MiNi LED backlight control system and control method

Abstract

The invention relates to the technical field of backlight control, and discloses a MiNi LED backlight control system and method, and the method comprises the steps: executing a lighting parameter decomposition control strategy according to a global lighting instruction, and analyzing basic parameters into sub-parameters for different regions; all the sub-parameters are issued to the corresponding LED chips, and the sub-parameters control the LED lamp beads to emit light through the LED chips; executing a real-time basic parameter acquisition feedback strategy, and feeding back the acquired actual basic parameters in real time; difference parameters are calculated, and whether deviation exists in the current basic parameters of the LED lamp beads or not is judged; according to the parameter difference, executing a dynamic independent compensation adjustment strategy, dynamically adjusting the driving signal, and independently and dynamically compensating each LED lamp bead; continuously acquiring basic parameters by using high-frequency sampling, and adjusting the basic parameters of each LED lamp bead in real time; and S6, continuously optimizing the display effect and performing automatic correction in combination with dynamic compensation and brightness adjustment. And accurate control and quick response of the LED lamp beads are realized.

Description

Technical Field

[0001] The present invention relates to the technical field of backlight control, and specifically to a MiNi LED backlight control system and a control method thereof. Background Art

[0002] With the continuous development of display technology, as a new backlight solution, MiNi LED backlight technology has significant advantages in improving the brightness, contrast, and color expressiveness of displays. By using smaller-sized LED beads as the backlight source, MiNi LED backlight can achieve more refined regional dimming, thereby enhancing the dynamic range and detail performance of the display screen. However, the control of MiNi LED backlight also faces many challenges, such as how to achieve precise control of a large number of LED beads, how to ensure the uniformity of backlight brightness, and how to perform intelligent adjustment according to image content. Traditional LED backlight control methods have certain limitations in dealing with these challenges.

[0003] Existing MiNi LED backlight control methods usually have the following defects: insufficient control accuracy: it is difficult to achieve independent control of each Mini LED bead, resulting in poor uniformity of backlight brightness and prone to local overbrightness or overdarkness. Slow dynamic response: when the image content changes rapidly, the backlight adjustment speed cannot keep up with the image change speed, easily causing ghosting or image distortion problems. Low intelligence level: unable to perform intelligent backlight adjustment according to image content, resulting in an unsatisfactory display effect and unable to fully utilize the advantages of Mini LED backlight. Imperfect compensation mechanism: lacking a real-time basic parameter acquisition and feedback mechanism, unable to detect and correct the basic deviation of LED beads in a timely manner, affecting the stability and consistency of the display effect.

[0004] The MiNi LED backlight control method proposed in this solution realizes precise control and fast response of LED beads, combines intelligent adjustment according to image content, compensates for deviations in real time, dynamically optimizes the backlight effect, and significantly improves the display quality and user experience. Summary of the Invention

[0005] The present invention provides a MiNi LED backlight control system and a control method thereof, which are used to help solve the problems mentioned in the above background art.

[0006] In a first aspect, the present application provides a MiNi LED backlight control method, which adopts the following technical solution: The MiNi LED backlight control method includes: S1. Obtain the MiNi LED component configuration file and initialize the basic parameters of each MiNi LED backlight area; Execute the lighting parameter decomposition control strategy according to the global lighting instruction, divide the display panel into multiple independent control areas, and parse the basic parameters into sub-parameters for different areas; S2. Allocate target lighting parameters according to the display requirements of each area; Send all sub-parameters to the corresponding LED chips, and the sub-parameters control each LED bead to emit light through the LED chips; S3. Real-time obtain the actual basic parameters of all LED beads, execute the real-time basic parameter acquisition and feedback strategy, and real-time feedback the collected actual basic parameters in real-time; Set target sub-parameters, compare the collected actual basic parameters with the set target sub-parameters, calculate the difference parameters, and judge whether there is a deviation in the current LED bead basic parameters; S4. According to the parameter difference, execute the dynamic independent compensation adjustment strategy, dynamically adjust the drive signal, and perform dynamic compensation on each LED bead independently; S5. Continuously collect basic parameters using high-frequency sampling to form a fast closed-loop adjustment loop, real-time monitor all LED beads, and real-time adjust the basic parameters of each LED bead; S6. Combine dynamic compensation and brightness adjustment, continuously optimize the display effect, real-time monitor the backlight effect after detection and adjustment, compare the deviation between the actual brightness and the expected brightness, and perform automatic correction.

[0007] By initializing the parameters of the MiNi LED component, decomposing the control strategy according to the global lighting instruction, dividing the panel into multiple independent areas and allocating sub-parameters; real-time collecting the actual parameters of the LED beads, comparing with the target value to calculate the difference, executing the dynamic compensation adjustment strategy, and independently adjusting the drive signal of each LED bead; combining high-frequency sampling to construct a fast closed-loop control loop, continuously optimizing the brightness and display effect, and realizing high-precision and real-time backlight control.

[0008] Preferably, the execution of the lighting parameter decomposition control strategy according to the global lighting instruction and dividing the display panel into multiple independent control areas includes: Obtain the configuration file matched by the current MiNi LED backlight component, and the configuration file includes the ID numbers of each backlight area, the corresponding basic parameter information, and its distribution position information on the panel; Initialize the basic basic parameters of all MiNi LED backlight areas, and the basic parameters include the target brightness value, color temperature parameter, and rated power information; Construct a backlight area parameter table and establish a one-to-one mapping relationship between each backlight area and the control channel, so as to ensure that each backlight area has an independent and unique control path; Receive global lighting control instructions from the upper-level system, where the lighting instructions include target brightness settings, overall brightness levels, target color temperature values, and current display scene feature information; Define the entire MiNi LED display panel as a two-dimensional spatial region S. The system executes a lighting parameter decomposition control strategy to divide the display area into several sub-regions with independent control capabilities.

[0009] Initialize the basic parameters of each MiNi LED backlight area through a configuration file, establish a one-to-one mapping with the control channels, and achieve independent and precise control. The global lighting instructions combined with the area division strategy subdivide the display panel into multiple independently controlled sub-regions, effectively improving the flexibility and precision of backlight adjustment. This mechanism ensures personalized regulation of brightness and color temperature in each region, adapts to different display scene requirements, thereby significantly enhancing the overall picture uniformity, contrast, and color performance, and achieving a higher-quality display effect.

[0010] Preferably, the step of sending all sub-parameters to the corresponding LED chips, where the sub-parameters control the light emission of each LED lamp bead through the LED chips, includes: Obtain the brightness distribution information in the image frame corresponding to each independently controlled area, extract the brightness data of the image in this area through an image recognition module, and calculate the average brightness value of this area as the image brightness requirement required for this independently controlled area; Set the global brightness reference value of the system as the reference basis for brightness adjustment in each area, and calculate the brightness weight of each independently controlled area according to the relative relationship between the image brightness of each area and the global brightness reference value, which is used to measure the brightness allocation ratio of the area in the overall backlight; Combine the brightness weight with the maximum brightness output value allowed by the system to calculate the brightness target value of each independently controlled area as the brightness control reference for all LED lamp beads in this area; Set that each independently controlled area contains several LED lamp beads, and assign a unique number to each LED lamp bead to clarify its spatial position in this area; Construct corresponding control sub-parameter information for each LED lamp bead. The sub-parameters are jointly generated by the brightness target value of the lamp bead and its basic parameter information, which is used to guide subsequent drive signal adjustment and brightness output control.

[0011] Extract the area brightness requirement through image recognition, calculate the brightness weight in combination with the global brightness reference, and achieve fine brightness allocation at the area level. Each LED lamp bead has a unique number and control sub-parameters, ensuring that its brightness output precisely matches the image requirements, thereby improving the accuracy of backlight response and the uniformity of picture brightness, and enhancing the overall display quality and visual experience.

[0012] Preferably, the actual basic parameters of all LED lamp beads are obtained in real time, and a real-time basic parameter acquisition and feedback strategy is executed to provide real-time feedback of the acquired actual basic parameters, including: Obtain the actual basic parameters of all LED backlight areas in real time, denoted as a vector The actual basic parameters include drive current, voltage, color temperature, brightness feedback value, and temperature information; Pack all the obtained actual basic parameters and upload them, along with the area ID and timestamp information t; Set the target sub-parameter vector of the LED backlight area as Execute the real-time parameter feedback processing flow, and compare and analyze the actual basic parameters with the target sub-parameters of the corresponding backlight area; Calculate the parameter difference And set the basic parameter deviation threshold ∈; When If there is no deviation in the basic parameters, no compensation will be triggered; When If there is a deviation in the basic parameters, compensation will be triggered.

[0013] By collecting the basic parameters of each LED backlight area in real time and comparing them with the target sub-parameters, the parameter difference is accurately calculated. Using the deviation threshold judgment mechanism, invalid compensation operations are effectively avoided, and dynamic compensation is only triggered when actual deviations occur, improving the system response efficiency and energy consumption control. This strategy ensures high accuracy and stability of backlight control, further optimizing display uniformity and reliability.

[0014] Preferably, according to the parameter differences, a dynamic independent compensation adjustment strategy is executed to dynamically adjust the drive signal, including: For the LED lamp beads determined to have deviations, according to the parameter difference Calculate the compensated control signal Where Represents the control signal vector; Send the compensated control signal To the driver channel corresponding to each LED lamp bead; Independently compensate each LED lamp bead to accurately compensate the overall brightness and dynamic response ability of the display panel; Record the compensation information of all LED lamp beads that have executed the dynamic independent compensation adjustment strategy. The compensation information includes compensation records, historical deviations, and control instructions.

[0015] By precisely compensating for the deviated LED lamp beads, calculating and sending personalized control signals, ensuring independent adjustment of each lamp bead, achieving high-precision brightness control and fast dynamic response. At the same time, record the compensation process and historical data to provide a basis for subsequent optimization and maintenance, improve the system intelligence level and long-term stability, and significantly enhance the uniformity and adaptability of the display panel.

[0016] Preferably, the intelligent backlight adjustment strategy for image content is executed by using image recognition and analysis algorithms, and the image content in the display screen is obtained in real time, including: Extract the image data of the current display frame in real time and divide it into multiple image analysis sub-regions according to the structure corresponding to the display panel; extract the image feature parameters of each sub-region, including information such as average brightness, gray scale and brightness histogram, edge detail density and dynamic change rate, etc. The system maps the image feature parameters to the target backlight brightness values of the corresponding regions and organizes and generates a control instruction table; combines the backlight partition structure of the display panel to generate a corresponding adjustment command set. The system monitors the change of image content in real time. If the content change is detected, the intelligent backlight adjustment process is triggered to dynamically adjust the brightness output of each region, realizing precise backlight control based on image content.

[0017] Through real-time image analysis, combined with the display structure to generate precise backlight control instructions. When the image content changes, the system automatically triggers the intelligent adjustment process to dynamically optimize the brightness output of each region, realizing a high degree of coordination between the picture content and the backlight system. This strategy significantly improves the contrast, detail performance and energy consumption efficiency of the picture, and enhances the visual experience and display adaptability.

[0018] Preferably, by combining dynamic compensation and brightness adjustment, continuously optimize the display effect, monitor the backlight effect after detection and adjustment in real time, compare the deviation between the actual brightness and the expected brightness, and perform automatic correction, including: Fuse the dynamic independent compensation adjustment strategy and the intelligent backlight adjustment strategy of image content, and use a weighted fusion algorithm to generate a combined control brightness value. Among them, α is the fusion weight factor, and L v (x, y) is the correction value of dynamic independent compensation. Continuously display the brightness feedback values of each independent control region in the display panel, set the brightness deviation threshold ∈0, and compare it with the expected target brightness for comparison. Calculate the brightness difference When ΔL v > ∈0, then perform automatic correction. Readjust the brightness value of the corresponding region until it is within the deviation threshold range.

[0019] By providing real-time feedback on brightness data and setting deviation thresholds, the system can automatically detect and correct brightness deviations, ensuring that the brightness in each area remains stable within the expected range. This strategy enhances the adaptive ability and adjustment accuracy of the backlight system, achieving a more uniform and realistic display effect.

[0020] In a second aspect, the present application provides a MiNi LED backlight control system, which adopts the following technical solutions: The MiNi LED backlight control system includes: An acquisition module: used to acquire the MiNi LED component configuration file to initialize the basic parameters of each MiNi LED backlight area; An instruction decomposition module: used to execute a lighting parameter decomposition control strategy according to the global lighting instruction, divide the display panel into multiple independent control areas, and parse the basic parameters into sub-parameters for different areas; A target allocation module: used to allocate target lighting parameters according to the display requirements of each area; A parameter distribution module: used to distribute all sub-parameters to the corresponding LED chips to control the light emission of each LED bead; A real-time feedback module: used to obtain the actual basic parameters of all LED beads in real time and execute a real-time basic parameter acquisition and feedback strategy to feedback the actually acquired basic parameters; A dynamic compensation module: used to execute a dynamic independent compensation adjustment strategy according to parameter differences, dynamically adjust the drive signal to perform independent dynamic compensation for each LED bead; A high-frequency sampling module: used to continuously collect basic parameters using high-frequency sampling to form a fast closed-loop adjustment loop to achieve real-time monitoring and adjustment of the parameters of each LED bead; An intelligent backlight adjustment module: used to extract the image feature parameters of each image analysis sub-area and map these parameters to the target backlight brightness value, thereby generating a control instruction table; An optimized display effect module: used to monitor the adjusted backlight effect in real time, compare the deviation between the actual brightness and the expected brightness, and perform automatic correction.

[0021] The present invention has the following beneficial effects: 1. The MiNi LED backlight control method. The MiNi LED backlight control method realizes precise control of the display panel by acquiring the configuration file and initializing the basic parameters of each LED backlight area. The panel is divided into multiple independent control areas, and the lighting parameters are decomposed according to the global lighting instruction, enabling each area to be intelligently adjusted according to the image requirements. This area-based control improves the brightness uniformity and color expressiveness, thus significantly enhancing the user's visual experience.

[0022] 2. The MiNi LED backlight control method. This method obtains the parameters of LED beads in real time and executes an efficient feedback strategy to ensure that the system can promptly identify and correct any deviations. The dynamic independent compensation adjustment strategy enables each LED bead to perform personalized compensation according to actual needs, ensuring the optimization of overall brightness and dynamic response capabilities. This real-time monitoring and adjustment mechanism enhances the consistency and stability of the display effect and avoids the occurrence of uneven brightness phenomena.

[0023] 3. The MiNi LED backlight control method. By combining image recognition and analysis algorithms, the system can dynamically adjust the brightness of each region according to content changes, enhancing the adaptability of the display. By automatically correcting the deviation between the actual brightness and the expected brightness, the display effect is continuously optimized to ensure a consistent and reliable viewing experience in various scenarios. Overall, this method brings a better visual enjoyment to users and improves the intelligence level of display devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic flowchart of the method of the present invention.

[0025] Figure 2 It is a schematic structural diagram of the system of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Embodiment 1. Refer to Figure 1 , the MiNi LED backlight control method includes: S1. According to the global lighting instruction, execute the lighting parameter decomposition control strategy, divide the display panel into multiple independent control regions, and parse the basic parameters into sub-parameters for different regions, including: Obtain the configuration file matched with the current MiNi LED component. The configuration file includes the ID number, basic parameters, and physical distribution information of the backlight region; then initialize the basic parameters of all backlight regions, including key indicators such as brightness, color temperature, and power, and establish the mapping relationship between the backlight region parameter table and the control channel; receive the global lighting instruction, which contains information such as the overall brightness level, color temperature setting, and current display scene; based on the two-dimensional spatial structure of the display panel, the system divides it into multiple independent control regions, and each region serves as an independent control region for subsequent partition brightness adjustment and drive control.

[0028] By implementing fine initialization of the backlight area and independent area control, the brightness adjustment accuracy and response efficiency are improved, and the display consistency and adaptability are enhanced.

[0029] S2. Send all sub-parameters to the corresponding LED chips, and the sub-parameters control the light emission of each LED lamp bead through the LED chips, including: Obtain the brightness distribution I i，j (x, y) in the image frame corresponding to each independent control area, and calculate the average brightness as the image brightness requirement corresponding to the independent control area Set the global brightness reference as L g , and calculate the brightness weight ω of each independent control area i，j , According to the brightness weight ω of the independent control area i，j and the maximum brightness L max , calculate the brightness target value of this independent control area Set Z i，j There are K LED lamp beads in the independent control area, and the numbers are recorded as K = {k1, k2,..., k K}; among them, k h represents the h-th LED lamp bead; the sub-parameters of each LED lamp bead are where represents the basic parameter information of the LED lamp bead k h .

[0030] By accurately calculating the area brightness weight and target value, the on-demand distribution of area brightness is realized. At the same time, combined with the basic parameters of each LED lamp bead, sub-control parameters are generated to improve the adjustment accuracy and response speed, and ensure the uniformity and dynamic adaptability of the picture brightness.

[0031] S3. Real-time obtain the actual basic parameters of all LED lamp beads, execute the real-time basic parameter acquisition and feedback strategy, and the actually acquired basic parameters are fed back in real time, including: Real-time collect the actual basic parameters of all LED backlight areas and record them in vector form. The actual basic parameters include drive current, voltage, color temperature, brightness feedback value and temperature information; all collected parameters will be packaged and uploaded, and at the same time, the unique ID number of each backlight area and the corresponding timestamp information will be attached; set the target sub-parameter vector of each LED backlight area, and execute the real-time parameter feedback processing flow to compare and analyze the actual basic parameters with the corresponding target sub-parameters item by item; further calculate the difference between the parameters, and set the basic parameter deviation judgment threshold; if the parameter difference is within the threshold range, it is judged that there is no deviation in this backlight area and no compensation behavior is triggered; if the parameter difference exceeds the set threshold, it is considered that there is a deviation in this area, and the compensation strategy is automatically triggered to adjust its output state.

[0032] By collecting and feeding back the basic parameters of the LED lamp beads in real time, accurately comparing with the target parameters, and promptly judging whether there are deviations, compensation is triggered only when the threshold is exceeded, effectively avoiding waste of resources. This strategy improves the intelligence, stability and energy efficiency ratio of backlight control, ensuring the continuous stability of the display effect.

[0033] S4. According to the parameter differences, execute the dynamic independent compensation adjustment strategy, dynamically adjust the drive signal, and independently perform dynamic compensation for each LED lamp bead, including: For the LED lamp beads determined to have deviations, according to the parameter difference Calculate the compensated control signal where, represents the control signal vector; send the compensated control signal to the driver channel corresponding to each LED lamp bead; independently compensate each LED lamp bead separately, accurately compensating the overall brightness and dynamic response ability of the display panel; record the compensation information of all the LED lamp beads that have executed the dynamic independent compensation adjustment strategy, and the compensation information includes compensation records, historical deviations and control instructions.

[0034] By dynamically independently compensating and adjusting the drive signal, accurately adjusting each LED lamp bead to ensure precise control of brightness and response ability. At the same time, record the compensation history and deviations for subsequent optimization and maintenance, improving the stability, accuracy of the display effect and the system intelligence level.

[0035] S5. Utilize the image recognition and analysis algorithm to execute the intelligent backlight adjustment strategy for the image content, and obtain the image content in the display screen in real time, including: The system extracts the current display frame image data frame by frame in real time and divides it into multiple image analysis sub-regions in the same way as the display panel structure; extract the image feature parameters for each sub-region, including average brightness, grayscale and brightness histogram, edge and detail density, and dynamic change rate; map them to the target backlight brightness values of the corresponding regions, and then generate a control instruction table; the system constructs an adjustment command set according to the backlight partition structure and automatically triggers the intelligent backlight adjustment when the image content changes, and adjusts the brightness output of each LED sub-region in real time.

[0036] Through real-time image analysis and backlight partition adjustment, precise backlight adjustment is achieved when the image content changes. Dynamically optimize the brightness output of each region according to the image feature parameters, improve the fineness and adaptive ability of the display effect, and enhance the image uniformity and visual experience.

[0037] S6. Combine dynamic compensation and brightness adjustment to continuously optimize the display effect, monitor the backlight effect after detection and adjustment in real time, compare the deviation between the actual brightness and the expected brightness, and perform automatic correction, including: Integrate the dynamic independent compensation adjustment strategy and the intelligent backlight adjustment strategy of the image content, and use the weighted fusion algorithm to generate the joint control brightness value. Among them, α is the fusion weight factor, and L v (x, y) is the correction value of dynamic independent compensation; continuously display the brightness feedback value of each independent control area in the panel, set the brightness deviation threshold ∈0, and compare it with the expected target brightness Calculate the brightness difference When ΔL v > ∈0, automatic correction is performed; readjust the brightness value of the corresponding area until it is within the deviation threshold range.

[0038] By combining dynamic compensation and intelligent backlight adjustment, using the weighted fusion algorithm to optimize the brightness control, ensure that the brightness of each area is accurately adjusted. Through real-time feedback and automatic correction, improve the stability and accuracy of the display effect, and at the same time improve the intelligent adaptability and response speed of the system.

[0039] Example 2. Refer to Figure 2 , the MiNi LED backlight control system includes: Acquisition module: used to acquire the MiNi LED component configuration file to initialize the basic parameters of each MiNi LED backlight area; Instruction decomposition module: used to execute the lighting parameter decomposition control strategy according to the global lighting instruction, divide the display panel into multiple independent control areas, and parse the basic parameters into sub-parameters for different areas; Target allocation module: used to allocate the target lighting parameters according to the display requirements of each area; Parameter distribution module: used to distribute all sub-parameters to the corresponding LED chips to control the light emission of each LED bead; Real-time feedback module: used to obtain the actual basic parameters of all LED beads in real time, and execute the real-time basic parameter acquisition and feedback strategy to feedback the actually acquired basic parameters; Dynamic compensation module: used to execute the dynamic independent compensation adjustment strategy according to the parameter difference, dynamically adjust the drive signal to perform independent dynamic compensation for each LED bead; High-frequency sampling module: used to continuously collect the basic parameters using high-frequency sampling to form a fast closed-loop adjustment loop to realize real-time monitoring and adjustment of the basic parameters of each LED bead; Intelligent backlight adjustment module: It is used to extract the image feature parameters of each image analysis sub-region, map these parameters to the target backlight brightness value, and thus generate a control instruction table; Optimized display effect module: It is used to monitor the adjusted backlight effect in real time, compare the deviation between the actual brightness and the expected brightness, and perform automatic correction.

[0040] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0041] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. MiNi LED backlight control method, characterized in that: include, S1. Obtain the MiNi LED component configuration file and initialize the basic parameters of each MiNi LED backlight area; According to the global lighting instruction, the lighting parameter decomposition control strategy is executed, the display panel is divided into multiple independent control areas, and the basic parameters are parsed into sub-parameters for different areas; S2. Allocate target lighting parameters according to the display requirements of each area; All sub-parameters are sent to the corresponding LED chips, and the sub-parameters control the light emission of each LED lamp bead through the LED chip; S3, real-time acquisition of the actual basic parameters of all LED lamp beads, implementation of real-time basic parameter acquisition and feedback strategy, real-time feedback of the actual basic parameters acquired; Set the target sub-parameters, compare the actual basic parameters collected with the set target sub-parameters, calculate the difference parameters, and determine whether there is a deviation in the current basic parameters of the LED lamp beads; S4. According to the parameter difference, execute the dynamic independent compensation adjustment strategy, dynamically adjust the driving signal, and independently perform dynamic compensation for each LED lamp bead; S5, use high-frequency sampling to continuously collect basic parameters, form a fast closed-loop adjustment circuit, monitor all LED lamp beads in real time, and adjust the basic parameters of each LED lamp bead in real time; S6. Combine dynamic compensation and brightness adjustment to continuously optimize the display effect, monitor and detect the adjusted backlight effect in real time, compare the deviation between the actual brightness and the expected brightness, and make automatic corrections.

2. The MiNi LED backlight control method according to claim 1, characterized in that: The root executes the lighting parameter decomposition control strategy according to the global lighting instruction, and divides the display panel into multiple independent control areas, including: Get the configuration file matched by the current MiNi LED component, the configuration file includes the backlight area ID number, the backlight area basic parameters and distribution information; Initialize the basic parameter information of all MiNI LED backlight areas, including brightness, color temperature and power; establish a mapping relationship between the area parameter table and the control channel so that each backlight area corresponds to a unique control path; Receiving a global lighting instruction, wherein the global lighting instruction includes brightness information, overall brightness level, color temperature information, and display scene information; Set the entire display panel as a two-dimensional space area S, execute the lighting parameter decomposition control strategy, and divide the display panel into N×M independent control areas, recorded as Among them, S is the collection of all independent control areas, Z i，j Represents the independent control area of ​​the i-th row and j-th column.

3. The MiNi LED backlight control method according to claim 2, characterized in that: The method sends all sub-parameters to the corresponding LED chips, and the sub-parameters control the light emission of each LED lamp bead through the LED chip, including: Get the brightness distribution I in the image frame corresponding to each independent control area i，j (x, y), calculate the average brightness as the image brightness requirement corresponding to the independent control area Set the global brightness reference to L g , calculate the brightness weight ω of each independent control area i，j , According to the brightness weight ω of the independent control area i，j and maximum brightness L max , calculate the brightness target value of the independent control area Set Z i，j The independent control area contains n1 LED lamp beads, numbered as K = {k1, k2, ..., k n1 }, where k h Indicates the hth LED lamp bead; The sub-parameters of each LED lamp bead are in, Indicates LED lamp bead k h Basic parameter information.

4. The MiNi LED backlight control method according to claim 1, characterized in that: The real-time acquisition of the actual basic parameters of all LED lamp beads, the execution of the real-time basic parameter acquisition feedback strategy, and the real-time feedback of the collected actual basic parameters include: Get the actual basic parameters of all LED backlight areas in real time, recorded as vector The actual basic parameters include driving current, voltage, color temperature, brightness feedback value and temperature information; Package all the actual basic parameters obtained and upload them, along with the region ID and timestamp information t; Set the target sub-parameter vector of the LED backlight area to Execute the real-time parameter feedback processing flow to compare and analyze the actual basic parameters with the target sub-parameters of the corresponding backlight area; Calculate parameter difference And set the basic parameter deviation threshold ∈; when If there is no deviation in the basic parameters, compensation will not be triggered; when When the basic parameters deviate, compensation is triggered.

5. The MiNi LED backlight control method according to claim 1, characterized in that: The method of executing a dynamic independent compensation adjustment strategy according to the parameter difference and dynamically adjusting the driving signal includes: For LED lamp beads that are judged to be deviated, according to the parameter difference Calculate the compensated control signal in, represents the control signal vector; The compensated control signal Send it to the driver channel corresponding to each LED lamp bead; Each LED lamp bead is compensated independently to accurately compensate the overall brightness and dynamic response capability of the display panel; The compensation information of all LED lamp beads that have executed the dynamic independent compensation adjustment strategy is recorded, and the compensation information includes compensation records, historical deviations and control instructions.

6. The MiNi LED backlight control method according to claim 1, characterized in that: The method utilizes the image recognition and analysis algorithm to execute the intelligent backlight adjustment strategy of the image content and obtain the image content in the display screen in real time, including: Extract the image data of the current display frame frame by frame in real time; The whole frame image is divided according to a structure consistent with the display panel to obtain N×M image analysis sub-regions, so that each display panel corresponds to an image analysis sub-region; Extracting image feature parameters of each image analysis sub-region, wherein the image feature parameters include regional average brightness value, grayscale and brightness histogram distribution, edge and detail density index and dynamic change rate; According to the image feature parameters of each image analysis sub-area, the image feature parameters are mapped to the target backlight brightness value L o (x, y); organizing the mapped target backlight brightness value of each image analysis sub-area into a control instruction table; Generate a corresponding adjustment command set according to the display panel backlight partition structure; Acquire image content in real time, and trigger intelligent backlight adjustment if the image content changes; According to the real-time image content, the brightness of each area is dynamically adjusted, and the output brightness of the corresponding LED sub-area is adjusted in real time according to each image analysis sub-area according to the control instructions.

7. The MiNi LED backlight control method according to claim 1, characterized in that: The combination of dynamic compensation and brightness adjustment continuously optimizes the display effect, monitors and detects the adjusted backlight effect in real time, compares the deviation between the actual brightness and the expected brightness, and performs automatic correction, including: It integrates the dynamic independent compensation adjustment strategy and the intelligent backlight adjustment strategy of the image content, and uses a weighted fusion algorithm to generate a joint control brightness value. Among them, α is the fusion weight factor, L v (x, y) is the correction value of dynamic independent compensation; Continuously display the brightness feedback value of each independent control area in the panel, set the brightness deviation threshold ∈ 0, and compare it with the expected target brightness Make a comparison; Calculate brightness difference When ΔL v When >∈0, automatic correction is performed; Re-adjust the brightness value of the corresponding area until it is within the deviation threshold range.

8. A MiNi LED backlight control system, applied to the MiNi LED backlight control method according to any one of claims 1 to 7, characterized in that: include: Acquisition module: used to obtain the MiNi LED component configuration file to initialize the basic parameters of each MiNi LED backlight area; Instruction decomposition module: used to execute the lighting parameter decomposition control strategy according to the global lighting instruction, divide the display panel into multiple independent control areas, and parse the basic parameters into sub-parameters for different areas; Target allocation module: used to allocate target lighting parameters according to the display requirements of each area; Parameter sending module: used to send all sub-parameters to the corresponding LED chips to control the light emission of each LED lamp bead; Real-time feedback module: used to obtain the actual basic parameters of all LED lamp beads in real time, and implement the real-time basic parameter collection and feedback strategy to provide real-time feedback on the actual basic parameters collected; Dynamic compensation module: used to execute dynamic independent compensation adjustment strategy according to parameter differences, dynamically adjust the driving signal, and perform independent dynamic compensation for each LED lamp bead; High-frequency sampling module: used to continuously collect basic parameters using high-frequency sampling to form a fast closed-loop regulation circuit to achieve real-time monitoring and adjustment of the basic parameters of each LED lamp bead; Intelligent backlight adjustment module: used to extract image feature parameters of each image analysis sub-area and map these parameters to target backlight brightness values, thereby generating a control instruction table; Display effect optimization module: used to monitor the adjusted backlight effect in real time, compare the deviation between the actual brightness and the expected brightness, and make automatic corrections.

Images