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

Abstract

The present application relates to a backlight adjustment method, device, display device and computer-readable storage medium. The method includes: obtaining the current maximum point and the current minimum point of the change line segment corresponding to the preset backlight curve; obtaining the optimized backlight line segment according to the current maximum point and the current minimum point, and adjusting the backlight of the display device to be tested according to the optimized backlight line segment; the current value of the optimized backlight adjustment point in the optimized backlight line segment is less than the current value of the preset backlight adjustment point with the same average brightness value in the change line segment, so that the processed optimized backlight line segment meets the brightness energy efficiency optimization condition, and then the backlight of the display device to be tested can be adjusted according to the obtained optimized backlight line segment, so as to achieve the optimized backlight adjustment of the display device to be tested, and the energy efficiency of the display device to be tested is reduced when the maximum brightness of the display device to be tested remains unchanged, thereby meeting the test requirements and achieving the optimal balance between the brightness ratio and the energy efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of backlight adjustment, and in particular to a backlight adjustment method, device, display device and computer-readable storage medium. Background Art

[0002] At present, display devices such as televisions and tablets are being used more and more widely. In order to enhance the viewing experience of users using display devices, it is usually hoped that the brightness ratio of the display devices can be as high as possible. However, in current display devices, if the brightness ratio of the display device is higher, its energy efficiency will also be greater; if the energy efficiency of the display device is reduced, the brightness ratio of the display device will also be reduced.

[0003] During the implementation process, the inventors found that there are at least the following problems in the conventional technology: in current display devices, the brightness ratio and energy efficiency cannot reach an optimal balance. Summary of the invention

[0004] Based on this, it is necessary to provide a backlight adjustment method, device, display device and computer-readable storage medium that can meet the brightness ratio and energy efficiency requirements of the display device in order to address the above technical problems.

[0005] A backlight adjustment method comprises the following steps:

[0006] Obtaining the current maximum value point and the current minimum value point corresponding to the change line segment in the preset backlight curve;

[0007] According to the current maximum point and the current minimum point, the optimized backlight line segment is obtained, and the backlight of the display device to be tested is adjusted according to the optimized backlight line segment; the current value of the optimized backlight adjustment point in the optimized backlight line segment is smaller than the current value of the preset backlight adjustment point with the same average brightness value in the changing line segment.

[0008] Optionally, the step of optimizing the backlight line segment according to the current maximum value point and the current minimum value point includes:

[0009] Based on the test screen, obtain the test points of the changing line segments;

[0010] According to the test point, select the middle point with the same average brightness value as the test point; the current value of the middle point is smaller than the current value of the test point;

[0011] According to the current maximum point, current minimum point and middle point, the optimized backlight line segment is obtained.

[0012] Optionally, the step of selecting, according to the test point, an intermediate point having the same average brightness value as the test point includes:

[0013] Based on the preset optimized energy efficiency value of the display device to be tested, a middle point is selected that obtains the same average brightness value as the test point.

[0014] Optionally, the step of obtaining an optimized backlight line segment according to the current maximum point, the current minimum point and the middle point includes:

[0015] According to the current maximum point and the middle point, a first backlight line segment is obtained;

[0016] According to the middle point and the current minimum value point, a second backlight line segment is obtained;

[0017] The first backline segment and the second backline segment form an optimized backline segment.

[0018] Optionally, the first backlight line segment is a linear line segment; and the second backlight line segment is a linear line segment.

[0019] Optionally, the test screen is three black and three white screens.

[0020] Optionally, the changing line segment is a linear line segment.

[0021] A backlight adjustment device, comprising:

[0022] An acquisition unit, used for acquiring a current maximum value point and a current minimum value point corresponding to a change line segment in a preset backlight curve;

[0023] The adjustment unit is used to obtain an optimized backlight line segment according to the current maximum point and the current minimum point, and to adjust the backlight of the display device to be tested according to the optimized backlight line segment; the current value of the optimized backlight adjustment point in the optimized backlight line segment is less than the current value of the preset backlight adjustment point with the same average brightness value in the variation line segment.

[0024] A display device includes a memory and a processor, wherein the memory stores a computer program, and the processor implements the following steps when executing the computer program:

[0025] Obtaining the current maximum value point and the current minimum value point corresponding to the change line segment in the preset backlight curve;

[0026] According to the current maximum point and the current minimum point, the optimized backlight line segment is obtained, and the backlight of the display device to be tested is adjusted according to the optimized backlight line segment; the current value of the optimized backlight adjustment point in the optimized backlight line segment is smaller than the current value of the preset backlight adjustment point with the same average brightness value in the changing line segment.

[0027] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the following steps:

[0028] Obtaining the current maximum value point and the current minimum value point corresponding to the change line segment in the preset backlight curve;

[0029] According to the current maximum point and the current minimum point, the optimized backlight line segment is obtained, and the backlight of the display device to be tested is adjusted according to the optimized backlight line segment; the current value of the optimized backlight adjustment point in the optimized backlight line segment is smaller than the current value of the preset backlight adjustment point with the same average brightness value in the changing line segment.

[0030] One of the above technical solutions has the following advantages and beneficial effects:

[0031] In the above-mentioned backlight adjustment method, based on the preset backlight curve, the current maximum point and the current minimum point of the corresponding changing line segment in the preset backlight curve are obtained; the obtained current maximum point and the current minimum point are processed to obtain an optimized backlight line segment, wherein the current value of the optimized backlight adjustment point in the optimized backlight line segment is less than the current value of the preset backlight adjustment point with the same average brightness value in the changing line segment, so that the processed optimized backlight line segment meets the brightness energy efficiency optimization conditions, and then the backlight of the display device to be tested can be adjusted according to the obtained optimized backlight line segment, so as to realize the optimized backlight adjustment of the display device to be tested, and the energy efficiency of the display device to be tested is reduced when the maximum brightness of the display device to be tested remains unchanged, thereby meeting the test requirements and achieving an optimized balance between the brightness ratio and the energy efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a diagram of the application environment of the backlight adjustment method in an embodiment of the present application.

[0033] Figure 2 Schematic diagram of the first process of the backlight adjustment method in the embodiment of the present application.

[0034] Figure 3 Schematic diagram of the second process of the backlight adjustment method in the embodiment of the present application.

[0035] Figure 4 It is a flowchart of the step of optimizing the backlight line segment acquisition in the embodiment of the present application.

[0036] Figure 5 Schematic diagram of a backlight curve of the backlight adjustment method in an embodiment of the present application.

[0037] Figure 6 4 is a structural block diagram of the backlight adjustment device in an embodiment of the present application.

[0038] Figure 7 It is a diagram showing the internal structure of the device in the embodiment of the present application. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with 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.

[0040] The backlight adjustment method provided in this application can be applied to Figure 1 In the application environment shown. Among them, the display device to be tested can be an LED display device, for example, the display device to be tested can be but not limited to an LCD TV, a conference flat panel and a monitoring display screen. The display device to be tested may include a liquid crystal display panel and a processor 110; the liquid crystal display panel includes a backlight source 120, the backlight source 120 includes an LED component 122 and an LED driving circuit 124, the processor 110 is connected to the LED driving circuit 124, the processor 110 obtains the current maximum point and the current minimum point of the change line segment corresponding to the preset backlight curve; the obtained current maximum point and current minimum point are processed to obtain an optimized backlight line segment, wherein the current value of the optimized backlight adjustment point in the optimized backlight line segment is less than the current value of the preset backlight adjustment point of the same average brightness value in the change line segment, so that the optimized backlight line segment obtained by processing meets the brightness energy efficiency optimization condition, and then the LED driving circuit 124 can be controlled according to the obtained optimized backlight line segment, and then the LED component 122 is driven by the LED driving circuit 124 to achieve backlight adjustment of the display device to be tested.

[0041] In one embodiment, Figure 2 As shown, a backlight adjustment method is provided, which is applied to Figure 1 The processor 110 in FIG. 1 is taken as an example to illustrate, and the following steps are included:

[0042] Step 210, obtaining the current maximum value point and the current minimum value point corresponding to the change line segment in the preset backlight curve.

[0043] Among them, the preset backlight curve refers to the original backlight curve of the display device to be tested, and the preset backlight curve can be preset by the system. For example, the preset backlight curve can be a discounted backlight curve or an arc backlight curve. In one example, the preset backlight curve can be established based on a two-dimensional coordinate system, and the abscissa on the two-dimensional coordinate system represents the average brightness (APL, average picture level) of the picture to be displayed, and the ordinate represents the current value of the backlight drive of the picture to be displayed. That is, the preset backlight curve contains a number of original backlight adjustment coordinate points, and each original backlight adjustment coordinate point includes the backlight drive current value and the average brightness of the corresponding display picture to be tested. The change line segment can be the backlight line segment between the coordinate points of the maximum current value and the minimum current value in the preset backlight curve. The current maximum point refers to the coordinate point with the maximum current value in the change line segment; the current minimum point refers to the coordinate point with the minimum current value in the change line segment. In one example, the current value of the current maximum point can be the current value (I L32), the current value at the current minimum point can be the current value of the LED backlight drive corresponding to the full white screen (I 全白画面 ).

[0044] Specifically, the processor of the display device to be tested may pre-store a preset backlight curve, for example, the processor may pre-store a preset backlight curve of a broken line transitioning from a maximum current to a minimum current. The processor queries a change line segment in the preset backlight curve and obtains a current maximum value point and a current minimum value point of the change line segment.

[0045] Step 220, obtaining an optimized backlight line segment based on the current maximum point and the current minimum point, and performing backlight adjustment on the display device to be tested based on the optimized backlight line segment; the current value of the optimized backlight adjustment point within the optimized backlight line segment is less than the current value of the preset backlight adjustment point with the same average brightness value within the variation line segment.

[0046] Among them, the beginning of the optimized backlight line segment can be a current maximum point, and the end of the optimized backlight line segment is a current minimum point; in one example, the beginning of the optimized backlight line segment can be a current minimum point, and the end of the optimized backlight line segment is a current maximum point. The beginning and end of the optimized backlight line segment are composed of several lines connecting optimized backlight adjustment points. The current values ​​of each optimized backlight adjustment point in the optimized backlight line segment are all smaller than the current value of the preset backlight adjustment point with the same average brightness value in the changing line segment. That is, the current value of any optimized backlight adjustment point in the optimized backlight line segment is smaller than the current value of the preset backlight adjustment point with the same average brightness value in the changing line segment. In the two-dimensional coordinate system presentation, the optimized backlight line segment is located below the changing line segment.

[0047] Specifically, the processor of the display device to be tested can process the obtained current maximum value point and current minimum value point, and then obtain the optimized backlight line segment, and make the current value of the optimized backlight adjustment point in the obtained optimized backlight line segment smaller than the current value of the preset backlight adjustment point with the same average brightness value in the change line segment. Then, when the backlight of the display device to be tested is adjusted, the processing can control the LED backlight driving current according to the optimized backlight line segment, that is, adjust the backlight source of the display device to be tested based on the optimized backlight line segment, so as to achieve the backlight adjustment of the display device to be tested.

[0048] In the above-mentioned backlight adjustment method, based on the preset backlight curve, the current maximum point and the current minimum point of the corresponding changing line segment in the preset backlight curve are obtained; the obtained current maximum point and the current minimum point are processed to obtain an optimized backlight line segment, wherein the current value of the optimized backlight adjustment point in the optimized backlight line segment is less than the current value of the preset backlight adjustment point with the same average brightness value in the changing line segment, so that the processed optimized backlight line segment meets the brightness energy efficiency optimization conditions, and then the backlight of the display device to be tested can be adjusted according to the obtained optimized backlight line segment, so as to realize the optimized backlight adjustment of the display device to be tested, and the energy efficiency of the display device to be tested is reduced when the maximum brightness of the display device to be tested remains unchanged, thereby meeting the test requirements and achieving an optimized balance between the brightness ratio and the energy efficiency.

[0049] In order to further illustrate the process of obtaining the optimized backlight line segment and the backlight optimization adjustment process, the energy efficiency of the display device under test is reduced while the maximum brightness of the display device under test remains unchanged, thereby improving the backlight adjustment efficiency of the display device under test. Figure 3 As shown, a backlight adjustment method is provided, which is applied to Figure 1 The processor 110 in FIG. 1 is taken as an example to illustrate, and the following steps are included:

[0050] Step S310, obtaining a current maximum point and a current minimum point corresponding to a change line segment in a preset backlight curve.

[0051] For details about how the processor obtains the current maximum value point and the current minimum value point corresponding to the change line segment in the preset backlight curve, please refer to the above content, which will not be repeated here.

[0052] Step S320: acquiring the test points of the change line segments based on the test picture.

[0053] Among them, the test screen refers to a display screen used to test the brightness ratio and energy efficiency. For example, the test screen can be a display screen with pre-set pixels. In one example, the test screen can be but is not limited to a one black and one white screen, a two black and two white screen, a three black and three white screen, a four black and four white screen and other display screens. It should be noted that the selection of the test screen can be determined according to specific test requirements. The test point refers to a preset backlight adjustment point on the corresponding test change line segment when the test screen is displayed. The average brightness of the preset backlight adjustment point is the average brightness of the test screen, and the current value of the preset backlight adjustment point is the driving current value for displaying the test screen.

[0054] Specifically, the processor can process the current maximum point and the current minimum point according to the preset test screen, and then obtain the current value and average brightness value of the corresponding test screen. Based on the current value and average brightness value of the test screen, the change line segment is queried, and then the test point of the current value and average brightness value of the corresponding test screen can be queried.

[0055] Step S330 , selecting a middle point having the same average brightness value as the test point according to the test point; the current value of the middle point is smaller than the current value of the test point.

[0056] The average brightness value of the middle point is the same as the average brightness value of the test point, and the current value of the middle point is smaller than the current value of the test point. In one example, the current value of the middle point may be between the current value of the test point and the current value of the current minimum point. That is, the current value range between the test point and the current minimum point is to arbitrarily select a current value as the current value of the middle point.

[0057] Specifically, the processor can select a middle point with the same average brightness value as the test point according to the acquired test point, and make the current value of the middle point smaller than the current value of the test point, that is, in the two-dimensional coordinate system, the middle point is located directly below the test point.

[0058] Step S340, obtaining an optimized backlight line segment according to the current maximum point, the current minimum point and the middle point.

[0059] Specifically, the processor may process the obtained current maximum point, current minimum point and middle point to obtain an optimized backlight line segment, and the obtained optimized backlight line segment passes through the current maximum point, current minimum point and middle point. In one example, the line segment between the current maximum point and the middle point may be a curved line segment or a straight line segment. The line segment between the current minimum point and the middle point may be a curved line segment or a straight line segment.

[0060] In one example, the beginning of the optimized backlight line segment can be a current minimum point, and the end of the optimized backlight line segment is a current maximum point. The beginning and the end of the optimized backlight line segment are composed of a middle point and a line connecting several optimized backlight adjustment points. The current values ​​of the middle point and each optimized backlight adjustment point in the optimized backlight line segment are all smaller than the current value of the preset backlight adjustment point with the same average brightness value in the changing line segment. That is, the current value of any point (middle point or optimized backlight adjustment point) in the optimized backlight line segment is smaller than the current value of the preset backlight adjustment point with the same average brightness value in the changing line segment. In the two-dimensional coordinate system presentation, the optimized backlight line segment is located below the changing line segment.

[0061] Step S350, adjusting the backlight of the display device to be tested according to the optimized backlight line segment; the current value of the optimized backlight adjustment point in the optimized backlight line segment is smaller than the current value of the preset backlight adjustment point with the same average brightness value in the variation line segment.

[0062] The processor adjusts the backlight of the display device to be tested according to the optimized backlight line segment. Please refer to the above content and will not repeat it here.

[0063] Specifically, the processor obtains the current maximum point and the current minimum point of the changing line segment in the corresponding preset backlight curve based on the preset backlight curve; the processor obtains the test point of the changing line segment based on the test screen; the processor selects the middle point with the same average brightness value as the test point according to the test point; the current value of the middle point is less than the current value of the test point; the processor obtains the optimized backlight line segment according to the current maximum point, the current minimum point and the middle point, so that the processed optimized backlight line segment meets the brightness energy efficiency optimization conditions, and then the processor can adjust the backlight of the display device to be tested according to the obtained optimized backlight line segment, so as to realize the optimized backlight adjustment of the display device to be tested. When the maximum brightness of the display device to be tested remains unchanged, the energy efficiency of the display device to be tested is reduced, thereby meeting the test requirements and achieving an optimized balance between the brightness ratio and the energy efficiency.

[0064] In order to further illustrate the process of obtaining the middle point of the optimized backlight line segment, the selected middle point can be better adapted to the optimized backlight line segment, so that the processed optimized backlight line segment has a larger brightness ratio while reducing the energy efficiency of the display device under test. In one example, according to the test point, the step of selecting the middle point with the same average brightness value as the test point includes:

[0065] Based on the preset optimized energy efficiency value of the display device to be tested, a middle point is selected that obtains the same average brightness value as the test point.

[0066] Among them, the preset optimized energy efficiency value can be determined according to specific test requirements. The processor can process the preset optimized energy efficiency value of the display device to be tested based on the test screen to obtain the backlight driving current value corresponding to the preset optimized energy efficiency value. Then the processor obtains the middle point according to the backlight driving current value and the average brightness value of the test point. That is, the current value of the middle point is the backlight driving circuit value, and the average brightness value of the middle point is the average brightness value of the test point. Therefore, the processor can obtain the optimized backlight line segment according to the current maximum point, the current minimum point and the middle point, and adjust the backlight of the display device to be tested according to the obtained optimized backlight line segment, so as to achieve the display device to be tested. When the maximum brightness remains unchanged, the energy efficiency of the display device to be tested is reduced, thereby meeting the test requirements and achieving an optimized balance between brightness ratio and energy efficiency.

[0067] In order to further optimize the optimized backlight line segment, the energy efficiency of the display device under test is reduced while the maximum brightness of the display device under test remains unchanged, thereby improving the backlight adjustment efficiency of the display device under test. Figure 4 As shown, the steps of optimizing the backlight line segment according to the current maximum point, the current minimum point and the middle point include:

[0068] Step S410, obtaining a first backlight line segment according to the current maximum point and the middle point.

[0069] Among them, the first backlight line segment refers to the line segment between the current maximum point and the middle point, the beginning of the first backlight line segment is the current maximum point, the end of the first backlight line segment is the middle point, and the first backlight line segment is obtained by connecting the current maximum point and the middle point. The current values ​​of each optimized backlight adjustment point in the first backlight line segment are all smaller than the current value of the preset backlight adjustment point with the same average brightness value in the changing line segment. That is, the current value of any optimized backlight adjustment point in the first backlight line segment is smaller than the current value of the preset backlight adjustment point with the same average brightness value in the changing line segment. In the two-dimensional coordinate system presentation, the first backlight line segment is located below the changing line segment. In one example, the first backlight line segment is a linear line segment, and the changing line segment is a linear line segment; that is, the first backlight line segment is a straight line segment, and the changing line segment is a straight line segment.

[0070] Specifically, the processor connects the acquired current maximum value point and the middle point based on the brightness ratio and the energy efficiency requirement, and thus obtains the first backlight line segment.

[0071] Step S420, obtaining a second backlight line segment according to the middle point and the current minimum value point.

[0072] Among them, the second backlight line segment refers to the line segment between the current minimum point and the middle point, the end of the first backlight line segment is the current minimum point, the beginning of the first backlight line segment is the middle point, and the second backlight line segment is obtained by connecting the current minimum point and the middle point. The current values ​​of each optimized backlight adjustment point in the second backlight line segment are all smaller than the current value of the preset backlight adjustment point with the same average brightness value in the changing line segment. That is, the current value of any optimized backlight adjustment point in the second backlight line segment is smaller than the current value of the preset backlight adjustment point with the same average brightness value in the changing line segment. In the two-dimensional coordinate system presentation, the second backlight line segment is located below the changing line segment. In one example, the second backlight line segment is a linear line segment, and the changing line segment is a linear line segment; that is, the second backlight line segment is a straight line segment, and the changing line segment is a straight line segment.

[0073] Specifically, the processor connects the acquired current minimum value point and the middle point based on the brightness ratio and energy efficiency requirements, thereby obtaining the second backlight line segment.

[0074] Step S430: compose an optimized backline segment from the first backline segment and the second backline segment.

[0075] The processor forms an optimized backlight line segment according to the first backlight line segment and the second backlight line segment, so that the current value of the optimized backlight adjustment point of the optimized backlight line segment is less than the current value of the preset backlight adjustment point of the same average brightness value in the change line segment. That is, in the backlight adjustment of the display device to be tested, except for the maximum current and the minimum current, the current in any other screen is reduced, so that the energy efficiency of the display device to be tested is reduced when the maximum brightness remains unchanged.

[0076] In one example, the test screen is a three-black and three-white screen. According to the test, the ratio of black to white in the three-black and three-white screen is 1:1, so half of the transmitted Local dimming data is 0xFFF and the other half is 0x000. The average brightness A of the three-black and three-white screen is calculated to be 0x7FF. The preset backlight curve is as follows Figure 5 The thick solid line portion shown is a linear change from the maximum current to the minimum current. By adjusting the backlight value in the OSD menu, the brightness of the picture changes evenly. At this time, the current corresponding to the three black and three white pictures is I1. Among them, I1=0.5*(I L32 +I 全白画面 ), but the energy efficiency is relatively high at this time. For machines of certain sizes, it is impossible to meet the energy efficiency standard test requirements (such as the North American energy efficiency standard test requirements). In order to meet the energy efficiency standard requirements, the traditional method is to reduce the maximum brightness, so that the Backlight in the OSD menu is reduced in the factory mode to meet the energy efficiency requirements, but it reduces the brightness of the display device to be tested.

[0077] In order to reduce the energy efficiency of the display device under test while keeping the maximum brightness unchanged, thereby meeting the test requirements and achieving an optimal balance between brightness ratio and energy efficiency, in one example, the present application optimizes the preset backlight curve, such as Figure 5 The thin solid line portion shown is composed of two independent linearly changing line segments to optimize the backlight segments, so that except for the maximum current and the minimum current, the current in any other picture is reduced. Therefore, under the condition of unchanged maximum brightness, the energy efficiency of the TV is reduced, thereby realizing more high-brightness display devices and meeting the corresponding energy efficiency standard test requirements without reducing the maximum brightness.

[0078] It should be understood that although Figure 2-4The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, Figure 2-4 At least part of the steps may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least part of the sub-steps or stages of other steps.

[0079] In one embodiment, Figure 6 As shown, a backlight adjustment device is provided, including: an acquisition unit 610 and an adjustment unit 620, wherein:

[0080] The acquisition unit 610 is used to acquire the current maximum value point and the current minimum value point corresponding to the change line segment in the preset backlight curve.

[0081] The adjustment unit 620 is used to obtain an optimized backlight line segment according to the current maximum point and the current minimum point, and to adjust the backlight of the display device to be tested according to the optimized backlight line segment; the current value of the optimized backlight adjustment point within the optimized backlight line segment is less than the current value of the preset backlight adjustment point with the same average brightness value within the variation line segment.

[0082] In one example, the adjustment unit 620 is also used to obtain test points of the changing line segment based on the test screen; according to the test points, an intermediate point with the same average brightness value as the test points is selected; the current value of the intermediate point is less than the current value of the test point; and according to the current maximum point, the current minimum point and the intermediate point, an optimized backlight line segment is obtained.

[0083] In an example, the adjustment unit 620 is further configured to select a middle point having the same average brightness value as the test point based on a preset optimized energy efficiency value of the display device to be tested.

[0084] In one example, the adjustment unit 620 is further used to obtain a first backline segment according to a current maximum point and a middle point; obtain a second backline segment according to a middle point and a current minimum point; and form an optimized backline segment from the first backline segment and the second backline segment.

[0085] For the specific definition of the backlight adjustment device, please refer to the definition of the backlight adjustment method above, which will not be repeated here. Each module in the above-mentioned backlight adjustment device can be implemented in whole or in part by software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the display device in the form of hardware, or can be stored in the memory of the display device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0086] In one embodiment, a display device is provided. The display device may be a terminal, and its internal structure diagram may be as follows: Figure 7 As shown. The display device includes a processor, a memory, a network interface, a display screen and an input device connected through a system bus. Among them, the processor of the display device is used to provide computing and control capabilities. The memory of the display device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the display device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a backlight adjustment method is implemented. The display screen of the display device can be a liquid crystal display screen. Further, the display screen of the display device can be a liquid crystal display screen with an LED backlight source. The input device of the display device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the display device housing, or an external keyboard, touchpad or mouse, etc.

[0087] Those skilled in the art will understand that Figure 7 The structure shown in the figure is merely a block diagram of a partial structure related to the scheme of the present application, and does not constitute a limitation on the display device to which the scheme of the present application is applied. The specific display device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0088] In one embodiment, a display device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0089] Obtaining the current maximum value point and the current minimum value point corresponding to the change line segment in the preset backlight curve;

[0090] According to the current maximum point and the current minimum point, the optimized backlight line segment is obtained, and the backlight of the display device to be tested is adjusted according to the optimized backlight line segment; the current value of the optimized backlight adjustment point in the optimized backlight line segment is smaller than the current value of the preset backlight adjustment point with the same average brightness value in the changing line segment.

[0091] In one example, when the processor executes the computer program, the following steps are also implemented:

[0092] Based on the test screen, the test points of the changing line segment are obtained; according to the test points, the middle point with the same average brightness value as the test points is selected; the current value of the middle point is smaller than the current value of the test point; according to the current maximum point, the current minimum point and the middle point, the optimized backlight line segment is obtained.

[0093] In one example, when the processor executes the computer program, the following steps are also implemented:

[0094] Based on the preset optimized energy efficiency value of the display device to be tested, a middle point is selected that obtains the same average brightness value as the test point.

[0095] In one example, when the processor executes the computer program, the following steps are also implemented:

[0096] A first backline segment is obtained according to the current maximum point and the middle point; a second backline segment is obtained according to the middle point and the current minimum point; and an optimized backline segment is composed of the first backline segment and the second backline segment.

[0097] It should be noted that the display device may be, but is not limited to, an LCD TV with an LED backlight, a conference tablet, and a monitoring display screen.

[0098] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0099] Obtaining the current maximum value point and the current minimum value point corresponding to the change line segment in the preset backlight curve;

[0100] According to the current maximum point and the current minimum point, the optimized backlight line segment is obtained, and the backlight of the display device to be tested is adjusted according to the optimized backlight line segment; the current value of the optimized backlight adjustment point in the optimized backlight line segment is smaller than the current value of the preset backlight adjustment point with the same average brightness value in the changing line segment.

[0101] In one example, when the computer program is executed by a processor, the following steps are also implemented:

[0102] Based on the test screen, the test points of the changing line segment are obtained; according to the test points, the middle point with the same average brightness value as the test points is selected; the current value of the middle point is smaller than the current value of the test point; according to the current maximum point, the current minimum point and the middle point, the optimized backlight line segment is obtained.

[0103] In one example, when the computer program is executed by a processor, the following steps are also implemented:

[0104] Based on the preset optimized energy efficiency value of the display device to be tested, a middle point is selected that obtains the same average brightness value as the test point.

[0105] In one example, when the computer program is executed by a processor, the following steps are also implemented:

[0106] A first backline segment is obtained according to the current maximum point and the middle point; a second backline segment is obtained according to the middle point and the current minimum point; and an optimized backline segment is composed of the first backline segment and the second backline segment.

[0107] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0108] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0109] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A backlight adjustment method, characterized in that: The following steps are involved: Obtaining the current maximum value point and the current minimum value point corresponding to the change line segment in the preset backlight curve; According to the current maximum value point and the current minimum value point, an optimized backlight line segment is obtained, and the backlight of the display device to be tested is adjusted according to the optimized backlight line segment; The current value of the optimized backlight adjustment point within the optimized backlight line segment is smaller than the current value of the preset backlight adjustment point with the same average brightness value within the variation line segment; The preset backlight curve is established based on a two-dimensional coordinate system, the abscissa on the two-dimensional coordinate system represents the average brightness of the picture to be displayed, and the ordinate represents the current value of the backlight drive of the picture to be displayed; The step of obtaining an optimized backlight line segment according to the current maximum value point and the current minimum value point comprises: Based on the test picture, obtaining the test point of the change line segment; According to the test point, a middle point having the same average brightness value as the test point is selected; the current value of the middle point is smaller than the current value of the test point; Obtaining the optimized backlight line segment according to the current maximum value point, the current minimum value point and the intermediate point; The step of selecting, based on the test point, an intermediate point having the same average brightness value as the test point comprises: Based on the preset optimized energy efficiency value of the display device to be tested, the middle point that obtains the same average brightness value as the test point is selected.

2. The backlight adjustment method according to claim 1, characterized in that: The step of obtaining the optimized backlight line segment according to the current maximum value point, the current minimum value point and the intermediate point comprises: Obtaining a first backlight line segment according to the current maximum value point and the middle point; Obtaining a second backlight line segment according to the middle point and the current minimum value point; The first backline segment and the second backline segment form the optimized backline segment.

3. The backlight adjustment method according to claim 2, characterized in that: The first backlight line segment is a linear line segment; the second backlight line segment is a linear line segment.

4. The backlight adjustment method according to claim 1, characterized in that: The test screen is three black and three white screens.

5. The backlight adjustment method according to any one of claims 1 to 4, characterized in that: The changing line segment is a linear line segment.

6. A backlight adjustment device, characterized in that: include: An acquisition unit, used for acquiring a current maximum value point and a current minimum value point corresponding to a change line segment in a preset backlight curve; An adjustment unit, used for obtaining an optimized backlight line segment according to the current maximum value point and the current minimum value point, and performing backlight adjustment on the display device to be tested according to the optimized backlight line segment; The current value of the optimized backlight adjustment point within the optimized backlight line segment is less than the current value of the preset backlight adjustment point with the same average brightness value within the changing line segment; wherein the preset backlight curve is established based on a two-dimensional coordinate system, the abscissa on the two-dimensional coordinate system represents the average brightness of the picture to be displayed, and the ordinate represents the current value of the backlight drive of the picture to be displayed; obtaining the optimized backlight line segment according to the current maximum point and the current minimum point includes: based on a test picture, obtaining a test point of the changing line segment; according to the test point, selecting an intermediate point with the same average brightness value as the test point; the current value of the intermediate point is less than the current value of the test point; obtaining the optimized backlight line segment according to the current maximum point, the current minimum point and the intermediate point; and selecting the intermediate point with the same average brightness value as the test point according to the test point includes: based on a preset optimized energy efficiency value of the display device to be tested, selecting the intermediate point with the same average brightness value as the test point.

7. A display device, comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the backlight adjustment method according to any one of claims 1 to 5 are implemented.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the backlight adjustment method according to any one of claims 1 to 5 are implemented.

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