CN117409738A - LED liquid crystal display assembly control method and system - Google Patents
LED liquid crystal display assembly control method and system Download PDFInfo
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 30
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- 238000005457 optimization Methods 0.000 claims abstract description 24
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- 238000010168 coupling process Methods 0.000 claims description 31
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- 238000012549 training Methods 0.000 claims description 8
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
- G09G2360/144—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light being ambient light
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The application provides a control method and a system for an LED liquid crystal display assembly, which relate to the technical field of intelligent control, and the method comprises the following steps: obtaining inertial display brightness; calculating display brightness deviation; when the display brightness deviation is smaller than or equal to the first brightness deviation threshold value, adding the inertia display brightness into brightness adjustment requirement information; when the display brightness deviation is larger than the first brightness deviation threshold value, standard display brightness is added into brightness adjustment requirement information; generating a main LED array limit control state; detecting whether a brightness control defect area exists in the limit control state of the main LED array; if the auxiliary LED array control state exists, generating an auxiliary LED array control state and a main LED array control state; the technical problems of poor light supplementing effect and insufficient brightness control accuracy of the brightness liquid crystal display caused by lack of analysis optimization of main mini LEDs are solved, and the technical effect of improving the accuracy of brightness compensation control is achieved by brightness control compensation optimization.
Description
Technical Field
The application relates to the technical field of intelligent control, in particular to a control method and a control system for an LED liquid crystal display assembly.
Background
The LED liquid crystal display assembly is a liquid crystal display array composed of LEDs and the like, and is widely used for displaying brand advertisements, promoting information, making stage backgrounds and visual effects, making traffic signs and information cards, making public information cards and guiding signs and the like because the LED liquid crystal display array has the advantages of high brightness, high definition, low power consumption, long service life, environmental protection and the like.
In the prior art, an auxiliary mini LED and a photodiode are deployed in the center of each unit array of main mini LEDs distributed in an array, and when the photodiode monitors that the brightness of the unit array does not meet the requirements, the auxiliary mini LED is activated to supplement light, so that the display brightness is ensured, and the service life of a product is prolonged. However, in the conventional LED display brightness control method, light is supplemented by using an auxiliary mini LED after brightness monitoring, so that analysis and optimization of a main mini LED are lacking, and when the limit brightness of the auxiliary mini LED cannot meet the light supplementing requirement, the light supplementing effect is poor, so that the brightness control accuracy of the brightness liquid crystal display is insufficient.
Disclosure of Invention
The application provides a control method and a control system for an LED liquid crystal display assembly, which are used for solving the technical problems that in the prior art, due to the lack of analysis optimization for a main mini LED, when the limit brightness of an auxiliary mini LED cannot meet the light supplementing requirement, the light supplementing effect is poor, and the brightness control accuracy of the brightness liquid crystal display is insufficient.
According to a first aspect of the present application, there is provided a method for controlling an LED liquid crystal display assembly, including: acquiring first ambient brightness based on a photoreceptor to perform operation inertia analysis to obtain inertia display brightness; performing standard brightness analysis based on the first ambient brightness to obtain standard display brightness, and calculating display brightness deviation of the inertial display brightness and the standard display brightness; when the display brightness deviation is smaller than or equal to a first brightness deviation threshold value, adding the inertial display brightness into brightness adjustment requirement information; when the display brightness deviation is larger than the first brightness deviation threshold value, adding the standard display brightness into brightness adjustment requirement information; performing brightness control limit optimization on the main LED array based on the brightness adjustment demand information to generate a main LED array limit control state; detecting whether a brightness control defect area exists in the limit control state of the main LED array through a brightness sensor; if the LED array exists, introducing an auxiliary LED array to perform brightness control compensation optimizing, and generating an auxiliary LED array control state and a main LED array control state; and controlling the brightness of the liquid crystal display according to the auxiliary LED array control state and the main LED array control state.
According to a second aspect of the present application, there is provided an LED liquid crystal display assembly control system, comprising: the operation inertia analysis module is used for carrying out operation inertia analysis based on the first environment brightness acquired by the photoreceptor to obtain inertia display brightness; the standard brightness analysis module is used for carrying out standard brightness analysis based on the first environment brightness to obtain standard display brightness, and calculating display brightness deviation of the inertial display brightness and the standard display brightness; the first brightness deviation analysis module is used for adding the inertial display brightness into brightness adjustment requirement information when the display brightness deviation is smaller than or equal to a first brightness deviation threshold value; the second brightness deviation analysis module is used for adding the standard display brightness into brightness adjustment requirement information when the display brightness deviation is larger than the first brightness deviation threshold value; the brightness control limit optimizing module is used for carrying out brightness control limit optimizing on the main LED array based on the brightness adjustment demand information to generate a main LED array limit control state; the defect area detection module is used for detecting whether a brightness control defect area exists in the limit control state of the main LED array through a brightness sensor; the brightness control compensation optimizing module is used for introducing an auxiliary LED array to perform brightness control compensation optimizing if the brightness control compensation optimizing module exists, and generating an auxiliary LED array control state and a main LED array control state; and the brightness control module is used for controlling the brightness of the liquid crystal display according to the control state of the auxiliary LED array and the control state of the main LED array.
According to one or more technical schemes adopted by the application, the beneficial effects which can be achieved are as follows:
1. by performing deviation analysis on the inertial display brightness and the standard display brightness, brightness adjustment requirement information is obtained according to display brightness deviation, brightness requirement is met, and meanwhile, the adaptation degree of brightness compensation control and user operation habit is improved, so that the brightness control effect of the liquid crystal display is improved.
2. And carrying out brightness control limit optimizing on the main LED array based on brightness adjustment demand information to generate a main LED array limit control state, detecting whether a brightness control defect area exists in the main LED array limit control state through a brightness sensor, if so, introducing an auxiliary LED array to carry out brightness control compensation optimizing to generate an auxiliary LED array control state and a main LED array control state, and carrying out liquid crystal display brightness control according to the auxiliary LED array control state and the main LED array control state, thereby achieving the technical effect of ensuring the operation safety of the main LED array while ensuring the control precision through line brightness control limit optimizing.
3. Detecting whether a brightness control defect area exists in a main LED array limit control state or not through a brightness sensor, if so, introducing an auxiliary LED array to perform brightness control compensation optimization, generating an auxiliary LED array control state and a main LED array control state, performing liquid crystal display brightness control according to the auxiliary LED array control state and the main LED array control state, realizing brightness compensation on the brightness control defect area, reducing the input current while improving brightness compensation accuracy through brightness control compensation optimization, ensuring LED operation safety through brightness control compensation optimization, and reducing the input current while improving brightness compensation accuracy and ensuring LED operation safety.
Drawings
In order to more clearly illustrate the technical solutions of the present application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. The accompanying drawings, which form a part hereof, illustrate embodiments of the present application and, together with the description, serve to explain the present application and not to limit the application unduly, and to enable a person skilled in the art to make and use other drawings without the benefit of the present inventive subject matter.
Fig. 1 is a schematic flow chart of a control method of an LED liquid crystal display assembly according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a control system for an LED liquid crystal display module according to an embodiment of the present application.
Reference numerals illustrate: the system comprises an inertia analysis module 11, a standard brightness analysis module 12, a first brightness deviation analysis module 13, a second brightness deviation analysis module 14, a brightness control limit optimizing module 15, a defect area detection module 16, a brightness control compensation optimizing module 17 and a brightness control module 18.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application and not all of the embodiments of the present application, and it should be understood that the present application is not limited by the example embodiments described herein.
The terminology used in the description is for the purpose of describing embodiments only and is not intended to be limiting of the application. As used in this specification, the singular terms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises" and/or "comprising," when used in this specification, specify the presence of steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other steps, operations, elements, components, and/or groups thereof.
Unless defined otherwise, all terms (including technical and scientific terms) used in this specification should have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Terms, such as those defined in commonly used dictionaries, should not be interpreted in an idealized or overly formal sense unless expressly so defined herein. Like numbers refer to like elements throughout.
It should be noted that, the user information (including, but not limited to, user equipment information, user personal information, etc.) and the data (including, but not limited to, data for presentation, analyzed data, etc.) referred to in the present application are information and data authorized by the user or sufficiently authorized by each party.
Example 1
Fig. 1 is a diagram of a control method of an LED liquid crystal display assembly according to an embodiment of the present application, where the method includes:
acquiring first ambient brightness based on a photoreceptor to perform operation inertia analysis to obtain inertia display brightness;
the embodiment of the application provides a control method of an LED liquid crystal display assembly, which is applied to a control system of the LED liquid crystal display assembly, wherein the system is a system platform for executing any step in the method, the system is deployed on a liquid crystal display, the liquid crystal display comprises a main LED array, an auxiliary LED array and a photoreceptor, the main LED array consists of a plurality of unit main LED arrays, and each unit main LED array can comprise a plurality of LED lamp beads. The auxiliary LED array is composed of a plurality of unit auxiliary LED arrays, the unit auxiliary LED arrays are distributed in the array center of the unit main LED array, the unit auxiliary LED arrays at least comprise a miniLED and a brightness sensor, the auxiliary LED arrays are generally responsible for providing auxiliary light sources or being used for special display effects, for example, the unit auxiliary LED arrays can be used for achieving local brightening or dynamic backlight and other effects, the miniLED is an LED lamp bead with small size and high brightness, and the brightness sensor is used for sensing the display brightness of the main LED array. The photoreceptor is responsible for sensing light in the liquid crystal display and converting it into a usable digital signal, which may be a CCD or CMOS sensor, responsible for capturing light reflected or transmitted through the liquid crystal display.
The first ambient brightness generally refers to the real-time ambient brightness of the liquid crystal display when in use, and can be acquired through the photoreceptor. And further performing operation inertia analysis on the first ambient brightness, namely analyzing the historical operation habit of the liquid crystal display user under the scene of the ambient brightness identical to the first ambient brightness, namely extracting the most frequent display brightness in the history as inertia display brightness. Specifically, the control terminal of the liquid crystal display is connected to collect and acquire the brightness display record when the ambient brightness is the same as the first ambient brightness in a period of time, and the most frequent display brightness is extracted from the brightness display record as the inertia display brightness.
When a plurality of liquid crystal display users are provided, the operation habit brightness of each user is memorized, the face recognition is carried out on the current user by adopting the existing face recognition technology, the corresponding brightness display record is acquired aiming at the face recognition result of the current user, and then the operation inertia analysis is carried out, so that the inertia display brightness is obtained.
Performing standard brightness analysis based on the first ambient brightness to obtain standard display brightness, and calculating display brightness deviation of the inertial display brightness and the standard display brightness;
And carrying out standard brightness analysis based on the first ambient brightness to obtain standard display brightness, wherein the standard display brightness can be understood as standard required brightness appointed by aiming at the first ambient brightness, which is set by a person skilled in the art, and a standard brightness threshold can be respectively established by a person skilled in the art aiming at different ambient brightness, and the standard display brightness is obtained by carrying out matching of the standard brightness threshold according to the acquired first ambient brightness. And further calculating a brightness difference value between the inertial display brightness and the standard display brightness as a display brightness deviation.
When the display brightness deviation is smaller than or equal to a first brightness deviation threshold value, adding the inertial display brightness into brightness adjustment requirement information;
when the display brightness deviation is larger than the first brightness deviation threshold value, adding the standard display brightness into brightness adjustment requirement information;
the first luminance deviation threshold is set by a person skilled in the art, and a deviation which is allowed to exist when luminance control is set according to actual conditions can be used as the first luminance deviation threshold. Comparing the display brightness deviation with a first brightness deviation threshold, and when the display brightness deviation is smaller than or equal to the first brightness deviation threshold, indicating that the display brightness deviation is within an allowable deviation range, adding the inertia display brightness into brightness adjustment requirement information, namely taking the operation habit of a user as a subsequent control target, and controlling the LED liquid crystal display assembly. When the display brightness deviation is larger than the first brightness deviation threshold, the display brightness deviation is beyond the allowable deviation range, the standard display brightness is added into brightness adjustment requirement information, namely, the standard display brightness is used as a subsequent control target, and the LED liquid crystal display assembly is controlled, so that the adaptation degree of brightness compensation control and user operation habit is improved under the condition that the first brightness deviation threshold is met.
Performing brightness control limit optimization on the main LED array based on the brightness adjustment demand information to generate a main LED array limit control state;
and carrying out brightness control limit optimization on the main LED array based on the brightness adjustment demand information to generate a main LED array limit control state, and colloquially analyzing the current intensity based on the brightness adjustment demand information, converting the brightness adjustment demand information into the current demand intensity, and generating the main LED array limit control state by using the current demand intensity, wherein the specific implementation process is as follows.
In a preferred embodiment, further comprising:
according to the brightness adjustment demand information, mapping a unit main LED array demand brightness analysis table to obtain unit main LED array demand brightness; traversing a plurality of unit main LED arrays to analyze the required current according to the required brightness of the unit main LED arrays, and generating a plurality of current required intensities; and carrying out brightness control limit optimization on the main LED array according to the current demand intensities to generate a main LED array limit control state.
In a preferred embodiment, further comprising:
extracting a first unit main LED array of the plurality of unit main LED arrays, and collecting first control record data of the unit main LED array required brightness constraint based on a first brightness sensor number of a first unit auxiliary LED array of the first unit main LED array, wherein the first control record data comprises first incoming current record time sequence information; constructing a first enhancement curve according to the first introduced current recording sequence; extracting a plurality of enhancement gradient features of the first enhancement curve, and evaluating a centralized value to obtain a standard enhancement gradient, wherein the standard enhancement gradient represents the current intensity required to be improved after unit service time meets the unit main LED array demand brightness; the first current record time sequence information comprises a latest current record value and a latest monitoring record time, the standard enhancement gradient is combined for carrying out current enhancement analysis, the current demand intensity of a first unit main LED array is obtained, and the current demand intensity is added into the current demand intensities.
In a preferred embodiment, further comprising:
configuring a current threshold for the main LED array; when the current demand intensity of the ith unit of main LED array of the plurality of current demand intensities is smaller than or equal to the current threshold, taking the current demand intensity of the ith unit of main LED array as the limit control state of the ith unit of main LED array; when the current demand intensity of the ith unit of main LED array of the plurality of current demand intensities is larger than the current threshold, taking the current threshold as the limit control state of the ith unit of main LED array; and adding the i-th unit main LED array limit control state into the main LED array limit control state.
And according to the brightness adjustment demand information, mapping a unit main LED array demand brightness analysis table to obtain unit main LED array demand brightness, wherein the unit main LED array demand brightness analysis table stores data tables of unit array brightness demands and overall brightness demands which are in one-to-one correspondence, the unit main LED array demand brightness analysis table is constructed by a person skilled in the art after actual testing aiming at different brightness demands, the main LED array consists of a plurality of unit main LED arrays, the overall brightness demands are the overall brightness of a plurality of unit main LED arrays in the main LED array, and the unit array brightness demands refer to the brightness demands respectively corresponding to the plurality of unit main LED arrays in the main LED array. And matching the overall brightness requirement in a unit main LED array requirement brightness analysis table according to the brightness adjustment requirement information, and then acquiring the bit array brightness requirement corresponding to the matched overall brightness requirement as the unit main LED array requirement brightness.
Further according to the unit main LED array demand brightness, traversing a plurality of unit main LED arrays to analyze the demand current, generating a plurality of current demand intensities, namely, controlling the current intensity to realize the brightness control of the unit main LED arrays, wherein the plurality of current demand intensities are the current intensities required when the plurality of unit main LED arrays are controlled to reach the unit main LED array demand brightness, and the specific acquisition process is as follows:
and extracting any unit main LED array of the plurality of unit main LED arrays to be recorded as a first unit main LED array, wherein each unit auxiliary LED array corresponds to a brightness sensor, the unit auxiliary LED arrays are distributed at the array center of the unit main LED arrays, the brightness sensors are used for collecting the display brightness of the unit main LED arrays around the unit auxiliary LED arrays, and unique numbers are set for each brightness sensor so as to facilitate subsequent calling. And acquiring first control record data of unit main LED array demand brightness constraint based on a first brightness sensor number of a first unit auxiliary LED array of the first unit main LED array, namely acquiring a plurality of groups of access current records with brightness meeting the unit main LED array demand brightness as the first control record data through the first brightness sensor in the control process, wherein the first control record data comprises first access current record time sequence information, and the first access current record time sequence information comprises a latest access current record value and a latest monitoring record time.
According to the first current recording sequence, a first enhancement curve is constructed, that is, in order to ensure that the first unit main LED array continuously meets the unit main LED array required brightness, the current intensity of the current to be input needs to be enhanced, therefore, according to the latest current recording value and the latest monitoring recording time in the first current recording time sequence information, current intensity change analysis is carried out, the current intensity change value of the latest current along with the latest monitoring recording time is obtained as a plurality of enhancement gradient features, and the first enhancement curve is constructed and comprises a plurality of enhancement gradient features. Extracting a plurality of enhancement gradient features of the first enhancement curve, evaluating a centralized value, namely removing discrete data in the enhancement gradient features, solving a mean value of the centralized data to serve as a standard enhancement gradient, wherein the standard enhancement gradient represents current intensity required to be improved when unit service time meets the unit main LED array demand brightness, specifically, four-level difference analysis can be carried out on the enhancement gradient features, namely sequencing the enhancement gradient features from small to large or from large to small, extracting enhancement gradient features at 25% of positions of the total number and enhancement gradient features at 75% of positions of the total number in the sequencing result, constructing a section by using the two enhancement gradient features, screening the enhancement gradient features at the section from the enhancement gradient features, carrying out mean value calculation, and taking a mean value calculation result as a standard enhancement gradient. And carrying out required current enhancement analysis by combining the standard enhancement gradient, wherein the standard enhancement gradient refers to current change intensity, the required current reaching the brightness adjustment required information is matched according to the brightness adjustment required information, the standard enhancement gradient is added with the required current, the obtained result is the current required intensity of the first unit main LED array, the current required intensity of the first unit main LED array is added into the current required intensities, and the like, so that the current required intensities of the unit main LED arrays respectively corresponding to other unit main LED arrays are obtained to form the current required intensities. Therefore, analysis of current demand intensity is achieved, when brightness control is conducted later, the brightness of the main LED array continuously meets the demand brightness of the unit main LED array, and brightness control accuracy is improved.
And further optimizing the brightness control limit of the main LED array according to the current demand intensities to generate a main LED array limit control state, wherein the specific process is as follows:
and configuring an incoming current threshold for the main LED array, wherein the incoming current threshold refers to the maximum current which can be fed when the main LED array works, namely, exceeding the threshold can lead to the failure of the main LED array, such as burning out, and the incoming current threshold can be read according to a use manual of the main LED array, namely, rated working current. When the i-th unit main LED array current demand intensity of the plurality of current demand intensities is smaller than or equal to the input current threshold, indicating that the plurality of current demand intensities are within rated working current, and taking the i-th unit main LED array current demand intensity as the i-th unit main LED array limit control state, wherein the i-th unit main LED array current demand intensity refers to the i-th current demand intensity in the plurality of current demand intensities, the plurality of current demand intensities correspond to the plurality of unit main LED arrays, and i is an integer larger than or equal to 1.
When the current demand intensity of the ith unit main LED array of the plurality of current demand intensities is larger than the input current threshold, the current demand intensity of the ith unit main LED array of the plurality of current demand intensities exceeds the rated working current, and if the operation control is carried out by the current demand intensity of the ith unit main LED array, the ith unit main LED array is burnt out, so that the input current threshold is used as the limit control state of the ith unit main LED array in order to ensure the operation safety of the ith unit main LED array. And adding the i-th unit main LED array limit control state into the main LED array limit control state. Therefore, the limit control state of the main LED array is determined by comparing the current demand intensities with the threshold value of the introduced current, and the operation safety of the main LED array is ensured while the control precision is ensured.
Detecting whether a brightness control defect area exists in the limit control state of the main LED array through a brightness sensor;
the brightness sensor is used for detecting and recording the brightness of the main LED array and detecting the current flowing in the main LED array, specifically, the main LED array is controlled in the limit control state of the main LED array, the main LED array can lighten at the moment, the brightness sensor is used for detecting the display brightness and the current flowing in of each unit main LED array in the main LED array, the current flowing in is compared with a plurality of current demand intensities of the unit main LED arrays, if the current flowing in can not meet the plurality of current demand intensities, the defect area of brightness control is indicated, and the unit main LED array with the current flowing in which can not meet the current demand intensity is taken as the defect area of brightness control.
If the LED array exists, introducing an auxiliary LED array to perform brightness control compensation optimizing, and generating an auxiliary LED array control state and a main LED array control state;
if the brightness control defect area exists, the auxiliary LED array is introduced to perform brightness control compensation optimizing, namely, the auxiliary LED array is used for performing brightness compensation through units distributed in the center of the array of the brightness control defect area, and an auxiliary LED array control state and a main LED array control state are generated, wherein the specific process is as follows.
In a preferred embodiment, further comprising:
the brightness control defect area comprises N defect unit main arrays, N is more than or equal to 1, and N is an integer; obtaining a first brightness constraint interval of a first defect unit main array of the N defect unit main arrays, and obtaining a second brightness constraint interval of a first unit auxiliary array, wherein the first unit auxiliary array is a light compensation array of the first defect unit main array, and the first unit auxiliary array and the first defect unit main array are provided with mutually independent current control channels; based on the first brightness constraint interval and the second brightness constraint interval, carrying out random value taking to obtain a first brightness value taking result and a second brightness value taking result, and executing training of a brightness coupling channel to generate coupling prediction brightness, wherein the brightness coupling channel is obtained by training convergence based on unit main array brightness record data, unit auxiliary array brightness record data and coupling brightness identification data; when the deviation between the coupling predicted brightness and the unit main LED array required brightness is smaller than or equal to a third brightness deviation threshold value, adding the first brightness value result and the second brightness value result into a first defect unit main array solution set to be optimized, and adding N solution sets to be optimized, wherein the first defect unit main array solution set to be optimized at least has a preset number of solutions; and sorting the N solution sets to be optimized to obtain the control state of the auxiliary LED array and the control state of the main LED array.
In a preferred embodiment, further comprising:
randomly extracting a solution from the N solution sets to be optimized respectively for enumeration to obtain a plurality of overall control solutions; constructing a sorting fitness function, wherein the sorting fitness function is a minimum value optimization function:
，
wherein,characterization of the sorting fitness of the kth global control solution,/->Characterizing the kth overall control solution, +.>The current of the first defective main array characterizing the kth overall control solution, +.>The current of the first auxiliary array characterizing the kth overall control solution, +.>To reduce the function +.>And->For reducing the adjusting factor, the adjusting factor is more than or equal to 2;
and traversing the plurality of overall control solutions to carry out minimum value sorting according to the sorting fitness function, and obtaining the auxiliary LED array control state and the main LED array control state.
The brightness control defect area comprises N defect unit main arrays, wherein N is more than or equal to 1, and N is an integer. And obtaining a first brightness constraint interval of a first defect unit main array of the N defect unit main arrays, wherein the first brightness constraint interval is 0 to the limit brightness, and the limit brightness is the brightness reached by the first defect unit main array in the limit control state of the unit main LED array. And obtaining a second brightness constraint interval of the first unit auxiliary array, wherein the second brightness constraint interval refers to a brightness range which can be achieved by the first unit auxiliary array, and the second brightness constraint interval can be read according to a using manual or obtained through an actual test. The first unit auxiliary array is an optical compensation array of the first defective unit main array, and the first unit auxiliary array and the first defective unit main array have current control paths independent of each other.
And carrying out random value taking on the basis of the first brightness constraint interval and the second brightness constraint interval to obtain a first brightness value taking result and a second brightness value taking result, carrying out training of a brightness coupling channel to generate coupling prediction brightness, wherein the coupling prediction brightness is the brightness superposition effect of the first brightness value taking result and the second brightness value taking result, the brightness coupling channel is obtained by training convergence on the basis of unit main array brightness record data, unit auxiliary array brightness record data and coupling brightness identification data, wherein the unit main array brightness record data, the unit auxiliary array brightness record data and the coupling brightness identification data can be obtained by on-site test, namely carrying out brightness random adjustment on the unit main array and the unit auxiliary array and carrying out brightness recording through a brightness touch sensor to obtain the unit main array brightness record data and the unit auxiliary array brightness record data, and simultaneously carrying out detection record on the brightness superposition effect of the unit main array and the unit auxiliary array to obtain the coupling brightness identification data. The brightness coupling channel is an existing machine learning model, such as a neural network, takes unit main array brightness record data and unit auxiliary array brightness record data as inputs of the brightness coupling channel, and uses coupling brightness identification data to monitor and adjust the output of the brightness coupling channel, so that the output result is consistent with the coupling brightness identification data, and the brightness coupling channel is trained to a convergence state. And analyzing the first brightness value result and the second brightness value result through the brightness coupling channel, and outputting the coupling predicted brightness.
When the deviation between the coupling predicted brightness and the unit main LED array required brightness is smaller than or equal to a third brightness deviation threshold, adding the first brightness value result and the second brightness value result into a first defect unit main array solution set to be optimized, wherein the first defect unit main array solution set to be optimized at least has a preset number of solutions, and the preset number is set by a person skilled in the art, such as 100. The same method is adopted to obtain N to-be-optimized solution sets corresponding to the N main arrays of the defect units respectively, and N to-be-optimized solution sets are obtained. And sorting the N solution sets to be optimized, namely screening the solution sets to be optimized in the N solution sets to be optimized, and obtaining N solution sets to be optimized with the best overall control effect as the auxiliary LED array control state and the main LED array control state. Therefore, the brightness compensation analysis of the defect unit main array is realized, and the brightness compensation accuracy is improved.
Sorting the N solution sets to be optimized, and obtaining the auxiliary LED array control state and the main LED array control state comprises the following steps: and randomly extracting a solution from the N solution sets to be optimized respectively for enumeration to obtain a plurality of overall control solutions, wherein each overall control solution comprises N solutions to be optimized.
Constructing a sorting fitness function, wherein the sorting fitness function is a minimum value optimization function:
，
wherein,characterizing the sorting fitness of the kth overall control solution, k being an integer greater than or equal to 1,/and>characterizing the kth overall control solution, +.>The current flowing in the first defect main array, which characterizes the kth overall control solution, can be detected by a brightness sensor, and is obtained,/->The current of the first auxiliary array characterizing the kth overall control solution can be detected and obtained by a brightness sensor, +.>To reduce the function +.>And->Adjustment for downsizingFactor ∈2, specifically set by the person skilled in the art. The addition calculation of the current is carried out on the defect main array and the defect auxiliary array of each integral control solution, and the addition calculation result is reduced, so that the numerical comparison is facilitated.
And traversing the plurality of integral control solutions to carry out minimum value sorting according to the sorting fitness function, namely traversing the plurality of integral control solutions to carry out brightness control, detecting and acquiring the introduced current by a brightness touch sensor to substitute the sorting fitness function to obtain the sorting fitness of the plurality of integral control solutions, screening the integral control solutions corresponding to the minimum sorting fitness from the sorting fitness to extract the brightness value results of the N defective unit main arrays from the sorting fitness to serve as the main LED array control state, and extracting the brightness value results of the unit auxiliary arrays to serve as the auxiliary LED array control state. And the defect unit main array and the defect unit auxiliary array are combined to perform brightness compensation optimizing, so that the brightness compensation accuracy is improved, the current is minimized, and the technical effect of saving energy is realized while the compensation effect is ensured.
And controlling the brightness of the liquid crystal display according to the auxiliary LED array control state and the main LED array control state.
And controlling the brightness of the liquid crystal display according to the auxiliary LED array control state and the main LED array control state, so as to improve the brightness control accuracy of the liquid crystal display.
In a preferred embodiment, further comprising:
detecting first ambient brightness through a photoreceptor of a liquid crystal display, and comparing the first ambient brightness with reference ambient brightness to obtain ambient brightness deviation, wherein the reference ambient brightness is reference brightness of initial display brightness; when the ambient brightness deviation is greater than or equal to a second brightness deviation threshold value, performing operation inertia analysis according to the first ambient brightness to obtain inertia display brightness; and when the ambient brightness deviation is smaller than the second brightness deviation threshold value, executing the initial display brightness.
The first ambient brightness is detected by the photoreceptor of the liquid crystal display and compared with the reference ambient brightness to obtain the ambient brightness deviation, wherein the reference ambient brightness is the reference brightness of the initial display brightness, namely the ambient brightness of the initial display of the liquid crystal display, and the photoreceptor can detect and store the ambient brightness in real time, so that the ambient brightness detected during the initial display of the liquid crystal display is only required to be called from the control center of the photoreceptor to serve as the reference ambient brightness. The second brightness deviation threshold is set by a person skilled in the art, and environmental brightness deviation with negligible influence on the brightness of the liquid crystal display can be selected in combination with practical experience, when the environmental brightness deviation is larger than or equal to the second brightness deviation threshold, the influence of the change of the environmental brightness on the brightness of the liquid crystal display is larger, and at the moment, the operation inertia analysis is performed according to the first environmental brightness, so that the inertia display brightness is obtained. When the ambient brightness deviation is smaller than the second brightness deviation threshold, the influence of the change of the bright ambient brightness on the brightness of the liquid crystal display is negligible, so that the initial display brightness is executed, that is, the initial display brightness is subjected to operation inertia analysis, and the inertia display brightness is obtained. Therefore, through the analysis of the change of the ambient brightness, the adaptation degree of the inertial display brightness and the environment is ensured, and the matching property of brightness compensation and the environment change is further improved.
Based on the above analysis, the one or more technical solutions provided in the present application can achieve the following beneficial effects:
1. by performing deviation analysis on the inertial display brightness and the standard display brightness, brightness adjustment requirement information is obtained according to display brightness deviation, and the adaptation degree of brightness compensation control and user operation habit is improved while brightness requirements are met.
2. And carrying out brightness control limit optimizing on the main LED array based on brightness adjustment demand information to generate a main LED array limit control state, detecting whether a brightness control defect area exists in the main LED array limit control state through a brightness sensor, if so, introducing an auxiliary LED array to carry out brightness control compensation optimizing to generate an auxiliary LED array control state and a main LED array control state, and carrying out liquid crystal display brightness control according to the auxiliary LED array control state and the main LED array control state, thereby achieving the technical effect of ensuring the operation safety of the main LED array while ensuring the control precision through line brightness control limit optimizing.
3. Detecting whether a brightness control defect area exists in a main LED array limit control state or not through a brightness sensor, if so, introducing an auxiliary LED array to perform brightness control compensation optimization, generating an auxiliary LED array control state and a main LED array control state, performing liquid crystal display brightness control according to the auxiliary LED array control state and the main LED array control state, realizing brightness compensation on the brightness control defect area, reducing the input current while improving brightness compensation accuracy through brightness control compensation optimization, ensuring LED operation safety through brightness control compensation optimization, and reducing the input current while improving brightness compensation accuracy and ensuring LED operation safety.
Example two
Based on the same inventive concept as the control method of an LED liquid crystal display assembly in the foregoing embodiment, as shown in fig. 2, the present application further provides an LED liquid crystal display assembly control system, which includes:
the operation inertia analysis module 11 is used for performing operation inertia analysis based on the first environment brightness acquired by the photoreceptor to obtain inertia display brightness;
a standard luminance analyzing module 12, where the standard luminance analyzing module 12 is configured to perform standard luminance analysis based on the first ambient luminance, obtain a standard display luminance, and calculate a display luminance deviation between the inertial display luminance and the standard display luminance;
a first luminance deviation analysis module 13, where the first luminance deviation analysis module 13 is configured to add the inertial display luminance to luminance adjustment requirement information when the display luminance deviation is less than or equal to a first luminance deviation threshold;
a second luminance deviation analysis module 14, where the second luminance deviation analysis module 14 is configured to add the standard display luminance to the luminance adjustment requirement information when the display luminance deviation is greater than the first luminance deviation threshold;
the brightness control limit optimizing module 15 is used for carrying out brightness control limit optimizing on the main LED array based on the brightness adjustment demand information, and generating a main LED array limit control state;
A defect area detection module 16, wherein the defect area detection module 16 is configured to detect, by using a brightness sensor, whether a brightness control defect area exists in the limit control state of the main LED array;
the brightness control compensation optimizing module 17 is used for introducing an auxiliary LED array to perform brightness control compensation optimizing if the brightness control compensation optimizing module 17 exists, so as to generate an auxiliary LED array control state and a main LED array control state;
and the brightness control module 18 is used for controlling the brightness of the liquid crystal display according to the auxiliary LED array control state and the main LED array control state by the brightness control module 18.
Further, the system further comprises an ambient brightness deviation analysis module, the ambient brightness deviation analysis module comprising:
detecting first ambient brightness through a photoreceptor of a liquid crystal display, and comparing the first ambient brightness with reference ambient brightness to obtain ambient brightness deviation, wherein the reference ambient brightness is reference brightness of initial display brightness;
when the ambient brightness deviation is greater than or equal to a second brightness deviation threshold value, performing operation inertia analysis according to the first ambient brightness to obtain inertia display brightness;
and when the ambient brightness deviation is smaller than the second brightness deviation threshold value, executing the initial display brightness.
Further, the brightness control limit optimizing module 15 further includes:
according to the brightness adjustment demand information, mapping a unit main LED array demand brightness analysis table to obtain unit main LED array demand brightness;
traversing a plurality of unit main LED arrays to analyze the required current according to the required brightness of the unit main LED arrays, and generating a plurality of current required intensities;
and carrying out brightness control limit optimization on the main LED array according to the current demand intensities to generate a main LED array limit control state.
Further, the brightness control limit optimizing module 15 further includes:
extracting a first unit main LED array of the plurality of unit main LED arrays, and collecting first control record data of the unit main LED array required brightness constraint based on a first brightness sensor number of a first unit auxiliary LED array of the first unit main LED array, wherein the first control record data comprises first incoming current record time sequence information;
constructing a first enhancement curve according to the first introduced current recording sequence;
extracting a plurality of enhancement gradient features of the first enhancement curve, and evaluating a centralized value to obtain a standard enhancement gradient, wherein the standard enhancement gradient represents the current intensity required to be improved after unit service time meets the unit main LED array demand brightness;
The first current record time sequence information comprises a latest current record value and a latest monitoring record time, the standard enhancement gradient is combined for carrying out current enhancement analysis, the current demand intensity of a first unit main LED array is obtained, and the current demand intensity is added into the current demand intensities.
Further, the brightness control limit optimizing module 15 further includes:
configuring a current threshold for the main LED array;
when the current demand intensity of the ith unit of main LED array of the plurality of current demand intensities is smaller than or equal to the current threshold, taking the current demand intensity of the ith unit of main LED array as the limit control state of the ith unit of main LED array;
when the current demand intensity of the ith unit of main LED array of the plurality of current demand intensities is larger than the current threshold, taking the current threshold as the limit control state of the ith unit of main LED array;
and adding the i-th unit main LED array limit control state into the main LED array limit control state.
Further, the brightness control compensation optimizing module 17 further includes:
the brightness control defect area comprises N defect unit main arrays, N is more than or equal to 1, and N is an integer;
Obtaining a first brightness constraint interval of a first defect unit main array of the N defect unit main arrays, and obtaining a second brightness constraint interval of a first unit auxiliary array, wherein the first unit auxiliary array is a light compensation array of the first defect unit main array, and the first unit auxiliary array and the first defect unit main array are provided with mutually independent current control channels;
based on the first brightness constraint interval and the second brightness constraint interval, carrying out random value taking to obtain a first brightness value taking result and a second brightness value taking result, and executing training of a brightness coupling channel to generate coupling prediction brightness, wherein the brightness coupling channel is obtained by training convergence based on unit main array brightness record data, unit auxiliary array brightness record data and coupling brightness identification data;
when the deviation between the coupling predicted brightness and the unit main LED array required brightness is smaller than or equal to a third brightness deviation threshold value, adding the first brightness value result and the second brightness value result into a first defect unit main array solution set to be optimized, and adding N solution sets to be optimized, wherein the first defect unit main array solution set to be optimized at least has a preset number of solutions;
And sorting the N solution sets to be optimized to obtain the control state of the auxiliary LED array and the control state of the main LED array.
Further, the brightness control compensation optimizing module 17 further includes:
randomly extracting a solution from the N solution sets to be optimized respectively for enumeration to obtain a plurality of overall control solutions;
constructing a sorting fitness function, wherein the sorting fitness function is a minimum value optimization function:
，
wherein,characterization of the sorting fitness of the kth global control solution,/->Characterizing the kth overall control solution, +.>The current of the first defective main array characterizing the kth overall control solution, +.>The current of the first auxiliary array characterizing the kth overall control solution, +.>To reduce the function +.>And->For reducing the adjusting factor, the adjusting factor is more than or equal to 2;
and traversing the plurality of overall control solutions to carry out minimum value sorting according to the sorting fitness function, and obtaining the auxiliary LED array control state and the main LED array control state.
The specific example of the LED liquid crystal display device control method in the first embodiment is also applicable to the LED liquid crystal display device control system in the present embodiment, and those skilled in the art will clearly know the LED liquid crystal display device control system in the present embodiment through the foregoing detailed description of the LED liquid crystal display device control method, so that the detailed description thereof will not be repeated for brevity.
It should be understood that the various forms of flow shown above, reordered, added, or deleted steps may be used, as long as the desired results of the presently disclosed technology are achieved, and are not limited herein.
Note that the above is only a preferred embodiment of the present application and the technical principle applied. Those skilled in the art will appreciate that the present application is not limited to the particular embodiments described herein, but is capable of numerous obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the present application. Therefore, while the present application has been described in connection with the above embodiments, the present application is not limited to the above embodiments, but may include many other equivalent embodiments without departing from the spirit of the present application, the scope of which is defined by the scope of the appended claims.
Claims (8)
1. The utility model provides a LED liquid crystal display subassembly control method which characterized in that is applied to LED liquid crystal display subassembly control system, the system is disposed in the LCD, the LCD includes main LED array, auxiliary LED array and photoreceptor, main LED array comprises a plurality of unit main LED arrays, auxiliary LED array comprises a plurality of unit auxiliary LED arrays, the unit auxiliary LED array distributes in the array center of unit main LED array, the unit auxiliary LED array includes a miniLED and a luminance sensor at least, includes:
Acquiring first ambient brightness based on a photoreceptor to perform operation inertia analysis to obtain inertia display brightness; and
performing standard brightness analysis based on the first ambient brightness to obtain standard display brightness, and calculating display brightness deviation of the inertial display brightness and the standard display brightness;
when the display brightness deviation is smaller than or equal to a first brightness deviation threshold value, adding the inertial display brightness into brightness adjustment requirement information;
when the display brightness deviation is larger than the first brightness deviation threshold value, adding the inertial display brightness into brightness adjustment requirement information;
performing brightness control limit optimization on the main LED array based on the brightness adjustment demand information to generate a main LED array limit control state;
detecting whether a brightness control defect area exists in the limit control state of the main LED array through a brightness sensor;
if the LED array exists, introducing an auxiliary LED array to perform brightness control compensation optimizing, and generating an auxiliary LED array control state and a main LED array control state;
and controlling the brightness of the liquid crystal display according to the auxiliary LED array control state and the main LED array control state.
2. The method of claim 1, wherein operating the inertial resolution based on the photoreceptor capturing the first ambient brightness to obtain the inertial display brightness, further comprising:
Detecting first ambient brightness through a photoreceptor of a liquid crystal display, and comparing the first ambient brightness with reference ambient brightness to obtain ambient brightness deviation, wherein the reference ambient brightness is reference brightness of initial display brightness;
when the ambient brightness deviation is greater than or equal to a second brightness deviation threshold value, performing operation inertia analysis according to the first ambient brightness to obtain inertia display brightness;
and when the ambient brightness deviation is smaller than the second brightness deviation threshold value, executing the initial display brightness.
3. The method of claim 1, wherein performing brightness control limit optimization on the primary LED array based on the brightness adjustment demand information, generating a primary LED array limit control state, comprises:
according to the brightness adjustment demand information, mapping a unit main LED array demand brightness analysis table to obtain unit main LED array demand brightness;
traversing a plurality of unit main LED arrays to analyze the required current according to the required brightness of the unit main LED arrays, and generating a plurality of current required intensities;
and carrying out brightness control limit optimization on the main LED array according to the current demand intensities to generate a main LED array limit control state.
4. The method of claim 3, wherein traversing the plurality of unit primary LED arrays for demand current resolution based on the unit primary LED array demand brightness, generating a plurality of current demand intensities, comprises:
extracting a first unit main LED array of the plurality of unit main LED arrays, and collecting first control record data of the unit main LED array required brightness constraint based on a first brightness sensor number of a first unit auxiliary LED array of the first unit main LED array, wherein the first control record data comprises first incoming current record time sequence information;
constructing a first enhancement curve according to the first introduced current recording sequence;
extracting a plurality of enhancement gradient features of the first enhancement curve, and evaluating a centralized value to obtain a standard enhancement gradient, wherein the standard enhancement gradient represents the current intensity required to be improved after unit service time meets the unit main LED array demand brightness;
the first current record time sequence information comprises a latest current record value and a latest monitoring record time, the standard enhancement gradient is combined for carrying out current enhancement analysis, the current demand intensity of a first unit main LED array is obtained, and the current demand intensity is added into the current demand intensities.
5. The method of claim 3, wherein performing brightness control limit optimization on the primary LED array based on the plurality of current demand intensities, generating a primary LED array limit control state comprises:
configuring a current threshold for the main LED array;
when the current demand intensity of the ith unit of main LED array of the plurality of current demand intensities is smaller than or equal to the current threshold, taking the current demand intensity of the ith unit of main LED array as the limit control state of the ith unit of main LED array;
when the current demand intensity of the ith unit of main LED array of the plurality of current demand intensities is larger than the current threshold, taking the current threshold as the limit control state of the ith unit of main LED array;
and adding the i-th unit main LED array limit control state into the main LED array limit control state.
6. The method of claim 1, wherein introducing the secondary LED array for brightness control compensation optimization, if any, generates a secondary LED array control state and a primary LED array control state, comprising:
the brightness control defect area comprises N defect unit main arrays, N is more than or equal to 1, and N is an integer;
Obtaining a first brightness constraint interval of a first defect unit main array of the N defect unit main arrays, and obtaining a second brightness constraint interval of a first unit auxiliary array, wherein the first unit auxiliary array is a light compensation array of the first defect unit main array, and the first unit auxiliary array and the first defect unit main array are provided with mutually independent current control channels;
based on the first brightness constraint interval and the second brightness constraint interval, carrying out random value taking to obtain a first brightness value taking result and a second brightness value taking result, and executing training of a brightness coupling channel to generate coupling prediction brightness, wherein the brightness coupling channel is obtained by training convergence based on unit main array brightness record data, unit auxiliary array brightness record data and coupling brightness identification data;
when the deviation between the coupling predicted brightness and the unit main LED array required brightness is smaller than or equal to a third brightness deviation threshold value, adding the first brightness value result and the second brightness value result into a first defect unit main array solution set to be optimized, and adding N solution sets to be optimized, wherein the first defect unit main array solution set to be optimized at least has a preset number of solutions;
And sorting the N solution sets to be optimized to obtain the control state of the auxiliary LED array and the control state of the main LED array.
7. The method of claim 6, wherein sorting the N sets of solutions to be optimized to obtain the secondary LED array control state and the primary LED array control state comprises:
randomly extracting a solution from the N solution sets to be optimized respectively for enumeration to obtain a plurality of overall control solutions;
constructing a sorting fitness function, wherein the sorting fitness function is a minimum value optimization function:
，
wherein,characterization of the sorting fitness of the kth global control solution,/->Characterizing the kth overall control solution, +.>The current of the first defective main array characterizing the kth overall control solution, +.>The current of the first auxiliary array characterizing the kth overall control solution, +.>To reduce the function +.>And->For reducing the adjusting factor, the adjusting factor is more than or equal to 2;
and traversing the plurality of overall control solutions to carry out minimum value sorting according to the sorting fitness function, and obtaining the auxiliary LED array control state and the main LED array control state.
8. An LED liquid crystal display assembly control system for performing the steps of the method of any one of claims 1 to 7, the system being deployed on a liquid crystal display, the liquid crystal display comprising a primary LED array, a secondary LED array and a photoreceptor, the primary LED array being comprised of a plurality of unit primary LED arrays, the secondary LED array being comprised of a plurality of unit secondary LED arrays, the unit secondary LED arrays being distributed in an array center of the unit primary LED arrays, the unit secondary LED arrays comprising at least a miniLED and a brightness sensor, the system comprising:
The operation inertia analysis module is used for carrying out operation inertia analysis based on the first environment brightness acquired by the photoreceptor to obtain inertia display brightness; and
the standard brightness analysis module is used for carrying out standard brightness analysis based on the first environment brightness to obtain standard display brightness, and calculating display brightness deviation of the inertial display brightness and the standard display brightness;
the first brightness deviation analysis module is used for adding the inertial display brightness into brightness adjustment requirement information when the display brightness deviation is smaller than or equal to a first brightness deviation threshold value;
the second brightness deviation analysis module is used for adding the standard display brightness into brightness adjustment requirement information when the display brightness deviation is larger than the first brightness deviation threshold value;
the brightness control limit optimizing module is used for carrying out brightness control limit optimizing on the main LED array based on the brightness adjustment demand information to generate a main LED array limit control state;
the defect area detection module is used for detecting whether a brightness control defect area exists in the limit control state of the main LED array through a brightness sensor;
The brightness control compensation optimizing module is used for introducing an auxiliary LED array to perform brightness control compensation optimizing if the brightness control compensation optimizing module exists, and generating an auxiliary LED array control state and a main LED array control state;
and the brightness control module is used for controlling the brightness of the liquid crystal display according to the control state of the auxiliary LED array and the control state of the main LED array.
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| CN110970003A (en) * | 2019-12-24 | 2020-04-07 | 维沃移动通信有限公司 | Screen brightness adjusting method and device, electronic equipment and storage medium |
| CN113539187A (en) * | 2020-04-22 | 2021-10-22 | 京东方科技集团股份有限公司 | Dimming method of display device and display device |
| CN115588404A (en) * | 2022-11-24 | 2023-01-10 | 江苏锦花电子股份有限公司 | LED display screen control and adjustment system and method based on Internet of things |
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| CN110970003A (en) * | 2019-12-24 | 2020-04-07 | 维沃移动通信有限公司 | Screen brightness adjusting method and device, electronic equipment and storage medium |
| CN113539187A (en) * | 2020-04-22 | 2021-10-22 | 京东方科技集团股份有限公司 | Dimming method of display device and display device |
| CN115588404A (en) * | 2022-11-24 | 2023-01-10 | 江苏锦花电子股份有限公司 | LED display screen control and adjustment system and method based on Internet of things |
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