CN105869579B - Backlight brightness regulation method, device and display terminal - Google Patents
Backlight brightness regulation method, device and display terminal Download PDFInfo
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- CN105869579B CN105869579B CN201610194659.4A CN201610194659A CN105869579B CN 105869579 B CN105869579 B CN 105869579B CN 201610194659 A CN201610194659 A CN 201610194659A CN 105869579 B CN105869579 B CN 105869579B
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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
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- Liquid Crystal Display Device Control (AREA)
Abstract
The embodiment of the present invention provides a kind of backlight brightness regulation method, device and display terminal, wherein this method comprises: determining the first backlight value of the display area of target image and the corresponding each backlight subarea of the target image according to received image signal；According to the display area, corresponding smooth diffusion model is obtained from preset each smooth diffusion model；According to the smooth diffusion model and each first backlight value, the second backlight value of each backlight subarea is determined；According to the second backlight value of each backlight subarea, the brightness of each backlight subarea is adjusted.Backlight brightness regulation method, device and display terminal provided in an embodiment of the present invention, can be improved the display effect of image, enhance the viewing experience of user.
Description
Technical field
The present embodiments relate to image display technology field more particularly to a kind of backlight brightness regulation method, device and
Display terminal.
Background technique
Liquid crystal display is usually made of liquid crystal display panel and back light unit, and the optical transport that back light unit issues constant homogeneous is given
Liquid crystal display panel, liquid crystal display panel show different images again by adjusting pixel transmittance rate.
The image as shown by liquid crystal display panel changes with light and shade, if back light unit shines according to equivalent brightness always
If, it can be because of the problem of light leakage phenomena of liquid crystal display panel causes the saturation degree of picture and contrast to reduce.For this problem,
The prior art is divided into different subregions by using dynamic backlight control technology, by screen-picture, according to different subregions input picture
Light and shadow characteristics the brightness of back light unit in different subregions is adjusted, it is full so as to improve the dynamic contrast and color of picture
And degree.
Dynamic backlight control technology is using fixed light diffusion model in the prior art, i.e., no matter picture display face
Product size, is all made of a general light diffusion model and is adjusted to the brightness of image back light subregion.Fig. 1 is in the prior art
The backlight subarea schematic diagram of image, as shown in Figure 1, light diffusion model of the Fig. 1 using 3*3, when the bright figure of display small area
When picture (image A), backlight subarea opens 9, and when showing large area bright image (i.e. image B), the backlight subarea of unlatching
It is 25, therefore, image A is extended influence by the light of 9 backlight subareas, and image B is then spread shadow by the light of 25 backlight subareas
It rings.Even if each backlight subarea brightness in image A and image B is identical, and the average gray value of image A and image B are also identical
In the case where, it is practical since the illumination diffusion between backlight subarea can make the intrinsic brilliance of image B be higher than the intrinsic brilliance of image A
The brightness of image A also can be more much lower than the brightness of image B in situation, this has seriously affected the display effect of 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, to solve the prior art
The problem of middle picture display face product influences image display brightness, improves the display effect and user's viewing experience of image.
First aspect of the embodiment of the present invention provides a kind of backlight brightness regulation method, this method comprises:
According to received image signal, the display area of target image and the corresponding each backlight subarea of the target image are determined
The first backlight value；
According to the display area, is concentrated from preset smooth diffusion model and obtain corresponding smooth diffusion model；
According to the smooth diffusion model and each first backlight value, the second backlight value of each backlight subarea is determined, wherein
Second backlight value is used to adjust the brightness of the corresponding backlight subarea.
Second aspect of the embodiment of the present invention provides a kind of backlight illumination adjustment device, which includes:
First determining module, for according to received image signal, determine target image display area and the target figure
As the first backlight value of corresponding each backlight subarea；
Module is obtained, for concentrating from preset smooth diffusion model and obtaining corresponding light diffusion according to the display area
Model；
Second determining module, for determining each backlight subarea according to the smooth diffusion model and each first backlight value
The second backlight value, wherein second backlight value is used to adjust the brightness of the corresponding backlight subarea.
The third aspect of the embodiment of the present invention provides a kind of backlight illumination adjustment device, the device, comprising:
Processor；
For storing the memory of the executable instruction of the processor；
Wherein, the processor is configured to:
According to received image signal, the display area of target image and the corresponding each backlight subarea of the target image are determined
The first backlight value；
According to the display area, is concentrated from preset smooth diffusion model and obtain corresponding smooth diffusion model；
According to the smooth diffusion model and each first backlight value, the second backlight value of each backlight subarea is determined, wherein
Second backlight value is used to adjust the brightness of the corresponding backlight subarea.
Fourth aspect of the embodiment of the present invention provides a kind of display terminal, the display terminal, comprising:
Backlight assembly, liquid crystal display panel and such as described in any item backlight illuminations of claim 8-15 adjust devices；
Wherein, the backlight assembly, for providing light source, the backlight illumination adjustment device and institute for the liquid crystal display panel
State backlight assembly electric connection.
The embodiment of the present invention is obtained and is adapted with target image area by judging the size of target image display area
Light diffusion model, and the brightness of each backlight subarea of target image is adjusted by the light diffusion model that gets, is made
When show small area bright image, will not because of image area it is too small and cause the brightness of image too low, alternatively, showing
When showing large area bright image, will not because of image area it is excessive and cause the display brightness of image excessively high, to improve
The display effect of image enhances the viewing experience of user.
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 only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is the backlight subarea schematic diagram of image in the prior art；
Fig. 2 a is the flow diagram for the backlight brightness regulation method that the embodiment of the present invention one provides；
Fig. 2 b is the flow diagram of the another backlight brightness regulation method provided of the embodiment of the present invention；
Fig. 3 is the backlight subarea schematic diagram of the small 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 that light diffusion model is determined in the embodiment of the present invention two；
Fig. 6 is the method flow schematic diagram that light diffusion model is determined in the embodiment of the present invention three；
Fig. 7 is the method flow schematic diagram that light diffusion model is determined in the embodiment of the present invention four；
Fig. 8 a is the structural schematic diagram that a kind of backlight illumination that the embodiment of the present invention five provides adjusts device；
Fig. 8 b is the structural schematic diagram that another backlight illumination that the embodiment of the present invention five provides adjusts device；
Fig. 9 is the structural schematic diagram that a kind of backlight illumination that the embodiment of the present invention six provides adjusts device；
Figure 10 is the structural schematic diagram that a kind of backlight illumination that the embodiment of the present invention seven provides adjusts device；
Figure 11 is the structural schematic diagram that a kind of backlight illumination that the embodiment of the present invention eight provides adjusts device；
Figure 12 is the structural schematic diagram that a kind of backlight illumination that the embodiment of the present invention nine provides adjusts device；
Figure 13 provides a kind of display terminal for the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The term " includes " of description and claims of this specification and " having " and their any deformation, it is intended that
Be to cover it is non-exclusive include, for example, the device of the process or structure that contain series of steps is not necessarily limited to clearly arrange
Those of out structure or step but may include other steps being not clearly listed or intrinsic for these processes or device
Rapid or structure.
Fig. 2 a is the flow diagram for the backlight brightness regulation method that the embodiment of the present invention one provides, wherein graphic technique
Executing subject can for configuration in liquid crystal display (such as LCD TV, liquid crystal display or tablet computer etc.)
Backlight illumination adjustment device execute, which can pass through software and or hardware realization.As shown in Figure 2 a, the present embodiment
The method of offer includes the following steps:
Step S101, according to received image signal, determine that the display area of target image and the target image are corresponding
First backlight value of each backlight subarea.
In the present embodiment, received image signal can be the input of such as LCD TV, liquid crystal display liquid crystal display
Picture signal, the received image signal include the image data of rgb format.Target image is the highlighted envelope for including in input picture
Closed zone area image, exemplary, image A and image B as shown in figure 1 may include multiple in one frame input picture.Target image can be
It is determined according to preset selection strategy, which can be those skilled in the art's sets itself as needed
's.Display area is that the gross area of the corresponding all backlight subareas of target image or the boundary pixel of the target image determine
Display area.
After obtaining received image signal, it is each to be shown that backlight illumination, which adjusts device according to received image signal,
Image divides several virtual partitions, wherein each virtual partition corresponds to a backlight subarea.Due to the face of each backlight subarea
Product has been set when dividing backlight subarea, therefore, by the area of single backlight subarea virtual partition corresponding with target image
Number (i.e. the number of the corresponding backlight subarea of target image) do product calculation, can be obtained the display area of target image.
Further, backlight value (i.e. the first backlight value) of the corresponding each backlight subarea of input picture obtains in the present embodiment
Take algorithm similarly to the prior art, for example, after the received image signal for obtaining rgb format, turn according to preset format
The image data of rgb format is converted to the image data of YCbCr format by scaling method, and from the image data of YCbCr format
Obtain the brightness data of each pixel of image.After the brightness data for obtaining each pixel of image, by pictures all on image
The brightness data of vegetarian refreshments carries out statistics calculating, and the partition information of the result and image calculated according to statistics obtains each backlight subarea
Brightness data.After the brightness data for obtaining each backlight subarea, further according to the bit wide of each backlight subarea backlight value, by each backlight
The backlight value for being converted to each backlight subarea of the brightness data equal proportion of subregion.Wherein, the statistics calculating side of above-mentioned brightness data
There are many methods, such as the method for average, maximum value process, maximum value peace mean value weighting method etc., these methods are normal in the prior art
Method repeats no more herein.
Step S102, it according to the display area, is concentrated from preset smooth diffusion model and obtains corresponding smooth diffusion model.
Since the brightness of each backlight subarea will be extended influence by the light of backlight subarea around it, when light diffusion model
When light range of scatter is larger, the corresponding each backlight subarea of target image is influenced by other backlight subareas with regard to larger, each backlight
The intrinsic brilliance of subregion is also bigger；Conversely, then target image is corresponding each when the light range of scatter of light diffusion model is smaller
Backlight subarea is influenced just smaller by other backlight subareas, and the brightness of each backlight subarea is also just relatively darker.Therefore, Ke Yigen
According to the difference of the display area of target image, different light diffusion models is preset, to adapt to the needs of brightness of image adjusting.
For example, can preset a corresponding backlight subarea when target image is a small area bright image and spread biggish light diffusion
Model, to improve the light diffusion of small area bright image backlight subarea, to improve the brightness of small area bright image.Work as target
When image is larger area bright image, a corresponding backlight subarea can be preset and spread lesser smooth diffusion model, to reduce
The light of larger area bright image backlight subarea is spread, and reduces the brightness of larger area bright image.
For example, Fig. 3 is the backlight subarea schematic diagram of the small area bright image obtained according to the embodiment of the present invention one,
Wherein, image A ' (closed star region) is small area bright image.The display area of its display area and image A in Fig. 1
It is identical.As shown in figure 3, since image A ' is small area bright image, according to the method for the present embodiment, it should selection back
The biggish smooth diffusion model of light range of scatter handles the brightness of image A '.The image A ' after the processing of light diffusion model
Light range of scatter be Fig. 3 in 5*5 rectangle shadow region, and in Fig. 1 image A light range of scatter be 3*3 rectangle shade
Region, thus, compared to image A, the corresponding each backlight subarea image A ' extended influence by the light of other backlight subareas it is larger,
The brightness of image A ' is greater than the brightness of image A.
Step S103, according to the smooth diffusion model and each first backlight value, the second back of each backlight subarea is determined
Light value, wherein second backlight value is used to adjust the brightness of the corresponding backlight subarea.
Specifically, after each backlight subarea is extended influence by the light of other backlight subareas, practical backlight value (i.e. second
Backlight value) it can be calculated by following formula:
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 more than or equal to n, and h is big
In being equal to m, BL is the practical backlight value of the corresponding each backlight subarea of target image, and PSF is light spread function, and x, y are backlight point
The coordinate of pixel in area, BL (j, i) are the backlight value (i.e. the first backlight value) for the backlight subarea that coordinate is (j, i).
Herein it should be noted that determination light diffusion model described in step S102, actually determines above-mentioned
The value of s and h in formula, i.e. the light range of scatter of light diffusion model.By taking image A ' in Fig. 3 as an example, expand in the corresponding light of image A '
It dissipates in model, the value of s and h are 5, i.e. the light range of scatter of the corresponding smooth diffusion model of image A ' is the matrix model of a 5*5
It encloses.Compared to the light diffusion model that light range of scatter in Fig. 1 is 3*3 matrix, light range of scatter is that the light of 5*5 matrix range is spread
The light that model is capable of increasing in image between each backlight subarea extends influence, and enhances the brightness of image.
If Fig. 2 b embodiment of the present invention one also provides another backlight brightness regulation method, after Fig. 2 a step, such as scheme
Shown in 2b, specifically further include:
Step S104, according to the second backlight value of each backlight subarea, the brightness of each backlight subarea is adjusted.
Specifically, Fig. 4 is the execution method schematic diagram of step S104 in Fig. 2 b illustrated embodiment, as shown in figure 4, step
S104 may include step performed below:
Step S1041, according to the second backlight value of each backlight subarea, the brightness value of each backlight subarea is calculated.
The execution method of this step in the prior art according to backlight value calculate the method for brightness value it is similar, herein no longer
It repeats.
Step S1042, according to preset subregion mapping relations, the subregion coordinate of each backlight subarea is determined.
Specifically, subregion mapping relations can exist in the form of subregion mapping relations list, which is deposited
What is stored up is the corresponding relationship of each backlight subarea Yu subregion coordinate.It can be searched according to the subregion mapping relations and obtain each backlight subarea
Coordinate position.
Step S1043, according to the corresponding brightness value in each backlight subarea and subregion coordinate, control information is generated.
Specifically, this step can be accomplished by the following way:
Mode one
After the subregion coordinate for finding the corresponding each backlight subarea of target image, divide according to each backlight obtained is searched
The subregion coordinate in area determines the duty ratio of each backlight subarea, raw further according to the corresponding duty ratio in each backlight subarea and brightness value
At control information.Wherein, the method for backlight subarea duty ratio being determined according to subregion coordinate, similarly to the prior art, herein not
It repeats again.
Mode two
First according to the brightness value of each backlight subarea, the current value of each backlight subarea is determined, further according to each backlight point
The corresponding current value in area and subregion coordinate generate control information, and are controlled on corresponding region according to the control information in backlight
Electric current, to control the brightness of backlight.
Step S1044, according to the control information, the brightness of each backlight subarea is adjusted.
The present embodiment obtains the light being adapted with target image area by judging the size of target image display area
Diffusion model, and the light diffusion model by getting is adjusted the brightness of each backlight subarea of target image, so that
When showing small area bright image, will not because of image area it is too small and cause the brightness of image too low, alternatively, big in display
When area bright image, will not because of image area it is excessive and cause the display brightness of image excessively high, to improve image
Display effect, enhance the viewing experience of user.
Fig. 5 is the method flow schematic diagram that light diffusion model is determined in the embodiment of the present invention two, as shown in figure 5, in Fig. 2 a
On the basis of illustrated embodiment, the present embodiment includes: according to the method that display area determines light diffusion model
Step S11, the display area and preset first threshold are compared, if the display area is less than described
First threshold thens follow the steps S12, no to then follow the steps S13.
When for showing small area bright image in reality, the backlight subarea of unlatching is less, and brightness of image is darker
Problem, the present embodiment preset an image area threshold value (i.e. first threshold), which is used to judge the face of target image
Whether product belongs to small area image, such as then determines the target image area when judging that target image area is less than this threshold value
Belong to small area image.This threshold value is set as what those skilled in the art were specifically arranged as needed, does not do herein specific
It limits.
Step S12, smooth diffusion model corresponding with the first threshold is obtained from the preset smooth diffusion model, is used
In the brightness for improving each backlight subarea.
Specifically, being directed to small area image, the present embodiment presets a backlight subarea light and spreads biggish light diffusion
Model is corresponding to it.When judging the display area of target image for small area image, then according to the light diffusion model expanded view
As the range of scatter of backlight subarea, so that the light increased between backlight subarea extends influence, the brightness of each backlight subarea is improved.
Step S13, it is concentrated from the preset smooth diffusion model and obtains general light diffusion model.
Further, the present embodiment is also provided with one other than individual light diffusion model is arranged for small area image
A general light diffusion model.It is similar with light diffusion model is fixed in the prior art, when judging target image display area not
When being small area image, then the brightness of image is adjusted using the general light diffusion model.
The present embodiment is increased by the way that an individual light diffusion model is arranged for small area image by the light diffusion model
Add the diffusion zone of small area image back light subregion, to increase the brightness of small area image, improves the display effect of image
Fruit and user's viewing experience.
Fig. 6 is the method flow schematic diagram that light diffusion model is determined in the embodiment of the present invention three, as shown in fig. 6, in Fig. 2 a
On the basis of illustrated embodiment, the present embodiment includes: according to the method that display area determines light diffusion model
Step S21, the display area and preset second threshold are compared, if the display area is greater than described
Second threshold thens follow the steps S22, otherwise, executes step S23.
When for display larger area bright image, the backlight subarea of unlatching is more, and the intrinsic brilliance of image is higher to ask
Topic, the present embodiment preset an image area threshold value (i.e. second threshold), which is used to judge the area of target image
Whether belong to picture of large image scale, for example, then determine when judging that target image area is greater than this threshold value the image area belong to compared with
Picture of large image scale.This threshold value is set as what those skilled in the art were specifically arranged as needed, is not specifically limited herein.
Step S22, it is concentrated from the preset smooth diffusion model and obtains smooth diffusion model corresponding with the second threshold,
For reducing the brightness of each backlight subarea.
Specifically, being directed to larger area image, the present embodiment presets a backlight subarea light and spreads lesser light expansion
Scattered model is corresponding to it.When judging the display area of target image for larger area image, then subtracted according to the light diffusion model
The diffusion of small backlight subarea reduces the brightness of each backlight subarea so that the light reduced between backlight subarea extends influence.
Step S23, general light diffusion model is obtained from the preset smooth diffusion model.
Further, the present embodiment is also provided with other than individual light diffusion model is arranged for larger area image
One general light diffusion model.It is similar with light diffusion model is fixed in the prior art, when the display surface for judging target image
When product is not larger area image, then the brightness of image is adjusted using the general light diffusion model.
The present embodiment passes through the light diffusion model by the way that an individual light diffusion model is arranged for larger area image
The diffusion zone for reducing larger area image back light subregion improves image to reduce the brightness of larger area image
Display effect and user's viewing experience.
However, above-mentioned Fig. 5 be although able to solve display small area image when brightness problem, but for display area compared with
Big image not can solve the brightness problem of larger area image still.Similarly, there is also similar for embodiment illustrated in fig. 6
Problem.
In view of the above-mentioned problems, 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, to solve the problems, such as that small area is shown and larger area is shown simultaneously.
Fig. 7 is the method flow schematic diagram that light diffusion model is determined in the embodiment of the present invention four, as shown in fig. 7, in Fig. 2 a
On the basis of illustrated embodiment, the present embodiment includes: according to the method that display area determines light diffusion model
Step S31, the determining and matched threshold range of the display area from each preset threshold range.
In order to further refine the adjusting of the brightness of image to different display areas, the present embodiment is shown previously according to image
The display area of image is divided into multiple and different threshold ranges by the size of area, according in same areal extent
The light characteristic of image has the light diffusion model of corresponding backlight subarea range of scatter for the setting of corresponding area range.To root
The brightness of the image with different display areas is adjusted according to smooth diffusion model corresponding from each areal extent.Wherein, face
The light characteristic of image, can be obtained, herein by existing statistical method in the division of product range and same areal extent
Just repeat no more.
Further, after determining the corresponding smooth diffusion model of each threshold range, each threshold range and each light can be expanded
Scattered model is associated storage, is called so as to subsequent to light diffusion model.
Step S32, it according to the corresponding relationship of each preset threshold range and light diffusion model, is concentrated from the smooth diffusion model
Obtain smooth diffusion model corresponding with the threshold range.
Specifically, after the corresponding threshold range of display area for determining target image, according to presetting each of storage
The corresponding relationship of threshold range and each smooth diffusion model, determines the corresponding smooth diffusion model of the target image display area, and from
The light diffusion model is obtained in the storage location of the light diffusion model.
By the way that display area is divided into multiple threshold ranges, and a list is arranged for each threshold range in the present embodiment
Only light diffusion model is adjusted the brightness of the image of different display areas by different light diffusion models, not only can
Small area bright image, the lower problem of brightness of image are enough solved, while also can solve larger area bright image, brightness of image
Higher problem.The display effect for improving image enhances the viewing experience of user.
Fig. 8 a is the structural schematic diagram that a kind of backlight illumination that the embodiment of the present invention five provides adjusts device, such as Fig. 8 a institute
Show, backlight illumination adjustment device provided in this embodiment includes:
First determining module 10, for determining the display area and the target of target image according to received image signal
First backlight value of the corresponding each backlight subarea of image；
Module 20 is obtained, for concentrating from preset smooth diffusion model and obtaining corresponding light expansion according to the display area
Dissipate model；
Second determining module 30, for determining each backlight point according to the smooth diffusion model and each first backlight value
Second backlight value in area, wherein second backlight value is used to adjust the brightness of the corresponding backlight subarea.
Specifically, if Fig. 8 b is the structural representation that another backlight illumination that the embodiment of the present invention five provides adjusts device
Figure, if Fig. 8 b backlight illumination adjustment device further includes module 40 being adjusted, for the second backlight according to each backlight subarea
Value adjusts the brightness of each backlight subarea.
Wherein, the adjustment module 40, comprising:
Submodule 401 is handled, for the second backlight value according to each backlight subarea, calculates each backlight subarea
Brightness value；
Second determines submodule 402, for determining the subregion of each backlight subarea according to preset subregion mapping relations
Coordinate；
Submodule 403 is generated, for generating control information according to the corresponding brightness value in each backlight subarea and subregion coordinate；
Implementation sub-module 404, for adjusting the brightness of each backlight subarea according to the control information.
The generation submodule 403, is specifically used for:
According to the subregion coordinate of each backlight subarea, the duty ratio of each backlight subarea is determined；
According to each backlight subarea duty ratio and brightness value, control information is generated.
The generation submodule 403, is specifically also used to:
According to the brightness value of each backlight subarea, the current value of each backlight subarea is determined；
According to the corresponding current value in each backlight subarea and subregion coordinate, control information is generated.
Backlight illumination provided in this embodiment adjusts device, can be used in executing method as shown in Figure 2 b, specifically hold
Line mode and beneficial effect are similar with Fig. 2 b illustrated embodiment, repeat no more herein.
Fig. 9 is the structural schematic diagram that a kind of backlight illumination that the embodiment of the present invention six provides adjusts device, as shown in figure 9,
On the basis of the present embodiment structure shown in Fig. 8 a, the acquisition module 20, comprising:
First compares submodule 201, for comparing the display area and preset first threshold；
Second acquisition submodule 202 is used for when the display area is less than the first threshold, from the preset light
Diffusion model, which is concentrated, obtains smooth diffusion model corresponding with the first threshold, for improving the brightness of each backlight subarea；
Second acquisition submodule 202 is also used to when the display area is greater than or equal to the first threshold, from described
Preset smooth diffusion model, which is concentrated, obtains general light diffusion model.
Backlight illumination provided in this embodiment adjusts device, can be used in executing method as shown in Figure 5, specific to execute
Mode and beneficial effect are similar with embodiment illustrated in fig. 5, repeat no more herein.
Figure 10 is the structural schematic diagram that a kind of backlight illumination that the embodiment of the present invention seven provides adjusts device, such as Figure 10 institute
Show, on the basis of the present embodiment structure shown in Fig. 8 a, the acquisition module 20, including
Second comparison submodule 203, for comparing the display area and preset second threshold；
Third acquisition submodule 204 is used for when the display area is greater than the second threshold, from the preset light
Diffusion model, which is concentrated, obtains smooth diffusion model corresponding with the second threshold, for reducing the brightness of each backlight subarea；
The third acquisition submodule 204 is also used to when the display area is less than or equal to the second threshold, from
The preset smooth diffusion model, which is concentrated, obtains general light diffusion model.
Backlight illumination provided in this embodiment adjusts device, can be used in executing method as shown in FIG. 6, specific to execute
Mode and beneficial effect are similar with embodiment illustrated in fig. 6, repeat no more herein.
Figure 11 is the structural schematic diagram that a kind of backlight illumination that the embodiment of the present invention eight provides adjusts device, such as Figure 11 institute
Show, on the basis of the present embodiment structure shown in Fig. 8 a, the acquisition module 20, comprising:
First determines submodule 205, for the determining and matched threshold value of the display area from each preset threshold range
Range；
First acquisition submodule 206 expands according to the corresponding relationship of each preset threshold range and light diffusion model from the light
It dissipates and obtains smooth diffusion model corresponding with the threshold range in Models Sets.
Backlight illumination provided in this embodiment adjusts device, can be used in executing method as shown in Figure 7, specific to execute
Mode and beneficial effect are similar with embodiment illustrated in fig. 7, repeat no more herein.
Figure 12 is the structural schematic diagram that a kind of backlight illumination that the embodiment of the present invention nine provides adjusts device, such as Figure 12 institute
Show, which includes:
Processor；
For storing the memory of the executable instruction of the processor；
Wherein, the processor is configured to:
According to received image signal, the display area of target image and the corresponding each backlight subarea of the target image are determined
The first backlight value；
According to the display area, is concentrated from preset smooth diffusion model and obtain corresponding smooth diffusion model；
According to the smooth diffusion model and each first backlight value, the second backlight value of each backlight subarea is determined, wherein
Second backlight value of the backlight subarea is used to adjust the brightness of each backlight subarea.
Backlight illumination provided in this embodiment adjusts device, can be used in executing method as shown in Figure 2 a, specifically hold
Line mode and beneficial effect are similar with Fig. 2 a illustrated embodiment, repeat no more herein.
Further, a kind of display terminal is provided for the embodiment of the present invention such as Figure 13, if Figure 13 shows, which includes backlight
Backlight illumination described in component, liquid crystal display panel and embodiment nine adjusts device；
Wherein, the backlight assembly, for providing light source, the backlight illumination adjustment device and institute for the liquid crystal display panel
State backlight assembly electric connection.
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 (10)
1. a kind of backlight brightness regulation method characterized by comprising
According to received image signal, the of the display area of target image and the corresponding each backlight subarea of the target image is determined
One backlight value；
According to the display area, is concentrated from preset smooth diffusion model and obtain corresponding smooth diffusion model；
According to the smooth diffusion model and each first backlight value, the second backlight value of each backlight subarea is determined, wherein described
Second backlight value is used to adjust the brightness of the corresponding backlight subarea.
2. being spread from preset light the method according to claim 1, wherein described according to the display area
Corresponding smooth diffusion model is obtained in Models Sets, comprising:
The determining and matched threshold range of the display area from each preset threshold range；
According to the corresponding relationship of each preset threshold range and light diffusion model, concentrates and obtain and the threshold from the smooth diffusion model
It is worth the corresponding smooth diffusion model of range.
3. being spread from preset light the method according to claim 1, wherein described according to the display area
Corresponding smooth diffusion model is obtained in Models Sets, comprising:
The display area and preset first threshold are compared, if the display area is less than the first threshold,
It is concentrated from the preset smooth diffusion model and obtains smooth diffusion model corresponding with the first threshold, for improving each back
The brightness of light subregion；
If the display area is greater than or equal to the first threshold, obtained from the preset smooth diffusion model general
Light diffusion model.
4. being spread from preset light the method according to claim 1, wherein described according to the display area
Corresponding smooth diffusion model is obtained in Models Sets, comprising:
The display area and preset second threshold are compared, if the display area is greater than the second threshold,
It is concentrated from the preset smooth diffusion model and obtains smooth diffusion model corresponding with the second threshold, for reducing each back
The brightness of light subregion；
If the display area is less than or equal to the second threshold, concentrate acquisition general from the preset smooth diffusion model
Light diffusion model.
5. a kind of backlight illumination adjusts device characterized by comprising
First determining module, for according to received image signal, determine target image display area and the target image pair
First backlight value of each backlight subarea answered；
Module is obtained, for concentrating from preset smooth diffusion model and obtaining corresponding smooth diffusion model according to the display area；
Second determining module, for according to the smooth diffusion model and each first backlight value, determining the of each backlight subarea
Two backlight values, wherein second backlight value is used to adjust the brightness of the corresponding backlight subarea.
6. backlight illumination according to claim 5 adjusts device, which is characterized in that the acquisition module, comprising:
First determines submodule, for the determining and matched threshold range of the display area from each preset threshold range；
First acquisition submodule, according to the corresponding relationship of each preset threshold range and light diffusion model, from the smooth diffusion model
It concentrates and obtains smooth diffusion model corresponding with the threshold range.
7. backlight illumination according to claim 5 adjusts device, which is characterized in that the acquisition module, comprising:
First compares submodule, for comparing the display area and preset first threshold；
Second acquisition submodule, for spreading mould from the preset light when the display area is less than the first threshold
Smooth diffusion model corresponding with the first threshold is obtained in type, for improving the brightness of each backlight subarea；
Second acquisition submodule is also used to when the display area is greater than or equal to the first threshold, from described preset
General light diffusion model is obtained in light diffusion model.
8. backlight illumination according to claim 5 adjusts device, which is characterized in that the acquisition module, comprising:
Second comparison submodule, for comparing the display area and preset second threshold；
Third acquisition submodule, for spreading mould from the preset light when the display area is greater than the second threshold
Smooth diffusion model corresponding with the second threshold is obtained in type, for reducing the brightness of each backlight subarea；
The third acquisition submodule is also used to when the display area is less than or equal to the second threshold, from described pre-
If light diffusion model in obtain general light diffusion model.
9. a kind of backlight illumination adjusts device characterized by comprising
Processor；
For storing the memory of the executable instruction of the processor；
Wherein, the processor is configured to:
According to received image signal, the of the display area of target image and the corresponding each backlight subarea of the target image is determined
One backlight value；
According to the display area, is concentrated from preset smooth diffusion model and obtain corresponding smooth diffusion model；
According to the smooth diffusion model and each first backlight value, the second backlight value of each backlight subarea is determined, wherein described
Second backlight value of backlight subarea is used to adjust the brightness of the corresponding backlight subarea.
10. a kind of display terminal characterized by comprising backlight assembly, liquid crystal display panel and back as claimed in claim 9
Brightness adjusts device；
Wherein, the backlight assembly, for providing light source, the backlight illumination adjustment device and the back for the liquid crystal display panel
Optical assembly is electrically connected.
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| LU501037B1 (en) * | 2021-12-17 | 2023-06-20 | Barco Nv | Local Dimming on Video Walls |
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| CN108021265B (en) * | 2016-11-02 | 2021-06-11 | 群创光电股份有限公司 | Display device |
| CN109727582A (en) * | 2017-10-31 | 2019-05-07 | 深圳富泰宏精密工业有限公司 | The bearing calibration of electronic device and its display screen |
| CN108182912B (en) * | 2018-02-07 | 2020-07-10 | 深圳创维－Rgb电子有限公司 | Method, device, equipment and storage medium for adjusting backlight brightness |
| CN108648700B (en) | 2018-05-18 | 2020-02-18 | 京东方科技集团股份有限公司 | Dynamic dimming display control method and device for backlight source |
| CN109979401B (en) | 2019-05-06 | 2021-01-08 | 京东方科技集团股份有限公司 | Driving method, driving apparatus, display device, and computer readable medium |
| CN110189715B (en) * | 2019-06-28 | 2022-08-09 | 京东方科技集团股份有限公司 | Method for controlling display of display device, apparatus thereof, and display apparatus |
| CN112700751B (en) * | 2020-12-30 | 2022-08-19 | 联想(北京)有限公司 | Display method and electronic equipment |
| CN112863451B (en) * | 2021-01-18 | 2022-04-19 | 海信视像科技股份有限公司 | Display apparatus and backlight control method |
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