Screen content and backlight dynamic collaborative optimization method and system based on ambient light self-adaption

Abstract

The invention discloses a screen content and backlight dynamic collaborative optimization method and system based on ambient light self-adaption, and belongs to the technical field of display, and the method comprises the steps: S10, carrying out the environment grade discrimination of the brightness of ambient light, including the discrimination of a dark light environment, a medium light environment, a bright light environment and a strong light environment; s20, acquiring the brightness of the ambient light and the backlight brightness of a screen of the equipment, and calculating the brightness difference between the brightness of the ambient light and the backlight brightness; the brightness difference is the brightness difference between the environment grade corresponding to the brightness of the environment light and the backlight brightness. According to the invention, the backlight brightness and the screen content of the screen are dynamically adjusted according to the ambient light brightness, the ambient light level and the backlight brightness level are distinguished, and adjustment is carried out according to the brightness difference, so that unnecessary power consumption increase is avoided, the service life of a battery of equipment is prolonged, and the use experience of a user is improved.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to a method and system for dynamic collaborative optimization of screen content and backlight based on ambient light adaptation. Background Technology

[0002] With the widespread use of electronic devices, users are increasingly using screen devices under various ambient light conditions. Existing screen display technologies, when faced with changes in ambient light, often can only adjust backlight brightness or simply change screen content display parameters, failing to achieve dynamic and coordinated optimization between screen content and backlight.

[0003] Regarding this research, application CN202010745515.X provides a method for adjusting the backlight of a digital photo frame based on an ambient light sensor. This technical solution includes the following steps: Step 1: Parameter initialization; Step 2: Determining whether the automatic backlight is on; if so, proceeding to Step 3; otherwise, marking the previous state as "automatic backlight not on"; Step 3: Obtaining the ambient brightness by reading the light sensor and converting its accuracy; Step 4: Determining whether the previous state was "automatic backlight on," and setting the backlight accordingly. This technical solution adjusts the backlight of the digital photo frame based on the light sensor and can adapt to both dark and bright environments.

[0004] Another application, CN202210001276.6, discloses a method for controlling the backlight brightness of a display device and a screen. This technical solution includes a display; a first sensor for collecting ambient light intensity data around the display device at preset time intervals; a second sensor for detecting the light-sensing state of the display device; a controller for acquiring ambient light intensity data around the display device after changes in its light-sensing state and storing the ambient light intensity data in a cache queue; and creating ambient light intensity baseline data based on the ambient light intensity data stored in the cache queue. The ambient light intensity baseline data is established based on ambient light intensity data collected within a preset time period. This technical solution allows for more precise backlight brightness adjustment of the display device, adapting to different changes in light-sensing state and improving the user experience.

[0005] However, while the adaptive backlighting and screen content adjustment of the aforementioned technical solutions can reduce power consumption to some extent, they are poor in terms of power control. For example, when the ambient light intensity does not change significantly, some devices will still frequently adjust brightness and optimize screen content, resulting in unnecessary power consumption increases, reduced battery life, and a lower user experience. Summary of the Invention

[0006] In view of the problems existing in the field of display technology, the present invention is proposed.

[0007] Therefore, one of the objectives of this invention is to provide a method and system for dynamic collaborative optimization of screen content and backlight based on ambient light adaptation. This method dynamically adjusts the backlight brightness and screen content according to the ambient light intensity, and distinguishes between ambient light level and backlight brightness level, and adjusts them according to the brightness difference. This avoids unnecessary power consumption increases, extends the battery life of the device, and improves the user experience.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0009] On the one hand, the present invention provides

[0010] A screen content and backlight dynamic collaborative optimization method based on ambient light adaptation includes the following steps:

[0011] S10: Differentiate the ambient light brightness into environmental levels, including low light environment, medium light environment, bright light environment and strong light environment.

[0012] S20: Obtain the ambient light brightness and the device screen backlight brightness, and calculate the brightness difference between the ambient light brightness and the backlight brightness; the brightness difference is the difference between the ambient light brightness and the backlight brightness corresponding to the ambient light brightness.

[0013] S30: The backlight brightness is differentiated into brightness levels, including a first brightness, a second brightness, a third brightness, and a fourth brightness. The brightness level corresponding to the backlight brightness is obtained based on the brightness difference. The first brightness, the second brightness, the third brightness, and the fourth brightness are 20%, 40%, 60%, and 80% of the highest backlight brightness, respectively.

[0014] S40: Based on the brightness level corresponding to the backlight brightness, collect the changes in ambient light brightness, and adjust the backlight brightness and screen content according to the changes; the adjustment of the screen content includes screen color adjustment and contrast adjustment; the color adjustment includes color saturation.

[0015] S50: Preset brightness nodes based on the changes in ambient light brightness, including setting a brightness node every 0.5 to 1 meter, and obtaining the environmental level corresponding to each brightness node;

[0016] S60: When the brightness of the ambient light changes toward the ambient level, if the brightness is already higher than half the brightness of the ambient light corresponding to the ambient level, then the backlight brightness and screen content are adjusted; otherwise, no adjustment is made.

[0017] In a preferred embodiment of the present invention, in step S20, the brightness difference between the ambient light brightness and the backlight brightness is calculated, wherein the brightness difference includes an absolute brightness difference and a relative brightness difference; as shown below:

[0018] ΔL=|L env -L back |;

[0019] In the formula, ΔL represents the brightness difference, L env Indicates ambient light intensity, L back This represents the backlight brightness. |·| is the absolute value sign to ensure that the brightness difference is non-negative.

[0020] In a preferred embodiment of the present invention, the relative brightness difference is calculated according to the following formula:

[0021]

[0022] In the formula, ΔL rel L represents the relative brightness difference and is dimensionless. env Indicates ambient light intensity, L back Indicates backlight brightness.

[0023] In a preferred embodiment of the present invention, in step S40, changes in ambient light brightness are collected based on brightness levels corresponding to backlight brightness, and the backlight brightness and screen content are adjusted according to these changes. The adjustment steps include:

[0024] The brightness of the ambient light is obtained, and the ambient level, brightness level, and screen content are determined based on the brightness.

[0025] Based on the ambient light brightness corresponding to the environmental level, a range of ambient light brightness variation is preset according to the ambient light brightness, wherein the range is ≤20 nits.

[0026] The range includes the variation of the base brightness at any one of the four ends: up, down, left, and right.

[0027] If the change in base brightness to either end is ≤20 nits, then the backlight brightness and screen content corresponding to the brightness level are not adjusted; otherwise, the screen content is adjusted, but the backlight brightness is not adjusted; adjusting the screen content includes increasing color saturation and contrast.

[0028] In a preferred embodiment of the present invention, if the change in base brightness toward any end is greater than 20 nits, without adjusting the backlight brightness, the ambient level corresponding to the change of more than 20 nits is obtained. Within the ambient level, the change in ambient level is obtained in a time interval of 0.5 to 1 second. If the brightness of the ambient light corresponding to the ambient level shows an increasing trend during the change, the brightness level of the backlight is increased; otherwise, it is not adjusted.

[0029] In a preferred embodiment of the present invention, after obtaining the environmental level corresponding to greater than 20 nits, the brightness of the ambient light corresponding to the environmental level is marked as a reference brightness space, the brightness of the ambient light corresponding to the base brightness is marked as the original brightness space, the brightness of the edge of the reference brightness space is calculated, and the brightness is marked as the critical brightness; the brightness is calculated according to the following formula:

[0030] θ=Δ max +α×(p max -Δ max );

[0031] In the formula, θ represents the brightness at the edge of the reference brightness space, and Δ max p represents the maximum brightness in the original brightness space. max α represents the maximum brightness of the reference brightness space, and α represents the expansion factor.

[0032] The expansion coefficient is the degree of brightness expansion between the maximum brightness of the original brightness space and the maximum brightness of the reference brightness space, and the value of the expansion coefficient is between 0 and 1.

[0033] If α equals 0, it means that no expansion is performed, and the brightness of the edge of the reference brightness space is equal to the maximum brightness of the original brightness space.

[0034] If α equals 1, then the brightness at the edge of the reference brightness space will be equal to the maximum brightness of the reference brightness space.

[0035] In a preferred embodiment of the present invention, the following formula is also included:

[0036] θ = log(Δ) max +β)×k; where log represents the logarithm; the logarithm includes the base-10 logarithm;

[0037] In the formula, θ represents the brightness at the edge of the reference brightness space, and Δ max β represents the maximum brightness in the original brightness space, β represents the offset to avoid a logarithmic zero, and k represents the conversion coefficient used to adjust the brightness after logarithmic conversion.

[0038] In a preferred embodiment of the present invention: when the change in base brightness to any end in the future is greater than 20 nits, the ambient level corresponding to the change of more than 20 nits is obtained, the brightness of the ambient light corresponding to the ambient level is marked as a reference brightness space, and the brightness of the ambient light corresponding to the base brightness is marked as the original brightness space. If the brightness of the edge of the reference brightness space is less than the critical brightness, the brightness level of the backlight is not increased; otherwise, it is increased.

[0039] On the other hand, the present invention provides a system for applying the ambient light adaptive screen content and backlight dynamic collaborative optimization method as described above, comprising:

[0040] The ambient light differentiation module is used to differentiate the brightness of ambient light into different environmental levels, including low light environment, medium light environment, bright light environment and strong light environment.

[0041] The data acquisition module is used to acquire the brightness of ambient light and the backlight brightness of the device screen, and calculate the brightness difference between the brightness of ambient light and the backlight brightness; the brightness difference is the difference between the ambient light brightness and the backlight brightness corresponding to the ambient light brightness.

[0042] The backlight brightness differentiation module is used to differentiate the backlight brightness into brightness levels, including first brightness, second brightness, third brightness and fourth brightness, and to obtain the brightness level corresponding to the backlight brightness based on the brightness difference; the first brightness, second brightness, third brightness and fourth brightness are 20%, 40%, 60% and 80% of the highest backlight brightness, respectively.

[0043] The data adjustment module is used to collect changes in ambient light brightness based on brightness levels corresponding to backlight brightness, and adjust the backlight brightness and screen content according to the changes; the adjustment of the screen content includes screen color adjustment and contrast adjustment; the color adjustment includes color saturation.

[0044] The data determination module adjusts the backlight brightness and screen content when the ambient light brightness changes towards the ambient level. If the brightness is already higher than half the ambient light brightness corresponding to the ambient level, the backlight brightness and screen content are adjusted; otherwise, no adjustment is made.

[0045] 1. This invention distinguishes backlight brightness levels and obtains the corresponding brightness level based on the brightness difference, thereby achieving precise control of backlight brightness. When the ambient light brightness changes, the backlight brightness can be reasonably adjusted, avoiding frequent and large changes in backlight brightness. This helps to extend the service life of the backlight component, while reducing the power consumption of the device and improving the power utilization efficiency of the device.

[0046] 2. This invention collects ambient light brightness changes based on brightness levels corresponding to backlight brightness, enabling it to monitor dynamic changes in ambient light brightness and respond quickly. By presetting brightness nodes and acquiring the environmental levels corresponding to each brightness node, it achieves refined monitoring and management of ambient light brightness changes, allowing the device to adapt to changes in ambient light in a timely and accurate manner.

[0047] 3. By calculating the brightness difference between ambient light and backlight, including absolute and relative brightness differences, accurate quantitative basis is provided for adjusting backlight brightness and screen content. Adjustment based on brightness difference can more accurately meet the display needs under different ambient light conditions, improving the scientific nature and effectiveness of adjustment.

[0048] 4. After obtaining the environmental level corresponding to greater than 20 nits, the concepts of reference brightness space and original brightness space are introduced. The brightness of the edge of the reference brightness space is calculated, which provides a clearer reference limit for further adjustment of backlight brightness and improves the accuracy of adjustment. Attached Figure Description

[0049] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0050] Figure 1 This is a schematic diagram of the modular structure of the screen content and backlight dynamic collaborative optimization system based on ambient light adaptation, according to an embodiment of the present invention.

[0051] Figure 2 This is a schematic diagram of the method flow according to an embodiment of the present invention;

[0052] The numbers in the diagram are: 110 - Ambient light differentiation module; 120 - Data acquisition module; 130 - Backlight brightness differentiation module; 140 - Data adjustment module; 150 - Data judgment module. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention are within the scope of protection of the present invention.

[0054] Because existing technology still causes some devices to frequently adjust brightness and optimize screen content even when ambient light intensity does not change significantly, it leads to unnecessary power consumption, reduced battery life, and a lower user experience.

[0055] Based on this, the present invention proposes a method and system for dynamic collaborative optimization of screen content and backlight based on ambient light adaptation. By dynamically adjusting the backlight brightness and screen content according to the ambient light intensity, and by distinguishing between ambient light level and backlight brightness level and adjusting according to the brightness difference, unnecessary power consumption is avoided, the battery life of the device is extended, and the user experience is improved.

[0056] The present solution will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0057] Reference Figures 1 to 2 This is one embodiment of the present invention, which provides a method for dynamic collaborative optimization of screen content and backlight based on ambient light adaptation, including the following steps:

[0058] S10: Differentiate the ambient light brightness into environmental levels, including low light environment, medium light environment, bright light environment and strong light environment.

[0059] It should be noted that the light intensity ranges from 0 to 50 nits in low-light environments; 50 to 500 nits in medium-light environments; 500 to 1000 nits in bright-light environments; and 1000 nits and above in strong-light environments.

[0060] Ambient light intensity is divided into different levels so that corresponding measures can be taken according to different ambient light conditions;

[0061] S20: Obtain the ambient light brightness and the device screen backlight brightness, and calculate the brightness difference between the ambient light brightness and the backlight brightness; the brightness difference is the difference between the ambient light brightness and the backlight brightness corresponding to the ambient light brightness.

[0062] In this embodiment, the ambient light and backlight brightness are obtained and the brightness difference is calculated to provide a basis for subsequent adjustment;

[0063] S30: The backlight brightness is differentiated into brightness levels, including first brightness, second brightness, third brightness and fourth brightness, and the brightness level corresponding to the backlight brightness is obtained based on the brightness difference; the first brightness, second brightness, third brightness and fourth brightness are 20%, 40%, 60% and 80% of the highest backlight brightness, respectively.

[0064] In this embodiment, the backlight brightness is divided into levels, and the corresponding backlight brightness level is based on different brightness differences, so as to achieve fine control of the backlight brightness.

[0065] S40: Based on the brightness level corresponding to the backlight brightness, it collects changes in ambient light brightness and adjusts the backlight brightness and screen content accordingly; the adjustment of screen content includes color adjustment and contrast adjustment; color adjustment includes color saturation.

[0066] In this embodiment, the ambient light brightness changes are monitored based on the backlight brightness level, and the backlight brightness and screen content (including color saturation and contrast) are adjusted accordingly to make the screen adapt to changes in ambient light.

[0067] S50: Preset brightness nodes based on the changes in ambient light brightness, including setting a brightness node every 0.5 to 1 meter, and obtaining the environmental level corresponding to each brightness node;

[0068] In this embodiment, a brightness node is preset and the corresponding environmental level is obtained to accurately monitor and manage changes in ambient light brightness.

[0069] S60: When the ambient light brightness changes towards the ambient level, if the brightness is already higher than half the ambient light brightness corresponding to the ambient level, then the backlight brightness and screen content will be adjusted; otherwise, no adjustment will be made.

[0070] In this embodiment, the ambient light brightness is adjusted when it is close to half of the corresponding ambient light level, so as to avoid frequent adjustments and balance the display effect and adjustment stability.

[0071] In S20, the brightness difference between the ambient light and the backlight is calculated, including both absolute and relative brightness differences; as shown below:

[0072] ΔL=|L env -L back |;

[0073] In the formula, ΔL represents the brightness difference, L env Indicates ambient light intensity, L back This represents the backlight brightness, and |·| is the absolute value sign to ensure that the brightness difference is non-negative.

[0074] In this embodiment, based on the ambient light brightness and backlight brightness, the brightness difference between the two is calculated, including the absolute brightness difference and the relative brightness difference, to provide a quantitative basis for subsequent adjustment;

[0075] Therefore, by calculating the brightness difference, an accurate quantitative basis is provided for adjusting the backlight brightness and screen content, making the adjustment more scientific and reasonable;

[0076] The relative brightness difference is calculated using the following formula:

[0077]

[0078] In the formula, ΔL rel L represents the relative brightness difference and is dimensionless. env Indicates ambient light intensity, L back Indicates backlight brightness;

[0079] In this embodiment, this formula is applicable to describing the degree of change of ambient light brightness relative to backlight brightness, and is suitable for cases where the backlight brightness is not zero.

[0080] It should be noted that by calculating the relative brightness difference, the relative difference between ambient light brightness and backlight brightness was further quantified, providing a more accurate reference for subsequent adjustments.

[0081] It can accurately quantify the relative difference between ambient light brightness and backlight brightness, providing a more accurate reference for subsequent adjustments and improving the accuracy and effectiveness of the adjustments;

[0082] Furthermore, the relative brightness difference is a dimensionless quantity, which makes it easy to compare and analyze under different devices and different ambient light conditions, thus having better versatility and comparability;

[0083] It should be further explained that the absolute brightness difference and the relative brightness difference reflect the difference between ambient light brightness and backlight brightness from different perspectives, and can more comprehensively characterize the brightness relationship between the two, providing richer information for subsequent adjustment.

[0084] Of the two formulas above, the first formula calculates the absolute difference between ambient light brightness and backlight brightness, and the result is a non-negative value. The absolute brightness difference represents the actual difference in brightness between the two, which is very intuitive for evaluating the brightness adaptability of the screen under different ambient light conditions.

[0085] The second formula, based on the first formula, further compares the brightness difference with the backlight brightness to obtain a dimensionless relative value. The relative brightness difference can more intuitively reflect the change ratio of ambient light brightness to backlight brightness. It emphasizes the change range of ambient light brightness relative to backlight brightness, rather than a simple brightness difference.

[0086] Both formulas use ambient light and backlight brightness as input parameters to evaluate the screen's performance under different lighting conditions. The first formula provides an absolute brightness difference value, while the second formula calculates the relative change ratio based on this difference.

[0087] The two formulas are complementary in practical applications. Absolute brightness difference can be used for simple and quick brightness difference assessment, while relative brightness difference is more useful when it is necessary to compare the relative magnitude of brightness differences between different devices or under different ambient light conditions. By combining these two indicators, we can more comprehensively understand and optimize the adaptive adjustment strategy of screen content and backlight.

[0088] In S40, changes in ambient light brightness are collected based on brightness levels corresponding to backlight brightness. The backlight brightness and screen content are adjusted according to these changes. The adjustment steps include:

[0089] Obtain the ambient light brightness, determine the ambient light level and brightness level based on the brightness, and the screen content;

[0090] The ambient light brightness corresponding to the environmental level is used as the base brightness. Based on the base brightness, a range of ambient light brightness variation is preset, where the ambient light brightness variation is ≤20 nits.

[0091] The range includes changes in the base brightness at any of the four ends: up, down, left, and right.

[0092] If the change in base brightness to either end is ≤20 nits, then the backlight brightness and screen content corresponding to the brightness level will not be adjusted; otherwise, the screen content will be adjusted, but the backlight brightness will not be adjusted; adjusting the screen content includes increasing color saturation and contrast.

[0093] In this embodiment, color saturation is increased, including by 20% to 50%, to compensate for problems such as color whitening and lack of vibrancy that may occur under strong light, thereby enhancing the visual appeal and clarity of the screen content.

[0094] It should be noted that if the content is for viewing images or videos or other content that requires high color accuracy, the color saturation can be increased by 30% to 60%; while for text reading or other scenarios where color accuracy is relatively low, an increase of 20% to 30% is sufficient.

[0095] Improving contrast, including by 20% to 50%, helps to make the bright parts of the screen image brighter and the dark parts darker, enhancing the image's depth and three-dimensionality, and making the content more visually impactful under normal lighting conditions.

[0096] It should be noted that if the content is for viewing images or videos, which require high contrast, the contrast can be increased by 30% to 60%; while for text reading and other scenarios where the contrast requirement is relatively low, an increase of 20% to 30% is sufficient.

[0097] Targeted adjustments are made based on the range of ambient light intensity changes, avoiding unnecessary adjustments and improving the efficiency and effectiveness of the adjustments.

[0098] If the change in base brightness to either end is greater than 20 nits, without adjusting the backlight brightness, obtain the ambient level corresponding to the change greater than 20 nits. Within the ambient level, obtain the change in ambient level in a time interval of 0.5 to 1 second. If the brightness of the ambient light corresponding to the ambient level shows an increasing trend during the change, then increase the brightness level of the backlight; otherwise, do not adjust it.

[0099] In this embodiment, when the ambient light brightness changes significantly, the ambient level corresponding to greater than 20 nits is obtained, and the trend of change of the ambient level is monitored to determine whether to increase the brightness level of the backlight.

[0100] This allows for a timely response to significant changes in ambient light, avoiding poor display quality caused by rapid changes in ambient light.

[0101] By monitoring the changing trend of the environmental level, the backlight brightness level is only increased when the ambient light brightness shows an increasing trend, thus avoiding over-adjustment and improving the rationality and stability of the adjustment.

[0102] After obtaining the ambient light level corresponding to 20 nits or more, the ambient light brightness corresponding to the ambient light level is marked as the reference brightness space, and the ambient light brightness corresponding to the base brightness is marked as the original brightness space. The brightness at the edge of the reference brightness space is calculated and marked as the critical brightness. The brightness is then calculated according to the following formula:

[0103] θ=Δ max +α×(p max -Δ max );

[0104] In the formula, θ represents the brightness at the edge of the reference brightness space, and Δ max p represents the maximum brightness in the original brightness space. max α represents the maximum brightness of the reference brightness space, and α represents the expansion factor.

[0105] The expansion factor is the degree to which the brightness is expanded between the maximum brightness in the original brightness space and the maximum brightness in the reference brightness space. The value of the expansion factor ranges from 0 to 1.

[0106] If α equals 0, it means that no expansion is performed, and the brightness of the edge of the reference brightness space is equal to the maximum brightness of the original brightness space.

[0107] If α equals 1, then the brightness at the edge of the reference brightness space will be equal to the maximum brightness of the reference brightness space.

[0108] In this embodiment, by marking the ambient light brightness as a reference brightness space and the original brightness space, and calculating the edge brightness (critical brightness) of the reference brightness space, a clear reference limit is provided for further adjustment of the backlight brightness.

[0109] This avoids blind spots in the adjustment process and improves the accuracy and effectiveness of the adjustment.

[0110] By using the expansion coefficient, the edge brightness of the reference brightness space can be flexibly adjusted according to actual needs, making the adjustment more flexible and adaptable to different scenarios.

[0111] It also includes calculations based on the following formula:

[0112] θ = log(Δ) max +β)×k; where log represents the logarithm; the logarithm includes the base-10 logarithm;

[0113] In the formula, θ represents the brightness at the edge of the reference brightness space, and Δ max β represents the maximum brightness in the original brightness space, β represents the offset to avoid the logarithmic value being zero, and k represents the conversion coefficient used to adjust the brightness after logarithmic conversion;

[0114] In this embodiment, the offset is a positive value. When the maximum value of the original luminance space may be close to zero, adding the offset can prevent the logarithmic operation from producing a negative value or zero, ensuring the stability of the formula and the rationality of the result.

[0115] The conversion factor is a scaling factor used to adjust the result of the logarithmic transformation, and is used to control the brightness after the logarithmic transformation so that it can adapt to the brightness range requirements in actual applications.

[0116] When calculating the edge brightness of the reference brightness space, the brightness after logarithmic transformation was further optimized by setting the offset and transformation coefficient;

[0117] This allows for non-linear adjustment of brightness values, better adapting to changes in ambient light intensity and improving the accuracy and effectiveness of the adjustment.

[0118] Setting the offset avoids undefined or unexpected results for numerical values, thus improving the stability and reliability of the calculation.

[0119] Of the two formulas above, the first formula calculates the edge brightness of the reference brightness space by linear interpolation based on the maximum brightness of the original brightness space and the maximum brightness of the reference brightness space; it is suitable for scenarios where the brightness changes relatively linearly and gently.

[0120] The second formula is also used to calculate the edge brightness of the reference brightness space, but it introduces a logarithmic transformation, which is suitable for scenarios with a large brightness range or those that require non-linear adjustment.

[0121] Users can choose the appropriate formula based on the actual application scenario and needs. If the brightness change is relatively linear, the first formula can be selected; if a larger range of brightness changes or non-linear adjustments are required, the second formula can be selected.

[0122] When the change in base brightness to any end in the future exceeds 20 nits, obtain the ambient level corresponding to the change of more than 20 nits, mark the ambient light brightness corresponding to the ambient level as the reference brightness space, and mark the ambient light brightness corresponding to the base brightness as the original brightness space. If the brightness at the edge of the reference brightness space is less than the critical brightness, the brightness level of the backlight is not increased; otherwise, it is increased.

[0123] In this embodiment, an adjustment strategy is specified when the change in the base brightness to any end in the future is greater than 20 nits. By comparing the magnitude relationship between the edge brightness and the critical brightness of the reference brightness space, it is determined whether to increase the brightness level of the backlight.

[0124] This feature predicts and considers changes in ambient light brightness in the future, enabling adjustments to be made in advance and avoiding poor display quality due to rapid changes in ambient light.

[0125] By comparing the relationship between the edge brightness and the critical brightness in the reference brightness space, the brightness levels of the backlight are reasonably allocated, which also improves the rationality and effectiveness of the adjustment.

[0126] As can be seen from the above, this application achieves precise control of backlight brightness by dynamically adjusting the screen's backlight brightness and content display according to ambient light intensity, and by differentiating backlight brightness levels and obtaining the corresponding brightness level based on the brightness difference, thereby extending the device's battery life and improving the user experience.

[0127] This embodiment, in conjunction with the above-mentioned method for dynamic collaborative optimization of screen content and backlight based on ambient light adaptation, also proposes a system applied to this method, as follows:

[0128] The ambient light differentiation module 110 is used to differentiate the brightness of ambient light into different environmental levels, including low light environment, medium light environment, bright light environment and strong light environment.

[0129] The data acquisition module 120 is used to acquire the brightness of ambient light and the backlight brightness of the device screen, and calculate the brightness difference between the brightness of ambient light and the backlight brightness; the brightness difference is the difference between the ambient light brightness and the backlight brightness corresponding to the ambient light brightness.

[0130] The backlight brightness differentiation module 130 is used to differentiate the backlight brightness into brightness levels, including first brightness, second brightness, third brightness and fourth brightness, and to obtain the brightness level corresponding to the backlight brightness based on the brightness difference; the first brightness, second brightness, third brightness and fourth brightness are 20%, 40%, 60% and 80% of the highest backlight brightness, respectively.

[0131] The data adjustment module 140 is used to collect changes in ambient light brightness based on brightness levels corresponding to backlight brightness, and adjust the backlight brightness and screen content according to the changes; the adjustment of screen content includes screen color adjustment and contrast adjustment; color adjustment includes color saturation.

[0132] The data determination module 150 adjusts the backlight brightness and screen content when the ambient light brightness changes towards the ambient level. If the brightness is already higher than half of the ambient light brightness corresponding to the ambient level, the backlight brightness and screen content are adjusted; otherwise, no adjustment is made.

[0133] In summary, this invention dynamically adjusts the backlight brightness and screen content based on ambient light intensity, and distinguishes between ambient light levels and backlight brightness levels, adjusting them according to the brightness difference. This avoids unnecessary power consumption increases, extends the device's battery life, and improves the user experience.

[0134] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A method for dynamic collaborative optimization of screen content and backlight based on ambient light adaptation, characterized in that, Includes the following steps: S10: Differentiate the ambient light brightness into environmental levels, including low light environment, medium light environment, bright light environment and strong light environment. S20: Obtain the ambient light brightness and the device screen backlight brightness, and calculate the brightness difference between the ambient light brightness and the backlight brightness; The brightness difference is the difference between the ambient light level and the backlight brightness, corresponding to the brightness of the ambient light. S30: The backlight brightness is distinguished into brightness levels, including first brightness, second brightness, third brightness and fourth brightness, and the brightness level corresponding to the backlight brightness is obtained based on the brightness difference; The first brightness, the second brightness, the third brightness, and the fourth brightness are 20%, 40%, 60%, and 80% of the highest backlight brightness, respectively; S40: Based on the brightness level corresponding to the backlight brightness, collect the changes in ambient light brightness, and adjust the backlight brightness and screen content according to the changes; The adjustment of the screen content includes color adjustment and contrast adjustment; the color adjustment includes color saturation. S50: Preset brightness nodes based on the changes in ambient light brightness, including setting a brightness node every 0.5 to 1 meter, and obtaining the environmental level corresponding to each brightness node; S60: When the brightness of the ambient light changes toward the ambient level, if the brightness is already higher than half the brightness of the ambient light corresponding to the ambient level, then the backlight brightness and screen content are adjusted; otherwise, no adjustment is made.

2. The screen content and backlight dynamic collaborative optimization method based on ambient light adaptation as described in claim 1, characterized in that, In step S20, the brightness difference between the ambient light and the backlight is calculated, and the brightness difference includes both absolute and relative brightness differences; as shown below: ΔL=|L env -L back |; In the formula, ΔL represents the brightness difference, L env Indicates ambient light intensity, L back This represents the backlight brightness. |·| is the absolute value sign to ensure that the brightness difference is non-negative.

3. The screen content and backlight dynamic collaborative optimization method based on ambient light adaptation as described in claim 2, characterized in that, The relative brightness difference is calculated using the following formula: In the formula, ΔL re l represents the relative brightness difference, which is dimensionless; L env Indicates ambient light intensity, L back Indicates backlight brightness.

4. The screen content and backlight dynamic collaborative optimization method based on ambient light adaptation as described in claim 1, characterized in that, In step S40, changes in ambient light brightness are collected based on brightness levels corresponding to backlight brightness, and the backlight brightness and screen content are adjusted according to these changes. The adjustment steps include: The brightness of the ambient light is obtained, and the ambient level, brightness level, and screen content are determined based on the brightness. Based on the ambient light brightness corresponding to the environmental level, a range of ambient light brightness variation is preset according to the ambient light brightness, wherein the range is ≤20 nits. The range includes the variation of the base brightness at any one of the four ends: up, down, left, and right. If the change in base brightness to either end is ≤20 nits, then the backlight brightness and screen content corresponding to the brightness level are not adjusted; otherwise, the screen content is adjusted, but the backlight brightness is not adjusted; adjusting the screen content includes increasing color saturation and contrast.

5. The screen content and backlight dynamic collaborative optimization method based on ambient light adaptation as described in claim 4, characterized in that, If the change in base brightness to either end is greater than 20 nits, without adjusting the backlight brightness, obtain the ambient level corresponding to the change greater than 20 nits. Within the ambient level, obtain the change in ambient level in a time interval of 0.5 to 1 second. If the brightness of the ambient light corresponding to the ambient level shows an increasing trend during the change, then increase the brightness level of the backlight; otherwise, do not adjust it.

6. The screen content and backlight dynamic collaborative optimization method based on ambient light adaptation as described in claim 5, characterized in that, After obtaining the ambient light level corresponding to 20 nits or more, the ambient light brightness corresponding to the ambient light level is marked as the reference brightness space, and the ambient light brightness corresponding to the base brightness is marked as the original brightness space. The brightness at the edge of the reference brightness space is calculated and marked as the critical brightness. The brightness is then calculated according to the following formula: θ=Δ max +α×(p max -D max ); In the formula, θ represents the brightness at the edge of the reference brightness space, and Δ max p represents the maximum brightness in the original brightness space. max α represents the maximum brightness of the reference brightness space, and α represents the expansion factor. The expansion coefficient is the degree of brightness expansion between the maximum brightness of the original brightness space and the maximum brightness of the reference brightness space, and the value of the expansion coefficient is between 0 and 1. If α equals 0, it means that no expansion is performed, and the brightness of the edge of the reference brightness space is equal to the maximum brightness of the original brightness space. If α equals 1, then the brightness at the edge of the reference brightness space will be equal to the maximum brightness of the reference brightness space.

7. The screen content and backlight dynamic collaborative optimization method based on ambient light adaptation as described in claim 6, characterized in that, It also includes calculations based on the following formula: θ = log(Δ) max +β)×k; where log represents the logarithm; the logarithm includes the base-10 logarithm; In the formula, θ represents the brightness at the edge of the reference brightness space, and Δ max β represents the maximum brightness in the original brightness space, β represents the offset to avoid a logarithmic zero, and k represents the conversion coefficient used to adjust the brightness after logarithmic conversion.

8. The screen content and backlight dynamic collaborative optimization method based on ambient light adaptation as described in any one of claims 6-7, characterized in that, When the change in base brightness to any end in the future exceeds 20 nits, the ambient level corresponding to the change of more than 20 nits is obtained. The brightness of the ambient light corresponding to the ambient level is marked as the reference brightness space, and the brightness of the ambient light corresponding to the base brightness is marked as the original brightness space. If the brightness of the edge of the reference brightness space is less than the critical brightness, the brightness level of the backlight is not increased. Conversely, it increases.

9. A system applied to the screen content and backlight dynamic collaborative optimization method based on ambient light adaptation as described in claim 1, characterized in that, include: The ambient light differentiation module is used to differentiate the brightness of ambient light into different environmental levels, including low light environment, medium light environment, bright light environment and strong light environment. The data acquisition module is used to acquire the brightness of ambient light and the backlight brightness of the device's screen, and calculate the brightness difference between the brightness of ambient light and the backlight brightness. The brightness difference is the difference between the ambient light level and the backlight brightness, corresponding to the brightness of the ambient light. The backlight brightness differentiation module is used to differentiate the backlight brightness into brightness levels, including first brightness, second brightness, third brightness and fourth brightness, and to obtain the brightness level corresponding to the backlight brightness based on the brightness difference; The first brightness, the second brightness, the third brightness, and the fourth brightness are 20%, 40%, 60%, and 80% of the highest backlight brightness, respectively; The data adjustment module is used to collect changes in ambient light brightness based on brightness levels corresponding to backlight brightness, and adjust the backlight brightness and screen content according to the changes. The adjustment of the screen content includes color adjustment and contrast adjustment; the color adjustment includes color saturation. The data determination module adjusts the backlight brightness and screen content when the ambient light brightness changes towards the ambient level. If the brightness is already higher than half the ambient light brightness corresponding to the ambient level, the backlight brightness and screen content are adjusted; otherwise, no adjustment is made.

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