CN104240650A - Backlight source luminance control method and device used under wide-screen film display mode - Google Patents
Backlight source luminance control method and device used under wide-screen film display mode Download PDFInfo
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- CN104240650A CN104240650A CN201410432142.5A CN201410432142A CN104240650A CN 104240650 A CN104240650 A CN 104240650A CN 201410432142 A CN201410432142 A CN 201410432142A CN 104240650 A CN104240650 A CN 104240650A
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Abstract
The invention discloses a backlight source luminance control method and device used under a wide-screen film display mode. The method comprises the steps that when an image to be displayed is displayed in a display screen, a backlight partition where a backlight source needs to be turned off in the display screen is determined; the first backlight source luminance value of a backlight partition adjacent to the backlight partition where the backlight source needs to be turned off is determined; the first backlight source luminance value is lowered to obtain the second backlight source luminance value, and when the image to be displayed is displayed through the display screen, the backlight source luminance value of the adjacent backlight partition is set to be the second backlight source luminance value. According to the method, the light leakage phenomenon of the backlight source of the display screen can be controlled, and the image displayed by the display screen cannot be affected.
Description
Technical field
The present invention relates to backlight control field, particularly relate to control method and the device of back light source brightness under a kind of wide-screen film display mode.
Background technology
Because liquid crystal display assembling fixedly causes frame squeezed fluid crystal panel, corner liquid crystal molecule arrangement is caused to change; Or make reason because of blooming piece and cause display screen local uneven; Or because fixing loosely or degradation situation under expanded by heating generation surface smoothness display screen local, capital causes under the viewing condition that surround lighting is more weak, viewing picture material be black picture or low-brightness scene time, the light leakage phenomena of easy perception liquid crystal, thus infringement image frame quality.Especially, when playing the film of some ratio form, as wide screen movies, itself is just with black region; Or because LCDs length and width size is than different from the length breadth ratio playing film, and black region can be there is in display screen, the length breadth ratio as the display screen of LCD TV is 16:9, and the length breadth ratio of wide screen movies is approximately 21:9, specifically as shown in Figure 1.
Under wide-screen film display mode, the black region in display screen can produce light leakage phenomena, and reason has the following aspects: blooming piece causes display screen local uneven because making reason; Because display screen local is fixed loosely or the decline of expanded by heating generation surface smoothness; Because display screen assembling fixedly causes frame to extrude the corner light leak causing display screen.When picture material be black picture or low-brightness scene time, under the viewing condition that surround lighting is more weak, the just light leakage phenomena of easy perception liquid crystal, thus infringement image frame quality.
For this reason under wide-screen film display mode, need the backlight of backlight subarea corresponding for the black region in display screen to close, thus can light leakage phenomena be eliminated.But, although close backlight corresponding to black region, still there is the problem of certain light leak and the decline of black image contrast.
In order to avoid the generation of above problem, need now the brightness controlling backlight, but how to control the light leakage phenomena that backlight can avoid display screen, the image of display screen display is not had an impact again simultaneously, also there is no good method at present.
Summary of the invention
The embodiment of the present invention provides control method and the device of back light source brightness under a kind of wide-screen film display mode, in order to solve in prior art the light leakage phenomena of the backlight controlling display screen, simultaneously again not to the problem that the image of display screen display has an impact.
The embodiment of the present invention provides the control method of back light source brightness under a kind of wide-screen film display mode, and the method comprises:
When showing image to be displayed in display screen, determine in described display screen the backlight subarea needing to close backlight;
Determine described the first back light source brightness value needing the adjacent backlight subarea of the backlight subarea closing backlight;
Described first back light source brightness value being turned down, obtains the second back light source brightness value, when showing described image to be displayed by described display screen, the back light source brightness value of described adjacent backlight subarea being set to described second back light source brightness value.
Preferably, described any one backlight subarea corresponding to first area in display screen and second area, backlight subarea needing closedown backlight, described first area is pre-determine and be positioned at the region showing top, and described second area is pre-determine and the region be positioned at bottom display screen.
Preferably, described described first back light source brightness value to be turned down, obtains the second back light source brightness value, comprising:
According to the mapping relations between back light source brightness value and backlight weighted value, obtain the backlight weighted value corresponding with described first back light source brightness value;
Be multiplied with described first back light source brightness value by described backlight weighted value, obtain described second back light source brightness value, described backlight weighted value is greater than 0 and is less than 1.
Preferably, described when showing image to be displayed in display screen, determine in described display screen the backlight subarea needing to close backlight, comprising:
Determine whether show described image to be displayed with wide-screen film pattern in described display screen, if so, then when wide-screen film display mode display image, the backlight of backlight subarea corresponding for described first area is closed;
Determine whether show captions in described second area, if not, then the backlight of backlight subarea corresponding for described second area is closed.
Preferably, describedly determine whether show captions in described second area, comprising:
If at least a line image pixel of described second image, the grey decision-making at least including a pixel is the first grey decision-making, then determine described second area display captions, described first grey decision-making is 255.
The embodiment of the present invention provides the control device of back light source brightness under a kind of wide-screen film display mode, and this device comprises:
Backlight closes determining unit, during for showing image to be displayed in display screen, determines in described display screen the backlight subarea needing to close backlight;
Adjacent backlight subarea backlight determining unit, for determining described the first back light source brightness value needing the adjacent backlight subarea of the backlight subarea closing backlight;
Backlight control module, for described first back light source brightness value is turned down, obtaining the second back light source brightness value, when showing described image to be displayed by described display screen, the back light source brightness value of described adjacent backlight subarea being set to described second back light source brightness value.
Preferably, described any one backlight subarea corresponding to first area in display screen and second area, backlight subarea needing closedown backlight, described first area is pre-determine and be positioned at the region showing top, and described second area is pre-determine and the region be positioned at bottom display screen.
Preferably, described backlight control module specifically for:
According to the mapping relations between back light source brightness value and backlight weighted value, obtain the backlight weighted value corresponding with described first back light source brightness value;
Be multiplied with described first back light source brightness value by described backlight weighted value, obtain described second back light source brightness value, described backlight weighted value is greater than 0 and is less than 1.
Preferably, described backlight close determining unit specifically for:
Determine whether show described image to be displayed with wide-screen film pattern in described display screen, if so, then when wide-screen film display mode display image, the backlight of backlight subarea corresponding for described first area is closed;
Determine whether show captions in described second area, if not, then the backlight of backlight subarea corresponding for described second area is closed.
Preferably, described backlight close determining unit specifically for:
If at least a line image pixel of described second image, the grey decision-making at least including a pixel is the first grey decision-making, then determine described second area display captions, described first grey decision-making is 255.
According to the method that the invention process provides, when showing image to be displayed, if backlight subarea is in backlight closed condition, then the brightness of the backlight of the adjacent backlight subarea with this backlight subarea is adjusted, by the back light source brightness value of adjacent backlight subarea by being greater than the 0 backlight weighted value weighting being less than 1, the back light source brightness value of adjacent backlight subarea is diminished.The light leakage phenomena because the diffusion optical guide of the backlight in adjacent backlight subarea to the backlight subarea after backlight closedown causes can not only be eliminated by this method, promote the contrast of shown image in backlight subarea simultaneously.
Accompanying drawing explanation
Fig. 1 is the schematic diagram shown in display screen with black region image;
The control method process flow diagram of back light source brightness under a kind of wide-screen film display mode that Fig. 2 provides for the embodiment of the present invention;
The display screen dividing mode that Fig. 3 adopts for 1D or 1.5D local light regulating technology;
Fig. 4 is the schematic diagram that wide-screen film display mode image shows in display screen;
Fig. 5 is the schematic diagram of wide-screen film display mode image first area in display screen;
Fig. 6 is the schematic diagram of wide-screen film display mode image second area in display screen;
The control device structural drawing of back light source brightness under a kind of wide-screen film display mode that Fig. 7 provides for the embodiment of the present invention.
Embodiment
In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail, and obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Below in conjunction with Figure of description, the embodiment of the present invention is described in detail.
As shown in Figure 2, the control method process flow diagram of back light source brightness under a kind of wide-screen film display mode that the embodiment of the present invention provides, the method comprises:
Step 201: when showing image to be displayed in display screen, determines in described display screen the backlight subarea needing to close backlight;
Step 202: determine described the first back light source brightness value needing the adjacent backlight subarea of the backlight subarea closing backlight;
Step 203: described first back light source brightness value turned down, obtain the second back light source brightness value, when showing described image to be displayed by described display screen, is set to described second back light source brightness value by the back light source brightness value of described adjacent backlight subarea.
Display screen is when showing image, need the backlight that backlight module provides lasting, in the prior art, backlight is in long bright state often, the long bright meeting of backlight causes originally not needing the image of backlight picture contrast when showing to weaken, and the phenomenon such as light leak.
Generally by local light modulation (Local Dimming) technology, the backlight module of display screen is divided into multiple backlight module at present, the display screen area that each backlight module covers, be called backlight subarea, the backlight of each backlight subarea is controlled separately, does not need the backlight closing this region during backlight in this backlight subarea.
As shown in Figure 3, be the display screen dividing mode that 1D or 1.5D local light regulating technology adopts, in Fig. 3, display screen be divided into 16 backlight subarea, be wherein laterally divided into 8 equal portions, be longitudinally divided into 2 equal portions.Backlight module, while providing backlight, can regulate the brightness of backlight, and the brightness that backlight module can need according to image to be displayed regulates back light source brightness.Display screen in the embodiment of the present invention refers generally to LCD.
Backlight module, by receiving wide-screen film display mode switching command, determines whether the image shown in display screen shows with wide-screen film display mode.
Determine with wide-screen film display mode display image in the embodiment of the present invention in the following manner:
First, obtain image to be displayed, determine that described image to be displayed is presented at the first image of first area in display screen and is presented at the second image of second area in described display screen, described first area is pre-determine and be positioned at the region showing top, and described second area is pre-determine and the region be positioned at bottom display screen;
Then, the pixel gray level value of the pixel in described first image and described second image is obtained;
Finally, if the mean pixel grey decision-making of all pixels in described first image and described second image is all less than first threshold, then judge to show described image to be displayed with wide-screen film display mode; Or, if the mean pixel grey decision-making of all pixels is less than described first threshold in described first image, and the quantity proportion that the pixel gray level value in described second image is the pixel of 0 is greater than Second Threshold, then judge to show described image to be displayed with wide-screen film display mode.
As shown in Figure 4, when the image shown in display screen enters wide-screen film display mode, the distinctive fixed black region of wide-screen film display mode is formed at the top of display screen and bottom, be called first area and second area in embodiments of the present invention, first area is the fixed black region at display screen top under wide-screen film display mode, and second area is the fixed black region under wide-screen film display mode bottom display screen.Corresponding backlight subarea 1,8, first area, the corresponding backlight subarea 9,16 of second area, in order to reduce the impact of light leakage phenomena on these area images, backlight can be closed when showing image with wide-screen film display mode in these four backlight subarea.
After determining that in display screen, image to be displayed is wide-screen film display mode, close the backlight of part backlight subarea in display screen when showing the image of wide-screen film display mode.The backlight of which backlight subarea specifically will be closed in display wide-screen film display mode, below in two kinds of situation:
As shown in Figure 5, the first situation, if the pixel value of the pixel of the image shown in backlight subarea is all 0, namely all pixels are all black, and being so now does not need to open backlight, but due to the existence of noise, the pixel value of some pixel is not 0, so the average pixel value of the pixel of image to be displayed in backlight subarea is less than first threshold by the embodiment of the present invention, as not needing the condition of opening backlight, preferably, this first threshold value is between 0 to 20.
The second situation, without Subtitle Demonstration in the backlight subarea of second area.During according to display captions, in image, the feature of the grey decision-making of pixel determines whether have Subtitle Demonstration in the second area.As shown in Figure 6, when showing captions in the backlight subarea of second area, in backlight subarea, the grey decision-making of image to be displayed pixel is main with 0, and the grey decision-making also having partial pixel is the first grey decision-making, and the first grey decision-making is generally 255.For this reason, judge whether have Subtitle Demonstration in the second area in the following way: if at least a line image pixel of described second image, the grey decision-making at least including a pixel is the first grey decision-making, then determine described second area display captions, described first grey decision-making is 255.Be discontented with in the backlight subarea of second area and be enough to upper condition, just can determine without Subtitle Demonstration in this region, the backlight of this backlight subarea can be closed.
In order to improve the accuracy of judgement, can also on the basis that this image to be displayed meets above-mentioned condition, increase a Rule of judgment, that is: determine with this image to be displayed before N frame consecutive image show in display screen time, whether all show with wide-screen film display mode, if so, then determine that this image to be displayed is shown as wide-screen film display mode in display screen, preferential, N is at least greater than 10.
After determining the backlight subarea needing in wide-screen film display mode to close backlight, the impact that light leakage phenomena is brought just can be reduced in this backlight subarea when showing image, but thoroughly can not avoid light leakage phenomena, because the light of the backlight of its adjacent backlight subarea can be diffused into this backlight subarea, thus causes the problems such as light leakage phenomena.
Therefore in order to weaken the light diffusion of the adjacent backlight subarea of this backlight subarea, the back light source brightness value of the adjacent backlight subarea to the backlight subarea closing backlight is needed to regulate.Concrete, in display screen, image to be displayed is being defined as the display of wide-screen film display mode, and after being closed by the backlight of the first area of display screen and backlight subarea corresponding to second area, determine the first back light source brightness value of the adjacent backlight subarea of the first area of display screen and backlight subarea corresponding to second area; Described first back light source brightness value is turned down, obtains the second back light source brightness value; When showing described image to be displayed by display screen, the back light source brightness value of described adjacent backlight subarea is set to described second back light source brightness value.
By reducing the back light source brightness value of adjacent backlight subarea, can reduce and the light leak of the backlight subarea closing backlight is affected, but because the first back light source brightness value of adjacent backlight subarea when showing image goes to determine according to image pixel, if that the first back light source brightness value is adjusted is too low, the display effect of adjacent backlight subarea can be affected.By arranging the mode of backlight weighted value to each back light source brightness value, namely the first light-source brightness value of adjacent backlight subarea can be turned down, reduce the impact of the image on display simultaneously as far as possible.
Concrete, according to the mapping relations between back light source brightness value and backlight weighted value, obtain the backlight weighted value corresponding with described first back light source brightness value; Be multiplied with described first back light source brightness value by described backlight weighted value, obtain described second back light source brightness value, described backlight weighted value is greater than 0 and is less than 1.
When backlight weighted value is several between 0 to 1, the back light source brightness value after weighting can be less than former back light source brightness value.After after weighting, back light source brightness value diminishes, it also can diminish on impact when around spreading.Process the adjacent backlight subarea of the backlight subarea that backlight is closed by this method, the light that can weaken due to the backlight of adjacent backlight subarea spreads the light leakage phenomena brought.
Backlight weighted value also can for the number being greater than 1, and the back light source brightness value at this moment after weighting can become large, can strengthen the saturation degree of display image.
The mapping relations of back light source brightness value and backlight weighted value, can be realized by the artificial mode arranged, also can mode by experiment.Obtain the data of the light diffusion of backlight when different brightness value by experiment, the data according to light diffusion arrange a backlight weighted value to different back light source brightness values.
Concrete, the flow process of mode determination back light source brightness value by experiment and the mapping relations of backlight weighted value is as follows: under dark room conditions, only light the backlight of each backlight subarea successively, obtain the data of the light diffusion under different back light source brightness value, finally obtain the fitting function of the data that a back light source brightness value and light spread.According to fitting function, different backlight weighted value is arranged to different back light source brightness value, when light diffusibleness is large, what arranged by the backlight weighted value of the back light source brightness value of correspondence is less, light diffusibleness hour, what arranged by the backlight weighted value of the back light source brightness value of correspondence is comparatively large, is specifically as the criterion with actual measurement.
Based on identical technical conceive, the embodiment of the present invention also provides the control device of back light source brightness under a kind of wide-screen film display mode, and this device can perform said method embodiment.
As shown in Figure 7, the embodiment of the present invention provides the control device of back light source brightness under a kind of wide-screen film display mode, and this device comprises:
Backlight closes determining unit 701, during for showing image to be displayed in display screen, determines in described display screen the backlight subarea needing to close backlight;
Adjacent backlight subarea backlight determining unit 702, for determining described the first back light source brightness value needing the adjacent backlight subarea of the backlight subarea closing backlight;
Backlight control module 703, for described first back light source brightness value is turned down, obtaining the second back light source brightness value, when showing described image to be displayed by described display screen, the back light source brightness value of described adjacent backlight subarea being set to described second back light source brightness value.
Preferably, described any one backlight subarea corresponding to first area in display screen and second area, backlight subarea needing closedown backlight, described first area is pre-determine and be positioned at the region showing top, and described second area is pre-determine and the region be positioned at bottom display screen.
Preferably, described backlight control module 703 specifically for:
According to the mapping relations between back light source brightness value and backlight weighted value, obtain the backlight weighted value corresponding with described first back light source brightness value;
Be multiplied with described first back light source brightness value by described backlight weighted value, obtain described second back light source brightness value, described backlight weighted value is greater than 0 and is less than 1.
Preferably, described backlight close determining unit 701 specifically for:
Determine whether show described image to be displayed with wide-screen film pattern in described display screen, if so, then when wide-screen film display mode display image, the backlight of backlight subarea corresponding for described first area is closed;
Determine whether show captions in described second area, if not, then the backlight of backlight subarea corresponding for described second area is closed.
Preferably, described backlight close determining unit 701 specifically for:
If at least a line image pixel of described second image, the grey decision-making at least including a pixel is the first grey decision-making, then determine described second area display captions, described first grey decision-making is 255.
According to the method that the invention process provides, when showing image to be displayed, if backlight subarea is in backlight closed condition, then the brightness of the backlight of the adjacent backlight subarea with this backlight subarea is adjusted, by the back light source brightness value of adjacent backlight subarea by being greater than the 0 backlight weighted value weighting being less than 1, the back light source brightness value of adjacent backlight subarea is diminished.The light leakage phenomena because the diffusion optical guide of the backlight in adjacent backlight subarea to the backlight subarea after backlight closedown causes can not only be eliminated by this method, promote the contrast of shown image in backlight subarea simultaneously.
The present invention describes with reference to according to the process flow diagram of the method for the embodiment of the present invention, equipment (system) and computer program and/or block scheme.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block scheme and/or square frame and process flow diagram and/or block scheme and/or square frame.These computer program instructions can being provided to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computing machine or other programmable data processing device produce device for realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be loaded in computing machine or other programmable data processing device, make on computing machine or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computing machine or other programmable devices is provided for the step realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. the control method of back light source brightness under wide-screen film display mode, it is characterized in that, the method comprises:
When showing image to be displayed in display screen, determine in described display screen the backlight subarea needing to close backlight;
Determine described the first back light source brightness value needing the adjacent backlight subarea of the backlight subarea closing backlight;
Described first back light source brightness value being turned down, obtains the second back light source brightness value, when showing described image to be displayed by described display screen, the back light source brightness value of described adjacent backlight subarea being set to described second back light source brightness value.
2. the method for claim 1, it is characterized in that, described any one backlight subarea corresponding to first area in display screen and second area, backlight subarea needing closedown backlight, described first area is pre-determine and be positioned at the region showing top, and described second area is pre-determine and the region be positioned at bottom display screen.
3. method as claimed in claim 2, is characterized in that, describedly described first back light source brightness value is turned down, and obtains the second back light source brightness value, comprising:
According to the mapping relations between back light source brightness value and backlight weighted value, obtain the backlight weighted value corresponding with described first back light source brightness value;
Be multiplied with described first back light source brightness value by described backlight weighted value, obtain described second back light source brightness value, described backlight weighted value is greater than 0 and is less than 1.
4. method as claimed in claim 2, is characterized in that, described when showing image to be displayed in display screen, determines in described display screen the backlight subarea needing to close backlight, comprising:
Determine whether show described image to be displayed with wide-screen film pattern in described display screen, if so, then when wide-screen film display mode display image, the backlight of backlight subarea corresponding for described first area is closed;
Determine whether show captions in described second area, if not, then the backlight of backlight subarea corresponding for described second area is closed.
5. method as claimed in claim 4, is characterized in that, describedly determines whether show captions in described second area, comprising:
If at least a line image pixel of described second image, the grey decision-making at least including a pixel is the first grey decision-making, then determine described second area display captions, described first grey decision-making is 255.
6. the control device of back light source brightness under wide-screen film display mode, it is characterized in that, this device comprises:
Backlight closes determining unit, during for showing image to be displayed in display screen, determines in described display screen the backlight subarea needing to close backlight;
Adjacent backlight subarea backlight determining unit, for determining described the first back light source brightness value needing the adjacent backlight subarea of the backlight subarea closing backlight;
Backlight control module, for described first back light source brightness value is turned down, obtaining the second back light source brightness value, when showing described image to be displayed by described display screen, the back light source brightness value of described adjacent backlight subarea being set to described second back light source brightness value.
7. device as claimed in claim 6, it is characterized in that, described any one backlight subarea corresponding to first area in display screen and second area, backlight subarea needing closedown backlight, described first area is pre-determine and be positioned at the region showing top, and described second area is pre-determine and the region be positioned at bottom display screen.
8. device as claimed in claim 7, is characterized in that, described backlight control module specifically for:
According to the mapping relations between back light source brightness value and backlight weighted value, obtain the backlight weighted value corresponding with described first back light source brightness value;
Be multiplied with described first back light source brightness value by described backlight weighted value, obtain described second back light source brightness value, described backlight weighted value is greater than 0 and is less than 1.
9. device as claimed in claim 7, is characterized in that, described backlight close determining unit specifically for:
Determine whether show described image to be displayed with wide-screen film pattern in described display screen, if so, then when wide-screen film display mode display image, the backlight of backlight subarea corresponding for described first area is closed;
Determine whether show captions in described second area, if not, then the backlight of backlight subarea corresponding for described second area is closed.
10. device as claimed in claim 9, is characterized in that, described backlight close determining unit specifically for:
If at least a line image pixel of described second image, the grey decision-making at least including a pixel is the first grey decision-making, then determine described second area display captions, described first grey decision-making is 255.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410432142.5A CN104240650B (en) | 2014-08-28 | 2014-08-28 | The control method of back light source brightness and device under a kind of wide-screen film display pattern |
| US14/547,508 US10165217B2 (en) | 2014-08-28 | 2014-11-19 | Backlight source control method of display device, display device and storage medium |
| US16/206,254 US10965898B2 (en) | 2014-08-28 | 2018-11-30 | Backlight source control method of display device, display device and storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410432142.5A CN104240650B (en) | 2014-08-28 | 2014-08-28 | The control method of back light source brightness and device under a kind of wide-screen film display pattern |
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| CN104240650A true CN104240650A (en) | 2014-12-24 |
| CN104240650B CN104240650B (en) | 2016-08-24 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105895031A (en) * | 2015-12-08 | 2016-08-24 | 乐视致新电子科技（天津）有限公司 | Display light leakage improving method and device |
| CN109243384A (en) * | 2018-11-09 | 2019-01-18 | 京东方科技集团股份有限公司 | Show equipment and its driving method, driving device and computer-readable medium |
| CN111327948A (en) * | 2020-02-21 | 2020-06-23 | 深圳创维－Rgb电子有限公司 | Automatic matching method and device for movie image mode and computer readable storage medium |
| CN111341254A (en) * | 2018-12-19 | 2020-06-26 | 北京小米移动软件有限公司 | Brightness adjusting method and device of display screen |
| CN113990263A (en) * | 2021-10-26 | 2022-01-28 | Tcl华星光电技术有限公司 | Backlight processing method and device for display screen, storage medium and electronic equipment |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070182696A1 (en) * | 2006-02-09 | 2007-08-09 | Gigno Technology Co., Ltd. | Liquid crystal display device and controlling method thereof |
| CN101211544A (en) * | 2006-12-27 | 2008-07-02 | Lg.菲利浦Lcd株式会社 | Liquid crystal display device and method for driving the same |
| CN101222810A (en) * | 2008-01-18 | 2008-07-16 | 上海广电光电子有限公司 | Directly-down type LCD backlight source control device |
| CN101673521A (en) * | 2009-08-18 | 2010-03-17 | 北京巨数数字技术开发有限公司 | Liquid crystal display device and method for processing digital image signal |
| CN101751864A (en) * | 2008-12-19 | 2010-06-23 | 康佳集团股份有限公司 | Backlight control method, system and electronic display apparatus |
| US20110050760A1 (en) * | 2009-07-02 | 2011-03-03 | Panasonic Corporation | Image display apparatus and control apparatus and integrated circuit thereof |
| CN101989408A (en) * | 2010-11-29 | 2011-03-23 | 广州创维平面显示科技有限公司 | Light modulation method and system and television of bottom lighting LED (Light-Emitting Diode) back light module group |
| CN102016699A (en) * | 2008-06-27 | 2011-04-13 | 夏普株式会社 | Control device of liquid crystal display device, liquid crystal display device, method for controlling liquid crystal display device, program, and recording medium |
| CN102087818A (en) * | 2010-04-13 | 2011-06-08 | Tcl集团股份有限公司 | Liquid crystal display system |
| CN102213864A (en) * | 2010-04-09 | 2011-10-12 | 日立民用电子株式会社 | Image display device |
| CN102262866A (en) * | 2010-05-28 | 2011-11-30 | 日立民用电子株式会社 | Liquid crystal display device |
| CN102930831A (en) * | 2012-11-06 | 2013-02-13 | 青岛海信信芯科技有限公司 | Liquid crystal display screen image displaying method, device and liquid crystal display television |
-
2014
- 2014-08-28 CN CN201410432142.5A patent/CN104240650B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070182696A1 (en) * | 2006-02-09 | 2007-08-09 | Gigno Technology Co., Ltd. | Liquid crystal display device and controlling method thereof |
| CN101211544A (en) * | 2006-12-27 | 2008-07-02 | Lg.菲利浦Lcd株式会社 | Liquid crystal display device and method for driving the same |
| CN101222810A (en) * | 2008-01-18 | 2008-07-16 | 上海广电光电子有限公司 | Directly-down type LCD backlight source control device |
| CN102016699A (en) * | 2008-06-27 | 2011-04-13 | 夏普株式会社 | Control device of liquid crystal display device, liquid crystal display device, method for controlling liquid crystal display device, program, and recording medium |
| CN101751864A (en) * | 2008-12-19 | 2010-06-23 | 康佳集团股份有限公司 | Backlight control method, system and electronic display apparatus |
| US20110050760A1 (en) * | 2009-07-02 | 2011-03-03 | Panasonic Corporation | Image display apparatus and control apparatus and integrated circuit thereof |
| CN101673521A (en) * | 2009-08-18 | 2010-03-17 | 北京巨数数字技术开发有限公司 | Liquid crystal display device and method for processing digital image signal |
| CN102213864A (en) * | 2010-04-09 | 2011-10-12 | 日立民用电子株式会社 | Image display device |
| CN102087818A (en) * | 2010-04-13 | 2011-06-08 | Tcl集团股份有限公司 | Liquid crystal display system |
| CN102262866A (en) * | 2010-05-28 | 2011-11-30 | 日立民用电子株式会社 | Liquid crystal display device |
| CN101989408A (en) * | 2010-11-29 | 2011-03-23 | 广州创维平面显示科技有限公司 | Light modulation method and system and television of bottom lighting LED (Light-Emitting Diode) back light module group |
| CN102930831A (en) * | 2012-11-06 | 2013-02-13 | 青岛海信信芯科技有限公司 | Liquid crystal display screen image displaying method, device and liquid crystal display television |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105895031A (en) * | 2015-12-08 | 2016-08-24 | 乐视致新电子科技（天津）有限公司 | Display light leakage improving method and device |
| WO2017096785A1 (en) * | 2015-12-08 | 2017-06-15 | 乐视控股（北京）有限公司 | Method and apparatus for solving light leakage of display |
| CN109243384A (en) * | 2018-11-09 | 2019-01-18 | 京东方科技集团股份有限公司 | Show equipment and its driving method, driving device and computer-readable medium |
| US11195479B2 (en) | 2018-11-09 | 2021-12-07 | Boe Technology Group Co., Ltd. | Display device and method for driving the same, driving apparatus and computer-readable medium |
| CN111341254A (en) * | 2018-12-19 | 2020-06-26 | 北京小米移动软件有限公司 | Brightness adjusting method and device of display screen |
| CN111341254B (en) * | 2018-12-19 | 2021-06-15 | 北京小米移动软件有限公司 | Brightness adjusting method and device of display screen |
| CN111327948A (en) * | 2020-02-21 | 2020-06-23 | 深圳创维－Rgb电子有限公司 | Automatic matching method and device for movie image mode and computer readable storage medium |
| CN111327948B (en) * | 2020-02-21 | 2021-09-24 | 深圳创维－Rgb电子有限公司 | Automatic matching method and device for movie image mode and computer readable storage medium |
| CN113990263A (en) * | 2021-10-26 | 2022-01-28 | Tcl华星光电技术有限公司 | Backlight processing method and device for display screen, storage medium and electronic equipment |
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