CN101923823B - Method and device for adjusting image display - Google Patents
Method and device for adjusting image display Download PDFInfo
- Publication number
- CN101923823B CN101923823B CN2009101473410A CN200910147341A CN101923823B CN 101923823 B CN101923823 B CN 101923823B CN 2009101473410 A CN2009101473410 A CN 2009101473410A CN 200910147341 A CN200910147341 A CN 200910147341A CN 101923823 B CN101923823 B CN 101923823B
- Authority
- CN
- China
- Prior art keywords
- image
- gray
- different
- value
- pixel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention provides a method and a device for adjusting image display. The method comprises the following steps of: A. dividing an image to be displayed into a set number of subimages; B. respectively calculating pixel grayscale reference values of different subimages according to all pixel grayscale values contained in different subimages; C. confirming different expansion amounts corresponding to the pixel grayscale reference values of different subimages; and D. calculating all the pixel grayscale values contained in different subimages according to different confirmed expansion amounts to generate a new grayscale value to be displayed. The device comprises an image dividing unit (11), a grayscale mean value calculating unit 912), a grayscale storing unit (13), a grayscale expansion amount confirming unit (14) and a grayscale calculating unit (15). By adjusting image data, the invention realizes the effects of expanding grayscale data close to maximal luminance and shortening grayscale data close to minimal luminance, which is irrelevant to a backlight, thereby achieving the aim of improving picture quality in a way like improving contrast.
Description
Technical field
The present invention relates to the liquid crystal display-driving technical field, method of adjustment and adjusting gear that particularly a kind of image shows.
Technical background
At present; The method of improving image quality through adjustment brightness of image and contrast has a lot; Its main mode is: the gray scale summation according to all pixels of a two field picture is judged the brightness that the image diverse location need be adjusted, and controls the brightness of some backlights that said position is provided with again in view of the above.
For example; Application number is the method for 200710074948.1 disclosed a kind of liquid crystal display device backlight lightness of one Chinese patent application and contrast adjustment; Calculate the Luminance Distribution ratio of each pixel of a two field picture, calculate the backlight control coefficient according to this distribution proportion again and control the backlight of LCD relevant position.Also having application number in addition is that the one Chinese patent application of 200610086583.X discloses a kind of method that is used to control display device power; Come the contrast of analysis video signal through the average contrast who calculates the pixel of predetermined number among the LCD; And confirm to be included in the contrast adjustment value backlight of each LED in backlight, export different LED contrasts.
Hence one can see that, and two above-mentioned essences of an invention all are to realize the control to light source through the calculating to contrast backlight, thereby improve picture quality, and view data does not change.This has just caused suitable LCD screen kind scope problem of smaller, is only applicable to have the display of more backlight, and the backlight of diverse location needs independent driving circuits, realizes that like this cost is higher.And for lamp tube type liquid crystal display backlight, consider that the brightness of all fluorescent tubes generally all is same control from cost-effective angle, then can't adopt aforesaid way to carry out adjustment backlight.
Summary of the invention
In view of this; Fundamental purpose of the present invention is to provide a kind of method of adjustment and adjusting gear of image demonstration; Be implemented in backlight and irrespectively enlarge the gradation data that approaches high-high brightness; Dwindle the gradation data that approaches minimum brightness,, reach the purpose that improves image quality to be similar to the mode that improves contrast.
The method of adjustment that image provided by the invention shows comprises step:
A, will images displayed be divided into and set the quantity number of sub images;
B, each grey scale pixel value that comprises according to the different sub image calculate different sub-image pixels grayscale reference values respectively;
C, confirm the different propagations that different sub-image pixels grayscale reference values are corresponding;
The different propagations that D, basis are determined generate new gray-scale value to display with each grey scale pixel value computing that the different sub image comprises.
Hence one can see that; Mean value according to the gradation data of each pixel of every frame picture zones of different; The gradation data of each pixel in each zone is enlarged accordingly or dwindles, thereby can realize the mode that improves contrast to be similar to, reach the purpose that improves image quality.It is thus clear that this mode and backlight are irrelevant, improve problem so can solve the image quality of lamp tube type liquid crystal display backlight.
In the said method, it is characterized in that the said step that calculates different sub-image pixels grayscale reference values respectively of step B comprises:
The average gray that calculates each pixel that the different sub image comprised respectively is as the pixel grey scale reference value.
Hence one can see that, and the gray-scale value of each pixel that is comprised to the different sub image advances calculation, can farthest improve the contrast expressive force of whole picture.
In the said method, it is characterized in that the step of calculating the average gray of said each pixel comprises:
Choosing high-value value of averaging of setting figure place of the gray-scale value of each pixel calculates.
Hence one can see that, chooses high-value value of averaging of setting figure place of the gray-scale value of each pixel and calculate, and reduced the requirement to storage space, can save the hardware resource of computing.
In the said method, it is characterized in that said step C comprises:
Confirm the gray level that each sub-image pixels grayscale reference value is affiliated; Propagation according to gray level is corresponding is confirmed the pairing propagation of each number of sub images.
Hence one can see that, and the propagation corresponding according to each sub-image pixels grayscale level can be that the pixel of each subimage is distributed gray-scale value propagation immediate with it exactly, thereby make the bright part of image brighter, and dark part is darker.
In the said method, it is characterized in that said propagation comprises expansion multiple, spread function.
Hence one can see that, and the user can adopt dissimilar propagations as required, and is preferable, uses expansion multiple, specified portions gray scale section to changing insensitive gray scale section; The user can use spread function to the responsive gray scale section of grey scale change.
In the said method, it is characterized in that the said computing of step D comprises:
Each grey scale pixel value that the different sub image is comprised multiplies each other and rounding operation with corresponding different propagations.
Hence one can see that, and each grey scale pixel value that the different sub image is comprised multiplies each other with corresponding different propagations and rounding operation can be redistributed one for each pixel in the different sub image and can make contrast be similar to higher gray-scale value.
In the said method, it is characterized in that, further comprise:
Want the distance at images displayed center according to said subimage distance, the gray-scale value operation result is carried out weighted calculation generate new gray-scale value to display.
Hence one can see that, can adopt the change of weighting coefficient to gray-scale value, to realize the strengthening contrast away from the sprite of central area, makes this part image be able to contrast compensation.
In the said method, it is characterized in that, further comprise:
Want the distance at images displayed center according to said subimage distance, the brightness value of said each pixel of subimage is carried out weighted calculation generate new brightness value to display.
Hence one can see that, can adopt the change of weighting coefficient to brightness value, to realize the strengthening brightness away from the sprite of central area, makes this part image be able to luminance compensation.
In the said method, it is characterized in that said weighted calculation comprises:
The amount of institute's computing multiply by
or
wherein, said x is the distance at subimage range image center.
Hence one can see that; Adoptable weighting coefficient
or
are simple, under the prerequisite that does not influence arithmetic speed, have realized contrast, the luminance compensation of parts of images.
The adjusting gear that a kind of image provided by the invention shows comprises:
Image cutting unit (11) is used for and will images displayed be divided into setting quantity number of sub images;
Gray average computing unit (12), each grey scale pixel value that is used for comprising according to the different sub image respectively calculates different sub-image pixels grayscale reference values;
Gray scale storage unit (13) is used to store the corresponding different propagations of different pixels gray scale reference value;
The expansion of gradation amount is confirmed unit (14), is used for confirming the different propagations of the gray scale storage unit (13) that different sub-image pixels grayscale reference values that gray average computing unit (12) calculates are corresponding;
Gray scale arithmetic element (15) is used for respectively each grey scale pixel value computing that the different sub image comprises being generated new gray-scale value to display according to the different propagations of determining.
Hence one can see that, and the adjusting gear that this image shows can be realized the image quality improving that is similar to the picture contrast raising that the method for adjustment of above-mentioned image demonstration is brought fully, and can be optimized each unit in installing according to different needs.
Description of drawings
Fig. 1 is the synoptic diagram of the adjusting gear of image demonstration of the present invention;
Fig. 2 is the process flow diagram of the method for adjustment of image demonstration of the present invention.
Embodiment
Show the adjusting gear that a kind of image provided by the invention shows like Fig. 1, be used for changing the gray-scale value of each pixel of wanting display image, to improve the image quality that image shows, this device comprises:
Gray average computing unit 12, the grey scale pixel value that is used for image cutting unit 11 is divided each number of sub images that forms calculates respectively, obtains the different mean values of each pixel grey scale that the different sub image comprised.
Gray scale storage unit 13 stores the gray level of different gray scale sections and corresponding different propagation.Wherein propagation can be the expansion multiple, also can be spread function, will describe in detail at the back literary composition.
The expansion of gradation amount is confirmed unit 14, is used for confirming according to the corresponding different propagation of gray level of the different gray scale sections of gray scale storage unit 13 storage the pairing different propagations of different pixels average gray of each number of sub images that gray average computing unit 12 is calculated.
Gray scale arithmetic element 15; The corresponding different propagations of the different sub image that is used for the expansion of gradation amount is confirmed unit 14 to confirm carry out the new gray-scale value of computing each pixel of acquisition with the gray-scale value of different each pixel that subimage comprised, as each gray-scale value of each pixel of output image.
By last device, just can realize receiving each pixel of wanting images displayed and carry out exporting demonstration again after gray-scale value is handled, improve image contrast of display degree to be similar to, thereby promoted the image quality that shows.
The method of adjustment that shows referring to a kind of image shown in Fig. 2 describes in detail to the principle of work of said apparatus, may further comprise the steps:
In advance, the attainable gray level of liquid crystal display is divided some gray scale sections, and be that each gray scale section is distributed a propagation.
For example, be 8 liquid crystal display for using chip for driving input data, can realize 28 powers, i.e. 256 gray levels, promptly gray scale is 0～255.In this example, these 256 gray levels are divided into 7 gray scale sections, the corresponding propagation of each gray scale section.Computing through propagation and gradation of image makes that the bright place of liquid crystal display is brighter, the dark place is darker.Wherein propagation can be the expansion multiple, also can be spread function, and it is the example that propagation is divided gray scale that following table 1 shows with the expansion multiple:
| The gray scale section | Gray level | The expansion multiple |
| First section | 0～31 | 0.5 |
| Second section | 32～63 | 0.75 |
| The 3rd section | 64～95 | 0.875 |
| The 4th section | 96～159 | 1 |
| The 5th section | 160～191 | 1.05 |
| The 6th section | 192～223 | 1.08 |
| The 7th section | 224～255 (enlarge the back greater than 255 get 255) | 1.13 |
Table 1
Need to prove, when described propagation adopts spread function, can adopt different spread functions to realize the difference of different gray scale section grey scale change in each gray scale section.Because the dirigibility of function; Different gray scale sections also can adopt identical function; For example adopt the function of similar
, can realize the difference that different gray scale section corresponding grey scale change equally.Be understood that, also can expand multiple and propagation exists simultaneously, for example specified portions gray scale section is used expansion multiple, specified portions gray scale section like the user to changing insensitive gray scale section, like the user the responsive gray scale section of grey scale change is used spread function.
When liquid crystal display being carried out the image quality change, need receive and handle every two field picture, specifically may further comprise the steps:
Step 201: receive view data.
The present invention is that unit handles view data with the frame, and therefore reception and the buffer memory to view data also is that the unit carries out with the frame.
Be specially: when carrying out Data Receiving; After waiting for that picture signal is sent frame synchronizing signal; Begin the reception of a two field picture, deposit the gradation data of all pixels of this two field picture in frame memory according to transmission sequence, simultaneously the data of the previous frame image that deposited in are handled; When another two field picture arrived, the storage space position of previous frame view data deposited the data of this two field picture in storage, simultaneously the previous frame view data is handled.Therefore storer is always stored two adjacent two field pictures, and when a frame was stored, another frame carried out data processing.This is because according to image block treatment principle of the present invention, the processing sequence and the transmission sequence of each pixel of image are inconsistent, in real time data are not handled its also not appearance when certain pixel need be handled if do not store; If only store a frame, then the data of next frame image will override the data of previous frame image in the storer, might wash out also untreated data in the storer like this.
Step 202: will receive pending image, be divided into the plurality of sub image by image cutting unit 11.
In this example, be 64 equal-sized subimages with image division by image branch cut unit 11.For example; It for resolution 1920 * 1080 lcd tv display; Every two field picture (being the viewing area institute images displayed of liquid crystal panel) is divided into 64 equal number of sub images, and the sum of all pixels in each subimage is (3 * 1920/8) * (1080/8)=720 * 135.Being understood that, is 1366 * 768 o'clock for resolution, and then the sum of all pixels of each subimage is (3 * 1366/8) * (768/8)=513 * 96.To be that 1920 * 1080 LCD TV is that example describes with resolution in this example.
Step 203: for each plurality of sub image, gray average computing unit 12 calculates the grey scale pixel value of each number of sub images respectively, obtains the mean value of each image pixel that each number of sub images comprises respectively.
Promptly to 64 number of sub images,, obtain 64 mean values in this example to the value of the averaging calculating respectively of 720 * 135 pixel grey scales in each subimage.
Since this step calculate average gray be for confirm the propagation that will adopt; Therefore; Also can simplify the computing method of average gray, for example in this example, when adding up with calculating mean value for the gray scale of the pixel data in each subimage; For binary gray-scale value, the highest 3 that only get each pixel data are calculated.For example; Gray-scale value for 0～31; Be that the highest 3 bit data are 000 just when describing with scale-of-two; In like manner can release, the highest 3 bit data (scale-of-two) that gray-scale value is corresponding in seven gray scale sections shown in the table 1 are respectively 000,001,010,011,100,101,110 and 111, promptly 0,1,2,3,4,5,6 and 7.For example, be the pixel of 30 (decimal systems) for gray-scale value, when carrying out accumulation calculating mean value, only need get the highest 3 of this gray-scale value binary representation, promptly data 000, the addend that adds up as pixel data.The method equally also is applicable to the screen of 6 or 10 bit data.It is thus clear that this account form can reduce memory demand, thereby save hardware resource, also reduced operand.
Certainly, if hope that computational accuracy is higher, the data bits that above-mentioned example is got need be expanded to low level, and until whole figure places of data, 3 bit data of above-mentioned example will increase figure place.At this moment, the frame storage content that needs will enlarge, and operand also can increase.So, just need to increase relevant hardware resource.
In this example; The frame image data that prestores carries out adding up with calculating mean value of each sub-image pixels grayscale Value Data; Because it is the highest 3 that each pixel data only need be deposited; Can utilize original storer on liquid crystal panel control panel or sequential control (T-CON, the Timing Controller) plate fully like this.For example, originally on the T-CON plate be used for realizing that DCC (alleviating dynamic image hangover through overvoltage drive) changes memory of data, it can provide 4 for the data of each pixel, like this this storer gray value data of a two field picture that can be used for fully prestoring.
Step 204: according to said each sub-image pixels mean value, confirm the corresponding propagation of unit 14 definite said each number of sub images, as confirming that according to next shown in the table 1 the expansion multiple is as propagation by the expansion of gradation amount.
Step 205: the gray-scale value propagation corresponding with the different sub image of each pixel of different sub image carried out computing through gray scale arithmetic element 15 obtain new gray-scale value.
Wherein the computing described in this example be with each grey scale pixel values of 720 * 135 pixels in the different sub image with the propagation (like the expansion multiple) of corresponding subimage multiply each other; And carry out the round computing, obtain the gray-scale value of all pixels of two field picture.
Step 206: the new gray-scale value of each pixel that step 204 is calculated is as the actual output of this each grey scale pixel value of two field picture.
Visible by above embodiment, the present invention is equivalent to LCDs is divided into some equal-sized zones, the different sub image of each corresponding same two field picture in zone; Calculate the average of each grey scale pixel value of the corresponding different sub image in each zone; Corresponding according to the different sub image again different pixels gray scale average dwindles the gray-scale value of all pixels of zones of different subimage or enlarge the corresponding specific multiple of said gray scale average, thereby improves the corresponding brightness of higher gray scale and reduce the corresponding brightness of low GTG; Make bright zone brighter; Dark zone is darker, has improved the expressive force of image, has improved image quality.The present invention is applicable to any backlight mode, and is particularly preferable under the fluorescent tube backlight mode.
What explain is, the pact that the gray level shown in the table 1 is divided is many, the control that then lightness is changed accurate more.The subimage of image division is many more, and then the bright variation of image diverse location is accurate more, especially works as image division to the extreme, is each pixel, and then the present invention promptly becomes to each pixel, and this pixel grey scale is changed control.Can make to brightness of image control more accurately like this, but, hardware CPU, storer all had requirement because the judgement of gray level under need carrying out each pixel has increased operand.Have and to select according to hardware case.
In addition, can also carry out different weightings, for example can multiply by a different weighting coefficient, so that carry out luminance compensation away from the subimage of center according to the distance at said region distance display screen center to the zone of being divided.This is because when facing screen center with respect to the people, looks side ways more away from the regional vision of screen center more, can feel visually that thus the sprite away from the central area is dark more more, and this situation is particularly useful for the situation that display screen is a jumbotron.So can adopt the change of weighting coefficient,, make this part image be able to luminance compensation to realize strengthening brightness away from the sprite of central area to gray-scale value.For example, the weighting coefficient of being taken advantage of can for
Wherein x representes the distance of subimage center to the display screen center.Ought be judged as the subimage that is positioned at the display screen center like this, promptly during x=0, the weighting coefficient of then being taken advantage of is 1, promptly the new gray-scale value that is generated is no longer changed; Judge when subimage centre distance display screen centre distance is x, the weighting coefficient of being taken advantage of by
with the generation pixel new gray-scale value enlarges
again times wants the gray-scale displayed value as its pixel.Wherein n is the integer of setting.
Certainly; Above-mentionedly subimage away from the center is carried out luminance compensation also can directly control brightness value; Like this calculating of gray-scale value just is through with after step 205 is carried out, brightness of image multiply by weighting coefficient then can concurrent operation and output when calculating gray-scale value.Like this with respect to above-mentioned concerning gray-scale value multiply by weighting coefficient, owing to be therefore can shorten operation time to the concurrent operation of different parameters.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention.All within spirit of the present invention and principle, any modification of being made, be equal to replacement, improvement etc., for example above-mentioned
Formula also can adopt
All should be included within protection scope of the present invention Deng formula.
Claims (10)
1. the method for adjustment that image shows is characterized in that, comprises step:
A, will images displayed be divided into and set the quantity number of sub images;
B, each grey scale pixel value that comprises according to the different sub image calculate different sub-image pixels grayscale reference values respectively;
C, confirm the different propagations that different sub-image pixels grayscale reference values are corresponding;
The different propagations that D, basis are determined generate new gray-scale value to display with each grey scale pixel value computing that the different sub image comprises.
2. method according to claim 1 is characterized in that, the said step that calculates different sub-image pixels grayscale reference values respectively of step B comprises:
The average gray that calculates each pixel that the different sub image comprised respectively is as the pixel grey scale reference value.
3. method according to claim 2 is characterized in that, the step of calculating the average gray of said each pixel comprises:
Choosing high-value value of averaging of setting figure place of the gray-scale value of each pixel calculates.
4. method according to claim 3 is characterized in that, said step C comprises:
Confirm the gray level that each sub-image pixels grayscale reference value is affiliated;
Propagation according to gray level is corresponding is confirmed the pairing propagation of each number of sub images.
5. method according to claim 4 is characterized in that, said propagation comprises expansion multiple, spread function.
6. method according to claim 1 is characterized in that, the said computing of step D comprises:
Each grey scale pixel value that the different sub image is comprised multiplies each other and rounding operation with corresponding different propagations.
7. method according to claim 6 is characterized in that, further comprises:
Want the distance at images displayed center according to said subimage distance, the gray-scale value operation result is carried out weighted calculation generate new gray-scale value to display.
8. method according to claim 1 is characterized in that, further comprises:
Want the distance at images displayed center according to said subimage distance, the brightness value of said each pixel of subimage is carried out weighted calculation generate new brightness value to display.
9. according to claim 7 or 8 described methods, it is characterized in that said weighted calculation comprises:
The amount computed by multiplying
or
; wherein x is sub-image distance from the center of the image.
10. the adjusting gear that image shows is characterized in that, comprising:
Image cutting unit (11) is used for and will images displayed be divided into setting quantity number of sub images;
Gray average computing unit (12), each grey scale pixel value that is used for comprising according to the different sub image respectively calculates different sub-image pixels grayscale reference values;
Gray scale storage unit (13) is used to store the corresponding different propagations of different pixels gray scale reference value;
The expansion of gradation amount is confirmed unit (14), is used for confirming the different propagations of the gray scale storage unit (13) that different sub-image pixels grayscale reference values that gray average computing unit (12) calculates are corresponding;
Gray scale arithmetic element (15) is used for respectively each grey scale pixel value computing that the different sub image comprises being generated new gray-scale value to display according to the different propagations of determining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101473410A CN101923823B (en) | 2009-06-15 | 2009-06-15 | Method and device for adjusting image display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101473410A CN101923823B (en) | 2009-06-15 | 2009-06-15 | Method and device for adjusting image display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101923823A CN101923823A (en) | 2010-12-22 |
| CN101923823B true CN101923823B (en) | 2012-08-08 |
Family
ID=43338721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101473410A Active CN101923823B (en) | 2009-06-15 | 2009-06-15 | Method and device for adjusting image display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101923823B (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102347015B (en) * | 2011-09-15 | 2016-09-28 | 青岛海信电器股份有限公司 | Image brightness compensation method and device, liquid crystal TV set |
| CN102426514B (en) * | 2011-11-07 | 2014-08-20 | 广东威创视讯科技股份有限公司 | Synchronous displaying method and device for large-screen spliced wall |
| CN102903347B (en) * | 2012-10-29 | 2015-04-22 | 广东步步高电子工业有限公司 | Method and system for effectively solving problem of unclear display of liquid crystal display screen under sunshine |
| CN103177702B (en) * | 2013-03-04 | 2016-03-30 | 南京巨鲨显示科技有限公司 | There is display and the method thereof of GTG expanded function |
| GB201410635D0 (en) * | 2014-06-13 | 2014-07-30 | Univ Bangor | Improvements in and relating to the display of images |
| CN105654894B (en) * | 2014-11-12 | 2018-01-12 | 西安诺瓦电子科技有限公司 | LED bright chroma bearing calibrations |
| CN105118420B (en) * | 2015-09-28 | 2018-03-20 | 京东方科技集团股份有限公司 | Driving method, drive circuit and the display device of display panel |
| CN106708460B (en) * | 2015-11-13 | 2020-01-10 | 小米科技有限责任公司 | Method and device for displaying pixel points |
| CN106251830B (en) * | 2016-08-09 | 2018-10-23 | 昆山国显光电有限公司 | The restorative procedure and its device of the bad display of display |
| CN109472874B (en) | 2018-11-16 | 2022-05-31 | 京东方科技集团股份有限公司 | Display method, display device, VR display device and storage medium |
| CN109545153A (en) * | 2018-11-23 | 2019-03-29 | 深圳Tcl新技术有限公司 | Luminance regulating method, television set and the storage medium of liquid crystal display |
| CN110132823A (en) * | 2019-05-15 | 2019-08-16 | 林伟阳 | A kind of method for cell count based on template matching and lookup profile |
| CN110534061A (en) * | 2019-09-05 | 2019-12-03 | 合肥鑫晟光电科技有限公司 | Compensation method, compensation device and display device |
| CN111415292B (en) * | 2020-03-23 | 2022-07-26 | 厦门理工学院 | Method, device and equipment for improving refreshing rate of DMD gray imaging and storage medium |
| CN113327545B (en) * | 2021-08-04 | 2021-11-02 | 卡莱特云科技股份有限公司 | Method and device for improving picture contrast of LED display screen |
| CN113326016B (en) * | 2021-08-04 | 2021-10-22 | 卡莱特云科技股份有限公司 | Method and device for improving contrast of LED display screen and computer equipment |
| CN116153216A (en) * | 2021-11-23 | 2023-05-23 | 上海海思技术有限公司 | Picture display method and display device |
| CN114582279B (en) * | 2022-05-05 | 2022-07-22 | 卡莱特云科技股份有限公司 | Display screen contrast improving method and device based on error diffusion and electronic equipment |
| CN117495751B (en) * | 2023-11-02 | 2024-05-03 | 凯多智能科技(上海)有限公司 | Image brightness equalization processing method and device and electronic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1455382A (en) * | 2002-03-20 | 2003-11-12 | 株式会社日立制作所 | Display device |
| CN1551078A (en) * | 2003-02-10 | 2004-12-01 | ����Sdi��ʽ���� | Image display |
| CN1755760A (en) * | 2004-09-30 | 2006-04-05 | 株式会社东芝 | Video signal processor circuit and television receiver |
| WO2007030922A1 (en) * | 2005-09-12 | 2007-03-22 | Ifire Technology Corp. | Electroluminescent display using bipolar column drivers |
-
2009
- 2009-06-15 CN CN2009101473410A patent/CN101923823B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1455382A (en) * | 2002-03-20 | 2003-11-12 | 株式会社日立制作所 | Display device |
| CN1551078A (en) * | 2003-02-10 | 2004-12-01 | ����Sdi��ʽ���� | Image display |
| CN1755760A (en) * | 2004-09-30 | 2006-04-05 | 株式会社东芝 | Video signal processor circuit and television receiver |
| WO2007030922A1 (en) * | 2005-09-12 | 2007-03-22 | Ifire Technology Corp. | Electroluminescent display using bipolar column drivers |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101923823A (en) | 2010-12-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101923823B (en) | Method and device for adjusting image display | |
| CN102479496B (en) | Local dimming method and liquid crystal display | |
| CN105096875B (en) | A kind of GTG control method, GTG control device and LCDs | |
| JP5347100B2 (en) | Image display device capable of adjusting brightness and image display method | |
| EP3567578B1 (en) | Display device and driving method thereof | |
| CN101779231B (en) | Image display device and image display method | |
| CN101647056B (en) | Image processing device, image display device and image processing method | |
| CN102446494B (en) | Liquid crystal display and local dimming control method thereof | |
| EP3291219B1 (en) | Liquid crystal display device and method of performing local dimming of the same | |
| CN102074211A (en) | Liquid crystal display and method of local dimming thereof | |
| CN101017657A (en) | Image display device and image display method | |
| US20090002360A1 (en) | Liquid crystal display device and method for driving same | |
| JP2002023707A (en) | Display device | |
| CN102110419B (en) | Image display apparatus and control circuit of same | |
| KR20030073390A (en) | A liquid crystal display for improving dynamic contrast and a method for generating gamma voltages for the liquid crystal display | |
| CN103187031A (en) | Apparatus and method for displaying images and apparatus and method for processing images | |
| CN103946917A (en) | Display device control | |
| JP2010091782A (en) | Liquid crystal display device and stereoscopic image display device | |
| JP2011028107A (en) | Hold type image display device and control method thereof | |
| CN104933986A (en) | Display drive device, display drive method and display device | |
| CN105609032A (en) | Data clipping method and display device using the same | |
| US8497887B2 (en) | Display driving unit and method for using the same | |
| CN101346756B (en) | Gray-scale correcting device | |
| CN100461826C (en) | Image display method and system for plasma display panel | |
| CN113496682B (en) | Pixel data optimization method, pixel matrix driving device and display |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151207 Address after: 266101 Haier Industrial Park, 1 Haier Road, hi tech park, Laoshan Mountain, Shandong Patentee after: haier group corporation Patentee after: Qingdao Haier Electric Appliance Co., Ltd. Patentee after: QINGDAO HAIER MULTI-MEDIA CO., LTD. Address before: 266101 Haier Industrial Park, 1 Haier Road, hi tech park, Laoshan Mountain, Shandong Patentee before: haier group corporation Patentee before: Qingdao Haier Electric Appliance Co., Ltd. |