TW200532637A - Method and device to adjust the color temperature of color display - Google Patents
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200532637200532637
五、發明說明（1) 【技術領域】 本發明是有關-種彩色顯示器的色溫調校方 置，特別是一種調校彩色顯示器的紅藍綠（RGB)三原色、衣 汛號之輸出基$，並將此調校結果寫入彩色顯示气 描述檔的方法及其裝置。 ^ ^ 【先前技術】 彩色顯示器（下文簡稱顯示器）如液晶顯示 之陰極射線管（CRT)顯示器的色彩輪入訊號，係由分^專統 不紅先（R)、綠光⑹和藍光⑻等三原色光（以下簡义 R，G’ B)的數位訊號所組成，輸入與輸出均是由〇〜個 級來示；依據色光的加法混色的原則，即可利用上述 不同之色光，再透過不同的專声M ^ N扪儿度（luminance)比例控制即 y產生數以百萬計的不同色光及色溫。而色溫則與& G，b 三種色光能量的比例分佈關係有關，顯示器内的軔體可 由設定R，G，B的輸出基準使顯示器輻射出不同的色溫，而曰 這二基準在軔體燒錄後則固定不變了；再就物理意義而 吕，色溫表示了光源的光譜特性，某光源的光譜分佈和里 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 93 0 0Κ。 ，650 0Κ。 ，5〇〇〇κ。 · · ·等，其通常分別表示為 D93，D65，D50。 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 的表現紇果。這使得影像色彩的重製（repr〇ducti〇n)成V. Description of the Invention (1) [Technical Field] The present invention relates to a color temperature adjustment device for a color display, particularly a red, blue and green (RGB) three primary color, and an output base of a clothes color number. The method and device for writing this adjustment result into a color display gas profile. ^ ^ [Previous technology] The color wheel input signal of a color display (hereinafter referred to as a display), such as a cathode ray tube (CRT) display of a liquid crystal display, is specifically divided into red (R), green light, blue light, etc. The three primary color lights (hereinafter abbreviated as R, G 'B) are composed of digital signals, and the input and output are shown by 0 ~ levels; according to the principle of additive color mixing of colored light, the above-mentioned different colored lights can be used and then transmitted through different The special M ^ N brightness ratio control means that y produces millions of different colors of light and color temperature. The color temperature is related to the proportion of the three color light energy distributions. The carcass in the display can set the output reference of R, G, and B to cause the display to emit different color temperatures. After recording, it is fixed; then, in terms of physical meaning, the color temperature indicates the spectral characteristics of the light source. When the spectral distribution of a light source is the same as the inner body radiation, the absolute temperature (κ.) Corresponding to the black body radiation at this time, ... It is called the color temperature of this light source, and there are several preset color temperatures for general displays, such as 9300K. 650 0K. , 50000κ. ··· etc., which are usually expressed as D93, D65, D50, respectively. We know that because of different output / input devices, although the data in the digital image will not be changed, different performance results will be obtained due to different color display methods. This makes the image color reproduction (repr〇ducti〇n) into
第6頁 200532637 五、發明說明（2) 為一大難題。例如：在以青（C )、洋紅（Μ)、黃（γ )等三色 為色彩重製基礎的印刷領域中，如何讓同一個影像播案以 不同種類的列印器材印刷出同樣的結果？以及如何在不同 廠牌（以RGB為色彩重製基礎）的顯示器上顯示出同等的顏 色？ 'Page 6 200532637 V. Explanation of the invention (2) is a big problem. For example: In the printing field based on the three colors of cyan (C), magenta (M), yellow (γ) as the basis for color reproduction, how to make the same image broadcast with different types of printing equipment to print the same result ? And how to show the same color on the monitors of different brands (based on RGB color reproduction)? '
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。在丨9 3 i 年國際照明協會（Commission Intornation De’l E， clairage， CIE)或簡稱 ICI ( International Commission on Illumination )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（col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 CIE1931 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In order to solve these problems due to different devices or color reproduction ', it is necessary to define a color description mode that does not differ depending on the device. CMY colors can correspond to one color in the standard reference color gamut, so that there is no distortion after color conversion between different devices. In 1993, the International Lighting Association (Commission Intornation De'l E, Clairage, CIE) or ICI (International Commission on Illumination) formulated a physical measurement method, and then used the digital form to quantify the colors of various colors. Col〇r space, such as the CIE-R · G · B coordinate system (CIE1931 standard chromaticity observer), CIE L * a * b *, and CIE1931 Yxy color measurement methods Several commonly used color spaces. The color management system (CMS) of different devices
需要一個具有精確的色彩重現特性之定義的色彩描述播 (C ο 1 〇 r P r 〇 f i 1 e )來應付各個顯示器之間色彩轉換的需 求，而這種色彩描述檔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A color description (C ο 1 〇r P r 〇fi 1 e) with accurate color reproduction characteristics is needed to meet the needs of color conversion between various displays, and this color profile is generally transmitted through The method of carcass is stored in each display. Known techniques for generating color profiles are described in detail in US Patent Nos. 5, 6 1, 4 2 7. Since color is a reflection of light obtained by human eyes,
第7頁 200532637 五、發明說明（3) 受’而在不同波長的光源或是不同色溫（c〇l〇r 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。 ^ 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 择員不裝置之色溫的方法（Meth〇d 〇f determining temperature f〇r c〇1〇r display device)”，此一技術主 要是利用兩組不同的色補片（patch set)來決定顯示哭之 ^溫的技術，其中一組由數個在各別之光源成分下顯現灰 又的色補片組成，另一組係由數個成對之同色異譜的色 片_所組成，依據該方法將不需使用色度計，就可以在考 % i兄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，提供所需之色溫資以 產生裝f所需的描述檔，但是卻沒有提出任何的建議來保 。正顯示為所輪射的色溫皆能符合標準。 ,、 已知調校顯示器之色溫的方式，可以利用硬體鱼軔體 所提供的功能（如顯示器内儲存有色彩描述檔的軔體以及 凋校按鍵）來進行調校，也可以透過軟體（如影像編輯軟 Photoshop)所提供的功能來實現；事實上，每台顯示器 使疋在同年由同家廠商製造也會因不同的RGB磷光劑而有 其自己的色域，所以即使是採同相同之色彩描述檔的同一Page 7 200532637 V. Description of the invention (3) In the environment of light sources with different wavelengths or light sources with different color temperatures (c0lr temperature), even if the display is under the same RGb output reference, it gives The color perception of the human eye will also be different. ^ It is known that the color temperature of the display can be adjusted according to the color temperature of the ambient light source, such as U.S. Patent No. 5,791,781 issued to Park et al., A method for determining the color temperature of a color picker (Meth〇d 〇f determining temperature f〇rc〇1〇r display device) ", this technology mainly uses two different sets of color patches (patch set) to determine the display of crying temperature, one of which consists of several The light source component is composed of color patches that appear gray and gray. The other group is composed of several pairs of metachromatic color patches_. According to this method, the colorimeter is not required, and the% i Under the prerequisites of the illuminator, by determining the color characteristics of the color temperature of the display device under the color management mode, the required color temperature information is provided to generate the profile required for the installation, but no suggestions have been made. The color temperature of the display is in compliance with the standard. The known method for adjusting the color temperature of the display can use the functions provided by the hardware carcass (such as a carcass with a color profile stored in the monitor). As well Key) to adjust, or you can use functions provided by software (such as image editing software Photoshop); in fact, each monitor made by the same manufacturer in the same year will also be due to different RGB phosphors. Its own color gamut, so even if it uses the same color profile
廠牌或疋同一型號之顯示器，仍難以保證其輻射出的 可以達到標準的色溫值。 /JDL 優良的顯示器的硬體功能允許使用者自行調校色溫，It is still difficult to guarantee that the monitors of the same brand or the same model can reach the standard color temperature value. / JDL's excellent display hardware features allow users to adjust the color temperature by themselves,
200532637 五、發明說明（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κ。（偏藍）的顯示 器，要調校至5 0 0 0Κ。（偏紅），其調校方法就是把藍光 (Β)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235，藍色最多只是219。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 顯示器輻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 =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 準匕，G2, B2 (係指控制顯示器之三原色光之能量強度的數 值:其介於0〜255 )為已知的條件下，利用色度計取得岑吁 顯不器輻射出的色溫，並且在相同的標準參考色域中二= 相應於當前色溫的色度座標（以下稱為第二色度座桿）， 利用一轉換矩陣將第一色度座標和第二色度座標分^轉2 為兩組三刺激值（分別稱為，，第一”三刺激值[ri，gi，bi]和"第200532637 V. Description of the invention (4) It is even possible to adjust the individual intensity of RGB. However, if the display does not provide color temperature adjustment, we can only perform color temperature adjustment through software control. For example, a hardware color temperature is 9300K. (Bluish) display should be adjusted to 5 0 0OK. (Reddish), the adjustment method is to reduce the output reference of blue light (B). As a result, when the input is 255 for blue, the maximum output green is only 235, and the maximum blue is only 219. As a result, the green and blue colors are reduced, and the display is reddish to reach a predetermined color temperature. Although the color temperature has reached the goal of the desired adjustment, since the maximum amount of green and blue light that can be output is reduced, and the brightness is not adjusted accordingly, the overall light quantity and color are also reduced. [Content] The main purpose of the present invention is to provide a color temperature adjustment method of a display 'for adjusting the three primary color light signal output reference output to the display so that the color temperature radiated from the display approaches the set target color temperature. The method disclosed in the present invention is basically to generate a color representation value corresponding to the target color temperature to be adjusted in a standard reference color gamut, in other words, to find the chromaticity of the target color temperature in the standard reference color gamut. Coordinates (hereinafter referred to as the first chromaticity coordinate), and then the output reference of the three primary colors of the current display, G2, B2 (referring to the values that control the energy intensity of the three primary colors of the display: it is between 0 ~ 255) is already Under the known conditions, use a colorimeter to obtain the color temperature radiated by the Cen Yu display device, and in the same standard reference color gamut, two = chromaticity coordinates corresponding to the current color temperature (hereinafter referred to as the second chromaticity seat post) Using a transformation matrix, the first chroma coordinate and the second chroma coordinate are divided into two groups of three stimulus values (referred to as, "first", three stimulus values [ri, gi, bi], and "
200532637 五、發明說明（5) 一二刺激值[，g2，]) ’進一步利用這兩組三刺激值[Γ】， g〗，Ν ]和[qh ]的比例關係推導出相應於第一色度座標 之二原色光的輸出基準，G]，B!，並將獲得的心，^，艮與 &，G2，B2比較其差異’若有差異則以獲得的&，&，&取代前 述的，Gz，Bp並且重覆上述步驟以取得下一個新的 R!，G〗，B!，直至獲得的R】，G]，B!與&，^，民之間的差異不存在 或是彼此接近至某一容許的誤差範圍為止；如此就可以透 過數次重覆計异RGB能量比例的方式，快速獲得調校至目 標色溫所需的R G B輸出基準。 本發明的另一目的在提供一種動態調校顯示器之色溫 的裝置’這個裝置可以快速的對顯示器進行色溫的調校， 並且將調校的結果寫入顯示器的軔體之中，如色彩描述 才當0 貫現本發明之方法的裝置’基本上包括有：一色度計 (colorimeter)用以取得當前顯示器輻射出的色溫；一資 料運算處理單元，將已知的三原色光之輸出基準ΜΑ、輸 入至待調校的顯示器，並且在相同之標準表考色域中分別 取得相應於目標色溫的第一色度座標，以及相應於當前色 ，的第二色度座標，再依本明之方法對上述資料進行運 算’獲得調校至目標色溫所需的RGB輪出基準；以及一資 料寫入單元，用以將運算獲得的RGB輪出^準寫入顯示器 的軔體之中。 、有關本發明的較佳實施例及詳細技術内容，茲配合圖 式說明如後。200532637 V. Description of the invention (5) One or two stimulus values [, g2,]) 'Further use the ratio of the two sets of three stimulus values [Γ], g], N] and [qh] to derive the corresponding color corresponding to the first color The output reference of the primary color light of the second degree coordinate, G], B !, and compare the obtained heart, ^, and &, G2, B2. 'If there is a difference, &, &, & Replace the foregoing, Gz, Bp and repeat the above steps to obtain the next new R !, G〗, B !, until the obtained R], G], B! And &, ^, the difference between the people They do not exist or are close to each other to a certain allowable error range; in this way, the RGB output reference required to adjust to the target color temperature can be quickly obtained by repeatedly counting the different RGB energy ratios. Another object of the present invention is to provide a device for dynamically adjusting the color temperature of a display. This device can quickly adjust the color temperature of the display, and write the result of the adjustment into the body of the display. When the device implementing the method of the present invention is 0, it basically includes: a colorimeter for obtaining the color temperature radiated by the current display; a data operation processing unit that outputs the known reference values of the three primary color lights, Go to the display to be adjusted, and obtain the first chromaticity coordinate corresponding to the target color temperature and the second chromaticity coordinate corresponding to the current color in the same standard test color gamut. The data is calculated to obtain the RGB rotation-out reference required to be adjusted to the target color temperature; and a data writing unit is used to write the RGB rotation-out obtained from the calculation into the body of the display. The preferred embodiments of the present invention and detailed technical content are described below with reference to the drawings.
第10頁 200532637 —— 五、發明說明（6) 依據本發明所揭露的方法，可以藉由資料運算處 凡20(如個人電腦）的快速運算能力’反覆的對顯示器 R，G，B輸出基準進行調校’並將結果寫入顯示器3〇的色彩 描述檔，而具有快速動態調校的效果。 / 而採用CIE 1931 xyY色度圖作為標準參考色域，並 在轉置矩陣Μ〗，Μ2的轉換運算後，不僅考慮了ΠΕ i93i 色度圖之中R，G，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。 又 上所述僅為本發明的較佳實施例而已，並非用來限定 本發明之實施範圍。即凡依本發明申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疇。 【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（colorimeter)lO，係為一般常見的設備用 以取得當前顯示器3 〇輻射出的色溫，測量時係將顯示器3 〇 輻射出的光線分成紅、綠、藍三種色光，然後使用標準參 考色域（如CIE色彩空間）的色度座標（以下稱為第二色度座 標）來表不色溫， 一資料運算處理單元20，將已知的R，G，B輸出基準值 R2，G2，B2輸入至待調校的顯示器3 〇，並且依據所欲調校之目 標色溫在相同之標準參考色域中分別取得相應於目標色溫 的第一色度座標，再依本發明之方法對上述的第一色度座Page 10 200532637 —— V. Description of the invention (6) According to the method disclosed by the present invention, the rapid computing capability of the data computing unit 20 (such as a personal computer) can be used to repeatedly output benchmarks for the display R, G, and B. Perform the adjustment 'and write the result to the color profile of the display 30, which has the effect of rapid dynamic adjustment. / The CIE 1931 xyY chromaticity diagram is used as the standard reference color gamut, and after the transformation operation of the matrix M2 and M2, not only the ratio distribution relationship of R, G, and B in the Πe i93i chromaticity diagram is considered. , Also contains the value of the brightness factor Y, which is more helpful for color temperature adjustment. The above descriptions are merely preferred embodiments of the present invention, and are not intended to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the content of the scope of patent application of the present invention shall be the technical scope of the present invention. [Implementation method] Please first refer to "Figure 1", which is a device for implementing the method of the present invention. The preferred embodiment of this device is disclosed with a functional block diagram. This device includes: a colorimeter 10 Is a common device used to obtain the color temperature radiated by the current display 30. When measuring, the light emitted by the display 30 is divided into three colors of red, green, and blue, and then the standard reference color gamut (such as the CIE color space) is used. ) Chromaticity coordinates (hereinafter referred to as the second chromaticity coordinates) to indicate the color temperature. A data operation processing unit 20 inputs the known R, G, and B reference values R2, G2, and B2 to the to-be-adjusted The display 3 〇, and according to the target color temperature to be adjusted in the same standard reference color gamut respectively obtain the first chromaticity coordinates corresponding to the target color temperature, and then according to the method of the present invention on the first chromaticity coordinates
第11頁Page 11
200532637 五、發明說明（7) 3 ί Κ ί ΐ資料進行運算處理，以獲得調校顯示器 ;=ί的『輪出基準值;以及 s窝入顯二二沾凡 用u將運算獲得的R】，G】，B〗輸出基 準寫入顯不為3 0的軔體3 1之中。 負料運鼻處理單元2 q的私— 有運算程式的電腦如個人電施方式’可以利用内建 包括有一儲存單元21(如記^口體貝，^處理早元20至少還 h 一仏抑體硬碟機，磁碟片或其類 22包人’鍵/入於早疋22和—輸出單元23 ’·其_的輸入單元 勺心入介面和其它功能類似者，而輸出單元23 二器3〇的介面卡231，以及與顯示器3。連 接的必要7G件如連接器2 3 2。 筲乂存t元21主要是用以儲存標準參考色域的資料和運 以CIE 1(ηι =1、、、°果，在本發明的較佳實施例中係 二圖(見「第2圖」）作為所稱的標準參 考色域，其中X色度座標相當於三原光中紅 γ色度座標相當於綠光⑹的比例，z色度座桿表示古产因， ^二由圖中的馬蹄形的光譜轨跡各波長的位置，；：看 :.光譜的紅色波段集中在圖的右下部，綠色置皮段了以看 θ的上部，藍色波段集中在執跡圖的左下部。中心的白 153如果將光譜執跡上表示不同色光波長％盥&@又取 的白光點Ε相連，則可以將色度圖書分皮為長各點種與色度圖中心 區域，如「笛9l口旦刀為各種不同的顏色 第3圖」所不。因此’如果能計算出某顏色的 第12頁 200532637 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χ = 〇·19〇2、尸0.2302，它 在色度圖中的位置為Α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。因此，色度圖中點的位置可以代表各種色彩的顏色特 徵。但是，色度座標只規定了顏色的色度，而未規定顏色 的亮度，所以若要唯一地確定某顏色，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和売度Y的大小即可用以表示當前相應的色溫。而在 CIE 1931 xyY色度圖中還包含有一色溫曲線口^⑶丨… temperature Curve)，其中具有數個相應於某一色溫值的 麥考點，如D93，Des，可作為相應於該色溫之座標 參考依據。 η :4去圖WV本發明透過上述之裝置調校顯示器 色>JHL的方法，其包括下列步驟： 輸出基準（〇〜255) *別為r2，g2，B2的紅綠 = (RGB)^原色光訊號顯示於顯示器30 ; ’、 2 ·置測顯不器3 〇亲3射ψ > θ 1200532637 V. Description of the invention (7) 3 ί Κ ί ΐ The data is processed to obtain a calibrated display; = "『 round out reference value; and s nested into two two Zhanfan, where R is calculated by u ' , G], B〗 The output reference is written into the carcass 3 1 that is not 30. Negative material transport processing unit 2 q Private — a computer with a computing program such as a personal electrical method 'can use a built-in unit including a storage unit 21 (such as ^ mouth body shell, ^ processing early yuan 20 at least h h Hard disk drive, magnetic disk or its like 22 packs of people's keys / entered in early 疋 22 and-output unit 23 '· its_ input unit spoon interface and other similar functions, and output unit 23 two devices 30 interface card 231, and the necessary 7G pieces for connection with the display 3. Such as the connector 2 3 2. The storage element 21 is mainly used to store the data of the standard reference color gamut and use CIE 1 (ηι = 1 In the preferred embodiment of the present invention, the two figures (see "Figure 2") are used as the so-called standard reference color gamut, where the X chromaticity coordinate is equivalent to the red γ chromaticity coordinate in the three primary lights. Corresponding to the ratio of green light, the z-chroma seatpost represents the ancient cause, ^ Second is the position of each wavelength of the horseshoe-shaped spectral trace in the figure ;: See: The red band of the spectrum is concentrated in the lower right of the figure, The green skin is segmented to see the upper part of θ, and the blue band is concentrated on the lower left of the track map. The white 153 in the center will Spectral traces indicate that the wavelengths of different colored light %% & @ 再 取 的 白光 点 Ε are connected, and the chroma book can be skinned into long points and the center area of the chromaticity map, such as "Di 9l mouth knife is various Different colors, picture 3 "does not. Therefore, 'If you can calculate page 12 of a certain color 200532637 V. Description of the invention (8) chromaticity coordinates X, y, you can clearly determine its color in the chromaticity diagram Color characteristics. For example, the chromaticity coordinate of cyan (C) is χ = 〇19〇2, corpse 0.2302, and its position in the chromaticity diagram is point A, which falls in the blue-green area. Of course, different colors have different The chromaticity coordinates of occupies different positions in the chromaticity diagram. Therefore, the positions of the points in the chromaticity diagram can represent the color characteristics of various colors. However, the chromaticity coordinates only specify the chromaticity of the color, but not the color. Brightness, so if you want to uniquely determine a color, you must also indicate its brightness characteristic 'that is, the size of brightness Y, and the size of the comprehensive chromaticity coordinates X, y, and 売 Y can be used to represent the current corresponding color temperature . And in the CIE 1931 xyY chromaticity diagram also includes Contains a color temperature curve (^ CD 丨 ... temperature Curve), which has several McCao points corresponding to a certain color temperature value, such as D93, Des, can be used as a reference basis for the coordinates corresponding to the color temperature. Η: 4Go to the picture of the WV book Invented a method for adjusting display color > JHL through the above-mentioned device, which includes the following steps: Output reference (0 ~ 255) * red and green of r2, g2, B2 = (RGB) ^ primary color light signal is displayed on display 30 ; ', 2 · Detection of display device 3 〇 3 shots ψ > θ 1
1931 χνΒ 可見光的色溫，並依據HE 色度座標（以下稱為第 斤仟之田則色▲的 及其亮料，換m、二钛表不為x2，y2) 為三原色光B二色度座標即 度座標，可表; 2; 2已知條件下的色 3. ^^2^l'iVG2，B2]； 色/皿的色度座標[x2，y2Y2 Ir2，g2，b2]1931 χνΒ The color temperature of visible light, and according to the HE chromaticity coordinate (hereinafter referred to as the "Kinata Noda ▲" and its bright materials, change m, titanium, the table is not x2, y2) is the three primary color light B chromaticity coordinates The degree coordinates can be expressed; 2; 2 colors under known conditions 3. ^^ 2 ^ l'iVG2, B2]; chromaticity coordinates of color / plate [x2, y2Y2 Ir2, g2, b2]
第13頁 200532637_ 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（Μ?)，將當前的色溫記錄轉換為 第一二刺激值（tristimulus value)” 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Des)所相應的色度座標（以下稱為第一色度 座標，表示為Xl，yi)及其亮度1，表示為 [xi, YiYi ]； 6·透過一轉置矩陣（Ml)將第一色度座標[\，y】Yi ] 轉換為第一 π三刺激值”巧，gi，b】； 7 ·透過下述公式（a )利用線性比例計算出相應於目標 色溫的三原色光訊號的輸出基準&，; ΐΊ /r2 = I /R2 ; ☆ /心=Gi /g2 ; h /b2 = B1XB2· . . - (a)； 8·結束並將獲得的輸出基準Ri，Gi，Bi寫入顯示器3〇的 色彩描述檔，當三原色光訊號的輸出基準心，&，& 接近目標色溫之三原色光訊號的輸出基準&，&，& 至某一容許程度時（簡言之就是先前已知輸出基準 (0〜255 )分別為R2, G2, B2的紅綠藍（RGB)三原色 光訊號與目標色溫相應之輸出基準&，G!，B!的誤差 達到一個預設的容許範圍之内），否則繼續下一步 9 ·以獲得的心，（^，Bi取代前述的R2，G2，B2，並且重覆 上述步驟。Page 13 200532637_ 5. Description of the invention (9) A computer-accessible storage unit 21 becomes a current color temperature record; 4 · A current matrix is used to convert the current color temperature record to the first two Stimulus value (tristimulus value) r2, g2, b2; 5 · Re-check the Cl E 1931 xyY chromaticity diagram to obtain the chromaticity coordinates (hereinafter referred to as the first color) corresponding to the target color temperature (assuming Des) to be adjusted. Degree coordinate, expressed as Xl, yi) and its brightness 1, expressed as [xi, YiYi]; 6. The first chromaticity coordinate [\, y] Yi] is converted to the first π through a transposed matrix (Ml) Tristimulus value ”, gi, b]; 7 Calculate the output reference of the three primary color light signals corresponding to the target color temperature by using the linear formula (a): &, ΐΊ / r2 = I / R2; ☆ / Heart = Gi / g2; h / b2 = B1XB2 ·..-(A); 8 · End and write the obtained output reference Ri, Gi, Bi to the color profile of the display 30. When the three primary color light signal output reference When the &, & approaches the output reference of the three primary color light signals of the target color temperature &, &, & to a certain allowable level ( In other words, the previously known output reference (0 ~ 255) is the red, green and blue (RGB) three primary color light signals of R2, G2, and B2, respectively. The output reference &, G !, B! Corresponding to the target color temperature has an error of a predetermined Set the tolerance range), otherwise continue to the next step 9 · to obtain the heart, (^, Bi replace the aforementioned R2, G2, B2, and repeat the above steps.
200532637 五、發明說明（10) ' 所明的二刺激值（t r i s t i m u 1 u s v a 1 u e )仍是可仿人眼 感觀的三個色彩刺激值，它可搭配到C I E標準照明體（d5〇 ) 下標準觀測者所看到的顏色。 依據上述的方法步驟，主要係透過第一”三刺激值π gi, b!和第_二刺激值” r*2，g2，N彼此的比例關係，來計 算出，到目標色溫之RGB的輸出基準Ri，Gi，b】，·而為了使最 後計算求得的RGB的輸出基準Ri，G" &能使顯示器3〇輻射出 的色溫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 心，G” B2和計算求得的輸出基準&，^&比較其誤差的方 式，來重新調校輸出至顯示器3〇的輸出基準心，直至 其間的誤差小於某一預設的範圍以内時才停止運算的方 以獲得較為正確的輸出基準R2, g2, b2，至於允許的 二則可以預先设定好，再將之儲存於 20的儲存單元21之中。 地主早兀200532637 V. Description of the invention (10) The two stimulus values (tristimu 1 usva 1 ue) are still three color stimulus values that can imitate the human eye. It can be used under the CIE standard illuminant (d5〇). Standard observer's color. According to the above method steps, the RGB output to the target color temperature is mainly calculated through the proportional relationship between the first "tristimulus value π gi, b! And the _second stimulus value" r * 2, g2, N. Reference Ri, Gi, b], and in order to make the final calculated RGB output reference Ri, G " & enable the color temperature radiated by the display 30 to reach a preset target color temperature, the aforementioned step 8 further includes A comparative judgment step> Steps to readjust the output to this way by repeatedly comparing the known output datum center, G "B2 and the calculated output datum &, ^ & The output reference center of the display 30 will stop calculation until the error is less than a certain preset range to obtain more accurate output reference R2, g2, b2. As for the allowable two, it can be set in advance. Then store it in storage unit 21 of 20. The landlord is early
本發明所揭露的方法的另一較佳實施例，更在上述的 方法中加入一微調的步驟，用以對最後求得的誤差小於某 一預設範圍的輸出基準匕，G2, B2再作進-步的微調；此-步 驟係直接藉由第-色度座標X1，yl(即為目標色溫在CIE 二3出 1 v:气的位置)和第二色度座標χ2,心(即為 輸出土卓R2，G2，B2已知條件下，顯示器3〇輕射出之 C;E :xyY色度圖中相應的位置)彼此間的相對二 係，直接透過增加或是減少輸出至顯示器3〇之 光之各別輸出基準R2，G2，B2的方式來進 ：原色In another preferred embodiment of the method disclosed in the present invention, a fine-tuning step is added to the above-mentioned method to output the final reference dagger whose error is less than a certain preset range. G2, B2 Further fine-tuning; this step is directly based on the first chromaticity coordinate X1, yl (that is, the position of the target color temperature at CIE 23, 1 v: gas) and the second chromaticity coordinate χ2, heart (that is, Output Toto R2, G2, B2 Under known conditions, the display 3 lightly emits C; E: the corresponding position in the xyY chromaticity diagram) The relative two lines between each other, directly increase or decrease the output to the display 3〇 The respective ways of the light to output the reference R2, G2, B2 come in: primary colors
第15頁 括 較佳實施例方法的步驟包 K取得待調校之目標色溫（假設為D65)在CIE 1931 xf色度®中相應的色度座標（以下稱為第—色度座 t，y;，並儲存第一色度座 於儲 存早兀2 1 ; 2 ·量測顯示器3 0輻射屮夕可g μ v a # @ + 可見光的色溫，在CIE 1931 xyY色度圖中取得相雁协旦、日t以 ^ ^ ^ . 應於里測所得之當前色溫的色 度座標（以下稱為第-务译#你 、 J巴 一 弟一色度座標X2，yP，並儲存第 一色度座&X2，y2於儲存單元Μ ; 3.以第-色度座標Xi，y^新原點，判斷第二色戶 座標x2，y2至新原點之方向广 可以透過下列公式Γ h、、仓 > 斤 ^ '(b)進仃間單的座標運算，其紝 果以向夏 一7^ 來判斷； 、、° (b) 4 ·依據結果向量 ^ τ Y 與 CIE1931xyY 色度圖 φ ，G，Β的为佈關係調校輪出 ^ 中 是針對各別輸出至顯示ρ 3。的丰2 A β:，句話就 G2，B2進行增加或是減少的處理，· 2， 5·結束並將調校後的輪七其進 ，的輸出基準R】，Gi，Bi，將設為目^票色溫之 顯示m ίΐ沾名〜知、+、执 山丞+KI，S，Β〗寫入 溫接；： 达擒’當重新量測顯示器30之色 k目軚色溫達到一個預設的容許範圍之内，否Page 15 includes the steps of the method of the preferred embodiment, including obtaining the target color temperature to be adjusted (assume D65) in CIE 1931 xf Chroma® corresponding chromaticity coordinates (hereinafter referred to as the first chromaticity t, y ;, And store the first chromaticity seat in the storage space 2 1; 2 · Measure the display 30 irradiance g μ va # @ + the color temperature of visible light, obtained in the CIE 1931 xyY chromaticity diagram , Day t is ^ ^ ^. The chromaticity coordinates of the current color temperature (hereinafter referred to as the first-service translation # 你, J 巴 一 弟 一 chromaticity coordinates X2, yP), which should be measured in li, and store the first chromaticity seat & X2, y2 in the storage unit M; 3. Use the -th chromaticity coordinates Xi, y ^ new origin to determine the direction of the second color household coordinate x2, y2 to the new origin. The following formula can be used: Γ h, 仓 > ^ '(B) The coordinate calculation of a single order, the results are judged by Xiang Xia 7 ^; ,, ° (b) 4 · According to the result vector ^ τ Y and CIE1931xyY chromaticity diagram φ, G, Β The adjustment for the cloth relationship adjustment round out ^ is for each output to show the abundance 2 A β :, the sentence to increase or decrease G2, B2 processing, · 2, 5 · end and After the adjusted round is advanced, the output reference R], Gi, Bi, will be set to display the color temperature of the target m m ίΐ 名 名 ~ 知 、 + 、 执 山 丞 + KI, S, B〗 Write Warm connection: "Darken 'when the color of the display 30 and the color of the display 30 are within a preset allowable range, no
200532637 五、發明說明（12) 則繼續下一步驟； 6.重新以調校後的輸出基準R2, G2, B2輸出至顯示器30， 並重覆上述步驟2。200532637 V. Description of the invention (12) Continue to the next step; 6. Re-output the adjusted output reference R2, G2, B2 to the display 30, and repeat step 2 above.
茲以一例子說明此一微調的過程，假設待調校之目標 色溫為6 50 0K ° (D65)，在CIE 1931 xyY色度圖中相應的色度 座標為X 1，y 1 ’而ϊ測顯不為3 0輕射出之色溫獲付其在C I E 1931 xyY色度圖中相應的色度座標為x2, y2，其相對的位置 關係以及向量 一^~> 如「第6圖」所示，依此向量一 的趨勢將以分別減少綠光（G )以及藍光（Β)之輸出基準G2，Β2 的方式來對輸出基準R2，G2，Β2進行微調，經過微調後的輸出 基準R2, G2, Β2被輸出至顯示器30，然後重新量測顯示器30的 色溫是否接近目標色温，以決定是否再重覆此一微調的步 驟0An example is used to illustrate this fine-tuning process. Assuming that the target color temperature to be adjusted is 6 50 0K ° (D65), the corresponding chromaticity coordinates in the CIE 1931 xyY chromaticity diagram are X 1, y 1 ' The color temperature of the light shot that is not 30 is paid for its corresponding chromaticity coordinates x2, y2 in the CIE 1931 xyY chromaticity diagram. The relative position relationship and vector ^ ~ > are shown in "Figure 6" According to this trend of vector one, the output reference R2, G2, and B2 will be fine-tuned by reducing the output reference G2 and B2 of green light (G) and blue light (B), and the output reference R2, G2 after fine-tuning , Β2 is output to the display 30, and then the color temperature of the display 30 is re-measured to be close to the target color temperature to determine whether to repeat this fine-tuning step 0
第17頁 200532637 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 ...........輸入單元 23 ...........輸出單元 231 ..........介面卡 232 ..........連接器 30 ...........顯示器 31 ...........軔體 40...........資料寫入單元Page 17 200532637 Brief description of the drawings [Simplified description of the drawings] Figure 1 is a functional block diagram of the device of the present invention. Figure 2 shows the CIE 1931 xyY chromaticity diagram. Figure 3 is a CIE 1931 xyY chromaticity diagram showing different color gamut positions. FIG. 4 is a method step diagram of the present invention. FIG. 5 is a step diagram of another preferred embodiment of the method disclosed in the present invention. Fig. 6 is a positional relationship diagram of chromaticity coordinates X i, y 1 and x2, y2 in the fine-tuning example. [Illustration of Graphical Symbols] 10 .............. colorimeter 20 ........... data operation processing unit 21 ......... .. storage unit 22 ........... input unit 23 ........... output unit 231 .......... interface card 232 .... ... connector 30 ........... display 31 ........... body 40 ........... data writing unit
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| US9208750B2 (en) | 2013-05-13 | 2015-12-08 | Asustek Computer Inc. | Color temperature adjusting method of display device |
| TWI514368B (en) * | 2013-05-13 | 2015-12-21 | Asustek Comp Inc | Color temperature adjusting method of display device |
| CN113920961A (en) * | 2020-07-10 | 2022-01-11 | 苏州佳世达电通有限公司 | Display device and color adjustment method |
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| US9208750B2 (en) | 2013-05-13 | 2015-12-08 | Asustek Computer Inc. | Color temperature adjusting method of display device |
| TWI514368B (en) * | 2013-05-13 | 2015-12-21 | Asustek Comp Inc | Color temperature adjusting method of display device |
| CN113920961A (en) * | 2020-07-10 | 2022-01-11 | 苏州佳世达电通有限公司 | Display device and color adjustment method |
| CN113920961B (en) * | 2020-07-10 | 2023-03-03 | 苏州佳世达电通有限公司 | Display device and color adjustment method |
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