CN116564247A - Screen brightness adjusting method, device, equipment, storage medium and program product - Google Patents
Screen brightness adjusting method, device, equipment, storage medium and program product Download PDFInfo
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- CN116564247A CN116564247A CN202310303216.4A CN202310303216A CN116564247A CN 116564247 A CN116564247 A CN 116564247A CN 202310303216 A CN202310303216 A CN 202310303216A CN 116564247 A CN116564247 A CN 116564247A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
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- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
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- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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Abstract
The application relates to a screen brightness adjustment method, device, apparatus, storage medium and program product. The method comprises the following steps: determining a brightness parameter and a use mode of a screen, if the brightness parameter meets the high brightness mode, determining a first direct current voltage corresponding to the brightness parameter, and applying the first direct current voltage to the corresponding pixel unit through a control circuit of each pixel unit of the screen; if the brightness parameter meets the low brightness mode and the use mode has eye protection requirements, determining a second direct current voltage corresponding to the brightness parameter according to the dimming parameter of the high brightness mode, and applying the second direct current voltage to the corresponding pixel unit through the control circuit; if the brightness parameter meets the low brightness mode and the use mode does not have the eye protection requirement, the pulse number of the electric signal output by the control circuit is reduced. The dimming mode can be increased based on the user demand by adopting the method, and the application range of the screen brightness adjusting method is widened.
Description
Technical Field
The present disclosure relates to the field of dimming technologies, and in particular, to a method, an apparatus, a device, a storage medium, and a program product for adjusting screen brightness.
Background
With the development of display technology, various screen brightness adjustment technologies, such as a pulse width modulation (Pulse Width Modulation, PWM) technology for adjusting screen brightness by changing the duty ratio of an electric signal, a Direct Current (DC) dimming technology for adjusting screen brightness by changing a voltage, and the like, have appeared.
Currently, a common method for adjusting the brightness of a screen is to use DC dimming in a higher brightness value range and PWM dimming in a lower brightness value range.
However, the current screen brightness adjusting method has the problems of single dimming mode and narrow application range.
Disclosure of Invention
The application provides a screen brightness adjusting method, a device, equipment, a storage medium and a program product, which can increase a dimming mode based on user requirements and widen the application range of the screen brightness adjusting method.
In a first aspect, the present application provides a method for adjusting screen brightness. The method comprises the following steps:
determining a brightness parameter and a use mode of a screen, if the brightness parameter meets the high brightness mode, determining a first direct current voltage corresponding to the brightness parameter, and applying the first direct current voltage to the corresponding pixel unit through a control circuit of each pixel unit of the screen;
If the brightness parameter meets the low brightness mode and the use mode has eye protection requirements, determining a second direct current voltage corresponding to the brightness parameter according to the dimming parameter of the high brightness mode, and applying the second direct current voltage to the corresponding pixel unit through the control circuit;
if the brightness parameter meets the low brightness mode and the use mode does not have the eye protection requirement, the pulse number of the electric signal output by the control circuit is reduced.
In one embodiment, the dimming parameter of the high brightness mode includes high brightness mode voltage data, the high brightness mode voltage data includes gamma voltage data corresponding to at least one high brightness value, and the gamma voltage data includes gamma voltages corresponding to a plurality of brightness units of the corresponding brightness value; the brightness unit is obtained by dividing brightness values according to gray scales; determining a second direct current voltage corresponding to the brightness parameter according to the dimming parameter of the high brightness mode, wherein the second direct current voltage comprises: and determining one or more brightness units matched with the brightness parameter according to the high brightness mode voltage data, and determining a second direct current voltage according to gamma voltages corresponding to the one or more brightness units.
In one embodiment, determining one or more luminance units matching the luminance parameter according to the high luminance mode voltage data, and determining the second dc voltage according to gamma voltages corresponding to the one or more luminance units includes: 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; and determining the gamma voltage corresponding to the brightness unit closest to the brightness parameter in the one or more brightness units matched with the brightness parameter as a second direct current voltage.
In one embodiment, reducing the number of pulses of the electrical signal output by the control circuit includes: and in unit time, adjusting N first pulse signals of the electric signal into a second pulse signal, wherein the high-level duration time of the N first pulse signals is equal to the high-level duration time of the second pulse signal.
In one embodiment, the screen is disposed on the electronic device, and the usage mode is a usage mode of the electronic device, where the usage mode includes at least one of an eye protection mode and a child mode.
In a second aspect, the present application further provides a screen brightness adjustment device. The device comprises:
the first direct current voltage applying module is used for determining the brightness parameter and the use mode of the screen, if the brightness parameter meets the high brightness mode, determining the first direct current voltage corresponding to the brightness parameter, and applying the first direct current voltage to the corresponding pixel unit through the control circuit of each pixel unit of the screen;
the second direct current voltage applying module is used for determining a second direct current 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 use mode has the eye protection requirement, and applying the second direct current voltage to the corresponding pixel unit through the control circuit;
And the reducing module is used for reducing the pulse number of the electric signal output by the control circuit if the brightness parameter meets the low brightness mode and the use mode does not have the eye protection requirement.
In a third aspect, the present application also provides a screen. The screen includes a plurality of pixel units and control circuits for the respective pixel units, each control circuit for:
determining a brightness parameter and a use mode of a screen, if the brightness parameter meets the high brightness mode, determining a first direct current voltage corresponding to the brightness parameter, and applying the first direct current voltage to the corresponding pixel unit through a control circuit of each pixel unit of the screen;
if the brightness parameter meets the low brightness mode and the use mode has eye protection requirements, determining a second direct current voltage corresponding to the brightness parameter according to the dimming parameter of the high brightness mode, and applying the second direct current voltage to the corresponding pixel unit through the control circuit;
if the brightness parameter meets the low brightness mode and the use mode does not have the eye protection requirement, the pulse number of the electric signal output by the control circuit is reduced.
In a fourth aspect, the present application also provides an electronic device. The electronic device comprises a screen as described in the third aspect above.
In a fifth aspect, the present application also provides a computer device. The computer device comprises a memory and a processor, wherein the memory stores a computer program, and the processor realizes the following steps when executing the computer program:
determining a brightness parameter and a use mode of a screen, if the brightness parameter meets the high brightness mode, determining a first direct current voltage corresponding to the brightness parameter, and applying the first direct current voltage to the corresponding pixel unit through a control circuit of each pixel unit of the screen;
if the brightness parameter meets the low brightness mode and the use mode has eye protection requirements, determining a second direct current voltage corresponding to the brightness parameter according to the dimming parameter of the high brightness mode, and applying the second direct current voltage to the corresponding pixel unit through the control circuit;
if the brightness parameter meets the low brightness mode and the use mode does not have the eye protection requirement, the pulse number of the electric signal output by the control circuit is reduced.
In a sixth aspect, the present application also provides a computer-readable storage medium. The computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:
Determining a brightness parameter and a use mode of a screen, if the brightness parameter meets the high brightness mode, determining a first direct current voltage corresponding to the brightness parameter, and applying the first direct current voltage to the corresponding pixel unit through a control circuit of each pixel unit of the screen;
if the brightness parameter meets the low brightness mode and the use mode has eye protection requirements, determining a second direct current voltage corresponding to the brightness parameter according to the dimming parameter of the high brightness mode, and applying the second direct current voltage to the corresponding pixel unit through the control circuit;
if the brightness parameter meets the low brightness mode and the use mode does not have the eye protection requirement, the pulse number of the electric signal output by the control circuit is reduced.
In a seventh aspect, the present application also provides a computer program product. The computer program product comprising a computer program which, when executed by a processor, performs the steps of:
determining a brightness parameter and a use mode of a screen, if the brightness parameter meets the high brightness mode, determining a first direct current voltage corresponding to the brightness parameter, and applying the first direct current voltage to the corresponding pixel unit through a control circuit of each pixel unit of the screen;
If the brightness parameter meets the low brightness mode and the use mode has eye protection requirements, determining a second direct current voltage corresponding to the brightness parameter according to the dimming parameter of the high brightness mode, and applying the second direct current voltage to the corresponding pixel unit through the control circuit;
if the brightness parameter meets the low brightness mode and the use mode does not have the eye protection requirement, the pulse number of the electric signal output by the control circuit is reduced.
The embodiment of the application provides a screen brightness adjusting method, device, equipment, storage medium and program product, which can determine brightness parameters and a use mode of a screen, when the brightness parameters meet a high brightness mode, determine a first direct current voltage corresponding to the brightness parameters, apply the first direct current voltage to corresponding pixel units through control circuits of all pixel units of the screen, and realize screen brightness adjustment in a DC dimming mode. When the brightness parameter meets the low brightness mode and the use mode has eye protection requirement, determining a second direct current voltage corresponding to the brightness parameter according to the dimming parameter of the high brightness mode, applying the second direct current voltage to the corresponding pixel unit through the control circuit, and realizing screen brightness adjustment in the same way through a DC dimming mode, so that the problem of visual fatigue caused by a PWM dimming mode is avoided. When the brightness parameter meets the low brightness mode and the use mode does not have eye protection requirement, the PWM dimming mode is adopted to adjust the brightness of the screen, meanwhile, the pulse number of the electric signal output by the control circuit is reduced, the frequency of screen stroboscopic is reduced, and visual fatigue is relieved to a certain extent.
According to the method provided by the embodiment of the application, the DC dimming mode is added under the low-brightness condition, and different dimming modes can be flexibly selected according to eye protection requirements, so that the problem that the dimming mode is single when the prior art adopts PWM dimming under the low-brightness condition and DC dimming under the high-brightness condition is solved. Specifically, under the low-brightness condition, the screen brightness can be adjusted by adopting a DC dimming mode based on the eye protection requirement of a user, so that the problem of visual fatigue caused by a PWM dimming mode is avoided, and a certain eye protection effect can be realized under the low-brightness condition. In addition, after the DC dimming mode in the low-brightness mode is added, the dimming parameters of the low-brightness mode do not need to be retested, the second direct-current voltage corresponding to the brightness parameters can be directly determined based on the pre-tested dimming parameters of the high-brightness mode, the complicated test is not needed to be carried out, the dimming parameters are determined, and the development cost is saved.
Drawings
FIG. 1 is a diagram of an application environment of a screen brightness adjustment method in one embodiment;
FIG. 2 is a flowchart of a method for adjusting screen brightness according to an embodiment;
FIG. 3 is a combined schematic diagram of the number of pulses of an electrical signal in one embodiment;
FIG. 4 is a graph of gamma2.2 according to one embodiment;
FIG. 5 is a flowchart of a screen brightness adjustment method according to an embodiment;
FIG. 6 is a schematic diagram showing the brightness parameter and gray scale value according to one embodiment;
FIG. 7 is a block diagram showing a structure of a screen brightness adjusting apparatus according to an embodiment;
fig. 8 is an internal structural diagram of a computer device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
The screen brightness adjusting method provided by the embodiment of the application can be applied to an application environment shown in fig. 1. Wherein the pixel unit 102 and the control circuit 104 are wired. The control circuit 104 may 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.
In one embodiment, as shown in fig. 2, a method for adjusting brightness of a screen is provided, where an execution body of the method may be a control circuit, may be a display module including a control circuit and a pixel unit, or may be a display screen including a display module, a touch layer, a transparent cover plate, and a piezoelectric ceramic sheet. Taking the control circuit in fig. 1 as an example, the method comprises the following steps:
Step 101, determining a brightness parameter and a use mode of a screen, if the brightness parameter meets the high brightness mode, determining a first direct current voltage corresponding to the brightness parameter, and applying the first direct current voltage to the corresponding pixel unit through a control circuit of each pixel unit of the screen.
The screen is arranged on the electronic equipment, for example, the screen can be a screen of the electronic equipment such as a mobile phone, a computer and the like; the brightness parameter is a target brightness value of the screen; the usage pattern may be a usage pattern of the electronic device, the usage pattern including at least one of an eye protection pattern and a child pattern.
In the embodiment of the application, the target brightness value is a brightness value obtained after brightness adjustment of the screen, and the target brightness of the screen required to be adjusted by the user can be determined based on triggering operation of the human on the brightness sliding bar of the electronic equipment; under the condition that the electronic equipment is set to change the screen brightness along with the ambient brightness, the ambient brightness measured by the light sensor can be acquired first, and then the target brightness required to be achieved by the screen is determined based on the corresponding relation between the ambient brightness and the screen brightness.
When the target brightness value is in the preset high brightness interval, the screen brightness is adjusted to the target brightness by changing the voltage value of the direct current voltage output by the control circuit in a DC dimming mode. That is, when the brightness parameter satisfies the high brightness mode, a first direct current voltage corresponding to the target brightness can be determined according to preset high brightness mode voltage data, and then the first direct current voltage is applied to each pixel unit of the screen through the control circuit, so that the screen brightness is adjusted to the target brightness.
The preset high-brightness mode voltage data comprise corresponding relations between high-brightness values and voltage values in a high-brightness interval.
For example, in the range of 2-200nit brightness adjustable by the screen, there are 8 brightness nodes of 2nit, 10nit, 50nit, 70nit, 110nit, 130nit, 170nit and 200nit, 110nit and above are high brightness values, and 110nit and below are low brightness values. The preset high brightness mode voltage data includes the corresponding relation between 110nit, 130nit, 170nit and 200nit and the voltage, and the corresponding relation is not a single corresponding relation between the high brightness value and the voltage, but includes a group of gamma voltages corresponding to each high brightness value. The group of gamma voltages comprises gamma voltages corresponding to a plurality of brightness units between 0 and the high brightness value.
Step 102, if the brightness parameter satisfies the low brightness mode and the usage mode has an eye protection requirement, determining a second direct current voltage corresponding to the brightness parameter according to the dimming parameter of the high brightness mode, and applying the second direct current voltage to the corresponding pixel unit through the control circuit.
In the embodiment of the present application, when the target brightness value is within the preset low brightness interval, the PWM dimming mode or the DC dimming mode may be determined according to the usage mode of the electronic device. Since the PWM dimming method has a problem of causing visual fatigue, when the usage mode of the electronic device has an eye protection requirement, for example, when the electronic device is in an eye protection mode or a child mode, the DC dimming method is used to adjust the brightness of the screen.
In one embodiment, since the dimming parameters of the high brightness mode are tested in advance, the dimming parameters of the high brightness mode may include the dimming parameters of each high brightness value, and the dimming parameters of each high brightness value may be a set of gamma voltages, where a set of gamma voltages includes gamma voltages corresponding to a plurality of brightness units between 0 and the high brightness value. Therefore, the second direct current voltage corresponding to the target brightness can also be determined through a group of gamma voltages corresponding to any one high brightness value. For example, among the plurality of luminance units corresponding to any one of the high luminance values, a gamma voltage corresponding to a luminance unit having a luminance value closest to the target luminance is determined as the second dc voltage.
Step 103, if the brightness parameter satisfies the low brightness mode and the usage mode does not have an eye protection requirement, reducing the pulse number of the electric signal output by the control circuit.
In the embodiment of the present application, since the DC dimming method has the problem of uneven display color under the low brightness condition, when the target brightness value is within the preset low brightness interval and the usage mode does not have the eye protection requirement, the PWM dimming method can be used to adjust the screen brightness.
In order to alleviate the problem of visual fatigue caused by the PWM dimming mode, the pulse number can be reduced under the condition of keeping the duty ratio of the electric signal output by the control circuit unchanged. For example, as shown in fig. 3, 3 pulse signals per unit time may be combined into 1 pulse signal, thereby reducing the frequency of screen strobe and alleviating visual fatigue to some extent.
According to the screen brightness adjusting method, the brightness parameters and the use modes of the screen can be determined, when the brightness parameters meet the high brightness modes, the first direct current voltage corresponding to the brightness parameters is determined, the first direct current voltage is applied to the corresponding pixel units through the control circuit of each pixel unit of the screen, and the screen brightness adjustment is achieved through the DC dimming mode. When the brightness parameter meets the low brightness mode and the use mode has eye protection requirement, determining a second direct current voltage corresponding to the brightness parameter according to the dimming parameter of the high brightness mode, applying the second direct current voltage to the corresponding pixel unit through the control circuit, and realizing screen brightness adjustment in the same way through a DC dimming mode, so that the problem of visual fatigue caused by a PWM dimming mode is avoided. When the brightness parameter meets the low brightness mode and the use mode does not have eye protection requirement, the PWM dimming mode is adopted to adjust the brightness of the screen, meanwhile, the pulse number of the electric signal output by the control circuit is reduced, the frequency of screen stroboscopic is reduced, and visual fatigue is relieved to a certain extent. According to the method provided by the embodiment of the application, the DC dimming mode is added under the low-brightness condition, and different dimming modes can be flexibly selected according to the brightness interval of the screen brightness and the eye protection requirement of a user, so that the problem that the dimming mode is single when the PWM dimming is adopted under the low-brightness condition and the DC dimming is adopted under the high-brightness condition in the prior art is solved. Specifically, under the low-brightness condition, the screen brightness can be adjusted by adopting a DC dimming mode based on the eye protection requirement of a user, so that the problem of visual fatigue caused by a PWM dimming mode is avoided, and a certain eye protection effect can be realized under the low-brightness condition. In addition, after the DC dimming mode in the low-brightness mode is added, the dimming parameters of the low-brightness mode do not need to be retested, the second direct-current voltage corresponding to the brightness parameters can be directly determined based on the pre-tested high-brightness mode dimming parameters, the complicated test is not needed to be added, the dimming parameters are determined, and the development cost is saved.
In the foregoing embodiments, a scheme of determining the second dc voltage is described, and in another embodiment of the present application, the dimming parameter of the high brightness mode may include high brightness mode voltage data, where the high brightness mode voltage data includes at least one gamma voltage data corresponding to a high brightness value, and the gamma voltage data includes gamma voltages corresponding to a plurality of brightness units of the corresponding brightness value; the brightness unit is obtained by dividing the brightness value according to gray scale; therefore, according to the dc voltage data corresponding to the luminance parameter in the pre-tested high-luminance mode, the second dc voltage corresponding to the luminance parameter in the low-luminance mode can be determined, which comprises the following steps:
and determining one or more brightness units matched with the brightness parameter according to the high brightness mode voltage data, and determining a second direct current voltage according to gamma voltages corresponding to the one or more brightness units.
In this embodiment of the present application, before adjusting the brightness of the screen, the gamma voltage data of each high brightness value may be tested. For each high luminance value, first, a luminance section from 0 to the high luminance value is divided into a plurality of gray scales. And then, taking the high brightness value as a brightness value corresponding to the maximum gray level, and calculating the brightness value (namely a brightness unit) corresponding to each gray level based on a preset gamma formula to obtain a plurality of brightness units. And then, regarding each brightness unit, taking the brightness unit as a target brightness value, adjusting the voltage value of the voltage output by the control circuit until the brightness of the pixel detected by the optical probe reaches the target brightness value, recording the voltage value at the moment as the gamma voltage corresponding to the brightness unit, and sequentially testing the gamma voltages corresponding to the brightness units to obtain gamma voltages corresponding to a plurality of brightness units with high brightness values, thereby obtaining gamma voltage data corresponding to the high brightness value. And finally, sequentially carrying out gamma voltage test on each high brightness value to obtain gamma voltage data corresponding to each high brightness value, and obtaining high brightness mode voltage data.
The index of the preset gamma formula is 2.2, which is illustrated by the high brightness value of 110nit, the gray scale number of 256 (0 th gray scale to 255 th gray scale): first, 110nit is used as a luminance unit corresponding to the 255 th gray level, and each gray level number is substituted in turn according to the following formula (1), so that a luminance unit corresponding to each gray level is calculated:
wherein L is max Namely, the luminance unit corresponding to the maximum gray level (i.e., 110 nit), and L is the luminance value corresponding to the x-th gray level. The gamma2.2 curve is shown in FIG. 4.
In one embodiment, a plurality of gray scales may be selected from 256 gray scales, for example, 25 gray scales are selected, and luminance units corresponding to the 25 gray scales are calculated to obtain 25 luminance units. Then, the voltage value of the voltage output by the control circuit is regulated, and gamma voltages corresponding to 25 brightness units are obtained through detection of an optical probe, so that 25 gamma voltages are obtained. Then, fitting 25 gamma voltages to obtain fitting results (formulas, curves and the like), taking the fitting results as gamma voltage data corresponding to a high brightness value 110nit, wherein the fitting results can represent the corresponding relation among gray scale, brightness units and gamma voltages, and then obtaining the gamma voltages corresponding to the brightness units according to the fitting results. And finally, sequentially carrying out gamma voltage test on each high brightness value to obtain fitting results corresponding to each high brightness value, and obtaining high brightness mode voltage data.
The high brightness mode voltage data obtained by the test is burnt into a screen integrated circuit (Integrated Circuit, IC) through one-time burning (One Time Programable, OTP) to be used as preset high brightness mode voltage data. When the screen brightness needs to be adjusted, preset high-brightness mode voltage data can be obtained from the IC and used as the basis for adjusting the screen brightness.
In this embodiment of the present application, when the DC dimming mode is used in the low brightness mode, gamma voltage data corresponding to a high brightness value may be optionally selected as the target voltage data, or gamma voltage data corresponding to a minimum high brightness value among a plurality of high brightness values may be selected as the target voltage data, and then a brightness unit closest to the brightness parameter is determined from a plurality of brightness units corresponding to the target voltage data, and a gamma voltage corresponding to the brightness unit is determined as the second DC voltage.
In one embodiment, for multiple groups of gamma voltage data corresponding to multiple high brightness values, a brightness unit closest to the brightness parameter is determined from each group of gamma voltage data, so as to obtain multiple candidate brightness units. And then, determining gamma voltage data corresponding to each candidate brightness unit according to each group of gamma voltage data to obtain a plurality of candidate gamma voltages. And finally, determining a second direct current voltage according to the plurality of candidate gamma voltages, for example, determining an average value, a median value or the like of the plurality of candidate gamma voltages as the second direct current voltage.
According to the method provided by the embodiment of the application, gamma voltages of a plurality of brightness units with high brightness values are tested before the brightness of the screen is regulated, high-brightness mode voltage data are obtained and are burnt into the screen integrated circuit, and under the high-brightness mode, the output voltage of the control circuit is determined when a DC dimming mode is adopted. In the screen brightness adjusting process, when the electronic equipment is in a low brightness mode and has eye protection requirements, and a DC dimming mode is needed, gamma voltage test is not needed to be conducted on each low brightness value in the low brightness mode, one or more brightness units matched with brightness parameters are directly determined based on high brightness mode voltage data obtained through the pre-test, and a second direct current voltage is determined according to gamma voltages corresponding to the one or more brightness units. According to the method provided by the embodiment of the application, after the DC dimming mode under the low-brightness mode is added, gamma test is not required to be carried out on each low-brightness value, and the second direct-current voltage corresponding to the brightness parameter can be directly determined based on the pre-tested high-brightness mode voltage data, so that the gamma voltage test time is shortened, the efficiency of screen brightness adjustment is improved, and the waste of OTP times is avoided.
The foregoing embodiments describe a scheme for determining the second dc voltage corresponding to the luminance parameter in the low luminance mode according to the high luminance mode voltage data. In another embodiment of the present application, the second dc voltage may be determined according to the gamma voltage of the luminance unit closest to the luminance parameter in the high-luminance mode voltage data, including the steps as shown in fig. 5:
step 201, determining, for each group of gamma voltage data, a luminance unit closest to the luminance parameter as a luminance unit matching the luminance parameter.
In the embodiment of the present application, after the high-brightness mode voltage data is obtained, for each group of gamma voltage data, the brightness unit closest to the brightness parameter is determined first, that is, the brightness unit matched with the brightness parameter, so that a plurality of brightness units matched with the brightness parameter can be obtained.
Taking gamma voltage data corresponding to 110nit as an example, a gray scale value corresponding to the brightness parameter can be obtained by calculating according to the above formula (1). For example, as shown in fig. 6, when the luminance parameter is 70nit, the gray-scale value 208 may be determined, and the gray-scale value 208 is substituted into the above formula (1), so that the luminance unit closest to the luminance parameter (i.e., the luminance unit matching the luminance parameter) in the group of gamma voltage data may be determined to be 70.266nit. And then determining the gamma voltage corresponding to 70.266nit according to the gamma voltage data to serve as a candidate gamma voltage. Finally, a plurality of candidate gamma voltages can be obtained for each group of gamma voltage data.
Step 202, determining a gamma voltage corresponding to a luminance unit closest to the luminance parameter among the one or more luminance units matched to the luminance parameter as a second dc voltage.
In the embodiment of the present application, in order to improve accuracy of the second dc voltage, for a plurality of luminance units matched with the luminance parameter, a luminance unit closest to the luminance parameter may be selected, and a gamma voltage corresponding to the luminance unit may be determined as the second dc voltage.
The method provided by the embodiment of the application can select the brightness unit closest to the brightness parameter from each group of gamma voltage data in the high-brightness mode voltage data as the brightness unit matched with the brightness parameter. And then, selecting the brightness unit closest to the brightness parameter from the brightness units matched with the brightness parameter again, and determining the gamma voltage corresponding to the brightness unit as a second direct current voltage. According to the embodiment of the application, through twice screening, the brightness unit closest to the brightness parameter in the high-brightness mode voltage data is finally screened out, and the accuracy of the determined second direct-current voltage is improved. And under the application of the more accurate second direct-current voltage, the screen brightness can be closest to the target brightness value (namely the brightness parameter), so that the reliability of the screen brightness adjusting method is improved.
In the foregoing embodiments, a scheme of reducing the number of pulses of the electrical signal output by the control circuit is described, and in another embodiment of the present application, the number of pulses may be reduced by adjusting the high level duration of the electrical signal, including the following:
and in unit time, adjusting N first pulse signals of the electric signal into a second pulse signal, wherein the high-level duration time of the N first pulse signals is equal to the high-level duration time of the second pulse signal.
In the embodiment of the application, in order to keep the brightness of the screen unchanged, the light emitting duration of the screen in unit time should be kept unchanged, that is, the duration of the high level of the electric signal output by the control circuit in unit time should be kept unchanged. Therefore, when the pulse number of the electric signal is reduced, the plurality of pulse signals (i.e., the first pulse signals) of the electric signal can be adjusted to one pulse signal (i.e., the second pulse signal), and the sum of the high-level duration of the plurality of first pulse signals is equal to the high-level duration of the second pulse signal, and the sum of the low-level duration of the plurality of first pulse signals is equal to the low-level duration of the second pulse signal.
According to the method provided by the embodiment of the application, when the PWM dimming mode is used, a plurality of pulse signals of the electric signal can be adjusted to be one pulse signal, meanwhile, the duty ratio of the electric signal is kept unchanged (the duration of the high level is kept unchanged), so that the pulse number of the electric signal is reduced under the condition that the brightness of a screen is kept unchanged, the frequency of a screen stroboscopic effect is reduced, and the problem of visual fatigue of a user caused by the stroboscopic effect is relieved to a certain extent.
It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.
Based on the same inventive concept, the embodiments of the present application also provide a screen brightness adjustment device for implementing the above-mentioned screen brightness adjustment method. The implementation of the solution provided by the device is similar to the implementation described in the above method, so the specific limitation of one or more embodiments of the screen brightness adjusting device provided below may refer to the limitation of the screen brightness adjusting method hereinabove, and will not be repeated herein.
In one embodiment, as shown in fig. 7, there is provided a screen brightness adjusting apparatus comprising: a first direct voltage application module 301, a second direct voltage application module 302, and a reduction module 303, wherein:
the first dc voltage applying module 301 is configured to determine a luminance parameter and a usage mode of the screen, determine a first dc voltage corresponding to the luminance parameter if the luminance parameter meets the high luminance mode, and apply the first dc voltage to the corresponding pixel unit through a control circuit of each pixel unit of the screen;
the second dc voltage applying module 302 is configured to determine a second dc voltage corresponding to the luminance parameter according to the dimming parameter of the high luminance mode if the luminance parameter meets the low luminance mode and the usage mode has an eye protection requirement, and apply the second dc voltage to the corresponding pixel unit through the control circuit;
the reducing module 303 is configured to reduce the number of pulses of the electrical signal output by the control circuit if the brightness parameter satisfies the low brightness mode and the usage mode does not have an eye protection requirement.
In one embodiment, the dimming parameter of the high brightness mode includes high brightness mode voltage data, the high brightness mode voltage data includes gamma voltage data corresponding to at least one high brightness value, and the gamma voltage data includes gamma voltages corresponding to a plurality of brightness units of the corresponding brightness value; the brightness unit is obtained by dividing brightness values according to gray scales; the second dc voltage application module 302 is specifically configured to determine one or more luminance units matching with the luminance parameter according to the high-luminance mode voltage data, and determine the second dc voltage according to gamma voltages corresponding to the one or more luminance units.
In one embodiment, the second dc voltage applying module 302 is further configured to determine, for each set of gamma voltage data, a luminance unit closest to the luminance parameter as a luminance unit matching the luminance parameter; and determining the gamma voltage corresponding to the brightness unit closest to the brightness parameter in the one or more brightness units matched with the brightness parameter as a second direct current voltage.
In one embodiment, the reducing module 303 is specifically configured to adjust N first pulse signals of the electrical signal to one second pulse signal in a unit time, where a high duration of the N first pulse signals is equal to a high duration of the second pulse signal.
In one embodiment, the screen is disposed on the electronic device, and the usage mode is a usage mode of the electronic device, and the usage mode includes at least one of an eye protection mode and a child mode.
The above-described respective modules in the screen brightness adjusting apparatus may be implemented in whole or in part by software, hardware, and a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, a computer device is provided, which may be a terminal, and the internal structure thereof may be as shown in fig. 8. The computer device includes a processor, a memory, an input/output interface, a communication interface, a display unit, and an input means. The processor, the memory and the input/output interface are connected through a system bus, and the communication interface and the display unit are connected to the system bus through the input/output interface. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The input/output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless mode can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a method of screen brightness adjustment. The display unit of the computer device is used for forming a visual picture, and can be a display screen, a projection device or a virtual reality imaging device. The display screen may be a liquid crystal display screen or an electronic ink display screen.
It will be appreciated by those skilled in the art that the structure shown in fig. 8 is merely a block diagram of some of the structures associated with the present application and is not limiting of the computer device to which the present application may be applied, and that a particular computer device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided comprising a memory and a processor, the memory having stored therein a computer program, the processor when executing the computer program performing the steps of:
determining a brightness parameter and a use mode of a screen, if the brightness parameter meets the high brightness mode, determining a first direct current voltage corresponding to the brightness parameter, and applying the first direct current voltage to the corresponding pixel unit through a control circuit of each pixel unit of the screen;
if the brightness parameter meets the low brightness mode and the use mode has eye protection requirements, determining a second direct current voltage corresponding to the brightness parameter according to the dimming parameter of the high brightness mode, and applying the second direct current voltage to the corresponding pixel unit through the control circuit;
if the brightness parameter meets the low brightness mode and the use mode does not have the eye protection requirement, the pulse number of the electric signal output by the control circuit is reduced.
In one embodiment, the dimming parameter of the high brightness mode includes high brightness mode voltage data, the high brightness mode voltage data includes gamma voltage data corresponding to at least one high brightness value, and the gamma voltage data includes gamma voltages corresponding to a plurality of brightness units of the corresponding brightness value; the brightness unit is obtained by dividing brightness values according to gray scales; the processor when executing the computer program also implements the steps of: and determining one or more brightness units matched with the brightness parameter according to the high brightness mode voltage data, and determining a second direct current voltage according to gamma voltages corresponding to the one or more brightness units.
In one embodiment, the processor when executing the computer program further performs the steps of: 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; and determining the gamma voltage corresponding to the brightness unit closest to the brightness parameter in the one or more brightness units matched with the brightness parameter as a second direct current voltage.
In one embodiment, the processor when executing the computer program further performs the steps of: and in unit time, adjusting N first pulse signals of the electric signal into a second pulse signal, wherein the high-level duration time of the N first pulse signals is equal to the high-level duration time of the second pulse signal.
In one embodiment, the screen is disposed on the electronic device, and the usage mode is a usage mode of the electronic device, and the usage mode includes at least one of an eye protection mode and a child mode.
In one embodiment, a computer readable storage medium is provided having a computer program stored thereon, which when executed by a processor, performs the steps of:
determining a brightness parameter and a use mode of a screen, if the brightness parameter meets the high brightness mode, determining a first direct current voltage corresponding to the brightness parameter, and applying the first direct current voltage to the corresponding pixel unit through a control circuit of each pixel unit of the screen;
if the brightness parameter meets the low brightness mode and the use mode has eye protection requirements, determining a second direct current voltage corresponding to the brightness parameter according to the dimming parameter of the high brightness mode, and applying the second direct current voltage to the corresponding pixel unit through the control circuit;
if the brightness parameter meets the low brightness mode and the use mode does not have the eye protection requirement, the pulse number of the electric signal output by the control circuit is reduced.
In one embodiment, the dimming parameter of the high brightness mode includes high brightness mode voltage data, the high brightness mode voltage data includes gamma voltage data corresponding to at least one high brightness value, and the gamma voltage data includes gamma voltages corresponding to a plurality of brightness units of the corresponding brightness value; the computer program when executed by the processor also performs the steps of: the brightness unit is obtained by dividing brightness values according to gray scales; and determining one or more brightness units matched with the brightness parameter according to the high brightness mode voltage data, and determining a second direct current voltage according to gamma voltages corresponding to the one or more brightness units.
In one embodiment, the computer program when executed by the processor further performs the steps of: 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; and determining the gamma voltage corresponding to the brightness unit closest to the brightness parameter in the one or more brightness units matched with the brightness parameter as a second direct current voltage.
In one embodiment, the computer program when executed by the processor further performs the steps of: and in unit time, adjusting N first pulse signals of the electric signal into a second pulse signal, wherein the high-level duration time of the N first pulse signals is equal to the high-level duration time of the second pulse signal.
In one embodiment, the screen is disposed on the electronic device, and the usage mode is a usage mode of the electronic device, and the usage mode includes at least one of an eye protection mode and a child mode.
In one embodiment, a computer program product is provided comprising a computer program which, when executed by a processor, performs the steps of:
determining a brightness parameter and a use mode of a screen, if the brightness parameter meets the high brightness mode, determining a first direct current voltage corresponding to the brightness parameter, and applying the first direct current voltage to the corresponding pixel unit through a control circuit of each pixel unit of the screen;
If the brightness parameter meets the low brightness mode and the use mode has eye protection requirements, determining a second direct current voltage corresponding to the brightness parameter according to the dimming parameter of the high brightness mode, and applying the second direct current voltage to the corresponding pixel unit through the control circuit;
if the brightness parameter meets the low brightness mode and the use mode does not have the eye protection requirement, the pulse number of the electric signal output by the control circuit is reduced.
In one embodiment, the dimming parameter of the high brightness mode includes high brightness mode voltage data, the high brightness mode voltage data includes gamma voltage data corresponding to at least one high brightness value, and the gamma voltage data includes gamma voltages corresponding to a plurality of brightness units of the corresponding brightness value; the computer program when executed by the processor also performs the steps of: the brightness unit is obtained by dividing brightness values according to gray scales; and determining one or more brightness units matched with the brightness parameter according to the high brightness mode voltage data, and determining a second direct current voltage according to gamma voltages corresponding to the one or more brightness units.
In one embodiment, the computer program when executed by the processor further performs the steps of: 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; and determining the gamma voltage corresponding to the brightness unit closest to the brightness parameter in the one or more brightness units matched with the brightness parameter as a second direct current voltage.
In one embodiment, the computer program when executed by the processor further performs the steps of: and in unit time, adjusting N first pulse signals of the electric signal into a second pulse signal, wherein the high-level duration time of the N first pulse signals is equal to the high-level duration time of the second pulse signal.
In one embodiment, the screen is disposed on the electronic device, and the usage mode is a usage mode of the electronic device, and the usage mode includes at least one of an eye protection mode and a child mode.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the various embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the various embodiments provided herein may include at least one of relational databases and non-relational databases. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic units, quantum computing-based data processing logic units, etc., without being limited thereto.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application shall be subject to the appended claims.
Claims (11)
1. A method for adjusting brightness of a screen, the method comprising:
determining a brightness parameter and a use mode of a screen, if the brightness parameter meets a high brightness mode, determining a first direct current voltage corresponding to the brightness parameter, and applying the first direct current voltage to a corresponding pixel unit through a control circuit of each pixel unit of the screen;
If the brightness parameter meets the low brightness mode and the use mode has eye protection requirements, determining a second direct current voltage corresponding to the brightness parameter according to the dimming parameter of the high brightness mode, and applying the second direct current voltage to a corresponding pixel unit through the control circuit;
and if the brightness parameter meets the low brightness mode and the use mode does not have the eye protection requirement, reducing the pulse number of the electric signal output by the control circuit.
2. The method of claim 1, wherein the dimming parameter of the high brightness mode comprises high brightness mode voltage data comprising gamma voltage data corresponding to at least one high brightness value, the gamma voltage data comprising gamma voltages corresponding to a plurality of brightness units of the corresponding brightness value; the brightness unit is obtained by dividing the brightness value according to gray scale;
the determining the second dc voltage corresponding to the brightness parameter according to the dimming parameter of the high brightness mode includes:
and determining one or more brightness units matched with the brightness parameter according to the high brightness mode voltage data, and determining the second direct current voltage according to gamma voltages corresponding to the one or more brightness units.
3. The method of claim 2, wherein determining one or more luminance units matching the luminance parameter from the high-luminance mode voltage data, and determining the second dc voltage from a gamma voltage corresponding to the one or more luminance units, comprises:
determining a brightness unit closest to the brightness parameter as a brightness unit matched with the brightness parameter for each group of gamma voltage data;
and determining gamma voltage corresponding to the 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.
4. The method of claim 1, wherein reducing the number of pulses of the electrical signal output by the control circuit comprises:
and in unit time, adjusting N first pulse signals of the electric signal into a second pulse signal, wherein the high-level duration of the N first pulse signals is equal to that of the second pulse signal.
5. The method of claim 1, wherein the screen is disposed on an electronic device, the usage mode is a usage mode of the electronic device, and the usage mode includes at least one of an eye-protection mode and a child mode.
6. A screen brightness adjustment device, the device comprising:
the first direct current voltage applying module is used for determining a brightness parameter and a use mode of a screen, if the brightness parameter meets a high brightness mode, determining a first direct current voltage corresponding to the brightness parameter, and applying the first direct current voltage to a corresponding pixel unit through a control circuit of each pixel unit of the screen;
the second direct current voltage applying module is used for determining a second direct current 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 use mode has eye protection requirements, and applying the second direct current voltage to the corresponding pixel unit through the control circuit;
and the reducing module is used for reducing the pulse number of the electric signal output by the control circuit if the brightness parameter meets the low brightness mode and the use mode does not have eye protection requirement.
7. A screen comprising a plurality of pixel units and control circuits for each of the pixel units, each control circuit configured to:
determining a brightness parameter and a use mode of a screen, if the brightness parameter meets a high brightness mode, determining a first direct current voltage corresponding to the brightness parameter, and applying the first direct current voltage to a corresponding pixel unit through a control circuit of each pixel unit of the screen;
If the brightness parameter meets the low brightness mode and the use mode has eye protection requirements, determining a second direct current voltage corresponding to the brightness parameter according to the dimming parameter of the high brightness mode, and applying the second direct current voltage to a corresponding pixel unit through the control circuit;
and if the brightness parameter meets the low brightness mode and the use mode does not have the eye protection requirement, reducing the pulse number of the electric signal output by the control circuit.
8. An electronic device comprising the screen of claim 7.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any one of claims 1 to 5 when the computer program is executed.
10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 5.
11. A computer program product comprising a computer program, characterized in that the computer program, when being executed by a processor, implements the steps of the method according to any one of claims 1 to 5.
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| CN202310303216.4A CN116564247A (en) | 2023-03-27 | 2023-03-27 | Screen brightness adjusting method, device, equipment, storage medium and program product |
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