CN106710536A - Method and device for adjusting luminance of display screen as well as terminal - Google Patents
Method and device for adjusting luminance of display screen as well as terminal Download PDFInfo
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- CN106710536A CN106710536A CN201710142694.6A CN201710142694A CN106710536A CN 106710536 A CN106710536 A CN 106710536A CN 201710142694 A CN201710142694 A CN 201710142694A CN 106710536 A CN106710536 A CN 106710536A
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- display screen
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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
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
- G09G3/3413—Details of control of colour illumination sources
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Controls And Circuits For Display Device (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a method and a device for adjusting luminance of a display screen as well as a terminal. The method comprises the following steps: acquiring a present luminance setting value of the display screen; judging if the present luminance setting value is the maximal luminance value; if the present luminance setting value is the maximal luminance value, closing a CABC function. According to the invention, when the present luminance setting value is the maximal luminance value, the display luminance of the display screen is promoted and the definition of the display frame is promoted.
Description
Technical field
The present embodiments relate to display screen technology, more particularly to a kind of method for adjusting brightness of display screen, device and end
End.
Background technology
LCD (Liquid Crystal Display, LCDs) passes through backlight drive IC (Integrated
Circuit, integrated circuit) control display screen display brightness, control display brightness when, mainly by backlight drive signal
LED (Light Emitting Diode, light emitting diode) backlight luminous time and brightness is controlled to realize.
In the prior art, in order to save the power consumption of terminal, display screen IC can reduce the display brightness of display screen, cause user
The display content of display screen is not seen when in strong light environment.
The content of the invention
The embodiment of the present invention provides a kind of method for adjusting display screen display brightness, device and terminal, can improve display
The display brightness of screen, improves the definition of display picture.
In a first aspect, the embodiment of the invention provides a kind of method for adjusting display screen display brightness, methods described includes：
Obtain the present intensity arranges value of display screen；
Judge whether the present intensity arranges value is maximum brightness value；
If the present intensity arranges value is maximum brightness value, CABC (Content Adaptive are closed
Brightness Control, content-adaptive backlight control) function.
Second aspect, the embodiment of the present invention additionally provides a kind of device for adjusting display screen display brightness, described device bag
Include：
Brightness set value acquisition module, the present intensity arranges value for obtaining display screen；
Judge module, for judging whether the present intensity arranges value is maximum brightness value；
CABC closedown modules, if being maximum brightness value for the present intensity arranges value, close CABC functions.
The third aspect, the embodiment of the invention provides a kind of terminal, including memory, processor and storage are on a memory
And the computer program that can be run on a processor, realize following steps during computer program described in the computing device：
Obtain the present intensity arranges value of display screen；
Judge whether the present intensity arranges value is maximum brightness value；
If the present intensity arranges value is maximum brightness value, CABC functions are closed.
The technical scheme of the present embodiment, by obtaining the present intensity arranges value of display screen, be in present intensity arranges value
During maximum brightness value, CABC functions are closed, improve the display brightness of display screen, and improve the definition of display picture.
Brief description of the drawings
Fig. 1 is a kind of flow chart of method for adjusting brightness of display screen provided in an embodiment of the present invention；
Fig. 2 a are that the display of original Contrast in the method for adjustment brightness of display screen provided in an embodiment of the present invention when spending is shown
Illustration；
Fig. 2 b are that the display after the raising contrast in the method for adjustment brightness of display screen provided in an embodiment of the present invention is shown
Illustration；
Fig. 3 is a kind of flow chart of the method for adjustment brightness of display screen that one embodiment of the invention is provided；
Fig. 4 is a kind of flow chart of the method for adjustment brightness of display screen that one embodiment of the invention is provided；
Fig. 5 is a kind of structural representation of device for adjusting brightness of display screen provided in an embodiment of the present invention；
Fig. 6 is a kind of structural representation of terminal provided in an embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that, in order to just
Part rather than full content related to the present invention is illustrate only in description, accompanying drawing.
It should be mentioned that some exemplary embodiments are described as before exemplary embodiment is discussed in greater detail
The treatment described as flow chart or method.Although each step to be described as flow chart the treatment of order, many of which
Step can be implemented concurrently, concomitantly or simultaneously.Additionally, the order of each step can be rearranged.When its operation
The treatment can be terminated during completion, it is also possible to have the additional step being not included in accompanying drawing.The treatment can be with
Corresponding to method, function, code, subroutine, subprogram etc..
Fig. 1 is a kind of flow chart of method for adjusting brightness of display screen provided in an embodiment of the present invention, and the present embodiment can be fitted
The situation of brightness of display screen is adjusted during for being maximum brightness value according to present intensity arranges value, the method can be shown by adjustment
Shield the device of brightness to perform, the device can be realized that the method comprises the following steps by software and/or hardware：
Step 110, obtains the present intensity arranges value of display screen.
Wherein, brightness set value is the setting brightness of display screen, is brightness and the fluorescent lifetime of the LED backlight for setting.
User can adjust the brightness set value of display screen by the slider bar of adjusting display brightness, and then adjust the display of display screen
Brightness.Brightness set value can also be set by backlight regulation is automatic, can set corresponding bright according to the power of current environment light
Degree arranges value.
The currently displaying brightness of the present intensity arranges value not necessarily display screen of display screen, because some electricity-saving functions
The display brightness of display screen can be reduced so that the display brightness of display screen is inconsistent with brightness set value.
Step 120, judges whether the present intensity arranges value is maximum brightness value.
Judge whether the present intensity arranges value is maximum brightness value, i.e., whether be brightness set value maximum.
Step 130, if the present intensity arranges value is maximum brightness value, closes CABC functions.
Wherein, CABC technologies are display backlight power conservation techniques, are mainly reduced by being identified to display content
Backlight illumination, identification is analyzed to display content by increasing a content analyser circuit in backlight drive IC, is counted
Automatically display picture gray-scale intensity is improved with algorithm according to setting after calculating and counting the data of display picture, then backlight is bright
Degree is reduced, and then reaches the purpose of power saving.The display brightness is necessarily caused to reduce backlight illumination reduction.
If the present intensity arranges value is maximum brightness value, show that terminal is currently in strong light environment, in order to
So that user sees the display content of display screen clearly, at this moment without considering the power consumption of display screen, and can pass through to close CABC functions,
To improve the display brightness of display screen.If the present intensity arranges value is not maximum brightness value, show that terminal does not have currently
Have in strong light environment, the display brightness of display screen need not be again improved on the basis of currently displaying brightness, can keep
The opening of CABC functions saves the power consumption of display screen, and then saves the power consumption of terminal.
Optionally, closing CABC functions includes：
Whether the PWM duty cycle for judging control display screen backlight is 100%；
If it is not, then closing CABC functions and the PWM duty cycle being adjusted into 100%.
Wherein, PWM (Pulse Width Modulation, pulse width modulation), by a series of width to pulses
It is modulated, equally to obtain required waveform.For the regulation of display backlight, usually controlled using PWM light modulations
The fluorescent lifetime of LED backlight reaches the display brightness of control display screen.
In the terminal with CABC functions, can be reduced by reducing PWM duty cycle the fluorescent lifetime of LED backlight come
The display brightness of display screen is reduced, the purpose for saving power consumption is reached.
When present intensity arranges value is maximum brightness value, show that terminal is currently in strong light environment, it is desirable to show bright
Degree can reach maximum, and whether the PWM duty cycle at this moment judging control display screen backlight is 100%, if not 100%, then
Illustrate that CABC functions reduce PWM duty cycle, at this moment close CABC functions, and the PWM duty cycle is adjusted to 100%, protect
The output of card backlight drive IC is maximum, improves the display brightness of display screen.If the PWM duty cycle of control display screen backlight is
It is 100%, then cannot improving display brightness, keeps current PWM duty cycle.
Wherein, close CABC functions after, it is also optional including：
The output contrast of the display screen is improved into preset value.
Wherein, contrast be when same point is most bright on screen (white) with it is most dark when (black) brightness ratio, it is high
Contrast means of a relatively high brightness and the gorgeous degree of color is presented.
Fig. 2 a are that the display of original Contrast in the method for adjustment brightness of display screen provided in an embodiment of the present invention when spending is shown
Illustration, Fig. 2 b are the display examples after the raising contrast in the method for adjustment brightness of display screen provided in an embodiment of the present invention
Figure.As shown in Figure 2 a and 2 b, the output contrast of display screen is improved into preset value, can causes that display picture is in sharp contrast,
Further improve the definition of display picture.
The technical scheme of the present embodiment, by obtaining the present intensity arranges value of display screen, be in present intensity arranges value
During maximum brightness value, CABC functions are closed, improve the display brightness of display screen, and improve the definition of display picture.
Fig. 3 is a kind of flow chart of the method for adjustment brightness of display screen that one embodiment of the invention is provided, such as Fig. 3 institutes
Show, the method comprises the following steps：
Step 310, obtains current environment luminous intensity；
Current environment luminous intensity can be obtained by ambient light sensor.Wherein, around ambient light sensor can be perceived
Light conditions, and notify that backlight drive IC automatically adjusts display backlight brightness, reduce the power consumption of product.
Step 320, according to the current environment luminous intensity, adjusts the present intensity arranges value of display screen.
The corresponding relation of current environment luminous intensity and present intensity arranges value can be prestored, by ambient light sensor
After obtaining current environment luminous intensity, the present intensity according to current environment luminous intensity and corresponding relation regulation display screen sets
Put value.
Wherein, according to the current environment luminous intensity, adjust display screen present intensity arranges value it is optional including：
When the current environment luminous intensity is more than default Intensity threshold, the present intensity arranges value of the display screen is adjusted
It is maximum brightness value to save.
Wherein, default Intensity threshold is the threshold value of maximum in the corresponding relation, and current environment luminous intensity is default more than this
During Intensity threshold, correspond to for the present intensity arranges value of display screen to be adjusted to maximum brightness value, so as to improve the clear of display screen
Clear degree so that user can see the display picture of display screen clearly.
Step 330, obtains the present intensity arranges value of display screen.
Step 340, judges whether the present intensity arranges value is maximum brightness value.
Judge whether the present intensity arranges value is maximum brightness value, i.e., whether be brightness set value maximum.
Step 350, if the present intensity arranges value is maximum brightness value, closes CABC functions.
The technical scheme of the present embodiment, by according to ambient light intensity, adjusting the present intensity arranges value of display screen, and
When present intensity arranges value is maximum brightness value, CABC functions are closed so that display brightness matches with ambient brightness, and strong
In luminous environment, the display brightness of display screen is further increased, improve the definition of display picture.
Fig. 4 is a kind of flow chart of the method for adjustment brightness of display screen that one embodiment of the invention is provided, such as Fig. 4 institutes
Show, the method comprises the following steps：
Step 410, obtains the present intensity arranges value of display screen；
Step 420, judges whether the present intensity arranges value is maximum brightness value, if it is performs step 430, such as
Fruit is otherwise terminated；
Step 430, whether the PWM duty cycle for judging control display screen backlight is 100%, is if it is terminated, if not
Then perform step 440；
Step 440, closes CABC functions and the PWM duty cycle is adjusted into 100%.
The technical scheme of the present embodiment, by when present intensity arranges value is maximum brightness value, closing CABC functions simultaneously
The PWM duty cycle is adjusted to 100%, it is ensured that the output of backlight drive IC is maximum, improves the display brightness of display screen,
And improve the definition of display picture.
Fig. 5 is a kind of structural representation of device for adjusting brightness of display screen provided in an embodiment of the present invention, such as Fig. 5 institutes
Show, the device of the adjustment brightness of display screen described in the present embodiment includes：Brightness set value acquisition module 510, the and of judge module 520
CABC closedown modules 530.
Wherein, brightness set value acquisition module 510, the present intensity arranges value for obtaining display screen；
Judge module 520, for judging whether the present intensity arranges value is maximum brightness value；
CABC closedown modules 530, if being maximum brightness value for the present intensity arranges value, close CABC work(
Energy.
Optionally, the CABC closedown modules include：
Judging unit, whether the PWM duty cycle for judging control display screen backlight is 100%；
CABC closing units, if not being 100% for the PWM duty cycle, close CABC functions and by the PWM
Dutycycle is adjusted to 100%.
Optionally, also include：
Contrast improves module, for after closing CABC functions, the output contrast of the display screen being improved into pre-
If value.
Optionally, also include：
Ambient light intensity acquisition module, for before the present intensity arranges value of display screen is obtained, obtaining current environment
Luminous intensity；
Brightness set value adjustment module, for according to the current environment luminous intensity, the present intensity for adjusting display screen to set
Put value.
Optionally, the brightness set value adjustment module specifically for：
When the current environment luminous intensity is more than default Intensity threshold, the present intensity arranges value of the display screen is adjusted
It is maximum brightness value to save.
The device of above-mentioned adjustment brightness of display screen can perform the adjustment brightness of display screen that any embodiment of the present invention is provided
Method, possess the corresponding functional module of execution method and beneficial effect.Not ins and outs of detailed description in the present embodiment,
Reference can be made to the method for the adjustment brightness of display screen that any embodiment of the present invention is provided.
The embodiment of the present invention additionally provides a kind of terminal, including memory, processor and storage are on a memory and can be
The computer program run on processor, it is characterised in that realize following step described in the computing device during computer program
Suddenly：
Obtain the present intensity arranges value of display screen；
Judge whether the present intensity arranges value is maximum brightness value；
If the present intensity arranges value is maximum brightness value, CABC functions are closed.
The terminal can include the device of the adjustment brightness of display screen that any embodiment of the present invention is provided.Fig. 6 is the present invention
The structural representation of a kind of terminal that embodiment is provided, as shown in fig. 6, the terminal can include：Memory 601, center treatment
Device (Central Processing Unit, hereinafter referred to as CPU) 602, (Radio Frequency, penetrate Peripheral Interface 603, RF
Frequently circuit 605, voicefrequency circuit 606, loudspeaker 611, power management chip 608, input/output (I/O) subsystem 609, touch)
Screen 612, other input/control devicess 610 and outside port 604, these parts pass through one or more communication bus or letter
Number line 607 communicates.
It should be understood that graphic terminal 600 is only an example of terminal, and terminal 600 can have than figure
Shown in more or less parts, two or more parts can be combined, or can have different portions
Part is configured.Various parts shown in figure can be including including one or more signal transactings and/or application specific integrated circuit
Hardware, software or hardware and software combination in realize.
It is described in detail for adjusting the terminal of brightness of display screen with regard to what the present embodiment was provided below, the terminal is with hand
As a example by machine.
Memory 601, the memory 601 can be accessed by CPU602, Peripheral Interface 603 etc., and the memory 601 can
With including high-speed random access memory, nonvolatile memory can also be included, such as one or more disk memories,
Flush memory device or other volatile solid-state parts.
The input of equipment and output peripheral hardware can be connected to CPU602 and deposited by Peripheral Interface 603, the Peripheral Interface 603
Reservoir 601.
I/O subsystems 609, the I/O subsystems 609 can be by the input/output peripheral in equipment, such as touch-screen 612
(equivalent to the display screen in above-described embodiment) and other input/control devicess 610, are connected to Peripheral Interface 603.I/O subsystems
System 609 can include display controller 6091 and one or more the input controls for controlling other input/control devicess 610
Device 6092.Wherein, one or more input controllers 6092 from other input/control devicess 610 receive electric signal or to its
His input/control devices 610 sends electric signal, and other input/control devicess 610 can include that physical button (presses button, shakes
Arm button etc.), dial, slide switch, control stick, click on roller.What deserves to be explained is, input controller 6092 can with
Lower any one connection：The instruction equipment of keyboard, infrared port, USB interface and such as mouse.
Touch-screen 612, the touch-screen 612 is the input interface and output interface between terminal and user, will be visual defeated
Go out to be shown to user, visual output can be including figure, text, icon, video etc..
Display controller 6091 in I/O subsystems 609 receives electric signal or is sent out to touch-screen 612 from touch-screen 612
Electric signals.Contact on the detection touch-screen of touch-screen 612, the contact that display controller 6091 will be detected is converted to and display
The interaction of the user interface object on touch-screen 612, that is, realize man-machine interaction, is displayed in the user interface on touch-screen 612
Object can be the icon of running game, the icon etc. that is networked to corresponding network.What deserves to be explained is, equipment can also include light
Mouse, light mouse is the extension for not showing the visual touch sensitive surface for exporting, or the touch sensitive surface formed by touch-screen.
RF circuits 605, are mainly used in setting up the communication of mobile phone and wireless network (i.e. network side), realize mobile phone and wireless network
The data receiver of network and transmission.Such as transmitting-receiving short message, Email etc..Specifically, RF circuits 605 are received and send RF letters
Number, RF signals are also referred to as electromagnetic signal, and RF circuits 605 convert electrical signals to electromagnetic signal or electromagnetic signal is converted into telecommunications
Number, and communicated with communication network and other equipment by the electromagnetic signal.RF circuits 605 can be included for performing
The known circuit of these functions, it includes but is not limited to antenna system, RF transceivers, one or more amplifiers, tuner, one
Individual or multiple oscillators, digital signal processor, CODEC (COder-DECoder, coder) chipset, ID mould
Block (Subscriber Identity Module, SIM) etc..
Voicefrequency circuit 606, is mainly used in receiving voice data from Peripheral Interface 603, and the voice data is converted into telecommunications
Number, and the electric signal is sent to loudspeaker 611.
Loudspeaker 611, for the voice signal for receiving mobile phone from wireless network by RF circuits 605, is reduced to sound
And play the sound to user.
Power management chip 608, for being powered by the hardware that CPU602, I/O subsystem and Peripheral Interface are connected
And power management.
CPU602 provided in an embodiment of the present invention can be by obtaining the present intensity arranges value of display screen, in present intensity
When arranges value is maximum brightness value, CABC functions are closed, improve the display brightness of display screen, and improve the clear of display picture
Clear degree.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although the present invention is carried out by above example
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
More other Equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (11)
1. it is a kind of adjust brightness of display screen method, it is characterised in that methods described includes：
Obtain the present intensity arranges value of display screen；
Judge whether the present intensity arranges value is maximum brightness value；
If the present intensity arranges value is maximum brightness value, content-adaptive backlight control CABC functions are closed.
2. method according to claim 1, it is characterised in that closing CABC functions includes：
Whether the pulse width modulation (PWM) dutycycle for judging control display screen backlight is 100%；
If it is not, then closing CABC functions and the PWM duty cycle being adjusted into 100%.
3. method according to claim 1, it is characterised in that after CABC functions are closed, also include：
The output contrast of the display screen is improved into preset value.
4. according to any described methods of claim 1-3, it is characterised in that obtain display screen present intensity arranges value it
Before, also include：
Obtain current environment luminous intensity；
According to the current environment luminous intensity, the present intensity arranges value of display screen is adjusted.
5. method according to claim 4, it is characterised in that according to the current environment luminous intensity, regulation display screen
Present intensity arranges value includes：
When the current environment luminous intensity is more than default Intensity threshold, the present intensity arranges value of the display screen is adjusted to
Maximum brightness value.
6. it is a kind of adjust brightness of display screen device, it is characterised in that described device includes：
Brightness set value acquisition module, the present intensity arranges value for obtaining display screen；
Judge module, for judging whether the present intensity arranges value is maximum brightness value；
CABC closedown modules, if being maximum brightness value for the present intensity arranges value, close CABC functions.
7. device according to claim 6, it is characterised in that the CABC closedown modules include：
Judging unit, whether the PWM duty cycle for judging control display screen backlight is 100%；
CABC closing units, if not being 100% for the PWM duty cycle, close CABC functions and by the PWM duties
Than being adjusted to 100%.
8. device according to claim 6, it is characterised in that also include：
Contrast improves module, for after closing CABC functions, the output contrast of the display screen being improved into preset value.
9. according to any described devices of claim 6-8, it is characterised in that also include：
Ambient light intensity acquisition module, for before the present intensity arranges value of display screen is obtained, obtaining current environment light intensity
Degree；
Brightness set value adjustment module, for according to the current environment luminous intensity, adjusting the present intensity arranges value of display screen.
10. device according to claim 9, it is characterised in that the brightness set value adjustment module specifically for：
When the current environment luminous intensity is more than default Intensity threshold, the present intensity arranges value of the display screen is adjusted to
Maximum brightness value.
A kind of 11. terminals, including memory, processor and storage are on a memory and the computer journey that can run on a processor
Sequence, it is characterised in that realize following steps during computer program described in the computing device：
Obtain the present intensity arranges value of display screen；
Judge whether the present intensity arranges value is maximum brightness value；
If the present intensity arranges value is maximum brightness value, CABC functions are closed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710142694.6A CN106710536A (en) | 2017-03-10 | 2017-03-10 | Method and device for adjusting luminance of display screen as well as terminal |
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|---|---|---|---|
| CN201710142694.6A CN106710536A (en) | 2017-03-10 | 2017-03-10 | Method and device for adjusting luminance of display screen as well as terminal |
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| CN108124305A (en) * | 2017-12-29 | 2018-06-05 | 宁波大学 | A kind of self-adapting regulation method of mobile terminal power consumption |
| CN109272917A (en) * | 2018-10-25 | 2019-01-25 | Oppo广东移动通信有限公司 | Screen luminance adjustment method, device, storage medium and electronic equipment |
| TWI664613B (en) * | 2017-06-30 | 2019-07-01 | 昆山國顯光電有限公司 | Display screen dimming method, device, storage medium and electronic equipment |
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Application publication date: 20170524 |