Screen brightness adjustment methods, devices, equipment, storage media, and software products

Abstract

This application relates to a screen brightness adjustment method, apparatus, device, storage medium, and program product. The method includes: determining screen brightness parameters and usage modes; if the brightness parameters meet the requirements of a high brightness mode, determining a first DC voltage corresponding to the brightness parameters and applying the first DC voltage to the corresponding pixel units through control circuits of each pixel unit of the screen; if the brightness parameters meet the requirements of a low brightness mode, and the usage mode has eye protection requirements, determining a second DC voltage corresponding to the brightness parameters based on the dimming parameters of the high brightness mode, and applying the second DC voltage to the corresponding pixel units through control circuits; if the brightness parameters meet the requirements of a low brightness mode, and the usage mode does not have eye protection requirements, reducing the number of pulses in the electrical signal output by the control circuit. This method allows for the addition of dimming modes based on user needs, broadening the application scope of screen brightness adjustment methods.

Description

Technical Field

[0001] This application relates to the field of dimming technology, and in particular to a screen brightness adjustment method, apparatus, device, storage medium, and program product. Background Technology

[0002] With the development of display technology, various screen brightness adjustment technologies have emerged, such as pulse width modulation (PWM) technology, which adjusts screen brightness by changing the duty cycle of electrical signals, and direct current (DC) dimming technology, which adjusts screen brightness by changing voltage.

[0003] Currently, the common method for adjusting screen brightness is to use DC dimming in the higher brightness range and PWM dimming in the lower brightness range.

[0004] However, current screen brightness adjustment methods suffer from limited dimming modes and narrow application range. Summary of the Invention

[0005] This application provides a screen brightness adjustment method, apparatus, device, storage medium, and program product, which can add dimming modes based on user needs, thus broadening the application scope of the screen brightness adjustment method.

[0006] Firstly, this application provides a screen brightness adjustment method. The method includes:

[0007] Determine the screen's brightness parameters and usage mode. If the brightness parameters meet the high brightness mode, determine the first DC voltage corresponding to the brightness parameters and apply the first DC voltage to the corresponding pixel unit through the control circuit of each pixel unit of the screen.

[0008] If the brightness parameter meets the requirements of the low brightness mode and the usage mode has eye protection requirements, then the second DC voltage corresponding to the brightness parameter is determined according to the dimming parameter of the high brightness mode, and the second DC voltage is applied to the corresponding pixel unit through the control circuit.

[0009] If the brightness parameters meet the requirements of the low brightness mode and the usage mode does not require eye protection, then the number of pulses in the electrical signal output by the control circuit should be reduced.

[0010] In one embodiment, the dimming parameters of the high brightness mode include high brightness mode voltage data, which includes gamma voltage data corresponding to at least one high brightness value. The gamma voltage data includes gamma voltages corresponding to multiple brightness units of the corresponding brightness value. The brightness units are obtained by dividing the brightness values ​​according to grayscale. Determining the second DC voltage corresponding to the brightness parameter based on the dimming parameters of the high brightness mode includes: determining one or more brightness units matching the brightness parameter based on the high brightness mode voltage data, and determining the second DC voltage based on the gamma voltages corresponding to the one or more brightness units.

[0011] In one embodiment, determining one or more brightness units that match the brightness parameters based on high-brightness mode voltage data, and determining a second DC voltage based on the gamma voltage corresponding to the one or more brightness units, includes: for each set of gamma voltage data, determining the brightness unit closest to the brightness parameters as the brightness unit that matches the brightness parameters; and determining the gamma voltage corresponding to the brightness unit closest to the brightness parameters among the one or more brightness units that match the brightness parameters as the second DC voltage.

[0012] In one embodiment, reducing the number of pulses in the electrical signal output by the control circuit includes: adjusting N first pulse signals of the electrical signal into one second pulse signal per unit time, wherein the high-level duration of the N first pulse signals is equal to the high-level duration of the second pulse signal.

[0013] In one embodiment, the screen is disposed on the electronic device, and the usage mode is the usage mode of the electronic device, which includes at least one of eye protection mode and child mode.

[0014] Secondly, this application also provides a screen brightness adjustment device. The device includes:

[0015] The first DC voltage application module is used to determine the brightness parameters and usage mode of the screen. If the brightness parameters meet the high brightness mode, the first DC voltage corresponding to the brightness parameters is determined, and the first DC voltage is applied to the corresponding pixel unit through the control circuit of each pixel unit of the screen.

[0016] The second DC voltage application module is used to determine the second DC voltage corresponding to the brightness parameter based on the dimming parameter of the high brightness mode if the brightness parameter meets the low brightness mode and the usage mode has eye protection requirements, and apply the second DC voltage to the corresponding pixel unit through the control circuit.

[0017] The reduction module is used to reduce the number of pulses in the electrical signal output by the control circuit if the brightness parameters meet the requirements of the low brightness mode and the usage mode does not require eye protection.

[0018] Thirdly, this application also provides a screen. The screen includes a plurality of pixel units and control circuitry for each pixel unit, wherein each control circuitry is used for:

[0019] Determine the screen's brightness parameters and usage mode. If the brightness parameters meet the high brightness mode, determine the first DC voltage corresponding to the brightness parameters and apply the first DC voltage to the corresponding pixel unit through the control circuit of each pixel unit of the screen.

[0020] If the brightness parameter meets the requirements of the low brightness mode and the usage mode has eye protection requirements, then the second DC voltage corresponding to the brightness parameter is determined according to the dimming parameter of the high brightness mode, and the second DC voltage is applied to the corresponding pixel unit through the control circuit.

[0021] If the brightness parameters meet the requirements of the low brightness mode and the usage mode does not require eye protection, then the number of pulses in the electrical signal output by the control circuit should be reduced.

[0022] Fourthly, this application also provides an electronic device. This electronic device includes a screen as described in the third aspect above.

[0023] Fifthly, this application also provides a computer device. The computer device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to perform the following steps:

[0024] Determine the screen's brightness parameters and usage mode. If the brightness parameters meet the high brightness mode, determine the first DC voltage corresponding to the brightness parameters and apply the first DC voltage to the corresponding pixel unit through the control circuit of each pixel unit of the screen.

[0025] If the brightness parameter meets the requirements of the low brightness mode and the usage mode has eye protection requirements, then the second DC voltage corresponding to the brightness parameter is determined according to the dimming parameter of the high brightness mode, and the second DC voltage is applied to the corresponding pixel unit through the control circuit.

[0026] If the brightness parameters meet the requirements of the low brightness mode and the usage mode does not require eye protection, then the number of pulses in the electrical signal output by the control circuit should be reduced.

[0027] Sixthly, this application also provides a computer-readable storage medium. This computer-readable storage medium stores a computer program thereon, which, when executed by a processor, performs the following steps:

[0028] Determine the screen's brightness parameters and usage mode. If the brightness parameters meet the high brightness mode, determine the first DC voltage corresponding to the brightness parameters and apply the first DC voltage to the corresponding pixel unit through the control circuit of each pixel unit of the screen.

[0029] If the brightness parameter meets the requirements of the low brightness mode and the usage mode has eye protection requirements, then the second DC voltage corresponding to the brightness parameter is determined according to the dimming parameter of the high brightness mode, and the second DC voltage is applied to the corresponding pixel unit through the control circuit.

[0030] If the brightness parameters meet the requirements of the low brightness mode and the usage mode does not require eye protection, then the number of pulses in the electrical signal output by the control circuit should be reduced.

[0031] Seventhly, this application also provides a computer program product. This computer program product includes a computer program that, when executed by a processor, performs the following steps:

[0032] Determine the screen's brightness parameters and usage mode. If the brightness parameters meet the high brightness mode, determine the first DC voltage corresponding to the brightness parameters and apply the first DC voltage to the corresponding pixel unit through the control circuit of each pixel unit of the screen.

[0033] If the brightness parameter meets the requirements of the low brightness mode and the usage mode has eye protection requirements, then the second DC voltage corresponding to the brightness parameter is determined according to the dimming parameter of the high brightness mode, and the second DC voltage is applied to the corresponding pixel unit through the control circuit.

[0034] If the brightness parameters meet the requirements of the low brightness mode and the usage mode does not require eye protection, then the number of pulses in the electrical signal output by the control circuit should be reduced.

[0035] This application provides a screen brightness adjustment method, apparatus, device, storage medium, and program product. It can determine the screen's brightness parameters and usage mode. When the brightness parameters meet the high brightness mode, a first DC voltage corresponding to the brightness parameters is determined, and the first DC voltage is applied to the corresponding pixel unit through the control circuit of each pixel unit of the screen, achieving screen brightness adjustment through DC dimming. When the brightness parameters meet the low brightness mode, and the usage mode has eye protection requirements, a second DC voltage corresponding to the brightness parameters is determined according to the dimming parameters of the high brightness mode, and the second DC voltage is applied to the corresponding pixel unit through the control circuit, also achieving screen brightness adjustment through DC dimming, avoiding the visual fatigue problem caused by PWM dimming. When the brightness parameters meet the low brightness mode, and the usage mode does not have eye protection requirements, PWM dimming is used to adjust the screen brightness, while reducing the number of pulses in the electrical signal output by the control circuit, reducing the screen flicker frequency, and alleviating visual fatigue to a certain extent.

[0036] The method provided in this application adds a DC dimming mode under low brightness conditions and allows for flexible selection of different dimming modes based on eye protection needs. This solves the problem of the limited dimming modes in existing technologies that use PWM dimming under low brightness conditions and DC dimming under high brightness conditions. Specifically, under low brightness conditions, DC dimming can be used to adjust the screen brightness based on the user's eye protection needs to avoid visual fatigue caused by PWM dimming, achieving a certain eye protection effect even under low brightness conditions. Furthermore, by adding a DC dimming mode in low brightness mode, the method provided in this application eliminates the need to retest the dimming parameters for low brightness mode. It can directly determine the second DC voltage corresponding to the brightness parameters based on pre-tested high brightness mode dimming parameters, avoiding tedious and complex testing to determine dimming parameters and saving development costs. Attached Figure Description

[0037] Figure 1 This is an application environment diagram of the screen brightness adjustment method in one embodiment;

[0038] Figure 2 This is a flowchart illustrating a screen brightness adjustment method in one embodiment;

[0039] Figure 3 This is a schematic diagram illustrating the combination of the number of electrical signal pulses in one embodiment;

[0040] Figure 4 This is a schematic diagram of the gamma 2.2 curve in one embodiment;

[0041] Figure 5 This is another flowchart illustrating the screen brightness adjustment method in one embodiment;

[0042] Figure 6 This is a schematic diagram showing the correspondence between brightness parameters and grayscale values ​​in one embodiment;

[0043] Figure 7 This is a structural block diagram of a screen brightness adjustment device in one embodiment;

[0044] Figure 8 This is an internal structural diagram of a computer device in one embodiment. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0046] The screen brightness adjustment method provided in this application embodiment can be applied to, for example, Figure 1In the application environment shown, the pixel unit 102 and the control circuit 104 are wired together. The control circuit 104 can control the voltage applied to the pixel unit 102 by outputting an electrical signal, thereby controlling the brightness of the pixel unit 102 and thus the brightness of the screen.

[0047] In one embodiment, such as Figure 2 As shown, a screen brightness adjustment method is provided. The execution subject of this method can be a control circuit, a display module including a control circuit and pixel units, or a display screen including a display module, a touch layer, a transparent cover plate, and a piezoelectric ceramic sheet. This method is applied to... Figure 1 Taking the control circuit in the example, the explanation includes the following steps:

[0048] Step 101: Determine the screen brightness parameters and usage mode. If the brightness parameters meet the high brightness mode, determine the first DC voltage corresponding to the brightness parameters, and apply the first DC voltage to the corresponding pixel unit through the control circuit of each pixel unit of the screen.

[0049] The screen is located on an electronic device, such as a mobile phone or computer screen; the brightness parameter is the target brightness value of the screen; the usage mode can be the usage mode of the electronic device, including at least one of eye protection mode and child mode.

[0050] In this embodiment, the target brightness value is the brightness value after the screen brightness is adjusted. The target brightness of the screen to be adjusted by the user can be determined based on the trigger operation of the brightness slider on the electronic device. When the electronic device is set to change the screen brightness with the ambient brightness, the ambient brightness measured by the light sensor can be obtained first, and then the target brightness to be achieved by the screen can be determined based on the correspondence between the ambient brightness and the screen brightness.

[0051] When the target brightness value is within the preset high brightness range, DC dimming is used. This involves adjusting the screen brightness to the target brightness by changing the DC voltage output by the control circuit. Specifically, when the brightness parameters meet the high brightness mode requirements, the first DC voltage corresponding to the target brightness is determined based on preset high brightness mode voltage data. Then, the control circuit applies the first DC voltage to each pixel unit of the screen to adjust the screen brightness to the target brightness.

[0052] The preset high-brightness mode voltage data includes the correspondence between each high-brightness value and voltage value within the high-brightness range.

[0053] For example, within the adjustable brightness range of 2-200 nits, there are eight brightness levels: 2 nits, 10 nits, 50 nits, 70 nits, 110 nits, 130 nits, 170 nits, and 200 nits. 110 nits and above are considered high brightness values, while below 110 nits are considered low brightness values. The preset high brightness mode voltage data includes the correspondence between 110 nits, 130 nits, 170 nits, and 200 nits and voltage. This correspondence is not a simple one between high brightness values ​​and voltage, but rather includes a set of gamma voltages corresponding to each high brightness value. Each set of gamma voltages includes the gamma voltages corresponding to multiple brightness units from 0 to that high brightness value.

[0054] Step 102: If the brightness parameter meets the requirements of low brightness mode and the usage mode has eye protection requirements, then determine the second DC voltage corresponding to the brightness parameter according to the dimming parameter of high brightness mode, and apply the second DC voltage to the corresponding pixel unit through the control circuit.

[0055] In this embodiment, when the target brightness value is within a preset low brightness range, either PWM dimming or DC dimming can be used based on the usage mode of the electronic device. Since PWM dimming can cause eye strain, DC dimming is used to adjust screen brightness when the electronic device is used in an eye-protection mode, such as an eye-protection mode or a children's mode.

[0056] In one embodiment, since the dimming parameters of the high-brightness mode have been tested in advance, the dimming parameters of the high-brightness mode can include dimming parameters for each high-brightness value. Each high-brightness value's dimming parameter can be a set of gamma voltages, which includes gamma voltages corresponding to multiple brightness units from 0 to that high-brightness value. Therefore, the second DC voltage corresponding to the target brightness can also be determined using the set of gamma voltages corresponding to any high-brightness value. For example, the gamma voltage corresponding to the brightness unit whose brightness value is closest to the target brightness among the multiple brightness units corresponding to any high-brightness value can be determined as the second DC voltage.

[0057] Step 103: If the brightness parameters meet the requirements of the low brightness mode and the usage mode does not require eye protection, then reduce the number of pulses of the electrical signal output by the control circuit.

[0058] In this embodiment, since DC dimming has problems such as uneven color display under low brightness conditions, when the target brightness value is within the preset low brightness range and the usage mode does not have eye protection requirements, PWM dimming can be used to adjust the screen brightness.

[0059] To alleviate visual fatigue caused by PWM dimming, the number of pulses can be reduced while maintaining the duty cycle of the electrical signal output by the control circuit. For example, ... Figure 3 As shown, three pulse signals per unit time can be combined into one pulse signal, thereby reducing the frequency of screen flicker and alleviating visual fatigue to some extent.

[0060] The screen brightness adjustment method provided in this application embodiment can determine the screen brightness parameters and usage mode. When the brightness parameters meet the high brightness mode, a first DC voltage corresponding to the brightness parameters is determined, and the first DC voltage is applied to the corresponding pixel unit through the control circuit of each pixel unit of the screen, thereby achieving screen brightness adjustment through DC dimming. When the brightness parameters meet the low brightness mode, and the usage mode has eye protection requirements, a second DC voltage corresponding to the brightness parameters is determined according to the dimming parameters of the high brightness mode, and the second DC voltage is applied to the corresponding pixel unit through the control circuit, again achieving screen brightness adjustment through DC dimming, avoiding the visual fatigue problem caused by PWM dimming. When the brightness parameters meet the low brightness mode, and the usage mode does not have eye protection requirements, PWM dimming is used to adjust the screen brightness, while reducing the number of pulses of the electrical signal output by the control circuit, reducing the frequency of screen flicker, and alleviating visual fatigue to a certain extent. The method provided in this application embodiment adds a DC dimming mode under low brightness conditions, which can flexibly select different dimming modes according to the brightness range of the screen brightness and the user's eye protection needs, thereby solving the problem of the single dimming mode in the prior art that uses PWM dimming under low brightness conditions and DC dimming under high brightness conditions. Specifically, under low-brightness conditions, DC dimming can be used to adjust screen brightness based on the user's eye protection needs, avoiding visual fatigue caused by PWM dimming. This achieves a certain eye protection effect even under low-brightness conditions. Furthermore, the method provided in this application, by adding DC dimming in low-brightness mode, eliminates the need to retest the dimming parameters for low-brightness mode. It can directly determine the second DC voltage corresponding to the brightness parameters based on pre-tested high-brightness mode dimming parameters, avoiding the need for tedious and complex testing to determine dimming parameters and saving development costs.

[0061] The embodiments described above introduced a scheme for determining the second DC voltage. In another embodiment of this application, the dimming parameters of the high-brightness mode may include high-brightness mode voltage data, which includes gamma voltage data corresponding to at least one high-brightness value. The gamma voltage data includes gamma voltages corresponding to multiple brightness units of the corresponding brightness value. The brightness units are obtained by dividing the brightness value according to grayscale. Therefore, the second DC voltage corresponding to the brightness parameter in the low-brightness mode can be determined based on the DC voltage data corresponding to the brightness parameter in the pre-tested high-brightness mode, including the following steps:

[0062] Based on the high-brightness mode voltage data, determine one or more brightness units that match the brightness parameters, and determine the second DC voltage based on the gamma voltage corresponding to one or more brightness units.

[0063] In this embodiment, before adjusting the screen brightness, the gamma voltage data of each high brightness value can be tested. For each high brightness value, firstly, the brightness range from 0 to that high brightness value is divided into multiple gray levels. Then, using the high brightness value as the brightness value corresponding to the maximum gray level, the brightness value (i.e., brightness unit) corresponding to each gray level is calculated based on a preset gamma formula, resulting in multiple brightness units. Next, for each brightness unit, with that brightness unit as the target brightness value, the voltage value output by the control circuit is adjusted until the brightness of the pixel detected by the optical probe reaches the target brightness value. The voltage value at this time is recorded as the gamma voltage corresponding to that brightness unit. The gamma voltage corresponding to each brightness unit is tested sequentially to obtain the gamma voltage corresponding to multiple brightness units of that high brightness value, thus obtaining the gamma voltage data corresponding to that high brightness value. Finally, the gamma voltage is tested sequentially for each high brightness value to obtain the gamma voltage data corresponding to each high brightness value, thus obtaining the high brightness mode voltage data.

[0064] Using a high brightness value of 110 nit and a gray level of 256 (gray level 0 to gray level 255), and with the gamma formula having a preset exponent of 2.2, the following explanation is provided: First, 110 nit is taken as the brightness unit corresponding to the 255th gray level. According to the following formula (1), each gray level is substituted in turn to calculate the brightness unit corresponding to each gray level:

[0065]

[0066] Among them, L max This represents the luminance unit corresponding to the highest gray level (i.e., 110 nits), where L is the luminance value corresponding to the xth gray level. The gamma2.2 curve is shown below. Figure 4 As shown.

[0067] In one embodiment, multiple gray levels can be selected from 256 gray levels, for example, 25 gray levels, and the corresponding luminance units for these 25 gray levels are calculated to obtain 25 luminance units. Then, the voltage value of the output voltage of the control circuit is adjusted, and the gamma voltage corresponding to the 25 luminance units is obtained by detecting it with an optical probe, resulting in 25 gamma voltages. Next, the 25 gamma voltages are fitted to obtain the fitting result (formula, curve, etc.), and this fitting result is used as the gamma voltage data corresponding to the high brightness value of 110 nits. This fitting result can characterize the correspondence between gray levels, luminance units, and gamma voltages. Subsequently, the gamma voltage corresponding to each luminance unit can be obtained based on this fitting result. Finally, the gamma voltage is tested sequentially for each high brightness value to obtain the fitting result corresponding to each high brightness value, thus obtaining the high brightness mode voltage data.

[0068] The high-brightness mode voltage data obtained from the test is programmed into the integrated circuit (IC) of the screen using a one-time programmable (OTP) method, serving as the preset high-brightness mode voltage data. When it is necessary to adjust the screen brightness, the preset high-brightness mode voltage data can be obtained from the IC as the basis for screen brightness adjustment.

[0069] In this embodiment of the application, when using DC dimming in low brightness mode, the gamma voltage data corresponding to any high brightness value can be selected as the target voltage data, or the gamma voltage data corresponding to the smallest high brightness value among multiple high brightness values ​​can be selected as the target voltage data. Then, from the multiple brightness units corresponding to the target voltage data, the brightness unit that is closest to the brightness parameter is determined, and the gamma voltage corresponding to the brightness unit is determined as the second DC voltage.

[0070] In one embodiment, for multiple sets of gamma voltage data corresponding to multiple high brightness values, a brightness unit closest to the brightness parameter can be determined from each set of gamma voltage data, resulting in multiple candidate brightness units. Then, based on each set of gamma voltage data, the gamma voltage data corresponding to each candidate brightness unit is determined, resulting in multiple candidate gamma voltages. Finally, a second DC voltage is determined based on the multiple candidate gamma voltages; for example, the average or median value of the multiple candidate gamma voltages can be determined as the second DC voltage.

[0071] The method provided in this application tests the gamma voltage of multiple brightness units at each high brightness value before adjusting the screen brightness, obtaining high brightness mode voltage data, which is then burned into the screen integrated circuit. This data is used to determine the output voltage of the control circuit when using DC dimming in high brightness mode. During screen brightness adjustment, when the electronic device is in low brightness mode and eye protection is required, and DC dimming is needed, it is not necessary to retest the gamma voltage of each low brightness value in low brightness mode. Instead, one or more brightness units matching the brightness parameters are directly determined based on the pre-tested high brightness mode voltage data, and the second DC voltage is determined based on the gamma voltage corresponding to the one or more brightness units. By adding DC dimming in low brightness mode, the method provided in this application eliminates the need for gamma testing of each low brightness value. It can directly determine the second DC voltage corresponding to the brightness parameters based on the pre-tested high brightness mode voltage data, reducing gamma voltage testing time, improving the efficiency of screen brightness adjustment, and avoiding wasted OTP (Optical Time Point) cycles.

[0072] The embodiments described above introduced a scheme for determining the second DC voltage corresponding to the brightness parameter in the low brightness mode based on the high brightness mode voltage data. In another embodiment of this application, the second DC voltage can be determined based on the gamma voltage of the brightness unit closest to the brightness parameter in the high brightness mode voltage data, including methods such as... Figure 5 The steps shown are as follows:

[0073] Step 201: For each set of gamma voltage data, determine the brightness unit that is closest to the brightness parameter as the brightness unit that matches the brightness parameter.

[0074] In this embodiment of the application, after obtaining the high brightness mode voltage data, for each set of gamma voltage data, the brightness unit that is closest to the brightness parameter can be determined first, that is, the brightness unit that matches the brightness parameter, so that multiple brightness units that match the brightness parameter can be obtained.

[0075] Taking the gamma voltage data corresponding to 110 nits as an example, the grayscale value corresponding to the brightness parameter can be calculated first according to the above formula (1). For example, as Figure 6As shown, when the brightness parameter is 70 nit, the grayscale value can be determined to be 208. Substituting the grayscale value 208 back into equation (1) above, the brightness unit closest to the brightness parameter in this set of gamma voltage data (i.e., the brightness unit matching the brightness parameter) can be determined as 70.266 nit. Then, based on the gamma voltage data, the gamma voltage corresponding to 70.266 nit can be determined as a candidate gamma voltage. Finally, for each set of gamma voltage data, multiple candidate gamma voltages can be obtained.

[0076] Step 202: Determine the gamma voltage corresponding to the brightness unit that is closest to the brightness parameter among one or more brightness units that match the brightness parameter as the second DC voltage.

[0077] In this embodiment of the application, in order to improve the accuracy of the second DC voltage, for a plurality of brightness units that match the brightness parameters, the brightness unit that is closest to the brightness parameters can be selected, and the gamma voltage corresponding to the brightness unit is determined as the second DC voltage.

[0078] The method provided in this application selects the brightness unit closest to the brightness parameter from each set of gamma voltage data in the high-brightness mode voltage data, and uses it as the brightness unit matched with the brightness parameter. Then, it selects the brightness unit closest to the brightness parameter again from multiple brightness units matched with the brightness parameter, and determines the gamma voltage corresponding to this brightness unit as the second DC voltage. This application embodiment improves the accuracy of the determined second DC voltage by selecting the brightness unit closest to the brightness parameter in the high-brightness mode voltage data through two screenings. Moreover, under the application of a more accurate second DC voltage, the screen brightness can be closest to the target brightness value (i.e., the brightness parameter), improving the reliability of the screen brightness adjustment method.

[0079] The embodiments described above introduce a scheme to reduce the number of pulses in the electrical signal output by the control circuit. In another embodiment of this application, the number of pulses can be reduced by adjusting the duration of the high level of the electrical signal, including the following:

[0080] Within a unit of time, N first pulse signals of an electrical signal are adjusted into one second pulse signal, and the duration of the high level of the N first pulse signals is equal to the duration of the high level of the second pulse signal.

[0081] In this embodiment, to maintain constant screen brightness, the duration of screen illumination per unit time should remain constant, meaning the duration of the high-level electrical signal output by the control circuit per unit time should remain constant. Therefore, when reducing the number of pulses in the electrical signal, multiple pulse signals (i.e., the first pulse signal) can be adjusted into a single pulse signal (i.e., the second pulse signal), and the sum of the high-level durations of the multiple first pulse signals equals the high-level duration of the second pulse signal, and the sum of the low-level durations of the multiple first pulse signals equals the low-level duration of the second pulse signal.

[0082] The method provided in this application embodiment can adjust multiple pulse signals of electrical signals into one pulse signal when using PWM dimming mode, while keeping the duty cycle of the electrical signal unchanged (the duration of the high level unchanged), so as to reduce the number of pulses of the electrical signal while keeping the screen brightness unchanged, thereby reducing the frequency of screen flicker and alleviating the problem of user visual fatigue caused by flicker to a certain extent.

[0083] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0084] Based on the same inventive concept, this application also provides a screen brightness adjustment device for implementing the screen brightness adjustment method described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations in one or more screen brightness adjustment device embodiments provided below can be found in the limitations of the screen brightness adjustment method described above, and will not be repeated here.

[0085] In one embodiment, such as Figure 7 As shown, a screen brightness adjustment device is provided, including: a first DC voltage application module 301, a second DC voltage application module 302, and a reduction module 303, wherein:

[0086] The first DC voltage application module 301 is used to determine the brightness parameters and usage mode of the screen. If the brightness parameters meet the high brightness mode, the first DC voltage corresponding to the brightness parameters is determined, and the first DC voltage is applied to the corresponding pixel unit through the control circuit of each pixel unit of the screen.

[0087] The second DC voltage application module 302 is used to determine the second DC voltage corresponding to the brightness parameter according to the dimming parameter of the high brightness mode if the brightness parameter meets the low brightness mode and the usage mode has eye protection requirements, and apply the second DC voltage to the corresponding pixel unit through the control circuit.

[0088] The reduction module 303 is used to reduce the number of pulses of the electrical signal output by the control circuit if the brightness parameters meet the low brightness mode and the usage mode does not have eye protection requirements.

[0089] In one embodiment, the dimming parameters of the high brightness mode include high brightness mode voltage data, which includes gamma voltage data corresponding to at least one high brightness value. The gamma voltage data includes gamma voltages corresponding to multiple brightness units of the corresponding brightness value. The brightness units are obtained by dividing the brightness values ​​according to grayscale. The second DC voltage application module 302 is specifically used to determine one or more brightness units that match the brightness parameters based on the high brightness mode voltage data, and to determine the second DC voltage based on the gamma voltages corresponding to the one or more brightness units.

[0090] In one embodiment, the second DC voltage application module 302 is further configured to, for each set of gamma voltage data, determine the brightness unit closest to the brightness parameter as the brightness unit matching the brightness parameter; and determine the gamma voltage corresponding to the brightness unit closest to the brightness parameter among one or more brightness units matching the brightness parameter as the second DC voltage.

[0091] In one embodiment, the reduction module 303 is specifically used to adjust N first pulse signals of an electrical signal into one second pulse signal within a unit time, wherein the high-level duration of the N first pulse signals is equal to the high-level duration of the second pulse signal.

[0092] In one embodiment, the screen is disposed on an electronic device, and the usage mode is the usage mode of the electronic device, which includes at least one of eye protection mode and child mode.

[0093] Each module in the aforementioned screen brightness adjustment device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of a computer device in hardware form or independent of it, or stored in the memory of a computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0094] In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 8 As shown, the computer device includes a processor, memory, input / output interfaces, a communication interface, a display unit, and an input device. The processor, memory, and input / output interfaces are connected via a system bus, and the communication interface and display unit are also connected to the system bus via the input / output interfaces. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The input / output interfaces are used for exchanging information between the processor and external devices. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, NFC (Near Field Communication), or other technologies. When the computer program is executed by the processor, it implements a screen brightness adjustment method. The display unit is used to form a visually visible image and can be a display screen, a projection device, or a virtual reality imaging device. The display screen can be a liquid crystal display (LCD) or an e-ink display.

[0095] Those skilled in the art will understand that Figure 8 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0096] In one embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0097] Determine the screen's brightness parameters and usage mode. If the brightness parameters meet the high brightness mode, determine the first DC voltage corresponding to the brightness parameters and apply the first DC voltage to the corresponding pixel unit through the control circuit of each pixel unit of the screen.

[0098] If the brightness parameter meets the requirements of the low brightness mode and the usage mode has eye protection requirements, then the second DC voltage corresponding to the brightness parameter is determined according to the dimming parameter of the high brightness mode, and the second DC voltage is applied to the corresponding pixel unit through the control circuit.

[0099] If the brightness parameters meet the requirements of the low brightness mode and the usage mode does not require eye protection, then the number of pulses in the electrical signal output by the control circuit should be reduced.

[0100] In one embodiment, the dimming parameters of the high brightness mode include high brightness mode voltage data, which includes gamma voltage data corresponding to at least one high brightness value, and gamma voltage data includes gamma voltages corresponding to multiple brightness units of the corresponding brightness value; the brightness units are obtained by dividing the brightness values ​​according to grayscale; when the processor executes the computer program, it also implements the following steps: determining one or more brightness units that match the brightness parameters according to the high brightness mode voltage data, and determining a second DC voltage according to the gamma voltages corresponding to the one or more brightness units.

[0101] In one embodiment, when the processor executes the computer program, it further performs the following steps: for each set of gamma voltage data, determining the luminance unit closest to the luminance parameter as the luminance unit matched with the luminance parameter; and determining the gamma voltage corresponding to the luminance unit closest to the luminance parameter among one or more luminance units matched with the luminance parameter as the second DC voltage.

[0102] In one embodiment, when the processor executes the computer program, it further performs the following steps: within a unit time, adjusting N first pulse signals of an electrical signal into one second pulse signal, wherein the high-level duration of the N first pulse signals is equal to the high-level duration of the second pulse signal.

[0103] In one embodiment, the screen is disposed on an electronic device, and the usage mode is the usage mode of the electronic device, which includes at least one of eye protection mode and child mode.

[0104] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program performing the following steps when executed by a processor:

[0105] Determine the screen's brightness parameters and usage mode. If the brightness parameters meet the high brightness mode, determine the first DC voltage corresponding to the brightness parameters and apply the first DC voltage to the corresponding pixel unit through the control circuit of each pixel unit of the screen.

[0106] If the brightness parameter meets the requirements of the low brightness mode and the usage mode has eye protection requirements, then the second DC voltage corresponding to the brightness parameter is determined according to the dimming parameter of the high brightness mode, and the second DC voltage is applied to the corresponding pixel unit through the control circuit.

[0107] If the brightness parameters meet the requirements of the low brightness mode and the usage mode does not require eye protection, then the number of pulses in the electrical signal output by the control circuit should be reduced.

[0108] In one embodiment, the dimming parameters of the high brightness mode include high brightness mode voltage data, which includes gamma voltage data corresponding to at least one high brightness value, and gamma voltage data includes gamma voltages corresponding to multiple brightness units of the corresponding brightness value. When the computer program is executed by the processor, it further implements the following steps: the brightness unit is obtained by dividing the brightness value according to grayscale; one or more brightness units matching the brightness parameters are determined according to the high brightness mode voltage data; and a second DC voltage is determined according to the gamma voltages corresponding to the one or more brightness units.

[0109] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: for each set of gamma voltage data, determining the luminance unit closest to the luminance parameter as the luminance unit matched with the luminance parameter; and determining the gamma voltage corresponding to the luminance unit closest to the luminance parameter among one or more luminance units matched with the luminance parameter as the second DC voltage.

[0110] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: adjusting N first pulse signals of an electrical signal into one second pulse signal within a unit time, wherein the high-level duration of the N first pulse signals is equal to the high-level duration of the second pulse signal.

[0111] In one embodiment, the screen is disposed on an electronic device, and the usage mode is the usage mode of the electronic device, which includes at least one of eye protection mode and child mode.

[0112] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, performs the following steps:

[0113] Determine the screen's brightness parameters and usage mode. If the brightness parameters meet the high brightness mode, determine the first DC voltage corresponding to the brightness parameters and apply the first DC voltage to the corresponding pixel unit through the control circuit of each pixel unit of the screen.

[0114] If the brightness parameter meets the requirements of the low brightness mode and the usage mode has eye protection requirements, then the second DC voltage corresponding to the brightness parameter is determined according to the dimming parameter of the high brightness mode, and the second DC voltage is applied to the corresponding pixel unit through the control circuit.

[0115] If the brightness parameters meet the requirements of the low brightness mode and the usage mode does not require eye protection, then the number of pulses in the electrical signal output by the control circuit should be reduced.

[0116] In one embodiment, the dimming parameters of the high brightness mode include high brightness mode voltage data, which includes gamma voltage data corresponding to at least one high brightness value, and gamma voltage data includes gamma voltages corresponding to multiple brightness units of the corresponding brightness value. When the computer program is executed by the processor, it further implements the following steps: the brightness unit is obtained by dividing the brightness value according to grayscale; one or more brightness units matching the brightness parameters are determined according to the high brightness mode voltage data; and a second DC voltage is determined according to the gamma voltages corresponding to the one or more brightness units.

[0117] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: for each set of gamma voltage data, determining the luminance unit closest to the luminance parameter as the luminance unit matched with the luminance parameter; and determining the gamma voltage corresponding to the luminance unit closest to the luminance parameter among one or more luminance units matched with the luminance parameter as the second DC voltage.

[0118] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: adjusting N first pulse signals of an electrical signal into one second pulse signal within a unit time, wherein the high-level duration of the N first pulse signals is equal to the high-level duration of the second pulse signal.

[0119] In one embodiment, the screen is disposed on an electronic device, and the usage mode is the usage mode of the electronic device, which includes at least one of eye protection mode and child mode.

[0120] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0121] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.

[0122] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A method of adjusting the brightness of a screen, characterized in that, The method comprises: determining a brightness parameter of a screen and a use mode, if the brightness parameter meets a high brightness mode, determining a first direct current voltage corresponding to the brightness parameter according to dimming parameters of the high brightness mode, and applying the first direct current voltage to a corresponding pixel unit through a control circuit of each pixel unit of the screen; the dimming parameters of the high brightness mode comprise high brightness mode voltage data, the high brightness mode voltage data comprise gamma voltage data corresponding to at least one high brightness value, and the gamma voltage data comprise gamma voltages corresponding to a plurality of brightness units of a corresponding brightness value; the brightness units are obtained by dividing the brightness value according to gray scales; if the brightness parameter meets a low brightness mode and the use mode has eye protection requirements, determining one or more brightness units matched with the brightness parameter according to the high brightness mode voltage data, determining a second direct current voltage according to gamma voltages corresponding to the one or more brightness units, and applying the second direct current voltage to the corresponding pixel unit through the control circuit; if the brightness parameter meets a low brightness mode and the use mode does not have eye protection requirements, reducing a pulse number of an electrical signal output by the control circuit.

2. The method of claim 1, wherein, The determination of the one or more brightness units matched with the brightness parameter according to the high brightness mode voltage data and the determination of the second direct current voltage according to the gamma voltages corresponding to the one or more brightness units comprise: for each group of gamma voltage data, determining a brightness unit closest to the brightness parameter as a brightness unit matched with the brightness parameter; determining a gamma voltage corresponding to a brightness unit closest to the brightness parameter in the one or more brightness units matched with the brightness parameter as the second direct current voltage.

3. The method of claim 1, wherein, The reduction of the pulse number of the electrical signal output by the control circuit comprises: in a unit time, adjusting N first pulse signals of the electrical signal into one second pulse signal, and a high level duration of the N first pulse signals is equal to a high level duration of the second pulse signal.

4. The method of claim 1, wherein, The screen is arranged on an electronic device, the use mode is a use mode of the electronic device, and the use mode comprises at least one of an eye protection mode and a child mode.

5. A screen brightness adjusting apparatus, characterized by comprising: The device comprises: a first direct current voltage application module configured to determine a brightness parameter of a screen and a use mode, if the brightness parameter meets a high brightness mode, determine a first direct current voltage corresponding to the brightness parameter according to dimming parameters of the high brightness mode, and apply the first direct current voltage to a corresponding pixel unit through a control circuit of each pixel unit of the screen; the dimming parameters of the high brightness mode comprise high brightness mode voltage data, the high brightness mode voltage data comprise gamma voltage data corresponding to at least one high brightness value, and the gamma voltage data comprise gamma voltages corresponding to a plurality of brightness units of a corresponding brightness value; the brightness units are obtained by dividing the brightness value according to gray scales; a second direct current voltage application module, configured to, if the brightness parameter meets a low brightness mode and the use mode has eye protection requirement, determine one or more brightness units matched with the brightness parameter according to the high brightness mode voltage data, determine the second direct current voltage according to gamma voltages corresponding to the one or more brightness units, and apply the second direct current voltage to corresponding pixel units through the control circuit; a reduction module, configured to, if the brightness parameter meets the low brightness mode and the use mode does not have eye protection requirement, reduce the pulse number of the electrical signal output by the control circuit.

6. A screen, characterized by The screen comprises a plurality of pixel units and a control circuit of each pixel unit, and each control circuit is configured to: determine a brightness parameter and a use mode of a screen, if the brightness parameter meets a high brightness mode, determine a first direct current voltage corresponding to the brightness parameter according to dimming parameters of the high brightness mode, and apply the first direct current voltage to corresponding pixel units through the control circuit of each pixel unit of the screen; the dimming parameters of the high brightness mode comprise high brightness mode voltage data, the high brightness mode voltage data comprise gamma voltage data corresponding to at least one high brightness value, and the gamma voltage data comprise gamma voltages corresponding to a plurality of brightness units corresponding to a corresponding brightness value; the brightness units are obtained by dividing the brightness value according to gray scales; if the brightness parameter meets a low brightness mode and the use mode has eye protection requirement, determine one or more brightness units matched with the brightness parameter according to the high brightness mode voltage data, determine a second direct current voltage according to gamma voltages corresponding to the one or more brightness units, and apply the second direct current voltage to corresponding pixel units through the control circuit; if the brightness parameter meets the low brightness mode and the use mode does not have eye protection requirement, reduce the pulse number of the electrical signal output by the control circuit.

7. An electronic device, comprising: The screen comprises a plurality of pixel units and a control circuit of each pixel unit, and each control circuit is configured to:

8. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that, determine a brightness parameter and a use mode of a screen, if the brightness parameter meets a high brightness mode, determine a first direct current voltage corresponding to the brightness parameter according to dimming parameters of the high brightness mode, and apply the first direct current voltage to corresponding pixel units through the control circuit of each pixel unit of the screen; the dimming parameters of the high brightness mode comprise high brightness mode voltage data, the high brightness mode voltage data comprise gamma voltage data corresponding to at least one high brightness value, and the gamma voltage data comprise gamma voltages corresponding to a plurality of brightness units corresponding to a corresponding brightness value; the brightness units are obtained by dividing the brightness value according to gray scales; 9. A computer-readable storage medium having stored thereon a computer program, characterized in that, if the brightness parameter meets a low brightness mode and the use mode has eye protection requirement, determine one or more brightness units matched with the brightness parameter according to the high brightness mode voltage data, determine a second direct current voltage according to gamma voltages corresponding to the one or more brightness units, and apply the second direct current voltage to corresponding pixel units through the control circuit; 10. A computer program product comprising a computer program, characterized in that, if the brightness parameter meets the low brightness mode and the use mode does not have eye protection requirement, reduce the pulse number of the electrical signal output by the control circuit. The screen comprises a plurality of pixel units and a control circuit of each pixel unit, and each control circuit is configured to: determine a brightness parameter and a use mode of a screen, if the brightness parameter meets a high brightness mode, determine a first direct current voltage corresponding to the brightness parameter according to dimming parameters of the high brightness mode, and apply the first direct current voltage to corresponding pixel units through the control circuit of each pixel unit of the screen; the dimming parameters of the high brightness mode comprise high brightness mode voltage data, the high brightness mode voltage data comprise gamma voltage data corresponding to at least one high brightness value, and the gamma voltage data comprise gamma voltages corresponding to a plurality of brightness units corresponding to a corresponding brightness value; the brightness units are obtained by dividing the brightness value according to gray scales; if the brightness parameter meets a low brightness mode and the use mode has eye protection requirement, determine one or more brightness units matched with the brightness parameter according to the high brightness mode voltage data, determine a second direct current voltage according to gamma voltages corresponding to the one or more brightness units, and apply the second direct current voltage to corresponding pixel units through the control circuit; if the brightness parameter meets the low brightness mode and the use mode does not have eye protection requirement, reduce the pulse number of the electrical signal output by the control circuit. The screen comprises a plurality of pixel units and a control circuit of each pixel unit, and each control circuit is configured to: determine a brightness parameter and a use mode of a screen, if the brightness parameter meets a high brightness mode, determine a first direct current voltage corresponding to the brightness parameter according to dimming parameters of the high brightness mode, and apply the first direct current voltage to corresponding pixel units through the control circuit of each pixel unit of the screen; the dimming parameters of the high brightness mode comprise high brightness mode voltage data, the high brightness mode voltage data comprise gamma voltage data corresponding to at least one high brightness value, and the gamma voltage data comprise gamma voltages corresponding to a plurality of brightness units corresponding to a corresponding brightness value; the brightness units are obtained by dividing the brightness value according to gray scales; if the brightness parameter meets a low brightness mode and the use mode has eye protection requirement, determine one or more brightness units matched with the brightness parameter according to the high brightness mode voltage data, determine a second direct current voltage according to gamma voltages corresponding to the one or more brightness units, and apply the second direct current voltage to corresponding pixel units through the control circuit; if the brightness parameter meets the low brightness mode and the use mode does not have eye protection requirement, reduce the pulse number of the electrical signal output by the control circuit.

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