Liquid crystal display energy-saving control method and system

Abstract

The invention relates to the technical field of energy-saving control, in particular to a liquid crystal display energy-saving control method and system, and the method comprises the following steps: obtaining the pixel brightness change times in continuous frames, judging a hopping region, reading the frequency difference value of adjacent regions, sorting and merging, recognizing the lower brightness of a heating region, and detecting voltage fluctuation to mark a locking period. And freezing the interval rearrangement brightness output structure, and generating an energy-saving control layout. According to the invention, through statistics of pixel brightness jump times and ratio determination, a high-fluctuation area is accurately identified, brightness frequency difference sorting and area fusion are combined to improve regulation and control continuity, temperature change trend determination is introduced to realize brightness down-regulation of a heating area, and a voltage jump amplitude sequence is utilized to analyze and lock a power supply stable period. The method is advantaged in that adjustment errors in an unstable state are avoided, a brightness output sequence is rearranged in a freezing period, rhythm consistency and energy efficiency collaboration of brightness control are maintained, and accuracy, stability and multi-dimensional adaptability of energy-saving regulation and control are enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of energy-saving control, and particularly to a liquid crystal display energy-saving control method and system. Background Art

[0002] The technical field of liquid crystal display energy-saving control includes control technologies for dynamically adjusting and optimizing the energy consumption of liquid crystal display devices during operation. The core content of this technical field lies in analyzing and intervening in the power consumption of the driving circuit, backlight system, and image signal processing process of the liquid crystal panel to reduce the overall power consumption. It mainly covers sub-directions such as liquid crystal driving voltage control, backlight brightness adjustment, and image data adjustment. By real-time monitoring the working state of the liquid crystal screen and combining energy-saving logic control algorithms, precise management of the energy consumption components is achieved. The technologies in this field are constantly evolving, tending to improve the energy efficiency performance of devices on the basis of ensuring image display quality, and are widely used in various liquid crystal display application scenarios such as televisions, notebooks, smartphones, and industrial control terminals.

[0003] Among them, the liquid crystal display energy-saving control method refers to achieving energy consumption control during the operation of liquid crystal displays by jointly setting the brightness adjustment parameters and image signal processing parameters in the liquid crystal display device. The technical matters targeted by this patent theme include the zonal dynamic adjustment of the backlight brightness, the optimal configuration of the liquid crystal driving voltage, and the analysis and modeling of the brightness distribution characteristics of the image content, and calculating the control strategy based on the scene brightness change and the characteristics of the displayed content. The specific method adopts a zonal brightness control method, divides the display area into brightness levels according to the content complexity, and determines the brightness requirements through a prediction model to achieve the coordinated regulation of the driving voltage and the backlight brightness, so as to implement energy-saving control under the condition of ensuring basic image clarity.

[0004] The prior art focuses on the static analysis of the brightness distribution characteristics and content complexity of the image content, lacks effective response to the jump of pixel brightness between frames, and fails to form a corresponding recognition logic when the energy consumption of the display area surges, resulting in some energy consumption hotspots not being regulated in time. At the same time, the temperature change trend is not introduced as a feedback index during the brightness adjustment process, ignoring the coupling relationship between the heating effect and the brightness output, which is likely to form local heat accumulation during long-term operation, affecting the stability and lifespan of the device. There is also no continuous monitoring and periodic analysis mechanism for the fluctuation of the power supply voltage, and the brightness control strategy lacks the ability to adapt to voltage jumps, posing a risk of mis-triggering regulation under unstable power supply conditions. The organization of the brightness output sequence does not consider the time freezing mechanism, resulting in a loose sorting structure in a high-frequency regulation environment and unable to support the lasting consistency of the energy-saving structure. These limitations will cause problems such as lagging energy-saving response, amplified brightness regulation error, temperature control imbalance, and intensified power supply impact in practical applications, making it difficult to meet the application requirements of high-precision energy-saving control. Summary of the Invention

[0005] The object of the present invention is to solve the disadvantages existing in the prior art, and a liquid crystal display energy-saving control method is proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solution: A liquid crystal display energy-saving control method includes the following steps: S1: Obtain the number of brightness change times of the pixels of the liquid crystal display panel in consecutive frames, count the number of pixels with brightness change exceeding the jump standard in a single area, calculate the jump ratio, and if it is higher than the set threshold, record the area as a jump area that requires energy-saving intervention; S2: Based on the jump area that requires energy-saving intervention, read the average brightness change times of adjacent areas, calculate and sort the jump frequency differences, merge the boundaries, unify the brightness control levels, and generate a light-emitting combination area; S3: Read the temperature change of the light-emitting part in the light-emitting combination area, calculate the temperature change amount in a continuous time period and sort it, identify the continuously rising temperature area, adjust the brightness to the lower limit of the combination level, and perform brightness compensation to generate a light-emitting control area; S4: Retrieve the voltage of the power supply line where the light-emitting control area is located, calculate the time period fluctuation amplitude, and if it is continuously lower than the stable threshold, mark it as a locked period, and suspend the brightness adjustment during this period to generate a stable output interval; S5: Extract the brightness output positions according to the stable output interval, sort them after unifying the control levels, and rearrange them according to the brightness structure of the frozen interval to generate a light-emitting control layout for energy-saving output.

[0007] As a further solution of the present invention, the jump area that requires energy-saving intervention includes jump pixel distribution, regional brightness fluctuation intensity, and jump ratio threshold. The light-emitting combination area includes a set of brightness jump frequency differences, regional boundary combination relationships, and unified control levels. The light-emitting control area includes a continuously rising temperature area, a lower limit of the brightness output level, and a brightness compensation distribution ratio. The stable output interval includes a stable power supply voltage section, a brightness adjustment freeze mark, and an output pause control signal. The light-emitting control layout for energy-saving output includes a brightness control level sequence, a frozen period index mapping, and an energy-saving sorting structure.

[0008] As a further solution of the present invention, the steps for obtaining the jump area that requires energy-saving intervention are as follows: S101: Based on the brightness value change sequence of all pixels in the liquid crystal display panel in consecutive picture frames, obtain the per-pixel brightness difference between adjacent frames, identify the number of pixel points with all brightness differences greater than the jump standard, and generate a jump pixel number map; S102: Call the number of jump pixels in the area in the jump pixel number map, obtain the total number of pixels in each area, and use the formula: S103: According to the jump ratio of each area in the regional jump ratio map, a judgment is made with a set jump ratio reference threshold, all areas with jump ratios higher than the threshold are screened, the corresponding area coordinate position and pixel composition are obtained and marked, and the jump area requiring energy-saving intervention is generated.

[0009] As a further solution of the present invention, the step of obtaining the light emitting combination area is: S201: based on the transition area requiring energy-saving intervention, calling the coordinate position corresponding to the transition area, collecting the number of brightness changes of pixels in the unit area between consecutive frames in the surrounding adjacent areas, averaging the number of brightness changes of all pixels in each adjacent area, and obtaining a brightness change mean map of the adjacent areas; S202: According to the adjacent region brightness change mean value map, call the brightness change mean value of the corresponding jump region, using the formula: ; Calculate the brightness change frequency difference of adjacent areas , sort them in order according to the numerical values ​​to obtain the hopping frequency difference sequence; in, Representative The brightness change frequency difference of adjacent areas, For the The number of pixels in the area, For the Location in adjacent area The number of pixel brightness changes, is the corresponding position in the jump area The number of brightness changes, is the corresponding pixel brightness jump variance, Represents the spatial position weight of the pixel; S203: Based on the top-ranked areas in the transition frequency difference sequence, determine the spatial continuity of the boundary range and the corresponding transition area. If there is a correlation, merge the boundary sets and use the frequency difference to adjust the grade division standard to generate a luminous combination area.

[0010] As a further solution of the present invention, the step of obtaining the luminescence control area is: S301: Based on the luminous combination area, collect temperature change records of the luminous parts in the area at multiple consecutive moments, perform difference calculation based on the temperature values ​​at adjacent moments, obtain the total temperature change of the luminous parts in the continuous time period, and obtain a regional temperature change amount sequence; S302: calling the regional temperature change sequence, identifying the regions in each region where the total temperature change in a continuous time period is positive, using the formula: ; Obtain the output level after brightness correction through calculation , compare the adjustment value with the lower limit of the combined level, and set the output level according to the judgment result to generate a brightness level adjustment sequence; Among them, is the brightness output level after adjustment of the th area, is the total number of frames in the continuous time period in the th area, is the temperature change amount of the th area at time ; is the pixel thermal response factor corresponding to the temperature change, is the brightness difference value at the edge of the th area, is the lower limit brightness value of the combined level; S303: According to the status of the adjusted area in the brightness level adjustment sequence, identify the unmarked area, perform mean comparison according to the adjacent brightness difference, and perform difference allocation compensation with reference to the combined level boundary to establish a light emission control area.

[0011] As a further solution of the present invention, the steps for obtaining the stable output interval are as follows: S401: Based on the light emission control area, call the voltage supply line data corresponding to the area, extract the voltage values within each power supply cycle according to the time period, divide them into multiple equal-interval time periods in chronological order, and obtain the continuous voltage value sequence within each time period to obtain a voltage interval sequence; S402: According to the voltage interval sequence, extract the difference between the voltage values at two consecutive time points within the time period, calculate the set of absolute values of all differences within the sequence, and construct a voltage fluctuation amplitude set within each time period. Call the power supply stability reference threshold, calculate the mean value of the voltage fluctuation amplitude set for each time period, and compare it with the reference threshold to obtain the voltage fluctuation comparison value for the time period; S403: According to the voltage fluctuation comparison value for the time period, judge whether the voltage fluctuations in multiple consecutive time periods are lower than the power supply stability reference threshold. If the condition is met, mark the time period sequence as the stable state, and on this basis, pause the brightness output adjustment operation for the stable state time period to obtain the stable output interval.

[0012] As a further solution of the present invention, the steps for obtaining the light emission control layout for energy-saving output are as follows: S501: Based on the stable output interval, extract all the brightness output positions within the time period according to the freeze cycle time index, and establish a brightness control set in the order of time index to obtain a brightness position set; S502: According to the set of brightness positions, read the brightness control levels corresponding to the positions, perform unified comparison of all control levels in the same dimension, arrange them in the order of brightness values, and obtain the order of brightness control levels; S503: According to the order of the brightness control levels, perform a rearrangement operation on the brightness change sequence, adjust the sorting order and map it to the corresponding positions of the light-emitting output structure, and form a continuous sorting structure on this basis to obtain the light-emitting control layout for energy-saving output.

[0013] A liquid crystal display energy-saving control system, comprising: The jump detection module obtains the brightness sequences of all pixels in consecutive frames of the liquid crystal panel, calculates the brightness difference between adjacent frames and compares it with the jump standard value, counts the number of pixels with excessive jump times, classifies them by region and calculates the jump ratio, compares with the reference ratio to screen out the numbers and coordinates of the excessive regions, and generates the jump regions that require energy-saving intervention; The region integration module calls the jump regions that require energy-saving intervention, reads the average number of brightness change times of the surrounding adjacent regions, calculates the difference from the marked regions and sorts them, selects the top four regions to perform boundary merging, and unifies the brightness change interval levels to generate the light-emitting combination regions; The temperature monitoring module calls the light-emitting combination regions, extracts the temperature records in consecutive time periods, calculates the difference between adjacent segments and determines the regions with positive changes, adjusts their brightness to the lower limit of the combination level, and compensates and adjusts the brightness of other regions according to the current brightness to generate the light-emitting regulation regions; The voltage determination module calls the light-emitting regulation regions, obtains the voltage values of each time period of their power supply lines, calculates the jump difference and compares it with the stable reference value, screens out the numbers of consecutive time periods that meet the conditions as the locked periods, suspends the brightness adjustment during the suspension period, and generates the stable output intervals; The output layout module calls the stable output intervals, extracts the brightness positions and control levels, sorts the brightness levels and then establishes the output order structure, maps the order to the region control positions to complete the brightness rearrangement, and generates the light-emitting control layout for energy-saving output.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are as follows: In the present invention, through the statistics of the pixel brightness jump times and ratio determination, the high-fluctuation regions are accurately identified, the regulation continuity is improved by combining the brightness frequency difference sorting and region fusion, the temperature change trend judgment is introduced to lower the brightness of the heating regions, the voltage jump amplitude sequence analysis is used to lock the stable power supply period, the adjustment error in the unstable state is avoided, the brightness output order is rearranged during the freezing period, the rhythm consistency and energy efficiency synergy of the brightness control are maintained, and the accuracy, stability and multi-dimensional adaptability of the energy-saving regulation are enhanced. Description of the Drawings

[0015] Figure 1This is the main process flow chart of the present invention; Figure 2 This is the acquisition flow chart of the jump region that requires energy-saving intervention in the present invention; Figure 3 This is the acquisition flow chart of the light-emitting combination region of the present invention; Figure 4 This is the acquisition flow chart of the light-emitting regulation region of the present invention; Figure 5 This is the acquisition flow chart of the stable output interval of the present invention; Figure 6 This is the acquisition flow chart of the light-emitting control layout for energy-saving output of the present invention. Detailed implementation manners

[0016] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0017] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present invention. In addition, in the description of the present invention, the meaning of "a plurality of" is two or more unless otherwise specifically defined.

[0018] Please refer to Figure 1 , a liquid crystal display energy-saving control method, including the following steps: S1: Obtain the number of brightness change times of all pixels in the liquid crystal display panel in consecutive picture frames. Based on the difference in pixel brightness between adjacent frames, count the number of pixels whose brightness change times in a single region exceed the jump standard. Convert the ratio of the number of jump pixels to the total number of region pixels, and determine whether the region jump ratio is higher than the set reference threshold. Record all display regions that meet the conditions to generate a jump region that requires energy-saving intervention; S2: Call the jump region that requires energy-saving intervention, read the average brightness change times from adjacent regions, calculate the difference in brightness jump frequencies between adjacent regions and the marked region in turn, then sort the difference results, merge the boundaries of the regions and unify the brightness regulation level division to generate a light-emitting combination region; S3: Call the light-emitting combination area, read the temperature change records of the light-emitting parts in the area, calculate the temperature change amounts within consecutive time periods and sort them, identify the areas where the temperature change amounts are continuously positive, adjust the brightness output level to the lower limit of the combination level, perform brightness compensation allocation adjustment on the unmarked areas, and generate a light-emitting regulation area; S4: Call the light-emitting regulation area, retrieve the voltage of the power supply line in each time period, calculate the fluctuation amplitude respectively, determine whether the amplitudes of consecutive multiple segments are all lower than the power supply stability reference threshold, then mark the time periods that meet the stable state as locked periods, pause the brightness output adjustment operation within the time periods, and generate a stable output interval; S5: Call the stable output interval, extract all the brightness output positions according to the freeze period time index, read the control levels and make a unified comparison, perform a rearrangement operation on the brightness change order, and generate a light-emitting control layout for energy-saving output according to the brightness sorting structure of the freeze interval.

[0019] The jump areas that require energy-saving intervention include the jump pixel distribution, the regional brightness fluctuation intensity, and the jump ratio threshold. The light-emitting combination area includes the brightness jump frequency difference set, the regional boundary combination relationship, and the unified regulation level. The light-emitting regulation area includes the continuously rising temperature area, the lower limit of the brightness output level, and the brightness compensation allocation ratio. The stable output interval includes the power supply voltage stable section, the brightness adjustment freeze mark, and the output pause control signal. The light-emitting control layout for energy-saving output includes the brightness control level sequence, the freeze period index mapping, and the energy-saving sorting structure.

[0020] Please refer to Figure 2 , and the acquisition steps of the jump areas that require energy-saving intervention are as follows: S101: Based on the brightness value change sequences of all pixels in the liquid crystal display panel in consecutive picture frames, obtain the per-pixel brightness differences between adjacent frames, identify the number of pixel points where all the brightness differences are greater than the jump standard, and generate a jump pixel number map; First, two consecutive frames of image data are extracted based on the frame buffer, recorded as frame t and frame t+1. The grayscale brightness value of each pixel is recorded in each frame, and the range is usually set between 0 and 255. For example, standard 8-bit grayscale encoding is used. Then, for each pixel, its brightness value in frame t and its brightness value in frame t+1 are extracted, and the pixel-by-pixel difference calculation is performed. For example, the brightness of pixel i in frame t is 85, and the brightness in frame t+1 is 102, then its brightness change is 17 units. In order to avoid directional interference, the absolute value of the brightness difference is taken, that is, the brightness difference of the pixel is 17. Then, the jump judgment standard value is set. The standard value is usually set to 10 based on the liquid crystal response sensitivity and the background brightness fluctuation. That is, if the brightness difference of the pixel is greater than 10 units, it is judged as a jump image. During the execution process, the above brightness difference calculation is performed on all pixels in the image and compared with the transition standard. If the transition condition is met, the corresponding position in the transition map is marked as 1, and if it is not met, it is marked as 0. Finally, a binary image matrix with the same resolution as the original image can be obtained to represent the transition distribution. For example, in a 1920×1080 resolution image, if the pixel coordinate position (500, 600) has a brightness of 90 in frame t and 105 in frame t+1, the brightness change is 15 units, which is greater than the standard 10. Therefore, this position is marked as 1 in the transition map. Assuming that 12784 pixels meet the transition condition after traversing all images, the total number of elements with a value of 1 in the transition map is 12784. The map provides pixel-level transition basic data for subsequent area recognition.

[0021] S102: Call the number of regional transition pixels in the transition pixel number map to obtain the total number of pixels in each region using the formula: ; Calculate the jump ratio in the area , according to the distribution and total amount relationship of the transition pixels after the brightness difference exceeds the transition standard, the regional transition ratio map is obtained; in, Representative The transition ratio of the region, Representative The total number of pixels in the region, and Respectively pixels in the frame and frame The brightness value in For the The jump standard corresponding to the pixels, is the jump determination result; This indicator is used to quantify the intensity of brightness mutation in a specific area in a video frame sequence and is the core parameter for determining whether an area needs energy-saving intervention; The calculation process of the regional jump ratio needs to be based on the jump pixel quantity map and the original image regional division. The entire image is divided into several regions according to a unified size. , each region contains pixels. Let , that is, a 60×60 pixel region. For each pixel within each region , calculate its jump state . If it satisfies , then , otherwise it is 0, and calculate its relative jump amplitude . Suppose there are 5 jump pixels identified in region , and their differences are 16, 14, 20, 12, 11 respectively, corresponding to frame brightnesses of 85, 92, 76, 101, 88 respectively, corresponding to frame brightnesses of 101, 106, 96, 113, 99. The jump standard is unified as , then the jump intensities are as follows: Pixel 1: ; Pixel 2: ; Pixel 3: ; Pixel 4: ; Pixel 5: ; Calculate the regional jump ratio for these jump pixels : ; This value indicates that there are very few pixels jumping in this region , and the jump ratio is 0.203%. Record this value in the regional jump ratio map. Executing this calculation process can complete the generation of the jump intensity distribution map for all image regions and construct a two-dimensional jump ratio map.

[0022] S103: According to the jump ratio of each region in the regional jump ratio map, judge it with the set jump ratio reference threshold, screen all regions with jump ratios higher than the threshold, obtain and mark the corresponding region coordinate positions and pixel compositions, and generate the jump regions that require energy-saving intervention; The identification of the jump region is based on the aforementioned region jump ratio map to perform a judgment operation. A jump ratio threshold needs to be set as a reference standard. For example, the threshold is set to 0.01, that is, when the jumping pixels account for 1% of the total number of pixels in the region, it is a jump region. Each region is compared one by one to see if its jump ratio is greater than or equal to this threshold. If it meets the condition, the region is identified as a jump region. During the operation, for each region, its jump ratio Rj is read, and it is judged whether the condition Rj≥0.01 is met. If it meets the condition, the spatial position coordinates and pixel range information of the region are extracted for labeling and output. For example, for the region with the region number (12, 8), its jump ratio is 0.016, which meets the condition. Then, record the upper left corner coordinate position as (720, 480), the width and height of the region are 60×60 pixels, and at the same time, its corresponding pixel set is retained as part of the output information for subsequent processing. After executing the complete process, a set of all regions that meet the jump condition and their precise coordinate position lists can be obtained, such as numbers (3, 5), (7, 9), (12, 8), etc. These regions are summarized and counted to form a jump region list, which will be used for energy consumption intervention analysis and control operations.

[0023] Please refer to Figure 3 , the steps for obtaining the light-emitting combination region are as follows: S201: Based on the jump region that requires energy-saving intervention, call the corresponding coordinate positions of the jump region, collect the number of brightness changes of pixels within a unit region among adjacent regions in consecutive frames, calculate the average value of the number of brightness changes of all pixels in each adjacent region, and obtain the adjacent region brightness change average value map; Based on the jump region that requires energy-saving intervention, first perform a jump detection operation on the continuous frame sequence of the image. By analyzing the degree of gray-scale change of the same pixel point between adjacent frames, calculate its absolute brightness difference. For example, the brightness value of the pixel at coordinates (120, 240) in frame 12 is 45, and the brightness at the same position in frame 13 is 220, so the brightness change is 175, which is much higher than the set jump determination threshold of 30. Therefore, it can be determined that the area where the pixel is located is a jump region, and a rectangular window with a size of 5×5 pixels is constructed centered on its coordinates, covering the range from (118, 238) to (122, 242). For each pixel in this area, collect the data of 10 consecutive frames of images, and judge the brightness difference between each frame and the previous frame. If the difference is greater than the set threshold, record the number of jumps once. For example, if the pixel (119, 241) has 5 changes that meet the conditions in these 10 frames of images, record its brightness change count as 5. Traverse the entire 5×5 area of 25 pixels in this way, and respectively count their change counts. If the obtained change count list is {5, 3, 2, 6, 4, 3, 2, 1, 4, 3, 5, 3, 4, 2, 3, 5, 2, 3, 4, 2, 3, 3, 4, 3, 2}, the total change count is accumulated to 82, and dividing it by the number of 25 pixels gives an average change value of 3.28, which is used as the brightness change benchmark for this jump region. Then, taking this jump region as a reference, extract multiple 5×5 neighborhood regions offset in its upper, lower, left, and right directions respectively, and use the same method to calculate the average brightness change value of each neighborhood. For example, the average value of the region (121, 243) is 2.6, and the region (118, 238) is 3.1. Finally, form a brightness change mean value map with the centers of adjacent regions as the base points, where each value represents the brightness change activity degree of the region, and is used for subsequent frequency difference analysis operations.

[0024] S202: According to the brightness change mean value map of adjacent regions, call the brightness change mean value of the corresponding jump region, and use the formula: ; Perform operations to obtain the brightness change frequency difference of adjacent regions , sort them in order according to the numerical size, and obtain the jump frequency difference sequence; Among them, represents the brightness change frequency difference of the th adjacent region, is the number of pixels in the th region, is the number of brightness changes of the pixel at position in the th adjacent region, is the number of brightness changes at the corresponding position in the jump region, is the variance of the pixel brightness jump, Represents the spatial position weight of the pixel; This feature quantifies the difference in the brightness change pattern between the target region and the adjacent regions through a spatial weight and variance compensation mechanism; After obtaining the mean spectrum of the brightness changes in the adjacent regions, the mean brightness change of the jump region is called as the reference benchmark, and the calculation of the difference in the brightness change frequency is performed for each adjacent region one by one, using the formula: ; The descriptions of the parameters are as follows: : The difference in the brightness change frequency between the th adjacent region and the jump region; : The number of pixels in this region (assuming a 5×5 region); : The number of brightness changes of the th pixel in the th region; : The number of brightness changes of the pixel at the corresponding position in the jump region; : The brightness jump variance of the th pixel; : The spatial position weight of this pixel.

[0025] An example of the calculation process is as follows: Suppose the five pixels of the first adjacent region have the following data respectively: The first pixel has 3 changes, the corresponding value in the jump region is 2, the change variance is 0.64, and the spatial weight is 0.6; the second pixel has 1 change, the corresponding value is 2, the variance is 0.36, and the weight is 0.5; the third pixel has 2 changes, the corresponding value is 2, the variance is 0.25, and the weight is 0.4; the fourth pixel has 4 changes, the corresponding value is 2, the variance is 0.81, and the weight is 0.7; the fifth pixel has 2 changes, the corresponding value is 3, the variance is 0.49, and the weight is 0.5. Substitute them into the formula one by one to calculate the difference term of each pixel: The difference term of pixel 1 is 1 plus 0.8 minus 0.072, getting 1.728; the difference term of pixel 2 is 1 plus 0.6 minus 0.05, getting 1.55; for pixel 3, it is 0 plus 0 minus 0.032, and the result is -0.032; for pixel 4, it is 2 plus 1.272 minus 0.098, and the result is 3.174; for pixel 5, it is 1 plus 0.7 minus 0.05, and the result is 1.65. Add up the values of these five pixels to get 8.07, and after averaging, the frequency difference of this adjacent region is 1.614.

[0026] S203: Based on the region with a higher ranking in the hopping frequency difference sequence, determine the spatial continuity of the boundary range and the corresponding hopping region. If there is a correlation, merge the boundary sets, and use the frequency difference for regulating the grading standard processing to generate a luminous combination region; After obtaining the sequence of luminance change frequency differences for all adjacent regions, sort these differences by their numerical magnitudes, and preferentially select several regions with smaller differences for spatial boundary analysis. Here, "smaller" is delimited by setting a specific interval range. For example, if the list of luminance frequency differences obtained from 15 regions is 1.614, 2.130, 3.025, 1.422, 2.878, 2.145, 1.982, 2.465, 2.320, 2.115, 1.991, 3.110, 2.876, 2.050, 1.840, first calculate the mean of this sequence, which is approximately 2.34, and the standard deviation is approximately 0.52. Set the judgment interval for "low difference" to be from 1.0 to 2.08. Thus, all regions falling within this interval are selected, such as 1.614, 1.422, 1.840, 1.982, 1.991. Then, compare the spatial positions of these regions with the boundaries of the hopping region one by one to determine whether their horizontal or vertical pixel distance is within 1, that is, whether they are adjacent or connected. For example, the pixel range of the hopping region boundary is (120 to 124, 240 to 244), and the center point coordinates of a certain candidate region are (124, 243), and its distance from the boundary point is 0 pixels. In the determination, it can be regarded as having spatial continuity, so merge this region into the original hopping region boundary set, and update the boundary range to the smallest circumscribed rectangle including the new region. Continue to judge that the corresponding frequency difference value is 1.422, calculate its influence weight as 1 divided by 1 plus this value, which is approximately equal to 0.413, and record this weight for the next region grading. Starting from this region, combine the continuously connected regions to form a luminance combination region, and finally achieve a group of connected image sub-regions after boundary merging.

[0027] Please refer to Figure 4 , and the steps for obtaining the light emission regulation region are as follows: S301: Based on the luminous combination region, collect the temperature change records of the luminous parts in the region at multiple consecutive moments, calculate the differences based on the temperature values at adjacent moments, obtain the total temperature change of the luminous parts within a continuous time period, and get the region temperature change amount sequence; First, several representative monitoring points need to be selected in the light-emitting display module. For example, in an LED array composed of 8×8 pixels, the pixels in the central column and the edge columns are selected as monitoring points respectively, corresponding to the central point P1 and the edge point P2. These points are periodically temperature-measured by the embedded infrared thermal sensor module. Under the set condition that the time interval is 1 second, the data of 5 time nodes are continuously recorded. Assuming that the temperature of P1 is 32.0°C in the initial frame (the 0th frame), and the temperatures of the subsequent 5 frames are 30.8°C, 31.3°C, 32.1°C, 31.8°C, and 33.0°C respectively, then the temperature change sequence is obtained as: -1.2°C, +0.5°C, +0.8°C, -0.3°C, +1.2°C. Similarly, for P2, assuming its initial temperature is 30.5°C and the temperatures of the subsequent frames are 31.0°C, 31.5°C, 31.2°C, 31.0°C, and 32.0°C, then the temperature change sequence is: +0.5°C, +0.5°C, -0.3°C, -0.2°C, +1.0°C. The change amount of each frame is extracted item by item and recorded in order to form the temperature change amount sequence of the corresponding area. For example, the sequence of point P1 is [-1.2, 0.5, 0.8, -0.3, 1.2]. This sequence represents the dynamic change process of the temperature of this point within a 5-second time window. The system will complete the subsequent brightness adjustment judgment based on the temperature change under the time difference calculated for each frame. All temperature change values are converted into digital signals through thermoelectric voltage and collected and stored in the buffer data area. At the same time, unified processing is carried out in terms of area dimension, and the complete temperature change amount sequence within the combined area is integrated and prepared for the dynamic adjustment input of the brightness output level.

[0028] S302: Call the regional temperature change amount sequence, identify the regions where the total temperature change is positive within a continuous time period in each region, and use the formula: ; Calculate to obtain the output level after brightness correction , compare the adjustment value with the lower limit of the combined level, and set the output level according to the judgment result to generate the brightness level adjustment sequence; Among them, is the brightness output level after adjustment of the th region, is the total number of frames in the continuous time period in the th region, is the temperature change amount of the th region at time , is the pixel thermal response factor corresponding to the temperature change, is the edge brightness difference value of the th region, is the lower limit brightness value of the combined level; This parameter dynamically adjusts the display brightness through a thermodynamic feedback mechanism, integrating optical characteristics and thermodynamic response. When it detects a continuous increase in the regional temperature, it automatically reduces the brightness output to achieve energy-saving regulation, while maintaining visual consistency through edge brightness difference compensation. Call the sequence of regional temperature change amounts, identify the regions where the total temperature change is positive within a continuous time period in each region, and calculate the adjustment value of the brightness output level accordingly. Let the current region number be q and the total number of frames be , and the temperature change sequence of each frame in this region is , and the corresponding pixel thermal response factor is . This factor is measured by coupling the sensor with the pixel unit, and its unit is normalized to dimensionless, representing the thermal response degree corresponding to unit temperature change; the regional edge brightness difference , measured by the brightness difference between the periphery and the center of the region, and the combined level lower limit brightness is . Substitute the above parameters into the formula: ; First step, calculate the weighted sum of temperature change amounts: ; ; ; ; ; Sum up to get: ; Then take the square root: ; Second step, calculate the sum of the total temperature changes: ; Third step, calculate the correction term: ; Substitute the above results into the formula: ; Therefore, the adjusted brightness output level of this region is 101.846. If the combined level lower limit is 100, it means that the temperature in this region has been continuously rising during this time period, and the corresponding brightness level is adjusted up to 101.846.

[0029] S303: Identify the unmarked regions according to the adjusted region status in the brightness level adjustment sequence, perform mean comparison according to the adjacent brightness difference, and perform difference allocation compensation with reference to the combined level boundary to establish a light-emitting regulation region. First, traverse the neighborhood brightness level status of each unrecognized area. If a brightness level has not been assigned to a certain area number, the system retrieves the areas with assigned values in its four neighboring directions and extracts their brightness output levels. For example, if the areas to the left, right, above, and below this area are 100.5, 101.2, 103.0, and 98.5 respectively, then calculate the average brightness value using these four values as , temporarily assign this average value to the currently unmarked area as its predicted brightness level, and then judge the difference between this predicted value and the combined level boundary value. Here, the difference is , which is less than the set judgment threshold of 1 cd / m², so no further brightness compensation is performed for the time being. If the difference is greater than the set threshold, such as there are neighborhood values of 105.5 and 96.0, then the average difference is 9.5. At this time, the system automatically discriminates the brightness difference, classifies the neighborhood values with differences greater than 4 cd / m² separately, and then independently performs brightness compensation allocation. For example, set the brightness mutation interval not to exceed ±2.5 cd / m². If the current predicted value exceeds this range, then perform local weighting according to the neighborhood brightness near the boundary, and use weighting coefficients of 0.6 and 0.4 to reconstruct and calculate the upper and lower or left and right neighborhoods. Finally, obtain a relatively smooth brightness level. For example, after assigning weights of 0.6 and 0.4 to 105.5 and 96.0 respectively, calculate as , assign this value to the unmarked area as its final brightness level, and mark it as the completed adjustment status in the system. This process is sequentially executed on all unrecognized areas to ensure brightness continuity between areas and local light sense consistency, thereby completing the construction of the light-emitting regulation area.

[0030] Please refer to Figure 5 , and the steps to obtain the stable output interval are as follows: S401: Based on the light-emitting regulation area, call the voltage supply line data corresponding to the area, extract the voltage values within each power supply cycle according to the time period, and divide them into multiple equally spaced time periods in chronological order to obtain the continuous voltage value sequence within each time period, and obtain the voltage interval sequence; Based on the light emission control region, in practical applications, the power supply channel corresponding to the control region can be determined through hardware configuration. For example, in a factory workshop, there are 12 groups of LED light strips distributed. The system configures an independent voltage power supply channel for each group of light strips and binds it to a number. During the data acquisition process, first call the voltage data of channel 1. A section of data currently recorded in this channel is [219.8, 220.0, 219.9, 220.1, 219.7, 219.8]. Taking every 6 data values as a power supply cycle, the sampling points in this cycle are arranged in sequence to form a voltage sequence. This sequence can be directly used for subsequent voltage fluctuation extraction. If the system also needs to process the data of other channels, then extract the corresponding data from channel 2 to channel 12 in sequence to form a set of multiple voltage sequences of equal length. Each group of data represents the current voltage power supply change situation of the corresponding control region. For example, if the acquisition result of channel 2 is [220.2, 220.1, 220.3, 220.4, 220.2, 220.0], then the voltage sequences corresponding to the two control regions are established respectively to form an overall voltage data set. These data will be used for the next voltage fluctuation calculation operation.

[0031] S402: According to the voltage interval sequence, extract the difference between the voltage values at two consecutive time points within the time period, calculate the set of absolute values of all differences within the sequence, and construct a set of voltage fluctuation amplitudes within each time period. Call the power supply stability reference threshold, calculate the mean value of the set of voltage fluctuation amplitudes for each time period, and compare it with the reference threshold to obtain the voltage fluctuation comparison value for the time period; The above voltage sequences are processed separately by region to extract the difference magnitude between any two adjacent voltage values in each sequence. The specific operation is as follows: For the first set of data [219.8, 220.0, 219.9, 220.1, 219.7, 219.8], calculate the absolute value of the difference between each adjacent pair of values, which are 0.2, 0.1, 0.2, 0.4, 0.1 respectively, to form a difference set [0.2, 0.1, 0.2, 0.4, 0.1]. Subsequently, calculate the average value of this set, that is, accumulate all the differences to get 1.0, and then divide by 5 to obtain a fluctuation average value of 0.2. This average value is the voltage fluctuation amplitude index for the current power supply cycle in this region. For the second set of data [220.2, 220.1, 220.3, 220.4, 220.2, 220.0], the difference set is 0.1, 0.2, 0.1, 0.2, 0.2, and the average value is 0.16. And so on, perform the above processing on all channel data. Each set of data forms a set of fluctuation amplitude average values, and then compare them with the voltage fluctuation reference threshold. The reference threshold is set to 0.25V. This value is based on the long-term sampling statistics results of the power supply line under normal working conditions in the laboratory. After statistically analyzing 100 sets of sample voltage sequences, it is found that the voltage fluctuation average values of most samples are concentrated between 0.18 and 0.23. Therefore, a reasonable threshold is set to 0.25, slightly higher than the 95% confidence range, to ensure stable recognition ability for fluctuation judgment.

[0032] S403: According to the voltage fluctuation comparison value in the time period, determine whether the voltage fluctuations in multiple consecutive time periods are lower than the power supply stability reference threshold. If the condition is met, mark the time period sequence as the stable state, and on this basis, suspend the brightness output adjustment operation for the stable state time period to obtain the stable output interval; Compare the fluctuation average values of the power supply cycles of all regulation regions with the 0.25V threshold. If the voltage fluctuation average value of a certain region is lower than this threshold in multiple power supply cycles, then this region is determined to be in a power supply stable state. For example, the five sets of fluctuation average values of channel 1 are 0.2, 0.22, 0.21, 0.18, 0.23 in sequence, all of which are less than 0.25, and it is determined to be a stable channel; if the five sets of fluctuation average values of channel 2 are 0.16, 0.17, 0.26, 0.15, 0.18, then due to the third set of data being higher than the threshold, the continuity is interrupted, and it can only be recognized as two stable sections, that is, the first section is 0.16, 0.17, and the second section is 0.15, 0.18; for the stable sections, the system does not perform brightness output adjustment during this time, keeps the current LED emission level unchanged, that is, suspends the PWM control module from refreshing the dimming parameters, to avoid generating invalid adjustment actions in the stable state, thereby forming a stable output interval. The system records this state and updates it to the control center to indicate whether the current output state of each channel is in an adjustable state.

[0033] Please refer toFigure 6 The steps for obtaining the luminous control layout with energy-saving output are as follows: S501: Based on the stable output interval, extract all the luminance output positions within the time period according to the freeze cycle time index, and establish a luminance control set in the order of the time index to obtain the luminance position set; Based on the stable output interval, after the system detects that the output control state is frozen, it immediately performs a data backtracking extraction operation based on the frozen luminance output index. The extraction process is sequentially matched according to the control channel number. The system finds the corresponding luminance output position index sequence in the record structure as 9, 3, 7, 1, 4, 2, 6, 5, 8. Each index corresponds to an independent luminous output unit. The controller sequentially reads the luminance values corresponding to the numbered positions. The read data are 155, 130, 175, 120, 140, 125, 165, 135, 180, with the unit of cd / m². The system reorganizes these 9 luminance values into a luminance position set in the original index order. The set form is [155, 130, 175, 120, 140, 125, 165, 135, 180]. Each luminance value is regarded as the current stable luminance setting of a certain output position. After reading, the system immediately performs an outlier test operation to determine whether the luminance value is within the set working range of 100 to 200. All values meet the standard range, so all are retained for subsequent processing. Subsequently, the system generates a luminance control set cache and binds the current luminance level to each output position based on this set, providing data support for subsequent sorting and layout rearrangement.

[0034] S502: According to the luminance position set, read the corresponding luminance control levels of the positions, and perform a unified comparison of all control levels in the same dimension, and arrange them in the order of the luminance numerical values to obtain the luminance control level order; After obtaining the set of brightness positions, the system performs a brightness level conversion operation on each brightness value in the set. The brightness level conversion method is to divide each brightness value by 10 and round down. The converted control level set is 15, 13, 17, 12, 14, 12, 16, 13, 18 in sequence. Among them, the brightness value 155 is converted to level 15, 130 to 13, 175 to 17, 120 to 12, 140 to 14, 125 to 12, 165 to 16, 135 to 13, 180 to 18. Subsequently, the system performs a unified comparison operation on the converted control level set. The comparison rule is to sort in ascending order according to the numerical size. Before performing the sorting, the original set arrangement order is [15, 13, 17, 12, 14, 12, 16, 13, 18]. The system starts from the first item of the set and judges the size with the next item one by one. When it is judged that the previous item is greater than the next item, the two items are swapped until the whole set conforms to the ascending arrangement rule. After the sorting is completed, the new level sequence [12, 12, 13, 13, 14, 15, 16, 17, 18] is obtained. The system records the corresponding relationship between the sorted level values and the original brightness positions. Through mapping, it is found that level 12 appears at brightness 120 and 125, level 13 corresponds to 130 and 135, level 14 corresponds to 140, level 15 corresponds to 155, level 16 corresponds to 165, level 17 corresponds to 175, and level 18 corresponds to 180. After the system finishes recording, it writes all the data into the internal structure mapping buffer of the controller to prepare the position mapping path for the subsequent structure rearrangement.

[0035] S503: According to the brightness control level order, perform a rearrangement operation on the brightness change sequence, adjust the sorting order and map it to the corresponding light-emitting output structure position, and form a continuous sorting structure on this basis to obtain the light-emitting control layout of the energy-saving output; After completing the sorting of control levels and the corresponding position mapping, the system uses the sorting result as the benchmark for the output order, and assigns the brightness levels from the lowest to the highest to the sequential positions of the output structure in turn. The rearrangement rule is that the 1st position after sorting is assigned to the 1st position of the structure, the 2nd position is assigned to the 2nd position of the structure, and so on until the 9th position is assigned to the 9th position of the structure. In the specific execution process, the system first confirms that the sorted levels are 12, 12, 13, 13, 14, 15, 16, 17, 18 in turn, the original brightness values are 120, 125, 130, 135, 140, 155, 165, 175, 180, and the original structure positions are numbered 4, 6, 2, 8, 5, 1, 7, 3, 9 respectively. Now, adjust the control structure in the above order as 4→position 1, 6→position 2, 2→position 3, 8→position 4, 5→position 5, 1→position 6, 7→position 7, 3→position 8, 9→position 9. After completing the position rearrangement, the system writes the new brightness control level sequence into the control channel, and synchronously adjusts the corresponding PWM duty cycle control signal. All light-emitting output units execute the new brightness level control value after the structure adjustment, so as to complete the reconstruction output of the light-emitting control layout. The system no longer performs brightness cascading based on the original index structure, but distributes in the order of increasing energy consumption from small to large, meeting the requirement of the minimum brightness gradient dispersion of the layout.

[0036] A liquid crystal display energy-saving control system, comprising: The jump detection module obtains the brightness sequences of all pixels in consecutive frames of the liquid crystal panel, calculates the brightness difference between adjacent frames and compares it with the jump standard value, counts the number of pixels with excessive jump times, classifies them by region and calculates the jump ratio, compares with the reference ratio to screen out the numbers and coordinates of the excessive regions, and generates the jump regions that require energy-saving intervention; The region integration module calls the jump regions that require energy-saving intervention, reads the average value of the brightness change times of the surrounding adjacent regions, calculates the difference from the marked regions and sorts them, selects the top four regions to perform boundary merging, and unifies the brightness change interval levels to generate the light-emitting combined regions; The temperature monitoring module calls the light-emitting combined regions, extracts the temperature records in consecutive time periods, calculates the difference between adjacent segments and judges the positive change regions, adjusts their brightness to the lower limit of the combined level, and compensates and adjusts the brightness of other regions according to the current brightness to generate the light-emitting regulation regions; The voltage determination module calls the light-emitting regulation regions, obtains the voltage values of each time period of their power supply lines, calculates the jump difference and compares it with the stable reference value, screens out the numbers of consecutive time periods that meet the conditions as the locked periods, pauses the brightness adjustment during the pause period, and generates the stable output intervals; The output layout module calls the stable output intervals, extracts the brightness positions and control levels, sorts the brightness levels and then establishes the output order structure, maps the order to the regional control positions to complete the brightness rearrangement, and generates the light-emitting control layout for energy-saving output.

[0037] The above are only the preferred embodiments of the present invention, and do not limit the present invention in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A liquid crystal display energy-saving control method, characterized in that It includes the following steps: S1: Obtain the number of brightness changes of the pixels of the liquid crystal display panel in consecutive frames, count the number of pixels with brightness changes exceeding the jump standard in a single area, calculate the jump ratio. If it is higher than the set threshold, record the area as a jump area that requires energy-saving intervention; S2: Based on the jump area that requires energy-saving intervention, read the average number of brightness changes in adjacent areas, calculate and sort the jump frequency differences, merge the boundaries, and unify the brightness regulation levels to generate a light-emitting combination area; S3: Read the temperature changes of the light-emitting parts in the light-emitting combination area, calculate the temperature change amount in a continuous time period and sort it, identify the continuously heating area, adjust the brightness to the lower limit of the combination level, and perform brightness compensation to generate a light-emitting regulation area; S4: Retrieve the voltage of the power supply line where the light-emitting regulation area is located, calculate the period jump amplitude. If it is continuously lower than the stable threshold, mark it as a locked period, and suspend the brightness adjustment during this period to generate a stable output interval; S5: Extract the brightness output positions according to the stable output interval, unify the control levels and then sort them, and rearrange them according to the brightness structure of the frozen interval to generate a light-emitting control layout for energy-saving output.

2. The liquid crystal display energy-saving control method according to claim 1, wherein The jump area that requires energy-saving intervention includes the jump pixel distribution, the regional brightness fluctuation intensity, and the jump ratio threshold. The light-emitting combination area includes the set of jump frequency differences of brightness, the regional boundary combination relationship, and the unified regulation level. The light-emitting regulation area includes the continuously heating area, the lower limit of the brightness output level, and the brightness compensation distribution ratio. The stable output interval includes the stable section of the power supply voltage, the brightness adjustment freeze mark, and the output pause control signal. The light-emitting control layout for energy-saving output includes the brightness control level sequence, the frozen period index mapping, and the energy-saving sorting structure.

3. The liquid crystal display energy-saving control method according to claim 2, wherein The obtaining steps of the jump area that requires energy-saving intervention are as follows: S101: Based on the brightness value change sequence of all pixels in the liquid crystal display panel in consecutive picture frames, obtain the pixel-by-pixel brightness difference between adjacent frames, identify the number of pixel points with all brightness differences greater than the jump standard, and generate a jump pixel number map; S102: Call the number of jump pixels in the area in the jump pixel number map, obtain the total number of pixels in each area, and use the formula: ； Obtain the jump ratio within the operation acquisition area , and obtain the regional jump ratio map according to the relationship between the distribution and total amount of jump pixels after the brightness difference exceeds the jump standard; Among them, represents the jump ratio of the region, represents the total number of pixels in the region, and are respectively the brightness values of the th pixel in frame and frame , is the jump standard corresponding to the th pixel, is the jump determination result; S103: According to the jump ratio of each area in the area jump ratio map, judge it with the set jump ratio reference threshold, screen all areas with jump ratios higher than the threshold, obtain and mark the corresponding area coordinate positions and pixel compositions, and generate a jump area that requires energy-saving intervention.

4. The energy-saving control method for liquid crystal display according to claim 3, wherein The obtaining steps of the light-emitting combination area are as follows: S201: Based on the jump area that requires energy-saving intervention, call the corresponding coordinate positions of the jump area, collect the number of brightness changes of the pixels in the unit area between consecutive frames in the surrounding adjacent areas, and calculate the average value of the brightness changes of all pixels in each adjacent area to obtain an adjacent area brightness change mean map; S202: According to the adjacent area brightness change mean map, call the brightness change mean value of the corresponding jump area, and use the formula: ； Obtain the difference in the frequency of brightness changes in adjacent regions through calculation , sort them in order according to the numerical size to obtain a sequence of hopping frequency differences; Among them, represents the difference in the frequency of brightness changes between the th adjacent regions, is the number of pixels in the th region, is the number of times the pixel brightness changes at the position in the th adjacent region, is the number of times the brightness changes at the corresponding position in the jump region, is the variance of the pixel brightness jump, represents the spatial position weight of the pixel; S203: Based on the region with a higher ranking in the frequency hopping difference sequence, determine the spatial continuity of the boundary range and the corresponding hopping region. If there is a correlation, merge the boundary sets, and use the frequency difference for regulating the grading standard processing to generate a light-emitting combination region.

5. The energy-saving control method for liquid crystal display according to claim 4, characterized in that, The steps for obtaining the light-emitting regulation region are as follows: S301: Based on the light-emitting combination region, collect the temperature change records of the light-emitting parts in the region at multiple consecutive moments. Calculate the difference based on the temperature values at adjacent moments to obtain the total temperature change of the light-emitting parts within a continuous time period, and obtain a sequence of regional temperature change amounts. S302: Invoke the sequence of regional temperature change amounts to identify the regions where the total temperature change within a continuous time period in each region is positive, and use the formula: ； Obtain the output level after brightness correction through calculation , compare the adjustment value with the lower limit of the combined level, set the output level according to the judgment result, and generate a brightness level adjustment sequence; Among them, is the brightness output level after the area adjustment, is the total number of frames in the continuous time period in the area, is the temperature change amount of the area at the time moment, is the pixel thermal response factor corresponding to the temperature change, is the edge brightness difference value of the area, is the lower limit brightness value of the combination level; S303: According to the adjusted region status in the brightness level adjustment sequence, identify the unmarked regions, compare the means according to the adjacent brightness differences, and perform difference distribution compensation with reference to the combined level boundary to establish a light-emitting regulation region.

6. The liquid crystal display energy-saving control method according to claim 5, characterized in that, The steps for obtaining the stable output interval are as follows: S401: Based on the light-emitting regulation region, invoke the voltage supply line data corresponding to the region, extract the voltage values within each power supply cycle by time period, and divide them into multiple equally spaced time periods in chronological order to obtain a sequence of continuous voltage values within each time period, and obtain a voltage interval sequence. S402: According to the voltage interval sequence, extract the differences between the voltage values at two consecutive time points within the time period, calculate the set of absolute values of all differences in the sequence, and construct a set of voltage fluctuation amplitudes within each time period. Invoke the power supply stability reference threshold, calculate the mean value of the set of voltage fluctuation amplitudes for each time period, and compare it with the reference threshold to obtain the voltage fluctuation comparison value for the time period. S403: According to the voltage fluctuation comparison value for the time period, determine whether the voltage fluctuations in multiple consecutive time periods are lower than the power supply stability reference threshold. If the condition is met, mark the time period sequence as a stable state, and on this basis, suspend the brightness output adjustment operation for the stable state time period to obtain a stable output interval.

7. The energy-saving control method for liquid crystal display according to claim 6, characterized in that, The steps for obtaining the energy-saving output light-emitting control layout are as follows: S501: Based on the stable output interval, extract all the brightness output positions within the time period according to the freeze cycle time index, and establish a brightness control set in the order of the time index to obtain a brightness position set. S502: According to the brightness position set, read the corresponding brightness control levels, and perform a unified comparison of all control levels in the same dimension, and arrange them in the order of brightness values to obtain the order of brightness control levels. S503: According to the order of brightness control levels, perform a rearrangement operation on the brightness change sequence, adjust the sorting order and map it to the corresponding light-emitting output structure positions to form a continuous sorting structure, and obtain the energy-saving output light-emitting control layout.

8. An energy-saving control system for liquid crystal displays, characterized in that, The system is used to execute the liquid crystal display energy-saving control method according to any one of claims 1-7, including: The jump detection module obtains the brightness sequences of all pixels in the liquid crystal panel for consecutive frames, calculates the brightness difference between adjacent frames and compares it with the jump standard value, counts the number of pixels with the number of jumps exceeding the limit, classifies them by region and calculates the jump ratio, compares with the reference ratio to screen out the numbers and coordinates of the regions with the limit exceeded, and generates the jump regions that require energy-saving intervention; The region integration module calls the jump regions that require energy-saving intervention, reads the average value of the number of brightness changes in the adjacent regions around, calculates the difference from the marked region and sorts them, selects the top four regions to perform boundary merging, and unifies the brightness change interval levels to generate the combined light-emitting regions; The temperature monitoring module calls the combined light-emitting regions, extracts the temperature records for consecutive time periods, calculates the difference between adjacent segments and determines the regions with positive changes, adjusts their brightness to the lower limit of the combined level, and compensates and adjusts the brightness of other regions according to the current brightness to generate the light-emitting regulation regions; The voltage determination module calls the light-emitting regulation regions, obtains the voltage values of each time period of their power supply lines, calculates the jump difference and compares it with the stable reference value, screens out the numbers of consecutive time periods that meet the conditions as the locked periods, pauses the brightness adjustment during the pause periods, and generates the stable output intervals; The output layout module calls the stable output intervals, extracts the brightness positions and control levels, sorts the brightness levels and then establishes the output sequence structure, maps the sequence to the region control positions to complete the brightness rearrangement, and generates the light-emitting control layout for energy-saving output.

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