CN109272964B - Method and device for eliminating ghost shadow of monochrome display - Google Patents
Method and device for eliminating ghost shadow of monochrome display Download PDFInfo
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- CN109272964B CN109272964B CN201811383047.5A CN201811383047A CN109272964B CN 109272964 B CN109272964 B CN 109272964B CN 201811383047 A CN201811383047 A CN 201811383047A CN 109272964 B CN109272964 B CN 109272964B
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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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- 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
- G09G2320/0257—Reduction of after-image effects
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Abstract
The invention discloses a method and a device for eliminating ghost shadow of a monochromatic display, wherein the method comprises the following steps: receiving RGB signals of a monochrome display; relocating the RGB signals; and correcting the repositioned RGB signals and outputting the corrected RGB signals. The invention fully utilizes the characteristics of the liquid crystal distribution of the monochromatic display, not only effectively eliminates the problems of afterimages and smear, but also ensures the normal display brightness and improves the overall display quality.
Description
Technical Field
The invention relates to a method for processing ghost shadows of a display, in particular to a method and a device for eliminating ghost shadows of a monochromatic display.
Background
With the great popularity of liquid crystal displays, display devices in various industries are completely replaced by liquid crystal displays. However, due to the principle of the liquid crystal display, when the same picture is displayed for too long time, the charged ions in the liquid crystal are adsorbed at the two ends of the upper glass and the lower glass to form a built-in electric field, and the ions are not released immediately after the picture is switched, so that the liquid crystal molecules do not rotate to the corresponding angle immediately to form the display ghost phenomenon, which seriously affects the user experience, and particularly easily causes the misdiagnosis of a doctor when the medical display has ghost.
The existing ways to solve the ghost also have many, the most common is frame frequency frame interpolation technology, some is to interpolate a black or gray image for each frame of 120HZ, and let the liquid crystal molecules open into an unstable built-in electric field to eliminate the ghost phenomenon of the display, but this technology may cause the brightness of the display image to decrease or display some interference because the image information of the display image in a certain transient state is changed, and the displayed content cannot be expressed normally.
Disclosure of Invention
The present invention is directed to overcome the deficiencies of the prior art and to provide a method and apparatus for eliminating ghost shadow of a monochrome display.
In order to achieve the purpose, the invention adopts the following technical scheme: a method for eliminating ghosting of a monochrome display, the method comprising:
receiving RGB signals of a monochrome display;
relocating the RGB signals;
and correcting the repositioned RGB signals and outputting the corrected RGB signals.
The further technical scheme is as follows: the step of relocating the RGB signals specifically includes the steps of:
calculating the total frame number of the RGB signals;
a cycle is performed for continuous three frame signals among the total number of frames of the RGB signals.
The further technical scheme is as follows: in the step of circulating for one time continuous three frame signals in the total frame number of the RGB signals, the circulating rule is to convert the 0 th frame signal into RGB; the 1 st frame is converted into BRG; frame 2 is converted to GBR, frame 3 is converted to RGB, and so on for all frames.
The further technical scheme is as follows: the step of correcting and outputting the repositioned RGB signals specifically comprises the following steps:
acquiring RGB signal energy intensity;
setting brightness information when the display signal is output;
the electric field strength of each component signal in the RGB signal is adjusted according to the luminance information.
An apparatus for removing ghosting of a monochrome display, the apparatus comprising a receiving unit, a repositioning unit, and a LUT unit;
the receiving unit is used for receiving RGB signals of a monochrome display;
the repositioning unit is used for repositioning the RGB signals;
and the LUT unit is used for correcting the repositioned RGB signals and outputting the corrected RGB signals.
The further technical scheme is as follows: the relocation unit comprises a calculation module and a circulation module;
the calculating module is used for calculating the total frame number of the RGB signals;
and the circulating module is used for circulating continuous three frame signals in the total frame number of the RGB signals once.
The further technical scheme is as follows: the LUT unit comprises an acquisition module, a setting module and an adjusting module;
the acquisition module is used for acquiring the RGB signal energy intensity;
the setting module is used for setting brightness information when the display signal is output;
and the adjusting module is used for adjusting the electric field intensity of each component signal in the RGB signals according to the brightness information.
Compared with the prior art, the invention has the beneficial effects that: the method and the device for eliminating the ghost shadow of the monochromatic display reposition the RGB signals, and then calibrate the repositioned signals. The scheme makes full use of the distribution characteristics of the liquid crystal of the monochromatic display, effectively eliminates the problems of ghost shadow and smear shadow, ensures normal display brightness and improves the overall display quality.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more apparent, the following detailed description will be given of preferred embodiments.
Drawings
FIG. 1 is a flow chart of an embodiment of a method for removing ghosting in a monochrome display according to the present invention;
FIG. 2 is a flow chart of the repositioning in an embodiment of a method for removing ghosting in a monochrome display according to the present invention;
FIG. 3 is a flowchart of the correction in an embodiment of the method for removing afterimages of a monochrome display according to the present invention;
FIG. 4 is a block diagram of an apparatus for removing afterimage of a monochrome display according to an embodiment of the present invention;
FIG. 5 is a block diagram of a repositioning unit in an embodiment of an apparatus for removing afterimages of a monochrome display according to the present invention;
FIG. 6 is a block diagram of an LUT in an embodiment of the apparatus for removing ghosting in a monochrome display of the invention.
Detailed Description
In order to more fully understand the technical content of the present invention, the technical solution of the present invention will be further described and illustrated with reference to the following specific embodiments, but not limited thereto.
It is to be understood that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity/action/object from another entity/action/object without necessarily requiring or implying any actual such relationship or order between such entities/actions/objects.
It should be further understood that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
As shown in fig. 1-3, the present invention provides a method for removing afterimages of a monochrome display, the method comprising:
s10, receiving RGB signals of a monochrome display;
s20, repositioning the RGB signals;
and S20, correcting the repositioned RGB signals and outputting the corrected RGB signals.
Specifically, the RGB signal of the monochrome display is characterized by an equipartition point of equal-energy equal-intensity of each component signal, for example, the signal intensity value of the R channel is 50, and the signal intensity values of the G channel and the B channel are also 50. Therefore, the signal of the signal R channel can be the same in the display result of the G and B channels, and the RGB signals can be switched arbitrarily. When the liquid crystal display passes through the LUT202 after relocation, as the three RGB sub-pixel points are energy-equal points, DDL of each gray level RGB must be distinguished when GAMMA is corrected, so that the purposes of displaying different component signals but no change of final output brightness intensity can be achieved.
Further, step S20 specifically includes the following steps:
s201, calculating the total frame number of the RGB signals;
s202, a cycle is performed for three consecutive frame signals in the total number of frames of RGB signals.
Specifically, the cyclic rule is to convert the 0 th frame signal into RGB; the 1 st frame is converted into BRG; frame 2 is converted to GBR, frame 3 is converted to RGB, and so on for all frames. In this embodiment, the loop is performed every three frames, and in other embodiments, the loop may be performed every four frames or every five frames.
Further, step S30 specifically includes the following steps:
s301, acquiring RGB signal energy intensity;
s302, brightness information when the display signal is output is set;
and S303, adjusting the electric field intensity of each component signal in the RGB signals according to the brightness information.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention
The invention also provides a device for eliminating the afterimage of the monochrome display, which corresponds to the method for eliminating the afterimage of the monochrome display in the embodiment. As shown in fig. 4-6, the apparatus comprises a receiving unit 1, a relocation unit 2 and a LUT unit 3;
a receiving unit 1 for receiving RGB signals of a monochrome display;
a relocating unit 2 for relocating the RGB signals;
and the LUT unit 3 is used for correcting the repositioned RGB signals and outputting the corrected RGB signals.
Specifically, the RGB signal of the monochrome display is characterized by an equipartition point of equal-energy equal-intensity of each component signal, for example, the signal intensity value of the R channel is 50, and the signal intensity values of the G channel and the B channel are also 50. Therefore, the signal of the signal R channel can be the same in the display result of the G and B channels, and the RGB signals can be switched arbitrarily. When the liquid crystal display passes through the LUT202 after relocation, as the three RGB sub-pixel points are energy-equal points, DDL of each gray level RGB must be distinguished when GAMMA is corrected, so that the purposes of displaying different component signals but no change of final output brightness intensity can be achieved.
Further, the relocation unit 2 comprises a calculation module 21 and a loop module 22;
a calculating module 21 for calculating the total frame number of the RGB signals;
and a circulation module 22 for circulating the continuous three frame signals in the total frame number of the RGB signals once.
Specifically, the cyclic rule is to convert the 0 th frame signal into RGB; the 1 st frame is converted into BRG; frame 2 is converted to GBR, frame 3 is converted to RGB, and so on for all frames. In this embodiment, the loop is performed every three frames, and in other embodiments, the loop may be performed every four frames or every five frames.
Further, the LUT unit 3 includes an obtaining module 31, a setting module 32, and an adjusting module 33;
an obtaining module 31, configured to obtain RGB signal energy intensity;
a setting module 32, configured to set brightness information when the display signal is output;
and an adjusting module 33, configured to adjust the electric field strength of each component signal in the RGB signal according to the luminance information.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the above-mentioned apparatus may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical functional division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another device, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present invention may be implemented in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The technical contents of the present invention are further illustrated by the examples only for the convenience of the reader, but the embodiments of the present invention are not limited thereto, and any technical extension or re-creation based on the present invention is protected by the present invention. The protection scope of the invention is subject to the claims.
Claims (5)
1. A method for removing ghosting from a monochrome display, the method comprising:
receiving RGB signals of a monochrome display;
relocating the RGB signals;
correcting the repositioned RGB signals and outputting the corrected RGB signals;
the step of correcting and outputting the repositioned RGB signals specifically comprises the following steps:
acquiring RGB signal energy intensity;
setting brightness information when the display signal is output;
the electric field strength of each component signal in the RGB signal is adjusted according to the luminance information.
2. The method according to claim 1, wherein the step of repositioning the RGB signals comprises the following steps:
calculating the total frame number of the RGB signals;
a cycle is performed for continuous three frame signals among the total number of frames of the RGB signals.
3. The method of claim 1, wherein in the step of cycling through three consecutive frame signals of the total number of frames of RGB signals, the rule of cycling is to convert the 0 th frame signal into RGB; the 1 st frame is converted into BRG; frame 2 is converted to GBR, frame 3 is converted to RGB, and so on for all frames.
4. An apparatus for removing ghosting of a monochrome display, the apparatus comprising a receiving unit, a repositioning unit, and a LUT unit;
the receiving unit is used for receiving RGB signals of a monochrome display;
the repositioning unit is used for repositioning the RGB signals;
the LUT unit is used for correcting and outputting the repositioned RGB signals;
the LUT unit comprises an acquisition module, a setting module and an adjusting module;
the acquisition module is used for acquiring the RGB signal energy intensity;
the setting module is used for setting brightness information when the display signal is output;
and the adjusting module is used for adjusting the electric field intensity of each component signal in the RGB signals according to the brightness information.
5. The apparatus according to claim 4, wherein the relocation unit comprises a calculation module and a loop module;
the calculating module is used for calculating the total frame number of the RGB signals;
and the circulating module is used for circulating continuous three frame signals in the total frame number of the RGB signals once.
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| CN201811383047.5A CN109272964B (en) | 2018-11-20 | 2018-11-20 | Method and device for eliminating ghost shadow of monochrome display |
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| US8300037B2 (en) * | 2007-08-02 | 2012-10-30 | Sharp Kabushiki Kaisha | Liquid crystal display device and method and circuit for driving the same |
| JP5299741B2 (en) * | 2007-10-24 | 2013-09-25 | Ｎｌｔテクノロジー株式会社 | Display panel control device, liquid crystal display device, electronic apparatus, display device driving method, and control program |
| JP2009139774A (en) * | 2007-12-10 | 2009-06-25 | Hitachi Displays Ltd | Display device |
| JP2011123084A (en) * | 2008-04-03 | 2011-06-23 | Konica Minolta Medical & Graphic Inc | Image display system and image display program |
| TWI541782B (en) * | 2010-07-02 | 2016-07-11 | 半導體能源研究所股份有限公司 | Liquid crystal display device |
| CN104821160B (en) * | 2015-05-12 | 2017-09-12 | 深圳市华星光电技术有限公司 | Method for controlling image to show |
| CN106297705A (en) * | 2016-08-31 | 2017-01-04 | 南京巨鲨显示科技有限公司 | A kind of for eliminating medical display ghost the device and method maintained voluntarily |
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Address after: 518000 floor 15, building 6, Hengda fashion Huigu building (East District), Fulong Road, Henglang community, Dalang street, Longhua District, Shenzhen, Guangdong Patentee after: SHENZHEN BEACON DISPLAY TECHNOLOGY Co.,Ltd. Address before: 518055 12th floor, building B1, Nanshan wisdom Park, 1001 Xueyuan Avenue, Nanshan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN BEACON DISPLAY TECHNOLOGY Co.,Ltd. |