Method, apparatus, electronic device and storage medium for LED display calibration

Abstract

The present application relates to a method, device, electronic device and storage medium for correcting an LED display screen, and relates to the technical field of LED display screens. The method includes: obtaining historical brightness information and historical temperature information respectively corresponding to each display area in the LED display screen in each preset time period, determining a brightness reduction rate respectively corresponding to each display area in each preset time period based on the historical brightness information respectively corresponding to each display area in each preset time period, determining a second temperature corresponding to the LED display screen based on the historical temperature information and the brightness reduction rate respectively corresponding to each display area in each preset time period, obtaining the current temperature corresponding to the LED display screen, and outputting a temperature reduction instruction when the current temperature is greater than the second temperature. The method, device, electronic device and storage medium for correcting an LED display screen provided by the present application can reduce the dot-by-dot correction frequency of the LED display screen.

Description

Technical Field

[0001] The present application relates to the technical field of LED display screens, and in particular, to a method, device, electronic device, and storage medium for correcting an LED display screen. Background Art

[0002] With the development of science and technology, light-emitting diode (LED) display screens are increasingly widely used. An LED display screen is a flat display screen composed of light-emitting diode dot matrix modules or pixel units, and the brightness of each pixel is controlled through a control circuit and a driving circuit. During the use of an LED display screen, the brightness attenuation amplitudes of red, green, and blue of the LED display screen are inconsistent, resulting in inconsistent colors of the LED display screen, that is, the uniformity of the LED display screen decreases. When it is detected that the brightness of the LED display screen is uneven, the LED display screen can be corrected by point-by-point correction. Point-by-point correction is to reduce the brightness of the light points of the LED display screen to the same brightness.

[0003] With long-term use, the brightness of the LED display screen continuously attenuates, and the increase in temperature will also affect the brightness attenuation rate of the LED display screen. Each time the brightness of the LED display screen is corrected, the brightness will decrease once. As people's requirements for LED display screens are getting higher and higher, how to reduce the point-by-point correction frequency of the LED display screen is becoming increasingly important. Summary of the Invention

[0004] To reduce the frequency of point-by-point correction, the present application provides a method, device, electronic device, and storage medium for correcting an LED display screen.

[0005] The above-mentioned invention object of the present application is achieved through the following technical solutions:

[0006] In a first aspect, a method for correcting an LED display screen is provided. The method includes:

[0007] Obtain the historical brightness information corresponding to each display area of the LED display screen in each preset time period. The historical brightness information includes: a relationship curve between the brightness of the display area and time. The LED display screen includes at least two display areas;

[0008] Based on the historical brightness information corresponding to each display area in each preset time period, determine the brightness reduction rate corresponding to each display area in each preset time period;

[0009] Obtain the historical temperature information corresponding to each display area in each preset time period. The historical temperature information corresponding to any display area includes: the average temperature of any display area in the corresponding preset time period;

[0010] Based on the brightness reduction rate and historical temperature information respectively corresponding to each display area in each preset time period, determine the first temperature corresponding to each display area, where the first temperature is the historical temperature information corresponding to the minimum value of the brightness reduction rate respectively corresponding to the corresponding display area in each preset time period;

[0011] Determine the second temperature corresponding to the LED display screen based on each of the first temperatures;

[0012] Obtain the current temperature corresponding to the LED display screen;

[0013] If the current temperature is greater than the second temperature, output a cooling instruction, where the cooling instruction is used to control a cooling device to cool the LED display screen to the current temperature.

[0014] By adopting the above technical solutions, by obtaining the historical brightness information respectively corresponding to each display area in the LED display screen in each preset time period, where the historical brightness information includes: the relationship curve between the brightness of the display area and time, the LED display screen includes at least two display areas, based on the historical brightness information respectively corresponding to each display area in each preset time period, determine the brightness reduction rate respectively corresponding to each display area in each preset time period. After determining the brightness reduction rate, obtain the historical temperature information respectively corresponding to the display area in each preset time period, where the historical temperature information corresponding to any display area includes: the average temperature of any display area in the corresponding preset time period, and based on the brightness reduction rate and historical temperature information respectively corresponding to each display area in each preset time period, determine the first temperature corresponding to each display area, where the first temperature is the historical temperature information corresponding to the minimum value of the brightness reduction rate respectively corresponding to the corresponding display area in each preset time period, determine the second temperature corresponding to the LED display screen based on each of the first temperatures, where the second temperature is the temperature corresponding to when the brightness attenuation rate of the LED display screen is slower, then obtain the current temperature corresponding to the LED display screen. If the current temperature is greater than the display temperature, output a cooling instruction, where the cooling instruction is used to control a cooling device to cool the LED display screen to the second temperature. When the temperature of the LED display screen rises, adjust the temperature of the LED display screen to reduce the brightness attenuation rate of the LED display screen, thereby reducing the per-point correction frequency of the LED display screen.

[0015] In a possible implementation manner, the determining the brightness reduction rate respectively corresponding to each display area in each preset time period based on the historical brightness information respectively corresponding to each display area in each preset time period includes: based on the relationship curve between the brightness and time respectively corresponding to each display area in each preset time period, determine the brightness change value and time change value respectively corresponding to each display area in each preset time period;

[0016] Based on the brightness change values and the time change values respectively corresponding to each display area in each preset time period, determine the brightness reduction rate respectively corresponding to each display area in each preset time period.

[0017] In another possible implementation, the relationship curve between the brightness of the display area and time includes: the relationship curve between the red brightness of the display area and time, the relationship curve between the green brightness of the display area and time, and the relationship curve between the blue brightness of the display area and time;

[0018] The determining the brightness change values respectively corresponding to each display area in each preset time period based on the relationship curve between the brightness and time respectively corresponding to each display area in each preset time period includes:

[0019] Based on the relationship curve between the red brightness and time respectively corresponding to each display area in each preset time period, determine the red brightness change values respectively corresponding to each display area in each of the preset time periods;

[0020] Based on the relationship curve between the green brightness and time respectively corresponding to each display area in each preset time period, determine the green brightness change values respectively corresponding to each display area in each of the preset time periods;

[0021] Based on the relationship curve between the blue brightness and time of the display area, determine the blue brightness change values respectively corresponding to each display area in each of the preset time periods;

[0022] Based on a preset change weight and the red change values, green change values, and blue change values respectively corresponding to each display area in each of the preset time periods, determine the brightness change values respectively corresponding to each display area in each of the preset time periods.

[0023] In another possible implementation, the determining the first temperature corresponding to each display area based on the brightness reduction rate and historical temperature information respectively corresponding to each display area in each preset time period includes:

[0024] Based on the brightness reduction rate respectively corresponding to each display area in each preset time period, determine the minimum brightness reduction rate corresponding to each display area;

[0025] Based on the minimum brightness reduction rate, the preset time period, and the average temperature respectively corresponding to each display area in each preset time period, determine the first temperature corresponding to each display area.

[0026] In another possible implementation, determining the second temperature corresponding to the LED display based on each of the first temperatures includes:

[0027] Calculating the average temperature of each of the regional temperatures and determining the average temperature as the display temperature of the LED display; or,

[0028] Determining the minimum regional temperature based on each of the regional temperatures and determining the minimum regional temperature as the corresponding display temperature of the LED display.

[0029] In another possible implementation, the method further includes:

[0030] Obtaining the current brightness corresponding to each of the display regions;

[0031] Determining the number of display regions where the current brightness is less than a preset brightness based on the current brightness;

[0032] If the number of display regions is greater than a preset number, determining the LED display as a faulty display.

[0033] In another possible implementation, the method further includes:

[0034] Obtaining the current working duration of the LED display;

[0035] Determining a current temperature difference based on the current temperature and the display temperature;

[0036] Determining the shutdown duration of the LED display based on the current working duration, the current temperature difference, and a preset shutdown weight.

[0037] In a second aspect, there is provided an apparatus for calibrating an LED display, the apparatus including:

[0038] A first acquisition module, configured to acquire historical brightness information corresponding to each display region in the LED display at each preset time period, where the historical brightness information includes: a relationship curve between the brightness of the display region and time, and the LED display includes at least two display regions;

[0039] A first determination module, configured to determine the brightness reduction rate corresponding to each display region at each preset time period based on the historical brightness information corresponding to each display region at each preset time period;

[0040] A second acquisition module, configured to acquire historical temperature information corresponding to each display region at each preset time period, where the historical temperature information corresponding to any display region includes: the average temperature of any display region in the corresponding preset time period;

[0041] A second determination module, configured to determine a first temperature corresponding to each display area based on the brightness reduction rate and historical temperature information respectively corresponding to each display area in each preset time period, where the first temperature is the historical temperature information corresponding to the minimum value of the brightness reduction rate respectively corresponding to the corresponding display area in each preset time period;

[0042] A third determination module, configured to determine a second temperature corresponding to the LED display screen based on each of the first temperatures;

[0043] A third acquisition module, configured to acquire the current temperature corresponding to the LED display screen;

[0044] An output module, configured to output a cooling instruction when the current temperature is greater than the second temperature, where the cooling instruction is used to control a cooling device to cool the LED display screen to the current temperature.

[0045] In a possible implementation manner, when the first determination module determines the brightness reduction rate respectively corresponding to each display area in each preset time period based on the historical brightness information respectively corresponding to each display area in each preset time period, it specifically is configured to:

[0046] Based on the relationship curve of brightness and time respectively corresponding to each display area in each preset time period, determine the brightness change value and time change value respectively corresponding to each display area in each preset time period;

[0047] Based on the brightness change value and the time change value respectively corresponding to each display area in each preset time period, determine the brightness reduction rate respectively corresponding to each display area in each preset time period.

[0048] In another possible implementation manner, the relationship curve of the brightness and time of the display area includes: the relationship curve of the red brightness and time of the display area, the relationship curve of the green brightness and time of the display area, and the relationship curve of the blue brightness and time of the display area;

[0049] When the first determination module determines the brightness change value respectively corresponding to each display area in each preset time period based on the relationship curve of the brightness and time of the display area, it specifically is configured to:

[0050] Based on the relationship curve of the red brightness and time respectively corresponding to each display area in each preset time period, determine the red brightness change value respectively corresponding to each display area in each of the preset time periods;

[0051] Based on the relationship curves of the green brightness and time corresponding to each display area in each preset time period, determine the green brightness change values corresponding to each display area in each of the preset time periods;

[0052] Based on the relationship curves of the blue brightness and time corresponding to each display area in each preset time period, determine the blue brightness change values corresponding to each display area in each of the preset time periods;

[0053] Based on the preset change weights and the red change values, green change values, and blue change values corresponding to each display area in each of the preset time periods, determine the brightness change values corresponding to each display area in each of the preset time periods.

[0054] In another possible implementation manner, when the second determination module determines the first temperature corresponding to each display area based on the brightness reduction rate and historical temperature information corresponding to each display area in each preset time period, it specifically is used for:

[0055] Based on the brightness reduction rates corresponding to each display area in each preset time period, determine the minimum brightness reduction rate corresponding to each display area;

[0056] Based on the minimum brightness reduction rate, the preset time period, and the average temperature corresponding to each display area in each preset time period, determine the first temperature corresponding to each display area.

[0057] In another possible implementation manner, when the third determination module determines the second temperature corresponding to the LED display screen based on each of the first temperatures, it specifically is used for:

[0058] Calculate the average temperature of each of the area temperatures, and determine the average temperature as the display temperature of the LED display screen; or,

[0059] Based on each of the area temperatures, determine the minimum area temperature, and determine the minimum area temperature as the corresponding display temperature of the LED display screen.

[0060] In another possible implementation manner, the device further includes: a fourth acquisition module, a fourth determination module, and a fifth determination module, where

[0061] The fourth acquisition module is used to acquire the current brightness corresponding to each of the display areas;

[0062] The fourth determination module is configured to determine the number of display areas where the current brightness is less than a preset brightness based on the current brightness; the fifth determination module is configured to determine that the LED display screen is a faulty display screen when the number of display areas is greater than a preset number.

[0063] In another possible implementation, the device further includes: a fifth acquisition module, a sixth determination module, and a seventh determination module, where,

[0064] The fifth acquisition module is configured to acquire the current working duration of the LED display screen;

[0065] The sixth determination module is configured to determine a current temperature difference based on the current temperature and the display temperature;

[0066] The seventh determination module is configured to determine the shutdown duration of the LED display screen based on the current working duration, the current temperature difference, and a preset shutdown weight.

[0067] In a third aspect, an electronic device is provided, and the electronic device includes:

[0068] One or more processors;

[0069] A memory;

[0070] One or more applications, where the one or more applications are stored in the memory and are configured to be executed by the one or more processors, and the one or more applications are configured to: execute the operations corresponding to the method for correcting an LED display screen shown in any possible implementation of the first aspect.

[0071] In a fourth aspect, a computer-readable storage medium is provided, and the storage medium stores at least one instruction, at least one segment of program, a code set, or an instruction set, and the at least one instruction, at least one segment of program, the code set, or the instruction set is loaded and executed by a processor to implement the method for correcting an LED display screen shown in any possible implementation of the first aspect.

[0072] In summary, the present application includes at least one of the following beneficial technical effects:

[0073] The present application provides a method, device, electronic device and storage medium for correcting an LED display screen. Compared with the related art, in the present application, by obtaining the historical brightness information corresponding to each display area in the LED display screen in each preset time period, where the historical brightness information includes: the relationship curve between the brightness of the display area and time, and the LED display screen includes at least two display areas, based on the historical brightness information corresponding to each display area in each preset time period, determine the brightness reduction rate corresponding to each display area in each preset time period. After determining the brightness reduction rate, obtain the historical temperature information corresponding to the display area in each preset time period, where the historical temperature information corresponding to any display area includes: the average temperature of any display area in the corresponding preset time period, and based on the brightness reduction rate and historical temperature information corresponding to each display area in each preset time period, determine the first temperature corresponding to each display area, and the first temperature is the historical temperature information corresponding to the minimum value of the brightness reduction rate corresponding to the corresponding display area in each preset time period. Based on each first temperature, determine the second temperature corresponding to the LED display screen, and the second temperature is the temperature corresponding to the slower brightness attenuation rate of the LED display screen. Then obtain the current temperature corresponding to the LED display screen. If the current temperature is greater than the display temperature, output a cooling instruction, where the cooling instruction is used to control a cooling device to cool the LED display screen to the second temperature. When the temperature of the LED display screen rises, adjust the temperature of the LED display screen to reduce the brightness attenuation rate of the LED display screen, thereby reducing the dot-by-dot correction frequency of the LED display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] Figure 1 FIG. is a schematic flowchart of a method for correcting an LED display screen provided by an embodiment of the present application.

[0075] Figure 2 FIG. is a schematic structural diagram of a device for correcting an LED display screen provided by an embodiment of the present application.

[0076] Figure 3 FIG. is a schematic structural diagram of an electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0077] The following further describes the present application in detail Figure 1 - with reference to the Figure 3 drawings.

[0078] This specific embodiment is only an interpretation of the present application and does not limit the present application. Those skilled in the art can make modifications to this embodiment without creative contributions according to needs after reading this specification, but as long as they are within the scope of the claims of the present application, they are protected by the Patent Law.

[0079] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the scope of protection of this application.

[0080] In addition, the term "and / or" in this document is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally represents an "or" relationship between the associated objects before and after, unless otherwise specified.

[0081] The following further describes the embodiments of this application in detail with reference to the accompanying drawings of the specification.

[0082] The embodiments of this application provide a method for calibrating an LED display screen, which is executed by an electronic device. The electronic device can be a server or a terminal device. Among them, the server can be an independent physical server, a server cluster or a distributed system composed of multiple physical servers, or a cloud server providing cloud computing services. The terminal device can be a smart phone, a tablet computer, a notebook computer, a desktop computer, etc., but is not limited thereto. The terminal device and the server can be directly or indirectly connected through wired or wireless communication methods, which are not limited in the embodiments of this application. Among them, as Figure 1 shown, the method may include:

[0083] Step S1, obtain the historical brightness information corresponding to each display area on the LED display screen in each preset time period.

[0084] Among them, the historical brightness information includes: the relationship curve between the brightness of the display area and time. The LED display screen includes at least two display areas, and each display area includes at least two light points.

[0085] For the embodiments of the present application, the brightness of the display area changes continuously over time. The relationship curve between the brightness of the display area and time includes: the curve of the brightness of the display area changing with time. The LED display screen can be a tiled screen or a single display screen. The preset time period can be twenty minutes or two hours. The specific time range is not limited in the embodiments of the present application. For example, the historical brightness information a1 of display area A corresponding to the preset time period T1, the historical brightness information b1 of display area B corresponding to the preset time period T1, the historical brightness information a2 of display area A corresponding to the preset time period T2, and the historical brightness information b2 of display area B corresponding to the preset time period T2.

[0086] For the embodiments of the present application, the historical brightness information corresponding to each display area in the LED display screen at each preset time period can be obtained from local storage, can also be obtained from other devices, or the historical brightness information corresponding to each display area in the LED display screen input by the user at each preset time period can be obtained.

[0087] In the above embodiments of the application, after obtaining the historical brightness information corresponding to each display area in the LED display screen at each preset time period, the display device can display in real time the historical brightness information corresponding to each display area in the LED display screen at each preset time period, or when detecting a display instruction triggered by the user, display the historical brightness information corresponding to each display area in the LED display screen at each preset time period for the user to grasp the historical brightness information of each display area of the LED display screen in real time.

[0088] Step S2: Based on the historical brightness information corresponding to each display area at each preset time period, determine the brightness reduction rate corresponding to each display area at each preset time period.

[0089] For the embodiments of the present application, the historical brightness information corresponding to each display area may be different, and the brightness reduction rate may also be different. Based on the change information of the historical brightness of each display area at each preset time period and the preset time period, determine the brightness reduction rate corresponding to each display area.

[0090] In the above embodiments of the application, after determining the brightness reduction rate corresponding to each display area at each preset time period, the above display device can display in real time the brightness reduction rate corresponding to each display area at each preset time period, or when detecting a display instruction triggered by the user, display the brightness reduction rate corresponding to each display area at each preset time period for the user to grasp the change situation of the brightness rate corresponding to the display area in real time.

[0091] Step S3: Obtain the historical temperature information corresponding to each display area in each preset time period.

[0092] Among them, the historical temperature information corresponding to any display area includes: the average temperature of any display area in the corresponding preset time period.

[0093] For the embodiments of the present application, the historical temperature information corresponding to each display area in each preset time period can be obtained from local storage, can also be obtained from other devices, or can also obtain the historical temperature information corresponding to each display area in each preset time period input by other users.

[0094] Further, after obtaining the historical temperature information corresponding to each display area in each preset time period, the above display device can display the historical temperature information corresponding to each display area in each preset time period in real time, or can display the historical temperature information corresponding to each display area in each preset time period when a display instruction triggered by the user is detected, so that the user can grasp the change of the historical temperature information corresponding to the display area in real time.

[0095] Step S4: Determine the first temperature corresponding to each display area based on the brightness reduction rate and the historical temperature information corresponding to each display area in each preset time period.

[0096] Among them, the historical temperature information corresponding to any display area includes: the average temperature of any display area in the corresponding preset time period, and the first temperature is the historical temperature information corresponding to the minimum value of the brightness reduction rate corresponding to the corresponding display area in each preset time period.

[0097] For the embodiments of the present application, after determining the brightness reduction rate corresponding to each display area in each preset time period, different historical temperature information has different effects on the brightness reduction rate. Each display area corresponds to multiple brightness reduction rates. When the brightness reduction rate is the smallest, the historical temperature information has the smallest effect on the brightness reduction rate.

[0098] In the above embodiments of the application, after determining the first temperature corresponding to each display area, the above display device can display the first temperature of the LED display screen in real time, or can display the first temperature corresponding to each display area when a display instruction triggered by the user is detected, so that the staff can grasp the temperature corresponding to the slower brightness change rate of the display area in real time.

[0099] Step S5: Determine the second temperature corresponding to the LED display screen based on each first temperature.

[0100] For the embodiments of the present application, the second temperature is the temperature at which the attenuation rate of the LED display screen is the slowest. After the LED display screen determines the first temperature corresponding to each display area, it determines the average value of the first temperatures corresponding to each display area or the first temperature corresponding to one of the display areas as the second temperature corresponding to the LED display screen.

[0101] After determining the second temperature corresponding to the LED display screen in the above application embodiment, the above display device can display the second temperature corresponding to the LED display screen in real time, or can display the second temperature corresponding to the LED display screen when detecting a display instruction triggered by the user, so that the user can know the temperature corresponding to the slower brightness reduction rate of the LED display screen.

[0102] Step S6: Obtain the current temperature corresponding to the LED display screen.

[0103] For the embodiments of the present application, the current temperature corresponding to the LED display screen can be the average temperature of the current temperatures of each display area. The temperature acquisition device can obtain the current temperature corresponding to the LED display screen in real time, or can collect the current temperature corresponding to the LED display screen at each specific time, or can also obtain the current temperature corresponding to the LED display screen when detecting a trigger instruction from the user, which is not limited in the embodiments of the present application.

[0104] For the embodiments of the present application, in order to further analyze whether the current temperature corresponding to the LED display screen will affect the brightness attenuation rate, the electronic device can obtain the current temperature corresponding to the LED display screen from the acquisition device in real time, or can obtain the current temperature corresponding to the LED display screen from the acquisition device at specific intervals, or can also obtain the current temperature corresponding to the LED display screen from the acquisition device when detecting a trigger instruction from the user, which is not limited in the embodiments of the present application.

[0105] Among them, the temperature acquisition device can be a device independent of the electronic device, or can be an acquisition module belonging to the electronic device.

[0106] In the above application embodiment, after obtaining the current temperature corresponding to the LED display screen, the above display device can display the current temperature of the LED display screen in real time, or can also display the current temperature corresponding to each display area when detecting a display instruction triggered by the user, so that the staff can know the current temperature situation of the display area in real time.

[0107] Step S7: If the current temperature is greater than the second temperature, output a cooling instruction.

[0108] Among them, the cooling instruction is used to control the cooling device to cool the LED display screen to the second temperature.

[0109] For the embodiments of this application, if the current temperature of the LED display screen is too high, it will affect the brightness attenuation rate of the LED display screen. After determining the second temperature, obtain the current temperature corresponding to the LED display screen, compare the magnitudes of the current temperature and the second temperature. When the current temperature is greater than the second temperature, output a cooling instruction to cause the cooling device to cool the LED display screen.

[0110] Among them, the cooling device can be a cold air blower, a negative pressure machine, or a semiconductor refrigeration chip.

[0111] In the above-mentioned application embodiments, when it is detected that the current temperature is greater than the display temperature, after outputting the cooling instruction, the above-mentioned display device can display the cooling situation of the LED display screen in real time, or when it is detected that the user triggers the display instruction, display the cooling situation of the LED display screen, so that the user can grasp the cooling situation of the LED display screen in real time.

[0112] The embodiments of this application provide a method for correcting an LED display screen. Compared with the related art, in the embodiments of this application, by obtaining the historical brightness information corresponding to each display area in the LED display screen at each preset time period, where the historical brightness information includes: the relationship curve between the brightness of the display area and time, and the LED display screen includes at least two display areas. Based on the historical brightness information corresponding to each display area at each preset time period, determine the brightness reduction rate corresponding to each display area at each preset time period. After determining the brightness reduction rate, obtain the historical temperature information corresponding to the display area at each preset time period, where the historical temperature information corresponding to any display area includes: the average temperature of any display area in the corresponding preset time period, and based on the brightness reduction rate and the historical temperature information corresponding to each display area at each preset time period, determine the first temperature corresponding to each display area. The first temperature is the historical temperature information corresponding to the minimum value of the brightness reduction rate corresponding to the corresponding display area at each preset time period. Based on each first temperature, determine the second temperature corresponding to the LED display screen. The second temperature is the temperature corresponding to the slower brightness attenuation rate of the LED display screen. Then obtain the current temperature corresponding to the LED display screen. If the current temperature is greater than the display temperature, output a cooling instruction, where the cooling instruction is used to control the cooling device to cool the LED display screen to the second temperature. When the temperature of the LED display screen rises, adjust the temperature of the LED display screen to reduce the brightness attenuation rate of the LED display screen, thereby reducing the per-point correction frequency of the LED display screen.

[0113] Another possible implementation of the embodiment of the present application. In step S2, based on the historical brightness information corresponding to each display area in each preset time period, determining the brightness reduction rate corresponding to each display area in each preset time period may specifically include: step S201 (not shown in the figure) and step S202 (not shown in the figure). Among them, in step S201, based on the relationship curve between the brightness and time of the display area, determining the brightness change value and time change value corresponding to each display area in each preset time period.

[0114] For the embodiment of the present application, based on the relationship curve between the brightness and time of the display area, calculating the brightness change value and time change value of each display area. The brightness change information may be the difference between the highest brightness and the lowest brightness within a preset time period.

[0115] Another possible implementation of the embodiment of the present application. The relationship curve between the brightness and time of the display area includes: the relationship curve between the red brightness and time of the display area, the relationship curve between the green brightness and time of the display area, and the relationship curve between the blue brightness and time of the display area;

[0116] In step S201, based on the relationship curve between the luminance of the display area and time, the luminance change value corresponding to each display area in each preset time period is determined. Specifically, it may include: based on the relationship curve between the red luminance of each display area and time in each preset time period, determining the red luminance change value corresponding to each display area in each preset time period; based on the relationship curve between the green luminance of each display area and time in each preset time period, determining the green luminance change value corresponding to each display area in each preset time period; based on the relationship curve between the blue luminance of each display area and time in each preset time period, determining the blue luminance change value corresponding to each display area in each preset time period; based on the preset change weight and the red luminance change value, green luminance change value, and blue luminance change value corresponding to each display area in each preset time period, determining the luminance change value corresponding to each display area in each preset time period. In the embodiment of the present application, the step of determining the red luminance change value corresponding to each display area in each preset time period based on the relationship curve between the red luminance of each display area and time in each preset time period may be executed before the step of determining the green luminance change value corresponding to each display area in each preset time period based on the relationship curve between the green luminance of each display area and time in each preset time period, or may be executed after the step of determining the green luminance change value corresponding to each display area in each preset time period based on the relationship curve between the green luminance of each display area and time in each preset time period, or may also be executed simultaneously with the step of determining the green luminance change value corresponding to each display area in each preset time period based on the relationship curve between the green luminance of each display area and time in each preset time period, and is not limited in the embodiment of the present application.

[0117] For the embodiment of the present application, the LED display screen includes three primary colors: red, green, and blue. Since the attenuation rates corresponding to the luminances of red, green, and blue are different, the LED display screen has uneven luminance. Among them, the attenuation rate of the red light luminance is the largest when the temperature rises.

[0118] For the embodiments of the present application, since the attenuation rates corresponding to the brightnesses of red, green, and blue in each display area are different, the light point reduction rate is calculated based on the red reduction rate, the green reduction rate, the blue reduction rate, and their respective corresponding weights. By the red brightness-time relationship curve of the display area, the red brightness change value of each display area in each preset time period is determined; by the green brightness-time relationship curve of the display area, the green brightness change value of each display area in each preset time period is determined; by the blue brightness-time relationship curve of the display area, the blue brightness change value of each display area in each preset time period is determined, and the blue brightness change value of each display area in each preset time period is calculated based on the blue brightness change value. For example, in the preset time period T1 from 8:00 to 9:00 in display area A, the red brightness corresponding to display area A drops from 500 mcd to 420 mcd, then the red brightness change in the preset time period T1 of display area A is 80 mcd.

[0119] Furthermore, since the attenuation rates corresponding to the three primary colors are different, the brightness change values corresponding to each display area in each preset time period are calculated through the red brightness change value, the green brightness change value, the blue brightness change value, and their respective corresponding preset change weights. The preset change weights include: the preset change weight of the red brightness change value, the preset change weight of the green brightness change value, and the preset change weight of the blue brightness change value. The preset change weights can be preset by engineers or preset by the system. For example, the brightness change value is determined based on F = α * P1 + β * P2 + γ * P3, where α is used to represent the red brightness change value, β is used to represent the green brightness change value, γ is used to represent the blue brightness change value, P1 is used to represent the preset change weight corresponding to the red brightness change value, P2 is used to represent the preset change weight corresponding to the green brightness change value, P3 is used to represent the preset change weight corresponding to the blue brightness change value, and F is used to represent the preset change weight. By the brightness change values of the three primary colors and the preset change weights, the brightness change values corresponding to each display area in each preset time period are accurately determined, and the influence of temperature on brightness is determined more precisely.

[0120] Step S202: Based on the brightness change values and time change values corresponding to each display area in each preset time period, determine the brightness reduction rate corresponding to each display area in each preset time period.

[0121] For the embodiments of the present application, after determining the brightness change value and the time change value corresponding to each display area in each preset time period respectively, calculate the ratio of the brightness change value corresponding to each display area in each preset time period to the time change value corresponding to each display area in each preset time period, and determine this ratio as the brightness reduction rate corresponding to each display area in each preset time period. For example, if the brightness change value corresponding to display area A in preset time period T1 is 120 mcd and the time change value is 5 hours, then the brightness reduction rate corresponding to display area A in preset time period T1 is 24 mcd / h. By the relationship curve between the brightness and time of the display area, determine the brightness change value and the time change value of the display area in each preset time period, and determine the brightness reduction rate of the display area in each preset time period through the brightness change value and the time change value, so as to accurately determine the brightness reduction rate of the display area in each preset time period.

[0122] Another possible implementation manner of the embodiments of the present application. In step S4, based on the brightness reduction rate corresponding to each display area in each preset time period and the historical temperature information, determine the first temperature corresponding to each display area. Specifically, it may include: based on the brightness reduction rate corresponding to each display area in each preset time period, determine the minimum brightness reduction rate corresponding to each display area; based on the minimum brightness reduction rate, the preset time period, and the average temperature corresponding to each display area in each preset time period, determine the first temperature corresponding to each display area. In the embodiments of the present application, the brightness reduction rates corresponding to each display area in each preset time period may be different. Compare the brightness reduction rates corresponding to each display area in each preset time period to determine the minimum brightness reduction rate. Then, the historical temperature information (i.e., the average temperature) corresponding to the preset time period corresponding to the minimum reduction rate is the first temperature corresponding to each display area. By using the historical temperature information corresponding to the minimum reduction rate of the display area to determine the first temperature corresponding to each display area, the effect of reducing the brightness attenuation rate of this display area is better. For example, if the average temperature corresponding to display area A in preset time period T1 is 31° and the brightness reduction rate is 75 mcd / h, the average temperature corresponding to display area A in preset time period T2 is 25° and the brightness reduction rate is 50 mcd / h, and the average temperature corresponding to display area A in preset time period T3 is 39° and the brightness reduction rate is 120 mcd / h, then the minimum brightness reduction rate corresponding to display area A is 50 mcd / h, the preset time period corresponding to this minimum brightness reduction rate is preset time period T2, and the average temperature corresponding to preset time period T2 is 25°, then the first temperature corresponding to display area A is 25°.

[0123] Specifically, determining the second temperature corresponding to the LED display screen based on each first temperature may specifically include any one of step S501 (not shown in the figure) and step S502 (not shown in the figure), where

[0124] Step S501: Calculate the average value of each first temperature and determine the average value as the display temperature of the LED display screen.

[0125] For the embodiments of the present application, after determining the first temperature corresponding to each display area, calculate the average value of the first temperature corresponding to each display area, and determine the average value as the second temperature of the LED display screen. The average value of the first temperature corresponding to each display area is the temperature average trend of each display area, and the determined first temperature is more accurate. For example, the LED display screen includes display area A, display area B, and display area C. The first temperature of display area A is 30°, the area temperature of display area B is 25°, and the first temperature of display area C is 26°. Then the second temperature corresponding to the LED display screen is 27°.

[0126] Step S502: Determine the minimum first temperature based on each first temperature and determine the minimum first temperature as the corresponding display temperature of the LED display screen.

[0127] For the embodiments of the present application, the first temperature is the first temperature corresponding to the minimum reduction rate of the brightness of the display area. The higher the temperature, the faster the brightness attenuation rate of the display screen. Determine the minimum first temperature as the display temperature, which further reduces the brightness attenuation rate of the LED display screen, and further reduces the frequency of point-by-point correction of the LED display screen. For example, the LED display screen includes display area D, display area E, and display area F. The area temperature of display area D is 30°, the area temperature of display area E is 27°, and the area temperature of display area F is 26°. Then the display temperature of the LED display screen is the minimum value among all area temperatures, that is, 26°. By determining the minimum area temperature based on the area temperature, the brightness attenuation rate of the LED display screen is reduced to a greater extent.

[0128] Another possible implementation manner of the embodiments of the present application is that the method may further include: obtaining the current brightness corresponding to each display area respectively; determining the number of display areas where the current brightness is less than the preset brightness based on the current brightness; if the number of display areas is greater than the preset number, determining the LED display screen as a faulty display screen. In the embodiments of the present application, the electronic device may obtain the current brightness corresponding to each display area respectively in real time, or obtain the current brightness corresponding to each display area respectively at intervals of a preset time, or obtain the current brightness corresponding to each display area respectively when detecting a user-triggered acquisition instruction.

[0129] The step of obtaining the current brightness corresponding to each display area may be executed before step S1, may be executed after step S1, or may be executed simultaneously with step S1.

[0130] For the embodiments of the present application, when the current brightness of most display areas in the LED display screen is relatively low, it is inaccurate to determine the second temperature of the LED display screen, and the display effect of the LED display screen is relatively poor. This LED display screen is a faulty display screen. To save costs, it is not necessary to adjust the temperature of this LED display screen. Among them, the preset brightness and the preset number can be pre-set by an engineer or the system, or can be determined by user selection. The specific preset number is not limited in the embodiments of the present application. For example, the LED display screen includes 10 display areas, the preset brightness is 120 mcd, and the preset number is 6. When the current brightness of 8 display areas of the LED display screen is less than the preset brightness, this LED display screen is a faulty display screen. By determining the faulty display screen in advance, the staff can repair the faulty area, avoiding wasting resources to adjust the temperature of the faulty LED display screen.

[0131] Another possible implementation manner of the embodiments of the present application, the method may further include: obtaining the current working duration of the LED display screen; determining the current temperature difference based on the current temperature and the display temperature; determining the shutdown duration of the LED display screen based on the current working duration, the current temperature difference, and the preset shutdown weight. In the embodiments of the present application, the step of obtaining the current working duration of the LED display screen may be executed before the step of obtaining the historical brightness information corresponding to each display area in the LED display screen at each preset time period, may be executed after the step of obtaining the historical brightness information corresponding to each display area in the LED display screen at each preset time period, or may be executed simultaneously with the step of obtaining the historical brightness information corresponding to each display area in the LED display screen at each preset time period.

[0132] For the embodiments of the present application, the current working duration of the LED display screen is the time from the start of operation of the LED display screen until the current moment, and there is no interruption during this process. The long-term operation of the LED display screen will cause the LED display screen to accelerate brightness attenuation. In order to reduce the calibration frequency of the LED display screen, the current temperature difference is calculated through the current temperature and the display temperature. Based on the current working duration, the current temperature difference, and their respective preset weights, the working time of the LED display screen is determined. Among them, the preset weights can be set in advance by engineers or the system. For example, the display temperature is 30°, the current working time of the LED display screen is 7 hours, the current temperature is 35°, the preset weight of the current working time is 0.6, and the preset weight of the current temperature difference is 0.4. Then the shutdown duration is 6.2 hours. By determining the shutdown time of the LED display screen, it is possible to avoid the accelerated attenuation rate of the LED display screen caused by long-term operation, and further reduce the calibration frequency of the LED display screen.

[0133] Another possible implementation manner of the embodiments of the present application is that the method may further include: obtaining the current voice information; determining keywords based on the voice information and the display file; and outputting a control instruction based on the keywords. Among them, the control instruction is used to control the LED display screen to display the keyword content. In the embodiments of the present application, the step of obtaining the current voice information may be executed before the step of obtaining the historical brightness information corresponding to each display area of the LED display screen in each preset time period, may also be executed after the step of obtaining the historical brightness information corresponding to each display area of the LED display screen in each preset time period, or may be executed simultaneously with the step of obtaining the historical brightness information corresponding to each display area of the LED display screen in each preset time period.

[0134] For the embodiments of the present application, a text content file is displayed using the LED display screen, and there are multiple pieces of text content in the text content file. When the LED display screen receives a switching instruction triggered by the user, the text content displayed on the LED display screen is switched. The electronic device can obtain the current voice information in real time. After obtaining the current voice information, the current voice information is converted into current text information, keyword extraction is performed through the determined text information, and the keywords are compared with the text content file to determine the text content to be switched, and a control instruction is output to control the LED display screen to switch, improving the display control of the LED display screen.

[0135] The above embodiments introduce a method for calibrating an LED display screen from the perspective of the method flow. The following embodiments introduce a device for calibrating an LED display screen from the perspective of virtual modules or virtual units. For details, see the following embodiments.

[0136] The embodiments of the present application provide a device for calibrating an LED display screen, such as Figure 2As shown in the figure, the device 20 for calibrating an LED display screen may specifically include: a first acquisition module 21, a first determination module 22, a second acquisition module 23, a second determination module 24, a third determination module 25, a third acquisition module 26, and an output module 27. Among them,

[0137] The first acquisition module 21 is configured to acquire the historical brightness information corresponding to each display area in the LED display screen in each preset time period. The historical brightness information includes: the relationship curve between the brightness of the display area and time. The LED display screen includes at least two display areas;

[0138] The first determination module 22 is configured to determine the brightness reduction rate corresponding to each display area in each preset time period based on the historical brightness information corresponding to each display area in each preset time period;

[0139] The second acquisition module 23 is configured to acquire the historical temperature information corresponding to each display area in each preset time period. The historical temperature information corresponding to any display area includes: the average temperature of any display area in the corresponding preset time period. The second determination module 24 is configured to determine the first temperature corresponding to each display area based on the brightness reduction rate and the historical temperature information corresponding to each display area in each preset time period. The first temperature is the historical temperature information corresponding to the minimum value of the brightness reduction rate corresponding to the corresponding display area in each preset time period;

[0140] The third determination module 25 is configured to determine the second temperature corresponding to the LED display screen based on each first temperature;

[0141] The third acquisition module 26 is configured to acquire the current temperature corresponding to the LED display screen;

[0142] The output module 27 is configured to output a cooling instruction when the current temperature is greater than the second temperature. The cooling instruction is used to control a cooling device to cool the LED display screen to the current temperature.

[0143] In a possible implementation manner of the embodiment of the present application, when the first determination module 22 determines the brightness reduction rate corresponding to each display area in each preset time period based on the historical brightness information corresponding to each display area in each preset time period, it is specifically configured to:

[0144] Based on the relationship curve between the brightness and time corresponding to each display area in each preset time period, determine the brightness change value and the time change value corresponding to each display area in each preset time period;

[0145] Based on the brightness change values and time change values respectively corresponding to each display area in each preset time period, determine the brightness reduction rate respectively corresponding to each display area in each preset time period.

[0146] Another possible implementation manner of the embodiment of the present application, the relationship curve between the brightness and time of the display area includes: the relationship curve between the red brightness and time of the display area, the relationship curve between the green brightness and time of the display area, and the relationship curve between the blue brightness and time of the display area;

[0147] When the first determination module 22 determines the brightness change values respectively corresponding to each display area in each preset time period based on the relationship curve between the brightness and time of the display area, it specifically is used for:

[0148] Based on the relationship curve between the red brightness and time respectively corresponding to each display area in each preset time period, determine the red brightness change values respectively corresponding to each display area in each preset time period;

[0149] Based on the relationship curve between the green brightness and time respectively corresponding to each display area in each preset time period, determine the green brightness change values respectively corresponding to each display area in each preset time period;

[0150] Based on the relationship curve between the blue brightness and time respectively corresponding to each display area in each preset time period, determine the blue brightness change values respectively corresponding to each display area in each preset time period;

[0151] Based on the preset change weight and the red change values, green change values, and blue change values respectively corresponding to each display area in each preset time period, determine the brightness change values respectively corresponding to each display area in each preset time period.

[0152] Another possible implementation manner of the embodiment of the present application, when the second determination module 24 determines the first temperature corresponding to each display area based on the brightness reduction rate respectively corresponding to each display area in each preset time period and the historical temperature information, it specifically is used for:

[0153] Based on the brightness reduction rate respectively corresponding to each display area in each preset time period, determine the minimum brightness reduction rate corresponding to each display area;

[0154] Based on the minimum brightness reduction rate, the preset time period, and the average temperature respectively corresponding to each display area in each preset time period, determine the first temperature corresponding to each display area.

[0155] Another possible implementation manner of the embodiment of the present application, when the third determination module 25 determines the second temperature corresponding to the LED display screen based on the respective first temperatures, it specifically is used for:

[0156] Calculate the average temperature of the temperatures in each area, and determine the average temperature as the display temperature of the LED display screen; or, determine the minimum area temperature based on the temperatures in each area, and determine the minimum area temperature as the corresponding display temperature of the LED display screen.

[0157] Another possible implementation manner of the embodiment of the present application is that the apparatus 20 further includes: a fourth acquisition module, a fourth determination module, and a fifth determination module, where

[0158] The fourth acquisition module is configured to acquire the current brightness corresponding to each display area;

[0159] The fourth determination module is configured to determine the number of display areas where the current brightness is less than a preset brightness based on the current brightness;

[0160] The fifth determination module is configured to determine the LED display screen as a faulty display screen when the number of display areas is greater than a preset number.

[0161] Another possible implementation manner of the embodiment of the present application is that the apparatus 20 further includes: a fifth acquisition module, a sixth determination module, and a seventh determination module, where

[0162] The fifth acquisition module is configured to acquire the current working duration of the LED display screen;

[0163] The sixth determination module is configured to determine the current temperature difference based on the current temperature and the display temperature;

[0164] The seventh determination module is configured to determine the shutdown duration of the LED display screen based on the current working duration, the current temperature difference, and a preset shutdown weight.

[0165] An embodiment of the present application provides a device for correcting an LED display screen. Compared with the related art, in the embodiment of the present application, by obtaining the historical brightness information corresponding to each display area in the LED display screen in each preset time period, where the historical brightness information includes: the relationship curve between the brightness of the display area and time, and the LED display screen includes at least two display areas, based on the historical brightness information corresponding to each display area in each preset time period, determine the brightness reduction rate corresponding to each display area in each preset time period. After determining the brightness reduction rate, obtain the historical temperature information corresponding to the display area in each preset time period, where the historical temperature information corresponding to any display area includes: the average temperature of any display area in the corresponding preset time period, and based on the brightness reduction rate and historical temperature information corresponding to each display area in each preset time period, determine the first temperature corresponding to each display area, and the first temperature is the historical temperature information corresponding to the minimum value of the brightness reduction rate corresponding to the corresponding display area in each preset time period. Based on each first temperature, determine the second temperature corresponding to the LED display screen, and the second temperature is the temperature corresponding to the slower brightness attenuation rate of the LED display screen. Then obtain the current temperature corresponding to the LED display screen. If the current temperature is greater than the display temperature, output a cooling instruction, where the cooling instruction is used to control a cooling device to cool the LED display screen to the second temperature. When the temperature of the LED display screen rises, adjust the temperature of the LED display screen to reduce the brightness attenuation rate of the LED display screen, thereby reducing the per-point correction frequency of the LED display screen.

[0166] Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process of the above-described device for per-point correction of an LED display screen can refer to the corresponding process in the foregoing method embodiment, and will not be elaborated herein.

[0167] An embodiment of the present application provides an electronic device, such as Figure 3 shown Figure 3 The electronic device 30 shown includes: a processor 301 and a memory 303. Among them, the processor 301 and the memory 303 are connected, such as through a bus 302. Optionally, the electronic device 30 may further include a transceiver 304. It should be noted that in actual applications, the transceiver 304 is not limited to one, and the structure of the electronic device 30 does not constitute a limitation to the embodiment of the present application.

[0168] The processor 301 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules, and circuits described in connection with the disclosure of this application. The processor 301 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0169] The bus 302 may include a path for transmitting information between the above components. The bus 302 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. The bus 302 may be divided into an address bus, a data bus, a control bus, etc. For the sake of representation, Figure 3 only a thick line is used to represent it in the figure, but it does not mean that there is only one bus or one type of bus.

[0170] The memory 303 may be a ROM (Read Only Memory) or other types of static storage devices that can store static information and instructions, a RAM (Random Access Memory) or other types of dynamic storage devices that can store information and instructions, or it may also be an EEPROM (Electrically Erasable Programmable Read Only Memory), a CD-ROM (Compact Disc Read Only Memory), or other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic storage media, or other magnetic storage devices, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0171] The memory 303 is used to store the application program code for executing the solution of this application, and is controlled by the processor 301 for execution. The processor 301 is used to execute the application program code stored in the memory 303 to implement the content shown in the foregoing method embodiments.

[0172] Among them, the electronic device includes but is not limited to: mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Tablet Computers), PMPs (Portable Multimedia Players), in-vehicle terminals (such as in-vehicle navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. It can also be a server, etc. Figure 3 The electronic device shown is only an example and should not impose any limitations on the functions and usage scope of the embodiments of this application.

[0173] The embodiments of this application provide a computer-readable storage medium, on which a computer program is stored. When it runs on a computer, it enables the computer to execute the corresponding content in the foregoing method embodiments. Compared with the related art, in the embodiments of this application, by obtaining the historical temperature information corresponding to each display area in the LED display screen in each preset time period, and the historical brightness information corresponding to each light point in each display area in each preset time period, where the LED display screen includes at least two display areas, each display area includes at least two light points, the historical temperature information includes: the average temperature corresponding to each light point, the historical brightness information includes: the starting brightness and the final brightness, and based on the preset time period and the historical brightness information, determine the brightness reduction rate corresponding to each light point, and based on the brightness reduction rate and the historical temperature information, determine the area temperature corresponding to each area, the area temperature is the temperature corresponding to the slow brightness attenuation rate of the display area, and then determine the display temperature of the LED display screen based on the area temperature, the display temperature is the temperature corresponding to the slow brightness attenuation rate of the LED display screen, obtain the current temperature corresponding to the LED display screen, if it is detected that the current temperature is greater than the display temperature, then output a cooling instruction, where the cooling instruction is used to control the cooling device to cool the LED display screen to the display temperature, when the temperature of the LED display screen rises, adjust the temperature of the LED display screen to reduce the rate of brightness attenuation of the LED display screen, thereby reducing the dot-by-dot correction frequency of the LED display screen.

[0174] It should be understood that although the steps in the flowchart of the accompanying drawings are shown sequentially as indicated by the arrows, these steps are not necessarily executed sequentially in the order indicated by the arrows. Unless there is a clear indication in this document, there is no strict order restriction for the execution of these steps, and they can be executed in other orders. Moreover, at least a part of the steps in the flowchart of the accompanying drawings may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed alternately or in turn with at least a part of other steps or sub-steps or stages of other steps.

[0175] The above are only some embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A method for calibrating an LED display screen, characterized in that, Including: Obtaining historical brightness information corresponding to each display area in the LED display screen in each preset time period, where the historical brightness information includes: a relationship curve between the brightness of the display area and time, and the LED display screen includes at least two display areas; Based on the historical brightness information corresponding to each display area in each preset time period, determining the brightness reduction rate corresponding to each display area in each preset time period; Obtaining historical temperature information corresponding to each display area in each preset time period, where the historical temperature information corresponding to any display area in each preset time period includes: the average temperature of any display area in the corresponding preset time period; Based on the brightness reduction rate and historical temperature information corresponding to each display area in each preset time period, determining the first temperature corresponding to each display area, where the first temperature is the historical temperature information corresponding to the minimum value of the brightness reduction rate corresponding to the corresponding display area in each preset time period; Based on each of the first temperatures, determining the second temperature corresponding to the LED display screen; Obtaining the current temperature corresponding to the LED display screen; If the current temperature is greater than the second temperature, outputting a cooling instruction, where the cooling instruction is used to control a cooling device to cool the LED display screen to the second temperature.

2. The method according to claim 1, characterized in that, The determining the brightness reduction rate corresponding to each display area in each preset time period based on the historical brightness information corresponding to each display area in each preset time period includes: Based on the relationship curve between the brightness and time corresponding to each display area in each preset time period, determining the brightness change value and time change value corresponding to each display area in each preset time period; Based on the brightness change value and the time change value corresponding to each display area in each preset time period, determining the brightness reduction rate corresponding to each display area in each preset time period.

3. The method according to claim 2, characterized in that, The relationship curve between the brightness of the display area and time includes: a relationship curve between the red brightness of the display area and time, a relationship curve between the green brightness of the display area and time, and a relationship curve between the blue brightness of the display area and time; The determining the brightness change value corresponding to each display area in each preset time period based on the relationship curve between the brightness and time corresponding to each display area in each preset time period includes: Based on the relationship curve between the red brightness and time corresponding to each display area in each preset time period, determining the red brightness change value corresponding to each display area in each of the preset time periods; Based on the relationship curve between the green brightness and time corresponding to each display area in each preset time period, determining the green brightness change value corresponding to each display area in each of the preset time periods; Based on the relationship curve between the blue brightness and time corresponding to each display area in each preset time period, determining the blue brightness change value corresponding to each display area in each of the preset time periods; Determine the brightness change value corresponding to each display area in each of the preset time periods based on the preset change weight and the red change value, green change value, and blue change value corresponding to each display area in each of the preset time periods.

4. The method according to claim 1, characterized in that, The determining of the first temperature corresponding to each display area based on the brightness reduction rate and historical temperature information corresponding to each display area in each of the preset time periods includes: Determine the minimum brightness reduction rate corresponding to each display area based on the brightness reduction rate corresponding to each display area in each of the preset time periods. Determine the first temperature corresponding to each display area based on the minimum brightness reduction rate, the preset time period, and the average temperature corresponding to each display area in each of the preset time periods.

5. The method according to claim 1, characterized in that, The determining of the second temperature corresponding to the LED display based on the respective first temperatures includes any one of the following: Calculate the average value of the respective first temperatures and determine the average temperature as the second temperature of the LED display. Determine the minimum first temperature based on the respective first temperatures and determine the minimum first temperature as the second temperature corresponding to the LED display.

6. The method according to claim 1, characterized in that, The method further includes: Obtain the current brightness corresponding to each of the display areas. Determine the number of display areas where the current brightness is less than the preset brightness based on the current brightness. If the number of display areas is greater than the preset number, determine the LED display as a faulty display.

7. The method according to claim 1, characterized in that, The method further includes: Obtain the current working duration of the LED display. Determine the current temperature difference based on the current temperature and the second temperature. Determine the shutdown duration of the LED display based on the current working duration, the current temperature difference, and the preset shutdown weight.

8. An apparatus for calibrating an LED display screen, characterized in that, Includes: A first acquisition module, configured to acquire historical brightness information corresponding to each display area in the LED display in each of the preset time periods, where the historical brightness information includes: a relationship curve between the brightness of the display area and time, and the LED display includes at least two display areas. A first determination module, configured to determine the brightness reduction rate corresponding to each display area in each of the preset time periods based on the historical brightness information corresponding to each display area in each of the preset time periods. A second acquisition module, configured to acquire historical temperature information corresponding to each display area in each of the preset time periods, where the historical temperature information corresponding to any display area in each of the preset time periods includes: the average temperature of any display area in the corresponding preset time period. A second determination module, configured to determine the first temperature corresponding to each display area based on the brightness reduction rate and historical temperature information corresponding to each display area in each of the preset time periods, where the first temperature is the historical temperature information corresponding to the minimum value of the brightness reduction rate corresponding to the corresponding display area in each of the preset time periods. A third determination module, configured to determine the second temperature corresponding to the LED display based on the respective first temperatures. A third acquisition module, configured to acquire the current temperature corresponding to the LED display. An output module, configured to output a cooling instruction if the current temperature is greater than the second temperature, where the cooling instruction is used to control a cooling device to cool the LED display screen to the second temperature.

9. An electronic device, characterized in that, Comprising: One or more processors; A memory; One or more applications, where the one or more applications are stored in the memory and configured to be executed by the one or more processors, and the one or more applications are configured to: execute a method for correcting an LED display screen according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by a processor, it implements a method for correcting an LED display screen according to any one of claims 1 to 7.

Images