Method for stably adjusting light source brightness of dimming display panel

Abstract

The invention provides a light source brightness stable adjustment method for a dimming display panel, and relates to the technical field of display, and the method comprises the steps: monitoring the ambient light intensity of the dimming display panel in real time, and obtaining first ambient light intensity; analyzing the first ambient light intensity, and predicting and analyzing future ambient light intensity and brightness preference to obtain an ideal brightness difference result; adjusting the light source brightness of the dimming display panel according to the ideal brightness difference result; and monitoring the light source brightness adjustment condition of the dimming display panel in the adjustment process in real time and performing feedback adjustment. The method comprises the following steps: analyzing first ambient light intensity obtained by monitoring ambient light intensity of a dimming display panel in real time, and predicting and analyzing ambient light intensity and brightness preference at a future moment to obtain an ideal brightness difference result; the light source brightness of the current dimming display panel is adjusted according to the ideal brightness difference result, the adjusting process and corresponding feedback adjustment are monitored in real time, intelligent adjustment of the light source brightness of the display panel can be achieved, and the display effect is improved.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a method for stably adjusting the brightness of a light source of a dimming display panel. Background Art

[0002] In recent years, with the continuous development of display technology, dimming display panels have become increasingly widely used in various electronic devices. However, in actual use, due to fluctuations in ambient light intensity and different user brightness preferences, traditional manual or simple automatic adjustment methods often cannot meet the user's display brightness requirements in real time, resulting in unstable display effects and even causing visual fatigue. Therefore, how to intelligently adjust the brightness of the display panel light source to achieve stable brightness adjustment and comfortable display has become a major research focus.

[0003] Therefore, the present invention provides a method for stably adjusting the brightness of a light source of a dimming display panel. Summary of the Invention

[0004] The present invention provides a method for stably adjusting the brightness of the light source of a dimming display panel, which is used to obtain a first ambient light intensity by analyzing the ambient light intensity of the dimming display panel in real time, predict and analyze the ambient light intensity and brightness preference at future moments to obtain an ideal brightness difference result; adjust the brightness of the light source of the current dimming display panel according to the ideal brightness difference result, and monitor the adjustment process and corresponding feedback adjustment in real time, so as to realize intelligent adjustment of the brightness of the light source of the display panel and improve the display effect.

[0005] The present invention provides a method for stably adjusting the brightness of a light source of a dimming display panel, comprising: Step 1: Using a preset light sensor to monitor the ambient light intensity of the dimming display panel in real time to obtain a first ambient light intensity; Step 2: Analyze the first ambient light intensity, predict and analyze the ambient light intensity and brightness preference at future moments, and obtain an ideal brightness difference result; Step 3: adjusting the brightness of the light source of the current dimming display panel according to the ideal brightness difference result; Step 4: During the adjustment process, the brightness adjustment of the light source of the current dimming display panel is monitored in real time, and feedback adjustment is performed.

[0006] Preferably, analyzing the first ambient light intensity, predicting and analyzing the ambient light intensity and brightness preference at a future moment, and obtaining an ideal brightness difference result includes: Inputting the first ambient light intensity into a pre-established ambient prediction model to obtain a predicted ambient light intensity result at a future moment; The predicted future time and the predicted environmental light intensity results are used as input, input into the pre-established brightness preference analysis model, and the brightness preference results are output; If the real-time brightness of all the current dimming display panel light sources is consistent with the ideal brightness value of the corresponding light source in the brightness preference result, it is determined that the brightness of the light source of the current dimming display panel does not need to be adjusted; If the real-time brightness of the dimming display panel light source is inconsistent with the ideal brightness value of the corresponding light source in the brightness preference result, the corresponding dimming display panel light source is marked as the first light source; subtracting the ideal brightness value of the corresponding light source in the brightness preference result from the real-time brightness of the first light source to obtain a first brightness difference; The first light source in the current dimming display panel and the corresponding first brightness difference are output as an ideal brightness difference result.

[0007] Preferably, adjusting the brightness of the light source of the current dimming display panel according to the ideal brightness difference result includes: Obtain a list of preset available adjustment devices for the dimming display panel at the current moment; Performing light source adjustment device matching on the first light source in the ideal brightness difference result and a preset list of available adjustment devices to obtain an adjustment device matching result; According to the matching result of the adjustment device, the first light source whose adjustment device is successfully matched and whose first brightness difference falls within the adjustment gear range is marked as a first matching light source, and the first light source whose adjustment device is successfully matched but whose first brightness difference does not fall within the adjustment gear range is marked as a second matching light source; Calculate the ratio of the number of first matching light sources to the available number of adjustment devices to obtain a first matching ratio; If the first matching ratio is less than the dynamic matching ratio, the brightness of the first matching light source is adjusted according to the first brightness difference using the adjustment device that successfully matches the first matching light source; if a second matching light source exists, the current second matching light source is marked as a special light source; If the first matching ratio is not less than the dynamic matching ratio, the expected number of matches is obtained; Sort the current first matching light sources in ascending order according to the first brightness difference to obtain a first matching list; The first matching light sources of the first expected matching number in the first matching list are regarded as selected light sources, and the brightness is adjusted according to the first brightness difference using the adjustment device corresponding to the selected light source that has successfully matched; The remaining first matching light sources except the selected light source in the first matching list are regarded as special light sources; if a second matching light source exists, the current second matching light source is marked as a special light source; and the brightness of the special light source is adjusted.

[0008] Preferably, it also includes: Obtain device history usage records of all regulating devices in a preset available regulating device list from a preset circuit component database; Extracting historical associated life parameter data from the historical usage records of the equipment, inputting the data into a pre-established life prediction model to perform life prediction on all regulating devices in a preset available regulating device list to obtain a first predicted life; Performing a weighted average calculation on the first predicted lifespan of all regulating devices in the preset available regulating device list and the corresponding historical maintenance frequencies to obtain a key availability coefficient of the corresponding regulating device; Mark the regulating devices in the preset available regulating device list whose key availability coefficient is greater than the set availability threshold as applicable regulating devices; Based on a comprehensive analysis of the number of applicable regulating devices and the available number of regulating devices, the dynamic matching ratio at the current moment is obtained.

[0009] Preferably, the calculation formula for the dynamic matching ratio is as follows: Where, Expressed as the dynamic matching ratio; It is expressed as the number of currently applicable regulating devices; It is expressed as the current available number of regulating devices; It represents the total number of adjustment devices in the dimming display panel; e is a constant with a value of 2.7.

[0010] Preferably, adjusting the brightness of the special light source includes: Extracting the first brightness difference of the current special light source from the ideal brightness difference result as a matching condition, and obtaining an initial duty cycle variable by matching from a preset lookup table; Using the initial duty cycle variable, adding it to the real-time duty cycle of the current special light source to obtain a first duty cycle; Expanding the ideal brightness value of the special light source to obtain a first reference brightness range; Obtaining historical brightness records of the special light source whose historical light source brightness falls within a first reference brightness range, and extracting corresponding historical duty cycles therefrom as reference duty cycles, with the historical light source brightness being the reference light source brightness; Calculating a parameter duty cycle difference between a reference duty cycle and a current first duty cycle; Calculate the reference brightness difference between the reference light source brightness and the ideal brightness value of the light source; With the reference brightness difference as the independent variable and the parameter duty cycle difference as the dependent variable, the reference brightness-duty cycle difference curve of each special light source is constructed in time sequence; The reference brightness-duty cycle difference curve is divided according to the vertical axis, and the curve portion to the left of the vertical axis is marked as the first reference curve, and the curve portion to the left of the vertical axis is marked as the second reference curve; The brightness of the historical light source closest to the current moment with the smallest difference from the ideal brightness value of the current special light source is marked as the reference brightness value, and the corresponding historical duty cycle is marked as the reference duty cycle; Calculating a target duty cycle based on a combined analysis of the first reference curve, the second reference curve, the reference brightness, and the reference duty cycle; The calculation formula for the target duty cycle is as follows: Where, It is expressed as the target duty cycle of the current special light source; It represents the first duty cycle of the current special light source; It is expressed as the base duty cycle of the current special light source; It is expressed as the reference brightness value of the current special light source; It is expressed as the ideal brightness value of the current special light source; It is expressed as the absolute difference between the time when the reference brightness value of the current special light source is obtained and the current time; It is expressed as the influence weight of time difference on the calculation of current duty cycle using historical duty cycle; The slope of the second reference curve is expressed as: The slope of the first reference curve is represented as follows; is expressed as the curve area of ​​the second reference curve; is expressed as the curve area of ​​the first reference curve; Expressed as the weight of the impact of historical brightness-duty cycle nonlinear changes on the calculation of the current duty cycle; Based on the first brightness difference of the current special light source, a pre-established dimming-related parameter adjustment model is input to obtain adjusted related parameters; Combining the currently acquired target duty cycle with the adjusted related parameters to generate an adjustment instruction, which is sent to the control system of the current special light source; The control system generates an adjustment time-brightness list and an adjustment time-duty cycle list according to the received adjustment instruction; According to the adjustment time-duty cycle list, the duty cycle of the current special light source is gradually adjusted until the target duty cycle is reached, so as to adjust the brightness of the current special light source to the ideal brightness value of the corresponding light source.

[0011] Preferably, the dimming-related parameters refer to the adjustment frequency and the adjustment step size.

[0012] Preferably, real-time monitoring of the brightness adjustment of the light source of the current dimming display panel during the adjustment process and performing feedback adjustment include: Step 11: Using a set light sensor to monitor the monitored brightness value of the special light source at the current adjustment time in real time, and compare it with the brightness value at the same time in the adjustment time-brightness list to obtain a first comparison value; Step 12: When the absolute value of the first comparison value is not greater than the set comparison threshold, continue adjusting the duty cycle at the next adjustment moment; Step 13: When the absolute value of the first comparison value is greater than the set comparison threshold, determining the duty cycle adjustment direction and the duty cycle adjustment amount according to the first comparison value and the current adjustment step size; Step 14: fine-tuning the target duty cycle based on the duty cycle adjustment direction and the duty cycle adjustment amount to obtain an adjusted target duty cycle; Step 15: Combining the currently acquired adjusted target duty cycle and the adjusted related parameters to regenerate an adjustment instruction and send it to the control system of the special light source; The control system regenerates the adjustment time-brightness list and the adjustment time-duty cycle list according to the received adjustment instruction; Step 16: gradually adjusting the duty cycle of the current special light source according to the adjustment time-duty cycle list; Step 17: Repeat steps 11-16 until the duty cycle of the current special light source is adjusted to the target duty cycle, and the corresponding brightness is adjusted to the ideal brightness value of the corresponding light source.

[0013] Compared with the prior art, the present invention has the following advantages: By analyzing the first ambient light intensity obtained by real-time monitoring of the ambient light intensity of the dimming display panel, the ambient light intensity and brightness preference at future moments are predicted and analyzed to obtain the ideal brightness difference result; the light source brightness of the current dimming display panel is adjusted according to the ideal brightness difference result, and the adjustment process and corresponding feedback adjustment are monitored in real time, which can realize intelligent adjustment of the light source brightness of the display panel and improve the display effect.

[0014] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0015] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 Flowchart of a method for stably adjusting the brightness of a light source of a dimming display panel according to an embodiment of the present invention. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0018] The embodiment of the present invention provides a method for stably adjusting the brightness of a light source of a dimming display panel. Figure 1 As shown, including: Step 1: Using a preset light sensor to monitor the ambient light intensity of the dimming display panel in real time to obtain a first ambient light intensity; Step 2: Analyze the first ambient light intensity, predict and analyze the ambient light intensity and brightness preference at future moments, and obtain an ideal brightness difference result; Step 3: adjusting the brightness of the light source of the current dimming display panel according to the ideal brightness difference result; Step 4: During the adjustment process, the brightness adjustment of the light source of the current dimming display panel is monitored in real time, and feedback adjustment is performed.

[0019] In this embodiment, the preset light sensor is a light sensor pre-set for monitoring the ambient light intensity of the environment surrounding the dimming display panel; the first ambient light intensity refers to the light intensity of the environment surrounding the dimming display panel at the current moment; the brightness preference refers to the user's expectation or preference for the brightness of the display panel under different ambient light intensities; the ideal brightness difference result is composed of the dimmed light source, the raised light source and the corresponding first brightness difference in the current dimming display panel.

[0020] The beneficial effects of the above technical solution are: by analyzing the first ambient light intensity obtained by real-time monitoring of the ambient light intensity of the dimming display panel, the ambient light intensity and brightness preference at future moments are predicted and analyzed to obtain the ideal brightness difference result; according to the ideal brightness difference result, the light source brightness of the current dimming display panel is adjusted, and the adjustment process and corresponding feedback adjustment are monitored in real time, which can realize intelligent adjustment of the light source brightness of the display panel and improve the display effect.

[0021] An embodiment of the present invention provides a method for stabilizing the brightness of a light source of a dimming display panel, which analyzes the first ambient light intensity, predicts and analyzes the ambient light intensity and brightness preference at a future moment, and obtains an ideal brightness difference result, including: Inputting the first ambient light intensity into a pre-established ambient prediction model to obtain a predicted ambient light intensity result at a future moment; The predicted future time and the predicted environmental light intensity results are used as input, input into the pre-established brightness preference analysis model, and the brightness preference results are output; If the real-time brightness of all the current dimming display panel light sources is consistent with the ideal brightness value of the corresponding light source in the brightness preference result, it is determined that the brightness of the light source of the current dimming display panel does not need to be adjusted; If the real-time brightness of the dimming display panel light source is inconsistent with the ideal brightness value of the corresponding light source in the brightness preference result, the corresponding dimming display panel light source is marked as the first light source; subtracting the ideal brightness value of the corresponding light source in the brightness preference result from the real-time brightness of the first light source to obtain a first brightness difference; The first light source in the current dimming display panel and the corresponding first brightness difference are output as an ideal brightness difference result.

[0022] In this embodiment, the first ambient light intensity refers to the light intensity of the environment surrounding the dimming display panel at the current moment; the environmental prediction model is obtained by collecting a large amount of historical ambient light intensity data (such as light intensity values ​​at different times and under different weather conditions) and pre-processing it as training data to train a neural network, which is used to predict the light intensity of the environment surrounding the dimming display panel at future moments; the predicted future moment refers to the time point when the environmental prediction model predicts the ambient light intensity, such as 2 hours later; the environmental prediction light intensity result refers to the ambient light intensity at the predicted future moment predicted by the environmental prediction model based on the first ambient light intensity.

[0023] In this embodiment, the brightness preference analysis model is obtained by collecting a large amount of users' brightness preference data under different ambient light intensities, pre-processing the data, and using it as training data to train a neural network, and is used to predict the ideal brightness of the dimming display panel light source at the future moment; the brightness preference result refers to the ideal brightness value of all dimming display panel light sources at the predicted future moment output by the brightness preference analysis model based on the predicted future moment and the predicted ambient light intensity; the real-time brightness refers to the brightness of the dimming display panel light source at the current moment, wherein the dimming display panel light source refers to various types of light-emitting elements or components in the current dimming display panel, such as light-emitting elements made of organic electroluminescent materials.

[0024] In this embodiment, the first light source refers to a dimming display panel light source whose real-time brightness is inconsistent with the ideal brightness value of the corresponding light source in the brightness preference result; the ideal brightness value of the light source refers to the brightness value generated by the first light source based on the brightness preference analysis model; the first brightness difference refers to the brightness difference between the real-time brightness of the first light source and the ideal brightness value of the corresponding light source in the brightness preference result, which may be positive or negative.

[0025] The beneficial effect of the above technical solution is: by analyzing the first ambient light intensity, the ambient light intensity and brightness preference at future moments are predicted and analyzed, and the ideal brightness difference result is obtained, which can provide a strong data basis for subsequent panel light source brightness adjustment.

[0026] An embodiment of the present invention provides a method for stabilizing the brightness of a light source of a dimming display panel, which adjusts the brightness of the light source of the current dimming display panel according to the ideal brightness difference result, including: Obtain a list of preset available adjustment devices for the dimming display panel at the current moment; Performing light source adjustment device matching on the first light source in the ideal brightness difference result and a preset list of available adjustment devices to obtain an adjustment device matching result; According to the matching result of the adjustment device, the first light source whose adjustment device is successfully matched and whose first brightness difference falls within the adjustment gear range is marked as a first matching light source, and the first light source whose adjustment device is successfully matched but whose first brightness difference does not fall within the adjustment gear range is marked as a second matching light source; Calculate the ratio of the number of first matching light sources to the available number of adjustment devices to obtain a first matching ratio; If the first matching ratio is less than the dynamic matching ratio, the brightness of the first matching light source is adjusted according to the first brightness difference using the adjustment device that successfully matches the first matching light source; if a second matching light source exists, the current second matching light source is marked as a special light source; If the first matching ratio is not less than the dynamic matching ratio, the expected number of matches is obtained; Sort the current first matching light sources in ascending order according to the first brightness difference to obtain a first matching list; The first matching light sources of the first expected matching number in the first matching list are regarded as selected light sources, and the brightness is adjusted according to the first brightness difference using the adjustment device corresponding to the selected light source that has successfully matched; The remaining first matching light sources except the selected light source in the first matching list are regarded as special light sources; if a second matching light source exists, the current second matching light source is marked as a special light source; and the brightness of the special light source is adjusted.

[0027] In this embodiment, the preset available adjustment device list is a list of devices that can be used to adjust the brightness of the light source in the dimming display panel at the current moment, such as a variable resistor; the adjustment device matching result refers to the result of matching the lowered light source or the raised light source in the ideal brightness difference result with the preset available adjustment device list; the adjustment gear range refers to the brightness adjustment range that the adjustment device can achieve, expressed as brightness difference; the first matching light source refers to the light source whose adjustment device is successfully matched and the first brightness difference belongs to the adjustment gear range; the second matching light source refers to the light source whose adjustment device is successfully matched but the first brightness difference does not belong to the adjustment gear range.

[0028] In this embodiment, the first matching ratio is obtained by dividing the current number of first matching light sources by the available number of adjustment devices; the dynamic matching ratio is used to determine whether to use the adjustment device to adjust the brightness of all first matching light sources; the expected matching number refers to the number of light sources selected for brightness adjustment in the first matching list when the first matching ratio is not less than the dynamic matching ratio, which is obtained by multiplying the dynamic matching ratio by the current available number of adjustment devices; the first matching list is a list obtained by sorting the current first matching light sources from small to large according to the first brightness difference; the selected light source refers to the light source with the expected matching number in the first matching list; the special light source refers to the remaining first matching light sources that have not been selected as selected light sources in the first matching list, and all second matching light sources.

[0029] The beneficial effect of the above technical solution is that by using different adjustment methods to adjust the brightness of the light source of the current dimming display panel according to the ideal brightness difference result, the flexibility of brightness adjustment can be achieved and the efficiency of brightness adjustment can be effectively improved.

[0030] An embodiment of the present invention provides a method for stably adjusting the brightness of a light source of a dimming display panel, further comprising: Obtain device history usage records of all regulating devices in a preset available regulating device list from a preset circuit component database; Extracting historical associated life parameter data from the historical usage records of the equipment, inputting the data into a pre-established life prediction model to perform life prediction on all regulating devices in a preset available regulating device list to obtain a first predicted life; Performing a weighted average calculation on the first predicted lifespan of all regulating devices in the preset available regulating device list and the corresponding historical maintenance frequencies to obtain a key availability coefficient of the corresponding regulating device; Mark the regulating devices in the preset available regulating device list whose key availability coefficient is greater than the set availability threshold as applicable regulating devices; Based on a comprehensive analysis of the number of applicable regulating devices and the available number of regulating devices, the dynamic matching ratio at the current moment is obtained.

[0031] In this embodiment, the preset circuit element database refers to the storage of basic information of circuit elements involved in the dimming display panel (such as model, specification, performance parameters, expected service life) and historical usage records of the elements; the historical usage record of the equipment refers to the data recorded in the past use process of all the adjustment devices in the preset available adjustment device list, such as historical usage time, historical usage frequency, historical fault records, historical maintenance frequency and historical working environment, etc.; historical associated life parameter data refers to parameter data directly related to the equipment life extracted from the historical usage record of the equipment, such as the working environment temperature; the life prediction model is a mathematical model obtained by training a neural network by establishing a training data set based on the historical associated life parameter data, and is used to predict the remaining life of the adjustment device; the first predicted life is used to represent the estimated remaining service life of all the adjustment devices in the preset available adjustment device list under the current usage conditions; the key availability coefficient is obtained by weighted average calculation of the first predicted life of the adjustment device and the corresponding historical maintenance frequency, and is used to express the availability of the current adjustment device. The calculation formula is: Where, It is expressed as the first predicted life of the current regulating equipment; Expressed as the weight of the impact of the first predicted life on the availability of the analyzed equipment; It is expressed as the historical maintenance frequency of the current regulating equipment; 2 represents the weight of the impact of historical maintenance frequency on the availability of the analyzed equipment; the weights assigned to the first predicted life and historical maintenance frequency are obtained by solving the matrix constructed after pairwise comparison and relative importance scoring using the hierarchical analysis method; the set availability threshold is pre-set, generally 0.7; the applicable regulating equipment refers to the regulating equipment in the preset available regulating equipment list whose key availability coefficient is greater than the set availability threshold.

[0032] The beneficial effect of the above technical solution is: by considering the life and performance of the adjustment device, suitable adjustment devices are screened out from all adjustment devices in the preset list of available adjustment devices, thereby determining the dynamic matching ratio at the current moment, and providing data basis for adjusting the light source brightness of the current dimming display panel using different adjustment methods.

[0033] An embodiment of the present invention provides a method for stably adjusting the brightness of a light source of a dimming display panel. The calculation formula for the dynamic matching ratio is as follows: Where, Expressed as the dynamic matching ratio; It is expressed as the number of currently applicable regulating devices; It is expressed as the current available number of regulating devices; It represents the total number of adjustment devices in the dimming display panel; e is a constant with a value of 2.7.

[0034] The beneficial effect of the above technical solution is: by calculating the dynamic matching ratio, it provides data basis for using different adjustment methods to adjust the light source brightness of the current dimming display panel, which is conducive to realizing intelligent adjustment of the light source brightness of the display panel and improving the display effect.

[0035] An embodiment of the present invention provides a method for stabilizing the brightness of a light source of a dimming display panel, which adjusts the brightness of a special light source, including: Extracting the first brightness difference of the current special light source from the ideal brightness difference result as a matching condition, and obtaining an initial duty cycle variable by matching from a preset lookup table; Using the initial duty cycle variable, adding it to the real-time duty cycle of the current special light source to obtain a first duty cycle; Expanding the ideal brightness value of the special light source to obtain a first reference brightness range; Obtaining historical brightness records of the special light source whose historical light source brightness falls within a first reference brightness range, and extracting corresponding historical duty cycles therefrom as reference duty cycles, with the historical light source brightness being the reference light source brightness; Calculating a parameter duty cycle difference between a reference duty cycle and a current first duty cycle; Calculate the reference brightness difference between the reference light source brightness and the ideal brightness value of the light source; With the reference brightness difference as the independent variable and the parameter duty cycle difference as the dependent variable, the reference brightness-duty cycle difference curve of each special light source is constructed in time sequence; The reference brightness-duty cycle difference curve is divided according to the vertical axis, and the curve portion to the left of the vertical axis is marked as the first reference curve, and the curve portion to the left of the vertical axis is marked as the second reference curve; The brightness of the historical light source closest to the current moment with the smallest difference from the ideal brightness value of the current special light source is marked as the reference brightness value, and the corresponding historical duty cycle is marked as the reference duty cycle; Calculating a target duty cycle based on a combined analysis of the first reference curve, the second reference curve, the reference brightness, and the reference duty cycle; The calculation formula for the target duty cycle is as follows: Where, It is expressed as the target duty cycle of the current special light source; It represents the first duty cycle of the current special light source; It is expressed as the base duty cycle of the current special light source; It is expressed as the reference brightness value of the current special light source; It is expressed as the ideal brightness value of the current special light source; It is expressed as the absolute difference between the time when the reference brightness value of the current special light source is obtained and the current time; It is expressed as the influence weight of time difference on the calculation of current duty cycle using historical duty cycle; The slope of the second reference curve is expressed as: The slope of the first reference curve is represented as follows; is expressed as the curve area of ​​the second reference curve; is expressed as the curve area of ​​the first reference curve; Expressed as the weight of the impact of historical brightness-duty cycle nonlinear changes on the calculation of the current duty cycle; Based on the first brightness difference of the current special light source, a pre-established dimming-related parameter adjustment model is input to obtain adjusted related parameters; Combining the currently acquired target duty cycle with the adjusted related parameters to generate an adjustment instruction, which is sent to the control system of the current special light source; The control system generates an adjustment time-brightness list and an adjustment time-duty cycle list according to the received adjustment instruction; According to the adjustment time-duty cycle list, the duty cycle of the current special light source is gradually adjusted until the target duty cycle is reached, so as to adjust the brightness of the current special light source to the ideal brightness value of the corresponding light source.

[0036] In this embodiment, the preset lookup table is composed of different brightness differences and corresponding duty cycle variables; the duty cycle refers to the ratio of the time the signal is at a high level (or valid state) to the entire cycle time within a cycle, and is usually used to adjust the brightness of the light source. By changing the proportion of the time the signal is in a high level state, the average brightness of the light source can be controlled; the initial duty cycle variable is a variable obtained by matching from the preset lookup table using the first brightness difference as a matching condition, and can be positive or negative; the first duty cycle is obtained by adding the initial duty cycle variable to the real-time duty cycle of the particular light source at the current moment; the first reference brightness range is obtained by expanding the ideal brightness value of the particular light source, and is expressed as ,in, The ideal brightness value of the light source for this particular light source.

[0037] In this embodiment, the historical brightness record consists of the historical brightness value of a particular light source and the corresponding historical duty cycle; the reference light source brightness refers to the historical light source brightness selected from the historical brightness record and belonging to the first reference brightness range; the reference duty cycle refers to the corresponding historical duty cycle of the reference light source brightness; the parameter duty cycle difference is obtained by subtracting the current first duty cycle from the reference duty cycle; the reference brightness difference is obtained by subtracting the ideal brightness value of the light source from the reference light source brightness.

[0038] In this embodiment, the reference brightness-duty cycle difference curve is a curve constructed in time series with the reference brightness difference of the special light source as the independent variable and the parameter duty cycle difference as the dependent variable, and is used to characterize the nonlinear change relationship between brightness and duty cycle; the first reference curve refers to the curve part on the left side of the vertical axis after the reference brightness-duty cycle difference curve is divided according to the vertical axis; the second reference curve refers to the curve part on the right side of the vertical axis after the reference brightness-duty cycle difference curve is divided according to the vertical axis; the reference brightness value refers to the historical light source brightness that is closest to the current moment and has the smallest difference from the ideal brightness value of the current special light source; the reference duty cycle refers to the historical duty cycle corresponding to the reference brightness value.

[0039] In this embodiment, the dimming-related parameter adjustment model is a model for adjusting the dimming-related parameters based on the first brightness difference of the current special light source. The model is obtained by preprocessing a large amount of collected data on the brightness, duty cycle and dimming-related parameters to establish training samples, and then using the training samples to train the neural network; the adjusted related parameters refer to the adjustment frequency and adjustment step size adjusted based on the current dimming-related parameter adjustment model, wherein the adjustment step size refers to the amount of duty cycle change each time the duty cycle is adjusted during the brightness adjustment process; the control system refers to a system for receiving adjustment instructions, and generating an adjustment time-brightness list and an adjustment time-duty cycle list according to the instructions, and gradually adjusting the duty cycle of the light source; the adjustment instruction refers to an instruction containing a target duty cycle and adjusted related parameters, which is used to guide the control system to adjust the duty cycle; the preset adjustment time refers to the pre-set duration of the control system to adjust the duty cycle; the adjustment time-brightness list is composed of the adjustment time and the corresponding expected brightness value after adjustment; the adjustment time-duty cycle list is composed of the adjustment time and the corresponding expected duty cycle after adjustment.

[0040] The beneficial effect of the above technical solution is that by adjusting the brightness of a special light source using a set dimming technology, the brightness of the light source of the display panel can be intelligently and flexibly adjusted, thereby improving the display effect of the adjusted display panel.

[0041] An embodiment of the present invention provides a method for stabilizing the brightness of a light source of a dimming display panel, which monitors the brightness adjustment of the light source of the dimming display panel in real time during the adjustment process and performs feedback adjustment, including: Step 11: Using a set light sensor to monitor the monitored brightness value of the special light source at the current adjustment time in real time, and compare it with the brightness value at the same time in the adjustment time-brightness list to obtain a first comparison value; Step 12: When the absolute value of the first comparison value is not greater than the set comparison threshold, continue adjusting the duty cycle at the next adjustment moment; Step 13: When the absolute value of the first comparison value is greater than the set comparison threshold, determining the duty cycle adjustment direction and the duty cycle adjustment amount according to the first comparison value and the current adjustment step size; Step 14: fine-tuning the target duty cycle based on the duty cycle adjustment direction and the duty cycle adjustment amount to obtain an adjusted target duty cycle; Step 15: Combining the currently acquired adjusted target duty cycle and the adjusted related parameters to regenerate an adjustment instruction and send it to the control system of the special light source; The control system regenerates the adjustment time-brightness list and the adjustment time-duty cycle list according to the received adjustment instruction; Step 16: gradually adjusting the duty cycle of the current special light source according to the adjustment time-duty cycle list; Step 17: Repeat steps 11-16 until the duty cycle of the current special light source is adjusted to the target duty cycle, and the corresponding brightness is adjusted to the ideal brightness value of the corresponding light source.

[0042] In this embodiment, the light sensor is set to be a sensor device used to monitor the brightness value of a particular light source at the current adjustment moment in real time; the monitored brightness value is the brightness value of the particular light source measured by the light sensor at the adjustment moment; the adjustment moment is the specific time point at which brightness adjustment is performed during the adjustment process; the first comparison value is the difference between the monitored brightness value and the brightness value at the same moment in the adjustment moment-brightness list; the comparison threshold is pre-set, generally ; The duty cycle adjustment direction includes two directions: increase and decrease. When the first comparison value is positive, the duty cycle adjustment direction is decrease. When the first comparison value is negative, the duty cycle adjustment direction is increase.

[0043] In this embodiment, the duty cycle adjustment amount is determined based on the first comparison value and the currently set adjustment step size, and the formula is expressed as follows: , where Represents the current duty cycle adjustment; Represents the current first comparison value; It is expressed as a preset proportional gain; wherein, the preset proportional gain is obtained by calculating the expected adjustment step size and screening it from the preset gain mapping table with the expected adjustment step size as the matching condition. The preset gain mapping table consists of the set proportional gain and the corresponding adjustment step size range. It is established through the experiment and trial and error method. During the initial setting, a relatively small proportional gain can be selected for trial based on the stability of the brightness change and the control accuracy requirements. Then, the size of the proportional gain can be gradually adjusted by observing the actual change of the brightness. The expected adjustment step size is expressed as Where, It represents the expected adjustment step length; It is expressed as the adjustment step size at the current moment; It is represented as the first comparison value; Indicates the set comparison threshold; the adjusted target duty cycle refers to the value obtained by fine-tuning the target duty cycle according to the duty cycle adjustment direction and the duty cycle adjustment amount. When the duty cycle adjustment direction is decreasing, the adjusted target duty cycle is obtained by subtracting the duty cycle adjustment amount from the target duty cycle. When the duty cycle adjustment direction is increasing, the adjusted target duty cycle is obtained by adding the target duty cycle to the duty cycle adjustment amount.

[0044] The beneficial effect of the above technical solution is: by real-time monitoring of the brightness adjustment of the light source of the current dimming display panel during the adjustment process and performing feedback adjustment, it can help to accurately adjust the brightness of the light source of the display panel and improve the display effect.

[0045] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A method for stabilizing the brightness of a light source of a dimming display panel, characterized in that: include: Step 1: Using a preset light sensor to monitor the ambient light intensity of the dimming display panel in real time to obtain a first ambient light intensity; Step 2: Analyze the first ambient light intensity, predict and analyze the ambient light intensity and brightness preference at future moments, and obtain an ideal brightness difference result; Step 3: According to the ideal brightness difference result, the brightness of the light source of the current dimming display panel is adjusted; Step 4: During the adjustment process, real-time monitoring is performed on the light source brightness adjustment status of the current dimming display panel, and feedback adjustment is performed.

2. The method for stabilizing the brightness of a light source of a dimming display panel according to claim 1, characterized in that: Analyze the first ambient light intensity, predict and analyze the ambient light intensity and brightness preference at future moments, and obtain an ideal brightness difference result, including: Inputting the first ambient light intensity into a pre-established ambient prediction model to obtain an ambient light intensity prediction result at a future moment; The predicted future time and the predicted environmental light intensity results are used as input, and the pre-established brightness preference analysis model is input to output the brightness preference results; If the real-time brightness of all the light sources of the dimming display panels is consistent with the ideal brightness value of the corresponding light sources in the brightness preference result, it is determined that the brightness of the light source of the current dimming display panel does not need to be adjusted; If the real-time brightness of the dimming display panel light source is inconsistent with the ideal brightness value of the corresponding light source in the brightness preference result, the corresponding dimming display panel light source is marked as the first light source; The first brightness difference is obtained by subtracting the ideal brightness value of the corresponding light source in the brightness preference result from the real-time brightness of the first light source; The first light source in the current dimming display panel and the corresponding first brightness difference are output as an ideal brightness difference result.

3. The method for stabilizing the brightness of a light source of a dimming display panel according to claim 1, characterized in that: According to the ideal brightness difference result, the brightness of the light source of the current dimming display panel is adjusted, including: Obtain a list of preset available adjustment devices for the dimming display panel at the current moment; Matching the first light source in the ideal brightness difference result with the preset available adjustment device list for light source adjustment devices to obtain an adjustment device matching result; According to the matching result of the adjustment device, the first light source whose adjustment device is successfully matched and whose first brightness difference is within the adjustment gear range is marked as a first matching light source, and the first light source whose adjustment device is successfully matched but whose first brightness difference is not within the adjustment gear range is marked as a second matching light source; Calculate the ratio of the number of first matching light sources to the number of available adjustment devices to obtain a first matching ratio; If the first matching ratio is less than the dynamic matching ratio, the brightness of the first matching light source is adjusted according to the first brightness difference by using the adjustment device that successfully matches the first matching light source; if there is a second matching light source, the current second matching light source is marked as a special light source; If the first matching ratio is not less than the dynamic matching ratio, the expected number of matches is obtained; Sort the current first matching light sources from small to large according to the first brightness difference to obtain a first matching list; The first matching light sources of the first expected matching number in the first matching list are regarded as selected light sources, and the brightness is adjusted according to the first brightness difference by using the adjustment device corresponding to the selected light source that successfully matches; The remaining first matching light sources except the selected light source in the first matching list are regarded as special light sources; if there is a second matching light source, the current second matching light source is marked as a special light source; and the brightness of the special light source is adjusted.

4. The method for stabilizing the brightness of a light source of a dimming display panel according to claim 3, characterized in that: Also includes: Obtaining device history usage records of all regulating devices in a preset available regulating device list from a preset circuit component database; Extracting historical associated life parameter data from the historical use record of the equipment, inputting the pre-established life prediction model to perform life prediction on all regulating devices in the preset available regulating device list, and obtaining a first predicted life; Performing a weighted average calculation on the first predicted life of all regulating devices in the preset available regulating device list and the corresponding historical maintenance frequency to obtain a key availability coefficient of the corresponding regulating device; Mark the regulating devices in the preset available regulating device list whose key availability coefficient is greater than the set availability threshold as applicable regulating devices; Based on a comprehensive analysis of the number of applicable regulating devices and the available number of regulating devices, the dynamic matching ratio at the current moment is obtained.

5. The method for stabilizing the brightness of a light source of a dimming display panel according to claim 4, characterized in that: The calculation formula for dynamic matching ratio is as follows: ; In the formula, Expressed as dynamic matching ratio; It is expressed as the number of currently applicable regulating devices; It is expressed as the current available number of regulating devices; It is represented by the total number of adjustment devices in the dimming display panel; e is represented by a constant, and its value is 2.

7.

6. The method for stabilizing the brightness of a light source of a dimming display panel according to claim 3, characterized in that: The brightness of the special light source is adjusted, comprising: Extracting the first brightness difference of the current special light source from the ideal brightness difference result as a matching condition, and obtaining an initial duty cycle variable from a preset lookup table by matching; Using the initial duty cycle variable, adding it to the real-time duty cycle of the current special light source to obtain a first duty cycle; Expanding the ideal brightness value of the special light source to obtain a first reference brightness range; Obtaining historical brightness records of the special light source whose historical light source brightness belongs to a first reference brightness range, and extracting corresponding historical duty cycles therefrom as reference duty cycles, the historical light source brightness being the reference light source brightness; Calculating a parameter duty cycle difference between a reference duty cycle and a current first duty cycle; Calculate the reference brightness difference between the reference light source brightness and the ideal brightness value of the light source; Taking the reference brightness difference as the independent variable and the parameter duty cycle difference as the dependent variable, the reference brightness-duty cycle difference curve of each special light source is constructed in time sequence; The reference brightness-duty cycle difference curve is divided according to the vertical axis, and the curve portion on the left side of the vertical axis is marked as the first reference curve, and the curve portion on the left side of the vertical axis is marked as the second reference curve; The brightness of the historical light source closest to the current moment and having the smallest difference from the ideal brightness value of the current special light source is marked as the reference brightness value, and the corresponding historical duty cycle is marked as the reference duty cycle; Calculating a target duty cycle based on a combined analysis of the first reference curve, the second reference curve, a reference brightness, and a reference duty cycle; The calculation formula of the target duty cycle is as follows: ; In the formula, It is expressed as the target duty cycle of the current special light source; It is represented as the first duty cycle of the current special light source; It is expressed as the base duty cycle of the current special light source; It is expressed as the reference brightness value of the current special light source; It is expressed as the ideal brightness value of the current special light source; It is expressed as the absolute difference between the time when the reference brightness value of the current special light source is obtained and the current time; It is expressed as the influence weight of the time difference on the calculation of the current duty cycle using the historical duty cycle; The slope of the curve represented by the second reference curve; The slope of the curve represented by the first reference curve; is expressed as the curve area of ​​the second reference curve; is represented as the curve area of ​​the first reference curve; It is expressed as the weight of the impact of the nonlinear change of historical brightness-duty cycle on the calculation of the current duty cycle; Based on the first brightness difference of the current special light source, a pre-established dimming-related parameter adjustment model is input to obtain adjusted related parameters; The currently acquired target duty cycle and the adjusted related parameters are combined to generate an adjustment instruction, which is sent to the control system of the current special light source; The control system generates an adjustment time-brightness list and an adjustment time-duty cycle list according to the received adjustment instruction; According to the adjustment time-duty cycle list, the duty cycle of the current special light source is gradually adjusted until the target duty cycle is reached, so as to adjust the brightness of the current special light source to the ideal brightness value of the corresponding light source.

7. The method for stabilizing the brightness of a light source of a dimming display panel according to claim 5, characterized in that: Dimming related parameters refer to the adjustment frequency and adjustment step size.

8. The method for stabilizing the brightness of a light source of a dimming display panel according to claim 1, characterized in that: Real-time monitoring of the light source brightness adjustment of the current dimming display panel during the adjustment process, and feedback adjustment, including: Step 11: Use the set light sensor to monitor the monitored brightness value of the special light source at the current adjustment time in real time, and compare it with the brightness value at the same time in the adjustment time-brightness list to obtain a first comparison value; Step 12: When the absolute value of the first comparison value is not greater than the set comparison threshold, continue to adjust the duty cycle at the next adjustment moment; Step 13: when the absolute value of the first comparison value is greater than the set comparison threshold, determining the duty cycle adjustment direction and the duty cycle adjustment amount according to the first comparison value and the current adjustment step; Step 14: fine-tuning the target duty cycle based on the duty cycle adjustment direction and the duty cycle adjustment amount to obtain an adjusted target duty cycle; Step 15: Combining the currently acquired adjusted target duty cycle with the adjusted related parameters to regenerate an adjustment instruction, and sending it to the control system of the special light source; The control system regenerates the adjustment time-brightness list and the adjustment time-duty cycle list according to the received adjustment instruction; Step 16: According to the adjustment time-duty cycle list, gradually adjust the duty cycle of the current special light source; Step 17: Repeat steps 11-16 until the duty cycle of the current special light source is adjusted to the target duty cycle, and the corresponding brightness is adjusted to the ideal brightness value of the corresponding light source.

Images