CN105872512B - There is the method for colour cast after being worked long hours using gamma amendment LCD TV - Google Patents
There is the method for colour cast after being worked long hours using gamma amendment LCD TV Download PDFInfo
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- CN105872512B CN105872512B CN201610316690.0A CN201610316690A CN105872512B CN 105872512 B CN105872512 B CN 105872512B CN 201610316690 A CN201610316690 A CN 201610316690A CN 105872512 B CN105872512 B CN 105872512B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/73—Colour balance circuits, e.g. white balance circuits or colour temperature control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/485—End-user interface for client configuration
- H04N21/4854—End-user interface for client configuration for modifying image parameters, e.g. image brightness, contrast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/81—Monomedia components thereof
- H04N21/8166—Monomedia components thereof involving executable data, e.g. software
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- General Engineering & Computer Science (AREA)
- Software Systems (AREA)
- Human Computer Interaction (AREA)
- Liquid Crystal Display Device Control (AREA)
- Picture Signal Circuits (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
There is the method for colour cast after being worked long hours the invention discloses a kind of utilization gamma amendment LCD TV, be related to LCD TV display field.This method comprises the following steps：After liquid crystal display is required according to conventional heat engine, gamma debugging is carried out, gamma 1 is generated；Liquid crystal display x, y chromaticity coordinates decline after a threshold value, carry out gamma debugging, generate gamma 2；After liquid crystal display x, y chromaticity coordinates tends towards stability, gamma debugging is carried out, gamma 3 is generated；3 gammas for debugging completion are incorporated into TV software；When colour cast problem occurs in LCD TV, by TV software automatic switchover gamma, or by user's manual switching gamma, colour cast is corrected.The present invention is transferred to correct colour cast by built-in gamma, makes the effect finally shown more natural true to nature on the basis of any cost is not increased.
Description
Technical field
The present invention relates to LCD TV display field, and in particular to when one kind utilizes gamma amendment LCD TV long
Between work after there is the method for colour cast.
Background technology
As LCD TV market competition grows in intensity, each liquid crystal display producer is in order to reduce cost so that liquid crystal display is in work
The problem of making easily the reduction of chromaticity coordinates occur after a period of time, so as to cause LCD TV colour cast.The problem also causes liquid crystal
TV produces color rendition degree and declined, and makes the color that user watches at home greatly different with natural colour gap, so as to cause visitor
Query of the family to brand of television.The decline of this chromaticity coordinates of liquid crystal display is irreversible dress, but Consumer's Experience is supreme, the problem
It must solve.
The content of the invention
The purpose of the present invention is that the deficiency being directed in above-mentioned background technology utilizes gamma amendment liquid crystal there is provided one kind
There is the method for colour cast in TV after working long hours, on the basis of available liquid crystal TV does not increase any cost, pass through gamma
Curve corrects the colour cast problem that LCD TV occurs because working long hours.
In order to reach above-mentioned technique effect, the present invention takes following technical scheme：Utilize gamma amendment liquid crystal electricity
Depending on occurring the method for colour cast after working long hours, comprise the following steps：
After a, liquid crystal display are required according to conventional heat engine, gamma debugging is carried out, gamma 1 is generated；
B, liquid crystal display x, y chromaticity coordinates decline after a threshold value, carry out gamma debugging, generate gamma 2；
After c, liquid crystal display x, y chromaticity coordinates tend towards stability, gamma debugging is carried out, gamma 3 is generated；
D, 3 gammas for completing debugging are incorporated into TV software；
E, LCD TV work in user family, when colour cast problem occurs in LCD TV：Cut automatically by TV software
Gamma is changed, colour cast is corrected；Or by user's manual switching gamma, correct colour cast.
Preferably, threshold value described in step b is 0.01, i.e., after x, y chromaticity coordinates decline 0.01, carry out gamma tune
Examination, generates gamma 2.
Preferably, after x, y chromaticity coordinates decline 0.02 in step c, liquid crystal display tends towards stability.
Preferably, TV software automatic switchover gamma in step e, comprises the following steps：LCD TV software is set
Determine working time statistical function；Started working when LCD TV is first powered in user family timing；TV Default Value
LCD TV acquiescence calls gamma 1；Working time was had reached after n hours, and liquid crystal display chromaticity coordinates declines threshold value, electricity
Automatically switch depending on software and transfer gamma 2, repair colour cast；Working time was had reached after m hours, and liquid crystal display chromaticity coordinates becomes
In stabilization, TV software, which automatically switches, transfers gamma 3, repairs colour cast；The m>n.
Preferably, user's manual switching gamma in rapid e, comprises the following steps：When LCD TV start-up operation,
Acquiescence calls gamma 1；When work a period of time there is colour cast, user manually selects gamma 2, repairs colour cast；
Work on a period of time need finishing colour cast when, user manually selects gamma 3.
The present invention compared with prior art, with following beneficial effect：The present invention is not increasing the basis of any cost
On, LCD TV is corrected using gamma and is worked long hours the colour cast problem occurred.When LCD TV is working long hours
Afterwards, chromaticity coordinates declines, when obvious deviation occurs in colour temperature color, can transfer to complete amendment by built-in gamma, make most
The effect of display is more natural true to nature eventually, improves Consumer's Experience effect, lifting brand of television image.
Brief description of the drawings
Fig. 1 is TV software automatic switchover gamma flow chart of the present invention；
Fig. 2 is user's manual switching gamma flow chart of the present invention.
Embodiment
With reference to embodiments of the invention, the invention will be further elaborated.
Embodiment：
After a period of operation, it is very fast that liquid crystal display occurs that x, y chromaticity coordinates decline to LCD TV；Work on, liquid crystal
Screen chromaticity coordinates still can slowly decline, and finally tend towards stability.Assuming that liquid crystal display chromaticity coordinates standard is respectively for x, y chromaticity coordinates：
0.280,0.290, if x, y chromaticity coordinates decline 0.01, the colour temperature of liquid crystal display will improve 2000K or so；If x, y chromaticity coordinates
Decline 0.02, the colour temperature of liquid crystal display will improve more than 4000K.The liquid crystal display worked long hours, such as occur chromaticity coordinates decline compared with
Many, obvious colour cast will occur for the image that user watches at home.Liquid crystal display working time is divided into three periods for this：
Initial stage, mid-term changes phase, stabilization sub stage in later stage.
Initial stage：Liquid crystal display carries out gamma debugging, generation after according to conventional heat engine requirement work certain time
Gamma 1.
Mid-term changes phase：LCD TV works on, one threshold value G of liquid crystal display chromaticity coordinates rapid decrease.When screen color
Coordinate declines after threshold value G (after such as x, y chromaticity coordinates decline 0.01), and gamma debugging is carried out again, generates gamma 2.
Stabilization sub stage in later stage：LCD TV works on, and liquid crystal display chromaticity coordinates will slowly decline, and finally tend towards stability.
After declining 0.02 such as x, y chromaticity coordinates, liquid crystal display chromaticity coordinates is tended towards stability, and gamma debugging is carried out again, generates gamma
3。
3 gammas are incorporated into LCD TV software, complete to produce and sell.LCD TV is sent in user family,
With working long hours for LCD TV, LCD TV will appear from colour cast.At this time, it may be necessary to which corresponding gamma is transferred to come
Correct the colour cast of LCD TV.Specifically there are following two methods：
The first, as shown in figure 1, TV software automatically switches：LCD TV software set working time statistical function, when
Started working when TV is first powered in user family timing.TV Default Value LCD TV acquiescence calls gamma
1；Working time was had reached after n hours, and liquid crystal display chromaticity coordinates declines threshold value G (after such as x, y chromaticity coordinates decline 0.01), electricity
Automatically switch depending on software and transfer gamma 2；Working time time cumulation reaches after m hours that liquid crystal display chromaticity coordinates tends to be steady
Fixed, TV software, which automatically switches, transfers gamma 3；The m>n.Second, as shown in Fig. 2 user's manual switching：In liquid
Manual switching gamma option is set in brilliant TV menu, when user has found that deviation occurs in TV colour temperature color, can be passed through
The option selects correspondence gamma to correct TV colour cast problem.Specifically, when LCD TV is started working, acquiescence is called
Gamma 1；When work a period of time there is colour cast, user manually selects gamma 2, repairs colour cast；Work on
When a period of time needs finishing colour cast, user manually selects gamma 3.
The liquid crystal display working time is divided into three periods by the present invention：Initial stage, mid-term changes phase, later stage are stable
Stage, and debug the gamma in liquid crystal display correspondence stage；Automatically switched by TV software or user's manual switching gamma
Two methods of curve carry out transferring for gamma, realize using amendment colour cast problem.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, but the invention is not limited in this.For those skilled in the art, the essence of the present invention is not being departed from
In the case of refreshing and essence, various changes and modifications can be made therein, and these variations and modifications are also considered as protection scope of the present invention.
Claims (5)
1. there is the method for colour cast after being worked long hours using gamma amendment LCD TV, comprise the following steps：
After a, liquid crystal display are required according to conventional heat engine, gamma debugging is carried out, gamma 1 is generated；
B, liquid crystal display x, y chromaticity coordinates decline after a threshold value, carry out gamma debugging, generate gamma 2；
After c, liquid crystal display x, y chromaticity coordinates tend towards stability, gamma debugging is carried out, gamma 3 is generated；
D, 3 gammas for completing debugging are incorporated into TV software；
E, LCD TV work in user family, when colour cast problem occurs in LCD TV：Automatically switched by TV software
Gamma, corrects colour cast；Or by user's manual switching gamma, correct colour cast.
2. there is the method for colour cast after working long hours in utilization gamma amendment LCD TV according to claim 1,
It is characterized in that：Threshold value described in step b is 0.01.
3. there is the side of colour cast after working long hours in utilization gamma amendment LCD TV according to claim 1 or 2
Method, it is characterised in that：After x, y chromaticity coordinates decline 0.02 in step c, liquid crystal display chromaticity coordinates tends towards stability.
4. there is the method for colour cast after working long hours in utilization gamma amendment LCD TV according to claim 1,
Characterized in that, TV software automatic switchover gamma in step e, comprises the following steps：LCD TV software set works
Time statistical function；Started working when LCD TV is first powered in user family timing；TV Default Value liquid crystal electricity
Gamma 1 is called depending on acquiescence；Working time was had reached after n hours, and liquid crystal display chromaticity coordinates declines threshold value, TV software
Gamma 2 is transferred in automatic switchover, corrects colour cast；Working time was had reached after m hours, and liquid crystal display chromaticity coordinates tends towards stability,
TV software, which automatically switches, transfers gamma 3, corrects colour cast；The m>n.
5. there is the side of colour cast after working long hours in utilization gamma amendment LCD TV according to claim 1
Method, it is characterised in that user's manual switching gamma in step e, comprises the following steps：When LCD TV is started working, write from memory
Recognize and call gamma 1；When work a period of time there is colour cast, user manually selects gamma 2, corrects colour cast；After
When continuous work needs amendment colour cast for a period of time, user manually selects gamma 3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2016100821464 | 2016-02-05 | ||
| CN201610082146 | 2016-02-05 |
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| CN105872512B true CN105872512B (en) | 2017-07-28 |
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| CN106683625A (en) * | 2016-12-15 | 2017-05-17 | 惠科股份有限公司 | Grayscale curve correcting and adjusting method, terminal and display device |
| CN107564454B (en) * | 2017-09-29 | 2019-12-24 | 四川长虹电器股份有限公司 | Method for manually debugging gamma curve for RGBW screen module |
| CN107920241B (en) * | 2017-12-14 | 2020-04-28 | 四川长虹电器股份有限公司 | White balance processing method for liquid crystal display television |
| CN109752869B (en) * | 2019-01-24 | 2021-05-28 | 四川长虹电器股份有限公司 | Method for detecting optical performance of liquid crystal WRGB screen |
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| TW567678B (en) * | 2002-10-08 | 2003-12-21 | Ind Tech Res Inst | Driving system for Gamma correction |
| CN102376082B (en) * | 2010-08-06 | 2014-11-05 | 株式会社理光 | Image processing method and device based on gamma correction |
| CN103024429A (en) * | 2012-12-06 | 2013-04-03 | 四川长虹电器股份有限公司 | Apparatus and method for plasma televisions picture quality improvement |
| CN104766574B (en) * | 2015-03-24 | 2019-02-12 | 小米科技有限责任公司 | Color temperature adjusting method and device |
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