CN105869579A - Backlight brightness adjusting method and device and display terminal - Google Patents
Backlight brightness adjusting method and device and display terminal Download PDFInfo
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- CN105869579A CN105869579A CN201610194659.4A CN201610194659A CN105869579A CN 105869579 A CN105869579 A CN 105869579A CN 201610194659 A CN201610194659 A CN 201610194659A CN 105869579 A CN105869579 A CN 105869579A
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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
- G09G3/3406—Control of illumination source
- G09G3/3413—Details of control of colour illumination sources
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
- G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
Abstract
The embodiment of the invention provides a backlight brightness adjusting method and device and a display terminal. The method comprises the steps that display area of a target image and a first backlight value of each backlight partition corresponding to the target image are determined according to an input image signal; a corresponding light diffusion model is acquired from all the preset light diffusion models according to the display area; a second backlight value of each backlight partition is determined according to the light diffusion model and all the first backlight values; and the brightness of all the backlight partitions is adjusted according to the second backlight values of all the backlight partitions. According to the backlight brightness adjusting method and device and the display terminal, the image display effect can be enhanced and the user's viewing experience can be enhanced.
Description
Technical field
The present embodiments relate to image display technology field, particularly relate to a kind of backlight brightness regulation method, device and
Display terminal.
Background technology
Liquid crystal display is generally made up of liquid crystal panel and back light unit, back light unit send the optical transport of constant homogeneous to
Liquid crystal panel, liquid crystal panel shows different images by adjustment pixel transmittance rate again.
Image shown by liquid crystal panel has light and shade change, if back light unit is luminous according to equivalent brightness all the time
If, can be because the light leakage phenomena of liquid crystal panel causes saturation and the problem of contrast reduction of picture.For this problem,
Screen-picture, by using dynamic backlight to control technology, is divided into different subregion by prior art, according to different subregion input pictures
Light and shadow characteristics the brightness of back light unit in different subregions is adjusted, thus improve the dynamic contrast of picture and color is satisfied
And degree.
Dynamic backlight controls technology and uses fixing light diffusion model in the prior art, the most no matter picture display face
Long-pending size, all uses a general light diffusion model to be adjusted the brightness of image back light subregion.Fig. 1 is in prior art
The backlight subarea schematic diagram of image, as it is shown in figure 1, Fig. 1 uses the light diffusion model of 3*3, when showing the bright figure of little area
During picture (image A), backlight subarea opens 9, and when showing large area bright image (image B), the backlight subarea of unlatching
Being 25, therefore, image A is extended influence by the light of 9 backlight subarea, and image B is then spread shadow by the light of 25 backlight subarea
Ring.Even if each backlight subarea brightness at image A and image B is identical, and image A is the most identical with the average gray value of image B
In the case of, owing to the illumination diffusion between backlight subarea can make the intrinsic brilliance intrinsic brilliance higher than image A of image B, actual
In situation the brightness of image A also can brightness than image B much lower, this display effect having had a strong impact on image and the sight of user
See experience.
Summary of the invention
The embodiment of the present invention provides a kind of backlight brightness regulation method, device and display terminal, in order to solve prior art
Middle picture display face amasss the problem affecting image display brightness, improves display effect and user's viewing experience of image.
Embodiment of the present invention first aspect provides a kind of backlight brightness regulation method, and the method includes:
According to received image signal, determine each backlight subarea that the display area of target image is corresponding with described target image
The first backlight value；
According to described display area, concentrate from default light diffusion model and obtain corresponding light diffusion model；
According to described smooth diffusion model and each first backlight value, determine the second backlight value of each described backlight subarea, wherein,
Described second backlight value is for adjusting the brightness of corresponding described backlight subarea.
Embodiment of the present invention second aspect provides a kind of backlight illumination adjusting apparatus, and this device includes:
First determines module, for according to received image signal, determines the display area of target image and described target figure
The first backlight value as corresponding each backlight subarea；
Acquisition module, for according to described display area, concentrating from default light diffusion model and obtain corresponding light diffusion
Model；
Second determines module, for according to described smooth diffusion model and each first backlight value, determines each described backlight subarea
The second backlight value, wherein, described second backlight value is for adjusting the brightness of corresponding described backlight subarea.
A kind of backlight illumination adjusting apparatus of embodiment of the present invention third aspect offer, this device, including:
Processor；
For storing the memorizer of the executable instruction of described processor；
Wherein, described processor is configured to:
According to received image signal, determine each backlight subarea that the display area of target image is corresponding with described target image
The first backlight value；
According to described display area, concentrate from default light diffusion model and obtain corresponding light diffusion model；
According to described smooth diffusion model and each first backlight value, determine the second backlight value of each described backlight subarea, wherein,
Described second backlight value is for adjusting the brightness of corresponding described backlight subarea.
A kind of display terminal of embodiment of the present invention fourth aspect offer, this display terminal, including:
Backlight assembly, liquid crystal panel and the backlight illumination adjusting apparatus as described in any one of claim 8-15；
Wherein, described backlight assembly, for providing light source, described backlight illumination adjusting apparatus and institute for described liquid crystal panel
State backlight assembly to be electrically connected with.
The embodiment of the present invention, by judging the size of target image display area, obtains and adapts with target image area
Light diffusion model, and by the light diffusion model that gets, the brightness of each backlight subarea of target image is adjusted, makes
Must be when showing little area bright image, the brightness that will not cause image because the area of image is too small is too low, or, aobvious
When showing large area bright image, the display brightness that will not cause image because the area of image is excessive is too high, thus improves
The display effect of image, enhances the viewing experience of user.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, also may be used
To obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the backlight subarea schematic diagram of image in prior art；
The schematic flow sheet of the backlight brightness regulation method that Fig. 2 a provides for the embodiment of the present invention one；
Fig. 2 b is the schematic flow sheet of the backlight brightness regulation method of the another offer of the embodiment of the present invention；
Fig. 3 is the backlight subarea schematic diagram of the little area bright image obtained according to the embodiment of the present invention one；
Fig. 4 is the execution method schematic diagram of step S104 in embodiment illustrated in fig. 2；
Fig. 5 is the method flow schematic diagram determining light diffusion model in the embodiment of the present invention two；
Fig. 6 is the method flow schematic diagram determining light diffusion model in the embodiment of the present invention three；
Fig. 7 is the method flow schematic diagram determining light diffusion model in the embodiment of the present invention four；
The structural representation of a kind of backlight illumination adjusting apparatus that Fig. 8 a provides for the embodiment of the present invention five；
The structural representation of another backlight illumination adjusting apparatus that Fig. 8 b provides for the embodiment of the present invention five；
The structural representation of a kind of backlight illumination adjusting apparatus that Fig. 9 provides for the embodiment of the present invention six；
The structural representation of a kind of backlight illumination adjusting apparatus that Figure 10 provides for the embodiment of the present invention seven；
The structural representation of a kind of backlight illumination adjusting apparatus that Figure 11 provides for the embodiment of the present invention eight；
The structural representation of a kind of backlight illumination adjusting apparatus that Figure 12 provides for the embodiment of the present invention nine；
Figure 13 provides a kind of display terminal for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
The term of description and claims of this specification " includes " and " having " and their any deformation, it is intended that
Being to cover non-exclusive comprising, such as, the device of the process or structure that contain series of steps is not necessarily limited to clearly arrange
That those structures gone out or step but can include the most clearly is listed or for intrinsic other step of these processes or device
Rapid or structure.
The schematic flow sheet of the backlight brightness regulation method that Fig. 2 a provides for the embodiment of the present invention one, wherein, it is illustrated that method
Executive agent can be to be arranged in liquid crystal display (such as LCD TV, liquid crystal display or panel computer etc.)
Backlight illumination adjusting apparatus perform, this device can be realized by software and/or hardware.As shown in Figure 2 a, the present embodiment
The method provided comprises the steps:
Step S101, according to received image signal, determine that the display area of target image is corresponding with described target image
First backlight value of each backlight subarea.
In the present embodiment, received image signal can be such as the input of the liquid crystal display such as LCD TV, liquid crystal display
Picture signal, this received image signal includes the view data of rgb format.Target image is the highlighted envelope comprised in input picture
Closed region image, example, such as image A and image B in Fig. 1, a frame input picture can comprise multiple.Target image can be
Being determined according to default selection strategy, this selection strategy can be those skilled in the art's sets itself as required
's.Display area is the gross area of all backlight subarea that target image is corresponding, or the boundary pixel of this target image determines
Display area.
After obtaining received image signal, backlight illumination adjusting apparatus is according to received image signal, for each to be shown
Several virtual partitions of image division, the corresponding backlight subarea of the most each virtual partition.Face due to each backlight subarea
Amass and be set, therefore, by virtual partition corresponding with target image for the area of single backlight subarea when dividing backlight subarea
Number (i.e. the number of the backlight subarea that target image is corresponding) do product calculation, the display area of target image can be obtained.
Further, the obtaining of backlight value (i.e. first backlight value) of each backlight subarea that input picture is corresponding in the present embodiment
Take algorithm similarly to the prior art, for example, after the received image signal obtaining rgb format, turn according to default form
The view data of rgb format is converted to the view data of YCbCr format by scaling method, and from the view data of YCbCr format
Obtain the brightness data of each pixel of image.After the brightness data obtaining each pixel of image, by pictures all on image
The brightness data of vegetarian refreshments carries out statistical computation, and obtains each backlight subarea according to the result of statistical computation and the partition information of image
Brightness data.After the brightness data obtaining each backlight subarea, further according to the bit wide of each backlight subarea backlight value, by each backlight
The backlight value being converted to each backlight subarea of the brightness data equal proportion of subregion.Wherein, the statistical computation side of above-mentioned brightness data
Method has multiple, and such as averaging method, maximum value process, maximum peace mean value weighting method etc., these methods are in prior art often
Method, here repeat no more.
Step S102, according to described display area, concentrate from default light diffusion model and obtain corresponding light diffusion model.
Owing to the brightness of each backlight subarea to be extended influence, when light diffusion model by the light of backlight subarea about
When light range of scatter is bigger, each backlight subarea that target image is corresponding is affected the biggest by other backlight subarea, each backlight
The intrinsic brilliance of subregion is the biggest；Otherwise, when the light range of scatter of light diffusion model is less, then corresponding each of target image
Backlight subarea is affected the least by other backlight subarea, and the brightness of each backlight subarea is the most dark.Therefore, it can root
According to the difference of the display area of target image, pre-set different light diffusion models, to adapt to the needs of brightness of image regulation.
Such as, when target image is a little area bright image, a bigger light diffusion of corresponding backlight subarea diffusion can be preset
Model, to improve the light diffusion of little area bright image backlight subarea, thus improves the brightness of little area bright image.Work as target
When image is larger area bright image, a less light diffusion model of corresponding backlight subarea diffusion can be preset, to reduce
The light diffusion of larger area bright image backlight subarea, reduces the brightness of larger area bright image.
For example, Fig. 3 is the backlight subarea schematic diagram of the little area bright image obtained according to the embodiment of the present invention one,
Wherein, image A ' (star region of closing) is little area bright image.Its display area and the display area of image A in Fig. 1
Identical.As it is shown on figure 3, owing to image A ' is little area bright image, therefore, according to the method for the present embodiment, it should select the back of the body
The brightness of image A ' is processed by the light diffusion model that light range of scatter is bigger.Image A ' after the process of light diffusion model
The rectangle shadow region that light range of scatter is 5*5 in Fig. 3, and the rectangle shade that light range of scatter is 3*3 of image A in Fig. 1
Region, thus, each backlight subarea corresponding compared to image A, image A ' is extended influence relatively big by the light of other backlight subarea,
The brightness of the image A ' brightness more than image A.
Step S103, according to described smooth diffusion model and each first backlight value, determine second back of the body of each described backlight subarea
Light value, wherein, described second backlight value is for adjusting the brightness of corresponding described backlight subarea.
Concrete, after each backlight subarea is extended influence by the light of other backlight subarea, its actual backlight value (i.e. second
Backlight value) can be calculated by equation below:
Wherein, i, j are the coordinate of light diffusion model, and n, m, s, h are the positive integer more than or equal to 1, and s is big more than or equal to n, h
In equal to the actual backlight value that m, BL are each backlight subarea that target image is corresponding, PSF is light spread function, and x, y are that backlight is divided
The coordinate of pixel in district, BL (j, i) be coordinate be (j, the backlight value (the i.e. first backlight value) of backlight subarea i).
Here it should be noted that the determination light diffusion model described in step S102, actually determine above-mentioned
The light range of scatter of the value of s and h in formula, i.e. light diffusion model.In Fig. 3 as a example by image A ', expand at light corresponding for image A '
Dissipating in model, the value of s and h is 5, i.e. the matrix model that light range of scatter is a 5*5 of the light diffusion model that image A ' is corresponding
Enclose.Compared to the light diffusion model that light range of scatter in Fig. 1 is 3*3 matrix, light range of scatter is the light diffusion of 5*5 matrix scope
The light that model can increase in image between each backlight subarea extends influence, and strengthens the brightness of image.
As Fig. 2 b embodiment of the present invention one also provides for another backlight brightness regulation method, after Fig. 2 a step, such as figure
Shown in 2b, the most also include:
Step S104, the second backlight value according to each described backlight subarea, adjust the brightness of each described backlight subarea.
Concrete, Fig. 4 is the execution method schematic diagram of step S104 in Fig. 2 b illustrated embodiment, as shown in Figure 4, step
S104 can include step performed below:
Step S1041, the second backlight value according to each described backlight subarea, calculate the brightness value of each described backlight subarea.
The execution method of this step with in prior art according to backlight value calculate brightness value method similar, the most no longer
Repeat.
The subregion mapping relations that step S1042, basis are preset, determine the subregion coordinate of each described backlight subarea.
Concrete, subregion mapping relations can be presented in subregion mapping relations list, and these subregion mapping relations are deposited
Store up is the corresponding relation of each backlight subarea and subregion coordinate.The each backlight subarea of acquisition can be searched according to these subregion mapping relations
Coordinate position.
Step S1043, according to brightness value corresponding to each backlight subarea and subregion coordinate, generate control information.
Concrete, this step can be accomplished by:
Mode one
After the subregion coordinate finding each backlight subarea corresponding to target image, divide according to searching each backlight obtained
The subregion coordinate in district determines the dutycycle of each backlight subarea, the dutycycle corresponding further according to each backlight subarea and brightness value, raw
Become control information.Wherein, the method determining backlight subarea dutycycle according to subregion coordinate, similarly to the prior art, the most not
Repeat again.
Mode two
First according to the brightness value of each backlight subarea, determine the current value of each backlight subarea, divide further according to each backlight
Current value that district is corresponding and subregion coordinate, generate control information, and controls on respective regions in backlight according to the information of control
Electric current, thus control the brightness of backlight.
Step S1044, according to described control information, adjust the brightness of each backlight subarea.
The present embodiment, by judging the size of target image display area, obtains the light adapted with target image area
Diffusion model, and by the light diffusion model got, the brightness of each backlight subarea of target image is adjusted so that
When showing little area bright image, the brightness that will not cause image because the area of image is too small is too low, or, big in display
During area bright image, the display brightness that will not cause image because the area of image is excessive is too high, thus improves image
Display effect, enhance the viewing experience of user.
Fig. 5 is the method flow schematic diagram determining light diffusion model in the embodiment of the present invention two, as it is shown in figure 5, at Fig. 2 a
On the basis of illustrated embodiment, according to display area, the present embodiment determines that the method for light diffusion model includes:
Step S11, described display area is contrasted with the first threshold preset, if described display area is less than described
First threshold, then perform step S12, otherwise perform step S13.
For when showing little area bright image in reality, the backlight subarea of unlatching is less, and brightness of image is dark
Problem, the present embodiment, pre-set an image area threshold value (i.e. first threshold), this threshold value is for judging the face of target image
Amass and whether belong to little area graph picture, such as, then determine this target image area when judging target image area less than this threshold value
Belong to little area graph picture.This threshold value be set to what those skilled in the art were the most specifically arranged, the most do not do concrete
Limit.
Step S12, the light diffusion model that acquisition is corresponding with described first threshold from described default light diffusion model, use
In the brightness improving each described backlight subarea.
Concrete, for little area graph picture, the present embodiment pre-sets a bigger light diffusion of backlight subarea light diffusion
Model is the most corresponding.When the display area judging target image be little area graph as time, then according to this light diffusion model expanded view
As the range of scatter of backlight subarea, thus the light increased between backlight subarea extends influence, and improves the brightness of each backlight subarea.
Step S13, concentrate from described default light diffusion model and obtain general light diffusion model.
Further, the present embodiment, in addition to arranging single light diffusion model for little area graph picture, is also provided with one
Individual general light diffusion model.Similar with prior art is fixed light diffusion model, when judging target image display area not
Little area graph as time, then use this general light diffusion model that the brightness of image is adjusted.
The present embodiment is by arranging a single light diffusion model for little area graph picture, and is increased by this light diffusion model
Add little area graph as the diffusion zone of backlight subarea, thus add the brightness of little area graph picture, improve the display effect of image
Fruit and user's viewing experience.
Fig. 6 is the method flow schematic diagram determining light diffusion model in the embodiment of the present invention three, as shown in Figure 6, at Fig. 2 a
On the basis of illustrated embodiment, according to display area, the present embodiment determines that the method for light diffusion model includes:
Step S21, described display area is contrasted with the Second Threshold preset, if described display area is more than described
Second Threshold, then perform step S22, otherwise, perform step S23.
During for display larger area bright image, the backlight subarea of unlatching is more, higher the asking of intrinsic brilliance of image
Topic, the present embodiment, pre-set an image area threshold value (i.e. Second Threshold), this threshold value is for judging the area of target image
Whether belong to picture of large image scale, such as, then determine that this image area belongs to relatively when judging target image area more than this threshold value
Picture of large image scale.This threshold value be set to what those skilled in the art were the most specifically arranged, be here not specifically limited.
Step S22, concentrate from described default light diffusion model and obtain the light diffusion model corresponding with described Second Threshold,
For reducing the brightness of each described backlight subarea.
Concrete, for larger area image, the present embodiment pre-sets the less light of backlight subarea light diffusion and expands
Scattered model is the most corresponding.When the display area judging target image is larger area image, then subtract according to this light diffusion model
The diffusion of little backlight subarea, thus the light reduced between backlight subarea extends influence, and reduces the brightness of each backlight subarea.
Step S23, from described default light diffusion model, obtain general light diffusion model.
Further, the present embodiment, in addition to arranging single light diffusion model for larger area image, is also provided with
One general light diffusion model.Similar with prior art is fixed light diffusion model, when the display surface judging target image
Long-pending when not being larger area image, then use this general light diffusion model that the brightness of image is adjusted.
The present embodiment, by arranging a single light diffusion model for larger area image, by this light diffusion model
Reduce the diffusion zone of larger area image back light subregion, thus reduce the brightness of larger area image, improve image
Display effect and user's viewing experience.
But, although above-mentioned Fig. 5 can solve the problem that show little area graph as time brightness problem, but for display area relatively
Big image, it still can not solve the brightness problem of larger area image.In like manner, embodiment illustrated in fig. 6 there is also similar
Problem.
For the problems referred to above, the embodiment of the present invention five proposes a kind of backlight on the basis of above-mentioned Fig. 2 a illustrated embodiment
Luminance regulating method, in order to solve simultaneously little area show and larger area show present in problem.
Fig. 7 is the method flow schematic diagram determining light diffusion model in the embodiment of the present invention four, as it is shown in fig. 7, at Fig. 2 a
On the basis of illustrated embodiment, according to display area, the present embodiment determines that the method for light diffusion model includes:
Step S31, from each preset threshold range, determine the threshold range area matched with described display.
In order to refine the regulation of the brightness of image to difference display area further, the present embodiment shows previously according to image
The size of area, is divided into multiple different threshold range, in the range of being in same area by the display area of image
The light characteristic of image, arranges the light diffusion model with corresponding backlight subarea range of scatter for corresponding areal extent.Thus root
It is adjusted according to the brightness of the light diffusion model corresponding from each areal extent image to having different display area.Wherein, face
The division of long-pending scope, and the light characteristic of image in the range of same area, can be obtained by existing statistical method, here
Just repeat no more.
Further, after determining the light diffusion model that each threshold range is corresponding, each threshold range can be expanded with each light
Scattered model is associated storage, in order to follow-up call light diffusion model.
Step S32, corresponding relation according to each preset threshold range Yu light diffusion model, concentrate from described smooth diffusion model
Obtain the light diffusion model corresponding with described threshold range.
Concrete, after the threshold range that the display area determining target image is corresponding, according to pre-setting each of storage
The corresponding relation of threshold range and each smooth diffusion model, determines the light diffusion model that this target image display area is corresponding, and from
The storage position of this light diffusion model obtains this light diffusion model.
The present embodiment, by display area is divided into multiple threshold range, and arranges a list for each threshold range
Only light diffusion model, is adjusted the brightness of the image of difference display area by different light diffusion models, not only can
Enough solve little area bright image, the problem that brightness of image is relatively low, larger area bright image, brightness of image can also be solved simultaneously
Higher problem.Improve the display effect of image, enhance the viewing experience of user.
The structural representation of a kind of backlight illumination adjusting apparatus that Fig. 8 a provides for the embodiment of the present invention five, such as Fig. 8 a institute
Showing, the backlight illumination adjusting apparatus that the present embodiment provides includes:
First determines module 10, for according to received image signal, determines the display area of target image and described target
First backlight value of each backlight subarea that image is corresponding；
Acquisition module 20, for according to described display area, concentrating from default light diffusion model and obtain corresponding light expansion
Dissipate model；
Second determines module 30, for according to described smooth diffusion model and each first backlight value, determines that each described backlight is divided
Second backlight value in district, wherein, described second backlight value is for adjusting the brightness of corresponding described backlight subarea.
Concrete, such as the structural representation of another backlight illumination adjusting apparatus that Fig. 8 b provides for the embodiment of the present invention five
Figure, as this backlight illumination adjusting apparatus of Fig. 8 b also includes, adjusting module 40, for the second backlight according to each described backlight subarea
Value, adjusts the brightness of each described backlight subarea.
Wherein, described adjusting module 40, including:
Process submodule 401, for the second backlight value according to each described backlight subarea, calculate each described backlight subarea
Brightness value；
Second determines submodule 402, for according to the subregion mapping relations preset, determining the subregion of each described backlight subarea
Coordinate；
Generate submodule 403, for the brightness value corresponding according to each backlight subarea and subregion coordinate, generate control information；
Implementation sub-module 404, for according to described control information, adjusts the brightness of each backlight subarea.
Described generation submodule 403, specifically for:
Subregion coordinate according to each backlight subarea, determines the dutycycle of each backlight subarea；
According to each backlight subarea dutycycle and brightness value, generate control information.
Described generation submodule 403, is specifically additionally operable to:
According to the brightness value of each backlight subarea, determine the current value of each backlight subarea；
The current value corresponding according to each backlight subarea and subregion coordinate, generate control information.
The backlight illumination adjusting apparatus that the present embodiment provides, it is possible to for performing method as shown in Figure 2 b, it is specifically held
Line mode is similar with Fig. 2 b illustrated embodiment with beneficial effect, here repeats no more.
The structural representation of a kind of backlight illumination adjusting apparatus that Fig. 9 provides for the embodiment of the present invention six, as it is shown in figure 9,
The present embodiment on the basis of structure shown in Fig. 8 a, described acquisition module 20, including:
First comparer module 201, for contrasting described display area with the first threshold preset；
Second obtains submodule 202, for when described display area is less than described first threshold, from described default light
Diffusion model is concentrated and is obtained the light diffusion model corresponding with described first threshold, for improving the brightness of each described backlight subarea；
Second obtains submodule 202, is additionally operable to when described display area is more than or equal to described first threshold, from described
The light diffusion model preset is concentrated and is obtained general light diffusion model.
The backlight illumination adjusting apparatus that the present embodiment provides, it is possible to for performing method as shown in Figure 5, it specifically performs
Mode is similar with embodiment illustrated in fig. 5 with beneficial effect, here repeats no more.
The structural representation of a kind of backlight illumination adjusting apparatus that Figure 10 provides for the embodiment of the present invention seven, such as Figure 10 institute
Show, the present embodiment on the basis of structure shown in Fig. 8 a, described acquisition module 20, including
Second contrast submodule 203, for contrasting described display area with the Second Threshold preset；
3rd obtains submodule 204, for when described display area is more than described Second Threshold, from described default light
Diffusion model is concentrated and is obtained the light diffusion model corresponding with described Second Threshold, for reducing the brightness of each described backlight subarea；
Described 3rd obtains submodule 204, is additionally operable to when described display area is less than or equal to described Second Threshold, from
Described default light diffusion model is concentrated and is obtained general light diffusion model.
The backlight illumination adjusting apparatus that the present embodiment provides, it is possible to for performing method as shown in Figure 6, it specifically performs
Mode is similar with embodiment illustrated in fig. 6 with beneficial effect, here repeats no more.
The structural representation of a kind of backlight illumination adjusting apparatus that Figure 11 provides for the embodiment of the present invention eight, such as Figure 11 institute
Show, the present embodiment on the basis of structure shown in Fig. 8 a, described acquisition module 20, including:
First determines submodule 205, for determining the threshold value area matched with described display from each preset threshold range
Scope；
First obtains submodule 206, according to the corresponding relation of each preset threshold range Yu light diffusion model, expands from described light
Dissipate and Models Sets obtains the light diffusion model corresponding with described threshold range.
The backlight illumination adjusting apparatus that the present embodiment provides, it is possible to for performing method as shown in Figure 7, it specifically performs
Mode is similar with embodiment illustrated in fig. 7 with beneficial effect, here repeats no more.
The structural representation of a kind of backlight illumination adjusting apparatus that Figure 12 provides for the embodiment of the present invention nine, such as Figure 12 institute
Showing, this device includes:
Processor；
For storing the memorizer of the executable instruction of described processor；
Wherein, described processor is configured to:
According to received image signal, determine each backlight subarea that the display area of target image is corresponding with described target image
The first backlight value；
According to described display area, concentrate from default light diffusion model and obtain corresponding light diffusion model；
According to described smooth diffusion model and each first backlight value, determine the second backlight value of each described backlight subarea, wherein,
Second backlight value of described backlight subarea is for adjusting the brightness of each described backlight subarea.
The backlight illumination adjusting apparatus that the present embodiment provides, it is possible to for performing method as shown in Figure 2 a, it is specifically held
Line mode is similar with Fig. 2 a illustrated embodiment with beneficial effect, here repeats no more.
Further, as Figure 13 provides a kind of display terminal for the embodiment of the present invention, as Figure 13 shows, this terminal includes backlight
Backlight illumination adjusting apparatus described in assembly, liquid crystal panel and embodiment nine；
Wherein, described backlight assembly, for providing light source, described backlight illumination adjusting apparatus and institute for described liquid crystal panel
State backlight assembly to be electrically connected with.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；To the greatest extent
The present invention has been described in detail by pipe with reference to foregoing embodiments, it will be understood by those within the art that: it depends on
So the technical scheme described in foregoing embodiments can be modified, or the most some or all of technical characteristic is entered
Row equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a backlight brightness regulation method, it is characterised in that including:
According to received image signal, determine the of each backlight subarea that the display area of target image is corresponding with described target image
One backlight value；
According to described display area, concentrate from default light diffusion model and obtain corresponding light diffusion model；
According to described smooth diffusion model and each first backlight value, determine the second backlight value of each described backlight subarea, wherein, described
Second backlight value is for adjusting the brightness of corresponding described backlight subarea.
Method the most according to claim 1, it is characterised in that described according to described display area, from default light diffusion
Models Sets obtains the light diffusion model of correspondence, including:
The threshold range area matched with described display is determined from each preset threshold range；
According to the corresponding relation of each preset threshold range Yu light diffusion model, concentrate from described smooth diffusion model and obtain and described threshold
The light diffusion model that value scope is corresponding.
Method the most according to claim 1, it is characterised in that described according to described display area, from default light diffusion
Models Sets obtains the light diffusion model of correspondence, including:
Described display area is contrasted with the first threshold preset, if described display area is less than described first threshold, then
Concentrate from described default light diffusion model and obtain the light diffusion model corresponding with described first threshold, be used for improving each described back of the body
The brightness of light subregion；
If described display area is more than or equal to described first threshold, then obtain general from described default light diffusion model
Light diffusion model.
Method the most according to claim 1, it is characterised in that described according to described display area, from default light diffusion
Models Sets obtains the light diffusion model of correspondence, including:
Described display area is contrasted with the Second Threshold preset, if described display area is more than described Second Threshold, then
Concentrate from described default light diffusion model and obtain the light diffusion model corresponding with described Second Threshold, be used for reducing each described back of the body
The brightness of light subregion；
If described display area is less than or equal to described Second Threshold, then concentrate acquisition general from described default light diffusion model
Light diffusion model.
5. a backlight illumination adjusting apparatus, it is characterised in that including:
First determines module, for according to received image signal, determines the display area of target image and described target image pair
First backlight value of each backlight subarea answered；
Acquisition module, for according to described display area, concentrates from default light diffusion model and obtains corresponding light diffusion model；
Second determines module, for according to described smooth diffusion model and each first backlight value, determines the of each described backlight subarea
Two backlight value, wherein, described second backlight value is for adjusting the brightness of corresponding described backlight subarea.
Backlight illumination adjusting apparatus the most according to claim 5, it is characterised in that described acquisition module, including:
First determines submodule, for determining the threshold range area matched with described display from each preset threshold range；
First obtains submodule, according to the corresponding relation of each preset threshold range Yu light diffusion model, from described smooth diffusion model
Concentrate and obtain the light diffusion model corresponding with described threshold range.
Backlight illumination adjusting apparatus the most according to claim 5, it is characterised in that described acquisition module, including:
First comparer module, for contrasting described display area with the first threshold preset；
Second obtains submodule, for when described display area is less than described first threshold, from described default light diffusion mould
Type obtains the light diffusion model corresponding with described first threshold, for improving the brightness of each described backlight subarea；
Second obtains submodule, is additionally operable to when described display area is more than or equal to described first threshold, from described default
Light diffusion model obtains general light diffusion model.
Backlight illumination adjusting apparatus the most according to claim 5, it is characterised in that described acquisition module, including:
Second contrast submodule, for contrasting described display area with the Second Threshold preset；
3rd obtains submodule, for when described display area is more than described Second Threshold, from described default light diffusion mould
Type obtains the light diffusion model corresponding with described Second Threshold, for reducing the brightness of each described backlight subarea；
Described 3rd obtains submodule, is additionally operable to when described display area is less than or equal to described Second Threshold, from described pre-
If light diffusion model in obtain general light diffusion model.
9. a backlight illumination adjusting apparatus, it is characterised in that including:
Processor；
For storing the memorizer of the executable instruction of described processor；
Wherein, described processor is configured to:
According to received image signal, determine the of each backlight subarea that the display area of target image is corresponding with described target image
One backlight value；
According to described display area, concentrate from default light diffusion model and obtain corresponding light diffusion model；
According to described smooth diffusion model and each first backlight value, determine the second backlight value of each described backlight subarea, wherein, described
Second backlight value of backlight subarea is for adjusting the brightness of corresponding described backlight subarea.
10. a display terminal, it is characterised in that including: backlight assembly, liquid crystal panel and carry on the back as claimed in claim 9
Brightness adjusting apparatus；
Wherein, described backlight assembly, for providing light source, described backlight illumination adjusting apparatus and the described back of the body for described liquid crystal panel
Optical assembly is electrically connected with.
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