.651 can be calculated. Since each electronic device will calculate the luminance correction value using a common algorithm (i.e., a common calculation method), it can produce the same luminance correction value.

[0140] While the above description uses the highest value for a single piece of information (or algorithm), the average can be used during implementation. Furthermore, while the highest value for all four pieces of information was used, it's also possible to use the highest value for some configurations and the average for others.

[0141] While the four pieces of information are illustrated and described as being combined, it is also possible to use only two or one of the above-described pieces of information. Furthermore, it is also possible to use other pieces of information (or brightness adjustment algorithms) not illustrated.

[0142] In addition, in the process of combining multiple pieces of information, although the method of multiplying the selected values ​​was used in the above, it is also possible to assign weights to each item during implementation and to calculate the final brightness correction value using the weighted values.

[0143]

[0144] FIG. 6 is a drawing for explaining an example of an operation for calculating a correction value according to another embodiment of the present disclosure.

[0145] Referring to Figure 6, all three brightness adjustment algorithms are utilized. For example, each of the four electronic devices can individually generate first correction information, second correction information, and third correction information, generate a single individual device correction information by combining the three generated correction information, and share the individual device correction information.

[0146] In this way, when the individual device correction information individually calculated by each electronic device is shared, each electronic device can obtain a brightness correction value by selecting the correction information with the highest value among the correction information.

[0147]

[0148] FIG. 7 is a drawing for explaining an example of an operation for calculating a correction value according to another embodiment of the present disclosure.

[0149] Referring to Figure 7, all three brightness adjustment algorithms are utilized. For example, each of the four electronic devices can individually generate first and second correction information, generate individual device correction information by combining the generated correction information, and share the individual device correction information.

[0150] Third correction information corresponding to the illuminance level can be separately acquired. This third correction information can be shared by having one electronic device acquire illuminance information from each display device and share it, or by having each electronic device acquire illuminance information from a connected display device and share the acquired illuminance information. Furthermore, one of the display devices can collate illuminance information from other display devices and provide the collated illuminance information to one electronic device or to each electronic device.

[0151] In this way, when individual device correction information individually calculated by each electronic device is shared, the correction information having the highest value among the correction information is selected, and a luminance correction value can be obtained through calculation with the high value corresponding to the third correction information.

[0152]

[0153] FIG. 8 is a drawing for explaining the configuration of a display device according to one or more embodiments of the present disclosure.

[0154] According to FIG. 8, the display device (210-1) may include a plurality of display modules (211, 212, 213, 214).

[0155] Each of the plurality of display modules (211, 212, 213, 214) may include a plurality of LED elements. Here, each of the plurality of LED elements may be implemented as an element that implements a red LED, a green LED, and a blue LED as a single pixel. In addition, the plurality of LED elements may be implemented as micro LEDs. Micro LEDs are ultra-small light-emitting elements that emit light on their own without a color filter, and are LEDs with a size of about 5 to 100 micrometers.

[0156] The display device (210-1) may include a plurality of coupling members that can be coupled with other display devices. Accordingly, the display device (210-1) may be coupled with other display devices to form a display group (200).

[0157] The display device (210-1) can be implemented in a bezel-less form, so that it can be combined with other display devices to form a display group (200) and display an image without interruption even when displaying a single image.

[0158] Although the display device (210-1) is illustrated in FIG. 8 as including 2 x 2 display modules, this is only one example, and the display device (210-1) may of course be configured with n x m display modules (n and m are natural numbers greater than or equal to 2).

[0159] The description of FIG. 9 described below will specifically explain how the display device (210-1) displays an image.

[0160] According to FIG. 9, a display module (211) included in a display device (210-1) may include a driving unit (220), a plurality of LED driving circuits (230), and a plurality of LED elements (240).

[0161] The driving unit (220) may include an interface (221), a processor (222), and a sensor (223).

[0162] The interface (221) can receive a video signal or provide an illuminance value detected by a sensor described below to the electronic device (100). Alternatively, the interface (221) can receive a luminance correction value from the electronic device (100).

[0163] The sensor (223) can detect illuminance. Such a sensor (223) can be placed on the side (edge ​​area) of the display device when positioned in the front direction as shown in FIG. 8.

[0164] The processor (222) can generate a PWM signal corresponding to a brightness value corresponding to each of a plurality of LED elements (240) and provide the PWM signal to a plurality of LED driving circuits (230). At this time, the processor (222) can generate a PWM signal corresponding to the brightness correction value and the image signal based on the brightness correction value and provide the PWM signal to a plurality of LED driving circuits (230).

[0165] For example, if the image signal includes information to cause the first pixel to emit light with a luminance value of “(R, G, B) = (150, 100, 50),” the processor (222) can generate a PWM signal to cause the red LED element included in the first pixel to emit light with a luminance value of 150, the green LED element included in the first pixel to emit light with a luminance value of 100, and the blue LED element included in the first pixel to emit light with a luminance value of 50, and provide the PWM signal to the LED driving circuit connected to the first pixel.

[0166] In this case, if the luminance correction value is a value such as 0.8, the luminance values ​​of individual elements can be adjusted, such as (120, 80, 40), and a PWM signal corresponding to the adjusted luminance value can be generated. Meanwhile, although the luminance correction value described above is expressed as a real number in the range of 0 to 1, it can be information expressed as a binary number such as 8 bits or 16 bits when implemented.

[0167] In the above description, the driving unit (220) is described as including only the interface (211), the processor (222), and the sensor (223), but it may further include a timing controller, a data driving unit, a gate driving unit, etc.

[0168] The timing controller can receive input signals (IS), horizontal synchronization signals (Hsync), vertical synchronization signals (Vsync), and main clock signals (MCLK) from the outside, and generate image data signals, scan control signals, data control signals, and light emission control signals, and provide them to a substrate, data driver, gate driver, etc.

[0169] In particular, the timing controller can apply at least one of various signals (Emi, Vsweep, Vini, VST, Test / Discharging) to the plurality of LED driving circuits (230). In addition, the timing controller can also apply a control signal (MUX Sel R, G, B) for selecting one of the R, G, and B sub-pixels to the plurality of LED driving circuits (230).

[0170] The data driver (or source driver, data driver) is a means for generating a data signal, and can receive image data of R / G / B components, etc., and generate a data voltage (e.g., PWM data voltage).

[0171] The gate driver (or gate driver) is a means for generating various control signals, such as a control signal (SPWM(n)) and a control signal (SPAM). The gate driver can input the generated various control signals to LED driving circuits corresponding to a specific row (or a specific horizontal line) among a plurality of pixels on the substrate, but is not limited thereto.

[0172] The gate driver may, depending on the embodiment, apply a driving voltage (VDD) to the driving voltage terminal of the LED driving circuit.

[0173] The data driver and the gate driver may be implemented so that all or part of them are included in a TFT (Thin Film Transistor) layer formed on one side of the glass of the substrate, or may be implemented as a separate semiconductor IC and placed on the other side of the glass.

[0174] A plurality of LED driving circuits (230) can receive PWM data voltage in the scanning section.

[0175] And, the plurality of LED driving circuits (230) can drive the plurality of LED elements (240) by providing driving current to the plurality of light-emitting elements for a time corresponding to the input PWM data voltage in the emission section.

[0176] As described above, the display device (210-1) includes a plurality of display modules (211, 212, 213, 214), and each of the plurality of display modules (211, 212, 213, 214) includes a driving unit (220), a plurality of LED driving circuits (230), and a plurality of LED elements (240), and can generate a PWM signal based on a corrected image signal received from the electronic device (100-1) to display an image with a corrected brightness value.

[0177]

[0178] FIG. 10 is a drawing for explaining the operation of a display system according to another embodiment of the present disclosure.

[0179] In FIG. 3, the location information is stored by an external source device (300) and a partial image of the original image is provided to each electronic device (100-1, 100-2, 100-3, 100-4), but in FIG. 10, the above information is stored by each electronic device, and the generation of the partial image is also performed by each electronic device.

[0180] Referring to FIG. 10, an external source device (300) can provide image data to each electronic device (100-1, 100-2, 100-3, 100-4). This external source device (300) does not require special functions as shown in FIG. 3, and may be a general server device or broadcasting station.

[0181] For example, these external source devices can provide high-resolution images, such as 8K, to each electronic device (100-1, 100-2, 100-3, 100-4).

[0182] Each electronic device (100-1, 100-2, 100-3, 100-4) can generate an image to be provided to each display device (210-1, 210-2, 210-3, 210-4) based on its own location information.

[0183] In addition, each electronic device (100-1, 100-2, 100-3, 100-4) can obtain a luminance correction value. Specifically, in FIG. 3, since each electronic device can obtain only a partial image and not the entire image, a method of calculating luminance information for the partial image and sharing the calculated luminance information was used, but in FIG. 10, since each electronic device can obtain the entire image, a luminance correction value can be calculated directly through the obtained entire image.

[0184] However, since the brightness value may be different for each device based on the light sensor, each electronic device (100-1, 100-2, 100-3, 100-4) can calculate the brightness correction value using the method illustrated in FIG. 7. That is, the entire image is used to calculate the correction information for "Motion Lighting" and "IPS," and the brightness information corresponding to "Brightness Optimization" based on the light value obtained from each display device separately is calculated, and the two pieces of information are combined to calculate the brightness correction value.

[0185] Meanwhile, during implementation, a method may be used in which only one of the plurality of electronic devices performs the above-described operation to obtain a luminance correction value, and one electronic device provides the luminance correction values ​​to all four display devices.

[0186]

[0187] FIG. 11 is a flowchart for explaining a control operation of an electronic device according to an embodiment of the present disclosure.

[0188] First, luminance information of the image data is acquired based on the image signal to be displayed on the display device. For example, at least one luminance information may be acquired among first luminance information corresponding to motion information within the image data and second luminance information corresponding to complexity within the image data. If multiple luminance information pieces are used, the two luminance information pieces may be combined (or multiplied) and used.

[0189] Additionally, as luminance information, it is possible to obtain illuminance information detected by a sensor of a display device and use third luminance information based on the obtained illuminance information.

[0190] And, luminance information of other display devices within the display group is acquired (S1120).

[0191] A brightness correction value to be commonly applied to multiple display devices within a display group is obtained based on the brightness information of the display device and the brightness information of other display devices (S1030). For example, based on a preset standard, first selection information is identified among the first brightness information of the display device and the first brightness information of other display devices, second selection information is identified among the second brightness information of the display device and the second brightness information of other display devices, and a brightness correction value is obtained using the first selection information and the second selection information.

[0192] In addition, a first value of the luminance information of a display device and one of the second values ​​of the luminance information of another display device can be selected based on a preset criterion, thereby obtaining a luminance correction value to be commonly applied to multiple display devices within a display group.

[0193] The electronic device can then apply the acquired luminance correction value (S1140). For example, the acquired luminance correction value can be provided to the display device. Alternatively, the electronic device can compensate for the image signal to be provided to the display device in response to the acquired luminance correction value, and provide the compensated image signal to the display device.

[0194] The various methods described in FIG. 11 can be performed by an electronic device having the configuration shown in FIG. 2, but are not necessarily limited thereto, and can be performed by electronic devices having various configurations.

[0195] Meanwhile, in Fig. 11, the order of all steps is mapped for convenience of explanation, but it is of course not necessarily limited to the order of steps that are not related to the order or can be performed in parallel.

[0196]

[0197] FIG. 12 is a flowchart illustrating the operation of a display module according to one embodiment of the present disclosure.

[0198] Referring to FIG. 12, the display device can detect illuminance using an illuminance sensor (S1210) and transmit the detected illuminance to an electronic device (S1220). This detection operation can be performed at preset intervals or when a preset event occurs. For example, the preset event may be when the ambient illuminance changes by a certain value or more compared to the previous value.

[0199] Such light detection and transmission operations may be omitted if the brightness control algorithm using the light information is not used.

[0200] The display device can receive a luminance correction value from an electronic device (S1230). Such luminance correction value may be received from the electronic device transmitting the image data, or may be received through a separate electronic device.

[0201] And the display device can receive image data corresponding to the image (S1240).

[0202] When such image data is received, a PWM signal is generated based on the received image data and the above-described brightness compensation value, and the generated PWM signal is provided to multiple LEDs to display an image (S1250). For example, if the PWM signal generated based on the image data has a duty of 80% and the brightness compensation value has a numerical value of approximately 0.9, the display device can generate a PWM signal having a duty of approximately 0.9*0.8 = 72%.

[0203] And, if the above-described PWM signal is generated individually for each sub-pixel, the above-described method can be similarly applied to each sub-pixel.

[0204] The various methods described in FIG. 12 can be performed by an electronic device having the configuration shown in FIG. 9, but are not necessarily limited thereto, and can be performed by electronic devices having various configurations.

[0205] Meanwhile, in Fig. 12, the order of all steps is mapped for convenience of explanation, but it is of course not necessarily limited to the order of steps that are not related to the order or can be performed in parallel.

[0206] Meanwhile, the methods according to at least some of the various embodiments of the present disclosure described above may be implemented in the form of an application that can be installed on an existing electronic device.

[0207] Additionally, the methods according to at least some of the various embodiments of the present disclosure described above can be implemented with only a software upgrade or a hardware upgrade for an existing electronic device.

[0208] Additionally, the methods according to at least some of the various embodiments of the present disclosure described above may also be performed through an embedded server provided in an electronic device, or an external server of at least one of the electronic devices.

[0209] Meanwhile, according to one embodiment of the present disclosure, the various embodiments described above can be implemented as software including commands stored in a machine-readable storage medium that can be read by a machine (e.g., a computer). The device is a device that can call a command stored from the storage medium and operate according to the called command, and may include an electronic device (e.g., an electronic device (100-1), a display device (200-1)) according to the disclosed embodiments. When a command is executed by a processor, the processor can perform a function corresponding to the command directly or by using other components under the control of the processor. The command may include code generated or executed by a compiler or an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, the 'non-transitory storage medium' means that it is a tangible device and does not include a signal (e.g., an electromagnetic wave), and this term means that data is stored semi-permanently in the storage medium. There is no distinction between cases where data is stored and cases where it is temporarily stored. For example, a 'non-transitory storage medium' may include a buffer in which data is temporarily stored. According to one embodiment, the method according to various embodiments disclosed in the present document may be provided as a computer program product. The computer program product may be traded between sellers and buyers as a commodity. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read only memory (CD-ROM)), or may be distributed online (e.g., downloaded or uploaded) through an application store (e.g., Play Store™) or directly between two user devices (e.g., smartphones).In the case of online distribution, at least a portion of the computer program product (e.g., a downloadable app) may be temporarily stored or temporarily created in a device-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0210] Various embodiments of the present disclosure may be implemented as software including instructions stored in a machine-readable storage medium that can be read by a machine (e.g., a computer). The device is a device that can call instructions stored in the storage medium and operate according to the called instructions, and may include an electronic device (e.g., an electronic device (100-1)) according to the disclosed embodiments.

[0211] When the above-described instruction is executed by the processor, the processor may perform the function corresponding to the instruction directly or by utilizing other components under the control of the above-described processor. The instruction may include code generated or executed by a compiler or interpreter.

[0212] Although the preferred embodiments of the present disclosure have been illustrated and described above, the present disclosure is not limited to the specific embodiments described above, and various modifications may be made by a person having ordinary skill in the art to which the present disclosure pertains without departing from the gist of the present disclosure as claimed in the claims, and such modifications should not be understood individually from the technical idea or prospect of the present disclosure.

Claims

1. In an electronic device connected to one display device belonging to a display group, An interface for receiving a video signal to be displayed on the display device; memory that stores at least one instruction; and At least one processor configured to provide image data corresponding to the image signal to the display device by executing at least one instruction; At least one processor, Obtaining luminance information of the image data based on the image signal to be displayed on the display device, and obtaining luminance information of another display device within the display group, An electronic device that obtains a brightness correction value to be commonly applied to a plurality of display devices within the display group based on brightness information of the display device and brightness information of another display device.

2. In paragraph 1, At least one processor, An electronic device that acquires at least one luminance information among first luminance information corresponding to motion information in the image data and second luminance information corresponding to complexity in the image data.

3. In paragraph 2, At least one processor, An electronic device that obtains luminance information of the image data by combining the first luminance information and the second luminance information.

4. In paragraph 3, At least one processor, An electronic device that identifies first selection information among first luminance information of the display device and first luminance information of the other display device based on preset criteria, identifies second selection information among second luminance information of the display device and second luminance information of the other display device, and obtains a luminance correction value using the first selection information and the second selection information.

5. In paragraph 1, At least one processor, An electronic device that acquires illuminance information detected by a sensor of the display device and acquires third luminance information based on the acquired illuminance information.

6. In paragraph 1, At least one processor, An electronic device that selects one of the first value of the brightness information of the display device and the second value of the brightness information of the other display device based on a preset criterion, and obtains a brightness correction value to be commonly applied to a plurality of display devices within the display group.

7. In paragraph 1, At least one processor, An electronic device that controls the interface to provide the acquired luminance correction value to the display device.

8. In paragraph 7, The above interface is, Includes a communication interface for transmitting and receiving information with other electronic devices or other display devices within the display group, At least one processor, An electronic device that controls the communication interface to provide the acquired brightness correction value to another electronic device or another display device.

9. In paragraph 1, At least one processor, An electronic device that corrects an image signal to be provided to the display device in response to the acquired luminance correction value, and controls the interface so that the corrected image signal is provided to the display device.

10. In paragraph 1, At least one processor, An electronic device that stores the acquired luminance correction value in the memory and updates the luminance correction value when the scene of the image data changes or a preset cycle elapses.

11. A method for controlling an electronic device connected to a display device belonging to a display group, A step of obtaining brightness information of the image data based on an image signal to be displayed on the display device; A step of obtaining luminance information of another display device within the above display group; and A control method comprising: a step of obtaining a brightness correction value to be commonly applied to a plurality of display devices within the display group based on brightness information of the display device and brightness information of another display device.

12. In paragraph 11, The step of obtaining the above luminance information is: A control method for obtaining at least one luminance information among first luminance information corresponding to motion information in the image data and second luminance information corresponding to complexity in the image data.

13. In paragraph 12, The step of obtaining the above luminance information is: A control method for obtaining luminance information of the image data by combining the first luminance information and the second luminance information.

14. In paragraph 13, The step of obtaining the above brightness correction value is: A control method for identifying first selection information among first luminance information of the display device and first luminance information of the other display device based on preset criteria, identifying second selection information among second luminance information of the display device and second luminance information of the other display device, and obtaining a luminance correction value using the first selection information and the second selection information.

15. A non-transitory computer-readable recording medium storing a program for executing a control method of an electronic device connected to a display device belonging to a display group, The above control method is, A step of obtaining brightness information of the image data based on an image signal to be displayed on the display device; A step of obtaining luminance information of another display device within the above display group; and A recording medium comprising a step of obtaining a brightness correction value to be commonly applied to a plurality of display devices within the display group based on brightness information of the display device and brightness information of another display device.

Images