Brightness adjustment method, device, equipment, system and storage medium for a display screen

Abstract

The present application is applicable to the field of display screen technology, and provides a brightness adjustment method, device, equipment, system and storage medium for a display screen. Among them, the brightness adjustment method for the display screen specifically includes: obtaining the current illuminance of the display screen to be adjusted; obtaining the current surface structure parameters of the display screen to be adjusted; determining the current black screen brightness of the display screen to be adjusted according to the target mapping relationship and the current illuminance, where the target mapping relationship is used to represent the mapping relationship between the black screen brightness and the illuminance of the display screen under the current surface structure parameters; calculating the target display brightness for making the display screen to be adjusted in a preset contrast according to the current black screen brightness; and adjusting the display brightness of the display screen to be adjusted to the target display brightness. The embodiments of the present application can improve the stability of the display effect of the display screen in different environments.

Description

Technical Field

[0001] This application belongs to the technical field of display screens, and particularly relates to a method, device, equipment, system, and storage medium for adjusting the brightness of a display screen. Background Art

[0002] A display screen is a device used to display media data and is widely used in scenarios such as stage display, advertising display, data visualization display, and commercial display. The display effect of the display screen determines the visual experience of the viewer. Adjusting the brightness of the display screen is an important technology to assist in improving the visual effect. In related technologies, the display brightness of the display screen is usually adjusted intelligently according to the environment change. However, it is found through actual measurement that the display effect of the display screen is not stable in different environments by using this method, resulting in different visual experiences for users in different environments. Summary of the Invention

[0003] The embodiments of this application provide a method, device, equipment, system, and storage medium for adjusting the brightness of a display screen, which can solve the problem that the display effect of the display screen is not stable in different environments in related technologies.

[0004] The first aspect of the embodiments of this application provides a method for adjusting the brightness of a display screen, including: obtaining the current illuminance of the display screen to be adjusted; obtaining the current surface structure parameters of the display screen to be adjusted; determining the current black screen brightness of the display screen to be adjusted according to the current illuminance and the target mapping relationship, where the target mapping relationship is used to represent the mapping relationship between the black screen brightness and the illuminance of the display screen under the current surface structure parameters; calculating the target display brightness for the display screen to be adjusted to be in a preset contrast according to the current black screen brightness; and adjusting the display brightness of the display screen to be adjusted to the target display brightness.

[0005] The second aspect of the embodiments of this application provides a device for adjusting the brightness of a display screen, including: an illuminance obtaining unit for obtaining the current illuminance of the display screen to be adjusted; a surface structure parameter obtaining unit for obtaining the current surface structure parameters of the display screen to be adjusted; a black screen brightness determining unit for determining the current black screen brightness of the display screen to be adjusted according to the current illuminance and the target mapping relationship, where the target mapping relationship is used to represent the mapping relationship between the black screen brightness and the illuminance of the display screen under the current surface structure parameters; a brightness calculating unit for calculating the target display brightness for the display screen to be adjusted to be in a preset contrast according to the current black screen brightness; and a brightness adjusting unit for adjusting the display brightness of the display screen to be adjusted to the target display brightness.

[0006] In a third aspect of the embodiments of the present application, a terminal device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the above-described method for adjusting the brightness of the display screen are implemented.

[0007] In a fourth aspect of the embodiments of the present application, a computer-readable storage medium is provided. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the above-described method for adjusting the brightness of the display screen are implemented.

[0008] In a fifth aspect of the embodiments of the present application, a computer program product is provided. When the computer program product runs on a terminal device, the terminal device is caused to execute the method for adjusting the brightness of the display screen described in the first aspect above.

[0009] It should be noted that the black screen brightness is related to the encapsulation characteristics of the display screen surface and the ambient light brightness. In the embodiments of the present application, by obtaining the current surface structure parameters and the current illuminance of the display screen to be adjusted, and according to the target mapping relationship between the black screen brightness and the illuminance under the current surface structure parameters of the display screen and the current illuminance, the current black screen brightness of the display screen to be adjusted is determined, so that the black screen brightness can be accurately calculated with reference to the encapsulation characteristics of the display screen to be adjusted, and further the contrast of the display screen to be adjusted can be more accurately measured based on the black screen brightness. Therefore, according to the current black screen brightness, the target display brightness for making the display screen to be adjusted reach a preset contrast is calculated, and the display brightness of the display screen to be adjusted is adjusted to the target display brightness, which can make the display screen to be adjusted stably reach the preset contrast and improve the stability of the display effect of the display screen in different environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0011] Figure 1 is a schematic flowchart of the implementation of a method for adjusting the brightness of a display screen provided by an embodiment of the present application;

[0012] Figure 2 is a schematic diagram of the modules of a display system provided by an embodiment of the present application;

[0013] Figure 3 is a schematic flowchart of the specific implementation of generating a candidate mapping relationship provided by an embodiment of the present application;

[0014] Figure 4It is a schematic diagram of a candidate functional relationship provided by an embodiment of the present application;

[0015] Figure 5 It is a schematic diagram of the specific implementation process of the brightness adjustment method provided by an embodiment of the present application;

[0016] Figure 6 It is a schematic diagram of a display screen to be adjusted and an illuminometer provided by an embodiment of the present application;

[0017] Figure 7 It is a schematic diagram of the structure of a display system provided by an embodiment of the present application;

[0018] Figure 8 It is a schematic diagram of the structure of a brightness adjustment device for a display screen provided by an embodiment of the present application;

[0019] Figure 9 It is a schematic diagram of the structure of a terminal device provided by an embodiment of the present application. Specific embodiments

[0020] In order to make the objectives, technical solutions and advantages of the present application more clear and understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present application.

[0021] In the related art, environmental light brightness detection is generally adopted, and the display brightness of the display screen is adjusted by changing the display brightness of the display screen in real time at a fixed linear ratio. However, it is found through actual measurement that the display effect of the display screen in different environments is not stable by using this method, resulting in different visual experiences for users in different environments.

[0022] Through research, it is found that the level of the contrast ratio of the display screen has a very significant impact on the visual effect. The higher the contrast ratio, the clearer the image and the more vivid the colors. The lower the contrast ratio, the more blurred the image and the darker the colors. High contrast ratio is very helpful for the clarity, detail performance, and gray level performance of the image. In some text display and black-and-white image display scenarios with large black-and-white contrasts, high-contrast products have stronger image effect presentation capabilities.

[0023] The contrast ratio refers to the measurement of the different brightness levels between the brightest white and the darkest black in the bright and dark areas of an image. The larger the difference range, the higher the contrast ratio, and the smaller the difference range, the lower the contrast ratio. In the field of display screens, the contrast ratio can be expressed as the ratio of the brightness when emitting light (emission brightness) to the brightness when not emitting light (reflection brightness / black screen brightness).

[0024] When adjusting the brightness in related technologies, the contrast is not taken as the basis, and only the influence of the ambient light brightness on the display effect is considered. It can be known from the formula "(display brightness - black screen brightness) / (black screen brightness)" for calculating the contrast that since the display brightness is flexible, the main factor affecting the contrast of the display screen is the black screen brightness, and the black screen brightness of the display screen depends on its surface packaging characteristics and the ambient light brightness. However, the usage environment of the display screen is flexible and changeable, and the usage environments and packaging methods adopted by different display screens are different. In related technologies, only the ambient light brightness is considered, and the display brightness of the display screen is adjusted based on this, ignoring the influence of the packaging characteristics on the contrast. Therefore, the contrast of the display screen before and after adjustment is unstable, and further the display effect is not stable, resulting in differences in the visual experience of users in different environments.

[0025] In view of this, the embodiments of the present application propose a method for adjusting the brightness of a display screen, which can consider the packaging characteristics of different display screen surfaces and the ambient light brightness, calculate the black screen brightness, and use this as the basis to adjust the display brightness of the display screen in real time, so as to keep the contrast of the display screen constant, and further make the display effect of the display screen more stable before and after brightness adjustment.

[0026] In order to illustrate the technical solution of the present application, specific embodiments will be used for illustration below.

[0027] Figure 1 The figure shows a schematic implementation flow diagram of a method for adjusting the brightness of a display screen provided by an embodiment of the present application. This method can be applied to a terminal device and is applicable to the situation where it is necessary to improve the display effect of the display screen in different environments.

[0028] Among them, the above terminal device can be a control device of the display screen. For example, it can be an intelligent device such as a computer, a mobile phone, a tablet computer, etc. In some specific scenarios, it can refer to the controller of the display screen. The controller can be configured with a sending card, and the sending card can be used to send display data to the receiving card of the display screen, so that the receiving card controls the display area it carries to display the display data.

[0029] Specifically, the method for adjusting the brightness of the above display screen may include the following steps S101 to S105.

[0030] Step S101, obtain the current illuminance of the display screen to be adjusted.

[0031] Among them, the display screen to be adjusted is a display screen that needs to maintain a constant contrast through brightness adjustment. In the implementation manner of the present application, the display screen to be adjusted can be an LED display screen, an LCD display screen, a micro LED display screen or other types of display screens, and the present application does not make any restrictions on this.

[0032] The current illuminance refers to the illuminance of the display screen to be adjusted under the ambient light in the environment where it is located. Illuminance, that is, light intensity, is the luminous flux of visible light received per unit area, and can be used to represent the degree to which the surface of the display screen to be adjusted is illuminated.

[0033] In some embodiments of the present application, the terminal device can obtain the current illuminance collected by an illuminance meter or other sensors or devices for detecting the illuminance value on the surface of the display screen to be adjusted. In some other embodiments of the present application, the display screen to be adjusted can be photographed by a collection device such as a camera, and the obtained image can be recognized to calculate the luminous flux of each display area of the display screen to be adjusted in the image, and then the current illuminance can be determined. The present application does not limit this.

[0034] Step S102, obtain the current surface structure parameters of the display screen to be adjusted.

[0035] Among them, the current surface structure parameters can be used to characterize the surface packaging characteristics of the display screen to be adjusted, and can specifically represent the roughness, appearance color, etc. of the display screen to be adjusted.

[0036] Specifically, the above-mentioned current surface structure parameters may include the SCE (Specular Component Exclude) data and roughness of the display screen to be adjusted.

[0037] Among them, the SCE data is the data measured by excluding the specular direct reflection light, and its result is affected by the surface structure and roughness of the display screen to be adjusted. The SCE data can characterize the blackness of the display screen to be adjusted when it is blacked out. The smaller the result value of the SCE data, the blacker the display screen to be adjusted is when it is blacked out, and vice versa, the whiter the display screen to be adjusted is.

[0038] The roughness is the roughness of the surface of the display screen to be adjusted. In some embodiments, the terminal device can obtain the SCE data and SCI (Specular Component Include) data sampled by a color difference meter for the display screen to be adjusted. The SCI data is the data measured by including the specular direct reflection light, and its result can truly reflect the true color properties of the object and is not easily affected by the roughness of the surface of the display screen to be adjusted. The result of the SCE data is affected by the surface structure and roughness of the display screen to be adjusted. Therefore, according to the SCE data and the SCI data, the terminal device can determine the roughness of the display screen to be adjusted.

[0039] For example, in some embodiments, the roughness of the surface of the display screen to be adjusted can be calculated by the following formula : . Among them, and respectively represent the result value of the above SCI data and the result value of the above SCE data. The smaller the value, the rougher the surface of the display screen to be adjusted. The larger the value, the smoother the surface of the display screen to be adjusted.

[0040] In other embodiments, the terminal device may obtain the current surface structure parameter set for the display screen to be adjusted by the user according to experience.

[0041] Step S103, determine the current black screen brightness of the display screen to be adjusted according to the current illuminance and the target mapping relationship.

[0042] Specifically, the terminal device may determine the target mapping relationship according to the current surface structure parameter. The target mapping relationship can be used to characterize the mapping relationship between the black screen brightness and the illuminance of the display screen under the current surface structure parameter. This target mapping relationship can be obtained by calibrating the above display screen to be adjusted in an experimental environment, or can be obtained by calibrating other display screens with the same or similar surface structure parameters as the current surface structure parameter in the experimental environment. Among them, the surface structure parameter being similar to the current surface structure parameter may mean that the error between the surface structure parameter and the current surface structure parameter is within a preset error range.

[0043] Step S104, calculate the target display brightness for making the display screen to be adjusted in a preset contrast according to the current black screen brightness.

[0044] Among them, the preset contrast is the contrast after the brightness adjustment of the display screen to be adjusted, and can be set according to the needs of the user or the display characteristics of the display screen to be adjusted. For example, it may refer to the best contrast of the display screen to be adjusted. The target display brightness refers to the display brightness after the adjustment of the display screen to be adjusted.

[0045] Specifically, in the embodiments of the present application, the contrast of the display screen to be adjusted can be expressed as: ; where is the display brightness of the display screen, is the black screen brightness of the display screen. Based on the current black screen brightness, the preset contrast, the current black screen brightness of the display screen to be adjusted, and , the target display brightness for making the display screen to be adjusted in a preset contrast can be calculated.

[0046] Step S105, adjust the display brightness of the display screen to be adjusted to the target display brightness.

[0047] Specifically, the terminal device can send a brightness adjustment instruction to the display screen to be adjusted, and the brightness adjustment instruction carries the target display brightness. After receiving the brightness adjustment instruction, the display screen to be adjusted can parse the target display brightness and adjust the display brightness to the target display brightness. At this time, the contrast ratio of the display screen to be adjusted is the preset contrast ratio.

[0048] It should be understood that the above steps S101 to S105 can be executed cyclically according to a preset frequency, or, by detecting the illuminance in real time, re-executed when the illuminance changes, so as to keep the display screen to be adjusted at the preset contrast ratio.

[0049] Since the black screen brightness is related to the encapsulation characteristics of the display screen surface and the ambient light brightness, in the embodiments of the present application, by obtaining the current surface structure parameters and the current illuminance of the display screen to be adjusted, and according to the target mapping relationship between the black screen brightness and the illuminance under the current surface structure parameters of the display screen and the current illuminance, the current black screen brightness of the display screen to be adjusted is determined, so that the black screen brightness can be accurately calculated with reference to the encapsulation characteristics of the display screen to be adjusted, and then the contrast ratio of the display screen to be adjusted can be more accurately measured based on the black screen brightness. Therefore, according to the current black screen brightness, calculating the target display brightness that makes the display screen to be adjusted at the preset contrast ratio and adjusting the display brightness of the display screen to be adjusted to the target display brightness can make the display screen to be adjusted stably at the preset contrast ratio, and can improve the stability of the display effect of the display screen in different environments.

[0050] Moreover, since the method provided in the present application takes into account the encapsulation characteristics of the display screen to be adjusted, display screens with different encapsulation characteristics can all achieve constant control of the contrast ratio through the method provided in the present application. Therefore, the method provided in the present application has higher universality compared with the related technologies.

[0051] Specifically, Figure 2 The module schematic diagram of the display system provided in the present application is shown. The display system may include a screen detection module, an analysis module, an ambient light detection and analysis module, and an application module.

[0052] Among them, the screen detection module can be used to detect the black screen brightness and the surface structure parameters of the display screen under different ambient light illuminances. The analysis module can be used to calibrate the mapping relationship between the black screen brightness and the ambient light illuminance by combining the black screen brightness, the surface structure parameters, and the ambient light illuminance. The above ambient light detection and analysis module can be used to detect the current illuminance of the environment where the display screen to be adjusted is located. The above application module is used to adjust the brightness of the display screen to be adjusted based on the calibrated mapping relationship.

[0053] Next, in combination with Figure 2 The brightness adjustment method provided in the present application will be described.

[0054] Specifically, asFigure 3 As shown in Figure 3 , the process of calibrating the mapping relationship may include the following steps S301 to S303.

[0055] Step S301: Obtain the sample surface structure parameters of the sample display screen.

[0056] Step S302: Obtain the sample black screen brightness of the sample display screen under different sample illuminances.

[0057] Among them, the sample display screen is the display screen used for calibrating the mapping relationship, and it can be the same as or different from the display screen to be adjusted. The sample surface structure parameters can be used to characterize the surface packaging characteristics of the sample display screen, and specifically can represent the roughness, appearance color, etc. of the sample display screen. The sample illuminance refers to the illuminance of the sample display screen. The sample black screen brightness refers to the black screen brightness of the sample display screen under the corresponding sample illuminance.

[0058] Specifically, the above steps S301 and S302 can be implemented by Figure 2 the screen detection module shown in Figure 2 . The screen detection module can specifically include a sample display screen, a light source, an illuminance meter, a luminance meter, and a surface feature tester.

[0059] Among them, the light source can control the light receiving conditions of the sample display screen. Preferably, multiple light sources can be used to simulate the direction of ambient light, and the brightness of the light source can be adjusted to simulate the brightness of ambient light to ensure uniform light reception at each position of the sample display screen, thereby simulating the situation of ambient light. The above light source can select surface lights or spotlights with a color rendering index greater than 80%. It should be understood that the more uniform the layout of the ambient light, the higher the accuracy of the calibrated mapping relationship.

[0060] The illuminance meter can be set at the position to be measured on the sample display screen, flush with the surface of the sample display screen, and its measured value can form a feedback relationship with the brightness of the light source. According to the illuminance target value of the required strategy, the light source can automatically adjust the brightness so that the illuminance value at the position to be measured on the sample display screen is the same as the illuminance target value.

[0061] The luminance meter cooperates with the illuminance meter and can be used to measure the sample black screen brightness at the position to be measured on the sample display screen under a specific sample illuminance. Specifically, an illuminance interval and an increment value can be preset, the brightness of the light source can be adjusted so that the value of the illuminance meter reaches the preset illuminance within the preset illuminance interval in sequence, and the luminance meter is used to measure the black screen brightness of the sample display screen to form a mapping relationship between the black screen brightness and the illuminance of the sample display screen.

[0062] Table 1 below shows an example of the mapping relationship between the black screen brightness and the illuminance.

[0063] Table 1

[0064]

[0065] Among them, the preset illuminance range can be any range within 0 to 1000 Lux, and the increment value can be set to any value of 1 Lux or above. It should be understood that the larger the illuminance range and the smaller the single increment value, the more illuminance data and black screen brightness data there are, and the higher the subsequent analysis accuracy.

[0066] It should be noted that the above luminance meter can select any sensor, instrument or device that can measure the surface brightness value of the object to be measured.

[0067] The surface feature tester can be used to detect the surface packaging characteristics of the sample display screen. For example, it can detect the sample SCE data and sample roughness of the sample display screen. The acquisition methods of SCE data and roughness can refer to the description of the foregoing step S102, and this application will not elaborate on this.

[0068] Step S303, generate a candidate mapping relationship corresponding to the sample surface structure parameters according to the sample black screen brightness of the sample display screen under different sample illuminances.

[0069] Among them, the candidate mapping relationship is also the mapping relationship between the black screen brightness and illuminance calibrated by the sample display screen. Since the surface structure parameters of the sample display screen are sample surface structure parameters, the obtained candidate mapping relationship corresponds to the sample surface structure parameters of the sample display screen.

[0070] Specifically, the above step S303 can be implemented by Figure 2 the analysis module shown. Exemplarily, the above candidate mapping relationship can be a candidate function relationship. By fitting the sample black screen brightness of the sample display screen under different sample illuminances, a candidate function relationship with the sample illuminance as the independent variable and the sample black screen brightness as the dependent variable can be obtained. Among them, the fitting methods include but are not limited to Taylor polynomial fitting, least squares fitting, Fourier fitting or other algorithms that can achieve the fitting purpose. Specific implementation tools can select algorithm implementation tools such as Matlab and LabView.

[0071] Exemplarily, Figure 4 shows the candidate function relationship obtained by fitting the data shown in Table 1 in a schematic diagram.

[0072] Correspondingly, this candidate function relationship can be bound to the above sample surface structure parameters (such as SCE data and roughness), that is, a corresponding relationship between the function relationship of black screen brightness - illuminance and the surface structure parameters is formed.

[0073] At this time, the terminal device can obtain candidate mapping relationships, and each candidate mapping relationship is respectively used to characterize the mapping relationship between the black screen brightness and the illuminance of the sample display screen under the sample surface structure parameters. If the error between the sample surface structure parameters and the current surface structure parameters is less than or equal to the error threshold, the candidate mapping relationship is used as the target mapping relationship.

[0074] Specifically, the above error threshold can be adjusted according to the actual situation. Exemplarily, when the above sample surface structure parameters are the SCE data and roughness of the sample display screen, and the current surface structure parameters of the display screen to be adjusted are the SCE data and roughness , the above error threshold can be set to △SCE ≤ 0.3 and △K value ≤ 5%, that is and .

[0075] It should be understood that in some embodiments, multiple candidate mapping relationships can be obtained by calibrating multiple sample display screens respectively, and according to the current surface structure parameters, the candidate mapping relationships that satisfy "the error from the current surface structure parameters is less than or equal to the error threshold" are selected from the multiple candidate mapping relationships and used as the target mapping relationships. In other embodiments, as Figure 5 shown, after calibrating a single mapping relationship, it can also be detected whether the error between the sample surface structure parameters and the current surface structure parameters is less than or equal to the error threshold. If so, it can be used as the target mapping relationship. If not, it is necessary to replace the sample display screen and re - calibrate the mapping relationship until the error between the sample surface structure parameters and the current surface structure parameters is less than or equal to the error threshold.

[0076] In other words, in the embodiments of the present application, a sample display screen with an error between the sample surface structure parameters and the current surface structure parameters less than or equal to the error threshold can be used for calibration, and the mapping relationship obtained by calibration is used to adjust the brightness of the display screen to be adjusted. To exclude individual differences, the above sample display screen can also be the display screen to be adjusted itself.

[0077] It should be noted that the calibration process of the above mapping relationship can be executed on the aforementioned terminal device. At this time, the terminal device can store the mapping relationship in a preset storage location, and when it is necessary to adjust the brightness of the display screen to be adjusted, the calibrated candidate mapping relationship is called from the preset storage location. In other embodiments, the calibration process of the above mapping relationship can also be executed on other devices, and the terminal device can obtain the calibrated candidate mapping relationship of other devices.

[0078] When adjusting the brightness of the display screen, the terminal device can detect the current illuminance through the aforementioned ambient light detection and analysis module.

[0079] Specifically, the terminal device can obtain the illuminance collected by a preset number of illuminometers. Among them, the aforementioned preset number of illuminometers can be arranged equidistantly around the border of the display screen to be adjusted. Then, the average illuminance of the illuminance collected by the preset number of illuminometers can be calculated, and the average illuminance can be used as the current illuminance.

[0080] As Figure 6 shown, multiple illuminometers can be fixed around the border of the display screen to be adjusted, and the detection and sensing surface of each illuminometer can be flush with the surface of the display screen to be adjusted. The aforementioned preset number can be adjusted according to the actual situation. For example, it can be calculated according to (L is twice the perimeter of the display screen to be adjusted, in meters, [] is rounding) to obtain the required number of illuminometers, and the aforementioned preset number is obtained. Then, all the illuminometers are arranged equidistantly around the border of the display screen to be adjusted. When the display screen to be adjusted is working, all the illuminometers around the border of the display screen can run synchronously. Among them, the synchronous operation period of each illuminometer ≤ 0.5 s (that is, the sampling time difference of each illuminometer is less than or equal to 0.5 s). After a single operation cycle is completed, a set of values measured by all the illuminometers can be obtained , represents the illuminance collected by the nth illuminometer. The current illuminance is obtained through the formula . In this way, the detected illuminance can be made more reliable.

[0081] Correspondingly, the terminal device can pass through Figure 2 The application module shown determines the target display brightness according to the target mapping relationship and the current illuminance, and adjusts the display brightness of the display screen to be adjusted in real time to achieve the purpose of a constant preset contrast ratio.

[0082] Combined with the foregoing description, the present application also proposes a display system, which can include a terminal device and a display screen to be adjusted. Among them, the terminal device can be used to adjust the display brightness of the display screen to be adjusted to the target display brightness according to the Figures 1 to 6 Brightness adjustment method shown.

[0083] More specifically, as Figure 7As shown, the above terminal device can be a controller in a display system. The display system can further include a receiving card and an illuminometer. Before the display screen to be adjusted leaves the factory, the target mapping relationship can be calibrated and stored in the memory of the display screen to be adjusted. The memory can be a storage device such as EEPROM or Flash. When the brightness of the display screen to be adjusted needs to be adjusted, the receiving card can read the target mapping relationship stored in the memory of the display screen to be adjusted and send it to the controller. The controller can obtain the black screen brightness of the display screen to be adjusted under the current illuminance based on the current illuminance collected by the illuminometer and the target mapping relationship sent by the receiving card. Then, through the foregoing formula The display brightness is adjusted in real time so that the display screen to be adjusted remains constant at a preset contrast ratio after adjustment. More specifically, after calculating the target display brightness, the controller can send the target display brightness to the receiving card, and the receiving card controls the display brightness of the display screen to be adjusted.

[0084] In the embodiments of the present application, considering the relationship between the surface packaging characteristics of different display screens, illuminance, and black screen brightness, the contrast ratio of the display screen can be kept constant during the working process, so that the display effect of the display screen remains stable under different environmental conditions, and it can be adapted to display screens with different packaging structures.

[0085] It should be noted that for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present application is not limited by the described action sequence, because according to the present application, certain steps can be performed in other sequences.

[0086] As Figure 8 shown is a schematic structural diagram of a display brightness adjustment device 800 provided by an embodiment of the present application. The display brightness adjustment device 800 of the display screen is configured on a terminal device.

[0087] Specifically, the display brightness adjustment device 800 of the display screen can include:

[0088] An illuminance acquisition unit 801, configured to acquire the current illuminance of the display screen to be adjusted;

[0089] A surface structure parameter acquisition unit 802, configured to acquire the current surface structure parameters of the display screen to be adjusted;

[0090] A black screen brightness determination unit 803, configured to determine the current black screen brightness of the display screen to be adjusted according to the current illuminance and the target mapping relationship, where the target mapping relationship is used to represent the mapping relationship between the black screen brightness and the illuminance of the display screen under the current surface structure parameters;

[0091] A brightness calculation unit 804, configured to calculate a target display brightness for making the display screen to be adjusted reach a preset contrast ratio according to the current black screen brightness;

[0092] A brightness adjustment unit 805, configured to adjust the display brightness of the display screen to be adjusted to the target display brightness.

[0093] In some embodiments of the present application, the above illuminance acquisition unit 801 may specifically be configured to: acquire illuminance collected by a preset number of illuminometers, where the preset number of illuminometers are arranged at equal intervals around the border of the display screen to be adjusted; calculate an average illuminance of the illuminance collected by the preset number of illuminometers; and use the average illuminance as the current illuminance.

[0094] In some embodiments of the present application, the above current surface structure parameter may include SCE data and roughness of the display screen to be adjusted; the above surface structure parameter acquisition unit 802 may specifically be configured to: acquire SCE data and SCI data obtained by sampling the display screen to be adjusted by a color difference meter; and determine the roughness of the display screen to be adjusted according to the SCE data and the SCI data.

[0095] In some embodiments of the present application, the above display screen brightness adjustment device 800 may further include an application unit, configured to: acquire candidate mapping relationships, each of the candidate mapping relationships is respectively used to represent a mapping relationship between black screen brightness and illuminance of a sample display screen under sample surface structure parameters; and if an error between the sample surface structure parameters and the current surface structure parameters is less than or equal to an error threshold, use the candidate mapping relationship as the target mapping relationship.

[0096] In some embodiments of the present application, the above display screen brightness adjustment device 800 may further include a calibration unit, configured to: acquire sample surface structure parameters of a sample display screen; acquire sample black screen brightness of the sample display screen under different sample illuminances; and generate a candidate mapping relationship corresponding to the sample surface structure parameters according to the sample black screen brightness of the sample display screen under different sample illuminances.

[0097] In some embodiments of the present application, the above candidate mapping relationship may be a candidate function relationship; the above calibration unit may specifically be configured to: perform fitting according to the sample black screen brightness of the sample display screen under different sample illuminances to obtain a candidate function relationship with the sample illuminance as an independent variable and the sample black screen brightness as a dependent variable.

[0098] It should be noted that, for the convenience and conciseness of description, the specific working process of the above display screen brightness adjustment device 800 may refer to Figures 1 to 7 the corresponding process of the method, which will not be elaborated herein.

[0099] As Figure 9 shown, it is a schematic diagram of a terminal device provided by an embodiment of the present application. The terminal device 9 may include: a processor 90, a memory 91, and a computer program 92 stored in the memory 91 and executable on the processor 90, such as a brightness adjustment program for a display screen. When the processor 90 executes the computer program 92, the steps in the above-mentioned embodiments of the brightness adjustment method for each display screen are implemented, such as Figure 1 the steps S101 to S105 shown. Alternatively, when the processor 90 executes the computer program 92, the functions of each module / unit in the above-mentioned device embodiments are implemented, such as Figure 8 the illuminance acquisition unit 801, the surface structure parameter acquisition unit 802, the black screen brightness determination unit 803, the brightness calculation unit 804, and the brightness adjustment unit 805 shown.

[0100] The computer program may be divided into one or more modules / units. The one or more modules / units are stored in the memory 91 and executed by the processor 90 to complete the present application. The one or more modules / units may be a series of computer program instruction segments capable of performing specific functions, and these instruction segments are used to describe the execution process of the computer program in the terminal device.

[0101] For example, the computer program may be divided into: an illuminance acquisition unit, a surface structure parameter acquisition unit, a black screen brightness determination unit, a brightness calculation unit, and a brightness adjustment unit. The specific functions of each unit are as follows: The illuminance acquisition unit is used to acquire the current illuminance of the display screen to be adjusted; the surface structure parameter acquisition unit is used to acquire the current surface structure parameters of the display screen to be adjusted; the black screen brightness determination unit is used to determine the current black screen brightness of the display screen to be adjusted according to the current illuminance and the target mapping relationship, where the target mapping relationship is used to represent the mapping relationship between the black screen brightness and the illuminance of the display screen under the current surface structure parameters; the brightness calculation unit is used to calculate the target display brightness that makes the display screen to be adjusted in a preset contrast according to the current black screen brightness; the brightness adjustment unit is used to adjust the display brightness of the display screen to be adjusted to the target display brightness.

[0102] The terminal device may include, but is not limited to, a processor 90 and a memory 91. Those skilled in the art can understand that Figure 9 this is only an example of the terminal device and does not constitute a limitation on the terminal device. It may include more or fewer components than shown in the figure, or combine certain components, or different components. For example, the terminal device may further include input / output devices, network access devices, a bus, etc.

[0103] The so-called processor 90 may be a Central Processing Unit (CPU), or may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field-Programmable Gate Arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0104] The memory 91 may be an internal storage unit of the terminal device, such as the hard disk or memory of the terminal device. The memory 91 may also be an external storage device of the terminal device, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, etc. equipped on the terminal device. Further, the memory 91 may also include both the internal storage unit and the external storage device of the terminal device. The memory 91 is used to store the computer program and other programs and data required by the terminal device. The memory 91 may also be used to temporarily store the data that has been output or will be output.

[0105] It should be noted that for the convenience and brevity of description, the structure of the above terminal device may also refer to the specific description of the structure in the method embodiment, which will not be elaborated here.

[0106] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the above division of each functional unit and module is used as an example. In actual applications, the above functions can be allocated to different functional units and modules according to needs, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment can be integrated into a processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit. In addition, the specific names of each functional unit and module are only for the convenience of mutual distinction and do not limit the protection scope of the present application. The specific working process of the units and modules in the above system can refer to the corresponding process in the foregoing method embodiment, which will not be elaborated here.

[0107] In the above embodiments, the descriptions of the various embodiments each have their own emphasis. For parts not detailed or recorded in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0108] Those of ordinary skill in the art will realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0109] In the embodiments provided in this application, it should be understood that the disclosed device / terminal device and method can be implemented in other ways. For example, the device / terminal device embodiments described above are merely illustrative. For example, the division of the modules or units is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces, and the indirect couplings or communication connections of the devices or units can be in electrical, mechanical or other forms.

[0110] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they can be located in one place, or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0111] In addition, the functional units in the various embodiments of this application can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated units can be implemented in the form of hardware or in the form of software functional units.

[0112] When the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, to implement all or part of the processes in the above-described embodiment methods of this application, it can also be completed by instructing relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, the steps of the above-described various method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in the form of source code, object code, executable file, or some intermediate form, etc. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disc, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal, and software distribution medium, etc. It should be noted that the content included in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice within the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium does not include electrical carrier signals and telecommunication signals.

[0113] The above-described embodiments are only used to illustrate the technical solutions of this application, rather than to limit them; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A method for adjusting the brightness of a display screen, characterized in that, Including: Obtain the current illuminance of the display screen to be adjusted; Obtain the current surface structure parameters of the display screen to be adjusted, where the current surface structure parameters include the SCE data and roughness of the display screen to be adjusted; Determine the current black screen brightness of the display screen to be adjusted according to the current illuminance and the target mapping relationship, where the target mapping relationship is used to characterize the mapping relationship between the black screen brightness and the illuminance of the display screen under the current surface structure parameters; Calculate the target display brightness that makes the display screen to be adjusted in a preset contrast ratio according to the current black screen brightness; Adjust the display brightness of the display screen to be adjusted to the target display brightness.

2. The brightness adjustment method of the display screen according to claim 1, characterized in that The obtaining of the current illuminance of the display screen to be adjusted includes: Obtain the illuminance collected by a preset number of illuminance meters, and the preset number of illuminance meters are arranged equidistantly around the frame of the display screen to be adjusted; Calculate the average illuminance of the illuminance collected by the preset number of illuminance meters; Take the average illuminance as the current illuminance.

3. The method for adjusting the brightness of a display screen according to claim 1, wherein The obtaining of the current surface structure parameters of the display screen to be adjusted includes: Obtain the SCE data and SCI data sampled by a color difference meter for the display screen to be adjusted; Determine the roughness of the display screen to be adjusted according to the SCE data and the SCI data.

4. The method for adjusting the brightness of a display screen according to any one of claims 1 to 3, characterized in that, Before determining the current black screen brightness of the display screen to be adjusted according to the current illuminance and the target mapping relationship, the brightness adjustment method further includes: Obtain candidate mapping relationships, and each candidate mapping relationship is respectively used to characterize the mapping relationship between the black screen brightness and the illuminance of the sample display screen under the sample surface structure parameters; If the error between the sample surface structure parameters and the current surface structure parameters is less than or equal to the error threshold, then use the candidate mapping relationship as the target mapping relationship.

5. The brightness adjustment method of the display screen according to claim 4, characterized in that, The obtaining of the candidate mapping relationships includes: Obtain the sample surface structure parameters of the sample display screen; Obtain the sample black screen brightness of the sample display screen under different sample illuminances; Generate a candidate mapping relationship corresponding to the sample surface structure parameters according to the sample black screen brightness of the sample display screen under different sample illuminances.

6. The method for adjusting the brightness of a display screen according to claim 5, wherein The candidate mapping relationship is a candidate functional relationship; The generating of a candidate mapping relationship corresponding to the sample surface structure parameters according to the sample black screen brightness of the sample display screen under different sample illuminances includes: Perform fitting according to the sample black screen brightness of the sample display screen under different sample illuminances to obtain a candidate functional relationship with the sample illuminance as the independent variable and the sample black screen brightness as the dependent variable.

7. A brightness adjustment device for a display screen, characterized in that, Including: An illuminance obtaining unit, configured to obtain the current illuminance of the display screen to be adjusted; A surface structure parameter obtaining unit, configured to obtain the current surface structure parameters of the display screen to be adjusted, where the current surface structure parameters include the SCE data and roughness of the display screen to be adjusted; A black screen brightness determining unit, configured to determine the current black screen brightness of the display screen to be adjusted according to the current illuminance and the target mapping relationship, where the target mapping relationship is used to characterize the mapping relationship between the black screen brightness and the illuminance of the display screen under the current surface structure parameters; A brightness calculation unit, configured to calculate a target display brightness for making the display screen to be adjusted reach a preset contrast ratio according to the current black screen brightness; A brightness adjustment unit, configured to adjust the display brightness of the display screen to be adjusted to the target display brightness.

8. A terminal device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, the steps of the brightness adjustment method according to any one of claims 1 to 6 are implemented.

9. A display system, characterized in that, It includes a terminal device and a display screen to be adjusted; The terminal device is configured to adjust the display brightness of the display screen to be adjusted to the target display brightness according to the brightness adjustment method according to any one of claims 1 to 6.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, the steps of the brightness adjustment method according to any one of claims 1 to 6 are implemented.

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