CN105869603A - Screen brightness regulation method and device - Google Patents
Screen brightness regulation method and device Download PDFInfo
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- CN105869603A CN105869603A CN201510613728.6A CN201510613728A CN105869603A CN 105869603 A CN105869603 A CN 105869603A CN 201510613728 A CN201510613728 A CN 201510613728A CN 105869603 A CN105869603 A CN 105869603A
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Abstract
The present invention discloses a screen brightness regulation method and device. The method comprises: determining the current brightness of the environment where the terminal is located; determining the object screen brightness according to the current brightness and the change trend of the environment brightness, wherein the change trend of the environment brightness is determined according to the current brightness; and regulating the screen brightness of the terminal according to the object screen brightness. The screen brightness regulation method and device provided by the embodiment of the invention are configured to consider the brightness of the current environment and combine the change trend of the environment brightness when the screen brightness is regulated so as to realize that the regulation of the screen brightness may be applicable to the change trend of the light at the surrounding environment.
Description
Technical field
The present embodiments relate to electronic technology field, particularly relate to control method and the dress of a kind of screen intensity
Put.
Background technology
Universal along with the mobile terminal such as mobile phone, panel computer, these mobile terminals become people's life,
Working and entertain requisite instrument, people are increasingly stronger to the dependency of mobile phone or panel computer, every day
More and more longer facing to the time of mobile phone or panel computer, therefore, in order to protect the eyes of user and meet
The demand of user, the brightness being automatically adjusted screen is particularly important.
At present, the mobile terminal such as most of mobile phones or panel computer all has the function being automatically adjusted screen intensity,
After enabling the function being automatically adjusted screen intensity, system can be according to the brightness of surrounding to screen
Curtain brightness automatically adjusts, it is not necessary to user regulates screen intensity the most voluntarily, so that the tune of screen intensity
Save more automatization, intellectuality.But screen luminance adjustment method of the prior art has the disadvantage that
In the case of surrounding environment light pace of change is slow, screen intensity is flickering, easy impaired user eyes；
Around in the case of ambient light sudden change, such as go to the outdoor of sunlight direct projection from indoor, or from having
The outdoor entrance of sunlight direct projection is indoor, and screen intensity delays to reach required brightness, it is impossible to allow user exist
The very first time sees screen clearly, reduces the experience satisfaction of user.
Summary of the invention
The embodiment of the present invention provides control method and the device of a kind of screen intensity, to realize screen intensity
Regulation can adapt to the situation of change in surrounding environment light.
First aspect, embodiments provides the control method of a kind of screen intensity, including:
The current brightness of detection terminal local environment；
According to described current brightness and the variation tendency of environmental light brightness, determine target screen intensity, its
In, the variation tendency of described environmental light brightness determines according to described current brightness；
According to described target screen intensity, the screen intensity of described terminal is adjusted.
Further, according to described current brightness and the variation tendency of environmental light brightness, target screen is determined
Curtain brightness includes:
According to described current brightness, based on predetermined luminance corresponding relation, determine and estimate screen intensity；
The amplitude of variation of screen intensity and current screen brightness is estimated, as described environmental light brightness described in calculating
Variation tendency；
According to described amplitude of variation with described estimate screen intensity, calculate described target screen intensity.
Further, according to described amplitude of variation with described estimate screen intensity, calculate described target screen bright
Degree includes:
According to described amplitude of variation with described estimate screen intensity, determine mesh based on following screen intensity adjustment function
Mark screen intensity:
Wherein, S is target screen intensity, S1For current screen brightness, S2For estimating screen intensity, SThrd1For
First predetermined threshold value, SThrd2Being the second predetermined threshold value, Δ T is brightness regulation speed parameter.
Further, according to described amplitude of variation with described estimate screen intensity, regulate letter based on screen intensity
Before number determines target screen intensity, also include:
Brightness regulation speed parameter is determined according to described amplitude of variation.
Further, according to described current brightness, based on predetermined luminance corresponding relation, determine and estimate screen
Brightness includes:
According to described current brightness, function based on following predetermined luminance corresponding relation, determine and estimate screen
Brightness:
F (X)=α X+Smin,
Wherein, f (X) is for estimating screen intensity, and X is current brightness, α=(Smax-Smin)/Lmax, SminFor
The default minimum brightness of screen, SmaxFor the preset maximum brightness of screen, LmaxFor screen adjustment to SmaxTime corresponding
Photosensitive value.
Further, the current brightness of detection terminal local environment includes:
In preset duration, the brightness of terminal local environment is gathered at least twice, and calculates collection
The meansigma methods of brightness, as described current brightness.
Second aspect, the embodiment of the present invention additionally provides the adjusting means of a kind of screen intensity, including:
Brightness detector unit, for detecting the current brightness of terminal local environment；
Screen intensity determines unit, is used for according to described current brightness and the variation tendency of environmental light brightness,
Determining target screen intensity, wherein, the variation tendency of described environmental light brightness is true according to described current brightness
Fixed；
Screen intensity regulation unit, for entering the screen intensity of described terminal according to described target screen intensity
Row regulation.
Further, described screen intensity determines that unit includes:
Estimate screen intensity and determine subelement, for according to described current brightness, corresponding based on predetermined luminance
Relation, determines and estimates screen intensity；
Screen intensity amplitude of variation computation subunit, be used for calculating described in estimate screen intensity bright with current screen
The amplitude of variation of degree, as the variation tendency of described environmental light brightness；
Target screen brightness calculation subelement, for according to described amplitude of variation with described estimate screen intensity,
Calculate described target screen intensity.
Further, described target screen brightness calculation subelement specifically for:
According to described amplitude of variation with described estimate screen intensity, determine mesh based on following screen intensity adjustment function
Mark screen intensity:
Wherein, S is target screen intensity, S1For current screen brightness, S2For estimating screen intensity, SThrd1For
First predetermined threshold value, SThrd2Being the second predetermined threshold value, Δ T is brightness regulation speed parameter.
Further, also include:
Brightness regulation speed parameter determines subelement, for determining brightness regulation speed according to described amplitude of variation
Parameter.
Further, estimate described in screen intensity determine subelement specifically for:
According to described current brightness, function based on following predetermined luminance corresponding relation, determine and estimate screen
Brightness:
F (X)=α X+Smin,
Wherein, f (X) is for estimating screen intensity, and X is current brightness, α=(Smax-Smin)/Lmax, SminFor
The default minimum brightness of screen, SmaxFor the preset maximum brightness of screen, LmaxFor screen adjustment to SmaxTime corresponding
Photosensitive value.
Further, described brightness detector unit specifically for:
In preset duration, the brightness of terminal local environment is gathered at least twice, and calculates collection
The meansigma methods of brightness, as described current brightness.
The control method of the screen intensity that the embodiment of the present invention provides and device, when regulating screen intensity, no
Only consider the current brightness of local environment, herein in connection with the variation tendency considering environmental light brightness, it is achieved that
Regulation to screen intensity can adapt to the situation of change in surrounding environment light, to meet user to screen intensity
The demand of regulation.
Accompanying drawing explanation
Fig. 1 is the flow chart of the control method of the screen intensity in the embodiment of the present invention one；
Fig. 2 is the flow chart of the control method of the screen intensity in the embodiment of the present invention two；
Fig. 3 is the environmental light brightness in the embodiment of the present invention two/estimate screen intensity and the showing of the relation of time
It is intended to；
Fig. 4 is the schematic diagram of the predetermined luminance corresponding relation in the embodiment of the present invention two；
Fig. 5 is the structural representation of the adjusting means of the screen intensity in the embodiment of the present invention three.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the present invention
Accompanying drawing in embodiment, is clearly and completely described the technical scheme in the embodiment of the present invention, it is clear that
Described embodiment is a part of embodiment of the present invention rather than whole embodiments.Based in the present invention
Embodiment, those of ordinary skill in the art obtained under not making creative work premise all its
His embodiment, broadly falls into the scope of protection of the invention.
Embodiment one
The flow chart of the control method of the screen intensity that Fig. 1 provides for the embodiment of the present invention one, the present embodiment
Method can be performed by the adjusting means of screen intensity, and this device can be real by the way of hardware and/or software
Existing, described device can be arranged on described terminal inner as a part for terminal.The screen that the present embodiment provides
The control method of brightness specifically includes following steps:
Step 110, the current brightness of detection terminal local environment.
Wherein, described terminal is including but not limited to mobile phone, panel computer, notebook, point of sale (Point
Of sales, POS) machine and vehicle-mounted computer.
Concrete, the optical sensor timing of terminal built-in can be used to detect the current brightness of terminal local environment.
Step 120, according to described current brightness and the variation tendency of environmental light brightness, determine target screen
Curtain brightness, wherein, the variation tendency of described environmental light brightness determines according to described current brightness.
The variation tendency of described environmental light brightness determines according to current brightness.On the one hand, environmental light brightness
Variation tendency can by the current brightness of environment and history brightness are detected, comparative analysis obtains
Take.Concrete, the variation tendency of environmental light brightness shows as current brightness relative to history environment brightness
Change.May be, but is not limited to, the amplitude of variation of brightness, the pace of change etc. of brightness.Such as,
The change of environmental light brightness can be used as according to the time length spent by environmental light brightness change setting amplitude to become
Gesture, and then determine target screen intensity to be adjusted.
On the other hand, the variation tendency of environmental light brightness can also be bright by the screen corresponding with environmental light brightness
The variation tendency of degree obtains.Such as, if current screen intensity is determined by the history brightness of environment,
Then can be estimated screen intensity by the current brightness of environment, then estimate screen intensity and current screen brightness it
Between variation tendency also be able to reflect the variation tendency of environmental light brightness.
Object brightness is determined, in environmental light brightness by the variation tendency of current brightness and environmental light brightness
In the case of sudden change, it is possible to achieve follow-up according to target screen intensity, the regulation of screen intensity be can adapt in
The situation of change of surrounding environment light.Such as, go to the outdoor of sunlight direct projection from indoor, or from there being the sun
The outdoor entrance of light direct beam is indoor, or in the case of environmental light brightness change slowly, can be according to difference
Situation take different modes to determine the target screen intensity of its correspondence respectively.
Step 130, according to described target screen intensity, the screen intensity of described terminal is adjusted.
Aforesaid operations, specifically by current screen brightness adjustment to target screen intensity.
The technical scheme of the present embodiment, when regulating screen intensity, not only considers the current light of local environment
Degree, herein in connection with the variation tendency considering environmental light brightness, it is achieved that the regulation to screen intensity can adapt to
In the situation of change of surrounding environment light, to meet the demand that screen intensity is regulated by user, improve user's
Experience satisfaction.
Embodiment two
Fig. 2 gives the flow chart of the control method of the screen intensity that the embodiment of the present invention two provides.This enforcement
Example is optimized based on embodiment one.In the present embodiment, will be according to described current brightness and ring
The variation tendency of border brightness, determines that target screen intensity is specifically as follows: according to described current brightness,
Based on predetermined luminance corresponding relation, determine and estimate screen intensity；Screen intensity and current screen is estimated described in calculating
The amplitude of variation of curtain brightness, as the variation tendency of described environmental light brightness；According to described amplitude of variation and institute
State and estimate screen intensity, calculate described target screen intensity.
Accordingly, as in figure 2 it is shown, the control method of the screen intensity of the present embodiment offer specifically includes following
Step:
Step 210, the current brightness of detection terminal local environment.
Concrete, this step may include that in preset duration, carries out the brightness of terminal local environment
Gather at least twice, and calculate the meansigma methods gathering brightness, as the current brightness of local environment.Example
As, terminal can gather 10～20 secondary environment brightness values each second, then corresponding in this second environment current
Brightness can be the meansigma methods of the environment bright angle value collected for 10～20 times.
Step 220, according to described current brightness, based on predetermined luminance corresponding relation, determine and estimate screen
Brightness.
Fig. 3 gives the pass of environmental light brightness/estimate screen intensity and time that the embodiment of the present invention two provides
The schematic diagram of system.As it is shown on figure 3, set moment t1Environment bright angle value be Lt1, corresponding according to predetermined luminance
What relation was available corresponding estimates screen brightness value St1, at subsequent time t2, environment bright angle value is Lt2,
According to predetermined luminance corresponding relation available corresponding estimate screen brightness value St2.Wherein, t1And t2Can be
The adjacent moment, such as at t1And t2Between screen all in the state of bright screen, it is also possible to when being non-conterminous
Carve, such as t1And t2Between screen be in screen lock state, the optical sensor of terminal does not works.At screen lock state
Under, terminal can record screen brightness value last during screen locking, and it can be bright as current screen during unlocking screen
Degree.So, no matter t1Moment and t2Between moment screen be in the state of bright screen be in screen lock state (
When being in screen lock state, user can be by being unlocked screen by the power key of terminal (Xie Pingjian)), logical
Cross the t according to storage1The screen intensity in moment, and according to t2It is pre-that the current shading computation in moment obtains
Estimate screen intensity, can be existing to solve rapidly by current screen brightness regulation to target screen intensity
Delay present in technology after mobile phone bright screen the problem by screen intensity regulation to appropriate brightness.
Fig. 4 gives the schematic diagram of the predetermined luminance corresponding relation that the embodiment of the present invention two provides, such as Fig. 4 institute
Showing, concrete, this step may include that according to described current brightness, corresponding based on following predetermined luminance
The function of relation, determines and estimates screen intensity:
F (X)=α X+Smin,
Wherein, f (X) is for estimating screen intensity, and X is current brightness, α=(Smax-Smin)/Lmax, SminFor
The default minimum brightness of screen, SmaxFor the preset maximum brightness of screen, LmaxFor screen adjustment to SmaxTime corresponding
Photosensitive value.
It should be noted that the brightness in external environment is more than LmaxTime, the value of screen intensity is Smax。
The relation estimating screen intensity and current brightness described in it addition, can also be for non-linear relation, it is possible to
With according to known part currently light with estimate screen intensity and simulate predetermined luminance corresponding relation.
The amplitude of variation of screen intensity and current screen brightness is estimated, as described described in step 230, calculating
The variation tendency of environmental light brightness.
Wherein, described amplitude of variation can be the difference estimating screen intensity with current screen brightness.
Step 240, according to described amplitude of variation with described estimate screen intensity, calculate described target screen bright
Degree.
Above-mentioned steps, when determining the target screen intensity being actually subjected to regulation, has taken that to estimate screen bright into consideration
Degree and amplitude of variation, can make the change of screen intensity more adapt to the variation tendency of ambient light.
Concrete, this step may include that according to described amplitude of variation and described estimates screen intensity, at next
Moment (after such as 1 second) determines target screen intensity based on following screen intensity adjustment function:
Wherein, S is target screen intensity, S1For current screen brightness, S2For estimating screen intensity, SThrd1For
First predetermined threshold value, SThrd2Being the second predetermined threshold value, Δ T is brightness regulation speed parameter.
According to described screen intensity adjustment function, it is to be understood that described brightness regulation speed parameter is the biggest,
Screen intensity governing speed is the slowest.
Above-mentioned Δ T can be the empirical value preset, it is also possible to be dynamic modulation, i.e. according to described change width
Degree estimates screen intensity with described, before determining target screen intensity based on screen intensity adjustment function, also wraps
Include: determine brightness regulation speed parameter according to described amplitude of variation.
Determine that brightness regulation speed parameter, the benefit so arranged are according to described amplitude of variation: at change width
When spending bigger, brightness regulation speed parameter can be set to a relatively small number, in amplitude of variation relatively
Hour, brightness regulation speed parameter is set to a relatively large number, with according to amplitude of variation properly
Time in complete the regulation of screen intensity, be unlikely to screen intensity governing speed the slowest, cause Consumer's Experience
The best, or screen intensity regulation is too fast, reduces the quality of screen-picture.
Wherein, | S2-S1|>SThrd1The feelings bigger with the amplitude of variation of current screen brightness for estimating screen intensity
Condition, such as, goes to the outdoor of sunlight direct projection from indoor, and environmental light brightness " is suddenlyd change " and caused screen bright
The situation that the degree amplitude of accommodation is bigger；|S2-S1|<SThrd2For estimating the change of screen intensity and current screen brightness
The situation that amplitude is less, such as, has the situation of faint change in indoor or outdoors environmental light brightness.Described SThrd1
For defining the threshold limit value whether environmental light brightness is " sudden change ", described SThrd2Send out for defining environmental light brightness
Raw faint change is so that current screen brightness is close to the threshold limit value estimating screen intensity, it is to be understood that
SThrd1And SThrd2Value can be set according to the real needs that screen intensity is regulated by user, such as,
If user thinks environmental light brightness amplitude of variation, bigger situation is " sudden change " situation, then can be by SThrd1If
It is set to a relatively large number, if user thinks that ambient brightness amplitude of variation is not that king-sized situation is for " prominent
Become " situation, then can be by SThrd1It is set to a more relatively small number.
Step 250, according to described target screen intensity, the screen intensity of described terminal is adjusted.
The concrete example of the control method of screen intensity that the present embodiment provide is given below, such as, described pre-
If the function of brightness corresponding relation is f (X)=X+20, wherein, the span of X is preferably 0～300.SThrd1
Value is 100, SThrd2Value is 3, and Δ T value is 5.
Example one: terminal is taken to outdoor from indoor, and indoor environmental light brightness L0 is 50, and terminal is in outdoor
Time environment current brightness L1 be 170, according to predetermined luminance corresponding relation, current screen brightness
S1=50+20=70, then, it is as follows that the control method of the screen intensity in example one implements process:
Current brightness L1 of detection terminal local environment is 170；According to described current brightness L1, based on
Predetermined luminance corresponding relation f (X)=X+20, determines and estimates screen intensity S2=170+20=190；Calculate
The described amplitude of variation estimating screen intensity and current screen brightness | S2-S1|=120, as described ambient light
The variation tendency of brightness；According to described amplitude of variation with described estimate screen intensity, based on above-mentioned screen intensity
Adjustment function, calculated described target screen intensity S for estimating screen intensity 190 in 1 second, and according to
The screen intensity of described terminal is regulated to target screen intensity 190 by described target screen intensity.
The control method of the screen intensity that the present embodiment provides, it is achieved that the situation of surrounding environment light jump in brightness
Under, screen intensity reached required appropriate brightness in 1 second, so that can quickly the regulating of screen intensity
To adapt to the change of surrounding environment light, meet rapidly the demand that screen intensity is regulated by user.
Example two: terminal is taken to place two from place one, and environmental light brightness L0 in place one is 50, terminal
When place two, current brightness L1 of environment is 120, according to predetermined luminance corresponding relation, currently shields
Curtain brightness S1=50+20=70, then, the control method of the screen intensity in example two implements process such as
Under:
Current brightness L1 of detection terminal local environment is 120；According to described current brightness L1, based on
Predetermined luminance corresponding relation f (X)=X+20, determines and estimates screen intensity S2=120+20=140；Calculate
The described amplitude of variation estimating screen intensity and current screen brightness | S2-S1|=70, as described environment bright
The variation tendency of degree；According to described amplitude of variation with described estimate screen intensity, adjust based on above-mentioned screen intensity
Joint function, calculates described target screen intensity；According to the described target screen intensity screen to described terminal
Brightness is adjusted.
Because, SThrd2≤|S2-S1|=70≤SThrd1, so, according to described amplitude of variation 70 and described pre-
Estimate screen intensity 140, based on above-mentioned screen intensity adjustment function, calculate target screen intensity, and according to
The screen intensity of described terminal is adjusted by described target screen intensity, until regulating screen intensity in advance
Estimate screen intensity S2。
Wherein, screen intensity regulation process is as shown in the table:
| Moment | S1 | S2 | S1Value after regulation | S1The amplitude of accommodation |
| T1 | 70 | 140 | 84 | 14 |
| T2 | 84 | 140 | 95 | 11 |
| T3 | 95 | 140 | 104 | 9 |
| T4 | 104 | 140 | 111 | 7 |
| T5 | 111 | 140 | 117 | 6 |
| T6 | 117 | 140 | 122 | 5 |
| T7 | 122 | 140 | 126 | 4 |
| T8 | 126 | 140 | 129 | 3 |
| T9 | 129 | 140 | 131 | 2 |
| T10 | 131 | 140 | 133 | 2 |
| T11 | 133 | 140 | 134 | 1 |
| T12 | 134 | 140 | 135 | 1 |
| T13 | 135 | 140 | 136 | 1 |
| T14 | 136 | 140 | 137 | 1 |
| T15 | 137 | 140 | 138 | 1 |
| T16 | 138 | 140 | 140 | 2 |
As shown above, calculating T1 moment target screen intensity according to screen intensity adjustment function is 70+
(140-70)/5=84, carries out Primary regulation to screen intensity, screen intensity is adjusted to 84；According to screen
It is 84+ (140-84)/5=95 that brightness regulation function calculates T2 moment target screen intensity, bright to screen
Degree carries out Primary regulation, and screen intensity is adjusted to 95；When calculating T3 according to screen intensity adjustment function
Carving target screen intensity is 95+ (140-95)/5=104, screen intensity is carried out Primary regulation, by screen
Brightness regulation is 104；The rest may be inferred, until screen intensity is adjusted to 140.Wherein, T1 to T16 it
Between the time interval in former and later two moment every can be 1 second, such as, the time interval between T1 and T2
It it is 1 second.
As can be seen from the above table, the amplitude of accommodation of screen intensity tapers into, it is ensured that screen intensity regulates
During good transition, protection user eyes and ensure screen-picture quality, better user experience.
It should be noted that in above-mentioned screen intensity regulation each time, regulation can be according to screen each time
The minimal adjustment time of curtain brightness is divided into repeatedly divides regulation to complete.Such as, screen intensity is adjusted to by 70
Time needed for 84 is 1 second, and the minimal adjustment time of described screen intensity is 50 milliseconds, then screen is bright
Degree is adjusted to 84 by 70 and regulation can be divided to complete, to reach screen by 20 (1 second/50 milliseconds) sublinear
The purpose that brightness " soft " changes.
The control method of the screen intensity that the present embodiment provides, by the current light of detection terminal local environment
Degree, according to described current brightness, based on predetermined luminance corresponding relation, determines and estimates screen intensity, calculates
The described amplitude of variation estimating screen intensity and current screen brightness, the change as described environmental light brightness becomes
Gesture, according to described amplitude of variation with described estimate screen intensity, calculates described target screen intensity, according to institute
State target screen intensity the screen intensity of described terminal is adjusted, when ambient light changes greatly around,
Can be by screen intensity quickly (in 1 second) regulation to the brightness being suitable for, ambient light change is not around
Time the biggest, can be soft screen intensity be regulated extremely is suitable for brightness, it is achieved that the regulation energy to screen intensity
Enough it is adapted to the situation of change of surrounding environment light, improves the experience satisfaction of user.
Embodiment three
Fig. 5 gives the structural representation of the adjusting means of the screen intensity that the embodiment of the present invention three provides, as
Shown in Fig. 5, the adjusting means of the screen intensity that the present embodiment provides includes: brightness detector unit 41, screen
Curtain brightness determines unit 42 and screen intensity regulation unit 43.
Wherein, described brightness detector unit 41, for detecting the current brightness of terminal local environment；Institute
State screen intensity and determine unit 42, be used for according to described current brightness and the variation tendency of environmental light brightness,
Determining target screen intensity, wherein, the variation tendency of described environmental light brightness is true according to described current brightness
Fixed；Described screen intensity regulation unit 43, for according to the described target screen intensity screen to described terminal
Brightness is adjusted.
Further, described screen intensity determines that unit 42 includes:
Estimate screen intensity and determine subelement, for according to described current brightness, corresponding based on predetermined luminance
Relation, determines and estimates screen intensity；
Screen intensity amplitude of variation computation subunit, be used for calculating described in estimate screen intensity bright with current screen
The amplitude of variation of degree, as the variation tendency of described environmental light brightness；
Target screen brightness calculation subelement, for according to described amplitude of variation with described estimate screen intensity,
Calculate described target screen intensity.
Preferably, described target screen brightness calculation subelement specifically for:
According to described amplitude of variation with described estimate screen intensity, determine mesh based on following screen intensity adjustment function
Mark screen intensity:
Wherein, S is target screen intensity, S1For current screen brightness, S2For estimating screen intensity, SThrd1For
First predetermined threshold value, SThrd2Being the second predetermined threshold value, Δ T is brightness regulation speed parameter.
Further, also include:
Brightness regulation speed parameter determines subelement, for determining brightness regulation speed according to described amplitude of variation
Parameter.
Further, estimate described in screen intensity determine subelement specifically for:
According to described current brightness, function based on following predetermined luminance corresponding relation, determine and estimate screen
Brightness:
F (X)=α X+Smin,
Wherein, f (X) is for estimating screen intensity, and X is current brightness, α=(Smax-Smin)/Lmax, SminFor
The default minimum brightness of screen, SmaxFor the preset maximum brightness of screen, LmaxFor screen adjustment to SmaxTime corresponding
Photosensitive value.
Further, described brightness detector unit 41 specifically for:
In preset duration, the brightness of terminal local environment is gathered at least twice, and calculates collection
The meansigma methods of brightness, as described current brightness.
The said goods can perform the method that any embodiment of the present invention is provided, and possesses the corresponding merit of execution method
Can module and beneficial effect.
Device embodiment described above is only schematically, wherein said illustrates as separating component
Unit can be or may not be physically separate, and the parts shown as unit can be or also
Can not be physical location, i.e. may be located at a place, or can also be distributed on multiple NE.
Some or all of module therein can be selected according to the actual needs to realize the purpose of the present embodiment scheme.
Those of ordinary skill in the art, in the case of not paying performing creative labour, are i.e. appreciated that and implement.
Through the above description of the embodiments, those skilled in the art is it can be understood that arrive each enforcement
Mode can add the mode of required general hardware platform by software and realize, naturally it is also possible to pass through hardware.
Based on such understanding, the part that prior art is contributed by technique scheme the most in other words is permissible
Embodying with the form of software product, this computer software product can be stored in computer-readable storage medium
In matter, such as ROM/RAM, magnetic disc, CD etc., use so that a computer equipment (can including some instructions
To be personal computer, server, or the network equipment etc.) perform certain of each embodiment or embodiment
A little methods described in part.
Last it is noted that above example is only in order to illustrate the technical scheme of the embodiment of the present invention, rather than
It is limited；Although the embodiment of the present invention being described in detail with reference to previous embodiment, this area
Those of ordinary skill is it is understood that the technical scheme described in foregoing embodiments still can be repaiied by it
Change, or wherein portion of techniques feature is carried out equivalent；And these amendments or replacement, do not make phase
The essence answering technical scheme departs from the spirit and scope of the embodiment of the present invention each embodiment technical scheme.
Claims (12)
1. the control method of a screen intensity, it is characterised in that including:
The current brightness of detection terminal local environment；
According to described current brightness and the variation tendency of environmental light brightness, determine target screen intensity, its
In, the variation tendency of described environmental light brightness determines according to described current brightness；
According to described target screen intensity, the screen intensity of described terminal is adjusted.
Method the most according to claim 1, it is characterised in that according to described current brightness and ring
The variation tendency of border brightness, determines that target screen intensity includes:
According to described current brightness, based on predetermined luminance corresponding relation, determine and estimate screen intensity；
The amplitude of variation of screen intensity and current screen brightness is estimated, as described environmental light brightness described in calculating
Variation tendency；
According to described amplitude of variation with described estimate screen intensity, calculate described target screen intensity.
Method the most according to claim 2, it is characterised in that according to described amplitude of variation and described pre-
Estimate screen intensity, calculate described target screen intensity and include:
According to described amplitude of variation with described estimate screen intensity, determine mesh based on following screen intensity adjustment function
Mark screen intensity:
Wherein, S is target screen intensity, S1For current screen brightness, S2For estimating screen intensity, SThrd1For
First predetermined threshold value, SThrd2Being the second predetermined threshold value, Δ T is brightness regulation speed parameter.
Method the most according to claim 3, it is characterised in that according to described amplitude of variation and described pre-
Estimate screen intensity, before determining target screen intensity based on screen intensity adjustment function, also include:
Brightness regulation speed parameter is determined according to described amplitude of variation.
Method the most according to claim 2, it is characterised in that according to described current brightness, based on
Predetermined luminance corresponding relation, determines that estimating screen intensity includes:
According to described current brightness, function based on following predetermined luminance corresponding relation, determine and estimate screen
Brightness:
F (X)=α X+Smin,
Wherein, f (X) is for estimating screen intensity, and X is current brightness, α=(Smax-Smin)/Lmax, SminFor
The default minimum brightness of screen, SmaxFor the preset maximum brightness of screen, LmaxFor screen adjustment to SmaxTime corresponding
Photosensitive value.
Method the most according to claim 1, it is characterised in that the current light of detection terminal local environment
Brightness includes:
In preset duration, the brightness of terminal local environment is gathered at least twice, and calculates collection
The meansigma methods of brightness, as described current brightness.
7. the adjusting means of a screen intensity, it is characterised in that including:
Brightness detector unit, for detecting the current brightness of terminal local environment；
Screen intensity determines unit, is used for according to described current brightness and the variation tendency of environmental light brightness,
Determining target screen intensity, wherein, the variation tendency of described environmental light brightness is true according to described current brightness
Fixed；
Screen intensity regulation unit, for entering the screen intensity of described terminal according to described target screen intensity
Row regulation.
Device the most according to claim 7, it is characterised in that described screen intensity determines that unit includes:
Estimate screen intensity and determine subelement, for according to described current brightness, corresponding based on predetermined luminance
Relation, determines and estimates screen intensity；
Screen intensity amplitude of variation computation subunit, be used for calculating described in estimate screen intensity bright with current screen
The amplitude of variation of degree, as the variation tendency of described environmental light brightness；
Target screen brightness calculation subelement, for according to described amplitude of variation with described estimate screen intensity,
Calculate described target screen intensity.
Device the most according to claim 8, it is characterised in that described target screen brightness calculation sub-list
Unit specifically for:
According to described amplitude of variation with described estimate screen intensity, determine mesh based on following screen intensity adjustment function
Mark screen intensity:
Wherein, S is target screen intensity, S1For current screen brightness, S2For estimating screen intensity, SThrd1For
First predetermined threshold value, SThrd2Being the second predetermined threshold value, Δ T is brightness regulation speed parameter.
Device the most according to claim 9, it is characterised in that also include:
Brightness regulation speed parameter determines subelement, for determining brightness regulation speed according to described amplitude of variation
Parameter.
11. devices according to claim 8, it is characterised in that described in estimate screen intensity and determine son
Unit specifically for:
According to described current brightness, function based on following predetermined luminance corresponding relation, determine and estimate screen
Brightness:
F (X)=α X+Smin,
Wherein, f (X) is for estimating screen intensity, and X is current brightness, α=(Smax-Smin)/Lmax, SminFor
The default minimum brightness of screen, SmaxFor the preset maximum brightness of screen, LmaxFor screen adjustment to SmaxTime corresponding
Photosensitive value.
12. devices according to claim 7, it is characterised in that described brightness detector unit is concrete
For:
In preset duration, the brightness of terminal local environment is gathered at least twice, and calculates collection
The meansigma methods of brightness, as described current brightness.
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