CN100412939C - Liquid crystal display colour-temp. automatic regulation systemand method - Google Patents
Liquid crystal display colour-temp. automatic regulation systemand method Download PDFInfo
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- CN100412939C CN100412939C CNB200410027767XA CN200410027767A CN100412939C CN 100412939 C CN100412939 C CN 100412939C CN B200410027767X A CNB200410027767X A CN B200410027767XA CN 200410027767 A CN200410027767 A CN 200410027767A CN 100412939 C CN100412939 C CN 100412939C
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Abstract
The present invention discloses a liquid crystal display device colour-temp. automatic regulation system and a method. The system provides a plurality of liquid crystal display devices which carry out colour-temp. regulation, a colour analyser which converts an image displayed into concrete colour-temp. value, a VGA signal generator which provides standard all white images and a personal computer which carries out information analysis and regulates the colour-temp. of the liquid crystal display device, wherein a probe head of the colour analyser extends to the central position of the liquid crystal display device of which the colour-temp. to be regulated and transmits the captured present colour-temp. information of the liquid crystal display device to the colour analyser. The present invention completes the interchange of data and communication between the liquid crystal display device and the personal computer by using an RS-232 asychronous transceiver and a bottom layer communication program and stores the data in a worksheet so that data statistics can be carried out conveniently. The present invention has the advantages of saving operation time and increasing productivity.
Description
[technical field]
The present invention relates to a kind of display color temperature automatic adjustment technologies, refer to especially when the production LCD, can finish the system and method for colour temperature adjustment within a short period of time by this technology.
[background technology]
Colour temperature is a kind of unit that is used for measuring light or light source colour, and unit represents with K (Kelvin).The colour temperature of its Smalt is higher, is about 8000K to 10000K, is called ' cool tone ' (Cool tone); Red colour temperature is then on the low side, is about 2000K to 3000K, is called as ' dim tone ' (Warm tone).Which colour temperature display producer when dispatching from the factory can accomplish according to customer requirement, and two kinds of different tones of changes in temperature are regulated picture, and the warm tones picture is beautiful; The cool tone picture is soft.
The LCD of now being produced all has above-mentioned colour temperature to select, i.e. cool colour temperature, the gentle User Defined of warm colour etc.The reason of doing like this is: because the human eye otherness in Europe and inferior state causes inferior state to prefer warm colour, people from Europe prefers cool colour, so the setting of warm colour (6500K), cool colour (9300K) and Red (5700K) is arranged in LCD (monitor).But the color adjusting of LCD (LCD) is not fully up to expectations always, this is because the color adjusting of LCD will be considered the attribute of environment light source and LCD, the visible angle of adding LCD is narrow, and the viewing angle and the color correctness that adjust a best simultaneously just are not easy very much.
Owing to can not decent product design equally require each LCD of product bundle of lines all to do the adjustment of R, G, B three primary colours aborning, if take said method, production capacity will be very low, will not reach customer requirement again.So need a kind of module and relevant device of automatic regulator solution crystal display colour temperature, can finish the colour temperature adjustment of a LCD utmost point short time (finishing in 5 seconds).
[summary of the invention]
Deficiency at prior art, fundamental purpose of the present invention is to provide a kind of LCD colour temperature robotization regulating system, and it can be when production LCD (LCD Monitor), finishes the adjustment of colour temperature in the short time at the utmost point, improve and produce line production capacity (UPH, Units Per Hour).
For realizing purpose of the present invention, this system provides LCD, a color analyzer, a VGA signal generator, a client computer (PC) and a database of many colour temperatures to be adjusted.
Wherein, color analyzer adopts contactless measurement design, and in order to measure brightness and color representation and the white balance adjustment of LCD, it provides three kinds of different chromaticity coordinate systems, comprises xyY (xy: chromaticity coordinate value, Y brightness value).The VGA signal generator is that the source takes place a video standard signal, a complete white picture is provided can for the LCD that will adjust.Color analyzer is by reaching probe the LCD center that will adjust, directly obtain the colour temperature data of current this LCD and convert thereof into concrete color temperature value, color analyzer to PC, carries out above-mentioned colour temperature data transmission colour temperature by PC and the cooperation of LCD bottom program and regulates then; TCO99 colour temperature standard and monitor information table under the various chromaticity coordinate systems of database storing.
For realizing purpose of the present invention, the present invention also provides a kind of LCD colour temperature robotization control method.This method comprises the steps: (a) initialization PC, the LCD of colour temperature to be adjusted, color analyzer; (b) adjust display to the first kind of chromaticity coordinate system; (c) obtain x coordinate figure, the y coordinate figure of this first chromaticity coordinate system from color analyzer; (d) judge whether x, y meet the standard of this kind chromaticity coordinate system; (e), then carry out rgb value and regulate if x, y value do not meet above-mentioned standard; (f) adjust LCD to the second kind of chromaticity coordinate system again; (g) obtain x coordinate figure, the y coordinate figure of this second kind of chromaticity coordinate system from color analyzer; (h) judge whether x, y meet the standard of this kind chromaticity coordinate system; (i), then carry out rgb value and regulate if x, y value do not meet the standard of this kind chromaticity coordinate system; (j) adjust LCD once more to the third chromaticity coordinate system; (k) obtain x coordinate figure, the y coordinate figure of this third chromaticity coordinate system from color analyzer, the Y coordinate figure; (l) judge whether x, y, Y meet the standard of this kind chromaticity coordinate system; (m) if x, y, Y value do not meet the standard of this kind chromaticity coordinate system, then to carry out rgb value and pwm and regulate, flow process finishes.
[description of drawings]
Fig. 1 is the hardware structure figure of LCD colour temperature robotization regulating system of the present invention.
Fig. 2 is the surface chart of client computer watch-dog of the present invention.
Fig. 3 adjusts operation process chart for the colour temperature of LCD colour temperature robotization regulating system of the present invention.
[embodiment]
At first explain the term that present embodiment is involved:
The R value: i.e. Red value is the red value of three primary colours.
The G value: i.e. Green value is the green value of three primary colours.
The B value: i.e. Blue value is the blue valve of three primary colours.
PWM: pulse-length modulation.
Present embodiment adopts Chroma 7120 color analyzers, but also can adopt other color analyzer in reality is produced.Chroma 7120 is equipped with the inductor of approximate CIE1931 color matching function, can accurately measure the luminous energy of liquid crystal panel outgoing.The user can freely be switched three kinds of different chromaticity coordinate systems, comprises xyY (xy: chromaticity coordinate value, Y: brightness value).
The demand 5700K that present embodiment proposes with the client, 9300K, 6500K are example.For example, under the colour temperature standard of TCO99, the abscissa value of 5700 colour temperatures is 0.328, and ordinate value is 0.344, and this horizontal ordinate value is 328 and 344 of demonstration at the Chroma7120 color analyzer.Present embodiment is represented abscissa value with the x coordinate figure, represents ordinate value with the y coordinate figure.
Consulting shown in Figure 1ly, is the enforcement hardware structure figure of LCD colour temperature robotization regulating system of the present invention.Color analyzer 1 connects a port A of client computer 2 by communication cable, level conversion card 4 connects a port B of client computer 2, one barcode scanner 6 is connected to the another port C of client computer 2, client computer 2 provides a database 9, this database 9 is deposited the monitor information table that transmits from the production scene and the colour temperature standard under the various chromaticity coordinate system, wherein the file layout of monitor information table can be electrical form, default color temperature value when being used to store every display and leaving production line, the bar code that comprises every display, the concrete data of every display under various colour temperatures, bar code is unique identify label of every display; One VGA signal generator 5 connects one of level conversion card 4 port by vision cable, and a LCD 3 to be adjusted connects the another port of level conversion card 4 by vision cable.
Client computer 2 provides a color temperature value judge module 21 and a long-range colour temperature adjustment module 22.Wherein, color temperature value judge module 21 is used for the bar code of the LCD obtained according to barcode scanner 6, monitor information table in the Query Database 9 and colour temperature standard, and whether whether the color temperature value of judging LCD 3 in normal range, need to adjust; Long-range colour temperature adjustment module 22 is used for initialization color analyzer 1, the colour temperature of the color temperature value remote adjustment LCD of obtaining according to color analyzer 13.Level conversion card 4 utilizes the RS-232 communications protocol that the exchanges data between client computer 2 and the LCD 3 and the channel of communication are provided, this level conversion card 4 comprises that one receives colour temperature adjustment module 41, this reception colour temperature adjustment module 41 is used for the colour temperature regulated value of receiving remote colour temperature adjustment module 22 transmission, and with this data transmission to LCD to be adjusted, carry out the colour temperature adjusting by PC and the cooperation of LCD bottom program.LCD 3 provides an asynchronism transceiver, and this asynchronism transceiver provides a display bottom program (not shown).
Wherein barcode scanner 6 is used to scan the bar code of LCD to be adjusted, and client computer 2 obtains the colour temperature preset data of this LCD by this bar code in database 9, and judges whether this LCD needs to adjust colour temperature; VGA signal generator 5 provides complete white picture to the LCD 3 of colour temperature to be adjusted; The probe 7 of color analyzer 1 reaches LCD 3 centers that will adjust, obtains the colour temperature data of this white picture, by color analyzer 1 this data-switching is become concrete color temperature value; And this color temperature value is transferred to client computer 2,22 pairs of these LCD 3 of long-range colour temperature adjustment module are carried out remote adjustment, it regulates picture can show that the form of expression of this adjusting picture can be electrical form, as shown in Figure 2 by the watch-dog (Monitor) 8 of client computer 2; The reception colour temperature adjustment module 41 of level conversion card 4 receives above-mentioned adjusting data and this data transmission is arrived LCD to be adjusted, carries out colour temperature by PC and the cooperation of LCD bottom program and regulates.
Consulting shown in Figure 2ly, is the surface chart of watch-dog of the present invention.This surface chart is controlled by the long-range colour temperature adjustment module of client computer 2.When barcode scanner 6 scanning one colour temperature LCD to be adjusted, activate this long-range colour temperature adjustment module 22, picture shown in second figure occurs.Wherein BarCode field 31 is the bar code of display, and this bar code is unique identify label of display.5700K field 32 is a kind of chromaticity coordinate system, it comprises x coordinate fields 321, y coordinate fields 322 and Result field 323, store x chromatic value, y chromatic value and the LCD whether correct result of colour temperature under this kind chromatic value respectively, the available PASS of this result represents that this LCD adjusts at this chromaticity coordinate system, represent that with Adjusting this LCD carrying out the colour temperature adjustment at this chromaticity coordinate system, application program can be to the LCD adjustment.9300K field 33 is another kind of chromaticity coordinate system, and it comprises x coordinate fields 331, y coordinate fields 332 and Result field 333.6500K field 34 is another chromaticity coordinate system, and it also comprises x coordinate fields 341, y coordinate fields 342, Y brightness value field 343 and Result field 344.
Consulting shown in the 3rd figure, is that the colour temperature of LCD colour temperature robotization regulating system of the present invention is adjusted operation process chart.At first, initialization client computer 2, the LCD 3 of colour temperature to be adjusted, color analyzer 1 (step S400), it also is the long-range colour temperature adjustment module 22 of initialization client computer 2, scan the bar code of the LCD of colour temperature to be adjusted by barcode scanner 6, the monitor information table of Query Database 9 also obtains the original color temperature value of this LCD, whether needs carry out the colour temperature adjustment to judge this LCD according to the colour temperature standard under the various chromaticity coordinate systems of database 9 storages, and make color analyzer 1 and client computer 2 set up the remote control and regulation relation by long-range colour temperature adjustment module.If this LCD 3 need be carried out the colour temperature adjustment, then provide a standard complete white picture for colour temperature LCD 3 to be adjusted by VGA signal generator 5, the signal that long-range colour temperature adjustment module 22 is adjusted the color temperature value of this LCD 3 to 5700K by 4 one on level conversion card is adjusted its colour temperature to 5700K (step S402) by the bottom program of LCD 3.Probe 7 immediate datas that record under this color temperature value are x coordinate figure and y coordinate figure by color analyzer 1 with this data conversion, obtain this x coordinate figure and y coordinate figure by long-range colour temperature adjustment module 22 again and are presented at the interface (step S404) of watch-dog 8.Judge that according to the colour temperature standard in the database 9 x coordinate figure and y coordinate figure are whether in normal range by color temperature value judge module 21, judge that promptly whether the x coordinate figure is 328, positive negative error is no more than 10, and whether the y coordinate figure is 344, and positive negative error is no more than 10 (step S406).If the x coordinate figure is less than 328, the bottom program that long-range colour temperature adjustment module 22 increases the signal of R value to this LCD to be adjusted 3 by 4 one on level conversion card, this bottom program increases the R value, if the colour temperature display result of its increase R value is real-time and represent intuitively that in this LCD to be adjusted 3 the x coordinate figure is greater than 328 dynamically, the bottom program that long-range colour temperature adjustment module 22 reduces the signal of R value to this LCD to be adjusted 3 by 4 one on level conversion card, this bottom program reduces the R value; If the y coordinate figure is less than 344, the signal that long-range colour temperature adjustment module 22 increases B value by 4 one on level conversion card is given the bottom program of this LCD to be adjusted 3, this bottom program increase B value; If y is greater than 344, the signal that long-range colour temperature adjustment module 22 reduces B value by 4 one on level conversion card is given the bottom program of this LCD to be adjusted 3, this bottom program minimizing B value; If Red is a maximal value, then the signal that reduces Green value by 4 one on level conversion card by long-range colour temperature adjustment module 22 is given the bottom program of this LCD to be adjusted 3, this bottom program minimizing Green value (step S408).If the x coordinate figure of 5700K colour temperature and y coordinate figure all in normal range, then are transferred to 9300K (step S410) by long-range colour temperature adjustment module 22 with the colour temperature of LCD 3 to be adjusted.In like manner, probe 7 immediate datas that record under this color temperature value are x coordinate figure and y coordinate figure by color analyzer 1 with this data conversion, obtain this x coordinate figure and y coordinate figure by long-range colour temperature adjustment module 22 again and are presented at the interface (step S412) of watch-dog 8.Judge that by color temperature value 21 judge modules whether x coordinate figure and y coordinate figure whether in normal range, promptly judge the x coordinate figure 283, positive negative error is no more than 10, and whether the y coordinate figure is 297, and positive negative error is no more than 10 (step S414).If the x coordinate figure less than 283, just increases the R value, if the x coordinate figure greater than 283, just reduces the R value; If the y coordinate figure less than 297, increases the B value, if y greater than 297, reduces the B value; If Blue is a maximal value, reduce Green (step S416).If the x coordinate figure of 9300K colour temperature and y coordinate figure in normal range, then are transferred to 6500K (step S418) by long-range colour temperature adjustment module 22 with the colour temperature of colour temperature LCD 3 to be adjusted.In like manner, probe 7 immediate datas that record under this color temperature value, is x coordinate figure, y coordinate figure and Y brightness value by color analyzer 1 with this data conversion, obtains this x coordinate figure, y coordinate figure and Y brightness value by long-range colour temperature adjustment module 22 again and is presented at the interface (step S420) of watch-dog 8.Judge that by color temperature value judge module 21 x coordinate figure, y coordinate figure and Y brightness value are whether in normal range, judge that promptly whether the x coordinate figure is 313, positive negative error is no more than 10, whether the y coordinate figure is 329, positive negative error is no more than 10, whether the Y brightness value is 180, and positive negative error is no more than 5 (step S422).If the x coordinate figure less than 313, increases the R value, if the x coordinate figure greater than 313, just reduces the R value; If the y coordinate figure less than 329, increases the B value, if y greater than 329, reduces the B value; If the Y brightness value is less than 165, perhaps the Y brightness value then uses PWM greater than 195, promptly LCD 3 is carried out pulse-length modulation, if the Y brightness value not in this scope, is then done fine setting (step S424) to the Green value.
Claims (2)
1. LCD colour temperature robotization regulating system, it can be when the production LCD, finish the adjustment of colour temperature in short time at the utmost point, improve and produce the line production capacity, this system provides a client computer, a color analyzer, a VGA signal generator, a level conversion card, the LCD of many colour temperatures to be adjusted, a plurality of scanner and a database, it is characterized in that:
Described database is used to store the monitor information table that transmits from the production scene and the colour temperature standard under the various chromaticity coordinate system, and described monitor information table is used to store the bar code of every LCD, the color temperature value that presets;
Described client computer provides:
One color temperature value judge module is used for the bar code of the LCD obtained according to scanner, monitor information table in the Query Database and colour temperature standard, and whether whether the color temperature value of judging LCD in normal range, need to adjust;
One long-range colour temperature adjustment module is used for the initialization color analyzer, the colour temperature of the color temperature value remote adjustment LCD of obtaining according to color analyzer;
Described level conversion card, be used to carry out high-low level conversion, realize exchanges data and communication between display and the client computer, it provides:
One receives the colour temperature adjustment module, is used to receive the colour temperature adjusting data of client computer transmission and this data transmission is arrived LCD to be adjusted;
The LCD of described colour temperature to be adjusted comprises a bottom program, can receive the colour temperature adjusting data that client computer transmits by the level conversion clamping, carries out the colour temperature of LCD and regulates;
The VGA signal generator is used for providing complete white picture to LCD to be adjusted;
Color analyzer is used to obtain the colour temperature data of colour temperature LCD picture to be adjusted, and converts concrete color temperature value to.
2. LCD colour temperature robotization control method, this method can be when the production LCD, finish the adjustment of colour temperature in the short time at the utmost point, improve and produce the line production capacity, are characterised in that altogether this method comprises the steps::
One client computer is provided, one color analyzer, one VGA signal generator, one level conversion card, the LCD of many colour temperatures to be adjusted, a plurality of scanners and one are used to store the monitor information table that transmits from the production scene and the colour temperature standard database under the various chromaticity coordinate system, described monitor information table is used to store the bar code of every LCD, the color temperature value that presets, described chromaticity coordinate system comprises the x coordinate fields, y coordinate fields and Result field are stored the x chromatic value respectively, whether correct y chromatic value and LCD under this kind chromatic value colour temperature result;
The bar code of the LCD by a colour temperature to be adjusted of a scanner scanning, query display device information table are to obtain the original color temperature value of this LCD, whether needs carry out the colour temperature adjustment to judge this LCD according to the colour temperature standard under these various chromaticity coordinate systems, with the LCD of initialization client computer and colour temperature to be adjusted;
Provide complete white picture to colour temperature LCD to be adjusted;
The probe of color analyzer is reached the center of display to be adjusted, and color analyzer is in by the state of client computer remote control and regulation, with the initialization color analyzer;
Adjust the color temperature value of LCD to certain chromaticity coordinate system according to customer demand;
Obtain x chromatic value, the y chromatic value under this chromaticity coordinate system and be sent to client computer from color analyzer;
The colour temperature standard of this chromaticity coordinate system of storing in x chromatic value, y chromatic value and the database of client computer with acquisition compares, and judges whether the x chromatic value, the y chromatic value that are obtained meet this standard;
If do not meet this standard, then according to the big or small corresponding increase of x chromatic value, y chromatic value or reduce the size of R, G, B tristimulus value.
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| CNB200410027767XA CN100412939C (en) | 2004-06-17 | 2004-06-17 | Liquid crystal display colour-temp. automatic regulation systemand method |
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| CNB200410027767XA CN100412939C (en) | 2004-06-17 | 2004-06-17 | Liquid crystal display colour-temp. automatic regulation systemand method |
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| CN100412939C true CN100412939C (en) | 2008-08-20 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5510859B2 (en) * | 2007-03-30 | 2014-06-04 | Ｎｌｔテクノロジー株式会社 | Backlight device and liquid crystal display device |
| CN101685596B (en) * | 2008-09-28 | 2013-01-02 | 四川世纪双虹显示器件有限公司 | Method and system for automatically adjusting color temperature for digital display equipment |
| CN101887673B (en) * | 2010-07-21 | 2011-11-30 | 福建捷联电子有限公司 | Method for dynamically predicting color temperatures of liquid crystal display television |
| CN105336306B (en) * | 2014-07-11 | 2018-12-14 | 联想(北京)有限公司 | A kind of color temperature adjusting method and electronic equipment |
| CN109348205B (en) * | 2018-10-15 | 2019-12-24 | 南京熊猫电子股份有限公司 | White balance adjusting method and device |
| CN110827769B (en) * | 2019-11-12 | 2021-09-21 | 昆山龙腾光电股份有限公司 | Adaptation device and display device |
| WO2022018872A1 (en) * | 2020-07-22 | 2022-01-27 | Eizo株式会社 | Provision system and provision method |
| CN113160091B (en) * | 2021-05-21 | 2024-09-10 | 京东方科技集团股份有限公司 | Color temperature adjusting method and device of display device, storage medium and electronic device |
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| JPH10187109A (en) * | 1996-12-20 | 1998-07-14 | Fujitsu General Ltd | Multi-display system |
| US6657611B1 (en) * | 1999-05-12 | 2003-12-02 | Koninklijke Philips Electronics N.V. | White color selection of display information |
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