CN110364122A - Backlight brightness values adjusting method, device, driving chip and display device - Google Patents
Backlight brightness values adjusting method, device, driving chip and display device Download PDFInfo
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- CN110364122A CN110364122A CN201910698652.XA CN201910698652A CN110364122A CN 110364122 A CN110364122 A CN 110364122A CN 201910698652 A CN201910698652 A CN 201910698652A CN 110364122 A CN110364122 A CN 110364122A
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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
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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
- G09G3/36—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 using liquid crystals
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
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- Crystallography & Structural Chemistry (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The embodiment of the present invention provides a kind of backlight brightness values adjusting method, device, driving chip and display device, designs field of display technology, backlight illumination regulative mode can be made more flexible.The backlight brightness values adjusting method includes: to obtain current backlight brightness value Pcur and target backlight luminance value Ptrgt by the period of frame；If Pcur and Ptrgt meet minimal adjustment condition, making Pnext=Ptrgt, Pnext is the backlight brightness values of next frame；If Pcur and Ptrgt meet non-minimum adjusting condition, then carry out a dynamic regulation, it is described to carry out a dynamic regulation including carrying out ratio gradual change adjusting, ratio gradual change of progress adjusting includes: to make Pnext=Pcur+R × (Ptrgt-Pcur), R is dynamic regulation ratio value, | Ptrgt-Pnext | < | Ptrgt-Pcur |, if Ptrgt acquired in present frame is identical as Ptrgt acquired in previous frame, then the R in this ratio gradual change adjusting is greater than the R in last ratio gradual change adjusting, or, R in this ratio gradual change adjusting is less than the R in last ratio gradual change adjusting.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of backlight brightness values adjusting method, device, driving chip and
Display device.
Background technique
In the course of work of liquid crystal display, in order to adapt to display picture, it may be necessary to backlight illumination is adjusted,
So that backlight illumination adapts to shown picture and is unable to satisfy backlight however, current back light brightness regulating method is more single
The needs of brightness regulation.
Summary of the invention
The embodiment of the present invention provides a kind of backlight brightness values adjusting method, device, driving chip and display device, can make
Backlight illumination regulative mode is more flexible.
On the one hand, the embodiment of the present invention provides a kind of backlight brightness values adjusting method, comprising:
Current backlight brightness value Pcur and target backlight luminance value Ptrgt is obtained by the period of frame；
If Pcur and Ptrgt meet minimal adjustment condition, making Pnext=Ptrgt, Pnext is that the backlight of next frame is bright
Angle value；
If Pcur and Ptrgt meet non-minimum adjusting condition, a dynamic regulation is carried out, it is described to carry out primary dynamic tune
Section includes carrying out a ratio gradual change to adjust, and ratio gradual change of progress adjusting includes:
Making Pnext=Pcur+R × (Ptrgt-Pcur), R is dynamic regulation ratio value, | Ptrgt-Pnext | < |
Ptrgt-Pcur |, if Ptrgt acquired in present frame is identical as Ptrgt acquired in previous frame, this ratio gradual change is adjusted
In R be greater than last ratio gradual change adjust in R, alternatively, this ratio gradual change adjust in R be less than last ratio gradual change
R in adjusting.
Optionally, R=R1 × (1+n × R2), wherein R1 and R2 be fixed value, 0 < | R1 | 1,0 < of < | R2 | < 1, n with
The unchanged frame number that continues of Ptrgt is positively correlated, n >=0.
Optionally, dynamic regulation of the progress includes:
If Pcur and Ptrgt meet first condition, carries out the primary ratio gradual change and adjust；
If Pcur and Ptrgt meet second condition, carries out a unique step and adjust；
The primary unique step of progress, which is adjusted, includes:
Pnext=Pcur+E, E is set to be fixed value, E ≠ 0, | Ptrgt-Pnext | < | Ptrgt-Pcur |.
Optionally, the first condition is | Ptrgt-Pcur | < M1, the second condition be | and Ptrgt-Pcur | >=M1,
M1 is fixed value.
Optionally, the minimal adjustment condition is | Ptrgt-Pcur | < M2, the non-minimum adjusting condition be | and Ptrgt-
Pcur | >=M2, M2 are fixed value.
Optionally, obtain current backlight brightness value Pcur's and target backlight luminance value Ptrgt by the period of frame described
Before process, further includes:
The corresponding display picture data of multiple display subregions is obtained by the period of frame；
The corresponding Ptrgt of each display subregion is obtained according to the display picture data；
It is described to obtain current backlight brightness value Pcur and target backlight luminance value Ptrgt by the period of frame specifically:
Each display subregion is respectively corresponded, obtains Pcur and Ptrgt by the period of frame；
If the Pcur and Ptrgt meet minimal adjustment condition, make the process of Pnext=Ptrgt are as follows:
Respectively corresponding each display subregion makes Pnext=if Pcur and Ptrgt meet minimal adjustment condition
Ptrgt；
If the Pcur and Ptrgt meet non-minimum adjusting condition, the process of a dynamic regulation is carried out are as follows:
Each display subregion is respectively corresponded once to be moved if Pcur and Ptrgt meet non-minimum adjusting condition
State is adjusted.
On the other hand, the embodiment of the present invention provides a kind of backlight illumination value adjusting device, comprising:
First acquisition unit, for obtaining current backlight brightness value Pcur and target backlight luminance value by the period of frame
Ptrgt；
First adjusting unit makes Pnext=Ptrgt, Pnext if meeting minimal adjustment condition for Pcur and Ptrgt
For the backlight brightness values of next frame；
Second adjusts unit, if meeting non-minimum adjusting condition for Pcur and Ptrgt, carries out a dynamic regulation,
Described to carry out a dynamic regulation including carrying out ratio gradual change adjusting, ratio gradual change of the progress, which is adjusted, includes:
Making Pnext=Pcur+R × (Ptrgt-Pcur), R is dynamic regulation ratio value, | Ptrgt-Pnext | < |
Ptrgt-Pcur |, if Ptrgt acquired in present frame is identical as Ptrgt acquired in previous frame, this ratio gradual change is adjusted
In R be greater than last ratio gradual change adjust in R, alternatively, this ratio gradual change adjust in R be less than last ratio gradual change
R in adjusting.
Optionally, R=R1 × (1+n × R2), wherein R1 and R2 be fixed value, 0 < | R1 | 1,0 < of < | R2 | < 1, n with
The unchanged frame number that continues of Ptrgt is positively correlated, n >=0.
Optionally, the second adjusting unit includes:
First adjustment module carries out the primary ratio gradual change tune if meeting first condition for Pcur and Ptrgt
Section；
Second adjustment module carries out the primary unique step and adjusts if meeting second condition for Pcur and Ptrgt；
The primary unique step of progress, which is adjusted, includes:
Pnext=Pcur+E, E is set to be fixed value, E ≠ 0, | Ptrgt-Pnext | < | Ptrgt-Pcur |.
Optionally, the first condition is | Ptrgt-Pcur | < M1, the second condition be | and Ptrgt-Pcur | >=M1,
M1 is fixed value.
Optionally, the minimal adjustment condition is | Ptrgt-Pcur | < M2, the non-minimum adjusting condition be | and Ptrgt-
Pcur | >=M2, M2 are fixed value.
Optionally, above-mentioned apparatus further include:
Second acquisition unit, for obtaining the corresponding display picture data of multiple display subregions by the period of frame；
Object brightness setting unit, it is corresponding for obtaining each display subregion according to the display picture data
Ptrgt；
The first adjusting unit is specifically used for, and respectively corresponds each display subregion, if Pcur and Ptrgt meets most
Minor adjustment condition, then make Pnext=Ptrgt；
It is described second adjusting unit is specifically used for, respectively correspond each display subregion, if Pcur and Ptrgt meet it is non-
Minimal adjustment condition then carries out a dynamic regulation.
On the other hand, the embodiment of the present invention also provides a kind of driving chip, comprising:
Processor and memory, the memory are added for storing at least one instruction, described instruction by the processor
Above-mentioned method is realized when carrying and executing.
On the other hand, the embodiment of the present invention also provides a kind of display device, comprising:
Liquid crystal display panel, backlight module and above-mentioned driving chip, the driving chip are electrically connected to the backlight mould
Group.
Backlight brightness values adjusting method, device, driving chip and display device in the embodiment of the present invention, including compared
Example gradual change is adjusted, and in ratio gradual change adjustment process, making Pnext=Pcur+R × (Ptrgt-Pcur), R is dynamic regulation ratio
Value, if Ptrgt acquired in present frame is identical as Ptrgt acquired in previous frame, the R in this ratio gradual change adjusting is greater than
R in last ratio gradual change adjusting, alternatively, the R in this ratio gradual change adjusting is less than in last ratio gradual change adjusting
R, by the way that the dynamic regulation ratio value R of increasing or decreasing is arranged, so that the mode that backlight illumination is adjusted is more flexible, to adapt to
The scene needed.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of flow diagram of backlight brightness values adjusting method in the embodiment of the present invention；
Fig. 2 is a kind of flow diagram of dynamic regulation of the embodiment of the present invention；
Fig. 3 is the flow diagram of another backlight brightness values adjusting method in the embodiment of the present invention；
Fig. 4 is the flow diagram of another backlight brightness values adjusting method in the embodiment of the present invention；
Fig. 5 is a kind of structural block diagram of backlight illumination value adjusting device in the embodiment of the present invention；
Fig. 6 is the structural block diagram of another backlight illumination value adjusting device in the embodiment of the present invention；
Fig. 7 is a kind of structural block diagram of driving chip in the embodiment of the present invention；
Fig. 8 is a kind of structural block diagram of display device in the embodiment of the present invention.
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 scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
The term used in embodiments of the present invention is only to be not intended to be limiting merely for for the purpose of describing particular embodiments
The present invention.In the embodiment of the present invention and the "an" of singular used in the attached claims, " described " and "the"
It is also intended to including most forms, unless the context clearly indicates other meaning.
As shown in FIG. 1, FIG. 1 is the flow diagram of backlight brightness values adjusting method a kind of in the embodiment of the present invention, this hairs
Bright embodiment provides a kind of backlight brightness values adjusting method, and this method is used for liquid crystal display device, this method comprises:
Step 101 obtains current backlight brightness value Pcur and target backlight luminance value Ptrgt by the period of frame；
Wherein, backlight brightness values are for reflecting backlight illumination, and backlight brightness values are bigger, then backlight illumination is bigger, and backlight is bright
Angle value is smaller, then backlight illumination is smaller, Ptrgt picture determination to be shown according to needed for next frame, i.e., and in next frame
The backlight brightness values that shown picture matches.
Step 102 judges whether Pcur and Ptrgt meets minimal adjustment condition, if so, even Pcur and Ptrgt meets
Minimal adjustment condition, then enter step 103, if it is not, even Pcur and Ptrgt meet non-minimum adjusting condition, then enters step
104；
Step 103 makes Pnext=Ptrgt, and Pnext is the backlight brightness values of next frame, subsequently into next frame；
Specifically, if Pcur and Ptrgt meet minimal adjustment condition, illustrate directly to show and show in next frame
The backlight brightness values that picture matches, even if target backlight luminance value Ptrgt is directly as the backlight illumination of next frame after adjusting
Value is exported；
Step 104 carries out a dynamic regulation, and carrying out a dynamic regulation includes carrying out a ratio gradual change to adjust, into
Ratio gradual change of row adjusting includes, after executing a ratio gradual change and adjusting, into next frame:
Making Pnext=Pcur+R × (Ptrgt-Pcur), R is dynamic regulation ratio value, | Ptrgt-Pnext | < |
Ptrgt-Pcur |, if Ptrgt acquired in present frame is identical as Ptrgt acquired in previous frame, this ratio gradual change is adjusted
In R be greater than last ratio gradual change adjust in R, alternatively, this ratio gradual change adjust in R be less than last ratio gradual change
R in adjusting.
Specifically, if Pcur and Ptrgt meet minimal adjustment condition, illustrate to need to carry out dynamic regulation, dynamic regulation
Including carrying out ratio gradual change adjusting, that is to say, make the backlight brightness values of the next frame after adjusting close to target according to a certain percentage
Brightness value, but and not up to target brightness value is adjusted with preventing backlight illumination mutation from causing the flashing of picture in ratio gradual change
In the process, if Ptrgt acquired in present frame is identical as Ptrgt acquired in previous frame, illustrate that Ptrgt does not change,
If previous frame has also carried out ratio gradual change adjusting, the R in this ratio gradual change adjustment process understands increasing or decreasing, with reality
Brightness regulation is now carried out by more flexible mode.If Ptrgt acquired in Ptrgt acquired in present frame and previous frame is not
Together, then it is just to set preset value that R, which is arranged,.| | it is absolute value, | Ptrgt-Pnext | < | Ptrgt-Pcur | indicate the back after adjusting
Brightness values are more nearly target backlight luminance value relative to current backlight brightness values.
For example, in A frame, backlight brightness values Pcur=50, accessed target backlight luminance value Ptrgt=100,
It needs backlight brightness values being adjusted to 100 from 50, at this point, meeting non-minimum adjusting condition by step 102 judgement, into step
Rapid 104, carry out ratio gradual change adjusting, it is assumed that in A-1 frame, target backlight luminance value Ptrgt ≠ 100, i.e. this backlight illumination
It is the adjusting for the first time carried out for new picture that value, which is adjusted, then initial using fixed initial dynamic regulation ratio value R, such as setting
R=20% makes Pnext=50+20% × (100-50)=60；In A+1 frame, adjusted by last backlight illumination,
Pcur=60, display picture is constant, i.e., target backlight luminance is worth constant, Ptrgt=100, meets non-minimum adjusting condition, carries out
Ratio gradual change is adjusted, and dynamic regulation ratio value R for example increases to 30%, Pnext=60+30% × (100-60)=72；In A
+ 2 frames, Pcur=72, Ptrgt=100 meet non-minimum adjusting condition by step 102 judgement, enter step 104, compared
Example gradual change is adjusted, and dynamic regulation ratio value R for example increases to 40%, Pnext=72+40% × (100-72)=83.2；In A
+ 3 frames, Pcur=83.2, Ptrgt=100 meet minimal adjustment condition by step 102 judgement, enter step 103, make
Pnext=100；In A+4 frame, Pcur=100, Ptrgt=100, current backlight brightness value Pcur is equal to target backlight luminance
Value Ptrgt, without carrying out backlight illumination adjusting；In A+5 frame, Pcur=100, picture changes, target backlight luminance value with
Variation, Ptrgt=30 meet non-minimum adjusting condition by step 102 judgement, enter step 104, carry out ratio gradual change tune
Section, using fixed initial dynamic regulation ratio value R=20%, makes since target backlight luminance value is changed
Pnext=100+20% × (30-100)=86；In A+6 frame, Pcur=86, Ptrgt=30 meet non-minimum adjustment bar
Part, carry out ratio gradual change adjusting, dynamic regulation ratio value R for example increase to 30%, Pnext=86+30% × (86-30)=
69.2, and so on, during entire picture refreshing, backlight illumination is adjusted.Wherein, use ratio gradual change is adjusted
The reason of be on the one hand, so that backlight illumination is gradually adjusted to object brightness, thus avoid backlight illumination mutation influence viewing picture
Experience；It on the other hand,, can be to avoid relative to the regulative mode of fixed proportion when dynamic regulation ratio value R is incremented by setting
Brightness regulation amplitude reduction, thus under required scene, such as under the scene that the pictures such as video playing are switched fast, make
Backlight illumination can quickly be adjusted to target value, the tune when dynamic regulation ratio value R, which successively decreases, to be arranged, relative to fixed proportion
Section mode can be such that the backlight illumination amplitude of accommodation reduces with the increase for adjusting number, so that scene required for adapting to, makes
Backlight illumination can be adjusted to target value in a manner of gradually slowing down.
Backlight brightness values adjusting method in the embodiment of the present invention, including ratio gradual change adjusting is carried out, in ratio gradual change tune
During section, make Pnext=Pcur+R × (Ptrgt-Pcur), R is dynamic regulation ratio value, if acquired in present frame
Ptrgt is identical as Ptrgt acquired in previous frame, then the R in this ratio gradual change adjusting is greater than last ratio gradual change and adjusts
In R, alternatively, this ratio gradual change adjust in R be less than last ratio gradual change adjust in R, be incremented by or pass by being arranged
The dynamic regulation ratio value R subtracted, so that the mode that backlight illumination is adjusted is more flexible, to adapt to required scene.
Optionally, R=R1 × (1+n × R2), wherein R1 and R2 be fixed value, 0 < | R1 | 1,0 < of < | R2 | < 1, n with
The unchanged frame number that continues of Ptrgt is positively correlated, n >=0.
It specifically, is the tune for the first time carried out for new picture when carrying out ratio gradual change adjusting for example, it is assumed that in B frame
It saves, i.e., target backlight luminance value Ptrgt is different from previous frame, and the unchanged frame number that continues of Ptrgt is 0, then using the first of fixation
Beginning dynamic regulation ratio value R, such as setting n=0, i.e. R=R1；In B+1 frame, target backlight luminance value is constant, second into
Row ratio gradual change adjust when, Ptrgt it is unchanged continue frame number be 1, n=1, dynamic regulation ratio value R increase to R=R1 ×
R2；In B+2 frame, target backlight luminance value is constant, and when third time carries out ratio gradual change adjusting, Ptrgt is unchanged to continue frame
Number is 2, n=2, and dynamic regulation ratio value R increases to R=R1 × 2 × R2, and so on, with being carried out continuously ratio gradual change tune
The number of section gradually increases, and n is gradually increased, i.e. n and the unchanged frame number that continues of Ptrgt are positively correlated.
Optionally, as shown in Fig. 2, Fig. 2 is a kind of flow diagram of dynamic regulation of the embodiment of the present invention, above-mentioned steps
104, carrying out a dynamic regulation includes:
Step 1041 judges whether Pcur and Ptrgt meets first condition, if so, even Pcur and Ptrgt meets first
Condition then enters step 1042, if it is not, even Pcur and Ptrgt meet second condition, then enters step 1043；
Step 1042 carries out ratio gradual change adjusting；
Step 1043 carries out a unique step adjusting；
Carrying out a unique step adjusting includes:
Pnext=Pcur+E, E is set to be fixed value, E ≠ 0, | Ptrgt-Pnext | < | Ptrgt-Pcur |.
Specifically, the process of ratio gradual change adjusting is carried out in step 1042 in the above-described embodiments it is stated that herein not
It repeats again, carries out a unique step to adjust being every time to adjust backlight brightness values according to identical amplitude in step 1043
Section makes the backlight brightness values (i.e. the backlight brightness values of next frame) after adjusting be more nearly target relative to current backlight brightness value
Backlight brightness values when carrying out unique step adjusting every time, make Pnext=Pcur+ for example, E=10 is arranged if Ptrgt > Pcur
10.During carrying out dynamic regulation, according to judgement selection carry out ratio gradual change adjusting or unique step adjusting is carried out, so that
Adjustment process is more flexible.
Optionally, first condition is | Ptrgt-Pcur | < M1, second condition be | and Ptrgt-Pcur | >=M1, M1 is fix
Value.
Specifically, first condition is for judging in Dynamic Regulating Process, is carry out ratio gradual change adjusting or carries out etc.
Step-length is adjusted, and M1 specifically can carry out assignment by driving chip, can according to need and preset, for example, M1=50, that is, work as mesh
When mark backlight brightness values and the larger difference of current backlight brightness value, when being greater than 50, unique step adjusting is carried out, with biggish width
Degree carries out backlight brightness values adjusting, when the difference for being adjusted to target backlight luminance value and current backlight brightness value is smaller, for example (,) it is small
When 50, ratio gradual change adjusting is carried out.
Optionally, minimal adjustment condition is | Ptrgt-Pcur | < M2, non-minimum adjusting condition be | and Ptrgt-Pcur | >=
M2, M2 are fixed value.
Specifically, for minimal adjustment condition for judging in this backlight brightness values adjustment process, selection directly will be next
Frame backlight brightness values are adjusted to target backlight luminance value, or selection carries out dynamic regulation, for example, if target backlight luminance value and
When the difference of current backlight brightness value is less than preset value, enter step 103, if target backlight luminance value and current backlight brightness value it
When difference is greater than or equal to preset value, entering step 104, M2 specifically can carry out assignment by driving chip, can according to need pre-
First it is arranged, the value of usual M2 is smaller, for example, M2 is less than the smallest amplitude of accommodation in each backlight brightness values adjustment process, for example,
M1=20 is set, and in above-mentioned A+3 frame, Ptrgt=100, Pcur=83.2 judge Ptrgt-Pcur=in a step 102
16.8 < 20, then enter step 103, make Pnext=100.It is to be appreciated that may be used also in other enforceable embodiments
With by minimal adjustment condition setting be other logics, for example, minimal adjustment condition be target backlight luminance value Ptrgt continue it is unchanged
The time of change, for example, Ptrgt does not change in continuous 5 frame, but Pcur is still to be adjusted to target backlight luminance value
Ptrgt is then directly entered step 103.
Optionally, as shown in figure 3, the process that Fig. 3 is another backlight brightness values adjusting method in the embodiment of the present invention is shown
It is intended to, in above-mentioned steps 101, using frame as the mistake of period acquisition current backlight brightness value Pcur and target backlight luminance value Ptrgt
Before journey, further includes:
Step 1001 obtains the corresponding display picture data of multiple display subregions by the period of frame, subsequently into step
1002；
Step 1002 obtains the corresponding Ptrgt of each display subregion according to display picture data, subsequently into step 101；
Step 101 obtains current backlight brightness value Pcur and target backlight luminance value Ptrgt by the period of frame specifically:
Each display subregion is respectively corresponded, obtains Pcur and Ptrgt by the period of frame；
If above-mentioned Pcur and Ptrgt meet minimal adjustment condition, make the process of Pnext=Ptrgt are as follows: respectively correspond every
A display subregion makes Pnext=Ptrgt if Pcur and Ptrgt meet minimal adjustment condition；If above-mentioned Pcur and Ptrgt is full
The non-minimum adjusting condition of foot, then carry out the process of a dynamic regulation are as follows: respectively correspond each display subregion, if Pcur and
Ptrgt meets non-minimum adjusting condition, then carries out a dynamic regulation.Each display area is respectively corresponded, above-mentioned step is executed
Rapid 102, the process of step 103 and step 104.
As shown in figure 4, Fig. 4 is the flow diagram of another backlight brightness values adjusting method in the embodiment of the present invention, with
The embodiment of the present invention is illustrated under a concrete scene for process shown in Fig. 4, it should be noted that illustrated in Figure 4
Backlight brightness values adjusting method be some corresponding display area method, this method comprises:
201 are entered step in every frame, step 201 obtains display picture data, subsequently into step 202；
Step 202 obtains Ptrgt according to display picture data, subsequently into step 203；
Step 203 obtains Pcur and Ptrgt, subsequently into step 204；
Step 204 judges whether to meet | Ptrgt-Pcur | < M2, it is assumed that and M2=20, if so, 205 are entered step, if
It is no, then enter step 206；
Step 205 makes Pnext=Ptrgt, subsequently into step 207；
Step 206 judges whether to meet | Ptrgt-Pcur | < M1, it is assumed that and M1=50, if so, 208 are entered step, if
It is no, then enter step 209；
Step 208 makes Pnext=Pcur+R1 × (1+n × R2) × (Ptrgt-Pcur), subsequently into step 207；
Step 209 makes Pnext=Pcur+E, it is assumed that E=30, subsequently into step 207；
Step 207, into next frame.
For example, Pcur=50, Ptrgt=150, in step 204, Ptrgt-Pcur=100 > 20 enters in C frame
Step 206, Ptrgt-Pcur=100 > 50, enters step 209, makes Pnext=Pcur+E=50+30=80, into C+1
Frame；In C+1 frame, Pcur=80, Ptrgt=150, in step 204, Ptrgt-Pcur=70 > 20 enter step 206,
Ptrgt-Pcur=70 > 50, enters step 209, makes Pnext=Pcur+E=80+30=110, into C+2 frame；In C+
2 frames, Pcur=110, Ptrgt=150, in step 204, Ptrgt-Pcur=40 > 20 enters step 206, Ptrgt-
Pcur=40 < 50, enters step 208, it is assumed that R1=20%, R2=50%, n=0, makes Pnext=Pcur+R1 × (1+ at this time
N × R2) × (Ptrgt-Pcur)=110+20% × 40=122, into C+3 frame；In C+4 frame, Pcur=122, Ptrgt
=150, in step 204, Ptrgt-Pcur=28 > 20 enters step 206, Ptrgt-Pcur=28 < 50, enters step
208, n=1 at this time, make Pnext=Pcur+R1 × (1+n × R2) × (Ptrgt-Pcur)=122+20% × (1+50%) ×
28=130.4, into C+4 frame；In C+4 frame, Pcur=130.4, Ptrgt=150, in step 204, Ptrgt-Pcur
=19.6 < 20, enter step 205, make Pnext=Ptrgt=150, into C+5 frame, and so on, realize backlight illumination
The adjusting of value.As it can be seen that during backlight brightness values are adjusted, when the difference between backlight brightness values and target brightness value is larger
When, it is preferentially adjusted using unique step, the amplitude of accommodation of backlight brightness values is larger, so that backlight brightness values are as early as possible close to object brightness
Value, then uses dynamic regulation, and the amplitude of accommodation is smaller and difference between backlight brightness values and target brightness value and adjusts secondary
Number is related, so that the process of brightness regulation is more flexible.
As shown in figure 5, Fig. 5 is a kind of structural block diagram of backlight illumination value adjusting device in the embodiment of the present invention, the present invention
Embodiment also provides a kind of backlight illumination value adjusting device, comprising: first acquisition unit 1, it is current for being obtained using frame as the period
Backlight brightness values Pcur and target backlight luminance value Ptrgt；First adjusts unit 2, if meeting most ditty for Pcur and Ptrgt
Section condition, then making Pnext=Ptrgt, Pnext is the backlight brightness values of next frame；Second adjusts unit 3, if for Pcur and
Ptrgt meets non-minimum adjusting condition, then carries out a dynamic regulation, and carrying out a dynamic regulation includes carrying out a ratio gradually
Modified tone section, carrying out ratio gradual change adjusting includes: to make Pnext=Pcur+R × (Ptrgt-Pcur), and R is dynamic regulation ratio
Value, | Ptrgt-Pnext | < | Ptrgt-Pcur |, if Ptrgt acquired in present frame and Ptrgt phase acquired in previous frame
Together, then the R in this ratio gradual change adjusting is greater than the R in last ratio gradual change adjusting, alternatively, in this ratio gradual change adjusting
R be less than last ratio gradual change adjust in R.
Specifically, which can specifically apply above-mentioned backlight brightness values adjusting method, tool
Body principle and the course of work are identical as the description of above-described embodiment, and details are not described herein.
Backlight illumination value adjusting device in the embodiment of the present invention, including ratio gradual change adjusting is carried out, in ratio gradual change tune
During section, make Pnext=Pcur+R × (Ptrgt-Pcur), R is dynamic regulation ratio value, if acquired in present frame
Ptrgt is identical as Ptrgt acquired in previous frame, then the R in this ratio gradual change adjusting is greater than last ratio gradual change and adjusts
In R, alternatively, this ratio gradual change adjust in R be less than last ratio gradual change adjust in R, be incremented by or pass by being arranged
The dynamic regulation ratio value R subtracted, so that the mode that backlight illumination is adjusted is more flexible, to adapt to required scene.
Optionally, R=R1 × (1+n × R2), wherein R1 and R2 be fixed value, 0 < | R1 | 1,0 < of < | R2 | < 1, n with
The unchanged frame number that continues of Ptrgt is positively correlated, n >=0.
Optionally, as shown in fig. 6, Fig. 6 is the structural frames of another backlight illumination value adjusting device in the embodiment of the present invention
Figure, the second adjusting unit 3 includes: the first adjustment module 31, if meeting first condition for Pcur and Ptrgt, is carried out primary
Ratio gradual change is adjusted；Second adjustment module 32 carries out a unique step tune if meeting second condition for Pcur and Ptrgt
Section；Carrying out the adjusting of unique step includes: to make Pnext=Pcur+E, and E is fixed value, E ≠ 0, | Ptrgt-Pnext | < |
Ptrgt-Pcur|。
Optionally, first condition is | Ptrgt-Pcur | < M1, second condition be | and Ptrgt-Pcur | >=M1, M1 is fix
Value.
Optionally, minimal adjustment condition is | Ptrgt-Pcur | < M2, non-minimum adjusting condition be | and Ptrgt-Pcur | >=
M2, M2 are fixed value.
It optionally, is above-mentioned apparatus further include: second acquisition unit 4, for obtaining multiple display subregions by the period of frame
Corresponding display picture data；Object brightness setting unit 5, it is corresponding for obtaining each display subregion according to display picture data
Ptrgt；First adjusting unit 2 is specifically used for, and each display subregion is respectively corresponded, if Pcur and Ptrgt meet minimal adjustment
Condition then makes Pnext=Ptrgt；Second adjusting unit 3 is specifically used for, respectively correspond each display subregion, if Pcur and
Ptrgt meets non-minimum adjusting condition, then carries out a dynamic regulation.
On the other hand, the embodiment of the present invention also provides a kind of driving chip, as shown in fig. 7, Fig. 7 is in the embodiment of the present invention
A kind of structural block diagram of driving chip, the driving chip include: processor 610 and memory 620, and memory 620 is for storing
At least one instruction, to realize the method in above-described embodiment when instruction is loaded and executed by processor 610, the above method is no longer
It repeats.The quantity of processor 610 can be to be one or more, in Fig. 7 by taking a processor 610 as an example, processor 610 and storage
Device 620 can be connected by bus or other modes, in Fig. 7 for being connected by bus.
Memory 620 is used as a kind of non-transient computer readable storage medium, can be used for storing non-transient software program, non-
Transient computer executable program and module, such as the corresponding program instruction/module of the transmission method in the embodiment of the present application.Place
Non-transient software program, instruction and the module that reason device 610 is stored in memory 620 by operation, thereby executing various function
It can apply and data processing, that is, realize the method in above-mentioned any means embodiment.
Memory 620 may include storing program area and storage data area, wherein storing program area can store operation system
Application program required for system, at least one function；And necessary data etc..In addition, memory 620 may include that high speed is random
Memory is accessed, can also include non-transient memory, a for example, at least disk memory, flush memory device or other are non-
Transient state solid-state memory.
On the other hand, the embodiment of the present invention also provides a kind of display device, as shown in figure 8, Fig. 8 is in the embodiment of the present invention
A kind of structural block diagram of display device, the display device include: liquid crystal display panel 10, backlight module 11 and above-mentioned driving core
Piece 12, driving chip 12 are electrically connected to backlight module 11 and liquid crystal display panel 10, and driving chip 12 is for controlling backlight module
11 backlight and driving liquid crystal display panel 10 shows picture.The backlight that backlight module 11 is generated in response to driving chip 12 is bright
Angle value generates corresponding backlight illumination, and backlight brightness values are bigger, then backlight illumination is bigger, and the driving method of driving chip 12 is no longer
It repeats.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (14)
1. a kind of backlight brightness values adjusting method characterized by comprising
Current backlight brightness value Pcur and target backlight luminance value Ptrgt is obtained by the period of frame；
If Pcur and Ptrgt meet minimal adjustment condition, making Pnext=Ptrgt, Pnext is the backlight brightness values of next frame；
If Pcur and Ptrgt meet non-minimum adjusting condition, a dynamic regulation, dynamic regulation packet of the progress are carried out
It includes and carries out ratio gradual change adjusting, ratio gradual change of progress adjusting includes:
Making Pnext=Pcur+R × (Ptrgt-Pcur), R is dynamic regulation ratio value, | Ptrgt-Pnext | < | Ptrgt-
Pcur |, the R if Ptrgt acquired in present frame is identical as Ptrgt acquired in previous frame, in this ratio gradual change adjusting
Greater than the R in last ratio gradual change adjusting, adjusted alternatively, the R in this ratio gradual change adjusting is less than last ratio gradual change
In R.
2. backlight brightness values adjusting method according to claim 1, which is characterized in that
R=R1 × (1+n × R2), wherein R1 and R2 be fixed value, 0 < | R1 | 1,0 < of < | R2 | < 1, n do not change with Ptrgt
Lasting frame number be positively correlated, n >=0.
3. backlight brightness values adjusting method according to claim 1, which is characterized in that
Dynamic regulation of the progress includes:
If Pcur and Ptrgt meet first condition, carries out the primary ratio gradual change and adjust；
If Pcur and Ptrgt meet second condition, carries out a unique step and adjust；
The primary unique step of progress, which is adjusted, includes:
Pnext=Pcur+E, E is set to be fixed value, E ≠ 0, | Ptrgt-Pnext | < | Ptrgt-Pcur |.
4. backlight brightness values adjusting method according to claim 3, which is characterized in that
The first condition is | Ptrgt-Pcur | < M1, the second condition be | and Ptrgt-Pcur | >=M1, M1 are fixed value.
5. backlight brightness values adjusting method according to claim 1, which is characterized in that
The minimal adjustment condition is | Ptrgt-Pcur | < M2, the non-minimum adjusting condition be | and Ptrgt-Pcur | >=M2,
M2 is fixed value.
6. backlight brightness values adjusting method according to claim 1, which is characterized in that
Before the process for obtaining current backlight brightness value Pcur and target backlight luminance value Ptrgt using frame as the period, also
Include:
The corresponding display picture data of multiple display subregions is obtained by the period of frame；
The corresponding Ptrgt of each display subregion is obtained according to the display picture data；
It is described to obtain current backlight brightness value Pcur and target backlight luminance value Ptrgt by the period of frame specifically:
Each display subregion is respectively corresponded, obtains Pcur and Ptrgt by the period of frame；
If the Pcur and Ptrgt meet minimal adjustment condition, make the process of Pnext=Ptrgt are as follows:
Respectively corresponding each display subregion makes Pnext=Ptrgt if Pcur and Ptrgt meet minimal adjustment condition；
If the Pcur and Ptrgt meet non-minimum adjusting condition, the process of a dynamic regulation is carried out are as follows:
Each display subregion is respectively corresponded, if Pcur and Ptrgt meet non-minimum adjusting condition, primary dynamic is carried out and adjusts
Section.
7. a kind of backlight illumination value adjusting device characterized by comprising
First acquisition unit, for obtaining current backlight brightness value Pcur and target backlight luminance value Ptrgt by the period of frame；
First adjusts unit, if meeting minimal adjustment condition for Pcur and Ptrgt, makes under Pnext=Ptrgt, Pnext be
The backlight brightness values of one frame；
Second adjusts unit, if meeting non-minimum adjusting condition for Pcur and Ptrgt, carries out a dynamic regulation, described
Carrying out a dynamic regulation includes carrying out a ratio gradual change to adjust, and ratio gradual change of progress adjusting includes:
Making Pnext=Pcur+R × (Ptrgt-Pcur), R is dynamic regulation ratio value, | Ptrgt-Pnext | < | Ptrgt-
Pcur |, the R if Ptrgt acquired in present frame is identical as Ptrgt acquired in previous frame, in this ratio gradual change adjusting
Greater than the R in last ratio gradual change adjusting, adjusted alternatively, the R in this ratio gradual change adjusting is less than last ratio gradual change
In R.
8. device according to claim 7, which is characterized in that
R=R1 × (1+n × R2), wherein R1 and R2 be fixed value, 0 < | R1 | 1,0 < of < | R2 | < 1, n do not change with Ptrgt
Lasting frame number be positively correlated, n >=0.
9. device according to claim 7, which is characterized in that
Described second, which adjusts unit, includes:
First adjustment module carries out the primary ratio gradual change and adjusts if meeting first condition for Pcur and Ptrgt；
Second adjustment module carries out the primary unique step and adjusts if meeting second condition for Pcur and Ptrgt；
The primary unique step of progress, which is adjusted, includes:
Pnext=Pcur+E, E is set to be fixed value, E ≠ 0, | Ptrgt-Pnext | < | Ptrgt-Pcur |.
10. device according to claim 9, which is characterized in that
The first condition is | Ptrgt-Pcur | < M1, the second condition be | and Ptrgt-Pcur | >=M1, M1 are fixed value.
11. device according to claim 7, which is characterized in that
The minimal adjustment condition is | Ptrgt-Pcur | < M2, the non-minimum adjusting condition be | and Ptrgt-Pcur | >=M2,
M2 is fixed value.
12. the apparatus according to claim 1, which is characterized in that further include:
Second acquisition unit, for obtaining the corresponding display picture data of multiple display subregions by the period of frame；
Object brightness setting unit, for obtaining the corresponding Ptrgt of each display subregion according to the display picture data；
The first adjusting unit is specifically used for, and respectively corresponds each display subregion, if Pcur and Ptrgt meets most ditty
Section condition, then make Pnext=Ptrgt；
It is described second adjusting unit is specifically used for, respectively correspond each display subregion, if Pcur and Ptrgt meet it is non-minimum
Adjusting condition then carries out a dynamic regulation.
13. a kind of driving chip characterized by comprising
Processor and memory, the memory are loaded simultaneously for storing at least one instruction, described instruction by the processor
To realize the method as described in any one of claim 1 to 6 when execution.
14. a kind of display device characterized by comprising
Liquid crystal display panel, backlight module and driving chip as claimed in claim 13, the driving chip are electrically connected to institute
State backlight module.
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