CN102651204B - Method, device and system for displaying images through regional dimming - Google Patents
Method, device and system for displaying images through regional dimming Download PDFInfo
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- CN102651204B CN102651204B CN201210082274.0A CN201210082274A CN102651204B CN 102651204 B CN102651204 B CN 102651204B CN 201210082274 A CN201210082274 A CN 201210082274A CN 102651204 B CN102651204 B CN 102651204B
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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
- G09G3/3426—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines the different display panel areas being distributed in two dimensions, e.g. matrix
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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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0238—Improving the black level
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
- G09G2320/0646—Modulation of illumination source brightness and image signal correlated to each other
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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
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention provides a method, a device and a system for displaying images through regional dimming, wherein the method comprises the steps of: receiving image signals of a frame image; analyzing the image signals so as to obtain backlight control signals corresponding to a black insertion region and a bright light region of the image; and controlling a backlight source to output bright light to the bright light region and to carry out black insertion on the black insertion region for displaying the image according to the backlight control signals. In the embodiment provided by the invention, through obtaining the black insertion region on the periphery of the bright light region and the bright light region of the image, the bright light is output to the bright light region of the image, the black insertion is carried out the black insertion region on the periphery of the bright light region, the light leakage from the bright light region to a peripheral non-bright-light region is avoided, the image trailing phenomenon during image display is reduced or eliminated, the image definition is enhanced, and the image display quality is improved.
Description
Technical field
The present invention relates to the technical field of display, particularly, relate to method, the Apparatus and system of a kind of local dimming display image.
Background technology
Liquid crystal display has lightweight, Low emissivity and the advantage such as to be easy to carry, and is therefore widely used as the display of the terminal such as televisor and computer.
In the prior art, in order to reduce the energy consumption of backlight in liquid crystal display, improve the quality of liquid crystal display display image, people have developed local dimming (Local Dimming) technology, this local dimming technology is divided into several elementary areas first by image according to matrix form, then calculate the mean flow rate of each elementary area in shown image, with the independent brightness controlling each elementary area, improve the contrast of image frame.
But, adopt the liquid crystal display of local dimming technology when showing image, because the brightness of each elementary area in image is high, and remainder is non-light region, backlight does not export light to non-light region, because the brightness difference between light region and non-light region is larger, causes the elementary area in light region to non-light region light leak, picture contrast is reduced, reduces the display quality of image.
Summary of the invention
For solving the problem, the invention provides method, the Apparatus and system of a kind of local dimming display image, easily there is the problem of light leakage phenomena, poor image quality in the liquid crystal display for solving local dimming in prior art when showing image.
For this reason, the invention provides the method for a kind of local dimming display image, comprising:
Receive the picture signal of a two field picture;
Resolve described picture signal, obtain the backlight control signal corresponding with the light region of described image and black plug region;
Control backlight according to described backlight control signal to export light to described light region and carry out black plug to described black plug region, to show described image.
Wherein, control described backlight according to described backlight control signal described light region exported to light and carry out black plug to described black plug region specifically to comprise:
Before the first Preset Time in the display one two field picture cycle, described light region keeps black plug state;
After the first Preset Time, described backlight exports light to described light region.
Wherein, in the cycle of display one two field picture, described black plug region keeps black plug state.
Wherein, control described backlight according to described backlight control signal described light region exported to light and carry out black plug to described black plug region specifically to comprise:
During the second Preset Time in the display one two field picture cycle, receive the picture signal of next frame image.
Wherein, described black plug region comprises:
With the elementary area of described light area adjacency.
The present invention also provides a kind of local dimming to show the device of image, and wherein, described device comprises:
Receiver module, for receiving the picture signal of a two field picture;
Parsing module, for resolving described picture signal, obtains the backlight control signal corresponding with the light region of described image and black plug region;
Control module, exports light to described light region for controlling backlight according to described backlight control signal and carries out black plug to described black plug region, to show described image.
Wherein, described control module also for:
Before the first Preset Time in the display one two field picture cycle, control described light region and keep black plug state;
After the first Preset Time, control described backlight and light is exported to described light region.
Wherein, described control module also for:
In the cycle of display one two field picture, control described black plug region and keep black plug state.
Wherein, described receiver module also for:
During the second Preset Time in the display one two field picture cycle, receive the picture signal of next frame image.
The present invention also provides a kind of local dimming to show the system of image, wherein, comprises the device of above-mentioned any one local dimming display image.
The present invention has following beneficial effect:
The method of local dimming display image provided by the invention, by obtaining the light region of image and the black plug region of light area peripheral edge, to export light to the light region of image, black plug is carried out to the black plug region of light area peripheral edge, avoid peritropous non-light region, light region light leak, the motion blur phenomenon occurred when reducing or eliminate display image, adds the sharpness of image, improves the display quality of image.
The Apparatus and system of local dimming display image provided by the invention also has above-mentioned beneficial effect.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of method first embodiment of local dimming of the present invention display image;
Fig. 2 is the structural representation of method second embodiment of local dimming of the present invention display image;
Fig. 3 is light region and the black plug regional distribution chart of image in method second embodiment of local dimming of the present invention display image;
Fig. 4 is the sequential chart of the method for local dimming display image in method second embodiment of local dimming of the present invention display image;
Fig. 5 is the structural representation of the device embodiment of local dimming of the present invention display image.
Embodiment
For making those skilled in the art understand technical scheme of the present invention better, below in conjunction with accompanying drawing, the method for local dimming provided by the invention display image, Apparatus and system are described in detail.
Fig. 1 is the process flow diagram of method first embodiment of local dimming of the present invention display image.As shown in Figure 1, the flow process of the method for the local dimming display image in the present embodiment specifically comprises the steps:
Step 101, receive the picture signal of a two field picture.
In the present embodiment, to adopt the liquid crystal display of local dimming technology to introduce technical scheme, liquid crystal display is divided into M × N according to matrix form, and such as, the liquid crystal display of 70 inches can be divided into 16 × 12 elementary areas.When needs display one two field picture, first receive the picture signal of a two field picture to display, picture signal comprises the information such as brightness, color of image, then enters step 102.
Step 102, analysis diagram image signal, obtain the backlight control signal corresponding with the light region of image and black plug region.
In this step, analysis diagram image signal, to obtain the information such as brightness of image, color of image in the picture signal that receives, obtain light region and the black plug region of image, obtain the light elementary area at place, light region and the black plug elementary area at place, black plug region, all images unit in non-light region of the prior art is carried out black plug, or elementary area adjacent with light region in non-light region is carried out black plug, avoid light region to neighboring area light leak.In the present embodiment, black plug region, to only include with the elementary area of light area adjacency to introduce technical scheme, then according to light region and the black plug region of image, calculates the backlight control signal of backlight during this image of display, then enters step 103.
Step 103, control backlight according to backlight control signal light and carry out black plug to black plug region, to show image is exported to light region.
In this step, the on off state of each luminescence unit in backlight and brightness thereof etc. are controlled according to controlling backlight control signal, light is exported to the light region of image, black plug is carried out to the black plug elementary area at place, black plug region, avoid due to the elementary area light leak in the peritropous non-light region of light elementary area that regional luminance is high and the image quality decrease caused, to increase sharpness and the contrast of image, improve the quality of image.
In the present embodiment, by obtaining the light region of image and the black plug region of light area peripheral edge, to export light to the light region of image, black plug is carried out to the black plug region of light area peripheral edge, avoid peritropous non-light region, light region light leak, the motion blur phenomenon occurred when reducing or eliminate display image, adds the sharpness of image, improves the display quality of image.
Fig. 2 is the structural representation of method second embodiment of local dimming of the present invention display image, Fig. 3 is light region and the black plug regional distribution chart of image in method second embodiment of local dimming of the present invention display image, and Fig. 4 is the sequential chart of the method for local dimming display image in method second embodiment of local dimming of the present invention display image.As shown in Figure 2, the flow process of the method for the present embodiment local dimming display image specifically comprises the steps:
Step 201, receive the picture signal of a two field picture.
In the present embodiment, to adopt the liquid crystal display of local dimming technology to introduce technical scheme, the display frequency of image is 60 frames/second, and the display cycle T of each two field picture is 1/60s, is about 16ms.Before display one two field picture, first receive the picture signal of image to display, picture signal comprises the information such as brightness, color of image, then enters step 202.
Step 202, analysis diagram image signal, obtain the backlight control signal corresponding with the light region of image and black plug region.
In this step, analysis diagram image signal, obtain light region and the black plug region of image, obtain elementary area included by light region and the elementary area included by black plug region, as shown in Figure 3, the black plug elementary area 301 at place, black plug region is distributed in the periphery of place, light region light elementary area 302; According to light region and the black plug region of resolving the image obtained, calculate the backlight control signal of backlight during this image of display, then enter step 203.
Step 203, before the first Preset Time, light region and black plug region keep black plug state.
In this step, as shown in Figure 4, in the cycle T of display one two field picture, black plug region keeps black plug state always, and before the first preset time t 1 in the cycle T of display one two field picture, light region equally also keeps black plug state, during Deng arrival the first preset time t 1, enter step 204.
In actual applications, the cycle T showing a two field picture is 16ms, and the first preset time t 1 can be set as 1/180s, and t1 is about 5.6ms; 5.6ms before the cycle 16ms of display one two field picture, light region equally also keeps black plug state, by carrying out black plug to light region, to reach the effect increasing display image totalframes, motion blur phenomenon when reduction or removal of images display, improves image quality.
Step 204, after the first Preset Time, export light to light region show image, maintenance black plug state is continued in black plug region.
In this step, when the first preset time t 1, light is exported to each light elementary area 301 in light region, to show image on the display screen, meanwhile, the black plug elementary area 302 in black plug region still keeps black plug state, has both avoided light elementary area 301 to black plug elementary area 302 light leak, turn increase sharpness and the contrast of display image, improve image quality.
In practical application, during the second preset time t 2 in the cycle T of display one two field picture, the picture signal of next frame image can be received, to parse the information such as brightness, color of next frame image in time, second preset time t 2 can be set as the last 1/240s in cycle T, 1/240s is about 4.2ms, namely in the picture signal of the reception next frame image of 16-4.2=11.8ms.
In the present embodiment, by first carrying out black plug to the light region of image, and then export light, to reach the effect increasing display image totalframes, motion blur phenomenon when reduction or removal of images display, carries out black plug to each black plug elementary area of light area peripheral edge, the light elementary area peritropous black plug elementary area light leak avoiding brightness high, add sharpness and the contrast of image, improve the display quality of image.
Fig. 5 is the structural representation of the device embodiment of local dimming of the present invention display image.As shown in Figure 5, the device of the present embodiment local dimming display image comprises: receiver module 501, parsing module 502 and control module 503, receiver module 501 is for receiving the picture signal of a two field picture, parsing module 502 is for analysis diagram image signal, obtain the backlight control signal corresponding with the light region of image and black plug region, control module 503 exports light and carry out black plug to black plug region, to demonstrate image clearly for controlling backlight according to backlight control signal to light region.
In the present embodiment, picture signal is parsed with the black plug region in the light region and light area peripheral edge that obtain image by parsing module, come to export light according to backlight control signal to the light region of image by control module, black plug is carried out to the black plug region of light area peripheral edge, the light elementary area avoiding brightness high peritropous non-light region light leak, the motion blur phenomenon occurred when reducing or eliminate display image, add contrast and the sharpness of image, improve the display quality of image.
Further, during the second Preset Time in the display one two field picture cycle, receiver module 501 receives the picture signal of next frame image.Control module 503 is also for before the first Preset Time in the display one two field picture cycle, control light region and keep black plug state, after the first Preset Time, control backlight and light is exported to described light region, and in the display one two field picture cycle, control black plug region and keep black plug state always.
The present invention also provides a kind of local dimming to show the system of image, comprising the device of any one above-mentioned local dimming display image, with the light elementary area peritropous black plug elementary area light leak avoiding brightness high, the motion blur phenomenon occurred when reducing or eliminate display image, add the sharpness of image, improve the display quality of image.
Be understandable that, the illustrative embodiments that above embodiment is only used to principle of the present invention is described and adopts, but the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.
Claims (8)
1. a method for local dimming display image, is characterized in that comprising:
Receive the picture signal of a two field picture;
Resolve described picture signal, obtain the backlight control signal corresponding with the light region of described image and black plug region;
Control backlight according to described backlight control signal to export light to described light region and carry out black plug to described black plug region, to show described image;
Control described backlight according to described backlight control signal described light region exported to light and carry out black plug to described black plug region specifically to comprise:
Before the first Preset Time in the display one two field picture cycle, described light region keeps black plug state;
After the first Preset Time, described backlight exports light to described light region.
2. the method for local dimming display image according to claim 1, it is characterized in that, in the cycle of display one two field picture, described black plug region keeps black plug state.
3. the method for local dimming according to claim 1 display image, is characterized in that, controls described backlight described light region exported to light and carry out black plug to described black plug region specifically comprise according to described backlight control signal:
During the second Preset Time in the display one two field picture cycle, receive the picture signal of next frame image.
4. the method for the local dimming display image according to claim 1-3 any one, it is characterized in that, described black plug region comprises:
With the elementary area of described light area adjacency.
5. a device for local dimming display image, is characterized in that comprising:
Receiver module, for receiving the picture signal of a two field picture;
Parsing module, for resolving described picture signal, obtains the backlight control signal corresponding with the light region of described image and black plug region;
Control module, exports light to described light region for controlling backlight according to described backlight control signal and carries out black plug to described black plug region, to show described image;
Described control module also for:
Before the first Preset Time in the display one two field picture cycle, control described light region and keep black plug state;
After the first Preset Time, control described backlight and light is exported to described light region.
6. the device of local dimming according to claim 5 display image, is characterized in that, described control module also for:
In the cycle of display one two field picture, control described black plug region and keep black plug state.
7. the device of local dimming according to claim 5 display image, is characterized in that, described receiver module also for:
During the second Preset Time in the display one two field picture cycle, receive the picture signal of next frame image.
8. a system for local dimming display image, is characterized in that, comprises the device of the local dimming display image of claim 5-7 described in any one.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210082274.0A CN102651204B (en) | 2012-03-26 | 2012-03-26 | Method, device and system for displaying images through regional dimming |
| PCT/CN2012/083329 WO2013143277A1 (en) | 2012-03-26 | 2012-10-22 | Method, device and system for displaying images through regional dimming |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210082274.0A CN102651204B (en) | 2012-03-26 | 2012-03-26 | Method, device and system for displaying images through regional dimming |
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| CN102651204A CN102651204A (en) | 2012-08-29 |
| CN102651204B true CN102651204B (en) | 2014-12-17 |
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| WO (1) | WO2013143277A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102651204B (en) * | 2012-03-26 | 2014-12-17 | 京东方科技集团股份有限公司 | Method, device and system for displaying images through regional dimming |
| CN107101129A (en) * | 2017-05-12 | 2017-08-29 | 合肥京东方显示光源有限公司 | Compensation method and its system, colour atla, backlight to sample backlight light-leaking area |
| CN107731200B (en) * | 2017-10-31 | 2019-09-17 | 武汉华星光电技术有限公司 | Improve the method and system of ghost in display picture |
| CN109188778A (en) * | 2018-10-31 | 2019-01-11 | 京东方科技集团股份有限公司 | Backlight module, display device and its driving method |
| CN111798805A (en) * | 2020-07-29 | 2020-10-20 | 北京显芯科技有限公司 | Backlight processing system, apparatus, method, backlight driver and storage medium |
| CN114170974B (en) * | 2021-12-02 | 2023-04-07 | 深圳创维新世界科技有限公司 | Black insertion optimization method, virtual reality device and readable storage medium |
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| CN101373585A (en) * | 2007-08-20 | 2009-02-25 | 旭曜科技股份有限公司 | Display drive method and driver using the same |
| KR20090044292A (en) * | 2007-10-31 | 2009-05-07 | 삼성전자주식회사 | Display device and driving method thereof |
| JP4792054B2 (en) * | 2008-03-24 | 2011-10-12 | 株式会社東芝 | 3D image display device, 3D image display method, and liquid crystal display |
| KR101362771B1 (en) * | 2008-09-17 | 2014-02-14 | 삼성전자주식회사 | Apparatus and method for displaying stereoscopic image |
| JP5176896B2 (en) * | 2008-11-19 | 2013-04-03 | 株式会社Ｊｖｃケンウッド | Liquid crystal display |
| JP2010175913A (en) * | 2009-01-30 | 2010-08-12 | Hitachi Ltd | Image display apparatus |
| US9336728B2 (en) * | 2010-05-14 | 2016-05-10 | Stmicroelectronics, Inc. | System and method for controlling a display backlight |
| CN102651204B (en) * | 2012-03-26 | 2014-12-17 | 京东方科技集团股份有限公司 | Method, device and system for displaying images through regional dimming |
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| WO2013143277A1 (en) | 2013-10-03 |
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