CN109243383B - Backlight brightness adjusting method of display screen and display screen device - Google Patents
Backlight brightness adjusting method of display screen and display screen device Download PDFInfo
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- CN109243383B CN109243383B CN201811328859.XA CN201811328859A CN109243383B CN 109243383 B CN109243383 B CN 109243383B CN 201811328859 A CN201811328859 A CN 201811328859A CN 109243383 B CN109243383 B CN 109243383B
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Abstract
The invention relates to the technical field of display, and discloses a backlight brightness adjusting method of a display screen and a display screen device, which are used for improving the visual experience of a user, wherein the method comprises the following steps: when the brightness of the environment where the display screen is located is determined to be changed, obtaining target backlight brightness matched with the current brightness of the environment; and adjusting the backlight brightness of the display screen for a plurality of times until the backlight brightness of the display screen is adjusted to the target backlight brightness, wherein the speed of each adjustment is determined by the last backlight brightness adjustment result immediately before the adjustment.
Description
Technical Field
The invention relates to the technical field of display, in particular to a backlight brightness adjusting method of a display screen and a display screen device.
Background
At present, most display screen devices such as smart phones and computers have the function of automatically adjusting backlight brightness, that is, when the illumination intensity changes, the backlight brightness of the display screen device also changes, for example, when the illumination is strong, the backlight brightness of the display screen device automatically becomes bright, and when the illumination is dark, the backlight brightness of the display screen device automatically becomes dark. However, in the existing automatic backlight brightness adjustment, if the illumination intensity of the environment where the display screen is located changes, the backlight brightness of the display screen can be adjusted at a fixed speed, and the uniform backlight brightness adjustment speed can make human eyes generate a certain degree of brightness jumping feeling when the illumination intensity of the environment where the display screen is located changes, so that the visual experience is poor.
Disclosure of Invention
The embodiment of the invention provides a backlight brightness adjusting method of a display screen and a display screen device, which are used for improving the visual experience of a user and avoiding the burden of brightness jump to the eyes of the user.
In a first aspect, an embodiment of the present invention provides a method for adjusting backlight brightness of a display screen, including:
when the brightness of the environment where the display screen is located is determined to be changed, obtaining target backlight brightness matched with the current brightness of the environment;
and adjusting the backlight brightness of the display screen for a plurality of times until the backlight brightness of the display screen is adjusted to the target backlight brightness, wherein the speed of each adjustment is determined by the last backlight brightness adjustment result immediately before the adjustment.
Optionally, the lower the backlight brightness of the display screen is, the slower the adjustment speed is, and the higher the backlight brightness of the display screen is, the faster the adjustment speed is.
Optionally, the method further includes:
for any one of the plurality of adjustments, obtaining a display screen backlight brightness after a last adjustment immediately before the any one adjustment;
acquiring the backlight brightness adjusting speed change rate of the display screen;
determining the adjusting speed of any one time of adjustment according to the change rate and the backlight brightness of the display screen;
and adjusting the backlight brightness of the display screen according to the determined adjusting speed.
Optionally, the adjusting the backlight brightness of the display screen according to the determined adjusting speed specifically includes:
obtaining the adjustment step of any adjustment according to the determined adjustment speed, wherein the adjustment step refers to the backlight brightness value of each adjustment;
and adjusting the backlight brightness of the display screen according to the adjusting step.
Optionally, the obtaining the backlight brightness adjustment speed change rate of the display screen specifically includes:
acquiring the maximum value and the minimum value of the backlight brightness adjusting speed of the display screen, and acquiring the maximum value and the minimum value of the backlight brightness of the display screen;
and obtaining the change rate of the backlight brightness adjusting speed according to the maximum value and the minimum value of the adjusting speed and the maximum value and the minimum value of the backlight brightness.
Optionally, the determining, according to the change rate and the backlight brightness of the display screen, an adjustment speed of any one adjustment is specifically:
by calculating: determining the adjustment speed of any one of the adjustments by Ramp _ rate _ k (bright-minBri) + minRate;
wherein, Ramp _ rate is the backlight Brightness adjusting speed, Ramp _ k is the backlight Brightness adjusting speed change rate, Brightness is the current backlight Brightness of the display screen, minBri is the minimum backlight Brightness adjustable by the display screen, and minRate is the minimum adjusting speed of the backlight Brightness of the display screen.
In a second aspect, an embodiment of the present invention provides a display screen device, including:
the acquisition module is used for acquiring target backlight brightness matched with the current brightness of the environment when the brightness of the environment where the display screen is located is determined to change;
and the backlight brightness adjusting module is used for adjusting the backlight brightness of the display screen for multiple times until the backlight brightness of the display screen is adjusted to the target backlight brightness, wherein the speed of each adjustment is determined by the last backlight brightness adjustment result immediately before the adjustment.
Optionally, the lower the backlight brightness of the display screen is, the slower the adjustment speed is, and the higher the backlight brightness of the display screen is, the faster the adjustment speed is.
Optionally, the backlight brightness adjusting module is further configured to:
for any one of the plurality of adjustments, obtaining a display screen backlight brightness after a last adjustment immediately before the any one adjustment;
acquiring the backlight brightness adjusting speed change rate of the display screen;
determining the adjusting speed of any one time of adjustment according to the change rate and the backlight brightness of the display screen;
and adjusting the backlight brightness of the display screen according to the determined adjusting speed.
Optionally, the backlight brightness adjusting module is further configured to:
obtaining the adjustment step of any adjustment according to the determined adjustment speed, wherein the adjustment step refers to the backlight brightness value of each adjustment;
and adjusting the backlight brightness of the display screen according to the adjusting step.
Optionally, the backlight brightness adjusting module is further configured to:
acquiring the maximum value and the minimum value of the backlight brightness adjusting speed of the display screen, and acquiring the maximum value and the minimum value of the backlight brightness of the display screen;
and obtaining the change rate of the backlight brightness adjusting speed according to the maximum value and the minimum value of the adjusting speed and the maximum value and the minimum value of the backlight brightness.
Optionally, the backlight brightness adjusting module is further configured to:
by calculating: determining the adjustment speed of any one of the adjustments by Ramp _ rate _ k (bright-minBri) + minRate;
wherein, Ramp _ rate is the backlight Brightness adjusting speed, Ramp _ k is the backlight Brightness adjusting speed change rate, Brightness is the current backlight Brightness of the display screen, minBri is the minimum backlight Brightness adjustable by the display screen, and minRate is the minimum adjusting speed of the backlight Brightness of the display screen.
In the embodiment of the invention, when the brightness of the environment where the display screen is located is determined to be changed, the target backlight brightness matched with the current brightness of the environment is obtained, the current backlight brightness adjusting speed is determined according to the current backlight brightness of the display screen, and then the adjusting speed corresponding to the next backlight brightness adjustment is determined according to the backlight brightness of the display screen after the current adjustment, namely, the adjusting speed at each time is determined by the backlight result adjusted immediately last time, so that the adjusting speed at each time is matched with the backlight brightness during the adjustment, the burden of light jump caused by the fact that in the prior art, the brightness jump is adjusted at the same speed aiming at different backlight brightness, and the visual experience of a user is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
Fig. 1 is a schematic view of an application scenario provided in an embodiment of the present invention;
fig. 2 is a flowchart of a method for adjusting backlight brightness of a display screen according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating exemplary backlight brightness adjustment according to the present invention;
FIG. 4 is a schematic diagram of a backlight brightness adjustment speed variation rate according to an embodiment of the present invention;
FIG. 5 is a table showing the backlight brightness, the backlight brightness adjustment speed and the adjusted backlight brightness value according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the technical solutions of the present invention. All other embodiments obtained by a person skilled in the art without any inventive work based on the embodiments described in the present application are within the scope of the protection of the technical solution of the present invention.
Some concepts related to the embodiments of the present invention are described below.
1) Backlight: is a form of illumination commonly used on LCD displays, usually from the side or back, to increase the illumination in low light environments and brightness on computer displays, liquid crystal screens, and to produce light in a manner similar to CRT displays.
2) Screen refresh frame rate: i.e., frame rate, refers to the frequency (rate) at which bitmap images, called frames, appear continuously on the display, the lower the refresh frequency, the more image flicker, pauses, and jitter.
In the automatic backlight brightness adjustment scheme in the prior art, the backlight brightness of the display screen is adjusted according to a backlight brightness grade table mainly by setting the backlight brightness grade table containing the illumination intensity and the backlight brightness mapping relation. However, the inventor of the present invention finds that, in the process of adjusting the backlight brightness of the display screen according to the existing backlight brightness level, the adjustment is performed according to a fixed adjustment speed, however, when the display screen suddenly goes from a dark place to a place with strong illumination intensity, or the display screen suddenly goes from a place with strong illumination intensity to a dark place, if the backlight brightness adjustment speeds are the same, human eyes can generate a sense of light jump, and further burden is caused to the human eyes, and the visual experience is poor.
Therefore, the inventor considers that the adaptive intensity of human eyes to different backlight brightness of the display screen is different, namely the human eyes have difference to light and shade visual adaptation, and the human eyes are more sensitive to backlight brightness change under dark ambient light; on the contrary, under the light of a bright environment, the human eyes are insensitive to the change of the backlight brightness, so that different adjusting speeds can be adopted for different backlight brightness of the display screen, the human eyes can be prevented from generating a light jumping feeling, and the adjusting speed of the backlight brightness can be improved.
Based on this, the embodiment of the present invention provides a method for adjusting backlight brightness of a display screen, where the method obtains a target backlight brightness matched with a current brightness of an environment, determines a current backlight brightness adjustment speed according to the current backlight brightness of the display screen, and then determines an adjustment speed corresponding to a next backlight brightness adjustment according to the backlight brightness of the display screen after the current adjustment, that is, the adjustment speed at each time is determined by a backlight result adjusted immediately last time, so that the adjustment speed at each time is matched with the backlight brightness during the adjustment, thereby avoiding a sense of light jump generated by human eyes, enabling human eyes to better adapt to changes in the backlight brightness, and improving visual experience of users.
Furthermore, the higher the backlight brightness is, the higher the adjustment speed is, so that the phenomenon that the brightness of human eyes jumps due to the change of the ambient brightness of the backlight is avoided, the burden on the human eyes is reduced, and meanwhile, the backlight adjustment speed is also improved, so that the visual experience of a user is further improved.
The backlight brightness adjusting method of the display screen in the embodiment of the present invention is applied to an application scenario as shown in fig. 1, where the application scenario includes a display screen device 10, an outdoor environment 1, and an indoor environment 2, where the display screen device 10 may be a terminal device with a display screen, such as a smart phone, an IPad, and a computer, and the brightness of the outdoor environment 1 is higher than that of the indoor environment 2.
When a user holds the display screen device 10 by hand and enters an indoor environment 2 with dark light (i.e., with low brightness) from an outdoor environment 1 with strong light (i.e., with high brightness), the display screen device 10 may adjust the brightness of the display screen for multiple times according to the backlight brightness adjusting method provided in the embodiment of the present invention until the backlight brightness of the display screen is adjusted to a target backlight brightness corresponding to the brightness of the indoor environment 2.
Another possible scenario is that when the display screen device 10 moves from the indoor environment 2 to the outdoor environment 1, i.e. from an environment with low brightness to an environment with high brightness, the backlight brightness adjustment of the display screen may also be performed according to the method in the embodiment of the present invention.
It should be noted that the above-mentioned application scenarios are only presented to facilitate understanding of the spirit and principles of the present invention, and the present invention is not limited in this respect. Rather, the embodiments of the present invention can be applied to any applicable scene in which the ambient brightness changes.
Referring to fig. 2, a method for adjusting backlight brightness of a display panel according to an embodiment of the present invention includes:
step 201: and when the brightness of the environment where the display screen is located is determined to be changed, obtaining the target backlight brightness matched with the current brightness of the environment.
The display screen in the embodiment of the present invention may be a display screen in a display screen device such as a smart phone, an iPad, or a computer, and is not particularly limited in the embodiment of the present invention.
In the embodiment of the present invention, after the brightness of the environment where the display screen is located changes, in order to enable the backlight brightness of the display screen to be adjusted to the backlight brightness corresponding to the environment brightness, whether the brightness of the environment where the display screen is currently located changes may be determined by an ambient light sensor disposed in the display screen device, if the brightness of the environment where the display screen is currently located is sensed by the ambient light sensor to change, the light condition of the current environment sensed by the ambient light sensor may be processed by a processing module of the display screen device to obtain the brightness of the environment where the display screen is currently located, and then the backlight brightness corresponding to the current environment brightness is determined according to a preset mapping relation table of the ambient brightness and the backlight brightness, where the corresponding backlight brightness is the target backlight brightness adjusted by the display screen.
Step 202: and adjusting the backlight brightness of the display screen for a plurality of times until the backlight brightness of the display screen is adjusted to the target backlight brightness, wherein the speed of each adjustment is determined by the last backlight brightness adjustment result immediately before the adjustment.
In the embodiment of the invention, in order to enable a user to adapt to the change of the backlight brightness of the display screen, when the backlight brightness of the display screen is adjusted to the target backlight brightness, the backlight brightness of the display screen can be gradually adjusted to the target backlight brightness in a mode of adjusting the backlight brightness of the display screen for a plurality of times, and the speed of adjusting the backlight brightness each time is determined by the result of adjusting the backlight brightness of the last time before the adjustment, so that the brightness adjusting speed of each time is matched with the backlight brightness of the display screen during the adjustment, the light jumping feeling of human eyes is avoided when the backlight brightness is changed, the burden of the eyes of the user is relieved, and the visual experience of the user is improved.
For example, assuming that the backlight brightness of the current display screen is 120, the current backlight brightness adjustment speed is 151, and the target backlight brightness of the display screen is 105, the backlight brightness of the display screen is adjusted to 115 according to the adjustment speed of 151, then the backlight brightness adjustment speed corresponding to the backlight brightness of the display screen being 115 is determined, if the backlight brightness of the display screen is 115, the corresponding backlight brightness adjustment speed is 146, the backlight brightness of the display screen is adjusted to 110 according to the backlight brightness adjustment speed of 146, then the adjustment speed corresponding to the backlight brightness of the display screen being 110 is determined, and if the backlight brightness of the display screen being 110 is 140, the backlight brightness of the display screen is adjusted to 105 according to the adjustment speed of 140.
Specifically, when the backlight brightness of the display screen is adjusted, if the current backlight brightness of the display screen is low and the target backlight brightness is high, the adjustment is performed according to the backlight brightness adjustment speed from slow to fast; if the current backlight brightness of the display screen is high and the target backlight brightness is low, the adjustment is performed according to the backlight brightness adjustment speed from high to low, that is, the lower the backlight brightness of the display screen is, the slower the adjustment speed is, and the higher the backlight brightness of the display screen is, the faster the adjustment speed is, so that a user can better adapt to the change of the backlight brightness of the display screen, and the visual experience of the user is improved. For example, when the brightness of the backlight of the display screen is adjusted from high to low, such as the brightness of the backlight of the display screen is adjusted from 120 to 105 in the above example, the speed of the adjustment of the backlight brightness is gradually reduced from 151 to 146 and then to 140, and the adjustment speed shows a trend of changing from fast to slow. Conversely, if the backlight brightness of the display screen is adjusted from 105 to 120, the speed of the backlight brightness adjustment is increased from 140 to 146 and then increased to 151, and the adjustment speed shows a trend of changing from slow to fast.
In an alternative implementation manner, in an embodiment of the present invention, the adjusting of the backlight brightness of the display screen may also be performed according to an implementation manner as shown in fig. 3, where the implementation manner shown in fig. 3 includes:
step 301: aiming at any one of the multiple times of adjustment, acquiring the backlight brightness of the display screen after the last adjustment immediately before the adjustment of any time;
step 302: acquiring the backlight brightness adjusting speed change rate of the display screen;
step 303: determining the adjusting speed of any one time of adjustment according to the change rate and the backlight brightness of the display screen;
step 304: and adjusting the backlight brightness of the display screen according to the determined adjusting speed.
In the embodiment of the present invention, when adjusting the backlight brightness of the display screen, the backlight brightness of the display screen after the previous backlight brightness adjustment, that is, the current backlight brightness of the display screen, and the backlight brightness adjustment speed change rate of the display screen may be obtained from the backlight brightness adjustment module in the display screen device. The display screen backlight brightness adjusting speed change rate is determined according to the maximum value and the minimum value of the backlight brightness of the display screen and the maximum value and the minimum value of the display screen backlight brightness adjusting speed.
Specifically, the rate of change of the backlight brightness adjustment speed of the display screen is a ratio of a difference between the maximum backlight brightness adjustment speed and the minimum backlight brightness adjustment speed of the display screen to a difference between the maximum backlight brightness and the minimum backlight brightness value of the display screen, that is, Ramp _ k ═ maxRate-minRate)/(maxBri-minBri), where minRate is a preset minimum backlight brightness adjustment speed, maxRate is a preset maximum backlight brightness adjustment speed, minBri is a preset minimum backlight brightness, maxBri is a preset maximum backlight brightness, and Ramp _ k is a rate of change of the backlight brightness adjustment speed. The backlight luminance adjustment speed change rate can be specifically seen in fig. 4, the display screen backlight luminance is represented by an X axis, the speed Ramp _ rate for adjusting the display screen backlight luminance is represented by a Y axis, and the Brightness is the display screen backlight luminance.
For example, assuming that the backlight luminance range of the display panel is [10,255], and the backlight luminance adjustment speed is [30,300], that is, the backlight luminance of the display panel is 255 at the maximum value and 10 at the minimum value, the backlight luminance adjustment speed is 300 at the maximum value and 30 at the minimum value, the backlight luminance adjustment speed of the display panel is (300-30)/(255-10), and the change rate Ramp _ k is equal to about 1.1.
In the embodiment of the invention, after the current backlight brightness of the display screen and the change rate of the backlight brightness adjusting speed of the display screen are obtained, the backlight brightness adjusting speed corresponding to the current backlight brightness can be determined according to the obtained change rate of the current backlight brightness of the display screen and the backlight brightness adjusting speed of the display screen. Specifically, the adjustment speed corresponding to the current backlight Brightness of the display screen may be determined according to a calculation formula, Ramp _ rate ═ Ramp _ k [ (Brightness-minBri) + minRate ], where Ramp _ rate is the speed of backlight Brightness adjustment, and Brightness is the display screen backlight Brightness.
For example, in the example above, assuming that the screen backlight luminance is 125, the screen backlight luminance 125, the rate of change of the backlight luminance adjustment speed 1.1, the minimum backlight luminance adjustment speed 30, and the minimum backlight luminance 10 are substituted into the calculation formula Ramp _ rate ═ Ramp _ k (bright-minBri) + minRate according to the calculation formula, and when the screen backlight luminance is 125, the corresponding backlight luminance adjustment speed is 157.
Further, after the backlight brightness adjusting speed corresponding to the current display screen backlight brightness is determined, the backlight brightness value to be adjusted can be determined according to the backlight brightness adjusting speed. Generally, the frame rate of screen refreshing of a display screen is 30fps, namely, the screen is refreshed every 33ms, which can be regarded as that the backlight brightness of the display screen is updated every 33ms, and according to the speed of backlight brightness adjustment and the period of backlight brightness updating of the display screen, the adjustment step of the backlight brightness of the display screen can be determined when the screen is refreshed every time, namely, the brightness value is adjusted every time the backlight brightness is adjusted, so that the backlight brightness of the display screen after the backlight brightness is adjusted can be determined according to the backlight brightness value.
For example, referring to fig. 5, in the above example, the rate of change of the backlight Brightness adjustment speed of the display screen is 1.1, x represents the backlight Brightness of the display screen, y represents the adjustment speed of the backlight Brightness of the display screen to be obtained, the maximum value and the minimum value of the backlight Brightness of the display screen are 255 and 10, the maximum value and the minimum value of the backlight Brightness adjustment speed are 300 and 30, respectively, and then the calculation formula Ramp _ rate ═ Ramp _ k ═ can be expressed as y ═ 1x +19 (bright-minBri) + minRate. Assuming that the Current backlight brightness (Current _ Bri) of the display screen is 110 and the Target backlight brightness (Target Bri) is 65, when the backlight brightness of the display screen is 110, the adjusting speed corresponding to the backlight brightness is 140 according to a calculation formula, performing first backlight brightness adjustment according to the backlight brightness adjusting speed of 140, wherein the backlight brightness value to be adjusted according to the speed is 5, and after the first backlight brightness adjustment, the backlight brightness of the display screen is 105; continuously calculating the corresponding backlight brightness adjusting speed of 135 when the backlight brightness of the display screen is 105 according to the formula, namely the adjusting speed of the second backlight brightness adjustment is 135, the backlight brightness value to be adjusted is 5, and the backlight brightness of the display screen is 100 after the second adjustment; and continuing to calculate according to the formula, when the backlight brightness of the display screen is 100, the corresponding backlight brightness adjusting speed is 129, that is, the speed of the third backlight brightness adjustment is 129, and the backlight brightness value to be adjusted is 4. The third backlight brightness adjustment is performed until the backlight brightness of the display screen is adjusted from 110 to 65 step by step, wherein the backlight brightness after the third backlight brightness adjustment is 96.
It should be noted here that, in order to facilitate the processing module in the display panel device to control and adjust the backlight brightness of the display panel, the backlight brightness value adjusted each time is rounded to an integer.
Therefore, by the method, when the brightness of the environment where the display screen is located is determined to be changed, the target backlight brightness matched with the current brightness of the environment is obtained, then the current backlight brightness adjusting speed is determined according to the current backlight brightness of the display screen, then the adjusting speed corresponding to the next backlight brightness adjustment is determined according to the backlight brightness of the display screen after the current backlight brightness adjustment, namely, each adjusting speed is determined by the backlight result adjusted immediately before, and the faster the backlight brightness is adjusted, the slower the backlight brightness is adjusted, so that the adjusting speed is matched with the backlight brightness during the adjustment, thereby avoiding the burden of the prior art caused by the jump of brightness generated when different backlight brightness is adjusted at the same speed, improving the visual experience of a user, and adjusting for multiple times until the backlight brightness of the display screen is adjusted to the target backlight brightness value, the method avoids the change of the backlight brightness of the display screen due to the change of the brightness of the environment, so that human eyes can generate a sense of light jumping, the burden of the human eyes is reduced, and the visual experience of a user is improved.
Furthermore, the higher the backlight brightness is, the higher the adjustment speed is, so that the phenomenon that the brightness of human eyes jumps due to the change of the ambient brightness of the backlight is avoided, the burden on the human eyes is reduced, and meanwhile, the backlight adjustment speed is also improved, so that the user experience is further improved.
Based on the same inventive concept, embodiments of the present invention provide a display screen device, and for specific implementation of a backlight brightness adjustment method for a display screen of the display screen device, reference may be made to the description of the above method embodiment, and repeated descriptions are omitted, where the display screen includes:
the acquisition module is used for acquiring target backlight brightness matched with the current brightness of the environment when the brightness of the environment where the display screen is located is determined to change;
and the backlight brightness adjusting module is used for adjusting the backlight brightness of the display screen for multiple times until the backlight brightness of the display screen is adjusted to the target backlight brightness, wherein the speed of each adjustment is determined by the last backlight brightness adjustment result immediately before the adjustment.
Optionally, the lower the backlight brightness of the display screen is, the slower the adjustment speed is, and the higher the backlight brightness of the display screen is, the faster the adjustment speed is.
Optionally, the backlight brightness adjusting module is further configured to:
for any one of the plurality of adjustments, obtaining a display screen backlight brightness after a last adjustment immediately before the any one adjustment;
acquiring the backlight brightness adjusting speed change rate of the display screen;
determining the adjusting speed of any one time of adjustment according to the change rate and the backlight brightness of the display screen;
and adjusting the backlight brightness of the display screen according to the determined adjusting speed.
Optionally, the backlight brightness adjusting module is further configured to:
obtaining the adjustment step of any adjustment according to the determined adjustment speed, wherein the adjustment step refers to the backlight brightness value of each adjustment;
and adjusting the backlight brightness of the display screen according to the adjusting step.
Optionally, the backlight brightness adjusting module is further configured to:
acquiring the maximum value and the minimum value of the backlight brightness adjusting speed of the display screen, and acquiring the maximum value and the minimum value of the backlight brightness of the display screen;
and obtaining the change rate of the backlight brightness adjusting speed according to the maximum value and the minimum value of the adjusting speed and the maximum value and the minimum value of the backlight brightness.
Optionally, the backlight brightness adjusting module is further configured to:
by calculating: determining the adjustment speed of any one of the adjustments by Ramp _ rate _ k (bright-minBri) + minRate;
wherein, Ramp _ rate is the backlight Brightness adjusting speed, Ramp _ k is the backlight Brightness adjusting speed change rate, Brightness is the current backlight Brightness of the display screen, minBri is the minimum backlight Brightness adjustable by the display screen, and minRate is the minimum adjusting speed of the backlight Brightness of the display screen.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (4)
1. A backlight brightness adjusting method of a display screen is characterized by comprising the following steps:
when the brightness of the environment where the display screen is located is determined to be changed, obtaining target backlight brightness matched with the current brightness of the environment;
adjusting the backlight brightness of the display screen for multiple times until the backlight brightness of the display screen is adjusted to the target backlight brightness, wherein the speed of each adjustment in the multiple times of adjustment is different;
for any one of the plurality of adjustments, obtaining a display screen backlight brightness after a last adjustment immediately before the any one adjustment;
acquiring the maximum value and the minimum value of the backlight brightness adjusting speed of the display screen, and acquiring the maximum value and the minimum value of the backlight brightness of the display screen;
obtaining the change rate of the backlight brightness adjusting speed according to the difference between the maximum value and the minimum value of the adjusting speed and the ratio of the difference between the maximum value and the minimum value of the backlight brightness; by calculating: determining the adjustment speed of any one of the adjustments by Ramp _ rate _ k (bright-minBri) + minRate; wherein, Ramp _ rate is the backlight Brightness adjusting speed, Ramp _ k is the backlight Brightness adjusting speed change rate, Brightness is the current backlight Brightness of the display screen, minBri is the minimum backlight Brightness adjustable by the display screen, and minRate is the minimum adjusting speed of the backlight Brightness of the display screen;
and adjusting the backlight brightness of the display screen according to the determined adjusting speed.
2. The method of claim 1, wherein adjusting the backlight brightness of the display screen based on the determined adjustment speed comprises:
obtaining the adjustment step of any adjustment according to the determined adjustment speed, wherein the adjustment step refers to the backlight brightness value of each adjustment;
and adjusting the backlight brightness of the display screen according to the adjusting step.
3. A display screen device, comprising:
the acquisition module is used for acquiring target backlight brightness matched with the current brightness of the environment when the brightness of the environment where the display screen is located is determined to change;
the backlight brightness adjusting module is used for adjusting the backlight brightness of the display screen for multiple times until the backlight brightness of the display screen is adjusted to the target backlight brightness, wherein the speed of each adjustment in the multiple times of adjustment is different;
the backlight brightness adjusting module is further configured to:
for any one of the plurality of adjustments, obtaining a display screen backlight brightness after a last adjustment immediately before the any one adjustment;
acquiring the maximum value and the minimum value of the backlight brightness adjusting speed of the display screen, and acquiring the maximum value and the minimum value of the backlight brightness of the display screen;
obtaining the change rate of the backlight brightness adjusting speed according to the difference between the maximum value and the minimum value of the adjusting speed and the ratio of the difference between the maximum value and the minimum value of the backlight brightness;
by calculating: determining the adjustment speed of any one of the adjustments by Ramp _ rate _ k (bright-minBri) + minRate; wherein, Ramp _ rate is the backlight Brightness adjusting speed, Ramp _ k is the backlight Brightness adjusting speed change rate, Brightness is the current backlight Brightness of the display screen, minBri is the minimum backlight Brightness adjustable by the display screen, and minRate is the minimum adjusting speed of the backlight Brightness of the display screen;
and adjusting the backlight brightness of the display screen according to the determined adjusting speed.
4. The display screen device of claim 3, wherein the backlight brightness adjustment module is further configured to:
obtaining the adjustment step of any adjustment according to the determined adjustment speed, wherein the adjustment step refers to the backlight brightness value of each adjustment;
and adjusting the backlight brightness of the display screen according to the adjusting step.
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| CN110033738A (en) * | 2019-04-11 | 2019-07-19 | 重庆长安汽车股份有限公司 | Automobile shows the background light level adjusting method of class product |
| CN111261129A (en) * | 2020-03-23 | 2020-06-09 | 北京奇艺世纪科技有限公司 | Screen brightness control method and device, electronic equipment and storage medium |
| CN114187874B (en) * | 2020-09-15 | 2023-07-18 | 北京小米移动软件有限公司 | Brightness adjusting method, device and storage medium |
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