TWI287784B

TWI287784B - Method and device to adjust the color temperature of color display

Info

Publication number: TWI287784B
Application number: TW93108218A
Authority: TW
Inventors: Yung-Chih Chen; Tun-Chiech Yang
Original assignee: Coretronic Corp
Priority date: 2004-03-26
Filing date: 2004-03-26
Publication date: 2007-10-01
Also published as: TW200532637A

Abstract

The present invention provides a method and device to adjust the color temperature of color display. By using the method of the present invention, the output signal levels of three primaries (RGB) for the display can be dynamically adjusted, so that different color displays can radiate lights with the same color temperature at the same setting of color temperature. Under the condition of knowing the output levels of the three primaries, obtain the values, measured by a colorimeter, of the radiated lights of a standard color-expression system for the display currently. Then using an algorithm to calculate the ratio between the color temperature radiated currently and the target temperature under the same standard color-expression system by. Based on this, the output signal levels of three primaries required by the target color temperature to be adjusted are calculated. The result is written into the color profile of the color display by the present device.

Description

12877841287784

【技術領域】本發明是有關一種彩色置’特別是一種調校彩色顯訊號之輪出基準，並將此調描述檔的方法及其裝置。【先前技術】顯，态的色溫調校方法及其裝 7器的紅藍綠（RGB)三原色光（杈結果寫入彩色顯示器的色彩 ”顯：器（下文簡稱顯示器)如液晶顯示器或是傳統之陰極射線管（CRT)顯示器的色彩輸入訊號，係由分別表不紅光（R)、綠光（G)和藍光（B)等三原色光（以下簡稱為又 R，G，B—)的數位訊號所組成，輸入與輸出均是由〇〜個等級來示；依據色光的加法混色的原則，即可利用上述三種不同之色光，再透過不同的亮度（luminance)比例控&即可產生數以百萬計的不同色光及色溫。而色溫則與r，g，b 二種色光能ϊ的比例分佈關係有關，顯示器内的軔體可藉由没定R，G，B的輸出基準使顯示器輻射出不同的色溫，而這些基準在軔體燒錄後則固定不變了；再就物理意義而言’色溫表示了光源的光譜特性，某光源的光譜分佈和黑體輻射相同時，此時黑體輻射相對應的絕對溫度（κ。），稱為此光源的色溫，而一般顯示器的預設色溫有幾種，如 9300Κ。，6500Κ。，5000Κ。 · ··等，其通常分別表示為 D93，D65，D50 〇我們知道因輸出/輸入設備的不同，雖不至於改變數位影像内的資料，卻會因不同的色彩顯示方式而得到不同的表現結果。這使得影像色彩的重製（reproduction)成BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color arrangement, and more particularly to a method and apparatus for adjusting a wheel-out reference of a color display signal. [Prior Art] The color temperature adjustment method of the display state, and the red, blue, green (RGB) three primary colors of the device (the color of the color is written into the color display): (hereinafter referred to as the display) such as the liquid crystal display or the conventional The color input signal of the cathode ray tube (CRT) display is composed of three primary colors of light (R), green light (G) and blue light (B) (hereinafter referred to as R, G, B-). Digital signal consisting of input and output are shown by 〇~ level; according to the principle of additive color mixing of color light, the above three different color lights can be used, and then through different brightness ratio control & Millions of different shades of light and color temperature. The color temperature is related to the proportional distribution of the two colors of r, g, b. The body of the display can be made by the output reference of R, G, and B. The display radiates different color temperatures, and these references are fixed after the carcass is burned; in the physical sense, the color temperature indicates the spectral characteristics of the light source, and the spectral distribution of a light source and the black body radiation are the same. Black body radiation The corresponding absolute temperature (κ.) is called the color temperature of the light source, and the preset color temperature of the general display is several, such as 9300Κ, 6500Κ, 5000Κ. ···, etc., which are usually expressed as D93, D65 respectively. , D50 〇 We know that because of the difference of the output/input device, although the data in the digital image is not changed, different performance results are obtained due to different color display modes. This makes the reproduction of the image color into

第6頁 1287784 五、發明說明（2) 為一大難題。例如：在以青（c)、洋紅（M)、黃（γ)等三色為色彩重製基礎的印刷領域中，如何讓同一個影像檔案以不同種類的列印器材印刷出同樣的結果？以及如何在不同薇牌（以RGB為色彩重製基礎）的顯示器上顯示出同等的顏色？為了解決這些因為裝置的不同或是色彩重製時的問題’因此必須定義一種色彩描述的模式是不因使用設備而有所差距的，稱為標準參考色域，使某不同設備的RGB色彩或是CMY色彩皆能與標準參考色域中的一個色彩對應，以便在不同的設備間進行色彩轉換後仍不致失真。在1 9 3 1 年國際照明協會（Commission Intornation De’l E’ clairage, CIE)或間稱 ICI ( international Commission on I 1 luminat i〇n )制定了以物理測量的方法’再用數字型態定量來表示各種顏色的色彩空間（c 〇丨〇 r space)，例如以顏色匹配實驗產生的CIE — R· G. B座標制 (CIE1931年標準色度觀察者），CIE L*a*b*，以及 C I El 931 Yxy表色方法便是常用的數種色彩空間。而不同裝置的色彩管理系統（color management system, CMS)則需要一個具有精確的色彩重現特性之定義的色彩描述檀、 (Color Prof i le)來應付各個顯示器之間色彩轉換的需求，而這種色彩描述樓一般而言係透過軔體的方式儲存於每一部顯示器中’已知有關產生色彩描述檔的技術如美國專利第5，6 1 9，4 2 7中有詳細的介紹。 ' 由於色彩是光的反射經由人眼觀察後獲得的一種感Page 6 1287784 V. Invention Description (2) is a big problem. For example, in the field of printing based on three colors of cyan (c), magenta (M), and yellow (γ), how can the same image file print the same result with different types of printing equipment? And how to display the same color on different monitors (based on RGB for color reproduction)? In order to solve these problems due to differences in devices or color reproduction, it is therefore necessary to define a pattern of color descriptions that are not differentiated by the use of devices, called standard reference gamuts, to make RGB colors of a different device or It is CMY color that corresponds to a color in the standard reference gamut so that it does not distort after color conversion between different devices. In 1999, the Commission Intornation De'l E' clairage (CIE) or ICI (International Commission on I 1 luminat i〇n) developed a method of physical measurement to re-use digital type quantification. To represent the color space of various colors (c 〇丨〇r space), such as the CIE-R·G.B coordinate system produced by the color matching experiment (CIE 1931 standard chromatic observer), CIE L*a*b*, And the CI El 931 Yxy color method is a common color space. The color management system (CMS) of different devices requires a color description with precise definition of color reproduction characteristics, which is used to cope with the color conversion between displays. A color description building is generally stored in each display by means of a carcass. 'A technique known to produce a color profile is described in detail in U.S. Patent No. 5,6, 9, 427. 'Because color is a reflection of light that is observed through the human eye

第7頁 1287784 五、發明說明（3) 受，而在不同波長的光源或是不同色溫（color temperature)之光源的環境下，顯示器即使在相同的RGB 輸出基準之下，其給予人眼的色彩感受亦會不同。術已知可以依據環境光源之色溫調校顯示器之色溫的技如頒給Park等人的美國專利第5, 791，781號”決定彩色顯示裝置之色溫的方法（Method of determining colop temperature for color display device)"，此一技術主要是利用兩組不同的色補片（p a t c h s e t)來決定顯示器之色溫的技術，其中一組由數個在各別之光源成分下顯現灰度的色補片組成，另一組係由數個成對之同色異譜的色補片所組成，依據該方法將不需使用色度計，就可以在考庹環境之發光體的先決條件下，藉由決定顯示裝置之色溫二色彩管理模式下的色彩特性資料，提供所需之色溫資Z以產生裝置所需的描述檔，但是卻沒有提出任何的建議來證顯不器所輻射的色溫皆能符合標準。 ” 所描二° =顯示器Λ色溫的方式，可以利用硬體與初體 % / ^ /b(如顯不窃内儲存有色彩描述檔的軔體以及二f進行調校，也可以透過軟體（如影像編輯軟體二=提：的功能來實現；事實上，每台顯示器既盆ί己二$ t同家廠商製造也會因不同的RGB磷光劑而有廠域’所以即使是採同相同之色彩描述襠的同- 可以達到標準的色溫值。乃難以保證其輕射出的色溫優良的顯示器的硬體功能允許使用者自行調校色溫，Page 7 1287784 V. Description of the invention (3) Under the environment of different wavelengths of light source or light source of different color temperature, the display gives the color of the human eye even under the same RGB output reference. Feelings will also be different. The method of determining the color temperature of a color display device is determined by the method of determining the color temperature of the color display device (U.S. Patent No. 5,791,781 to Park et al.). Device)", this technique is mainly a technique that uses two different sets of patchsets to determine the color temperature of the display, one of which consists of several color patches that exhibit grayscale under the respective source components. The other group consists of several pairs of color-matched color patches. According to this method, it is possible to determine the display under the preconditions of the illuminant in the environment without using a colorimeter. The color characteristic data of the color temperature two color management mode of the device provides the required color temperature Z to generate the description file required by the device, but no suggestion is made to prove that the color temperature radiated by the display device can meet the standard. ”2°=The color temperature of the display can be adjusted by using the hardware and the initial body % / ^ /b (such as the 轫储存储存以及以及以及以及以及以及以及以及以及It can also be realized by software (such as the function of image editing software==: in fact, each display is made by the same manufacturer, but also because of different RGB phosphors. It is the same color description as the same color - it can reach the standard color temperature value. It is difficult to ensure that the light color of the display with good color temperature allows the user to adjust the color temperature by himself.

第8頁 1287784 五、發明說明（4)Page 8 1287784 V. Description of invention (4)

甚至可以對RGB調校其個別的強度。但若是顯示器並未提供色溫調校的功能，我們僅能透過軟體控制的方式進行色溫的調校。例如，一個硬體色溫為93〇〇K。（偏藍）的顯示為’要調校至5 Ο Ο Ο K ° (偏紅），其調校方法就是把藍光 (B)的輸出基準減少，結果在藍色來說，輸入是255時，輸出的綠色最多只是2 3 5，藍色最多只是2 1 9。結果綠色及藍色減少，顯示器偏紅，達至預定的色溫。雖然色溫是到達了所欲調校的目標，但由於可輸出最多的綠光及藍光減少了 ’而且並未針對亮度（luminance)進行相應的調校，所以造成整體的光量及顏色也減少了。【内容】本發明的主要目的在提供一種顯示器的色溫調校方法:用以調校輸出至顯示器的三原色光訊號輸出基準，使顯示裔輪射出的色溫接近設定之目標色溫。、本發明所揭露的方法，基本上是在一標準參考色域中 f出相應於欲調校之目標色溫的色彩表示值，換句話說即是找出目標色溫在標準參考色域中的色度座標（以下稱為第一色度座標），接著在當前顯示器之三原色光之輸出基準h，I，^2 (係指控制顯示器之三原色光之能量強度的數值一二”於〇〜2 5 5)為已知的條件下，利用色度計取得當前，不态輻=出的色溫，並且在相同的標準參考色域中找到 :應=當刖色溫的色度座標（以下稱為第二色度座標），再用轉換矩陣將第一色度座標和第二色度座標分別轉換、、兩、一刺激值（分別稱為M第一 π三刺激值[η，g!，b〗]和1，第It is even possible to adjust its individual intensity to RGB. However, if the display does not provide color temperature adjustment, we can only adjust the color temperature through software control. For example, a hard color temperature is 93 〇〇K. (Bluish) is displayed as 'to be adjusted to 5 Ο Ο Ο K ° (reddish). The adjustment method is to reduce the output of the blue light (B). As a result, in blue, the input is 255. The output green is only 2 3 5 and the blue color is only 2 1 9 . As a result, the green and blue colors are reduced, and the display is reddish to a predetermined color temperature. Although the color temperature is the target of the desired adjustment, the maximum amount of green light and blue light is reduced and the brightness is not adjusted accordingly, resulting in a reduction in the overall amount of light and color. [Contents] A main object of the present invention is to provide a color temperature adjustment method for a display for adjusting a three primary color optical signal output reference outputted to a display such that a color temperature emitted by the display wheel is close to a set target color temperature. The method disclosed in the present invention basically outputs a color representation value corresponding to a target color temperature to be adjusted in a standard reference color gamut, in other words, a color of the target color temperature in a standard reference color gamut. The coordinate (hereinafter referred to as the first chromaticity coordinate), and then the output of the three primary colors of the current display, h, I, ^2 (refers to the value of the energy intensity of the three primary colors of the display control) 〇 ~ 2 5 5) Under the known conditions, use the colorimeter to obtain the current color temperature of the non-existing radiation, and find in the same standard reference color gamut: should = the chromaticity coordinate of the color temperature (hereinafter referred to as the second Chroma coordinates), and then use the transformation matrix to convert the first chromaticity coordinate and the second chromaticity coordinate respectively, and two and one stimulation values (referred to as M first π tristimulus values [η, g!, b], respectively] And 1, the first

1287784 五、發明說明（5) 二^刺激值[r2，g2，b2])，進—步利用這 gl，Μ和h，gz，W的比例關係推導出相應於—^桿之，原色光的輸出基準Rl，Gl，Bi，並將獲得的R! g色“，、述的I G2, Β2亚且重覆上述步驟以取得下一個 “Βι，直至獲得的^&與^82之間的的显或是彼此接近至某一容許的誤差範圍為止就過數次重覆計算_能量比例的方式，快此^了/透標色溫所需的RGB輸出基準。件。周权至目本發明的另一目的在提供一種動態的裝置，這個裝置可以快速的對顯示器進行色負;^之色溫並且將調校的結果寫入顯示器的初體之二洞校，檔。巴衫描述實現本發明之方法的裝置，基本上包括有.— (colorimeter)用以取得當前顯示器輻射出的色度計 ^ =處理單元，將已知的三原色光之輸出基‘，—資入至待調校的顯示器，並且在相同之標準參 2, B2輪 3 Ϊ應Γ:標色溫的第一色度座標’以及相應於2別 :的第二色度座標，再依本明之方法對上述資料進田別色异，獲得調校至目標色溫所需的_輸出基準；丁―運用以將運算獲得的RGB輪出基準寫入顯：ί 式說發明的較佳實施例及詳細技術内容’兹配合圖 12877841287784 V. Description of invention (5) 2 ^ stimuli value [r2, g2, b2]), using the gl, Μ and h, gz, W proportional relationship to derive the corresponding color of the corresponding color Output the reference Rl, Gl, Bi, and the obtained R!g color ",, I G2, Β2, and repeat the above steps to obtain the next "Βι, until the obtained ^ & and ^82 The RGB output reference required to repeat the _ energy ratio is repeated several times after the display is close to a certain allowable error range. Pieces. ZHOU RIGHT TO OBJECT Another object of the present invention is to provide a dynamic device that can quickly color-color the display; color temperature and write the result of the calibration to the two-hole calibration of the original body of the display. The apparatus for implementing the method of the present invention basically comprises a colorimeter for obtaining a colorimeter radiated from the current display, a processing unit, and an output of the known three primary colors of light, To the monitor to be calibrated, and in the same standard reference 2, B2 wheel 3 Ϊ should be: the first chromaticity coordinate of the color temperature and the second chromaticity coordinate corresponding to 2:, according to the method of the present invention The above data is different in color, and the _output reference required for tuning to the target color temperature is obtained; Ding is used to write the RGB round-out reference obtained by the operation: ί 式发明发明发明发明发明发明发明'兹配合图1287784

五、發明說明（6) 元胃的^法’可以藉由#料運算處理單 R G LUf)的快速運算能力’反覆的對顯示器30的描述Γ/Λ/調校’並將結果寫人顯示謂的色彩田述檔Y而具有快速動態調校的效果。在轉1931 xyY色度圖作為標準參考色域，並且V. Description of the invention (6) The method of 'Yuanwei' can be processed by the #material processing single RG LUf) 'repeated description of the display 30 Γ / Λ / calibration' and the result is written The color field description file Y has a fast dynamic adjustment effect. Turn the 1931 xyY chromaticity diagram as the standard reference gamut, and

色P 丨，2的_轉換運算後，不僅考慮了CIE 1931 xyY 素B三者的比例分佈關係’還包含了亮度因素Y的數值，對於色溫的調校更有助益。上所述僅為本發明的較佳實施例而已，並非用來限定 &明之實施範圍。即凡依本發明巾請專利範圍之内容所為的等效變化與修飾，皆應為本發明之技術範【實施方法】 ~ 首先請參閱「第1圖」，係為實現本發明之方法的裝置，其中以功能方塊圖揭露了這個裝置的較佳實施例；這個裝置包括有：一色度計（C〇l〇rimeter)1〇，係為一般常見的設備用以取得當前顯示器30輻射出的色溫1量時係將顯示㈣輻射出的光線分成紅、、綠、藍三種色光’然後使用標準參 =色域（如ΠΕ色彩空間）的色度座標（以下稱為第二色度座標）來表示色溫；一資料運算處理單元20，將已知的r，g，b輪出基準值 HB2輸入至待調校的顯示器3〇，並且 = :色溫=同；標：參考色域中分別取得：= 的第一色度座標’再依本發明之方法對上述的第—色度座The color P 丨, after the _ conversion operation of 2, not only considers the proportional distribution relationship of CIE 1931 xyY B, but also includes the value of the luminance factor Y, which is more helpful for the adjustment of the color temperature. The above description is only the preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. That is, the equivalent changes and modifications of the contents of the patent scope of the present invention should be the technical specifications of the present invention. [First Embodiment] Please refer to "FIG. 1" as a device for implementing the method of the present invention. A preferred embodiment of the apparatus is disclosed in a functional block diagram; the apparatus includes: a colorimeter (C〇l〇rimeter) 1〇, which is a commonly used device for obtaining the color temperature radiated by the current display 30. 1 quantity will display (4) the radiated light is divided into red, green, and blue light colors' and then use the chromaticity coordinates (hereinafter referred to as the second chromaticity coordinates) of the standard parameter = color gamut (such as ΠΕ color space) to represent Color temperature; a data operation processing unit 20, input the known r, g, b round reference value HB2 to the display 3〇 to be calibrated, and =: color temperature = the same; mark: reference color gamut respectively: First chromaticity coordinate 'to the above-mentioned chromaticity seat according to the method of the present invention

第11頁Page 11

^7784 五、發明說明（7) ___ =:第二色度座標資料進行運算處理，以至目標色溫所需的RGB輸出基準值G β'二广、員不裔’ —資料寫入單元40，用以將運曾驊^ r及 4寫入顯示器3。的軔體31之中。H于的R"G丨，βι輸出基有^料運算處理單元20的較佳實施方式，可它功I電腦如個人電腦(PC)，飼服機(Se刚或盆包括i 現如二個資料運算處理單元別至ί還 9似者），一輸入單元22和一輸出單=機=碟片或f類 2包含鍵盤、輸入介面和其它功能類似者、的輸入„ G含用以驅動顯示器3〇的介、雨出單兀23 接的必要元件如連接器二'面卡231，以及與顯示器3。連算處理過di::: ΐ儲：：：參考色域的資料和運以CIE 1931 xyY色度圖（見「’1Π的較佳實施例中係考色域，其"色度座標相當於三圖弋：f:稱的標準參 Y色度座標相當於綠光(G)的比、-，原2 =光⑴的比例，數Y。由圖中的馬蹄形的光级勒^夂^度座標表示亮度因到：光譜的紅色波段集中在曰圖1^右Λ長的位置，可以看戯的飽和度（saturatlon)在最轨低跡圖光的//部。中心的白光高。如果將光譜軌跡上表示二色先光原軌跡線上飽和度最的白光點E相連，則可以將色查7^皮長點與色度圖中心區域，如「第3圖」所示。因二回旦刀為各種不同的顏色因此’如果能計算出某顏色的第12頁 1287784 五、發明說明（8) 色度座標X、y，就可以在色度圖中明確地定出它的顏色特徵。例如青色（c)的色度座標為x=〇19〇2、y=〇 23〇2，它在色度圖中的位置為A點’落在藍綠色的區域内。當然不同的色彩有不同的色度座標，在色度圖中就佔有不同位置。因，，色度圖中點的位置可以代表各種色彩的顏色特徵。但疋，色度座標只規定了顏色的色度，而未規定顏色 =亮度’所以若要唯-地確定某顏色，還必須指出其亮度特徵’也即是亮度（luminance)Y的大小，綜合色度座標 X、y和亮度Y的大小即可用以表示t前相應的色溫。而在 CLE 1931 xyY色度圖中還包含有—色溫曲㈣（c。⑹ temperature curve)，其t具有數個相應於某一色溫值的點诚如I，D65，D5。可作為相應於該色溫之χ，y座標的參考依據。 niW'V本發明透過上述之裝置調校顯示器色溫的方法，其包括下列步驟：^7784 V. Inventive Note (7) ___ =: The second chromaticity coordinate data is processed, so that the RGB output reference value required for the target color temperature is G β 'two broad, and the member is '- the data is written to the unit 40, Write the 骅骅 ^ r and 4 to the display 3. Among the corpses 31. The R"G丨,βι output base has a preferred embodiment of the processing unit 20, but it can be a computer such as a personal computer (PC), a feeding machine (Se just or a basin including i is now two The data processing unit is similar to the one), an input unit 22 and an output unit = machine = disc or f type 2 including keyboard, input interface and other similar functions, the input „ G is included to drive the display 3 〇介 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , 1931 xyY chromaticity diagram (see "1 Π 较佳较佳较佳系 , , , , , , , 色色色色色色色色色色色色色色色色色色色色色色色色色色色色色色色色色色色Ratio, -, original 2 = ratio of light (1), number Y. The brightness of the horseshoe-shaped light level in the figure indicates the brightness due to: the red band of the spectrum is concentrated in the position of the right side of the figure 1^ , you can watch the saturation of the drama (saturatlon) in the most track of the low trace of the light / / the center of the white light is high. If the spectral trace on the two-color first light source The white point E with the highest saturation on the trace is connected, so you can check the long point of the color and the center of the chromaticity diagram, as shown in Figure 3. Since the two knives are of different colors, 'if Can calculate the color of the 12th page 1287784 V, invention description (8) chromaticity coordinates X, y, you can clearly determine its color characteristics in the chromaticity diagram. For example, the chromaticity coordinates of cyan (c) is x=〇19〇2, y=〇23〇2, its position in the chromaticity diagram is A point 'falling in the blue-green area. Of course, different colors have different chromaticity coordinates, in the chromaticity diagram It occupies different positions. Because, the position of the point in the chromaticity diagram can represent the color characteristics of various colors. However, the chromaticity coordinates only specify the chromaticity of the color, but the color = brightness is not specified. To determine a certain color, it is also necessary to indicate its brightness characteristic 'that is the brightness Y, the size of the integrated chromaticity coordinates X, y and brightness Y can be used to represent the corresponding color temperature before t. In CLE 1931 xyY color The graph also contains a color temperature curve (c) (c) (6) temperature curve, A number of points corresponding to a certain color temperature value, such as I, D65, D5, can be used as a reference for the color temperature corresponding to the y coordinate. The method for adjusting the color temperature of the display by the above device, Includes the following steps:

1.將已知輸出基準（0〜255 )分別為R 藍UGB)三原色光訊號顯示於顯亍2器^；^的、，工、、念 2:顯示器30輻射出之可見光的色溫，並依據πΕ 1巧xyY色度圖輸出相應於量測所得之當前色溫的色^標（以下稱為第二色度座標，表示Μ，％) ^其党度Y2 ’換句話說這個第二色度，心即 ^三原⑥色光之輸出基準^匕已知條件下的色度座私，可表不為[X2，y2Y2 ; 3.記錄相應當前色溫的色度座標[、，’丄' r” A，& ]1. The known output reference (0~255) is respectively R blue UGB) The three primary color optical signals are displayed in the display device 2; ^, ^, work, read 2: the color temperature of the visible light emitted by the display 30, and Ε Ε 1 xyY chromaticity diagram outputs the color mark corresponding to the current color temperature measured (hereinafter referred to as the second chromaticity coordinate, indicating Μ, %) ^ its party degree Y2 'in other words, this second chromaticity, The heart is ^3 original 6 color light output reference ^ 色 under the known conditions of the chromaticity private, can be expressed as [X2, y2Y2; 3. Record the corresponding color temperature chromaticity coordinates [,, '丄' r" A, & ]

第13頁 1287784 五、發明說明（9) 於一電腦可存取的儲存單元21成為一當前的色溫記錄； 4 ·利用一種轉置矩陣（M2 )，將當前的色溫記錄轉換為第二"三刺激值（t r i s t i m u 1 u s v a 1 u e )n r2，g2，b2 ; 5.反查Cl E 1931 xyY色度圖，取得待調校之目標色溫 (假設為D65)所相應的色度座標（以下稱為第一色度座標，表示為XpYi)及其亮度丫1，表示為 [xm Yi Yi ]; 6. 透過一轉置轉換為第一 7. 透過下述公色溫的二原 Γι /r2 = R ! =B 1 / B2 · 8. 結束並將獲色彩描述檔接近目標色至某一容許 (0-255)分光訊號與目達到一個預驟；矩陣（）將第一色度座標[Xi，y】Y!] π三刺激值π η，gi，b!; 式（a)利用線性比例計算出相應於目標色光訊號的輸出基準比，Gi，Bi ; /R2 ; Si /§2 = Gi /G2 ； /b2 • · ·(a); 得的輸出基準心，Gj，Bi寫入顯示器3 0的，當三原色光訊號的輸出基準R2，G2，B2 溫之三原色光訊號的輸出基準比，Gi，Bi 程度時（簡言之就是先前已知輸出基準別為I?2，G〗，B2的紅綠監（RGB)二原色標色溫相應之輸出基準心，Gi，Bi的誤差設的容許範圍之内），否則繼續下一步 9 ·以獲得的心，Gi，Β!取代前述的R2，G2，B2，並且重覆上述步驟。Page 13 1287784 V. Description of the Invention (9) A computer-accessible storage unit 21 becomes a current color temperature record; 4. A current transposition matrix (M2) is used to convert the current color temperature record to a second " Tristimu 1 usva 1 ue n r2, g2, b2 ; 5. Back-check the Cl E 1931 xyY chromaticity diagram and obtain the chromaticity coordinates corresponding to the target color temperature to be adjusted (assumed to be D65) (hereinafter referred to as It is the first chromaticity coordinate, expressed as XpYi) and its brightness 丫1, expressed as [xm Yi Yi ]; 6. It is converted to the first through a transposition. 7. The second color Γι /r2 = R through the following common color temperature ! =B 1 / B2 · 8. End and get the color description file close to the target color to a certain allowable (0-255) split signal and the target reaches a pre-sequence; the matrix () will be the first chromaticity coordinate [Xi, y 】Y!] π tristimulus value π η,gi,b!; Equation (a) uses the linear ratio to calculate the output reference ratio corresponding to the target color light signal, Gi,Bi ; /R2 ; Si /§2 = Gi /G2 ; /b2 • · · (a); The output reference center, Gj, Bi is written to the display 30, when the output signals of the three primary color optical signals are R2, G2, B2 The output reference ratio of the three primary color optical signals, Gi, Bi degree (in short, the previously known output reference is I?2, G〗, B2's red and green monitoring (RGB) two primary color standard color temperature corresponding to the output reference center, Gi, Bi is within the tolerance of the error setting), otherwise continue to the next step 9. The obtained heart, Gi, Β! replaces the aforementioned R2, G2, B2, and repeats the above steps.

第14頁 1287784 五、發明說明（10) 咸顴=謂^，刺激值（^^^_11^”111〇仍是可仿人眼 α硯的二個色彩刺激值，它可搭配到ci 下#粜爱目、、目1丨土 α < 1丁干…、乃體（」，、早硯/則者所看到的顏色。 =據^述的方法步驟，主要係透過第一”三刺激值” i’ 5 第—二刺激值"『2, g2, b2彼此的比例關係，來計標色溫之RGB的輸出基準υ，Β】；而為了使最 ί ί : t仔的⑽的輸出基準Rl，Gl，βι能使顯示器30輻射出 =J /皿達到預設的目標色溫，在前述步驟8更包括有一個比較的判斷步驟，透過這種反覆的將已知的輸出基準 G'B2和計算求得的輸出基準h，G" Bl比較其誤/的方式，來重新調校輸出至顯示器30的輸出基準r2, g2, β2，直至 5間的誤差小於某一預設的範圍以内時才停止運算2的方二兰將可以獲得較為正確的輸出基準心，G2, β2，至於允許的决貝1可以預先設定好，再將之儲存於資料運算處理單元 20的儲存單元21之中。、本發明所揭露的方法的另一較佳實施例，更在上述的 f法 >中=入一微調的步驟，用以對最後求得的誤差小於某一預設範，的輸出基準匕，Gy B2再作進一步的微調；此一步驟係直接藉由第一色度座標X1，y 1 (即為目標色溫在cie 1931 xyY色度圖中相應的位置）和第二色度座標心，y“即為輸出基準R2, G2, B2已知條件下，顯示器3〇輻射出之色溫在 CM E： 1 9 3 1 xyY色度圖中相應的位置）彼此間的相對位置關係’直接透過增加或是減少輸出至顯示器30之RGB三原色光之各別輸出基準匕，G2，&的方式來進行動態的調校。 1287784Page 14 1287784 V. Description of invention (10) Salty 颧 = said ^, the stimulus value (^^^_11^"111〇 is still the two color stimuli of the human eye α砚, it can be matched to ci#粜爱目,目目1丨土α < 1丁干...,乃体(",,早砚/则的颜色。 = According to the method steps described, mainly through the first "three stimulation" The value "i' 5 - the second stimulus value "quote 2, g2, b2, the ratio of each other, to calculate the color temperature of the RGB output reference υ, Β]; and in order to make the most ί: t 仔 (10) output The reference Rl, Gl, βι enables the display 30 to radiate out = J / dish to reach a preset target color temperature, and in the foregoing step 8 further includes a comparative determination step through which the known output reference G'B2 is passed. And calculate the obtained output reference h, G " Bl compares the error / way to recalibrate the output to the output reference r2, g2, β2 of the display 30, until the error between 5 is less than a certain preset range Only stop the square 2 of the operation 2 will get a more accurate output reference center, G2, β2, as for the allowable 1 can be preset And storing it in the storage unit 21 of the data operation processing unit 20. Another preferred embodiment of the method disclosed in the present invention further includes the step of fine-tuning in the f method described above. For the final output error less than a certain preset, the output reference 匕, Gy B2 is further fine-tuned; this step is directly by the first chromaticity coordinate X1, y 1 (ie, the target color temperature at cie 1931) The corresponding position in the xyY chromaticity diagram) and the second chromaticity coordinate center, y "is the output reference R2, G2, B2 under known conditions, the color temperature of the display 3 〇 radiated in CM E: 1 9 3 1 xyY color The relative positional relationship between the corresponding positions in the degree diagram is dynamically adjusted by directly increasing or decreasing the output of the RGB three primary colors of the display 30, G2, &

如括：Including:

此一較佳實施例方法的步驟包Step package of the method of this preferred embodiment

取得待調校之目標色溫（ xyY色度圖中相應的色度標Xi，y!) ’並儲存第一存單元21 ; 假設為D65)在CIE 1931 座標（以下稱為第一色度座色度座標於儲 2. 3. 置測顯示器3 0輻射ψ + :曰^ 命㈤山射出之可見光的色溫，在CIE 193] xyY色度圖中取得如處认曰、 /卞相應於Ϊ測所得之當前色溫的色度座ί示（以下稱為第_ $ 一名痒广挪弟一色度座禚X2, yg)，並儲存第一色度座私A，％於儲存單元21 ; =第一色度座標x!，y 1為新原點，判斷第二色度座標x2，y2至新原點之方向的向量趨勢，這個判斷 nf下列公式(b)進行簡單的座標運算，其結果以向量一f^ |來判斷；Obtain the target color temperature to be adjusted (the corresponding chromaticity scale Xi, y! in the xyY chromaticity diagram) 'and store the first storage unit 21; assume D65) at the CIE 1931 coordinate (hereinafter referred to as the first chromaticity seat color) Degree coordinates in the storage 2. 3. Display the display 3 0 radiation ψ + : 曰 ^ 命 (5) The color temperature of the visible light emitted by the mountain, obtained in the CIE 193] xyY chromaticity diagram, / / corresponding to the speculation The color temperature of the current color temperature (hereinafter referred to as the first _ $ 痒挪挪挪一一一一 2 2 X2, yg), and store the first chromaticity private A, % in the storage unit 21; = first The chromaticity coordinate x!, y 1 is the new origin, and the vector trend of the direction of the second chromaticity coordinate x2, y2 to the new origin is judged. This judgment nf the following formula (b) performs a simple coordinate operation, and the result is a vector f ^ | to judge;

•(b) R G 結果向置與⑽⑺”^色度圖中』G:B的“布關係調校輸出基準μα，換句話就疋：：各別輸出至顯示器3〇的三原色光輸出基準I Sh進行增加或是減少的處理； RGB的7山束並將調校後的輪出基準R2, G2, β2設為目標色溫 :的^出基準Rl，Gl，Bl 1此輸出基準Ri，Gi Bi寫入 :::益30的色彩描述樓’當重新量測顯示器3〇之色酿接近目標色溫達到一個預設的容許範圍之内，否• (b) RG result orientation and (10)(7)” chromaticity diagram 』G:B “cloth relationship adjustment output reference μα, in other words:: three primary color light output reference I output to the display 3〇 Sh is to increase or decrease the processing; RGB 7-beam and adjust the adjusted R2, G2, β2 as the target color temperature: the reference R1, Gl, Bl 1 This output reference Ri, Gi Bi Write:::Yi 30's color description floor' when re-measuring the display 3〇 color is close to the target color temperature within a preset tolerance range, no

1287784 ---^^一、發明說明（12) 則繼續下一步驟； 6费重新以調校後的輪出基準R2, G輸出至顯並重覆上述步驟2。、茲以一例子說明此一微調的過程，假設待調校之目標色=為650 0K。（D65)，在CIE 1931 xyY色度圖中相應的色度座標為Xi’Yi，而量測顯示器30輻射出之色溫獲又色度圖中相應的色度座標為Μ，其相對的在位置關1以及向Ϊ 如「第6圖」所示，依此向量— = Γ少綠光(G)以及藍光(B)之輪出基準G)2 ί: Λ 2’G2，B2進行微調’經過微調後的輸出 ^ j’B2被輸出至顯示器30，然後重新量測顯示器⑼的狐疋接近目標色溫，以決定是否再重覆此一微調的夕驟01287784 ---^^ I, invention description (12) Then continue to the next step; 6 fee re-adjusted the rounding reference R2, G output to display and repeat step 2 above. An example of this fine-tuning process is given, assuming that the target color to be adjusted is 650 0K. (D65), in the CIE 1931 xyY chromaticity diagram, the corresponding chromaticity coordinate is Xi'Yi, and the color temperature radiated by the measurement display 30 is obtained in the chromaticity diagram, and the corresponding chromaticity coordinate is Μ, and its relative position is Off 1 and toward Ϊ As shown in Figure 6, the vector is - Γ 绿绿绿绿绿绿绿绿绿 ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' The fine-tuned output ^j'B2 is output to the display 30, and then the fox of the display (9) is re-measured to approach the target color temperature to determine whether to repeat this fine-tuning

1287784 圖式簡單說明【圖式簡單說明】第1圖，為本發明之裝置的功能方塊圖。第2圖，為CIE 1931 xyY色度圖。第3圖，為CIE 1931 xyY色度圖，顯示不同色域位置。第4圖，為本發明的方法步驟圖。第5圖，為本發明所揭露的方法的另一較佳實施例步驟圖。第6圖，為微調實例中色度座標X i，y 1與x2，y2的位置關係圖。【圖式符號說明】 10...........色度計（colorimeter) 20 ...........資料運算處理單元 21 ...........儲存單元 22 ...........輸入单元 23 ...........輸出單元 2 31..........介面卡 23 2 ..........連接器 30 ...........顯示器 31 ...........軔體 40...........資料寫入單元1287784 Brief description of the drawings [Simplified description of the drawings] Fig. 1 is a functional block diagram of the apparatus of the present invention. Figure 2 is a CIE 1931 xyY chromaticity diagram. Figure 3 shows the CIE 1931 xyY chromaticity diagram showing the different gamut positions. Figure 4 is a diagram showing the steps of the method of the present invention. Figure 5 is a flow diagram of another preferred embodiment of the method disclosed herein. Figure 6 is a diagram showing the positional relationship of the chromaticity coordinates X i, y 1 and x2, y2 in the fine tuning example. [Description of Schematic Symbols] 10...........Colorimeter 20 (...) Data Operation Processing Unit 21 ......... .. storage unit 22 ........... input unit 23 ........... output unit 2 31 ..... interface card 23 2 .. ........Connector 30 ...........Display 31 ...........轫40...........Information Write unit

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Claims

1287784 六、申請專利範圍 1 · 一種彩色顯示器之色溫調校方法，用顯干哭的-® A ^哚μ 用以调校輸出至彩色，.，、員不。。的二原色先讯號輪出基準，使顯示器溫接近設定之目標色溫，其包括下列步驟：田色 A·將已知輸出基準（〇〜255)分別ar r η ⑽）三原色光訊號輸出至彩“刀示别器為^^的紅綠藍 Β•量測彩色顯示器輻射出之色溫的步驟，认讲唯奋考色域中取得相應於量測所得之當前於-：準乡及其亮度kg]; 色/皿的4二色度座標 ^記錄該第二色度座標於一電腦可二二值轉t置矩^ 則激值（trlstlmulus value)r2，g2，b2 ; 多：相同的該標準參考色域中取得目# 色度座標及其亮度[Xl，ylYi]; 憋的為”第F.J! 一轉置矩陣（Ml)將該第一色度座標[I y,I ]轉換二刺激值q，g:，h ; 訊依下列公式（a)計算出相應於目標色溫的三原色光 /歲的輪出基準RpGpB,; 巴先 r"rr Ri /Rn /g2 =(^ /G2 ; b】/b2 =Bl /B2 ..( & g ·、、、°束，當该輸出基準A，G2，B2接近該輸出基準 1 ’ 1，h至一容許範圍時，否則繼續下一步驟；以及驟。丨·以該R】，G〗，B〗取代前述的R2, G2, B2，並且重覆上述步 2 法申叫專利範圍第1項所述彩色顯示器之色溫調校方 ’其中該標準參考色域係為CIE 1931 xyY色度圖。1287784 VI. Scope of Application 1 · A color temperature adjustment method for a color display, using the dry-drying-® A ^哚μ to adjust the output to color, . . The two primary color first signals turn the reference to make the display temperature close to the set target color temperature, and the following steps are included: the field color A·the known output reference (〇~255) respectively ar r η (10)) the three primary color optical signals are output to the color "The knife and the indicator are the red, green and blue ^ of ^^. Measure the color temperature radiated by the color display, and recognize the current measurement in the color field corresponding to the measurement: - Zhunxiang and its brightness kg 4; color/dish 4 chromaticity coordinate ^ record the second chromaticity coordinate in a computer can be two or two values t t moment ^ 激值则则则则则则则则则则则则则则则则则则则则则则则则则则则则则则则则则则则则则则则则The reference color gamut obtains the objective chromaticity coordinate and its brightness [Xl, ylYi]; 憋 is "the FJ! A transposed matrix (Ml) converts the first chromaticity coordinate [I y, I ] into the diastolic value q,g:,h ; According to the following formula (a), calculate the three primary color light/year round reference RpGpB corresponding to the target color temperature; Ba Xian r"rr Ri /Rn /g2 =(^ /G2 ; b] /b2 =Bl /B2 ..( & g ·, ,,° bundle, when the output reference A, G2, B2 is close to the output reference 1 ' 1, h to an allowable range, otherwise Continue to the next step; and step. 丨· Replace the above R2, G2, B2 with the R], G〗, B, and repeat the above-mentioned step 2 method to apply the color temperature adjustment of the color display according to item 1 of the patent scope. The school's standard reference color gamut is the CIE 1931 xyY chromaticity diagram.

第19頁 1287784 六、申請專利範圍 ----- 3 ·如申明專利範圍第丨項所述彩色顯示器之色溫調校法，其中該容許範圍係預設儲存於該電腦可存取的元。巧仔單 4 .如申凊專利範圍第1項所述彩色顯示器之色溫調校方法，其中更包括有一將該輸出基準A, G寫入彩亍之色彩描述擋的步驟。已”、、員不裔 5 ·如申请專利範圍第丨項所述彩色顯示器之色溫調校方Page 19 1287784 VI. Scope of Application ----- 3 · The color temperature adjustment method of the color display as described in the scope of the patent application, wherein the allowable range is preset to be stored in the computer. The color temperature adjustment method of the color display according to the first aspect of the invention, further comprising the step of writing the output reference A, G into the color description block of the color palette. Has been, and is not a member of the country. 5. If the color temperature of the color display is as specified in the scope of the patent application,

法’、中更包括有一微調的步驟，係依據該第一色度座標和該第二色度座標彼此間在該標準參考色域的相對位置關係’直接透過、增加或是減少輸出至顯示器之各別輪出基準 R2，G2，B2的方式來進行動態的調校。 6 ·如申請專利範圍第5項所述彩色顯示器之色溫調校方法，其中該微調的步驟包括有·· I ·以。亥第色度座標為新原點’判斷該新原點至該第一色度座標之方向的向量趨勢，這個判斷可以透過下列公式（b)進行簡單的座標運算，其結果以向量一_y來到斷； p丨The method further includes a fine tuning step of directly transmitting, increasing or decreasing the output to the display according to the relative positional relationship between the first chromaticity coordinate and the second chromaticity coordinate in the standard reference color gamut Each of the benchmarks R2, G2, and B2 is rotated to dynamically adjust. 6. The method of adjusting the color temperature of a color display according to claim 5, wherein the step of fine-tuning comprises: ····. The Hidden chromaticity coordinate is the new origin 'determining the vector trend of the new origin to the direction of the first chromaticity coordinate. This judgment can be performed by a simple coordinate operation by the following formula (b), and the result comes with a vector _y Broken

III·依據該向量趨勢與該標準參考色域中1 G，B的分佈關係調校該輸出基準R2，G2，B2 ; ’ ’ IV. 結束’當重新量測彩色顯示器之色溫接近目標色溫達到一個預设的容許範圍之内，否則繼續下一步驟； V. 重新以調校後的該輸出基準R2，g2，B2輸出至^色顯示III. Adjust the output reference R2, G2, B2 according to the distribution trend of the vector trend and the standard reference color domain 1 G, B; ' ' IV. End ' when re-measuring the color temperature of the color display close to the target color temperature reaches one Within the preset tolerance range, otherwise continue to the next step; V. Re-calibrate the output reference R2, g2, B2 to the color display

1287784 六：申讀專利範圍為’並重覆上述步驟。法，°申請專利範圍第6項所述彩色顯系器之色溫調校方 ΛΛ其中更包括有一將該輪出基準R G2, B2設為目標色溫之的輪出基準R】，GM B!，並將該2基準Rl，Gl5 B1寫入彩色顯:器之色彩描述檔的步驟。輪出多 8·—種用以實現申請專利範圍第丨述彩色顯示器之色溫調校方法的裝置，包括有：貝的备二色度計^^…丨託^^’用以取得彩色顯示器當前的/现，依據一標準參考色域輪出應於量測所得之色溫的第二色度座標；一資料運算處理單元，將一已知的R，G，B輸出基準 =B2輸出至前述的彩色顯示器，並且依據所欲調校之目 =土溫在相同的該標準參考色域中分別取得相應於目標色 =的第一色度座標，再依該方法對上述的第一色度座標和 =一色度座標資料進行運算處理，以獲得調校彩色顯示器至目標色溫所需的RGB輸出基準值Ri，Gi，Bi ;以及一資料寫入單元，用以將該心，Gi，&輸出基準寫入彩色顯示器的色彩描述槽。 9·如申請專利範圍第8項所述之裝置，其中該標準參考色域係為CIE 1931 xyY色度圖。 I 0 ·如申請專利範圍第8項所述之裝置，其中該資料運算處理單元為内建有運算程式的電腦。 II ·如申請專利範圍第8項所述之裝置，其中該資料運算處理單元還包括有一儲存單元，一輪入單元和一輸出單元。1287784 VI: The scope of the patent application is ' and repeats the above steps. The color temperature adjustment method of the color display system according to the sixth aspect of the patent application scope includes a wheel-out reference R], GM B!, which sets the wheel reference R G2, B2 as the target color temperature. And the step of writing the 2 reference R1, Gl5 B1 into the color description file of the color display: More than 8 kinds of devices are used to realize the color temperature adjustment method of the color display of the patent application scope, including: Bei's preparation two-color meter ^^...丨^^' for obtaining the color display current / now, according to a standard reference color gamut, the second chromaticity coordinate of the color temperature to be measured is taken; a data operation processing unit outputs a known R, G, B output reference = B2 to the foregoing a color display, and according to the desired adjustment target = soil temperature, respectively obtain the first chromaticity coordinate corresponding to the target color = in the same standard reference color gamut, and then according to the method, the first chromaticity coordinate and = One-color coordinate data is processed to obtain the RGB output reference values Ri, Gi, Bi required to adjust the color display to the target color temperature; and a data writing unit for outputting the reference to the heart, Gi, & Write to the color description slot of the color display. 9. The device of claim 8, wherein the standard reference color gamut is a CIE 1931 xyY chromaticity diagram. The device of claim 8, wherein the data processing unit is a computer having a built-in computing program. The apparatus of claim 8, wherein the data processing unit further comprises a storage unit, a wheeling unit and an output unit.

^2Γΐ 1287784 六、申請專利範圍 1 2.如申請專利範圍第1 1項所述之裝置，其中該儲存單元儲存了該標準參考色域的資料和運算處理過程中的資料與結果。 1 3.如申請專利範圍第1 1項所述之裝置，其中該儲存單元為記憶體。 1 4.如申請專利範圍第1 1項所述之裝置，其中該儲存單元為硬碟機。 1 5.如申請專利範圍第11項所述之裝置，其中該輸入單元為鍵盤。 16.如申請專利範圍第11項所述之裝置，其中該輸出單元包含用以驅動彩色顯示器的介面卡，以及與彩色顯示器連接的連接器。^2Γΐ 1287784 VI. Scope of Patent Application 1 2. The device of claim 11, wherein the storage unit stores data of the standard reference color gamut and data and results during the processing. 1. The device of claim 11, wherein the storage unit is a memory. 1 4. The device of claim 11, wherein the storage unit is a hard disk drive. The device of claim 11, wherein the input unit is a keyboard. 16. The device of claim 11, wherein the output unit comprises an interface card for driving a color display and a connector for connecting to the color display.

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