CN102097056B - Electronic device and method for controlling backlight brightness - Google Patents
Electronic device and method for controlling backlight brightness Download PDFInfo
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- CN102097056B CN102097056B CN200910250286.8A CN200910250286A CN102097056B CN 102097056 B CN102097056 B CN 102097056B CN 200910250286 A CN200910250286 A CN 200910250286A CN 102097056 B CN102097056 B CN 102097056B
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Abstract
The invention provides an electronic device and a method for controlling backlight brightness. The method for controlling backlight brightness is used for adjusting the backlight brightness of a display screen of the electronic device. The method comprises the following steps of: detecting the ambient brightness of the electronic device to output an ambient brightness signal; comparing the ambient brightness signal with the present backlight brightness of the display screen, and determining whether to adjust the backlight brightness of the display screen; if the comparison result shows that the reduction degree of the ambient brightness is lower than a reduction threshold, selecting an adjustment value from a plurality of step values to gradually reduce the backlight brightness according to the present backlight brightness so that the tendency of the backlight brightness corresponds to the target backlight brightness of the ambient brightness signal, wherein the step values comprise a first step value and a second step value, and the absolute values of the brightness of the first step value and the second step value are different; and adjusting the backlight brightness of the display screen according to the present backlight brightness and the adjustment value.
Description
Technical field
The present invention relates to a kind of method of electronic installation and control backlight illumination thereof, particularly relate to a kind of method that there is the electronic installation of stable backlight illumination and control backlight illumination.
Background technology
In flourish epoch now of communication, electronic installation, for example, be mobile phone, personal digital assistant or intelligent mobile phone, become indispensable electronic product in modern's life.Electronic installation has a detecting unit, it is for example photodetector, it is used for the ambient brightness of detection. electronics to control the backlight illumination of the display screen of electronic installation, except can be along with the residing environment of user provides suitable backlight illumination, the relative loss of power that has also reduced display screen.
Yet detecting unit is to be generally embedded in electronic installation around, it is to very sensitive of the variation of extraneous light.That is to say, if user's in equivalent environment (that is under same brightness) rocks electronic installation, the signal that detecting unit detects can be subject to incident light detecting device angle variation and exert an influence, to cause the unsettled situation of backlight illumination of display screen.
The signal that can provide according to detecting unit due to electronic installation is directly adjusted the backlight illumination of display screen, now, because the instability of above-mentioned detection or electronic installation are in bright while transferring dark environment to, user can feel the backlight illumination generation acute variation of display screen, so, can cause user's eyes not feel well.
Summary of the invention
The present invention is mainly to provide a kind of electronic installation and controls the method for backlight illumination, its according to the comparatively sharp brightness of human eye to select a suitable adjusted value to reduce gradually the backlight illumination of display screen from a plurality of step brightness, the discomfort causing to avoid user to feel the backlight illumination generation acute variation of display screen.
According to an aspect of the present invention, a kind of method of controlling backlight illumination is proposed, in order to adjust the backlight illumination of the display screen of electronic installation.The method comprises the following steps.First, the ambient brightness of detection. electronics, with output environment luminance signal.Then, according to the current backlight illumination of ambient brightness signal and display screen, determine whether to adjust the comparison of the backlight illumination of display screen.Then, if the reduction degree of comparative result display environment brightness is lower than reducing threshold value, according to current backlight illumination, from a plurality of step values, select an adjusted value little by little to reduce backlight illumination, so that its trend is corresponding to the target backlight luminance of ambient brightness signal, these step values comprise the first step value and the second step value, and wherein the absolute value of first, second step value is not identical.Afterwards, according to current backlight illumination and adjusted value, adjust the backlight illumination of display screen.
According to a further aspect in the invention, propose a kind of electronic installation, comprise display screen, detecting unit and processing unit.Detecting unit is in order to the ambient brightness of detection. electronics, with output environment luminance signal.Processing unit is in order to determine whether to adjust the comparison of the backlight illumination of display screen according to the current backlight illumination of ambient brightness signal and display screen, if the reduction degree of comparative result display environment brightness is lower than a reduction threshold value, according to current backlight illumination, from a plurality of step values, select an adjusted value little by little to reduce backlight illumination, so that its trend is corresponding to a target backlight luminance of ambient brightness signal, processing unit, more according to current backlight illumination and adjusted value, is adjusted the backlight illumination of display screen.Wherein these step values comprise the first step value and the second step value, and wherein the absolute value of first, second step value is not identical.
For foregoing of the present invention can be become apparent, special embodiment below, and be described with reference to the accompanying drawings as follows.
Accompanying drawing explanation
Fig. 1 shows the process flow diagram of method of the control backlight illumination of one embodiment of the invention.
Fig. 2 shows the embodiment of electronic installation of method of the control backlight illumination of application drawing 1.
Fig. 3 A shows the example according to a detail flowchart of the embodiment of the backlight brightness control method of Fig. 2.
Fig. 3 B shows the example according to a detail flowchart of the embodiment of the backlight brightness control method of Fig. 2.
Reference numeral explanation
10: display screen
30: detecting unit
50: processing unit
100: electronic installation
S202～S210, S302～S316, S304A～304C, S306A～306C: step
Embodiment
Please refer to Fig. 1 and Fig. 2, Fig. 1 shows the process flow diagram of the control backlight illumination method of one embodiment of the invention.Fig. 2 shows the embodiment of electronic installation of method of the control backlight illumination of application drawing 1.As shown in Figure 1, electronic installation 100 comprises display screen 10, detecting unit 30 and processing unit 50.Display screen 10 is for example tool flat-panel screens backlight, as utilizes fluorescence or light emitting diode (Light Emitting Diode) for liquid crystal display (Liquid Crystal Display) backlight.Detecting unit 30 sensed light signal, and this light signal is converted to electric signal.
For instance, detecting unit 30 is for example the ambient brightness for detection. electronics 100, and detected light signal is converted to electric signal.In one embodiment, detecting unit 30 is for example photodetector, and detecting device that certainly also can sensed luminance by other replaces.Processing unit 50 is for example the size that the current backlight illumination of the signal that detects according to detecting unit 30 and display screen judges whether to adjust this current backlight illumination.
For instance, human eye changes to dark ambient brightness in bright, the brightness of bearing for eyes is to secretly comparatively responsive by bright, when electronic installation is changed to bright when dark in ambient brightness, the present embodiment is to provide the backlight illumination that reduces gradually the display screen of electronic installation with the step value compared with small scale (Step Size), to avoid user to feel backlight illumination generation acute variation when watching display screen, thereby allow user feel comfortably cool when watching display screen.In addition, when electronic installation is changed to dark when bright in ambient brightness, because human eye is not sharper to this variation, thereby can directly increase backlight illumination according to the difference of the backlight illumination of ambient brightness and display screen, yet, increase backlight illumination and also can implement according to other method for designing, be to using the difference of backlight illumination of ambient brightness and display screen as the foundation of adjustment in the present embodiment, but do not limit category of the present invention.
As shown in Figure 2, the method for controlling backlight illumination is to adjust the backlight illumination of the display screen 10 of electronic installation 100, and the method comprises the following steps.First, as shown in step S202, the ambient brightness of detecting unit 30 detection. electronics 100, with output environment luminance signal S1.Then,, as shown in step S204, processing unit 50 determines whether to adjust the comparison of the backlight illumination of display screen 10 according to one of ambient brightness signal S1 and display screen 10 current backlight illumination.
Then, as shown in step S206, if the reduction degree of comparative result display environment brightness is lower than a reduction threshold value, according to current backlight illumination, from a plurality of step values, select an adjusted value little by little to reduce backlight illumination, so that its trend is corresponding to a target backlight luminance of ambient brightness signal S1.If the increase degree of comparative result display environment brightness is higher than an increase threshold value, perform step S210.These step values comprise the first step value and the second step value, and the absolute value of first, second step value is not identical.The step representative of this S206 is changed to and brightly backlight illumination is adjusted when dark at ambient brightness.
Afterwards, as shown in step S208, processing unit 50, according to current backlight illumination and adjusted value, is adjusted the backlight illumination of display screen 10.As shown in step S210, processing unit 50 is according to deciding adjusted value corresponding to a target backlight luminance of ambient brightness signal and a difference of a current backlight illumination.The step of this S210 represents that ambient brightness is changed to by secretly backlight illumination being adjusted when bright.Now according to the embodiment of the backlight brightness control method of Fig. 2, with the example of a detail flowchart, illustrate further as follows.
Please refer to Fig. 3 A and Fig. 3 B, it shows the example according to a detail flowchart of the embodiment of the backlight brightness control method of Fig. 2.In Fig. 3 A, as shown in step S302, the ambient brightness of detecting unit 30 detection. electronics 100, to export an ambient brightness signal S1.For instance, ambient brightness is for example relatively to change along with the residing environment of electronic installation 100, suppose that electronic installation 100 is under the stronger sun of light, now ambient brightness for example can be greater than electronic installation 100 in the weak indoor ambient brightness of light.
As shown in step S304, processing unit 50 determines whether to adjust the comparison of the backlight illumination of display screen 10 according to one of ambient brightness signal S1 and display screen 10 current backlight illumination.In this, the mode comparing from the current backlight illumination of display screen 10 according to ambient brightness signal S1 can be made different embodiments according to need.For instance, ambient brightness signal can correspond to luminance bit rank (brightness level), and it corresponds to the unit of backlight illumination, to compare with the current backlight illumination of display screen 10.In addition, these luminance bit rank also can correspond to an object brightness signal; This object brightness signal is for example pulsed modulation (PWM, pulse width modulation) value, and current backlight illumination also corresponds to a current pulsed modulation value.In certain embodiments, can use luminance bit rank or pulsed modulation value, or both all use, come for unit relatively.
For instance, step S304 more can comprise step S304A～304C.In step S304A, processing unit 50 judges whether the difference of the current backlight brightness values of target backlight luminance value and display screen 10 is more than or equal to an increase threshold value, if this difference is not more than or equal to increase threshold value, carry out the step S304B of the state (being for example to judge whether this sign is " 0 ") of processing unit 50 judgement symbols, if this difference is more than or equal to increase threshold value, perform step S316.
For instance, supposing that this difference is not more than or equal to increase threshold value, is to represent that electronic installation 100 is not in the ambient brightness bright by blackout changes, and state that now can first judgement symbol determines whether current brightness to increase.For instance, suppose that the state of sign is to represent that electronic installation 100 has finished in the front backlight illumination adjustment of once carrying out display screen 10 for " 0 ", now can adjust backlight illumination.The state of supposing sign is to represent that electronic installation 100 not yet completes the backlight illumination adjustment of a front display screen 10 for " 1 ", now can first wait for after previous brightness adjustment has completed and more current brightness being increased.In one embodiment, the state of this sign, when electronic installation 100 reopens, can for example be preset as " 0 ".Yet this increases threshold value and can design and adjust according to actual demand.In one embodiment, this increase threshold value can design according to the characteristic of human eye.
As shown in step S304C, if the state of the sign of step S304B is zero, processing unit 50 judges whether the difference on current luminance bit rank and rank, ambient brightness position is more than or equal to reduction threshold value.If the state of the sign of step S304B is non-vanishing, come back to step S302.Wherein luminance bit rank are for example corresponding to current backlight brightness values at present, and rank, ambient brightness position are for example corresponding to ambient brightness signal.
For instance, suppose that this difference is to be more than or equal to reduction threshold value, represent that electronic installation 100 is from may be in being turned during dark ambient brightness changes by bright.In one embodiment, user may use electronic installation and move towards gradually indoor under the large sun, when user enter indoor after due to the minimizing of ambient brightness, the backlight illumination of the display screen 10 of electronic installation 100 also can relatively be reduced to the backlight illumination that allows user can normally watch display screen, thereby saves electrical source consumption.In another embodiment, step S304C also can judge whether current backlight brightness values and difference corresponding to the brightness value of ambient brightness signal are greater than by processing unit 50 and reduces threshold value and realized.In implementation, also can select the reduction threshold value corresponding to luminance bit rank or brightness value according to demand.
Yet, when human eye is in being turned during dark ambient brightness changes by bright, for brightness by bright turn secretly reduce comparatively sensitive, for avoiding because reducing the acute variation of backlight illumination generation, eyes not being felt well, the following step of the present embodiment is that a plurality of step brightness is provided, according to ambient brightness, to select suitable step value little by little to reduce the backlight illumination of display screen 10, to avoid allowing user's eyes not feel well in above-mentioned situation, and obtain the backlight illumination of stable display screen.
Then, the present embodiment enters step S306, if the reduction degree of the comparative result display environment brightness of step S304 is lower than a reduction threshold value, according to current backlight illumination, from a plurality of step values, select an adjusted value little by little to reduce backlight illumination, so that its trend is corresponding to a target backlight luminance of ambient brightness signal.These step values comprise the first step value and the second step value, and wherein the absolute value of first, second step value is not identical.
For instance, step S306 also can comprise step S306A～306C.As shown in step S306A, processing unit judges whether current backlight brightness values is more than or equal to a signal threshold value, if backlight brightness values is not more than or equal to this signal threshold value at present, carries out the step S306B selecting corresponding to an adjusted value of the first step value; If backlight brightness values is more than or equal to this signal threshold value at present, carry out the step S306C selecting corresponding to an adjusted value of the second step value.
For instance, this current backlight brightness values is for example corresponding current backlight illumination, and current backlight illumination also corresponds to a current pulse-modulated signal, that is to say, backlight brightness values is for example corresponding current pulse-modulated signal at present.Certainly, in other embodiments, this determining step can utilize pulse-modulated signal or backlight brightness values, or both all use, and comes for unit relatively.Now describe for example step S306A～306B in detail as follows.
For instance, human eye is in being turned during dark ambient brightness changes by bright, except the brightness of the display screen for watched by bright turn secretly comparatively sensitive, more sharp for a special brightness range.Suppose that current backlight brightness values is not more than or equal to this signal threshold value, be represent user human eye in this special brightness range, in this, the present embodiment can provide the backlight illumination that reduces gradually display screen compared with the modulation value of small scale, in other words, that is select to reduce this backlight illumination corresponding to the adjusted value of the first step value (such as being less than the second brightness value), to avoid human eye not feel well because of brightness acute variation.In one embodiment, the absolute value of the adjusted value of this first brightness step is for example 5.In implementation, for example, be to decide the ratio corresponding to the pulsed modulation value of this adjusted value with following formula:
Wherein V is expressed as pulsed modulation value, represents the work period (duty cycle) of the pulse-modulated signal of a correspondence, and X is expressed as adjusted value, and X is the value between 0 to 256.
For instance, suppose that current backlight brightness values is more than or equal to signal threshold value, that the human eye that represents user does not bear the brightness in above-mentioned special brightness range, that is to say, now human eye can't utilize the backlight illumination generation acute variation of feeling display screen 10 compared with large scale reduction backlight illumination, in this, can use the backlight illumination that reduces display screen compared with the modulation value of large scale, in other words, be for example to select to reduce this backlight illumination corresponding to the adjusted value of the second step value.In one embodiment, the absolute value of the adjusted value of this second step value is for example 20, the second step value is to be greater than the first step value, that is to say, the range of decrease of supposing backlight illumination is a constant brightness scope, utilizes the adjusted value of the second step value to reduce this constant brightness meeting fast in utilizing the adjusted value of the first step value to reduce.
Yet, in step S306, also can design a plurality of signal threshold values the more step values of arranging in pairs or groups, to adjust the backlight illumination of display screen from the adjusted value of more different sizes according to ambient brightness, the present embodiment is that to take a signal threshold value and first, second step value be example explanation, but not as restriction.In another embodiment, can design two signal threshold values, and the step value of three the different sizes of arranging in pairs or groups, for you to choose as adjusted value.
Then, enter the step S308 of the present embodiment, in Fig. 3 B, as shown in step S308, according to current backlight illumination and adjusted value, adjust the backlight illumination of display screen.So, when user watches display screen in the ambient brightness bright by blackout changes, can not cause human eye not felt well in turning dark acute variation by bright at backlight illumination, and also can reach the effect of saving power supply.
As shown in step S310, judge whether current backlight illumination meets target backlight luminance, if backlight illumination meets target backlight luminance at present, carry out the step S312 that processing unit 50 will be set sign (being for example sign to be set as to " 0 ", to have represented the adjustment of backlight illumination) and current backlight illumination will be updated to target backlight luminance.If backlight illumination does not meet target backlight luminance at present, carry out processing unit 50 and set to indicate (to be for example sign to be set as to " 1 ", with representative, not yet complete the adjustment of backlight illumination) step S314, and again perform step S302, until brightness at present meets object brightness.Wherein having upgraded complete target backlight luminance for example can apply while once carrying out this flow process upper.
For instance, after execution of step S312, can design the step that it continues according to actual demand.In one embodiment, after execution of step S312, can get back to step S302, continue testing environment brightness.
Please refer to step S304A, if the difference of current backlight brightness values and target backlight luminance value is more than or equal to increase threshold value, perform step S316.As shown in step S316, processing unit 50 is according to deciding adjusted value corresponding to a target backlight luminance of ambient brightness signal and a difference of a current backlight illumination.For instance, because human eye is in the ambient brightness bright by blackout changes, also insensitive for the change of brightness, in this, the present embodiment is to using this difference as adjusted value, is used as increasing the foundation of current backlight illumination, so, also can do suitable adjustment and design according to the category of application.
In another embodiment, the corresponding relation on ambient brightness signal and rank, ambient brightness position, or the reduction threshold value in step S304C, even increase threshold value, all can do dynamic adjustment, meaning is that the brightness according to the environment of living in of electronic installation 100 decides, to make finer brightness adjustment in response to environment.
For instance, for example can design according to the variation range of ambient brightness the corresponding relation on these luminance bit rank.That is to say, can will for example, corresponding to a plurality of environment (outdoor, indoor), descend in certain hour, the brightness value that may obtain according to ambient brightness, for example in 1 minute, obtain the brightness value in a particular range, as 100 to 200, be considered as belonging at present indoor environment, and then the corresponding relation BL1 on definition one luminance bit rank; And as in 1 minute the range of luminance values that obtains be 110 to 300, be considered as belonging to outdoor environment, and then define the corresponding relation BL2 on another luminance bit rank.In one embodiment, suppose in indoor detected brightness value 200, according to above-mentioned relation BL1, can correspond to luminance bit rank is 180, but at outdoor detected brightness value 200, according to above-mentioned relation BL2, can correspond to luminance bit rank is 200.In addition, in other embodiments, luminance bit rank or other corresponding threshold value be as designed and adjust according to actual demand, and the corresponding relation on these luminance bit rank can be able to be stored in electronic installation 100, or implement with lookup table mode, with the brightness value corresponding to obtaining.In addition, during enforcement, can also obtain by alternate manner, therefore not take this embodiment as restriction.
So, utilize the mode that obtained luminance signal or brightness value are converted to luminance bit rank can be simplified in the complexity in implementation.Yet step S304 also can realize according to ambient brightness signal and corresponding to the signal of current backlight illumination, not take this embodiment as restriction.
In the embodiment of other application, ambient brightness signal also can come filtered noise to obtain mean value as to handle averagely by the sampling value obtaining.For instance, suppose that user rocks electronic installation, in the ambient brightness signal that makes to detect at detecting unit 30, produce noise, this noise may be the good fortune size of shaking (being for example to rock electronic installation to cause under same brightness) corresponding to the fast rise in ambient brightness signal or decline, in this, the present embodiment also can be got the ambient brightness signal in the schedule time one to handle averagely to filter these issuable noises, and carries out this filtration and can be realized by hardware or software.Certainly, this to handle averagely also can be realized by other compute mode or other hardware, in another embodiment, also can repeat to handle averagely to ambient brightness signal, obtains ambient brightness signal more accurately.
The electronic installation of the embodiment of the present invention and backlight brightness control method thereof are except the backlight illumination of display screen that can adjust electronic installation along with ambient brightness is to realize the effect of power saving, owing to selecting suitable step brightness to reduce backlight illumination according to ambient brightness, in this, can allow user be in by bright turns during dark ambient brightness changes, can not feel that backlight illumination has obvious acute variation, to allow eyes not feel well, in addition, also can maintain the backlight illumination of stable display screen.
In sum, although the present invention discloses as above with embodiment, so it is not in order to limit the present invention.Those skilled in the art can be used for a variety of modifications and variations under the premise without departing from the spirit and scope of the present invention.Therefore, protection scope of the present invention is as the criterion with claim of the present invention.
Claims (14)
1. control a method for backlight illumination, in order to adjust the backlight illumination of a display screen of an electronic installation, the method comprises:
(a) detect the ambient brightness of this electronic installation, to export an ambient brightness signal;
(b) one of this ambient brightness signal and this display screen current backlight illumination relatively, to determine whether to adjust the backlight illumination of this display screen;
(c) if the comparative result of step (b) shows the reduction degree of this ambient brightness, be to be greater than a reduction threshold value, according to this current backlight illumination, from a plurality of step values, select an adjusted value little by little to reduce this backlight illumination, so that its trend is corresponding to a target backlight luminance of this ambient brightness signal, these step values comprise one first step value and one second step value, and wherein the absolute value of this first, second step value is not identical; And
(d), according to this current backlight illumination and this adjusted value, adjust this backlight illumination of this display screen.
2. the method for claim 1, also comprises:
If it is higher than an increase threshold value that the comparative result of step (b) shows the increase degree of this ambient brightness, according to deciding this adjusted value corresponding to a target backlight luminance of this ambient brightness signal and a difference of a current backlight illumination.
3. the method for claim 1, wherein the reduction degree of this ambient brightness is to decide according to this ambient brightness signal and the current backlight brightness values corresponding to this current backlight illumination.
4. method as claimed in claim 3, wherein the reduction degree of this ambient brightness is corresponding to the brightness value of this ambient brightness signal and the difference of this current backlight brightness values.
5. the method for claim 1, wherein in the step of an adjusted value, comprising selecting from these step values:
Whether judgement is less than a signal threshold value corresponding to a current backlight brightness values of this current backlight illumination; And
If this current backlight brightness values is less than this signal threshold value, select the adjusted value corresponding to this first step value; If this current backlight brightness values is not less than this signal threshold value, select the adjusted value corresponding to this second step value;
Wherein the absolute value corresponding to the adjusted value of this first step value is less than the absolute value corresponding to the adjusted value of this second step value.
6. the method for claim 1, also comprises:
Judge whether this current backlight illumination meets this target backlight luminance; And
If this current backlight illumination meets this target backlight luminance, this current backlight illumination is updated to this target backlight luminance.
7. method as claimed in claim 6, if wherein this current backlight illumination does not meet this target backlight luminance, re-executes step (b), until this current backlight illumination meets this target backlight luminance.
8. an electronic installation, comprising:
One display screen;
One detecting unit, in order to detect the ambient brightness of this electronic installation, to export an ambient brightness signal; And
One processing unit, in order to a current backlight illumination of this ambient brightness signal and this display screen relatively, to determine whether to adjust the backlight illumination of this display screen, if it is to be greater than a reduction threshold value that comparative result shows the reduction degree of this ambient brightness, according to this current backlight illumination, from a plurality of step values, select an adjusted value little by little to reduce this backlight illumination, so that its trend is corresponding to a target backlight luminance of this ambient brightness signal, this processing unit, also according to this current backlight illumination and this adjusted value, is adjusted this backlight illumination of this display screen;
Wherein these step values comprise one first step value and one second step value, and wherein the absolute value of this first, second step value is not identical.
9. electronic installation as claimed in claim 8, wherein this processing unit during higher than an increase threshold value, decides this adjusted value according to a difference of the target backlight luminance corresponding to this ambient brightness signal and a current backlight illumination in order to the increase degree that shows this ambient brightness at comparative result.
10. electronic installation as claimed in claim 8, wherein the reduction degree of this ambient brightness is to decide according to this ambient brightness signal and the current backlight brightness values corresponding to this current backlight illumination.
11. electronic installations as claimed in claim 10, wherein the reduction degree of this ambient brightness is corresponding to the brightness value of this ambient brightness signal and the difference of this current backlight brightness values.
12. electronic installations as claimed in claim 8, wherein this processing unit in order to when selecting an adjusted value from these step values, whether judgement is less than a signal threshold value corresponding to a current backlight brightness values of this current backlight illumination, when if this current backlight brightness values is less than this signal threshold value, this processing unit is selected the adjusted value corresponding to this first step value; If this current backlight brightness values is not less than this signal threshold value, this processing unit is selected the adjusted value corresponding to this second step value;
Wherein the absolute value corresponding to the adjusted value of this first step value is the absolute value being less than corresponding to the adjusted value of this second step value.
13. electronic installations as claimed in claim 8, wherein this processing unit is also in order to judge whether this current backlight illumination meets this target backlight luminance, if this current backlight illumination meets this target backlight luminance, this processing unit is updated to this target backlight luminance by this current backlight illumination.
14. electronic installations as claimed in claim 13, wherein this processing unit is not in order to when this current backlight illumination meets this target backlight luminance, according to one of this ambient brightness signal and this display screen current backlight illumination, determine whether to adjust the comparison of the backlight illumination of this display screen, until this current backlight illumination meets this target backlight luminance.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102737608B (en) | 2012-06-14 | 2013-11-20 | 飞天诚信科技股份有限公司 | Method and device for improving adaptation to light intensity |
| DE102012212386A1 (en) * | 2012-07-16 | 2014-01-16 | Siemens Aktiengesellschaft | Process image of a technical plant |
| CN103200370B (en) * | 2013-03-19 | 2017-08-25 | 海信集团有限公司 | The method and system that adjustable liquid crystal display video screen is shown |
| CN104240678B (en) * | 2013-06-17 | 2017-12-29 | 华为终端（东莞）有限公司 | Adjust the method and apparatus and terminal of screen backlight brightness |
| CN103327148B (en) * | 2013-06-28 | 2016-02-10 | 惠州Tcl移动通信有限公司 | Based on implementation method and the mobile terminal of the brightness of mobile terminal adjustment screen backlight |
| CN103414832B (en) * | 2013-08-30 | 2017-03-29 | 努比亚技术有限公司 | Adjust the method and device of screen luminance of terminal |
| US9530342B2 (en) * | 2013-09-10 | 2016-12-27 | Microsoft Technology Licensing, Llc | Ambient light context-aware display |
| JP2017513050A (en) * | 2014-03-13 | 2017-05-25 | ▲華▼▲為▼▲終▼端有限公司 | Method and electronic device for adjusting backlight brightness |
| CN104168371A (en) * | 2014-08-08 | 2014-11-26 | Tcl通讯（宁波）有限公司 | Method for adjusting backlight brightness of mobile terminal and mobile terminal |
| CN104318884B (en) * | 2014-10-19 | 2017-02-15 | 平顶山学院 | Mobile communication terminal and screen control device for the same |
| CN105845099B (en) * | 2015-01-15 | 2018-12-18 | 深圳市科曼医疗设备有限公司 | Screen intensity display methods and device |
| US10019925B2 (en) * | 2015-08-06 | 2018-07-10 | Mediatek Inc. | Electronic device capable of displaying and performing color compensation and color compensation method |
| CN105139827A (en) * | 2015-08-07 | 2015-12-09 | 惠州西玛电子有限公司 | Automatic backlight adjustment method for vehicle-mounted entertainment system |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5617112A (en) * | 1993-12-28 | 1997-04-01 | Nec Corporation | Display control device for controlling brightness of a display installed in a vehicular cabin |
-
2009
- 2009-12-11 CN CN200910250286.8A patent/CN102097056B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5617112A (en) * | 1993-12-28 | 1997-04-01 | Nec Corporation | Display control device for controlling brightness of a display installed in a vehicular cabin |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN102097056A (en) | 2011-06-15 |
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