Screen brightness adjustment control method, device and electronic equipment

Abstract

The embodiment of the application provides a screen brightness adjustment control method, device and electronic equipment, wherein the current dimming mode and the current brightness value of the screen are determined, a brightness adjustment instruction is received, the target dimming mode is determined according to the brightness adjustment instruction, and the screen is adjusted from the current brightness value to the target brightness value according to the current dimming mode and the target dimming mode. Therefore, the switching point flicker problem in the process of switching of different dimming modes can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of screens, and in particular to a screen brightness adjustment control method and device and electronic equipment. BACKGROUND

[0002] Hybrid dimming technology is an advanced lighting control technology. Hybrid dimming mode combines multiple dimming modes to optimize the brightness adjustment effect of the light source, achieving a smoother, more accurate and more energy-saving lighting experience. In a hybrid dimming system, the brightness of the light source can be adjusted according to actual needs through different dimming modes. For example, in a hybrid dimming mode composed of DC (Direct Current) dimming and PWM (Pulse Width Modulation) dimming, DC dimming is used for dimming at high brightness, and PWM dimming is used for dimming at low brightness. Hybrid dimming mode combines the advantages of DC dimming mode and PWM dimming mode, intelligently selects the dimming mode according to the current brightness requirement of the screen. At high brightness, the system uses DC dimming to maintain color accuracy and stability; at low brightness, PWM dimming is used to achieve more precise brightness control and energy-saving effect.

[0003] However, switching point flicker is a common problem in hybrid dimming. Switching point flicker refers to the phenomenon that the brightness of the light source is unstable or flickers for a short time when the brightness of the light source is switched from one dimming mode to another due to imperfect matching between the two dimming mechanisms or system response delay. SUMMARY

[0004] The embodiments of the present application provide a screen brightness adjustment control method, device and electronic equipment to solve or alleviate one or more technical problems in the prior art.

[0005] As an aspect of the embodiments of the present application, the embodiments of the present application provide a screen brightness adjustment control method, comprising:

[0006] determining a current dimming mode and a current brightness value of a screen;

[0007] receiving a brightness adjustment instruction;

[0008] determining a target dimming mode according to the brightness adjustment instruction;

[0009] adjusting the screen from the current brightness value to a target brightness value according to the current dimming mode and the target dimming mode.

[0010] In some embodiments, the current dimming mode is one of a first dimming mode and a second dimming mode, and the target dimming mode is one of the first dimming mode and the second dimming mode.

[0011] The working state of the screen dimming includes a first working state and a second working state, the first working state is specifically a mixed dimming of the first dimming mode and the second dimming mode, and the second working state is specifically a dimming using the second dimming mode all the time.

[0012] Before receiving the brightness adjustment instruction, the working state of the screen dimming is the first working state, in the first working state, the first dimming mode is used for dimming when the brightness is greater than a predetermined value, and the second dimming mode is used for dimming when the brightness is less than or equal to the predetermined value.

[0013] In some embodiments, the first dimming mode is a direct current dimming mode, and the second dimming mode is a pulse width modulation dimming mode.

[0014] In some embodiments, the adjusting the screen from the current brightness value to the target brightness value according to the current dimming mode and the target dimming mode includes:

[0015] In response to the current dimming mode being the same as the target dimming mode, adjusting the screen from the current brightness value to the target brightness value according to the current dimming mode.

[0016] In some embodiments, the adjusting the screen from the current brightness value to the target brightness value according to the current dimming mode and the target dimming mode includes:

[0017] In response to the current dimming mode being the first dimming mode and the target dimming mode being the second dimming mode, keeping the current brightness value switches the working state of the screen dimming from the first working state to the second working state to switch the dimming mode to the second dimming mode.

[0018] Adjusting the screen from the current brightness value to the target brightness value in the second dimming mode.

[0019] Keeping the target brightness value switches the working state of the screen dimming from the second working state to the first working state.

[0020] In some embodiments, the adjusting the screen from the current brightness value to the target brightness value according to the current dimming mode and the target dimming mode includes:

[0021] In response to the current dimming mode being the second dimming mode and the target dimming mode being the first dimming mode, keeping the current brightness value switches the working state of the screen dimming from the first working state to the second working state.

[0022] Adjusting the screen from the current brightness value to the target brightness value in the second dimming mode.

[0023] switching the working state of dimming the screen from the second working state to the first working state to switch the dimming mode to the first dimming mode.

[0024] In an embodiment, the first dimming mode and the second dimming mode are switched according to a gray scale value, and the gray scale value of the second dimming mode is obtained by linearly transforming or gamma adjusting the gray scale value of the first dimming mode.

[0025] In an embodiment, the gray scale value of the second dimming mode is obtained by linearly transforming the gray scale value of the first dimming mode, specifically:

[0026] G=α*G1+(1-α)*G2

[0027] wherein G is the gray scale value of the second dimming mode, G1 is the gray scale value of the first dimming mode, and G2 is a predetermined reference gray scale value.

[0028] In a second aspect, the embodiments of the present application provide a screen brightness adjustment control device, which comprises:

[0029] a current state determination unit configured to determine a current dimming mode and a current brightness value of a screen;

[0030] an instruction receiving unit configured to receive a brightness adjustment instruction, the brightness adjustment instruction comprising a target brightness value;

[0031] a target dimming mode determination unit configured to determine a target dimming mode corresponding to the target brightness value;

[0032] an adjustment unit configured to adjust the screen from the current brightness value to the target brightness value according to the current dimming mode and the target dimming mode.

[0033] In a third aspect, the embodiments of the present application provide an electronic device, which comprises:

[0034] a screen;

[0035] a memory;

[0036] a processor;

[0037] The memory is configured to store one or more computer program instructions, and the one or more computer program instructions are executed by the processor to implement the method of the first aspect.

[0038] The technical solutions described above can solve the flickering problem at the switching point in the process of switching between different dimming modes.

[0039] The above summary is intended to illustrate, but not limit, the present application. Further aspects, embodiments and features of the present application will be readily apparent to those skilled in the art from the following detailed description, taken in conjunction with the accompanying drawings and the claims. BRIEF DESCRIPTION OF DRAWINGS

[0040] In the drawings, like numerals refer to like elements throughout the various drawings. The drawings are not necessarily to scale, the emphasis instead being placed on the principles of the application. It should be understood that the drawings are merely meant to depict some embodiments of the present application and should not be considered limiting.

[0041] Figure 1 A schematic diagram of an electronic device according to an embodiment of the present application is shown.

[0042] Figure 2 A flowchart of a screen brightness adjustment control method according to an embodiment of the present application is shown.

[0043] Figure 3 A flowchart of adjusting the screen from a current brightness value to a target brightness value according to the current dimming mode and the target dimming mode according to one embodiment of the present application is shown.

[0044] Figure 4 A schematic diagram of signal and working state changes according to another embodiment of the present application is shown.

[0045] Figure 5 A flowchart of adjusting the screen from a current brightness value to a target brightness value according to the current dimming mode and the target dimming mode according to another embodiment of the present application is shown.

[0046] Figure 6 A schematic diagram of signal and working state changes according to another embodiment of the present application is shown.

[0047] Figure 7 A schematic diagram of a screen brightness adjustment control apparatus according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0048] In the following, only some exemplary embodiments are described in brief. As will be appreciated by those skilled in the art, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. The drawings and the description are therefore to be considered in an illustrative, rather than a restrictive, sense.

[0049] Figure 1 A schematic diagram of an electronic device according to an embodiment of the present application is shown. As Figure 1As shown, the electronic device can be a mobile phone, a tablet computer, a notebook computer or other device with display function, and embodiments of the present application do not limit the electronic device. The electronic device includes a memory 1, a processor 2 and a screen 3, wherein the memory 1 is adapted to store instructions or programs executable by the processor 2. The processor 2 can be a stand-alone microprocessor, or a set of one or more microprocessors. Thus, the processor 2 executes the instructions stored in the memory 1 to perform the screen brightness adjustment control method proposed in the present application. The screen 3 is a display screen of the electronic device, which can be an OLED (Organic Light-Emitting Diode) screen, an LCD (Liquid Crystal Display) screen, and embodiments of the present application do not limit the screen.

[0050] When using the current electronic device, the user needs to adjust the brightness of the screen according to different needs, for example, when using the device at night, the brightness needs to be adjusted to be low to protect the eyes, and when under the sun, the brightness needs to be adjusted to be high to see the screen of the electronic device. In the current dimming technology, hybrid dimming is a commonly used way, and the hybrid dimming mode specifically combines the advantages of multiple dimming modes, and adopts a dimming mode when it is suitable to adopt the dimming mode, thereby achieving better dimming effect. For example, in the DC and PWM hybrid dimming mode, the PWM dimming mode is adopted when the brightness is lower than a predetermined value, and the DC dimming mode is adopted when the brightness is higher than the predetermined value. The DC dimming mode adjusts the brightness by directly controlling the current passing through the screen light emitting component. The greater the current, the greater the light emitting power, and the brighter the screen; on the contrary, the smaller the current, the lower the screen brightness, and the PWM dimming mode adjusts the brightness by controlling the duty cycle. Specifically, when the on-off alternating speed is fast enough, the human eye will feel that the screen is continuously emitting light. The longer the screen-on time, the brighter the screen; the longer the screen-off time, the dimmer the screen.

[0051] However, when the luminance value corresponding to the dimming instruction changes needs to pass through a predetermined value, the switching of the dimming mode is involved, and the switching point flicker problem occurs. For example, when the predetermined value is 60 nit, the screen luminance is increased from 50 nit to 80 nit, if the DC and PWM hybrid dimming scheme in the prior art is adopted, PWM dimming mode needs to be adopted when rising from 50 nit to 60 nit, and DC dimming mode needs to be adopted when increasing from 60 nit to 80 nit. However, at 60 nit, the dimming mode needs to be switched, at this time, the dimming mode is switched from one mode to another mode, and the switching point flicker occurs, which is due to the imperfect matching between the two dimming mechanisms or the system response delay, resulting in the unstable or flickering phenomenon of the light source luminance in a short time. Wherein, nit is a unit of physical quantity representing the luminous intensity of the light emitting body surface. Specifically, 1 nit is equal to 1 candela per square meter (cd / m 2 ) Wherein, candela is a basic unit for measuring luminous intensity, and square meter is a unit for measuring area.

[0052] The embodiment of the present application specifically improves the switching mode of the dimming mode. Specifically, in addition to the original DC and PWM hybrid dimming working state, a group of working states for full-range PWM dimming are configured, when the luminance adjustment instruction involves the switching of the dimming mode, the mode is switched to full-range PWM dimming and dimming is performed in the full-range PWM area, and then the original hybrid dimming mode is switched back after the dimming is completed, thereby avoiding the switching between the PWM dimming mode and the DC dimming mode in the luminance adjustment process, and thus avoiding the flicker problem of the DC and PWM hybrid dimming.

[0053] The embodiment of the present application determines the current dimming mode and the current luminance value of the screen, receives a luminance adjustment instruction, determines a target dimming mode according to the luminance adjustment instruction, and adjusts the screen from the current luminance value to a target luminance value according to the current dimming mode and the target dimming mode. Thus, the switching point flicker problem in the switching process of different dimming modes can be solved.

[0054] Figure 2 A flowchart of a screen luminance adjustment control method according to an embodiment of the present application is shown, which includes the following steps:

[0055] Step S100, determining the current dimming mode and the current luminance value of the screen.

[0056] In this embodiment, the screen supports two different dimming modes, i.e. the first dimming mode and the second dimming mode. In this embodiment, the first dimming mode is taken as the DC dimming mode, and the second dimming mode is taken as the PWM dimming mode as an example for illustration.

[0057] The current brightness value of the screen is specifically the brightness value of the screen before dimming, and the current dimming mode of the screen is specifically the dimming mode currently adopted by the screen, and is specifically the dimming mode corresponding to the current brightness value of the screen. For example, the screen adopts the PWM dimming mode when the brightness is less than or equal to 100 nit, and adopts the DC dimming mode when the brightness is greater than 100 nit, and the following is described by taking this as an example. When the brightness of the screen is 110 nit, it is determined that the current dimming mode of the screen is the DC dimming mode, and the current brightness value is 110 nit. It should be noted that, in addition to obtaining the current dimming mode according to the current brightness value, the current dimming mode of the screen can also be directly obtained, and the embodiments of the present application do not limit this.

[0058] Step S200, receiving a brightness adjustment instruction.

[0059] The brightness adjustment instruction is used to adjust the screen brightness to a target brightness value. The brightness instruction can be adjusted by user input, for example, by sliding the brightness button. It can also be automatically adjusted by the electronic device according to the environmental changes, and the embodiments of the present application do not limit this.

[0060] Step S300, determining a target dimming mode according to the brightness adjustment instruction.

[0061] Specifically, the target dimming mode is a first dimming mode or a second dimming mode. In some embodiments, the first dimming mode is a DC dimming mode, and the second dimming mode is a PWM dimming mode.

[0062] In some embodiments, the target dimming mode is determined according to the target brightness value. Specifically, the brightness adjustment instruction includes a target brightness value, and by pre-determining a predetermined value for switching the dimming mode, in response to the target brightness value being less than or equal to the predetermined value, the target dimming mode is determined to be the second dimming mode. In response to the target brightness value being greater than the predetermined value, the target dimming mode is determined to be the first dimming mode. The predetermined value can be set according to actual conditions. For example, assuming that the predetermined value is 100 nit, when the target brightness value is 80 nit, since the target brightness value is less than 100 nit, the target dimming mode is determined to be the PWM dimming mode. When the target brightness value is 120 nit, since the target brightness value is greater than 100 nit, the target dimming mode is determined to be the DC dimming mode.

[0063] In some embodiments, the target dimming mode is obtained according to the brightness adjustment instruction. Specifically, the target dimming mode is included in the brightness adjustment instruction.

[0064] It should be understood that the target dimming mode can also be obtained in other ways, and the embodiments of the present application do not repeat this.

[0065] Step S400, adjusting the screen from the current brightness value to a target brightness value according to the current dimming mode and the target dimming mode.

[0066] Specifically, a dimming mode to be used is determined according to the current dimming mode and the target dimming mode, and the screen is adjusted from the current brightness value to the target brightness value according to the dimming mode determined in this way. Specifically, according to different combinations of the types of the current dimming mode and the target dimming mode, three dimming modes can be determined, specifically: the current dimming mode is the same as the target dimming mode; the current dimming mode is a DC dimming mode and the target dimming mode is a PWM dimming mode; the current dimming mode is a PWM dimming mode and the target dimming mode is a DC dimming mode. The three dimming modes will be described below.

[0067] Regarding the first case, the current dimming mode is the same as the target dimming mode, that is, the current dimming mode and the target dimming mode are both DC dimming modes, or the current dimming mode and the target dimming mode are both PWM dimming modes. At this time, since the dimming mode switching is not involved in the dimming process, only the current dimming mode needs to be used for brightness adjustment. For example, the current brightness value is 120 nit and the target brightness value is 110 nit, at this time, the current dimming mode and the target dimming mode are both DC dimming modes, therefore, the brightness of the screen is adjusted from 120 nit to 110 nit using the DC dimming mode, and no additional steps are needed to be set.

[0068] Regarding the second case, the current dimming mode is a DC dimming mode and the target dimming mode is a PWM dimming mode. At this time, the brightness adjustment needs to be performed using the flowchart as shown in Figure 3 Figure 3 which includes the following steps:

[0069] Step S410, keeping the current brightness value to switch the working state of the screen dimming from the first working state to the second working state to switch the dimming mode to the second dimming mode.

[0070] ​Specifically, since the screen is in the first working state, the first dimming mode corresponds to the DC dimming mode, and therefore two working states (HFR0, HFR1) of screen dimming need to be configured, i.e., the first working state (HFR0) and the second working state (HFR1). Among them, the first working state is a hybrid dimming mode, i.e., in the first working state, the screen can be either in the DC dimming mode or in the PWM dimming mode. The second working state HFR1 is specifically a full-range PWM dimming mode. Specifically, the first working state is a DC and PWM hybrid dimming mode under normal circumstances, and the PWM dimming mode is adopted when the brightness value is less than or equal to a predetermined value, and the DC dimming mode is adopted when the brightness value is greater than the predetermined value. The second working state is a full-range PWM dimming mode, i.e., the PWM dimming mode is adopted for dimming at any brightness. In the case where the current brightness value is unchanged, the working state of screen dimming is switched from the first working state to the second working state, and at this time, since the second working state is a full-range PWM (second dimming mode) dimming, the dimming mode is switched from the first dimming mode to the second dimming mode.

[0071] Taking the current brightness value as 120 nit and the target brightness value as 70 nit as an example, specifically, the dimming mode of the screen needs to be switched from the DC dimming mode to the PWM dimming mode under the condition that the brightness is unchanged. Therefore, the working state of screen dimming is adjusted from the first working state to the second working state, and at this time, since the working state of screen dimming is a full-range PWM dimming mode second working state, the dimming mode is switched from the DC dimming mode to the PWM dimming mode.

[0072] Step S420, adjusting the screen from the current brightness value to the target brightness value in the second dimming mode.

[0073] Specifically, in the second working state, the screen is adjusted from the current brightness value to the target brightness value according to the second dimming mode, and the brightness value and the dimming mode are adjusted to the target brightness value and the target dimming mode, respectively.

[0074] Step S430, keeping the target brightness value to switch the working state of screen dimming from the second working state to the first working state.

[0075] Specifically, since the working state of the screen in normal working state is the first working state, finally, the working state of screen dimming needs to be adjusted from the second working state back to the first working state, i.e., the entire dimming process is completed, and the final state is the second dimming mode in the first working state, and the brightness value is the target brightness value.

[0076] Specifically, in the second working state, the screen is adjusted from 120 nit to 70 nit according to the PWM dimming mode, and after the dimming is completed, the working state of the screen dimming is adjusted from the second working state to the first dimming mode in the normal state.

[0077] The schematic diagram of the signal and the change of the working state in the second case is shown in Figure 4 The schematic diagram includes an interrupt signal (TE), a brightness control (EM, emission) signal, and a working state (HFR). For the EM signal, when the EM signal is at a low level, the screen is in the on state, and when the EM signal is at a high level, the screen is in the off state.

[0078] As shown in Figure 4 As shown in Figure 4 There are four working states in total: state a, state b, state c, and state d. From state a to state b, the first working state (HFR0) is converted to the second working state (HFR1) with unchanged brightness, and the dimming mode is converted from the DC dimming mode to the PWM dimming mode. From state b to state c, the brightness is adjusted through the PWM dimming mode, specifically, the brightness is reduced to a target brightness value by adjusting the duty cycle. From state c to state d, the first working state is converted back to the first working state with unchanged brightness. Since the target brightness value is still corresponding to the PWM dimming mode, the EM signal does not change.

[0079] For the first working state and the second working state, since there is a brightness segment of the first dimming mode in the first working state, which is not the same as the second dimming mode in the second working state, the gray scale value needs to be configured. The gray scale value specifically refers to the range of brightness values of each pixel point when a color image is converted to a black and white image in computer image processing. These brightness values are usually represented in numerical form, ranging from 0 to 255, where 0 represents black and 255 represents white, and the intermediate values represent different levels of gray. Therefore, when configuring the gray scale value of the second working state according to the first working state, for the brightness segment of the first dimming mode in the first working state, since the dimming methods of the two working states for this brightness segment are not the same, the gray scale value of the second dimming mode needs to be configured according to the first dimming mode to ensure consistent display brightness in different working states.

[0080] Specifically, when the brightness is less than a predetermined value, the gray scale value of this part does not need to be reconfigured because the first working state and the second working state both use the PWM dimming mode. When the brightness value is greater than the predetermined value, that is, the DC dimming mode used by the first working state and the PWM dimming mode used by the second working state, at this time, the gray scale value in the second working state can be determined by using linear transformation or Gamma correction.

[0081] The gray scale value of the second dimming mode in the second working state is obtained by linear transformation of the gray scale value of the DC dimming mode in the first dimming mode, and is specifically:

[0082] G=α*G1+(1-α)*G2

[0083] G is the gray scale value of the second dimming mode in the second working state, G1 is the gray scale value of the first dimming mode in the first working state, and G2 is a predetermined reference gray scale value, which can be set according to actual needs, and the embodiments of the present application do not make any limitation on this.

[0084] Gamma correction is a widely used technology in the field of digital image processing and display. By adjusting the power function transformation of image pixel values, the brightness and contrast of the image are changed, so as to improve the visual effect of the image. In Gamma correction, the power function formula is used to describe the relationship between the input pixel value (I in ) and the output pixel value (I out ), and is specifically:

[0085] I out =I in γ

[0086] Where γ is the Gamma value, which is a nonlinear parameter used to describe the relationship between input and output.

[0087] Regarding the third case, the current dimming mode is the PWM dimming mode and the target dimming mode is the DC dimming mode. At this time, similar to the second case, the flowchart as shown in Figure 6 is used to adjust the brightness, Figure 5 which includes the following steps:

[0088] Step S440, keep the current brightness value and switch the screen dimming working state from the first working state to the second working state.

[0089] In the first working state, the screen is adjusted from the current brightness value to the target brightness value, which requires switching of the dimming mode, so the working state of screen dimming is switched from the first working state to the second working state for full-range PWM dimming. Specifically, the current brightness value is 80 nit, and the target brightness value is 130 nit. Since the dimming needs to pass through 100 nit, that is, a part of the dimming is performed by the DC dimming mode in the first working state, similar to the above case, the working state of screen dimming needs to be adjusted from the first working state to the second working state. Since the first working state is full-range PWM dimming mode, the screen brightness can be adjusted from 80 nit to 130 nit by full-range PWM dimming mode.

[0090] Step S450, adjusting the screen from the current brightness value to the target brightness value in the second dimming mode.

[0091] Since the second working state is full-range PWM (second dimming mode) dimming, the current brightness value can be adjusted to the target brightness value according to the second working state, without switching the dimming mode during dimming.

[0092] Step S460, switching the working state of screen dimming from the second working state to the first working state to switch the dimming mode to the first dimming mode while maintaining the target brightness value.

[0093] Specifically, the working state of screen dimming is switched from the second working state to the first working state while maintaining the screen brightness at the target brightness value. At this time, since the brightness value is in the first dimming mode, the switching from the second dimming mode to the first dimming mode is realized.

[0094] Specifically, the brightness value at this time has been adjusted to the target brightness value of 130 nit. Since the dimming mode corresponding to 130 nit is DC dimming mode, the dimming mode needs to be adjusted to DC dimming mode. Since the working state of screen dimming is the second working state, the second working state needs to be switched to the first working state. At this time, since the brightness of 130 nit corresponds to the first working state, the switching of the dimming mode to the first dimming mode is realized, that is, the entire dimming process is completed.

[0095] The schematic diagram of the signal and the change of the working state of the third case is shown in Figure 6 , which is Figure 4 similar to Figure 6 , which is Figure 4 completely opposite to the process, so Figure 6 will not be described here.

[0096] The embodiment of the present application determines a current dimming mode and a current brightness value of a screen, receives a brightness adjustment instruction, determines a target dimming mode according to the brightness adjustment instruction, and adjusts the screen from the current brightness value to a target brightness value according to the current dimming mode and the target dimming mode. Thus, the switching point flicker problem in the process of switching between different dimming modes can be solved.

[0097] Figure 7 A schematic diagram of a screen brightness adjustment control device according to an embodiment of the present application is shown as follows, Figure 7 The device includes a current state determination unit 71, an instruction receiving unit 72, a target dimming mode determination unit 73, and an adjustment unit 74. The current state determination unit 71 is configured to determine a current dimming mode and a current brightness value of a screen. The instruction receiving unit 72 is configured to receive a brightness adjustment instruction. The target dimming mode determination unit 73 is configured to determine a target dimming mode according to the brightness adjustment instruction. The adjustment unit 74 is configured to adjust the screen from the current brightness value to a target brightness value according to the current dimming mode and the target dimming mode.

[0098] In some embodiments, the current dimming mode is one of a first dimming mode and a second dimming mode, and the target dimming mode is one of the first dimming mode and the second dimming mode.

[0099] The working state of the screen dimming includes a first working state and a second working state. The first working state is specifically a mixed dimming of the first dimming mode and the second dimming mode, and the second working state is specifically a dimming using the second dimming mode all the time.

[0100] Before receiving the brightness adjustment instruction, the working state of the screen dimming is the first working state. In the first working state, the first dimming mode is used for dimming when the brightness is greater than a predetermined value, and the second dimming mode is used for dimming when the brightness is less than or equal to the predetermined value.

[0101] In some embodiments, the first dimming mode is a direct current dimming mode, and the second dimming mode is a pulse width modulation dimming mode.

[0102] In some embodiments, the adjusting the screen from the current brightness value to the target brightness value according to the current dimming mode and the target dimming mode includes:

[0103] In response to the current dimming mode being the same as the target dimming mode, the screen is adjusted from the current brightness value to the target brightness value according to the current dimming mode.

[0104] In some embodiments, the adjusting the screen from the current brightness value to the target brightness value according to the current dimming mode and the target dimming mode comprises:

[0105] switching a working state of dimming the screen from the first working state to the second working state to switch the dimming mode to the second dimming mode in response to the current dimming mode being the first dimming mode and the target dimming mode being the second dimming mode;

[0106] adjusting the screen from the current brightness value to the target brightness value in the second dimming mode;

[0107] switching a working state of dimming the screen from the second working state to the first working state in response to the target brightness value.

[0108] In some embodiments, the adjusting the screen from the current brightness value to the target brightness value according to the current dimming mode and the target dimming mode comprises:

[0109] switching a working state of dimming the screen from the first working state to the second working state in response to the current dimming mode being the second dimming mode and the target dimming mode being the first dimming mode;

[0110] adjusting the screen from the current brightness value to the target brightness value in the second dimming mode;

[0111] switching a working state of dimming the screen from the second working state to the first working state in response to the target brightness value to switch the dimming mode to the first dimming mode.

[0112] In some embodiments, the first dimming mode and the second dimming mode are switched according to gray scale values, and the gray scale values of the second dimming mode are obtained by linearly transforming or gamma adjusting the gray scale values of the first dimming mode.

[0113] In some embodiments, the gray scale values of the second dimming mode are obtained by linearly transforming the gray scale values of the first dimming mode, specifically:

[0114] G = a * G1 + (1 - a) * G2

[0115] wherein G is the gray scale value of the second dimming mode, G1 is the gray scale value of the first dimming mode, and G2 is a predetermined reference gray scale value.

[0116] The embodiment of the present application determines a current dimming mode and a current brightness value of a screen, receives a brightness adjustment instruction, determines a target dimming mode according to the brightness adjustment instruction, and adjusts the screen from the current brightness value to a target brightness value according to the current dimming mode and the target dimming mode. Thus, the switching point flicker problem in the process of switching between different dimming modes can be solved.

[0117] The processor can be a central processing unit (CPU), and can also be other general-purpose processors, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. The general-purpose processor can be a microprocessor or any conventional processor, or the like. It should be noted that the processor can be a processor supporting an advanced RISC machine (ARM) architecture.

[0118] Optionally, the memory can include a program storage area and a data storage area, where the program storage area can store an operating system, application programs required by at least one function, and the like, and the data storage area can store data created according to the use of the control device. In addition, the memory can include a high-speed random access memory, and can also include a non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state memory device. In some embodiments, the memory can optionally include a memory disposed remotely with respect to the processor, and these remote memories can be connected to the control device through a network. Examples of the network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0119] In the description of the present specification, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0120] In addition, the terms "first", "second", etc. are used herein only to describe different instances, and do not imply or suggest relative importance or a number of the technical features indicated. Thus, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0121] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected, or can be communicated; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0122] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0123] It should be noted that although the steps of the method in the present application are described in a specific order in the accompanying drawings, this does not require or imply that the steps must be performed in this specific order, or that all the steps shown must be performed to achieve the desired result. In addition or alternatively, some steps can be omitted, a plurality of steps can be combined into one step, and / or one step can be divided into a plurality of steps, etc. The above drawings are only schematic illustrations of the processes included in the method according to the exemplary embodiments of the present application, and are not for limiting purposes. It is easy to understand that the processes shown in the above drawings do not indicate or limit the time sequence of the processes. In addition, it is also easy to understand that these processes can be performed synchronously or asynchronously, for example, in a plurality of modules.

[0124] The foregoing disclosure provides many different implementations or examples for carrying out different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0125] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A screen brightness adjustment control method, characterized by, The method comprises: determining a current dimming mode and a current brightness value of a screen, the current dimming mode being one of a first dimming mode and a second dimming mode; receiving a brightness adjustment instruction; determining a target dimming mode according to the brightness adjustment instruction, the target dimming mode being one of the first dimming mode and the second dimming mode; adjusting the screen from the current brightness value to a target brightness value according to the current dimming mode and the target dimming mode; wherein the working state of the screen dimming comprises a first working state and a second working state, the first working state being a mixed dimming of the first dimming mode and the second dimming mode, and the second working state being a dimming using the second dimming mode all the time; before receiving the brightness adjustment instruction, the working state of the screen dimming is the first working state, in which the first dimming mode is used for dimming when the brightness is greater than a predetermined value, and the second dimming mode is used for dimming when the brightness is less than or equal to the predetermined value; wherein the adjusting the screen from the current brightness value to the target brightness value according to the current dimming mode and the target dimming mode comprises: in response to the current dimming mode being the first dimming mode and the target dimming mode being the second dimming mode, keeping the current brightness value to switch the working state of the screen dimming from the first working state to the second working state to switch the dimming mode to the second dimming mode, adjusting the screen from the current brightness value to the target brightness value in the second dimming mode, keeping the target brightness value to switch the working state of the screen dimming from the second working state to the first working state, and / or in response to the current dimming mode being the second dimming mode and the target dimming mode being the first dimming mode, keeping the current brightness value to switch the working state of the screen dimming from the first working state to the second working state, adjusting the screen from the current brightness value to the target brightness value in the second dimming mode, keeping the target brightness value to switch the working state of the screen dimming from the second working state to the first working state to switch the dimming mode to the first dimming mode.

2. The method of claim 1, wherein, The first dimming mode is a direct current dimming mode, and the second dimming mode is a pulse width modulation dimming mode.

3. The method of claim 1, wherein, The adjusting the screen from the current brightness value to the target brightness value according to the current dimming mode and the target dimming mode comprises: in response to the current dimming mode being the same as the target dimming mode, adjusting the screen from the current brightness value to the target brightness value according to the current dimming mode.

4. The method of claim 1, wherein, The first dimming mode and the second dimming mode are switched according to gray scale values, and the gray scale values of the second dimming mode are obtained by linearly transforming or gamma adjusting the gray scale values of the first dimming mode.

5. The method of claim 4, wherein, The gray scale values of the second dimming mode are obtained by linearly transforming the gray scale values of the first dimming mode, specifically: wherein G is the gray scale value of the second dimming mode, G1 is the gray scale value of the first dimming mode, and G2 is a predetermined reference gray scale value.

6. A screen brightness adjustment control device, characterized by comprising: The device comprises: A current state determining unit is configured to determine a current dimming mode and a current brightness value of a screen, the current dimming mode being one of a first dimming mode and a second dimming mode; An instruction receiving unit is configured to receive a brightness adjustment instruction, the brightness adjustment instruction including a target brightness value; A target dimming mode determining unit is configured to determine a target dimming mode corresponding to the target brightness value, the target dimming mode being one of the first dimming mode and the second dimming mode; An adjusting unit is configured to adjust the screen from the current brightness value to the target brightness value according to the current dimming mode and the target dimming mode. The working state of the screen dimming includes a first working state and a second working state, the first working state being a mixed dimming of the first dimming mode and the second dimming mode, and the second working state being a dimming using the second dimming mode all the time; before receiving the brightness adjustment instruction, the working state of the screen dimming is the first working state, in which the first dimming mode is used for dimming when the brightness is greater than a predetermined value, and the second dimming mode is used for dimming when the brightness is less than or equal to the predetermined value. The adjusting according to the current dimming mode and the target dimming mode includes: in response to the current dimming mode being the first dimming mode and the target dimming mode being the second dimming mode, switching the working state of the screen dimming from the first working state to the second working state to switch the dimming mode to the second dimming mode while keeping the current brightness value, adjusting the screen from the current brightness value to the target brightness value in the second dimming mode, and switching the working state of the screen dimming from the second working state to the first working state while keeping the target brightness value; and / or in response to the current dimming mode being the second dimming mode and the target dimming mode being the first dimming mode, switching the working state of the screen dimming from the first working state to the second working state while keeping the current brightness value, adjusting the screen from the current brightness value to the target brightness value in the second dimming mode, and switching the working state of the screen dimming from the second working state to the first working state while keeping the target brightness value to switch the dimming mode to the first dimming mode.

7. An electronic device, comprising: The electronic device includes: a screen; a memory; a processor; The memory is configured to store one or more computer program instructions, and the one or more computer program instructions are executed by the processor to implement the method according to any one of claims 1-5.

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