Brightness adjustment method and apparatus, and display device and computer-readable storage medium

Abstract

The present application belongs to the technical field of display. Disclosed are a brightness adjustment method and apparatus, and a display device and a computer-readable storage medium. The brightness adjustment method is applied to a display device, and comprises: collecting a reference ambient-light increment of a display device by means of an illumination sensor; when the display device outputs a display picture normally, acquiring the current display brightness of the display device; determining the current ambient-light increment on the basis of the current display brightness and the reference ambient-light increment; collecting the current ambient-light intensity by means of the illumination sensor, and determining the actual ambient-light intensity on the basis of the current ambient-light intensity and the current ambient-light increment; and determining a target dimming parameter on the basis of the actual ambient-light intensity and a preset value correspondence table, and adjusting the brightness of the display device on the basis of the target dimming parameter.

Description

Brightness adjustment method, device, display device and computer-readable storage medium

[0001] Related applications

[0002] This application claims priority to Chinese patent application No. 202410317477.6 filed on March 19, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of display technology, and in particular to a brightness adjustment method, apparatus, display device, and computer-readable storage medium. Background Art

[0004] In order to adapt to the needs of users in different environments, most display devices generally have the function of adjusting brightness, including manual brightness adjustment and automatic brightness adjustment. Manual brightness adjustment requires users to set it themselves, which is not convenient in most cases. In contrast, automatic brightness adjustment can significantly improve the user experience.

[0005] At present, the related technology often uses brightness sensors to assist in achieving automatic adjustment of screen brightness. However, as the brightness of the screen itself changes, the actual effect of automatic adjustment of screen brightness based on brightness sensors is not ideal, and this method still has major technical defects. Summary of the Invention

[0006] The main purpose of this application is to provide a brightness adjustment method, device, display device and computer-readable storage medium, aiming to optimize the automatic brightness adjustment function of the display device and avoid the brightness changes of the screen itself affecting the automatic brightness adjustment effect.

[0007] To achieve the above objectives, the present application provides a brightness adjustment method, which is applied to a display device and includes:

[0008] collecting a reference ambient light increment of the display device by a light sensor;

[0009] When the display device outputs a display image normally, obtaining the current display brightness of the display device;

[0010] determining a current ambient light increment according to the current display brightness and the reference ambient light increment;

[0011] collecting the current ambient light intensity by the light sensor, and determining the real ambient light intensity according to the current ambient light intensity and the current ambient light increment;

[0012] A target dimming parameter is determined according to the actual ambient light intensity and a preset value correspondence table, and the brightness of the display device is adjusted based on the target dimming parameter.

[0013] In one embodiment, collecting the reference ambient light increment of the display device by using a light sensor includes:

[0014] When the display device does not output a display image, collecting the original ambient light intensity by the light sensor;

[0015] When the display device outputs a display image based on a reference display brightness, collecting a reference ambient light intensity by the light sensor;

[0016] A difference value obtained by subtracting the original ambient light intensity from the reference ambient light intensity is used as a reference ambient light increment of the display device.

[0017] In one embodiment, the reference display brightness includes a maximum image brightness and a maximum backlight brightness, and the reference ambient light intensity includes a maximum ambient light intensity; and when the display device outputs a display image based on the reference display brightness, collecting the reference ambient light intensity by the light sensor includes:

[0018] In a case where the display device outputs a display picture based on the maximum image brightness and the maximum backlight brightness, the maximum ambient light intensity is collected by the light sensor.

[0019] In one embodiment, the current display brightness includes current image brightness; and determining the current ambient light increment based on the current display brightness and the reference ambient light increment includes:

[0020] The current ambient light increment is determined according to the current image brightness and the reference ambient light increment.

[0021] In one embodiment, the current display brightness further includes a current backlight brightness; and determining the current ambient light increment based on the current display brightness and the reference ambient light increment includes:

[0022] The current ambient light increment is determined according to the current image brightness, the current backlight brightness, and the reference ambient light increment.

[0023] In one embodiment, the display screen of the display device includes multiple display areas, the current ambient light increment includes the sum of the current ambient light increments of the respective display areas; and determining the current ambient light increment based on the current display brightness and the reference ambient light increment includes:

[0024] The sum of the current ambient light increments of each display area is determined according to the current display brightness of each display area and the reference ambient light increment of each display area.

[0025] In one embodiment, the preset value correspondence table includes a first value correspondence table and a second value correspondence table, the first value correspondence table is a value correspondence table of ambient light intensity and backlight brightness, and the second value correspondence table is a value correspondence table of backlight brightness and dimming parameters; determining the target dimming parameter according to the actual ambient light intensity and the preset value correspondence table includes:

[0026] generating a corresponding relationship formula including ambient light intensity and dimming parameters based on the first value corresponding table and the second value corresponding table;

[0027] Substitute the actual ambient light intensity into the corresponding relationship to obtain the target dimming parameter.

[0028] In one embodiment, the display screen of the display device includes multiple display areas; and determining the current ambient light increment based on the current display brightness and the reference ambient light increment includes:

[0029] Obtaining a first ratio of a current backlight brightness of each of the display areas to a preset reference backlight brightness;

[0030] Obtaining a second ratio of the current image brightness of each of the display areas to the preset reference image brightness;

[0031] A product obtained by multiplying the first ratio, the second ratio, and the reference ambient light increment of each display area is determined as the current ambient light increment of each display area.

[0032] In one embodiment, collecting the current ambient light intensity by the light sensor and determining the real ambient light intensity according to the current ambient light intensity and the current ambient light increment includes:

[0033] A difference value obtained by subtracting the sum of the current ambient light increments of each display area from the current ambient light intensity is determined as the real ambient light intensity.

[0034] In addition, to achieve the above-mentioned purpose, the present application further provides a brightness adjustment device, which is applied to a display device and includes:

[0035] An acquisition module, configured to acquire a reference ambient light increment of the display device through a light sensor;

[0036] an acquisition module, configured to acquire the current display brightness of the display device when the display device outputs a display image normally;

[0037] a processing module, configured to determine a current ambient light increment based on the current display brightness and the reference ambient light increment;

[0038] The acquisition module is further configured to acquire the current ambient light intensity through the light sensor, and the processing module is further configured to determine the actual ambient light intensity based on the current ambient light intensity and the current ambient light increment;

[0039] The processing module is further configured to determine a target dimming parameter according to the actual ambient light intensity and a preset value correspondence table, and adjust the brightness of the display device based on the target dimming parameter.

[0040] In addition, to achieve the above-mentioned purpose, the present application also provides a display device, which includes: a memory, a processor, and a computer program stored in the memory and runnable on the processor, and when the computer program is executed by the processor, the steps of the brightness adjustment method described above are implemented.

[0041] In addition, to achieve the above-mentioned purpose, the present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the brightness adjustment method described above are implemented.

[0042] The present application proposes a brightness adjustment method, apparatus, display device and computer-readable storage medium. In the brightness adjustment method, a reference ambient light increment of the display device is first collected by a light sensor, that is, a reference object for determining the degree of influence of screen luminescence on ambient light collection is determined; when the display device outputs a display image normally, the current display brightness of the display device is obtained; then, the current ambient light increment is determined based on the current display brightness and the reference ambient light increment, that is, the actual influence of the current screen luminescence of the display device on ambient light collection is determined; then, the current ambient light intensity is collected by the light sensor, and the real ambient light intensity is determined based on the current ambient light intensity and the current ambient light increment, that is, a pure ambient light intensity that is not affected by screen luminescence is obtained; finally, a target dimming parameter is determined based on the real ambient light intensity and a preset numerical correspondence table, and the brightness of the display device is adjusted based on the target dimming parameter, so as to avoid the brightness change of the screen itself affecting the automatic brightness adjustment effect, thereby overcoming the defects in the relevant technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only part of the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0044] FIG1 is a schematic diagram of a flow chart of a brightness adjustment method provided in an embodiment of the present application;

[0045] FIG2 is a schematic diagram of a system architecture of a display device involved in a brightness adjustment method provided in an embodiment of the present application;

[0046] FIG3 is a schematic diagram of the front structure of a display device involved in a brightness adjustment method provided in an embodiment of the present application;

[0047] FIG4 is a schematic diagram of an installation environment of a display device involved in a brightness adjustment method provided in an embodiment of the present application;

[0048] FIG5 is a schematic diagram showing the corresponding relationship between ambient light intensity and screen backlight brightness involved in a brightness adjustment method provided in an embodiment of the present application;

[0049] FIG6 is a schematic diagram of display screen partitions and displayed images involved in a brightness adjustment method provided in an embodiment of the present application;

[0050] FIG7 is a schematic structural diagram of a brightness adjustment device provided in an embodiment of the present application;

[0051] FIG8 is a schematic structural diagram of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0052] In the following description, specific details such as specific system structures and technologies are provided for illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the embodiments of the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the embodiments of the present application.

[0053] It should be noted that although a logical order is shown in the flowcharts, in some cases, the steps shown or described may be performed in a different order than that shown in the flowcharts. The terms "first," "second," and the like in the specification, claims, and drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0054] It should also be understood that references to "one embodiment" or "some embodiments" in the description of the embodiments of the present application mean that one or more embodiments of the embodiments of the present application include specific features, structures, or characteristics described in conjunction with the embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in other embodiments," etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and their variations all mean "including but not limited to," unless otherwise specifically emphasized.

[0055] In order to adapt to users' viewing needs in different environments, most display devices generally have the function of adjusting brightness, including manual brightness adjustment and automatic brightness adjustment. Manual brightness adjustment requires users to set it themselves, which is not convenient in most cases. Relatively speaking, automatic brightness adjustment can significantly improve the user experience.

[0056] For example, traditional TVs require manual adjustment of screen brightness. At night, if the viewing environment is dim, setting the screen brightness too high can cause glare and discomfort. If the screen brightness is lowered to a suitable level, the picture will appear dim during daytime viewing, making it difficult to see clearly in brighter ambient light.

[0057] In order to overcome the defects in the above-mentioned scenarios, there are new televisions in the related art that have added electronic brightness sensors. The ambient light brightness is collected through the TV software, and the screen brightness is adjusted in real time according to the changes in the collected values ​​to achieve a better user experience. However, although there are products on the market that have realized the above-mentioned automatic screen brightness control function, the actual effect is not ideal. The key reason is that the sensor cannot obtain ideal and accurate ambient light values. This is because the ambient light is "polluted" by the screen light, which in turn produces the following adverse effects: when the environment does not change (the ambient light does not change), the screen brightness changes with the brightness of the TV picture. Due to the above-mentioned changes in the brightness of the screen, the image presentation is distorted. For example, at a certain moment, the screen brightness decreases following a dark scene in a movie, which makes the dark picture appear darker, affecting the accurate presentation of the movie.

[0058] Based on this, the embodiments of the present application provide a brightness adjustment method, device, display device and computer-readable storage medium. In the brightness adjustment method, the reference ambient light increment of the display device is first collected by a light sensor, that is, a reference object for determining the degree of influence of the screen luminescence on the ambient light collection is determined; when the display device outputs the display image normally, the current display brightness of the display device is obtained; then the current ambient light increment is determined based on the current display brightness and the reference ambient light increment, that is, the actual influence of the current screen luminescence of the display device on the ambient light collection is determined; then the current ambient light intensity is collected by the light sensor, and the real ambient light intensity is determined based on the current ambient light intensity and the current ambient light increment, that is, the pure ambient light intensity that is not affected by the screen luminescence is obtained; finally, the target dimming parameter is determined based on the real ambient light intensity and the preset numerical correspondence table, and the brightness of the display device is adjusted based on the target dimming parameter, so as to avoid the brightness change of the screen itself affecting the automatic brightness adjustment effect, thereby overcoming the defects in the related technology.

[0059] The brightness adjustment method, apparatus, display device, and computer-readable storage medium provided in the embodiments of the present application are specifically described through the following embodiments. First, the brightness adjustment method in the embodiments of the present application is described.

[0060] An embodiment of the present application provides a brightness adjustment method. Referring to Figure 1, Figure 1 is a flow chart of a brightness adjustment method provided in an embodiment of the present application. The brightness adjustment method can be applied to a display device. As shown in Figure 1, the brightness adjustment method provided in this embodiment includes steps S10 to S50.

[0061] Step S10: collecting a reference ambient light increment of the display device through a light sensor.

[0062] In this embodiment, the display device may include an electronic system as shown in Figure 2, which includes: 1) a display screen unit: used to output image images, which may include two sub-units, namely, an "image display sub-unit" and a "screen backlight sub-unit", or may include one or more other sub-units, as long as it can have both image display function and screen backlight function; 2) an image processing and output unit: used to output electronic data signals of images for display by the display screen unit, and it also has the ability to extract image images in real time; 3) a light sensor unit: used to obtain light intensity information of the environment; 4) a processing control center unit: the processing center of the electronic system, responsible for data analysis and processing of the system, overall business logic control, etc.

[0063] As an example, the display device in this embodiment can be a television as shown in Figure 3. Considering that the fundamental reason why the light sensor cannot collect reliable ambient light values ​​is that the screen light pollutes the ambient light, when it is installed in the environment as shown in Figure 4, the environment is relatively fixed. At this time, the light emitted by the display screen produces diffuse reflection on the surfaces of various objects in the environment. The impact of such diffuse reflection on the sensor readings is also relatively fixed. Therefore, if the screen broadcasts a fixed picture and no other light sources change, the ambient light intensity detected by the light sensor of the display device is also stable. The ambient light intensity is recorded and then compared with the ambient light intensity when the screen is not broadcasting a picture, so as to obtain the impact of the screen broadcasting the picture on the ambient light collection, that is, the reference ambient light increment.

[0064] In some embodiments, the above step S10 may include:

[0065] Step S101 : When the display device does not output a display image, the original ambient light intensity is collected by the light sensor.

[0066] Step S102 : When the display device outputs a display image based on a reference display brightness, a reference ambient light intensity is collected by the light sensor.

[0067] Step S103 : Subtracting the original ambient light intensity from the reference ambient light intensity to obtain a difference value, which is used as a reference ambient light increment of the display device.

[0068] In this embodiment, the ambient light intensity of the display device when it is not outputting a display image and when it is outputting a display image based on a reference display brightness can be collected through a light sensor, so as to know the degree of influence of the display image output by the display device on the ambient light collection. Specifically, the display device can be kept in a black screen state (i.e., no display image is output), and the original ambient light intensity at this time is collected. Then, the display device can be kept in a bright screen state based on the reference display brightness, and the reference ambient light intensity at this time is collected after the screen is kept bright. The result obtained by subtracting the original ambient light intensity from the reference ambient light intensity is the reference ambient light increment when the display device collects the ambient light intensity through the light sensor in this environment, that is, when the display device outputs a display image based on the reference display brightness, the diffuse reflection of its screen light on the surfaces of various objects in the environment affects the reading collected by the light sensor.

[0069] It can be understood that the reference ambient light increment obtained in this embodiment is applicable to the situation where the position of the display device does not change substantially, and the positions of other objects in the environment in which the display device is located do not change substantially.

[0070] As an example, the reference display brightness includes the maximum image brightness and the maximum backlight brightness, and the reference ambient light intensity includes the maximum ambient light intensity; the above step S102 may specifically include: when the display device outputs a display image based on the maximum image brightness and the maximum backlight brightness, collecting the maximum ambient light intensity through the light sensor.

[0071] In this embodiment, the display device can be kept in a 100% screen-on state (i.e., image brightness 100%, backlight brightness 100%), and the reference ambient light intensity at this time is collected. The result obtained by subtracting the original ambient light intensity from the reference ambient light intensity is the reference ambient light increment of the display device in this environment. That is, when the display device is kept in a 100% screen-on state, the diffuse reflection generated by the screen light on the surfaces of various objects in the environment affects the sensor readings. This embodiment only uses the maximum image brightness and maximum backlight brightness as examples for illustration. The reference display brightness can also be other known preset values, and the preset values ​​of the reference image brightness and reference backlight brightness are not necessarily required to be consistent, for example: (image brightness 80%, backlight brightness 50%), (image brightness 33%, backlight brightness 68%), (image brightness 50%, backlight brightness 0%), etc. How to set the preset reference image brightness and reference backlight brightness, and whether to set the reference backlight brightness can be determined according to actual conditions, and this embodiment does not impose any restrictions on this.

[0072] Step S20 : ​​When the display device outputs a display image normally, obtain the current display brightness of the display device.

[0073] In this embodiment, the premise for adjusting the backlight brightness is to first obtain the current display brightness of the display screen. The current display brightness can be transmitted to the processing control center through the display screen. By comparing the current display brightness with the reference display brightness when collecting the reference ambient light increment, it can be known how much the current display brightness affects the ambient light intensity collection relative to the reference display brightness.

[0074] Step S30 : determining a current ambient light increment according to the current display brightness and the reference ambient light increment.

[0075] In this embodiment, after the current display brightness is acquired, it can be compared with the reference object obtained in the above steps to determine the impact of the current screen luminescence on the sensor collection readings.

[0076] As an example, the current display brightness includes the current image brightness; the above step S30 specifically includes: determining the current ambient light increment according to the current image brightness and the reference ambient light increment.

[0077] In this embodiment, only the impact of image brightness on ambient light collection is considered. The current image brightness refers to the percentage of the luminous intensity of the current display screen relative to the reference display screen (which can be directly obtained through the built-in software of the display device). The current image brightness is multiplied by the reference ambient light increment, and the product obtained is the current ambient light increment, that is, the impact of the diffuse reflection generated by the current display screen light on the surfaces of various objects in the environment on the readings collected by the light sensor.

[0078] As an example, the current display brightness may include not only the current image brightness but also the current backlight brightness; then the above step S30 specifically includes: determining the current ambient light increment based on the current image brightness, the current backlight brightness and the reference ambient light increment.

[0079] In this embodiment, in addition to the image brightness, the impact of the backlight brightness on the ambient light collection is also considered. Therefore, it is also necessary to obtain the percentage of the current screen backlight's luminous intensity relative to the reference screen backlight (which can also be obtained directly through the built-in software of the display device). The current image brightness, the current backlight brightness and the reference ambient light increment are multiplied together, and the product obtained is the current ambient light increment, that is, the impact of the diffuse reflection generated by the current display screen's light on the surfaces of various objects in the environment on the readings collected by the light sensor.

[0080] Step S40 : collecting the current ambient light intensity through the light sensor, and determining the real ambient light intensity according to the current ambient light intensity and the current ambient light increment.

[0081] In this embodiment, when the current ambient light intensity collected by the light sensor in the current state and the impact of the screen light on the light sensor reading, that is, the current ambient light increment, are known, the real ambient light intensity that is not contaminated by the screen light can be obtained. Specifically, the difference obtained by subtracting the current ambient light increment from the current ambient light intensity can be used as the real ambient light intensity.

[0082] It's understandable that when the screen remains black and has no image, the original ambient light intensity captured is the value uncontaminated by screen light. When the screen is outputting an image, the current ambient light intensity captured equals the original ambient light intensity + the current ambient light increment entering the sensor after diffuse reflection from the screen light. Therefore, the true ambient light intensity = current ambient light intensity - current ambient light increment.

[0083] Step S50 , determining a target dimming parameter according to the actual ambient light intensity and a preset value correspondence table, and adjusting the brightness of the display device based on the target dimming parameter.

[0084] In this embodiment, the preset value correspondence table includes a first value correspondence table and a second value correspondence table, the first value correspondence table is a value correspondence table of ambient light intensity and backlight brightness, and the second value correspondence table is a value correspondence table of backlight brightness and dimming parameters; the above step S50 includes:

[0085] Step S51: generating a corresponding relationship between ambient light intensity and dimming parameters based on the first value corresponding table and the second value corresponding table.

[0086] Step S52: Substitute the actual ambient light intensity into the corresponding relationship to obtain a target dimming parameter.

[0087] It should be noted that the first value correspondence table in this embodiment can be a corresponding value table of ambient light intensity and screen backlight brightness provided by professional image quality personnel, and its relationship line graph is shown in Figure 5. Based on this relationship, the fitting function L of ambient light intensity and screen backlight brightness can be obtained. panel =f1(L), where L panel is the illumination intensity of the screen backlight, L is the pure ambient light intensity, and f1 is the first fitting function designed based on the first numerical correspondence table of the two. In addition, a second numerical correspondence table of the screen backlight brightness and the dimming parameters set under the screen backlight driver can be obtained through actual measurement. Combining the first numerical correspondence table and the second numerical correspondence table, the corresponding relationship between the dimming parameters and the ambient light intensity can be generated: Y=f2(L panel )=f2(f1(L)), where Y is the dimming parameter set under the screen backlight driver, and f2 is the second fitting function designed and generated according to the second numerical correspondence table; it can be seen from this corresponding relationship that when the real ambient light intensity that is not affected by the screen light is known, the product of the real ambient light intensity, the first fitting function and the second fitting function can be regarded as the target dimming parameter to be finally set for the screen backlight driver.

[0088] In this embodiment, a brightness adjustment method is provided, which first collects the reference ambient light increment of the display device through the light sensor, that is, determines the reference object of the degree of influence of the screen luminescence on the ambient light collection; when the display device outputs the display image normally, obtains the current display brightness of the display device; then determines the current ambient light increment based on the current display brightness and the reference ambient light increment, that is, determines the actual influence of the current screen luminescence of the display device on the ambient light collection; then collects the current ambient light intensity through the light sensor, and determines the real ambient light intensity based on the current ambient light intensity and the current ambient light increment, that is, obtains the pure ambient light intensity that is not affected by the screen luminescence; finally, determines the target dimming parameter based on the real ambient light intensity and the preset numerical correspondence table, and adjusts the brightness of the display device based on the target dimming parameter, thereby avoiding the brightness change of the screen itself affecting the automatic brightness adjustment effect, thereby overcoming the defects in the related art.

[0089] In some embodiments, the display screen of the display device includes multiple display areas, and the current ambient light increment includes the sum of the current ambient light increments of each display area; the above step S30 may also include: determining the sum of the current ambient light increments of each display area based on the current display brightness of each display area and the reference ambient light increment of each display area.

[0090] It should be noted that the image brightness and backlight brightness in the above embodiment can be regarded as directly collecting the average data of the entire display screen. For a display screen of a larger size, the display screen can be divided into several areas before performing the above steps to obtain more accurate target dimming parameters.

[0091] As an example, as shown in Figure 6, the display screen can be divided into 16 areas, with each area independently outputting a 100% white image signal, and the screen backlight brightness is controlled at 100%. Using the light sensor, we can obtain the reference ambient light reading increment generated by each area. The accumulation of all these increments gives us the reference increment value for the impact of the entire screen on the ambient light reading. Furthermore, when outputting a regular image, we simply divide the image into the same number of areas and calculate the image brightness value for each area. Combined with the current screen backlight brightness, we can calculate the ambient light reading increment generated by that area. By calculating and summing the ambient light reading increments for all areas, we obtain the total ambient light reading increment. This yields the current raw ambient light intensity value = sensor light intensity reading - the aforementioned total ambient light reading increment.

[0092] As an example, in a certain environment, L0 is the reading of the light sensor when the display screen does not output the picture (black screen); L1 to L nIt is the light sensor reading when the screen is divided into n areas, each area outputs a 100% white image signal, and the screen backlight brightness is controlled at 100%. Therefore, the light sensor reading increment value generated by each area (100% white image signal and screen backlight brightness is 100%) is: ΔL n =L n -L0, ΔL n That is, the reference ambient light increment of each display area.

[0093] In this embodiment, the above step S30 may further include:

[0094] Step S311 , obtaining a first ratio of the current backlight brightness of each display area to a preset reference backlight brightness.

[0095] Step S312: Obtain a second ratio of the current image brightness of each display area to the preset reference image brightness.

[0096] Step S313 : Determine the product obtained by multiplying the first ratio, the second ratio, and the reference ambient light increment of each display area as the current ambient light increment of each display area.

[0097] As an example, in the above environment, if the ambient light changes (for example, the sunlight weakens), when the screen outputs a picture, the light sensor reading is LC, the system intercepts the display picture, and calculates the brightness value of each small picture in several areas that are the same as the display screen in the above embodiment, from B1 to B n , and the brightness value of a 100% white field image of the same size (small image size) is calculated as B0 (i.e., the reference image brightness of each display area), and the first ratio of the current screen backlight brightness to the reference backlight brightness is BL, and then the impact of each small image on the sensor reading can be obtained as:

[0098] In this embodiment, the step S40 may further include: subtracting the sum of the current ambient light increments of each display area from the current ambient light intensity to obtain a difference as the real ambient light intensity.

[0099] As an example, in the above embodiment, the current ambient light increment ΔL′ of each display area has been obtained. n In this case, the calculation formula for the real ambient light intensity L that is not polluted by the screen light is:

[0100] In addition, an embodiment of the present application also provides a brightness adjustment device. Referring to FIG. 7 , which is a schematic structural diagram of a brightness adjustment device according to an embodiment of the present application, FIG. 7 shows that, in this embodiment, the brightness adjustment device is applied to a display device and includes: a collection module 100, an acquisition module 200, and a processing module 300. The collection module 100 is configured to collect a reference ambient light increment of the display device using a light sensor. The acquisition module 200 is configured to obtain the current display brightness of the display device when the display device is normally outputting a display image. The processing module 300 is configured to determine a current ambient light increment based on the current display brightness and the reference ambient light increment. The collection module 100 is further configured to collect the current ambient light intensity using the light sensor. The processing module 300 is further configured to determine the actual ambient light intensity based on the current ambient light intensity and the current ambient light increment. The processing module 300 is further configured to determine a target dimming parameter based on the actual ambient light intensity and a preset value correspondence table, and to adjust the brightness of the display device based on the target dimming parameter.

[0101] In some embodiments, the acquisition module 100 is further used to acquire the original ambient light intensity through the light sensor when the display device does not output a display image; to acquire the reference ambient light intensity through the light sensor when the display device outputs a display image based on a reference display brightness; and to use the difference obtained by subtracting the original ambient light intensity from the reference ambient light intensity as the reference ambient light increment of the display device.

[0102] In some embodiments, the reference display brightness includes the maximum image brightness and the maximum backlight brightness, and the reference ambient light intensity includes the maximum ambient light intensity; the acquisition module 100 is also used to acquire the maximum ambient light intensity through the light sensor when the display device outputs a display image based on the maximum image brightness and the maximum backlight brightness.

[0103] In some embodiments, the current display brightness includes current image brightness; the processing module 300 is further configured to determine the current ambient light increment based on the current image brightness and the reference ambient light increment.

[0104] In some embodiments, the current display brightness also includes current backlight brightness; the processing module 300 is further configured to determine the current ambient light increment based on the current image brightness, the current backlight brightness, and the reference ambient light increment.

[0105] In some embodiments, the display screen of the display device includes multiple display areas, and the current ambient light increment includes the sum of the current ambient light increments of each display area; the processing module 300 is also used to determine the sum of the current ambient light increments of each display area based on the current display brightness of each display area and the reference ambient light increment of each display area.

[0106] In some embodiments, the preset numerical correspondence table includes a first numerical correspondence table and a second numerical correspondence table, the first numerical correspondence table is a numerical correspondence table of ambient light intensity and backlight brightness, and the second numerical correspondence table is a numerical correspondence table of backlight brightness and dimming parameters; the processing module 300 is also used to generate a corresponding relationship formula including ambient light intensity and dimming parameters based on the first numerical correspondence table and the second numerical correspondence table; the actual ambient light intensity is substituted into the corresponding relationship formula to obtain the target dimming parameters.

[0107] The brightness adjustment device provided in this embodiment and the brightness adjustment method provided in the above embodiment belong to the same technical concept. Technical details not fully described in this embodiment can be referred to any of the above embodiments, and this embodiment has the same beneficial effects as executing the brightness adjustment method.

[0108] In addition, embodiments of the present application further provide a display device, wherein the brightness adjustment method for the display device can be performed by a brightness adjustment device, which can be implemented in software and / or hardware and integrated into the display device. The display device can be an electronic device with a display screen, such as a television, a PC (personal computer, desktop, laptop, small laptop, tablet, ultrabook, etc.), a mobile phone, or a smart wearable device.

[0109] Referring to Figure 8, Figure 8 is a schematic diagram of the structure of a display device provided in an embodiment of the present application. As shown in Figure 8, the display device may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may include a standard wired interface and a wireless interface (such as a wireless fidelity (WIreless-FIdelity, WI-FI) interface). The memory 1005 may be a high-speed random access memory (Random Access Memory, RAM) or a stable non-volatile memory (Non-Volatile Memory, NVM), such as a disk storage. The memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0110] Those skilled in the art will appreciate that the structure shown in FIG8 does not limit the display device, and may include more or fewer components than shown, or a combination of certain components, or a different arrangement of components.

[0111] As shown in FIG8 , the memory 1005 as a storage medium may include an operating system, a data storage module, a network communication module, a user interface module, and a computer program.

[0112] In the display device shown in Figure 8, the network interface 1004 is mainly used for data communication with other devices; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in this embodiment can be set in the display device, and the display device calls the computer program stored in the memory 1005 through the processor 1001, and performs the following operations: collecting the reference ambient light increment of the display device through the light sensor; when the display device outputs the display image normally, obtaining the current display brightness of the display device; determining the current ambient light increment based on the current display brightness and the reference ambient light increment; collecting the current ambient light intensity through the light sensor, and determining the real ambient light intensity based on the current ambient light intensity and the current ambient light increment; determining the target dimming parameter according to the real ambient light intensity and the preset value correspondence table, and adjusting the brightness of the display device based on the target dimming parameter.

[0113] Furthermore, the processor 1001 can call the computer program stored in the memory 1005 and perform the following operations: when the display device does not output a display image, the original ambient light intensity is collected by the light sensor; when the display device outputs a display image based on a reference display brightness, the reference ambient light intensity is collected by the light sensor; and the difference between the reference ambient light intensity and the original ambient light intensity is subtracted as the reference ambient light increment of the display device.

[0114] Furthermore, the reference display brightness includes the maximum image brightness and the maximum backlight brightness, and the reference ambient light intensity includes the maximum ambient light intensity; the processor 1001 can call the computer program stored in the memory 1005 and perform the following operations: when the display device outputs a display image based on the maximum image brightness and the maximum backlight brightness, the maximum ambient light intensity is collected through the light sensor.

[0115] Furthermore, the current display brightness includes the current image brightness; the display screen of the display device includes multiple display areas, and the processor 1001 can call the computer program stored in the memory 1005 and perform the following operations: determine the current ambient light increment based on the current image brightness and the reference ambient light increment.

[0116] Furthermore, the current display brightness also includes the current backlight brightness; the processor 1001 can call the computer program stored in the memory 1005 and perform the following operations: determine the current ambient light increment based on the current image brightness, the current backlight brightness and the reference ambient light increment.

[0117] Furthermore, the display screen of the display device includes multiple display areas, and the current ambient light increment includes the sum of the current ambient light increments of each display area; the processor 1001 can call the computer program stored in the memory 1005 and perform the following operations: determine the sum of the current ambient light increments of each display area based on the current display brightness of each display area and the reference ambient light increment of each display area.

[0118] Furthermore, the preset numerical correspondence table includes a first numerical correspondence table and a second numerical correspondence table, the first numerical correspondence table is a numerical correspondence table of ambient light intensity and backlight brightness, and the second numerical correspondence table is a numerical correspondence table of backlight brightness and dimming parameters; the processor 1001 can call the computer program stored in the memory 1005, and also perform the following operations: based on the first numerical correspondence table and the second numerical correspondence table, generate a corresponding relationship formula including ambient light intensity and dimming parameters; substitute the actual ambient light intensity into the corresponding relationship formula to obtain the target dimming parameters.

[0119] The display device proposed in this embodiment and the brightness adjustment method applied to the display device proposed in the above embodiment belong to the same technical concept. Technical details not fully described in this embodiment can be referred to any of the above embodiments, and this embodiment has the same beneficial effects as executing the brightness adjustment method.

[0120] In addition, an embodiment of the present application also proposes a computer-readable storage medium, which is applied to a computer. The computer-readable storage medium can be a non-volatile computer-readable storage medium. A computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, the brightness adjustment method of any of the embodiments described above is implemented.

[0121] Those skilled in the art will appreciate that all or some of the steps and systems in the method disclosed above can be implemented as software, firmware, hardware, and appropriate combinations thereof. Some physical components or all physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, and the computer-readable medium can include computer storage media (or non-transitory media) and communication media (or temporary media). As known to those skilled in the art, the term computer storage media is included in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data) and is volatile and non-volatile, removable, and non-removable. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory, or other memory technology, CD-ROM, digital versatile disks (DVD), or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage, or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, as is well known to those skilled in the art, communication media typically embodies computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0122] The above is a specific description of the preferred implementation of the embodiments of the present application, but the embodiments of the present application are not limited to the above-mentioned implementation methods. Technical personnel familiar with the art can also make various equivalent modifications or substitutions without violating the spirit of the embodiments of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the embodiments of the present application.

Claims

1. A brightness adjustment method, wherein: The brightness adjustment method is applied to a display device, and the brightness adjustment method includes: collecting a reference ambient light increment of the display device by a light sensor; When the display device outputs a display image normally, obtaining the current display brightness of the display device; determining a current ambient light increment according to the current display brightness and the reference ambient light increment; collecting the current ambient light intensity by the light sensor, and determining the real ambient light intensity according to the current ambient light intensity and the current ambient light increment; A target dimming parameter is determined according to the actual ambient light intensity and a preset value correspondence table, and the brightness of the display device is adjusted based on the target dimming parameter.

2. The brightness adjustment method according to claim 1, wherein: The collecting of the reference ambient light increment of the display device by using a light sensor includes: When the display device does not output a display image, collecting the original ambient light intensity by the light sensor; When the display device outputs a display image based on a reference display brightness, collecting a reference ambient light intensity by the light sensor; A difference value obtained by subtracting the original ambient light intensity from the reference ambient light intensity is used as a reference ambient light increment of the display device.

3. The brightness adjustment method according to claim 2, wherein: The reference display brightness includes the maximum image brightness and the maximum backlight brightness, and the reference ambient light intensity includes the maximum ambient light intensity; When the display device outputs a display image based on the reference display brightness, collecting the reference ambient light intensity by the light sensor includes: In a case where the display device outputs a display picture based on the maximum image brightness and the maximum backlight brightness, the maximum ambient light intensity is collected by the light sensor.

4. The brightness adjustment method according to claim 1, wherein: The current display brightness includes current image brightness; and determining the current ambient light increment according to the current display brightness and the reference ambient light increment includes: The current ambient light increment is determined according to the current image brightness and the reference ambient light increment.

5. The brightness adjustment method according to claim 4, wherein: The current display brightness also includes a current backlight brightness; and determining the current ambient light increment according to the current display brightness and the reference ambient light increment includes: The current ambient light increment is determined according to the current image brightness, the current backlight brightness, and the reference ambient light increment. The brightness adjustment method according to claim 1 , wherein: The display screen of the display device includes multiple display areas, and the current ambient light increment includes the sum of the current ambient light increments of each display area; The determining the current ambient light increment according to the current display brightness and the reference ambient light increment includes: The sum of the current ambient light increments of each display area is determined according to the current display brightness of each display area and the reference ambient light increment of each display area.

7. The brightness adjustment method according to claim 6, wherein: The current display brightness includes the current image brightness and the current backlight brightness; The determining the current ambient light increment according to the current display brightness and the reference ambient light increment further includes: Obtaining a first ratio of a current backlight brightness of each of the display areas to a preset reference backlight brightness; Obtaining a second ratio of the current image brightness of each of the display areas to the preset reference image brightness; A product obtained by multiplying the first ratio, the second ratio, and the reference ambient light increment of each display area is determined as the current ambient light increment of each display area.

8. The brightness adjustment method according to claim 7, wherein: The second ratio of the current image brightness of each display area to the preset reference image brightness is Among them, the B n is the current image brightness of each of the display areas, n=1, 2...n, and B0 is the brightness value of a 100% white field image.

9. The brightness adjustment method according to claim 8, wherein: The determining the actual ambient light intensity according to the current ambient light intensity and the current ambient light increment includes: A difference value obtained by subtracting the sum of the current ambient light increments of each display area from the current ambient light intensity is determined as the real ambient light intensity.

10. The brightness adjustment method according to claim 9, wherein: The calculation formula of the real ambient light intensity L is: Wherein, n=1, 2...n, LC is the current ambient light intensity, is the second ratio of the current image brightness of each display area to the preset reference image brightness, BL is the first ratio of the current backlight brightness of each display area to the preset reference backlight brightness, ΔL n is the reference ambient light increment of each of the display areas.

11. The brightness adjustment method according to claim 10, wherein: The reference ambient light increment ΔL of each display area n The calculation formula is: ΔL n =L n -L0, Wherein, n=1, 2...n, L0 is the reading of the illumination sensor when the display device does not output the display image, L n The reading of the illumination sensor when a 100% white screen signal is outputted separately for each of the display areas and the screen backlight brightness is 100% is obtained.

12. The brightness adjustment method according to claim 1, wherein: The preset value correspondence table includes a first value correspondence table and a second value correspondence table, the first value correspondence table is a value correspondence table of ambient light intensity and backlight brightness, and the second value correspondence table is a value correspondence table of backlight brightness and dimming parameters; The step of determining the target dimming parameter according to the actual ambient light intensity and the preset value correspondence table includes: generating a corresponding relationship formula including ambient light intensity and dimming parameters based on the first value corresponding table and the second value corresponding table; Substitute the actual ambient light intensity into the corresponding relationship to obtain the target dimming parameter.

13. A brightness adjustment device, wherein: The brightness adjustment device is applied to a display device, and the brightness adjustment device includes: An acquisition module, configured to acquire a reference ambient light increment of the display device through a light sensor; an acquisition module, configured to acquire the current display brightness of the display device when the display device outputs a display image normally; a processing module, configured to determine a current ambient light increment based on the current display brightness and the reference ambient light increment; The acquisition module is further configured to acquire the current ambient light intensity through the light sensor, and the processing module is further configured to determine the actual ambient light intensity based on the current ambient light intensity and the current ambient light increment; The processing module is further configured to determine a target dimming parameter according to the actual ambient light intensity and a preset value correspondence table, and adjust the brightness of the display device based on the target dimming parameter.

14. A display device, wherein: The display device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program implements the steps of the brightness adjustment method according to any one of claims 1 to 12 when executed by the processor.

15. A computer-readable storage medium, wherein: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the brightness adjustment method according to any one of claims 1 to 12 are implemented.

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