200813925 九、發明說明： 【發明所屬之技術領域】 一種顯示器圖像的資料儲存技術，尤指—種圖形資料 過驅動之儲錢£及其方法，用以減少對於儲存記憶體大 小的需求。 【先前技術】 …由於液晶顯示器的輕薄短小的特性，且比傳统c RT顯 不器更低的電力消耗’使得近年來液晶顯示器已逐漸取代 CRT顯示器。 液晶是-種有機化合物，具有液體和晶體之間的一中 性特性’且藉由電職溫纽變它_色錢光性。傳统 的液晶顯示器的配置包括··-液晶面板，一連接到液晶面 板的驅動電路’其巾該鶴電路巾包含—灰度電壓 路。 液晶面板由複數條閘線，和分別與閘線垂直地互相連 躺複數條資料線組成。每-像素由—薄膜電晶體(tft)、 :電容和一液晶電容所構成，液晶面板的每一像素進 對，紅色⑻、綠色(G)、和藍色⑻三原色的三 =二板顯示的一像素係由R、#B彩色滤 經由組合的方式不但可顯示彩色圖片，而 於二-二關粹的、工色、綠色、藍色和灰度色階。其中該T F T ==功能’其間極與閉線電性連接，受-間極驅 動電路所㈣；其源極與資騎電性連接，受-源極驅動 5 200813925 卜 制。該灰度電壓產生電路係連接到源極驅動電 路產生〜灰度電壓或一灰階參考電壓，係產生一液晶驅 動電壓的參考。 ，曰曰顯示器的運作方式是閘極驅動電路循序地掃描 面板每订的像素，在灰階參考電壓從灰度電壓產生電路 輸出後；原極驅動電路根據所輪入的R、G、β時序資料 產生七液晶驅動電壓。然後，源極驅動電路實行一運作， 以在每-人掃插施加所產生的液晶驅動電壓到面板。 • 自於液曰曰顯示器隨工業的發展傾向高速度的事實，現 有的方f係提高晝素中儲存電容和液晶電容的填充速度 導致和:南其驅動速度。這是因為如果從源極驅動電路所施 加的電壓有一高數值，儲存電容和液晶電容將很快地充 電，以提高液晶顯示器的總驅動電路。 、明參閱第1圖」所示，係過驅動之輸入/輸出之灰階 電壓不思、圖。面板上晝素所顯示出的輸出灰度值2不只依 據原圖像資料的輸入灰度值1，也利用前一圖框(frame)的 灰度電壓，利用查詢表格(l〇〇kUp丨❿卜)或換算的方式產生 過電壓之輸出灰度值2。過驅動技術(overc|rive tahnoiogy) 係透過增加影像資料之灰度值，加快TFT反應時間 (response time)，藉由較短的反應時間使晝面轉換更為順 暢。例如原始輸入之灰度值資料可在16.6ms使面版亮度 (brightness)到B21，而過驅動卻可在16.6ms使面版亮度到 提昇B31，藉此加快TFT反應時間與液晶的反轉時間，使 畫面轉換更為順暢。 6 200813925 ' 也因為此過驅動技術方式，所以驅動元件的記憶體的 容量需為原有的兩倍，用以分別儲存原始圖像資料 (original image data)及過驅動圖像資料（overdrive image data)。一般用於行動電話(mobile phone)顯示裝置之驅動元 件，傳統的做法是利用顯示面板上圖像資料的輸入與書素 掃描的非同步性，加入一外加記憶體於該驅動電路，使過 驅動圖像資料可以儲存於該外加記憶體，增加原始輪入影 像資料之灰度值’加快像素反應時間，使晝面轉換更為順 • 暢。 目前這種過_方式因為需加—外加域體於驅動 電路’藉此增加記憶體容量。然而，此方式讀會造成顯示 器產品的記憶體容量的需求太大而增加製造成本，也會使 驅動電路所需要的空間加大。 曰 【發明内容】 爰是，為解決上述之缺失，避免缺失存在，本發明在 =圖框資料中的影像資料之三原色資料轉換成YCbCr 及過驅動之二原色資料換成過驅動之YCbCr資料， 求，降低記憶體之成本:〜_控制㈣記憶體之需 為達上述之目的，本私日日 控制器之資料儲存方法，一㈣於顯示器之驅動 資料與影像㈣，且分別==係㈣像資料分為非影像 J傅存於一記憶體單元内部之一非 7 200813925 :像資料儲存區及一影像資料儲存區。其 之二原色貧料轉換成YCbCr資料 貝， =影像資料之三原色資料及前—圖框之三原:== 料，且將比較後之三原色資料轉換成過驅動YCbcr；^· 辄鶴YCbCf諸，將㈣料依= 縮取樣及結合，且儲存於影像資料儲存區。。200813925 IX. Description of the invention: [Technical field of invention] A data storage technology for display images, in particular, a graphic data over-driven piggy bank and its method for reducing the need for storage memory size. [Prior Art] ... Due to the thin and short characteristics of liquid crystal displays, and lower power consumption than conventional c RT displays, liquid crystal displays have gradually replaced CRT displays in recent years. The liquid crystal is an organic compound having a neutral property between the liquid and the crystal and is changed by the electric temperature. The conventional liquid crystal display configuration includes a liquid crystal panel, a driving circuit connected to the liquid crystal panel, and a scarf circuit including a gray voltage circuit. The liquid crystal panel is composed of a plurality of gate lines, and a plurality of data lines which are respectively connected to each other perpendicularly to the gate lines. Each pixel consists of a thin film transistor (tft), a capacitor, and a liquid crystal capacitor. Each pixel of the liquid crystal panel is paired, and three (two) colors of red (8), green (G), and blue (8) are displayed. A pixel system is combined with R and #B color filters to display not only color pictures, but also two-two levels, work color, green, blue, and gray scale. Wherein the T F T == function 'between the pole and the closed line electrically connected, the receiving-interpole driving circuit (4); the source is connected with the power riding, and the source-source driving 5 200813925. The gray voltage generating circuit is connected to the source driving circuit to generate a gray voltage or a gray scale reference voltage, which is a reference for generating a liquid crystal driving voltage. The operation mode of the 曰曰 display is that the gate driving circuit sequentially scans each pixel of the panel after the gray scale reference voltage is output from the gray voltage generating circuit; the original driving circuit is based on the R, G, and β timings that are rotated. The data produces seven liquid crystal drive voltages. Then, the source driving circuit performs an operation to apply the generated liquid crystal driving voltage to the panel in each of the human sweeps. • Since the fact that liquid helium displays tend to be high speed with the development of the industry, the existing side f is to increase the filling speed of the storage capacitors and liquid crystal capacitors in the pixel and cause: South its driving speed. This is because if the voltage applied from the source driving circuit has a high value, the storage capacitor and the liquid crystal capacitor will be charged quickly to increase the total driving circuit of the liquid crystal display. As shown in Fig. 1, the gray-scale voltage of the input/output of the drive is not considered. The output gray value 2 displayed by the panel on the panel is not only based on the input gray value 1 of the original image data, but also the gray voltage of the previous frame (frame), using the query table (l〇〇kUp丨❿) Bu) or conversion method produces an output gray value of 2 for overvoltage. The overdrive technology (overc|rive tahnoiogy) speeds up the TFT response time by increasing the gray value of the image data, and smoothes the kneading transition by a shorter reaction time. For example, the original input gray value data can make the brightness of the plate to B21 at 16.6ms, while the overdrive can increase the brightness of the plate to 16.1ms at 16.6ms, thereby accelerating the TFT reaction time and the liquid crystal reversal time. To make the screen transition smoother. 6 200813925 ' Because of this drive technology, the memory capacity of the drive components must be twice that of the original to store the original image data and the overdrive image data. ). Generally used for driving components of mobile phone display devices, the conventional method is to use the input of image data on the display panel and the non-synchronization of the pixel scanning, adding an external memory to the driving circuit to make the driving The image data can be stored in the external memory, and the gray value of the original wheeled image data is increased to speed up the pixel reaction time, so that the surface conversion is smoother and smoother. At present, this method has to increase the memory capacity by adding - adding a domain to the driving circuit. However, this mode of reading causes a large demand for the memory capacity of the display product and increases the manufacturing cost, which also increases the space required for the driving circuit.曰 [Summary of the Invention] In order to solve the above-mentioned defects and avoid the existence of the missing, the three primary color data of the image data in the frame data of the present invention is converted into YCbCr and the over-driven two primary color data are replaced by the overdriven YCbCr data. Find, reduce the cost of memory: ~_ control (four) memory needs for the above purposes, the data storage method of this private day controller, one (four) on the display of driving data and images (four), and == system (four) The image data is divided into non-image J Fu in one of the internal memory units of a non-2008 200813925: image data storage area and an image data storage area. The two primary color poor materials are converted into YCbCr data shells, = the three primary color data of the image data and the former - frame three original: == materials, and the three primary color data are converted into overdriven YCbcr; ^· 辄 crane YCbCf, The (4) materials are sampled and combined according to the shrinkage and stored in the image data storage area. .
’、:、Y所代表的意義是亮度(luminance)，而eb ι &所代表的意義是彩度（ehn)min_)，本發明針 ==的¥成份，透過-取樣比例的取樣壓：The meaning represented by ',:, Y is luminance, and the meaning represented by eb ι & is chroma (ehn) min_), the ¥ component of the needle == of the present invention, and the sampling pressure of the transmission-sampling ratio:
=存於·體模組内，減少驅動控制器所需記憶 的大小。 T U 彳法之實現係、改變顯示器之驅動控制器内之 _ ^2 ，本發明之儲存結構包括有一記憶體單元，其内 :::一非影像資料儲存區及-影像資料儲存區；-第一 =工器’其具有兩輸人端，—輸人端接人 ㈣，且輸出資料至該非影像資料= *轉換單70接入目前圖像圖框（圖框N)之三原色 ’ n原色㈣轉換成 YCbCr資料； 弟:轉換單兀透過_查詢表格比較目前圖像圖框（圖 =)及則—圖框（圖框N])之三原色之影像資料，且將比 料:Y之過驅動二原色(R’G’B，)資料轉換成過驅動YCbCr資 出：=:)資:資:，單元用以接入第-轉換單元輸 、抖及弟二轉換單元輸出之過驅動YCbCr 8 200813925 貝料’將兩:#料依視訊壓縮標準㈣取樣及結合；再將錄 ==輪人到該第—多卫器之另—輸人端，透過該第〆 ί. Γ:·至該影像貢料儲存區。其中，該壓縮取樣係擇自 r _4 Cr—4 · 2 . 2、Y : Cb : Cr=4 : 2 : 0 及 Y : Cb : i f中—取樣演算規則。 次极，_一 圖框之YCbCr資料及過驅動YCbCr #碼單元依前面原視訊壓縮標準解壓， 广—第—轉換單元將YCbCr資料轉換成前一圖 框之二原色之影像資料至該查詢表格。 ：接二仏體單疋之儲存資料，透過-第二多工器 單元將影像資料儲存區之之資料;及-解麗轉換 出至該第二多工器另一衿=4轉換成三原色(腿)資料輸 影像資料與影像資料傳n減’該第二多工器將# 顯不元件。 【實施方式】 明如ΐ有關本發明之詳細内容及技術說明，現配合圖式說 造乂類種人=是因為光線有不同波長: 特別強烈’只要適當調整這2插目】對其中二種波長的感父 類感受到『幾乎』所有的顏7 線的強度’就可以讓人 色(RGB)，就是紅(吟…色。延三個顏色稱為光的三原 )、、、彔(green)’i(blue)。所有的彩色 9 200813925 電視機、螢幕都具備產生這三種基本光線的發光裝置。因 為這三種光線的混合幾乎可以表示出所有的顏色，因此電 腦裡頭就用三原色（RGB)的數位資料值的大小來標示顏 色，母個顏色用8bits來記錄，可以有〇〜255，共256種亮 度的變化，三種乘起來就有一千六百多萬種變化，這也^ 我們常聽到的24 bit全彩。 而YCbCr育料中γ資料即是由彩色轉換成灰階影像 的灰階值或稱亮度值，而其轉換公式主要是依據人類的眼 _ 睛對於紅、綠、藍三原色(RGB)的不同敏感度而來，其中 係數值越大則表示人的眼睛對於該顏色較為敏感，所以三 種顏色之敏感度依序為綠色（0.587)、紅色（0.299)、藍色 (0.114)。所以，一般三原色(RGB)資料轉換成YCbCr資 料之轉換計算關係如下：= stored in the body module, reducing the size of the memory required to drive the controller. The implementation of the TU method, changing the drive controller of the display _ ^ 2, the storage structure of the present invention comprises a memory unit, wherein:: a non-image data storage area and - image data storage area; - One = worker's has two input terminals, - the input terminal is connected (four), and the data is output to the non-image data = * conversion sheet 70 is connected to the three primary colors of the current image frame (frame N) 'n primary colors (four) Convert to YCbCr data; Brother: Convert the single image through the _ query table to compare the image data of the three primary colors of the current image frame (Fig. =) and then - the frame (frame N), and the comparison material: Y overdrive The two primary colors (R'G'B,) data are converted into over-driven YCbCr capital: =:): capital:, the unit is used to access the output of the first-conversion unit, the output of the shake and the output of the second conversion unit YCbCr 8 200813925 Beakers' will be two: #料 according to the video compression standard (four) sampling and combination; then will record == turn people to the first - multi-guards of the other - the input end, through the third . .. 至: Image tribute storage area. Wherein, the compressed sampling system is selected from r _4 Cr—4 · 2 . 2. Y : Cb : Cr=4 : 2 : 0 and Y : Cb : i f - sampling calculation rule. The second pole, the YCbCr data of the frame and the overdrive YCbCr # code unit are decompressed according to the previous original video compression standard, and the wide-first conversion unit converts the YCbCr data into the image data of the two primary colors of the previous frame to the inquiry form. . : storing the data of the two-dimensional unit, converting the data of the image data storage area through the second multiplexer unit; and converting the solution to the second multiplexer and converting the other to the three primary colors (= Leg) data transmission image data and image data transmission n minus 'the second multiplexer will # display components. [Embodiment] As for the details and technical description of the present invention, it is said that the genus of the genus is based on the pattern = because the light has different wavelengths: particularly strong 'as long as the two plugs are properly adjusted" The sense of wavelength of the paternal feels the "almost" the intensity of all the 7-line lines, which can make people's colors (RGB), that is, red (吟... color. The three colors are called the three originals of light), and 彔 (green) ) 'i(blue). All colors 9 200813925 TVs and screens have illuminators that produce these three basic lights. Because the mixing of these three kinds of light can almost represent all the colors, the size of the digital data values of the three primary colors (RGB) is used to indicate the color in the computer. The mother color is recorded with 8 bits, which can be 〇~255, a total of 256 kinds. The change in brightness, the three multiplied by more than 16 million kinds of changes, this ^ we often hear the 24-bit full color. The γ data in YCbCr feed is the gray scale value or brightness value converted from gray color to gray scale image, and its conversion formula is mainly based on the human eye's different sensitivity to red, green and blue primary colors (RGB). Degrees, where the larger the coefficient value means that the human eye is more sensitive to the color, so the sensitivity of the three colors is green (0.587), red (0.299), and blue (0.114). Therefore, the conversion calculation relationship of the general three primary color (RGB) data into YCbCr data is as follows:
Y = 0.299R+0.587G+0.114B Cb=-0.168R-0.331G-0.499B Cr= 0.500R-0.419G-0.081B 而YCbCr資料轉換成三原色(RGB)資料之轉換計算 關係如下： R= Y+ 104020(Cr-128) G= Y-0.3441(Cb-128)-0.7141(Cr-128) B = Y+ 107720(Cb-128) 對於人眼來說雖然對低頻的資料比對高頻的資料具 有更高之敏感度，事實上人類的眼睛對亮度的改變也比對 色彩的改變要來得敏感許多。因此，在顯示器的應用上， 200813925 由趣說來都是只有處理灰階及全彩的影像，全彩的影像是 tb Y^&二個顏色成份(component)組合而成，而灰 $的影像由於只有亮度而無色彩可言，因此只有Y資料一 7成份。因為’ Y資料所代表的意義是亮度，而Cb和Cr =代表的意義是彩度資料，也就是說Y資料的資料是比較 寰要的。 圖 _晴參閱「第2圖」所示，係本發明之儲存結構之示意 =本發月主要就是針對上述原理，於是提出前述之 、、、°構，太發明总 結構二你—種設置於顯示器之驅動控制器内之儲存 八，包括有一記憶體單元15，該記憶體單元15内部區 透^一非影像資料儲存區151及一影像資料儲存區152 ; _像圖框=:::之第-多工器n’一輸入端接入目前 讀祚影像資料心圖框N)之非影像貧料，且輪出資料至 與結==區151;而另一輸入端用以接收被轉換 之影像資===將影像㈣傳至該記憶體單元^ 131，第#料：皮儲存之前，先被傳至一第-轉換單元 RGBr " 轉換早元131接入目前圖像圖框之二 =圖框N)之影像資料，且將三原色RG YCbCr資料；而一# 貝杆轉換成 比心前7換單元132透過—查詢表格13 Μ 圖框及前一圖框之三原色之原私## & 且將比較後的過驅動三原色資料R，G，B，轉換:貧 Q>Cr資料Y，Ch，r， 、成過驅動 以接入m ^，然後，透過一資料編碼單元141 入弟—轉換單元131輸出之YCbCr資料，及第」用 禾一轉換 11 200813925 ψ . 單元132輸出之過驅動YCbCr資料Y’Cb’Cr，，將兩資料 依視訊壓縮標準（MPEG : Motion Pictures Expert Group)壓 縮取樣及結合，其中，該壓縮取樣係擇自γ : Cb : Cr= 4 : 2: 2、Y: Cb: Cr=4: 2: 〇及 Y: Cb : Cr=4:1:1 之其中 一取樣演算規則，且結合之資料輪入到該第一多工器η 之另一輸入端，透過該第一多工器u傳至該影像資料儲 存區152。 m 次其中，前一圖框（圖框N-1)之三原色之影像資料係影 儲存區152内前一圖框之原始YCbCr資料，透過一 貝料5睪碼單元142依原視訊壓縮標準解壓，再透過一第三 =單元133，將YCbCr資料轉換成前-圖框的三原色: 影像資料。 巴之 旦再參閱「第3圖」所示，係圖像資料分為非影像及 ^貝料之不意圖。該記憶體單元15内之非影像資料儲 子:151係用以存放原始圖像圖框中非影像之三原色資料 ⑩仏g、B’而影像資料儲存11 152存放目前圖像圖框中为 =像資料被壓縮取樣之YCbCrf料，及過驅動後被壓縮 =樣之過驅動YCbCr資料Y，Cb，Cr，。如經過γ : “ ： & 次1 1 · 1 (4:2:〇)的取樣壓縮，則原始被壓縮取樣之YCbCr 二，，-組CbCr資料為四個像素的γ資料所用之資料將 曰子放於前，另被過驅動之過驅動YCbCr資料 依續存放其後。 曰 明再參閱「第4圖」所示，係本發明之影像資料儲存 12 200813925 之不思圖。以一顧录哭夕/1 丄 影像資料經過Y = 0.299R+0.587G+0.114B Cb=-0.168R-0.331G-0.499B Cr= 0.500R-0.419G-0.081B The conversion calculation of YCbCr data into three primary colors (RGB) data is as follows: R= Y+ 104020(Cr-128) G= Y-0.3441(Cb-128)-0.7141(Cr-128) B = Y+ 107720(Cb-128) For the human eye, although the data for low frequency is more than the data for high frequency High sensitivity, in fact, the human eye's change in brightness is also much more sensitive than the change in color. Therefore, in the application of the display, 200813925 is interesting to say that only the grayscale and full color images are processed. The full color image is a combination of two color components (tb Y^& Since the image has only brightness and no color, only the Y material is a 7 component. Because the meaning of the Y data is brightness, and the meaning of Cb and Cr = is chroma data, which means that the data of Y data is more important. Figure _ Qing see "Figure 2", which is a schematic diagram of the storage structure of the present invention. This is mainly for the above principle, so the above-mentioned structure, the structure of the structure, and the general structure of the invention are set. The storage device 8 of the display controller includes a memory unit 15 having an internal area through a non-image data storage area 151 and an image data storage area 152; _ frame =::: The first multiplexer n' input is connected to the non-image poor material of the current read image data frame N), and the data is rotated to the node == area 151; and the other input is used for receiving and being converted. Image === Transfer image (4) to the memory unit ^ 131, No. # material: before storage, first transferred to a first-conversion unit RGBr " Convert early 131 to access the current image frame 2 = frame N) image data, and the three primary colors RG YCbCr data; and a # bee bar converted to the front of the heart 7 change unit 132 through - query form 13 Μ frame and the previous frame of the three primary colors of the original private # # & and will compare the over-driven three primary color data R, G, B, conversion: poor Q>Cr data Y, Ch, r, , is overdriven to access m ^, then, through a data encoding unit 141, the YCbCr data outputted by the conversion-converting unit 131, and the first-in-one conversion 11 200813925 ψ. The over-driven YCbCr data output by the unit 132 Y'Cb'Cr, the two data compression sampling and combining according to the MPEG (Motion Pictures Expert Group), wherein the compressed sampling is selected from γ : Cb : Cr = 4 : 2: 2, Y: Cb : Cr=4: 2: 〇 and Y: Cb: Cr=4:1:1 one of the sampling calculation rules, and the combined data is rounded to the other input end of the first multiplexer η, through the first A multiplexer u is transmitted to the image data storage area 152. m times, the image data of the three primary colors of the previous frame (frame N-1) is the original YCbCr data of the previous frame in the shadow storage area 152, and is decompressed by the original video compression standard by a bedding 5 睪 code unit 142. Then, through a third=unit 133, the YCbCr data is converted into the three primary colors of the front-frame: image data. In addition, as shown in "Figure 3", the image data is divided into non-image and bedding. The non-image data storage in the memory unit 15: 151 is used to store the three primary color data 10仏g, B' of the non-image in the original image frame, and the image data storage 11 152 is stored in the current image frame = The YCbCrf material, which is compressed and sampled, is compressed and overdriven, and the YCbCr data Y, Cb, Cr, is driven. If the sample is compressed by γ : " : && 1 1 · 1 (4:2: 〇), the data of the YCbCr 2, and -CbCr data of the original compressed sample is γ data of four pixels. Before being placed in the sub-driver, the YCbCr data is driven by the driver. The description of the image data storage 12 200813925 of the present invention is shown in FIG. Taking a picture of crying eve / 1 丄
Lb· 〇s4:丨：丨（4:2:〇)的取樣壓縮後， ^料儲存區152中四組原始被壓縮取樣之YCbCr 二，Cr及。四組過驅動後被壓縮取樣之YCbCr資料 所以在影像資料儲After the sample compression of Lb·〇s4:丨:丨(4:2:〇), four sets of YCbCr 2, Cr and are originally compressed and sampled in the material storage area 152. Four groups of YCbCr data that have been compressed and sampled after being driven, so in the image data storage
樣’透過増加影:J料、::::料及過驅之資料做壓縮取 及過驅之資料做壓縮取樣 了了原始貝枓 示器驅動㈣器對記憶體·到過鶴技術之顯 而，該記憶體單元15=;降低記憶體之成本。 工器17之輪入端接入—非旦人存之貝料再透過-第二多 _)資料;及一解壓轉換C存區」51之三原色 之YCbCr資料轉換成三原二^將影像資料儲存區152 器17另-輪人端；藉此，HG二^料輸出至該第二多工 與影像資料掃瞄輸出傳至〜一夕工器17將非影像資料 本發明提出一種過驅動圖:：：。 之方法係將圖像資料分為非巧次、儲存方法，本發明 儲存於記憶體單元15内部影像資料，且分別 像資料儲存區152。其中，誃？^貝料儲存區151及影 資料直接儲存於影像資料儲;^ :像貧料之三原色(RGB) 原色資料轉換成YCbCr資料，品、51 ’而該影像資料之三 影像資料之三原色#料 7過查詢表格12比較該 "框之三原色之影像資 13 200813925 零 ' 料，且將比較後之二原色資料轉換成過驅動Ycbcr資料 Y’Cb’Cr’ ；及將YCbCr資料及過驅動YCbCr資料依視訊 壓縮標準壓縮取樣及結合，且儲存於影像資料儲存區152。 以4x4組三原色RGB資料之圖像圖框為例（如「第4 圖」所示），在習知的過驅動模式中，記憶體容量除原有 16x3=48位元用以儲存原始三原色rgb資料，尚需要一相 同大小的記憶體容量（16x3=48位元）用以儲存過驅動之三 原色R G B資料，所以當顯示器用到過驅動技術時需原有 ⑩ 的兩倍的記憶體容量’用以分別儲存原始圖像資料 (original image data)及過驅動圖像資料（overdrive image data)，共需96位元用以儲存過驅動技術之圖像資料。 而本發明係將三原色（RGB)資料轉換先行轉換成 YCbCr資料，然後經過如Y : Cb : Cr=4 : 2 : 2(2山1)或γ : Cb : Cr= 4:1:1(4:2:0)其中一取樣比例的取樣壓縮，以γ : Cb : Cr = 4 · 1 · 1(4:2:0)的取樣壓縮為例，本發明中四個 Y資料共用同一組Cb及Cr資料；而過驅動之圖像資料 ⑩ （丫，01)，(>，)也是四個丫，資料共用同一組（：1)，及（^，資料。所 以本發明之過驅動影像資料之儲存所需大小將如「第4圖」 所示，只需如同無過驅動動模式時一樣的48位元記憶體 空間就足夠，所以一樣的圖像資料將比習知的過驅動模式 省掉二分之一儲存空間。 本發明將將圖框資料中的影像資料之原始三原色資 料及過驅動三原色資料分別轉換成YCbCr資料格式，並依 視訊壓縮標準壓縮取樣，再儲存於顯示器之驅動控制器的 14 200813925 ' 記憶體，藉此有效的減少對記憶體容量的需求，降低過驅 動模式對記憶體的儲存空間要求，讓原有的記憶體空間就 可以儲存過驅動之圖像資料，降低生產上記憶體之成本。 惟上述僅為本發明之較佳實施例而已，並非用來限定 本發明實施之範圍。即凡依本發明申請專利範圍所做的均 等變化與修飾，皆為本發明專利範圍所涵蓋。 15 200813925 【圖式簡單說明】 第1圖，係過驅動之輸入/輸出之灰階電壓示意圖。 第2圖，係本發明之儲存結構之示意圖。 第3圖，係圖像資料分為非影像及影像資料之示意圖。 第4圖，係本發明之影像資料儲存之示意圖。 【主要元件符號說明】 I :輸入灰度值 • 2:輸出灰度值 II :第一多工器 12 :查詢表格 131 :第一轉換單元 132 :第二轉換單元 133 :第三轉換單元 141 :資料編碼單元 142 :資料譯碼單元 • 15 :記憶體單元 151 :非影像資料儲存區 152 :影像資料儲存區 17 ·•第二多工器 16 :解壓轉換單元 20 :顯示元件 16Sample 'through the 増 影 影: J material, :::: material and overdrive data to do compression and overdrive data to do the compression sampling of the original Beibei display drive (four) on the memory · The memory unit 15=; reduces the cost of the memory. The access of the workpiece 17 is accessed by the wheel-input--the non-denogenous material is re-transmitted-the second-larger _) data; and the decompressed conversion C storage area" 51 of the three primary colors of the YCbCr data is converted into three original two ^ image data storage The area 152 is connected to the other side of the wheel; thereby, the HG output is output to the second multiplex and the image data scanning output is transmitted to the icy machine. The non-image data of the present invention provides an overdrive diagram: ::. The method divides the image data into non-smart and storage methods, and the present invention stores the image data stored in the memory unit 15 and is respectively stored in the image storage area 152. Among them, what? ^Beet storage area 151 and shadow data are directly stored in the image data storage; ^: the three primary colors (RGB) of the poor material are converted into YCbCr data, the product, 51 ' and the three primary colors of the image data of the three primary colors #料7 After querying the form 12, the image of the three primary colors of the frame is compared with the 2008 priming material, and the second primary color data is converted into the overdriven Ycbcr data Y'Cb'Cr'; and the YCbCr data and the overdriven YCbCr data are used. The sampling and combining are compressed according to the video compression standard and stored in the image data storage area 152. Taking an image frame of 4x4 sets of RGB data of three primary colors as an example (as shown in "4th figure"), in the conventional overdrive mode, the memory capacity is divided by the original 16x3=48 bits for storing the original three primary colors rgb. For the data, a memory capacity of the same size (16x3=48 bits) is needed to store the RGB data of the three primary colors of the overdrive, so when the display uses overdrive technology, it needs twice the memory capacity of the original 10' To store original image data and overdrive image data separately, a total of 96 bits are needed to store the image data of the overdrive technology. In the present invention, the conversion of the three primary colors (RGB) data is first converted into YCbCr data, and then, for example, Y: Cb : Cr=4 : 2 : 2 (2 mountains 1) or γ : Cb : Cr = 4:1:1 (4 :2:0) sampling compression of one sampling ratio, taking the sampling compression of γ : Cb : Cr = 4 · 1 · 1 (4:2:0) as an example, in the present invention, the four Y materials share the same group Cb and Cr data; and the image data 10 (丫, 01), (>,) that is overdriven is also four 丫, the data shares the same group (: 1), and (^, data. Therefore, the overdrive image data of the present invention The required storage size will be as shown in Figure 4, just as 48-bit memory space is the same as when there is no overdrive mode, so the same image data will be saved than the conventional overdrive mode. One-half of the storage space is lost. The invention converts the original three primary color data and the over-driven three primary color data of the image data into the YCbCr data format, and compresses the sampling according to the video compression standard, and then stores the driving control on the display. 14 200813925 ' Memory, which effectively reduces the need for memory capacity and reduces overdrive The mode requires storage space for the memory, so that the original memory space can store the over-driven image data and reduce the cost of the memory on the production. However, the above is only a preferred embodiment of the present invention, and is not used for The scope of the present invention is defined by the scope of the invention, which is covered by the scope of the invention. 15 200813925 [Simple description of the diagram] Figure 1 is the input of the drive / Schematic diagram of the gray scale voltage of the output. Fig. 2 is a schematic diagram of the storage structure of the present invention. Fig. 3 is a schematic diagram of the image data divided into non-images and image data. Fig. 4 is a view of the image data storage of the present invention. Schematic diagram [Description of main component symbols] I: Input gray value • 2: Output gray value II: First multiplexer 12: Query table 131: First conversion unit 132: Second conversion unit 133: Third conversion unit 141: data encoding unit 142: data decoding unit • 15 : memory unit 151 : non-image data storage area 152 : image data storage area 17 • second multiplexer 16 : decompression conversion unit 20 : Display component 16