CN102651204A - 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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- CN102651204A CN102651204A CN2012100822740A CN201210082274A CN102651204A CN 102651204 A CN102651204 A CN 102651204A CN 2012100822740 A CN2012100822740 A CN 2012100822740A CN 201210082274 A CN201210082274 A CN 201210082274A CN 102651204 A CN102651204 A CN 102651204A
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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 technique for displaying field, particularly, relate to a kind of method, Apparatus and system of local dimming display image.
Background technology
That LCD has is in light weight, low radiation and advantage such as be easy to carry, and therefore is widely used as the display at terminals such as televisor and computer.
In the prior art; In order to reduce the energy consumption of backlight in the LCD, improve the quality of liquid crystal display displays image, people have developed local dimming (Local Dimming) technology; This local dimming technology at first is divided into several elementary areas with image according to matrix form; Calculate the mean flow rate of each elementary area in institute's display image then,, improve the contrast of image frame with the brightness of independent each elementary area of control.
Yet the LCD that adopts the local dimming technology is when display image, because the brightness of each elementary area in the image is high; And remainder is non-light zone; Backlight is to non-light zone output light, because the brightness between light zone and the non-light zone differs bigger, causes elementary area in the light zone to non-light zone light leak; Picture contrast is reduced, reduced the display quality of image.
Summary of the invention
For addressing the above problem, the present invention provides a kind of method, Apparatus and system of local dimming display image, is used for solving LCD easy problem that light leakage phenomena, image quality take place when display image of prior art local dimming.
For this reason, the present invention provides a kind of method of local dimming display image, comprising:
Receive the picture signal of a two field picture;
Resolve said picture signal, obtain the corresponding backlight control signal in light zone and black plug zone with said image;
Control said backlight according to said backlight control signal and carry out black plug, to show said image to said light zone output light with to said black plug zone.
Wherein, saidly control said backlight to said light zone output light and black plug is carried out in said black plug zone specifically comprise according to backlight control signal:
Before showing first Preset Time of a two field picture in the cycle, said light zone keeps the black plug state;
After first Preset Time, said backlight is to said light zone output light.
Wherein, in the cycle that shows a two field picture, said black plug zone keeps the black plug state.
Wherein, saidly control said backlight to said light zone output light and black plug is carried out in said black plug zone specifically comprise according to backlight control signal:
When showing second Preset Time of a two field picture in the cycle, receive the picture signal of next frame image.
Wherein, said black plug zone comprises:
Elementary area with said light zone adjacency.
The present invention also provides a kind of device of local dimming display image, and wherein, said device comprises:
Receiver module is used to receive the picture signal of a two field picture;
Parsing module is used to resolve said picture signal, obtains the corresponding backlight control signal in light zone and black plug zone with said image;
Control module is used for controlling said backlight according to said backlight control signal and carries out black plug to said light zone output light with to said black plug zone, to show said image.
Wherein, said control module also is used for:
Before showing first Preset Time of a two field picture in the cycle, control said light zone and keep the black plug state;
After first Preset Time, control said backlight to said light zone output light.
Wherein, said control module also is used for:
In the cycle that shows a two field picture, control said black plug zone and keep the black plug state.
Wherein, said receiver module also is used for:
When showing second Preset Time of a two field picture in the cycle, receive the picture signal of next frame image.
The present invention also provides a kind of system of local dimming display image, wherein, comprises the device of any one above-mentioned local dimming display image.
The present invention has following beneficial effect:
The method of local dimming display image provided by the invention; Black plug regional through the light that obtains image and the light area peripheral edge is regional, and the light zone output light with to image carries out black plug to the black plug zone of light area peripheral edge; Avoid peritropous non-light zone, light zone light leak; The smear phenomenon that reduces or occur when eliminating display image has increased the sharpness of image, has improved the display quality of image.
The Apparatus and system of local dimming display image provided by the invention also has above-mentioned beneficial effect.
Description of drawings
Fig. 1 is the process flow diagram of method first embodiment of local dimming display image of the present invention;
Fig. 2 is the structural representation of method second embodiment of local dimming display image of the present invention;
Fig. 3 is the light zone and the black plug regional distribution chart of image among method second embodiment of local dimming display image of the present invention;
Fig. 4 is the sequential chart of the method for local dimming display image among method second embodiment of local dimming display image of the present invention;
Fig. 5 is the structural representation of the device embodiment of local dimming display image of the present invention.
Embodiment
For making those skilled in the art understand technical scheme of the present invention better, be described in detail below in conjunction with method, the Apparatus and system of accompanying drawing to local dimming display image provided by the invention.
Fig. 1 is the process flow diagram of method first embodiment of local dimming display image of the present invention.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:
The picture signal of step 101, reception one two field picture.
In the present embodiment, be that example is introduced technical scheme with the LCD that adopts the local dimming technology, LCD is divided into M * N according to matrix form, and for example, 70 inches LCD can be divided into 16 * 12 elementary areas.When needs show a two field picture, at first receive the picture signal of a two field picture to display, comprise the information such as brightness, color of image in the picture signal, get into step 102 then.
Step 102, analysis diagram image signal obtain the corresponding backlight control signal in light zone and black plug zone with image.
In this step; The analysis diagram image signal with information such as the brightness of image in the picture signal that obtains receiving, color of image, obtains the light zone and the black plug zone of image; Obtain the light elementary area at place, light zone and the black plug elementary area at place, black plug zone; All images unit in the non-light of the prior art zone is carried out black plug, perhaps, avoid the light zone to the neighboring area light leak with carrying out black plug with the adjacent elementary area in light zone in the non-light zone.In the present embodiment, the black plug zone is that example is introduced technical scheme with the elementary area that includes only with light zone adjacency, and according to the light zone and black plug zone of image, the backlight control signal of backlight gets into step 103 then when calculating this image of demonstration then.
Step 103, carry out black plug according to backlight control signal control backlight to light zone output light and to the black plug zone, with display image.
In this step; According to the on off state of controlling each luminescence unit in the backlight control signal control backlight and brightness thereof etc.; To the light of image zone output light, the black plug elementary area at place, black plug zone is carried out black plug, avoid the image quality decrease that causes owing to the elementary area light leak in the high peritropous non-light of the light elementary area zone of regional luminance; To increase the sharpness and the contrast of image, improve the quality of image.
In the present embodiment; Black plug regional through the light that obtains image and the light area peripheral edge is regional, and the light zone output light with to image carries out black plug to the black plug zone of light area peripheral edge; Avoid peritropous non-light zone, light zone light leak; The smear phenomenon that reduces or occur when eliminating display image has increased the sharpness of image, has improved the display quality of image.
Fig. 2 is the structural representation of method second embodiment of local dimming display image of the present invention; Fig. 3 is the sequential chart of the method for local dimming display image among method second embodiment of local dimming display image of the present invention for the light zone and the black plug regional distribution chart of image among method second embodiment of local dimming display image of the present invention, Fig. 4.As shown in Figure 2, the flow process of the method for present embodiment local dimming display image specifically comprises the steps:
The picture signal of step 201, reception one two field picture.
In the present embodiment, be that example is introduced technical scheme with the LCD that adopts the local dimming technology, the display frequency of image was 60 frame/seconds, and the display cycle T of each two field picture is 1/60s, is about 16ms.Before showing a two field picture, at first receive the picture signal of image to display, comprise the information such as brightness, color of image in the picture signal, get into step 202 then.
In this step; The analysis diagram image signal; Obtain the light zone and the black plug zone of image; Obtain the included elementary area of light included elementary area in zone and black plug zone, as shown in Figure 3, the black plug elementary area 301 at place, black plug zone is distributed in the periphery of place, light zone light elementary area 302; The light zone of the image that obtains according to parsing and black plug zone, the backlight control signal of backlight gets into step 203 then when calculating this image of demonstration.
In this step, as shown in Figure 4, in the cycle T that shows a two field picture; The black plug zone keeps the black plug state always, and before first preset time t 1 in the cycle T that shows a two field picture, the light zone equally also keeps the black plug state; When arriving first preset time t 1, get into step 204.
In practical application, the cycle T that shows a two field picture is 16ms, and first preset time t 1 can be set at 1/180s, and t1 is about 5.6ms; Preceding 5.6ms at the cycle 16ms that shows a two field picture; The light zone equally also keeps the black plug state, through black plug is carried out in the light zone, to reach the effect that increases the display image totalframes; Smear phenomenon when reduction or removal of images show improves image quality.
In this step, when first preset time t 1, each light elementary area 301 output lights in the light zone; With display image on display screen; Simultaneously, the black plug elementary area 302 in the black plug zone still keeps the black plug state, has both avoided light elementary area 301 to black plug elementary area 302 light leaks; Increase the sharpness and the contrast of display image again, improved image quality.
In the practical application; During second preset time t 2 in showing the cycle T of a two field picture; Can receive the picture signal of next frame image, with information such as the brightness that in time parses the next frame image, colors, second preset time t 2 can be set at the last 1/240s in the cycle T; 1/240s is about 4.2ms, promptly receives the picture signal of next frame image in the moment of 16-4.2=11.8ms.
In the present embodiment, carry out black plug earlier through light zone to image, and then the output light; To reach the effect that increases the display image totalframes; Reduce or the smear phenomenon of removal of images when showing, each black plug elementary area of light area peripheral edge is carried out black plug, avoid the high peritropous black plug elementary area of the light elementary area light leak of brightness; Increase the sharpness and the contrast of image, improved the display quality of image.
Fig. 5 is the structural representation of the device embodiment of local dimming display image of the present invention.As shown in Figure 5; The device of present embodiment local dimming display image comprises: receiver module 501, parsing module 502 and control module 503; Receiver module 501 is used to receive the picture signal of a two field picture, and parsing module 502 is used for the analysis diagram image signal, obtains the corresponding backlight control signal in light zone and black plug zone with image; Control module 503 is used for carrying out black plug according to backlight control signal control backlight to light zone output light with to the black plug zone, to demonstrate distinct image.
In the present embodiment; It is regional with the black plug of the light zone that obtains image and light area peripheral edge to parse picture signal through parsing module; Come according to the light zone output light of backlight control signal through control module image; Black plug is carried out in black plug zone to the light area peripheral edge, avoids the peritropous non-light of the high light elementary area of brightness zone light leak, the smear phenomenon that occurs when reduction or elimination display image; Increase the contrast and the sharpness of image, improved the display quality of image.
Further, when showing second Preset Time of a two field picture in the cycle, receiver module 501 receives the picture signal of next frame images.Control module 503 also was used for before first Preset Time that shows a two field picture cycle; Control light zone keeps the black plug state; After first Preset Time; The control backlight is exported light to said light zone, and is showing a two field picture in the cycle, and control black plug zone keeps the black plug state always.
The present invention also provides a kind of system of local dimming display image; Device comprising any one above-mentioned local dimming display image; To avoid the high peritropous black plug elementary area of the light elementary area light leak of brightness; The smear phenomenon that reduces or occur when eliminating display image has increased the sharpness of image, has improved the display quality of image.
It is understandable that above embodiment only is the illustrative embodiments that adopts for principle of the present invention is described, yet the present invention is not limited thereto.For the one of ordinary skilled in the art, under the situation that does not break away from spirit of the present invention and essence, can make various modification and improvement, these modification also are regarded as protection scope of the present invention with improving.
Claims (10)
1. the method for a local dimming display image is characterized in that comprising:
Receive the picture signal of a two field picture;
Resolve said picture signal, obtain the corresponding backlight control signal in light zone and black plug zone with said image;
Control said backlight according to said backlight control signal and carry out black plug, to show said image to said light zone output light with to said black plug zone.
2. the method for local dimming display image according to claim 1 is characterized in that, saidly controls said backlight to said light zone output light and black plug is carried out in said black plug zone specifically comprise according to backlight control signal:
Before showing first Preset Time of a two field picture in the cycle, said light zone keeps the black plug state;
After first Preset Time, said backlight is to said light zone output light.
3. the method for local dimming display image according to claim 1 is characterized in that, in the cycle that shows a two field picture, said black plug zone keeps the black plug state.
4. the method for local dimming display image according to claim 1 is characterized in that, saidly controls said backlight to said light zone output light and black plug is carried out in said black plug zone specifically comprise according to backlight control signal:
When showing second Preset Time of a two field picture in the cycle, receive the picture signal of next frame image.
5. according to the method for any described local dimming display image of claim 1-4, it is characterized in that said black plug zone comprises:
Elementary area with said light zone adjacency.
6. the device of a local dimming display image is characterized in that comprising:
Receiver module is used to receive the picture signal of a two field picture;
Parsing module is used to resolve said picture signal, obtains the corresponding backlight control signal in light zone and black plug zone with said image;
Control module is used for controlling said backlight according to said backlight control signal and carries out black plug to said light zone output light with to said black plug zone, to show said image.
7. the device of local dimming display image according to claim 6 is characterized in that, said control module also is used for:
Before showing first Preset Time of a two field picture in the cycle, control said light zone and keep the black plug state;
After first Preset Time, control said backlight to said light zone output light.
8. the device of local dimming display image according to claim 6 is characterized in that, said control module also is used for:
In the cycle that shows a two field picture, control said black plug zone and keep the black plug state.
9. the device of local dimming display image according to claim 6 is characterized in that, said receiver module also is used for:
When showing second Preset Time of a two field picture in the cycle, receive the picture signal of next frame image.
10. the system of a local dimming display image is characterized in that, comprises the device of described any one local dimming display image of claim 6-9.
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 |
Applications Claiming Priority (1)
| 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 |
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| CN102651204A true CN102651204A (en) | 2012-08-29 |
| CN102651204B CN102651204B (en) | 2014-12-17 |
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| CN201210082274.0A Active CN102651204B (en) | 2012-03-26 | 2012-03-26 | Method, device and system for displaying images through regional dimming |
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| WO (1) | WO2013143277A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2013143277A1 (en) * | 2012-03-26 | 2013-10-03 | 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 |
| 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 |
| WO2019085023A1 (en) * | 2017-10-31 | 2019-05-09 | 武汉华星光电技术有限公司 | Method and system for improving ghosting in display picture |
| 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 |
| CN114170974A (en) * | 2021-12-02 | 2022-03-11 | 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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| WO2019085023A1 (en) * | 2017-10-31 | 2019-05-09 | 武汉华星光电技术有限公司 | Method and system for improving ghosting in display picture |
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| 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 |
| CN114170974A (en) * | 2021-12-02 | 2022-03-11 | 深圳创维新世界科技有限公司 | Black insertion optimization method, virtual reality device and readable storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013143277A1 (en) | 2013-10-03 |
| CN102651204B (en) | 2014-12-17 |
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