CN109243383A - A kind of back light brightness regulating method and display device of display screen - Google Patents
A kind of back light brightness regulating method and display device of display screen Download PDFInfo
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- CN109243383A CN109243383A CN201811328859.XA CN201811328859A CN109243383A CN 109243383 A CN109243383 A CN 109243383A CN 201811328859 A CN201811328859 A CN 201811328859A CN 109243383 A CN109243383 A CN 109243383A
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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
Abstract
The present invention relates to field of display technology, disclose the back light brightness regulating method and display device of a kind of display screen, for promoting user's visual experience, the described method includes: being obtained and the matched target backlight luminance of environment present intensity when determining that the brightness of display screen local environment changes；The backlight illumination of the display screen is repeatedly adjusted, until the backlight illumination of the display screen is adjusted to the target backlight luminance, wherein the last backlight illumination adjusted result before the speed adjusted every time is adjusted by closely this time determines.
Description
Technical field
The present invention relates to the back light brightness regulating method and display screen of field of display technology more particularly to a kind of display screen dresses
It sets.
Background technique
Currently, most of display devices such as smart phone, computer etc. all have the function of automatic backlight brightness regulation, i.e.,
When intensity of illumination changes, the backlight illumination of display device can also change therewith, for example, when illumination is stronger, display device
Backlight illumination will brighten automatically, when illumination is darker, the backlight illumination of display device will be automatic dimmed.But it is existing
In automatic backlight brightness regulation, if the intensity of illumination of environment where display screen changes, the backlight illumination of display screen can be with
One fixed speed adjusts variation, this backlight illumination adjustment speed at the uniform velocity, in the intensity of illumination of display screen local environment
When changing, human eye can be made to generate a degree of bright hopping sense, visual experience is poor, therefore, in automatic backlight brightness tune
When section, how to promote the visual experience of user is a technical issues that need to address.
Summary of the invention
The embodiment of the invention provides a kind of back light brightness regulating method of display screen and display devices, use for being promoted
Family visual experience avoids bright jump to burden caused by user's human eye.
In a first aspect, the embodiment of the invention provides a kind of back light brightness regulating methods of display screen, comprising:
When determining that the brightness of display screen local environment changes, obtain and the matched target of environment present intensity
Backlight illumination；
The backlight illumination of the display screen is repeatedly adjusted, until the backlight illumination of the display screen is adjusted to institute
State target backlight luminance, wherein the speed adjusted every time is by the last backlight illumination adjusted result before closely this time adjusting
It determines.
Optionally, the more low then adjustment speed of the backlight illumination of the display screen is slower, and the backlight illumination of the display screen is got over
It is high then adjustment speed is faster.
Optionally, the method also includes:
Appoint Primary regulation in the multiple adjusting, the last time before obtaining closely described Primary regulation is adjusted
Display backlight brightness later；
Obtain the backlight illumination adjustment speed change rate of the display screen；
According to the change rate and the display backlight brightness, the adjustment speed for appointing Primary regulation is determined；
And the backlight illumination of the display screen is adjusted according to determining adjustment speed.
Optionally, the backlight illumination that the display screen is adjusted according to determining adjustment speed, specifically includes:
According to determining adjustment speed, the adjusting step for appointing Primary regulation is obtained, the adjusting step refers to every time
The backlight brightness values of adjusting；
According to the adjusting step, the backlight illumination of the display screen is adjusted.
Optionally, the backlight illumination adjustment speed change rate for obtaining the display screen, specifically includes:
The maximum value and minimum value of the display backlight brightness regulation speed are obtained, and obtains the back of the display screen
Brightness maximum value and minimum value；
According to the maximum value of the adjustment speed and minimum value and backlight illumination maximum value and minimum value, it is bright to obtain backlight
Spend adjustment speed change rate.
Optionally, described according to the change rate and the display backlight brightness, determine the tune for appointing Primary regulation
Speed is saved, specifically:
Pass through calculating formula: Ramp_rate=Ramp_k* (Brightness-minBri)+minRate determines described any
The adjustment speed of secondary adjusting；
Wherein, Ramp_rate is backlight illumination adjustment speed, and Ramp_k is backlight illumination adjustment speed change rate,
Brightness is the current backlight brightness of display screen, and minBri is the adjustable minimum backlight brightness of the display screen,
MinRate is the minimal adjustment speed of the display backlight brightness.
Second aspect, the embodiment of the invention provides a kind of display devices, comprising:
Module is obtained, for obtaining current with the environment when determining that the brightness of display screen local environment changes
The target backlight luminance of brightness matching；
Backlight illumination adjustment module is repeatedly adjusted for the backlight illumination to the display screen, until that described will show
The backlight illumination of display screen is adjusted to the target backlight luminance, wherein before the speed adjusted every time is adjusted by closely this time
Last backlight illumination adjusted result determines.
Optionally, the backlight illumination of the display screen the low, and the speed adjusted is slower, the backlight illumination of the display screen
More high, the speed adjusted is faster.
Optionally, the backlight illumination adjustment module, is also used to:
Appoint Primary regulation in the multiple adjusting, the last time before obtaining closely described Primary regulation is adjusted
Display backlight brightness later；
Obtain the backlight illumination adjustment speed change rate of the display screen；
According to the change rate and the display backlight brightness, the adjustment speed for appointing Primary regulation is determined；
And the backlight illumination of the display screen is adjusted according to determining adjustment speed.
Optionally, the backlight illumination adjustment module, is also used to:
According to determining adjustment speed, the adjusting step for appointing Primary regulation is obtained, the adjusting step refers to every time
The backlight brightness values of adjusting；
According to the adjusting step, the backlight illumination of the display screen is adjusted.
Optionally, the backlight illumination adjustment module, is also used to:
The maximum value and minimum value of the display backlight brightness regulation speed are obtained, and obtains the back of the display screen
Brightness maximum value and minimum value；
According to the maximum value of the adjustment speed and minimum value and backlight illumination maximum value and minimum value, it is bright to obtain backlight
Spend adjustment speed change rate.
Optionally, the backlight illumination adjustment module, is also used to:
Pass through calculating formula: Ramp_rate=Ramp_k* (Brightness-minBri)+minRate determines described any
The adjustment speed of secondary adjusting；
Wherein, Ramp_rate is backlight illumination adjustment speed, and Ramp_k is backlight illumination adjustment speed change rate,
Brightness is the current backlight brightness of display screen, and minBri is the adjustable minimum backlight brightness of the display screen,
MinRate is the minimal adjustment speed of the display backlight brightness.
In embodiments of the present invention, it when determining that the brightness of display screen local environment changes, obtains current with environment
The target backlight luminance of brightness matching determines this backlight illumination adjustment speed according to the current backlight illumination of display screen, so
Afterwards according to display backlight brightness after this adjusting, determine that backlight illumination adjusts corresponding adjustment speed next time, i.e., every time
Adjustment speed is determined by the backlight result that closely last time is adjusted, so that the backlight when speed adjusted every time and this time are adjusted
Brightness matching is avoided in the prior art, the light generated when being adjusted for different backlight illuminations using identical speed
It jumps to burden caused by human eye, so promoting user's visual experience.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, embodiment will be described below
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment.
Fig. 1 is a kind of application scenarios schematic diagram provided in an embodiment of the present invention；
Fig. 2 is a kind of back light brightness regulating method flow chart of display screen provided in an embodiment of the present invention；
Fig. 3 is the specific flow chart of display backlight brightness regulation provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram of backlight illumination adjustment speed change rate provided in an embodiment of the present invention；
Fig. 5 provides the backlight brightness values control of backlight illumination, backlight illumination adjustment speed and adjusting for the embodiment of the present invention
Table.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical solution of the present invention is clearly and completely described, it is clear that described embodiment is skill of the present invention
A part of the embodiment of art scheme, instead of all the embodiments.Based on the embodiment recorded in present specification, this field is general
Logical technical staff every other embodiment obtained without creative efforts, belongs to the technology of the present invention side
The range of case protection.
Part concept involved in the embodiment of the present invention is introduced below.
1) backlight: being a kind of form of illumination, be commonly used for LCD and show, usually from side or behind, irradiation is used
Increase the brightness in the illuminance and computer monitor, liquid crystal screen in low lighting environment, to show similar side with CRT
Formula produces light.
2) screen-refresh frame per second: i.e. frame per second refers to that frequency (speed over the display continuously occur in the bitmap images of referred to as frame
Rate), refreshing frequency is lower, image flicker, pause and shake it is more severe.
Automatic backlight brightness regulation scheme in the prior art, it is mainly bright comprising intensity of illumination and backlight by setting
The backlight illumination table of grading for spending mapping relations is adjusted the backlight illumination of its display screen according to backlight illumination table of grading.But
It was found by the inventors of the present invention that according to existing backlight illumination grade adjust display backlight brightness during, be by
It is adjusted according to a fixed adjustment speed, however, work as the display screen very strong place from dark place to intensity of illumination suddenly, or
Display screen suddenly from the very strong place of intensity of illumination to dark place when, if backlight illumination adjustment speed is all identical, human eye can be made to generate
A kind of light hopping sense, and then born to caused by human eye, visual experience is poor.
For this purpose, the present inventor is in view of human eye is to the adaptation intensity difference of display screen difference backlight illumination, i.e. people
Eye is to the having differences property of bright and dark light visual adaptation, and under compared with dark situation light, human eye changes backlight illumination more sensitive；Instead
It, under compared with bright ring border light, human eye is less sensitive to backlight illumination variation, therefore, can for the different backlight illumination of display screen
Using different adjustment speeds, human eye can not only be avoided to generate bright hopping sense, can also promote backlight illumination adjustment speed.
Based on this, the embodiment of the invention provides a kind of back light brightness regulating method of display screen, this method obtain with
The matched target backlight luminance of environment present intensity determines that this backlight illumination is adjusted according to the current backlight illumination of display screen
Speed determines that backlight illumination adjusts corresponding adjustment speed next time then according to display backlight brightness after this adjusting,
I.e. each adjustment speed is determined by the backlight result that closely last time is adjusted, so that when the speed adjusted every time and this time are adjusted
Backlight illumination matching, avoid human eye from generating bright hopping sense, human eye enable preferably to adapt to the variation of backlight illumination, so
Promote user's visual experience.
Further, due in the present invention backlight illumination more top adjustment speed it is faster, avoid backlight illumination because of locating ring
The variation of border brightness and make human eye generate bright hopping sense, mitigation give human eye burden, meanwhile, also improve backlight adjusting speed
Degree, so, further improve user's visual experience.
The back light brightness regulating method of display screen in the embodiment of the present invention is applied to application scenarios as shown in Figure 1,
In the application scenarios, including display device 10, outdoor environment 1 and indoor environment 2, wherein display device 10 can be
Smart phone, IPad, computer etc. have the terminal device of display screen, and the brightness of outdoor environment 1 is higher than the brightness of indoor environment 2.
When user holds the indoor ring that display device 10 enters from the outdoor environment 1 of light strong (i.e. brightness is high) dark
When border 2 (i.e. brightness is low), display device 10 can be according to back light brightness regulating method provided in an embodiment of the present invention, to its brightness
It is repeatedly adjusted, arrives target backlight luminance corresponding with 2 brightness of indoor environment until the backlight illumination of its display screen is adjusted.
Alternatively possible scene, when display device 10 is moved to outdoor environment 1 i.e. from brightness from above-mentioned indoor environment 2
When low environment is moved to environment of high brightness, the backlight that can also carry out display screen according to the method in the embodiment of the present invention is bright
Degree is adjusted.
It should be noted that application scenarios mentioned above are merely for convenience of understanding spirit and principles of the present invention and showing
Out, the embodiment of the present invention is unrestricted in this regard.On the contrary, the embodiment of the present invention can be applied to applicable any environment
The changed scene of brightness.
Referring to FIG. 2, being a kind of back light brightness regulating method of display screen provided in an embodiment of the present invention, comprising:
Step 201: when determining that the brightness of display screen local environment changes, obtaining matched with environment present intensity
Target backlight luminance.
Display screen in the embodiment of the present invention can be in the display devices such as smart phone, smart phone, iPad, computer
Display screen, be not especially limited in embodiments of the present invention.
In embodiments of the present invention, after the brightness of display screen local environment changes, in order to make the backlight of display screen
Brightness is adjustable backlight illumination corresponding as ambient brightness, can be by the ambient light sensor that is arranged in display device
Whether change to determine that display screen is currently located the brightness of environment, if ambient light sensor perceives display screen and is currently located
The brightness of environment changes, then can work as front ring to what ambient light sensor perceived by the processing module of display device
The light conditions in border are handled, and the brightness that display screen is currently located environment is obtained, then according to preset ambient brightness and back
The mapping table of brightness determines the corresponding backlight illumination of current environment brightness, which is to show
Shield the target backlight luminance adjusted.
Step 202: the backlight illumination of display screen repeatedly being adjusted, until the backlight illumination of display screen is adjusted to mesh
Mark backlight illumination, wherein the last backlight illumination adjusted result before the speed adjusted every time is adjusted by closely this time determines.
It in embodiments of the present invention, is the variation for allowing users to adapt to display backlight brightness, by the back of display screen
When brightness is adjusted to target backlight luminance, by way of multiple adjusting being carried out the backlight illumination to display screen, and
The speed of progress backlight illumination adjusting is determined by the result that the last backlight illumination before closely this time adjusting is adjusted every time, by
The backlight illumination of display screen is adjusted to target backlight luminance by step, so that when each brightness regulation speed and this time are adjusted
The backlight illumination of display screen matches, and avoids the bright hopping sense for generating human eye when backlight illumination changes, and mitigates and uses
The burden of family eyes, so, improve the visual experience of user.
For example, it is assumed that the backlight illumination of current display screen is 120, the speed of current backlight brightness regulation is 151, display screen
Target backlight luminance be 105, then first adjust display backlight brightness to 115 by 151 adjustment speed, then determine and display
Screen backlight illumination is 115 corresponding backlight illumination adjustment speeds, if corresponding backlight illumination tune when display backlight brightness is 115
Saving speed is 146, adjusts display backlight brightness to 110 according to 146 backlight illumination adjustment speed, then determines again and display
Screen backlight illumination is 110 corresponding adjustment speeds, if it is 140 that display backlight brightness, which is 110 corresponding speed, according still further to
140 adjustment speed adjusts display backlight brightness to 105.
Specifically, when the backlight illumination to display screen is adjusted, if display screen it is current backlight illumination it is low, target back
Brightness is high, then is adjusted according to backlight illumination adjustment speed from slow to fast；If the current backlight illumination of display screen is high,
Target backlight luminance is low, then is adjusted according to backlight illumination adjustment speed from fast to slow, i.e. the backlight illumination of display screen is got over
Low then adjustment speed is slower, and the more high then adjustment speed of the backlight illumination of display screen is faster, so can allow user that can preferably fit
The variation of display backlight brightness is answered, user's visual experience is improved.For example, when display backlight brightness is adjusted from high to low, such as
When display backlight brightness is adjusted to 105 by 120 in upper example, the speed that backlight illumination is adjusted is gradually reduced by 151 to 146, then
It is decreased to 140, adjustment speed is presented near slow variation tendency.Opposite, if display backlight brightness is adjusted to by 105
When 120, the speed that backlight illumination is adjusted then is increased by 140 to 146, is further added by 151, adjustment speed is presented from slowly to fast variation
Trend.
A kind of optional embodiment, in embodiments of the present invention, the adjusting of display backlight brightness can also be according to such as
Embodiment shown in Fig. 3 executes, and embodiment shown in Fig. 3 includes:
Step 301: appointing Primary regulation in multiple adjust, obtain and the last time before Primary regulation is closely appointed to adjust
Display backlight brightness later；
Step 302: obtaining the backlight illumination adjustment speed change rate of display screen；
Step 303: according to change rate and display backlight brightness, determining the adjustment speed for appointing Primary regulation；
Step 304: the backlight illumination of display screen is adjusted according to determining adjustment speed.
It in embodiments of the present invention, can be first from display device when the backlight illumination to display screen is adjusted
Backlight illumination adjustment module, obtain the backlight illumination of display screen after last backlight illumination is adjusted, the i.e. current back of display screen
Brightness, and obtain the backlight illumination adjustment speed change rate of display screen.Wherein, display backlight brightness regulation velocity variations
Rate be maximum value according to the maximum value and minimum value of the backlight illumination of display screen and display backlight brightness regulation speed and
What minimum value determined.
Specifically, display backlight brightness regulation percentage speed variation is the maximum backlight illumination adjustment speed and most of display screen
The difference of small backlight illumination adjustment speed, and display screen maximum backlight illumination and minimum backlight brightness value difference ratio, i.e. Ramp_
K=(maxRate-minRate)/(maxBri-minBri), wherein minRate is preset minimum backlight brightness regulation speed
Degree, maxRate are preset maximum backlight illumination adjustment speed, and minBri is preset minimum backlight brightness, and maxBri is pre-
If maximum backlight illumination, Ramp_k be backlight illumination adjustment speed change rate.Backlight illumination adjustment speed change rate is specific
It can be found in Fig. 4, display backlight brightness indicated with X-axis in Fig. 4, Y-axis indicates the speed Ramp_ of the adjusting of display backlight brightness
Rate is backlight illumination adjustment speed, and Brightness is display backlight brightness.
For example, it is assumed that the backlight illumination range of display screen is [10,255], the range of backlight illumination adjustment speed be [30,
300], i.e., the backlight illumination maximum value of display screen is 255, minimum value 10, and the maximum value of backlight illumination adjustment speed is 300,
Minimum value is 30, then display backlight brightness regulation speed, and change rate Ramp_k=(300-30)/(255-10) is approximately equal to
1.1。
In embodiments of the present invention, the backlight illumination adjustment speed of the current backlight brightness and display screen that obtain display screen becomes
After rate, it can be determined according to the display screen current backlight brightness of acquisition and the change rate of display backlight brightness regulation speed
The corresponding backlight illumination adjustment speed of current backlight brightness.Specifically, the corresponding adjustment speed of display screen current backlight brightness can
To be determined according to calculation formula Ramp_rate=Ramp_k* (Brightness-minBri)+minRate, wherein Ramp_
Rate is the speed that backlight illumination is adjusted, and Brightness is display backlight brightness.
For example, accepting upper example, it is assumed that display backlight brightness is 125, then according to calculation formula, by display backlight brightness
125, the change rate 1.1 of backlight illumination adjustment speed, minimum backlight brightness regulation speed 30 and minimum backlight brightness 10 substitute into meter
Formula Ramp_rate=Ramp_k* (Brightness-minBri)+minRate is calculated, obtaining display backlight brightness is 125
When, corresponding backlight illumination adjustment speed is 157.
It further, then can basis after determining the corresponding backlight illumination adjustment speed of current display backlight brightness
The speed that backlight illumination is adjusted determines the backlight brightness values for needing to adjust.In general, taking the frame per second of the screen-refresh of display screen
Refresh a secondary screen for 30fps, i.e., every 33ms, the update that the every 33ms of display screen carries out a backlight illumination can be regarded as here,
The period that the speed adjusted according to backlight illumination and display backlight brightness update, then when can determine one secondary screen of every refreshing
The adjusting step of display backlight brightness, i.e., the brightness value adjusted when carrying out backlight illumination adjusting every time, and then can be according to back
Brightness values determine the backlight illumination of display screen after backlight illumination adjusting.
For example, with reference to Fig. 5, the change rate of the backlight illumination adjustment speed of display screen is that 1.1, x indicates display in example as above
Shield backlight illumination, y indicates the adjustment speed of display backlight brightness to be asked, and the backlight illumination maximum value of display screen is 255, minimum
Value is 10, and the maximum value of backlight illumination adjustment speed is 300, minimum value 30, then calculation formula Ramp_rate=Ramp_k*
(Brightness-minBri)+minRate can then be expressed as y=1.1x+19.Assuming that the current backlight brightness of display screen
It (Current_Bri) is 110, target backlight luminance (Target Bri) is 65, then display can be calculated according to calculation formula
When to shield backlight illumination be 110, the corresponding adjustment speed of backlight illumination is 140, carries out the according to 140 backlight illumination adjustment speed
One time backlight illumination is adjusted, and is 5 by the backlight brightness values that this speed should be adjusted, after adjusting for the first time, the backlight illumination of display screen
It is 105；Continuing to be calculated from the formula corresponding backlight illumination adjustment speed when display backlight brightness is 105 is 135, i.e.,
The adjustment speed that secondary backlight illumination is adjusted is 135, and the backlight brightness values that should be adjusted are 5, after second is adjusted, the back of display screen
Brightness is 100；Continue to be calculated from the formula, the corresponding backlight illumination adjustment speed when display backlight brightness is 100
It is 129, i.e., the speed that third time backlight illumination is adjusted is 129, and the backlight brightness values that should be adjusted are 4.Third time backlight illumination tune
Backlight illumination after section is 96, is and so on calculated, until display backlight brightness is gradually adjusted to 65 by 110.
Herein it should be noted that the backlight for the ease of the processing module control and regulation display screen in display device is bright
Degree, the backlight brightness values being adjusted every time all round numbers.
So, when determining that the brightness of display screen local environment changes, being obtained current with environment by the above method
Then the target backlight luminance of brightness matching determines that this backlight illumination adjusts speed according to the current backlight illumination of display screen
Degree determines that backlight illumination adjusts corresponding adjustment speed next time, i.e., then according to display backlight brightness after this adjusting
Each adjustment speed is determined by the backlight result that closely last time is adjusted, and backlight illumination more adjusts faster, backlight illumination at high speed
More low adjustment speed is slower, so that the backlight illumination when speed adjusted every time is adjusted with this time matches, avoids existing skill
In art, the bright jump generated when being adjusted for different backlight illuminations using identical speed is born to caused by human eye
It carries on a shoulder pole, so promoting user's visual experience, so multiple adjusting is adjusted to target backlight luminance value up to display backlight brightness,
It avoids display backlight brightness that human eye is made to generate bright hopping sense because of the variation of local environment brightness, mitigates the burden of human eye,
Improve the visual experience of user.
Further, due in the present invention backlight illumination more top adjustment speed it is faster, avoid backlight illumination because of locating ring
The variation of border brightness and make human eye generate bright hopping sense, mitigation give human eye burden, meanwhile, also improve backlight adjusting speed
Degree, so, further the user experience is improved.
Based on the same inventive concept, a kind of display device is provided in the embodiment of the present invention, which shows
The specific implementation of the back light brightness regulating method of display screen can be found in the description of above method embodiment part, and it is no longer superfluous to repeat place
It states, which includes:
Module is obtained, for obtaining current with the environment when determining that the brightness of display screen local environment changes
The target backlight luminance of brightness matching；
Backlight illumination adjustment module is repeatedly adjusted for the backlight illumination to the display screen, until that described will show
The backlight illumination of display screen is adjusted to the target backlight luminance, wherein before the speed adjusted every time is adjusted by closely this time
Last backlight illumination adjusted result determines.
Optionally, the backlight illumination of the display screen the low, and the speed adjusted is slower, the backlight illumination of the display screen
More high, the speed adjusted is faster.
Optionally, the backlight illumination adjustment module, is also used to:
Appoint Primary regulation in the multiple adjusting, the last time before obtaining closely described Primary regulation is adjusted
Display backlight brightness later；
Obtain the backlight illumination adjustment speed change rate of the display screen；
According to the change rate and the display backlight brightness, the adjustment speed for appointing Primary regulation is determined；
And the backlight illumination of the display screen is adjusted according to determining adjustment speed.
Optionally, the backlight illumination adjustment module, is also used to:
According to determining adjustment speed, the adjusting step for appointing Primary regulation is obtained, the adjusting step refers to every time
The backlight brightness values of adjusting；
According to the adjusting step, the backlight illumination of the display screen is adjusted.
Optionally, the backlight illumination adjustment module, is also used to:
The maximum value and minimum value of the display backlight brightness regulation speed are obtained, and obtains the back of the display screen
Brightness maximum value and minimum value；
According to the maximum value of the adjustment speed and minimum value and backlight illumination maximum value and minimum value, it is bright to obtain backlight
Spend adjustment speed change rate.
Optionally, the backlight illumination adjustment module, is also used to:
Pass through calculating formula: Ramp_rate=Ramp_k* (Brightness-minBri)+minRate determines described any
The adjustment speed of secondary adjusting；
Wherein, Ramp_rate is backlight illumination adjustment speed, and Ramp_k is backlight illumination adjustment speed change rate,
Brightness is the current backlight brightness of display screen, and minBri is the adjustable minimum backlight brightness of the display screen,
MinRate is the minimal adjustment speed of the display backlight brightness.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
The shape for the computer program product implemented in usable storage medium (including but not limited to magnetic disk storage and optical memory etc.)
Formula.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of back light brightness regulating method of display screen characterized by comprising
When determining that the brightness of display screen local environment changes, obtain and the matched target backlight of the environment present intensity
Brightness；
The backlight illumination of the display screen is repeatedly adjusted, until the backlight illumination of the display screen is adjusted to the mesh
Mark backlight illumination, wherein the last backlight illumination adjusted result before the speed adjusted every time is adjusted by closely this time determines.
2. the method as described in claim 1, which is characterized in that the more low then adjustment speed of the backlight illumination of the display screen more
Slowly, the more high then adjustment speed of the backlight illumination of the display screen is faster.
3. method according to claim 1 or 2, which is characterized in that the method also includes:
Appoint Primary regulation in the multiple adjusting, after the last time before obtaining closely described Primary regulation is adjusted
Display backlight brightness；
Obtain the backlight illumination adjustment speed change rate of the display screen；
According to the change rate and the display backlight brightness, the adjustment speed for appointing Primary regulation is determined；
And the backlight illumination of the display screen is adjusted according to determining adjustment speed.
4. method as claimed in claim 3, which is characterized in that described to adjust the display screen according to determining adjustment speed
Backlight illumination specifically includes:
According to determining adjustment speed, the adjusting step for appointing Primary regulation is obtained, the adjusting step refers to each adjusting
Backlight brightness values；
According to the adjusting step, the backlight illumination of the display screen is adjusted.
5. method as claimed in claim 3, which is characterized in that the backlight illumination adjustment speed for obtaining the display screen becomes
Rate specifically includes:
Obtain the maximum value and minimum value of the display backlight brightness regulation speed, and obtain the display screen backlight it is bright
Spend maximum value and minimum value；
According to the maximum value of the adjustment speed and minimum value and backlight illumination maximum value and minimum value, backlight illumination tune is obtained
Save percentage speed variation.
6. method as claimed in claim 3, which is characterized in that described bright according to the change rate and the display backlight
Degree determines the adjustment speed for appointing Primary regulation, specifically:
Pass through calculating formula: Ramp_rate=Ramp_k* (Brightness-minBri)+minRate is determined described any time and is adjusted
The adjustment speed of section；
Wherein, Ramp_rate is backlight illumination adjustment speed, and Ramp_k is backlight illumination adjustment speed change rate,
Brightness is the current backlight brightness of display screen, and minBri is the adjustable minimum backlight brightness of the display screen,
MinRate is the minimal adjustment speed of the display backlight brightness.
7. a kind of display device characterized by comprising
Module is obtained, for obtaining and the environment present intensity when determining that the brightness of display screen local environment changes
Matched target backlight luminance；
Backlight illumination adjustment module is repeatedly adjusted for the backlight illumination to the display screen, until by the display screen
Backlight illumination be adjusted to the target backlight luminance, wherein the speed adjusted every time by closely this time adjust before upper one
Secondary backlight illumination adjusted result determines.
8. display device as claimed in claim 7, which is characterized in that the backlight illumination of the display screen the low, adjusts
Speed is slower, and the backlight illumination of the display screen the high, and the speed adjusted is faster.
9. display device as claimed in claim 7 or 8, which is characterized in that the backlight illumination adjustment module is also used to:
Appoint Primary regulation in the multiple adjusting, after the last time before obtaining closely described Primary regulation is adjusted
Display backlight brightness；
Obtain the backlight illumination adjustment speed change rate of the display screen；
According to the change rate and the display backlight brightness, the adjustment speed for appointing Primary regulation is determined；
And the backlight illumination of the display screen is adjusted according to determining adjustment speed.
10. display device as claimed in claim 9, which is characterized in that the backlight illumination adjustment module is also used to:
According to determining adjustment speed, the adjusting step for appointing Primary regulation is obtained, the adjusting step refers to each adjusting
Backlight brightness values；
According to the adjusting step, the backlight illumination of the display screen is adjusted.
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