經濟部智慧財產局員工消費合作社印製 514858 A7 B7___ 五、發明說明（1 ) 技術領域 本發明係相關於一種顯示裝置，特別是包括液晶裝置 L· C D之電腦顯示裝置。 發明背景 各種類型之顯示器或監視器係使用在電腦系統中。此 些包括陰極射線管（C R T )顯示器以及低功率、較輕的 液晶裝置（L C D )顯示器。 C R T顯示器使用掃瞄面（raster)爲基礎的方式，其 中係以多數列自螢幕之上方至下方而自左至右橫跨螢幕而 移動。當電子束以此掃瞄面圖案（pattern)而移動時，其 強度經改變而經由對螢幕之每個部份的光線予以改變強度 而產生營幕影像。 在液晶顯示器中，不使用該掃瞄面方式，而是使用提 供圖素陣列於L CD螢幕中。在螢幕上之每個XY座標， 係對應於可一需要改變強度之個別圖素，而一個圖素接著 一個圖素的產生想要的螢幕影像。 已開發出螢幕影像解析度之各種工業標準。每個此種 工業標準具有其獨特之特性，包括解析度（每條線之圖素 數目，以及每個螢幕上之線數目），一對應水平掃瞄頻率 以及對應之垂直掃瞄頻率。以下所示之表格1，係展示各 種當紅的工業標準之相關參數。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -4- _______L I__^ I · I I I ---丨^^ .丨 I I —^· I I N I (請先閱讀背面之注意事項再填寫本頁) 514858 經濟部智慧財產局員工消費合作社印製 A7 _B7 、發明說明（2) 表1Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 514858 A7 B7___ V. Description of the Invention (1) Technical Field The present invention relates to a display device, particularly a computer display device including a liquid crystal device L · CD. BACKGROUND OF THE INVENTION Various types of displays or monitors are used in computer systems. These include cathode ray tube (C R T) displays and low power, lighter liquid crystal device (LC D) displays. CRT displays use a raster-based approach, where most of them move across the screen from top to bottom of the screen and from left to right. When the electron beam is moved by this scanning surface pattern, its intensity is changed and the intensity of light in each part of the screen is changed to generate a camp screen image. In LCD monitors, the scanning surface method is not used, but the pixel array provided in the L CD screen is used. Each XY coordinate on the screen corresponds to an individual pixel whose intensity can be changed, and one pixel after another produces the desired screen image. Various industry standards for screen image resolution have been developed. Each such industry standard has unique characteristics, including resolution (the number of pixels per line, and the number of lines on each screen), a corresponding horizontal scanning frequency and a corresponding vertical scanning frequency. Table 1 below shows the relevant parameters of various popular industry standards. This paper size is in accordance with Chinese National Standard (CNS) A4 (210 X 297 mm) -4- _______L I __ ^ I · III --- 丨 ^^. 丨 II — ^ · IINI (Please read the precautions on the back before (Fill in this page) 514858 A7 _B7 printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs, the description of the invention (2) Table 1
解析度（ 點 X線） 水平頻率 垂直頻率 圖形模式 640 X 350 31.5 kHz 70 Hz MCGA 640 X 480 31.5 kHz 60 Hz VGA-G 640 X 480 37.5 kHz 75 Hz EVGA 640 X 480 43.3 kHz 85 Hz VESA 720 X 400 31.5 kHz 70 Hz VGA-文字 720 X 400 37.9 kHz 85 Hz VESA 800 X 600 37.9 kHz 60 Hz SVGA 800 X 600 46.9 kHz 75 Hz ESVGA 800 X 600 53.7 kHz 85 Hz VESA 832 X 624 49.7 kHz 75 Hz Macintosh 16”彩色 1024 X 768 65 kHz 60 Hz XGA 1024 X 768 48.4 kHz 60 Hz VESA 1024 X 768 56.5 kHz 70 Hz VESA 1024 X 768 60.0 kHz 75 Hz EUVGA 1024 X 768 60.2 kHz 75 Hz Macintosh 19”彩色 1024 X 768 68.7 kHz 85 Hz VESA 1152 X 864 67.5 kHz 75 Hz VESA 1152 X 870 68.7 kHz 75 Hz Macintosh 2Γ彩色 1280 X 960 60.0 kHz 60 Hz VESA 1280 X 960 85.9 kHz 85 Hz VESA 1280 X 1024 64.0 kHz 60 Hz VESA 1280 X 1024 80.0 kHz 75 Hz VESA 1280 X 1024 91.1 kHz 85 Hz VESA 1600 X 1200 75.0 kHz 60 Hz VESA - 1600 X 1200 81.3 kHz 65 Hz VESA 1600 X 1200 87.5 kHz 70 Hz VESA 1600 X 1200 93.8 kHz 75 Hz VESA 1600 X 1200 106. 3kHz 85 Hz VESA ----------1争*裝—— (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） J^4858 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明說明（3 ) 當代之顯示器允許以各種最流行之工業標準而操作。 在C R T裝置中，自動增益控制（A G C )電路係作爲對 於不同之解析度，提供適當之水平以及垂直掃瞄頻率。雖 然該A G C電路無法對於所有模式而完美的予以中心化， 但是整個顯示影像可根據水平以及垂直掃瞄頻率，並因爲 CRT具有變動之顯示區域而可顯示（當以圖素考量）。 爲了得到完美之中心化，使用者一般必須手動調整該螢幕 〇 然而對於L C D裝置，會面對不同之問題。因爲 L C D顯示器係爲固定解析度裝置，且其只接受固定水平 以及垂直頻率，因此該L C D顯示器無法對於各種工業標 準繪圖模式之不同水平以及垂直掃瞄頻率而調整。中心化 亦是一個問題，因爲L C D螢幕係爲一固定解析度顯示器 。假如該水平中心化做得不正確，在螢幕左側或右側之資 料將會遺失。假如該垂直中心化做得不正確，則螢幕之上 端或下端之資料亦將會遺失。對於具有習知類比監視器介 面之L C D顯示器之驅動時，會有以下之問題：輸入類比 資料需要在驅動該L C D顯示器之前，被轉換爲數位形式 。然而，該取樣時脈資訊部位出現在類比監視器介面中。 該L C D顯示器因而需要產生具有正確頻率以及相位之時 脈，以正確取樣該類比影像資料。 習知技藝之L C D顯示器對使用者提供手動之調整’ 其允許使用者經下押按鈕而將螢幕影像自左移動至右側以 及自上移動至下側，因此允許使用者手動的將L C D螢幕 (請先閱讀背面之注意事項再填寫本頁) « 丨裝Resolution (point X-ray) Horizontal frequency Vertical frequency Graphic mode 640 X 350 31.5 kHz 70 Hz MCGA 640 X 480 31.5 kHz 60 Hz VGA-G 640 X 480 37.5 kHz 75 Hz EVGA 640 X 480 43.3 kHz 85 Hz VESA 720 X 400 31.5 kHz 70 Hz VGA-Text 720 X 400 37.9 kHz 85 Hz VESA 800 X 600 37.9 kHz 60 Hz SVGA 800 X 600 46.9 kHz 75 Hz ESVGA 800 X 600 53.7 kHz 85 Hz VESA 832 X 624 49.7 kHz 75 Hz Macintosh 16 "color 1024 X 768 65 kHz 60 Hz XGA 1024 X 768 48.4 kHz 60 Hz VESA 1024 X 768 56.5 kHz 70 Hz VESA 1024 X 768 60.0 kHz 75 Hz EUVGA 1024 X 768 60.2 kHz 75 Hz Macintosh 19 "color 1024 X 768 68.7 kHz 85 Hz VESA 1152 X 864 67.5 kHz 75 Hz VESA 1152 X 870 68.7 kHz 75 Hz Macintosh 2Γ Color 1280 X 960 60.0 kHz 60 Hz VESA 1280 X 960 85.9 kHz 85 Hz VESA 1280 X 1024 64.0 kHz 60 Hz VESA 1280 X 1024 80.0 kHz 75 Hz VESA 1280 X 1024 91.1 kHz 85 Hz VESA 1600 X 1200 75.0 kHz 60 Hz VESA-1600 X 1200 81.3 kHz 65 Hz VESA 1600 X 1200 87.5 kHz 70 Hz VESA 1600 X 1200 93.8 kHz 75 Hz VESA 1600 X 1200 106. 3kHz 85 Hz VESA ---------- 1 contention * (Please read the precautions on the back before filling this page) This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) (%) J ^ 4858 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. Description of Inventions (3) Contemporary displays allow operation to the most popular industrial standards. In the C R T device, an automatic gain control (A G C) circuit is used to provide appropriate horizontal and vertical scanning frequencies for different resolutions. Although the A G C circuit cannot be perfectly centered for all modes, the entire display image can be displayed according to the horizontal and vertical scanning frequencies and because the CRT has a variable display area (when considering pixels). In order to obtain perfect centralization, users generally have to manually adjust the screen. However, for LCD devices, different problems will be faced. Because the LCD display is a fixed resolution device, and it only accepts fixed horizontal and vertical frequencies, the LCD display cannot be adjusted for different horizontal and vertical scanning frequencies of various industrial standard drawing modes. Centralization is also a problem because the LCD screen is a fixed-resolution display. If this horizontal centering is done incorrectly, data on the left or right side of the screen will be lost. If the vertical centering is not done correctly, the data at the top or bottom of the screen will also be lost. When driving an LCD monitor with a conventional analog monitor interface, there are the following problems: inputting analog data needs to be converted to digital form before driving the LCD monitor. However, the sampling clock information portion appears in the analog monitor interface. The LCD display therefore needs to generate a clock with the correct frequency and phase to correctly sample the analog image data. The LCD monitor of the known art provides manual adjustment to the user. It allows the user to move the screen image from the left to the right and from the top to the bottom by pressing the button, so the user is allowed to manually move the LCD screen (please Read the notes on the back before filling out this page) «丨
n -ϋ n H 一 口、t ϋ— ·ϋ ϋ ν^— n ϋ I 聲. 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -6 - 514858 A7 __ B7 五、發明說明（4 ) (請先閱讀背面之注意事項再填寫本頁) 之影像中心化。習知技藝L C D顯示器藉由以時脈爲基礎 之將時脈之輸入資料予以延遲，而執行圖素之調整。使用 者之設定可除存在系統之E E P R〇m中，但是當顯示器 之硬體板面被改變時，該設定則需要重新調整。此種習知 L C D顯示器只支援預設數目之顯示解析度。 一般而言，需要使用者手動的調整電腦係屬重要的缺 點，特別是當電腦變得越來越複雜微妙且，，使用者方便性，，正 大力推行時（包括複雜微妙之技術以允許面板插入至主機 板而不需使用者擔心匯流排對衝、中斷要求以及其他複雜 事項。 有一關於V E S A標準之方案，係需要先加入八個額 外之位元，以及之後在加入八個額外之位元，每個水平 s y n c (同步）脈衝（爲了界定此螢幕影像係如何被中 心化的）。但是，此需要在當今所有繪圖卡、軟體驅動程 式等之改變，而將產生相當的花費以及不便。 發明槪述 經濟部智慧財產局員工消費合作社印製 根據本發明，係關於一種新的方法以及結構以允許一 液晶裝置（L C D )顯示器使用於執行各種程式之電腦（ 該程式可提供各種繪圖模式之螢幕影像），以及可中心化 在L C D顯示器之螢幕影像而不需要操作者之調整。根據 本發明，由視頻驅動程式所提供之視頻信號視頻模式，係 自動被偵測而不需要視頻驅動程式之特別指令。顯示信號 之主動部份經決定，且適當之間距（offset)經提供以發送 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 514858 A7 經濟部智慧財產局員工消費合作社印製 ___Β7_ 一 五、發明說明（5 ) 一視頻信號至具有適當水平以及垂直頻率之L C D顯不器 ，而使螢幕影像在L C D顯示器上被中心化。該較佳之取 樣相位係藉由在不同取樣相位測量數次以及由哪一個取樣 相位具有最大對照値（表示可使用之最佳取樣相位）而自 動決定。 圖形的簡單敘述 圖1係一時序圖，展示介於水平同步信號以及R G B 資料信號之關係； 圖2係一時序圖，展示垂直同步信號以及水平同步信 號之間之關係； 圖3係一時序圖，指出根據本發明之水平同步信號、 R G B資料信號以及經解壓縮時脈信號之間的關係； 圖4係方塊圖，指出使用在本發明中之線鎖住P L L 之實施例； 圖5係一方塊圖，指出本發明之電腦系統； 圖6係一方塊圖，指出本發明之螢幕控制電路4 0 0 之一實施例； 圖7係一時序圖，指出關於水平同步脈衝之主動 R G B資料信號之位置； Η 8係一時序圖，指出關於垂直同步信號之主動 R G Β資料信號之決定； 圖1 9係流程圖，指出關於本發明之操作； 匱1 1 〇係一流程圖，指出關於本發明之另一操作； (請先閱讀背面之注意事項再填寫本頁) -裝 訂----卜IL·聲 本紙張尺度適用中_家標準（CNS)A4規格⑽χ挪公髮） 8 514858 A7 B7 _五、發明說明（6 ) 圖1 1係一時序圖，指出視頻信號之可能取樣點； 圖1 2係一圖，指出根據本發明之實施例之影像品質 以及取樣相位之間的關係； 圖1 3係一圖，指出介於本發明另一實施例之影像品 質以及取樣相位之間的關係。 主要元件對照表 4 〇 4 相位 鎖 住 回 路 4 〇 電 腦 系 統 4 1 電 腦 4 2 L C D 顯 示 器 4 〇 〇 螢 幕 控 制 電 路 4 3 儲 存 裝 置 (請先閱讀背面之注意事項再填寫本頁) 裝 經濟部智慧財產局員工消費合作社印製 較佳實施例之詳細描述 圖1係一時序圖，展示水平同步脈衝以及R G B影像 資料之間的關係。水平同步脈衝係指當螢幕影像之新線將 要開始，而R G B資料係指在螢幕影像之單一縣內之每個 圖素中之亮度資訊。該水平同步係出現在不同之線上而成 爲RGB資料。其界定當CRT電子束開始水平掃過（ sweep)。如圖1所示，自水平信號之主動端緣至有效資料 之圖素數目，對於特殊圖形模式係固定的，但是X値對於 不同圖形模式係不同。 圖2係一時序圖，展示水平同步脈衝以及垂直同步脈 丁 - n ·1 n B I n flu an n n I · 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公爱） 9 514858 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（7 ) 衝之間的關係。垂直同步脈衝係界定何時新的螢幕影像將 要開始’而因此’在每個垂直同步脈衝之後者係爲多數個 水平同步脈衝’每個係對應於螢幕影像之每個一線。相關 於每個水平同步脈衝係爲一對應r G B資料流（如上述參 考圖1所示）。 根據本發明之教導，第一步驟係以信號而解壓縮一時 脈，以驅動該顯示器。在本實施例，不使用一固定時脈或 一組對於各種最流行之工業標準有用之固定時脈，因爲水 平時脈係假設該影像信號可以爲〇 f f ’頻率，而導致介於 產生影像資料以及使用作爲驅動L C D顯示器之間的時脈 頻率的錯誤。因此，根據本發明之實施例，一線鎖住相位 鎖回路（P L L )可經使用以自該影像信號而將時脈予以 解壓縮。 圖3係一時序圖，更詳細的描述一水平同步信號、以 多數個執行在預設時脈頻率之脈衝形式的R G B資料，以 及得自由水平同步信號所驅動之線鎖住P L L所得到，並 鎖住於類比R G B資料之頻率之經壓縮之時脈脈衝。 圖4所示，係P L L 4 0 4使用該水平同步信號作爲 輸入參考，並藉由以圖形模式所決定之固定値而分開該輸 出信號F。^。。k。此係該P L L 4 0 4如何提供F。^。。k 於R G B資料速率。 圖5係一方塊圖，指出根據本發明之教導所建構出之 電腦系統。如圖5所示，電腦於R G B資料速率。 圖5係一方塊圖，指出根據本發明之教導所建構出之 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -1 〇 - -------^---^--------^-----^----^ (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 514858 A7 — ________ B7 五、發明說明（8 ) 電腦系統。如圖5所示，電腦系統4 0包括電腦4 1，其 提供任何習知格式之視頻信號於其輸出匯流排中。在習知 技藝之系統中’電腦4 1可直接驅動一視頻顯示器。或者 ，在習知系統中，電腦將需要輸出一標準視頻模式，以直 接驅動一 L C D顯示器。然而，根據本發明之教導，一新 奇之螢幕控制電路4 0 0，自電腦4 1接收該視頻信號， 並依序提供適當之信號以控制L C D顯示器4 2。使用在 關於螢幕控制電路4 0 0者，係爲儲存裝置4 3，以再藉. 由螢幕控制電路4 0 0處理之後，並於儲存於儲存裝置之 視頻資料，於螢幕控制電路4 0 0之控制下而被送至 L C D顯不器4 2之前，而儲存視頻顯不資料之一個或多 個線，或框，爲每個圖素爲8個位元R，G，以及B位元 。螢幕控制電路4 0 0控。螢幕控制電路4 0 0控制自儲 存裝置4 3至L CD顯示器4 2之數位RGB資料之輸出 ，並提供水平以及垂直同步信號H s y n。，以及V s y „。，以控 制L C D顯示器4 2。 在一實施例中，儲存裝置4 3係包含在與螢幕控制電 路4 0 0相同之電路中。在一實施例中，儲存裝置4 3係 允許儲存圖素資料之兩個線，一個中，儲存裝置4 3係包 含在與螢幕控制電路4 0 0相同之電路中。在一實施例中 ，儲存裝置4 3係允許儲存圖素資料之兩個線，一個係藉 由螢幕控制電路4 0 0而寫入，而另一個經事先儲存而自 儲存裝置4 3而讀出，而將圖素電路4 0 0而寫入，而另 一'個經事先儲存而自儲存裝置4 3而3買出’而將圖素資料 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -11 - -------r---- Aw I ^--------^----卜----- (請先閱讀背面之注意事項再填寫本頁) 514858 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明說明（9 ) 之線送至LCD顯示器42 (以兵兵之方式）。 在另一實施例中，儲存裝置4 3包含足夠之記憶體以 允g午兩個整個的視頻框被儲存（仍以兵兵之方式），一個 框係藉由螢幕控制電路4 0 0而寫入至儲存裝置4 3，而 另一事先經儲存之視頻框係自儲存裝置4 3被讀出而提供 視頻資訊至L C D顯示器4 2。在此實施例中，其兩個框 係以乒乓之方式而儲存於儲存裝置4 3之中，不同之垂直 頻率可藉由以電腦4 1發送垂直頻率，而以L C D顯示器 4 2發送垂直頻率之方式而達成。 圖6係一方塊圖，指出世合於使用圖5之螢幕控制電 路4 0 0之結構的一實施例。在本發明之一實施例中，上 述關於視頻模式之決定以及螢幕影像中心化操作之執行之 過頭（overhead)操作，係在當啓動（boot-up)時，以及當像是 由V s y η。且/或H s y η。變化時之視頻模式改變時而執行 〇 螢幕控制電路4 0 0在線4 0 1中接收水平同步信號 H s y η。，而在線4 0 2中接收垂直同步信號V s y η。’而 在三線匯流排4 0 3中接收以R G Β格式（傳統上的）之 類比影像資訊（係爲水平同步、垂直同步、以及類比 RGB信號）。如圖6所示，可是用於該接收在401中 之水平同步信號。 線鎖住P L L 4 0 4以及時脈C L K係自水平同步信 號而解壓縮。此時脈信號將具有以下之頻率： n n 1_1 n n I n —1 IV (請先閱讀背面之注意事項再填寫本頁) -丨裝n -ϋ n H sip, t ϋ— · ϋ ϋ ν ^ — n ϋ I sound. This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) -6-514858 A7 __ B7 V. Invention Note (4) (Please read the notes on the back before filling out this page) for image centering. The conventional art LCD monitor performs clock adjustment by delaying clock input data based on the clock. The user's setting can be saved in the E E P ROM of the system, but when the hardware surface of the display is changed, the setting needs to be adjusted again. This conventional LCD display only supports a preset number of display resolutions. Generally speaking, users need to manually adjust the computer system, which is an important disadvantage, especially when the computer becomes more and more complicated and delicate, and user convenience is being vigorously promoted (including complex and delicate technology to allow panels Plug into the motherboard without the user having to worry about bus hedging, interruption requirements, and other complex issues. There is a solution to the VESA standard that requires eight additional bits to be added first, and eight additional bits to be added later, Each horizontal sync (synchronization) pulse (in order to define how the screen image is centralized). However, this requires changes in all graphics cards, software drivers, etc. today, which will cause considerable cost and inconvenience. Invention 槪According to the present invention, printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economics is about a new method and structure to allow a liquid crystal device (LCD) display to be used on a computer running various programs (the program can provide screen images of various drawing modes) ), And the screen image can be centered on the LCD display without the operator According to the present invention, the video mode of the video signal provided by the video driver is automatically detected without the need for a special instruction from the video driver. The active part of the display signal is determined and an appropriate offset is set Provided to send this paper to the size of the Chinese National Standard (CNS) A4 (210 X 297 mm) 514858 A7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs ___ Β7_ Description of the invention (5) A video signal to LCD monitors with appropriate horizontal and vertical frequencies allow the screen image to be centered on the LCD display. The preferred sampling phase is obtained by measuring several times at different sampling phases and by which sampling phase has the largest contrast. The optimal sampling phase that can be used) is automatically determined. The brief description of the graph Figure 1 is a timing diagram showing the relationship between the horizontal synchronization signal and the RGB data signal; Figure 2 is a timing diagram showing the vertical synchronization signal and the horizontal synchronization The relationship between the signals; FIG. 3 is a timing diagram showing the horizontal synchronization signal, R according to the present invention. The relationship between the GB data signal and the decompressed clock signal; Figure 4 is a block diagram showing an embodiment of the PLL locked by a wire used in the present invention; Figure 5 is a block diagram showing the computer system of the present invention; Fig. 6 is a block diagram showing an embodiment of the screen control circuit 400 of the present invention; Fig. 7 is a timing diagram showing the position of the active RGB data signal regarding the horizontal sync pulse; 系 8 is a timing diagram showing Decision on the active RG Β data signal of the vertical synchronization signal; Figure 19 is a flowchart indicating the operation of the present invention; Figure 110 is a flowchart indicating another operation of the present invention; (Please read the back first Please pay attention to this page and fill in this page again)-Binding ---- Built · The paper size is applicable _ Home Standard (CNS) A4 Specification ⑽χ Norwegian Gongfa) 8 514858 A7 B7 _V. Description of the Invention (6) Figure 1 1 is a timing diagram indicating possible sampling points of the video signal; FIG. 12 is a diagram indicating the relationship between the image quality and the sampling phase according to the embodiment of the present invention; FIG. Invention of another embodiment Relationship between the image-quality and the sampling phase. Comparison table of main components 4 〇4 Phase locked loop 4 〇 Computer system 4 1 Computer 4 2 LCD display 4 〇 Screen control circuit 4 3 Storage device (Please read the precautions on the back before filling this page) Install the intellectual property of the Ministry of Economic Affairs Detailed description of the preferred embodiment printed by the Bureau's Consumer Cooperative Figure 1 is a timing diagram showing the relationship between the horizontal sync pulse and RGB image data. The horizontal sync pulse refers to when the new line of the screen image is about to start, and the R G B data refers to the brightness information in each pixel in a single county of the screen image. The horizontal synchronization appears on different lines and becomes RGB data. It defines when the CRT electron beam begins to sweep horizontally. As shown in Figure 1, the number of pixels from the active edge of the horizontal signal to the valid data is fixed for the special graphics mode, but X 値 is different for different graphics modes. Figure 2 is a timing diagram showing horizontal synchronization pulses and vertical synchronization pulses-n · 1 n BI n flu an nn I · This paper size applies to China National Standard (CNS) A4 (210 X 297 public love) 9 514858 Economy Printed by A7 B7 of the Consumer Cooperatives of the Ministry of Intellectual Property Bureau V. Invention Description (7) The relationship between the impact. The vertical sync pulses define when a new screen image is about to start 'and therefore' there are multiple horizontal sync pulses after each vertical sync pulse ', each corresponding to each line of the screen image. For each horizontal sync pulse, there is a corresponding r G B data stream (as shown in the above reference to Figure 1). According to the teachings of the present invention, the first step is to decompress a clock with a signal to drive the display. In this embodiment, a fixed clock or a set of fixed clocks that are useful for various most popular industrial standards is not used, because the horizontal clock system assumes that the image signal can be 0ff 'frequency, resulting in the generation of image data And the error in using the clock frequency between driving LCD displays. Therefore, according to an embodiment of the present invention, a one-line locked phase-locked loop (PLL) can be used to decompress the clock from the image signal. FIG. 3 is a timing diagram, describing in more detail a horizontal synchronization signal, RGB data in the form of a plurality of pulses executed at a preset clock frequency, and obtained by locking a PLL with a line driven by a free horizontal synchronization signal, and Compressed clock pulses locked to the frequency of analog RGB data. As shown in Fig. 4, the system P L L 4 0 4 uses the horizontal synchronization signal as an input reference, and separates the output signal F by a fixed chirp determined in a graphic mode. ^. . k. This is how P L L 4 0 4 provides F. ^. . k is the R G B data rate. Figure 5 is a block diagram illustrating a computer system constructed in accordance with the teachings of the present invention. As shown in Figure 5, the computer is at the R G B data rate. Figure 5 is a block diagram indicating that the paper size constructed according to the teachings of the present invention is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -1 〇- ------- ^- -^ -------- ^ ----- ^ ---- ^ (Please read the notes on the back before filling out this page) Printed by the Employee Consumption Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 514858 A7 — ________ B7 5. Description of the invention (8) Computer system. As shown in FIG. 5, the computer system 40 includes a computer 41 which provides a video signal of any conventional format in its output bus. In the conventional art system, the computer 41 can directly drive a video display. Or, in the conventional system, the computer will need to output a standard video mode to directly drive an LCD monitor. However, according to the teachings of the present invention, a novel screen control circuit 400 receives the video signal from the computer 41 and sequentially supplies appropriate signals to control the LCD display 42. Used in the screen control circuit 4 0 0, is the storage device 4 3, to borrow again. After processed by the screen control circuit 4 0 0, and the video data stored in the storage device, used in the screen control circuit 4 0 0 Under control, it is sent to the LCD monitor 4 2 and one or more lines, or frames, for storing video display data are 8 bits R, G, and B for each pixel. The screen control circuit is controlled by 400. The screen control circuit 4 0 0 controls the output of the digital RGB data from the storage device 4 3 to the L CD display 4 2 and provides horizontal and vertical synchronization signals H s y n. , And V sy... To control the LCD display 42. In one embodiment, the storage device 43 is included in the same circuit as the screen control circuit 400. In one embodiment, the storage device 43 is Two lines are allowed to store pixel data. In one, the storage device 43 is included in the same circuit as the screen control circuit 400. In one embodiment, the storage device 43 is allowed to store two of the pixel data. One line is written by the screen control circuit 400, and the other is read out from the storage device 43 by storing in advance, and the pixel circuit 400 is written, and the other ' I bought it from the storage device 4 3 and 3 after storing it in advance, and the paper size of this paper is applicable to China National Standard (CNS) A4 specification (210 X 297 mm) -11-------- r- --- Aw I ^ -------- ^ ---- Bu ----- (Please read the precautions on the back before filling out this page) 514858 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. The line of the invention description (9) is sent to the LCD display 42 (in the manner of soldiers). In another embodiment, the storage device 43 contains enough notes The body is allowed to store two entire video frames (still in the manner of soldiers), one frame is written to the storage device 4 3 by the screen control circuit 4 0 0, and the other video is stored in advance The frames are read out from the storage device 4 3 to provide video information to the LCD display 42. In this embodiment, two frames thereof are stored in the storage device 4 3 in a ping-pong manner, and different vertical frequencies may be used. This is achieved by sending the vertical frequency from the computer 41 and the vertical frequency from the LCD display 42. Figure 6 is a block diagram showing an implementation of the structure of Shihe using the screen control circuit 4 0 0 of Figure 5 For example, in one embodiment of the present invention, the above-mentioned decision about the video mode and the execution of the screen image centering operation are performed at the time of boot-up, and when the image is controlled by V sy η. and / or H sy η. When the video mode is changed, the screen control circuit 4 0 0 receives the horizontal synchronization signal H sy η in line 4 0 1 and receives the vertical synchronization signal V in line 4 2 sy η. 'And converge on the third line In row 4 0 3, analog image information (horizontal synchronization, vertical synchronization, and analog RGB signals) is received in the RG B format (traditional). As shown in FIG. 6, it is used for the level of 401 in the reception. Sync signal. The line locks PLL 4 0 4 and the clock CLK is decompressed from the horizontal synchronization signal. At this time, the pulse signal will have the following frequency: nn 1_1 nn I n — 1 IV (Please read the precautions on the back before (Fill in this page)-丨
1 n an n )g· n n n n n n I I 本紙張尺度適用中國國家標準（CNS)A4規格（210 x 297公釐） 12- 514858 Α7 Β7 五、發明說明（ι〇 ) F C 1 0 c k =(在水平方向上之圖素數目）/ Hsync: 週期（以秒算） (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 在導線4 0 1所接收之水平同步信號H S y n ^亦可適用 於水平週期計數器4 0 5。水平週期計數器4 0 5決定介 於連續水平同步信號之間的時間週期，如此決定相關於螢 幕影像模式之水平頻率（參考表格1 )。相同的，接收在 導線4 0 2中之垂直同步信號V s y n。係施加於決定連續 V $ y η。信號之間的週期的垂直週期計數器4 0 6，如此而 建立螢幕影像之垂直頻率。（參考表格信號之間的週期的 垂直週期計數器4 0 6，如此而建立螢幕影像之垂直頻率 。（參考表格1 )。參考圖9之流程圖，該節點資訊在步 驟9 1以及9 2中得到，其係爲將來自於水平週期計數器 4 0 5以及垂直週期計數器4 0 6之輸出信號予以施加至 根據所偵測圖形模式而建立固定參數之4 0 7之進來（ incoming)顯示模式偵測電路。因此，藉此，當水平週期1 )。參考圖9之流程圖，該節點資訊在步驟9 1以及9 2 中得到，其係爲將來自於水平週期計數器4 0 5以及垂直 週期計數器4 〇 6之輸出信號予以施加至根據所偵測圖形 模式而建立固定參數之4 0 7之進來（incoming )顯示模式 偵測電路。因此，藉此，當水平週期計數器4 0 5偵測等 於37 · 9 kHz之等效水平同步信號頻率之週期’而垂 直週期計數器4 0 6偵測一 6 0 Η z之等效垂直同步信號 週期之週期時，進來顯示模式偵測電路4 0 7決定被送至 -13- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 經濟部智慧財產局員工消費合作社印製 514858 A7 __B7__ 五、發明說明（) L C D顯示器之影像之圖形模式係爲S V G A，而因此， 該顯示器影像係爲8 0 〇 X 6 0 0圖素。在一實施例中， 進來顯示器模式偵測電路4 0 7提供爲輸出資料水平計數 資訊，其相關於儲存於水平計數暫存器，而相關於垂直頻 率之垂直計數資訊係儲存於垂直計數暫存器。 在一實施例中，進來之顯示模式偵測電路4 0 7 —般 係習知的以上視表格而實施。在另一實施例中，電路 4 0 7係以軟體、硬體或結合兩者而實施，對於熟知此技 藝者在本發明之教導下而瞭解。 該類比R G B信號係施加於匯流排4 0 3而至類比至 數位轉換器408 — R，408 — G以及408 - B。此 些類比至數位轉換器之該數位輸出（在一實施例中係爲每 個爲八位元）係儲存在儲存單元4 3 (圖5 )以稍後應用 於LCD顯示器4 2 (圖5)。該類比至數位轉換器 408 — R、408 — G以及408 - B之數位輸出，亦 施加於水平以及垂直作用/不作用偵測電路4 0 9，其決 定相關於水平同步信號之作用R G B資料信號之位置，如 圖9之步驟9 3所示。此係藉由計算從水平同步脈衝之開 始至R G B信號之作動資料部份之起始的經壓縮時脈 C L K循環週期之數目，而得到Η。。u n t i，而自該水平 脈衝信號之開始自R G B資料信號之作動部份之結束處之 時脈週期的數目係爲Η。^ u n t 2 (如圖7所示）。此產生 標示至作動R G B資料部份之開始之時脈週期之數目的第 一計數H e。u n t 1，以及標示至R G B資料信號之作動部 ^紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） _ (請先閱讀背面之注意事項再填寫本頁) *裝---- 訂----卜—丨卜等 514858 A7 B7 五、發明說明（12) 份之結束之時脈週期的數目之第二計數Η。。u n t 2。此精 確界定水平線之作動資料部份（如反映在水平/垂直作動 /非作動偵測電路4 0 9之輸出信號），而因此將資料之 位置儲存於儲存單元43 (圖5)。 介於此二水平計數之間的差異係等於水平作動資料圖 素之數目。在上述給定之例子中，對於S V G A模式，此 數目應等於8 0 0。假如介於此二計數之間的差異不等於 8 0 0，此意指該經解壓縮之時脈並未正確的對應至所接 收之使用作爲產生視頻信號之時脈。在此時，線鎖住 P L L 4 0 4是需要而調整，使得介於第一欲以第二計數 之間的差異等於所偵測圖形模式之預期水平解析度。此線 鎖住P L L之內部計數器經增加/減少以調整取樣時脈頻 率’使得例如該計數器被設定爲8 0 0。 以相同的方式，水平以及垂直作動/非作動偵測電路 4 0 9 ’係藉由計數自垂直同步脈衝之開始至R G B信號 之作動資料部份之開始之間的H s y n。脈衝之數目而得到 V。。u n t，而至R G B資料信號之作動部份之結束處之線 數目（H s y n。脈衝）之線數目係爲v。^ , n t 2，如圖8所 示。此導致第一計數V。。u n t 1標示至作動r G B資料部 份之開始的掃猫線數目，而第二計數V。。u n t 2係標示至 R G B資料信號之作動部份之結束處之掃瞄線的數目。此 精確界定在垂直方向螢幕之作動資料部份，而反映再來自 於水平以及垂直作動/非作動偵測電路4 〇 9之輸出信號 中〇 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -15 - (請先閱讀背面之注意事項再填寫本頁) .•裝--------訂----r!卜 經濟部智慧財產局員工消費合作社印製 514858 A7 B7____ 五、發明說明（13 ) (請先閱讀背面之注意事項再填寫本頁) 水平以及垂直作動/非作動偵測電路4 0 9儲存水平 作動位置Η。。u n t 1、水平非作動位置Η。。U Π t 2、垂直作 動位置V。^ u u t i、以及垂直非作動位置V。。u n t 2資料於 韌體之暫存器中以處理。 此兩垂直計數之差異係等於垂直作動線之數目。在上 述給定之例子中，對於s V G A模式，此數目應等於 6〇0。假如介於此二計數之間的差異不等於6 0 0 ’貝iJ 現行繪圖模式係爲一標準繪圖模式。操作之一非標準模式 係爲得自標準模式表格之模式（而做爲表格1之例子）。 例如，該標準1024x768 6 0 Hz XGA模式 經濟部智慧財產局員工消費合作社印製 ，具有6 5Mh z之圖素（水平）速率。在非標準模式中 ，該頻率可以設定爲像是65 · 5Hhz。在該65 · 5 Mh z例子中，每一作動顯示寬度之圖素數目在使用標準 X G A模式設定時將不等於1 0 2 4。在一實施例中’當 該韌體調整線鎖住P L L 4 0 4之週期使得每個作動顯示 寬度之圖素數目等於1 0 2 4。假如在預設範圍中之調整 線鎖住P L L 4 0 4位產生每個顯示寬度之正確圖素數目 時（在此時爲1 0 2 4 )，則該韌體將設定預設爲標準 X G A設定，否則使用新的P L L時脈週期。 藉由連續監視接收自類比至數位轉換器4 0 8 - R ’ 4 0 8 - G以及4 0 8 — B之進來的RGB資料，水平以 及垂直作動/非作動偵測電路4 0 9可對於多數個水平線 而在水平同步脈衝之開始至R G B資料之後，而決定出最 小之計數器値，以決定信號之R G B作動資料部份之開始 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）~ - 16 - 514858 A7 B7 五、發明說明（14) (請先閱讀背面之注意事項再填寫本頁) ，以及決定出有效R G B資料之最大計數器値，以決定 R G B信號之作動資料部份之結束。藉由以此方式而監視 多數個水平線（例如在一框中之所有線），可確保在線上 之最左圖素者爲有效資料，而一有效線係爲在其最右圖素 之有效資料，藉此有效決定出作動R G B資料部份之全寬 度。以類似之方式，藉由監視多數個之一個或更多之螢幕 影像，可確定（或至少非常像的）而接收一第一線於具有 至少一作動圖素之影像中，以及一最後線於具有至少一作 動圖素之影像中，藉此而決定垂直作動部份之全部延伸。 如圖9之步驟9 6以及9 7所示，藉由決定出螢幕影 像之水平以及垂直延伸之作動以及非作動部份，該螢幕影 像可以被自動中心化。此係藉由發送有效螢幕影像至顯示 控制器，而適當導引每個框之空白列，並適當導引每個列 之空白圖素。 經濟部智慧財產局員工消費合作社印製 假設如上述，線鎖住P L L 4 0 4係使用作爲解壓縮 來自於具有等於由繪圖卡（未顯示）所使用之時脈的頻率 的水平同步信號的時脈，以發送螢幕影像資訊，時脈信號 C L K可以是相同之頻率，但是爲該繪圖卡所使用之時脈 相位之外。假如一直在相位狀況之外，該R G B資料將無 法由類比至數位轉換器4 0 8 — R，4 0 8 — G以及 4 0 8 - B而適當取樣，而倒是不適當之螢幕影像。於是 ，在本發明之特徵下，線鎖住P L L 4 0 4係具有將其輸 出時脈信號C L K予以相位調整之能力。在一實施例中， 使用作爲自動調整線鎖住P L L時脈信號C L K之相位的 -17- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 經濟部智慧財產局員工消費合作社印製 514858 A7 —— ___ B7____ 五、發明說明（15 ) 方法係展示在圖1 0中。第一步驟係選擇在具有強度之最 高改變之顯示影像之線（如圖1 0流程圖之步驟1 0 1所 示）。此係作爲避免於處理時使用空白線或實心白線（而 將產生非常差的結果）。在一實施例中，爲了決定哪個線 具有強度之最大改變，將比較相鄰圖素，並將總和作成表 。因此，對於框之每個線，將計算以下之値： ^Intensity = ~ PL I2 i=l丨 丨 其中η=在一線上之圖素數目， P i =圖素強度 此對於習知技藝而言在提供一按鈕於L C D顯示器上 以藉由使用者手動操控以調整取樣時脈C L K之相位至使 用者認爲圖素看起來不錯之點，係使具有顯著的優點。 決定哪一個線具有強度之最大改變，係對於多數個框 或框之每個線上而同步執行，或者係在每個框之單一線而 依序執行直到整個框（或其想要的部份）具有其所偵測之 線強度變動。假如要的話，藉由電腦4 1所執行之視頻驅 動器（圖5 )可提供一特定影像至螢幕中，雖然已知此一 般並不需要，因爲不需要，因爲當電腦開機時，一影像送 至該螢幕，並保持該影像一相當的時間週期，以允許操作 。進一步，最好此時間中之螢幕影像未被發送，因爲圖5 之L CD顯示器4 2並未被自螢幕控制電路4 0 0而發送 信號，以允許L C D顯示器4 2於此時間中而變爲作動’ 本紙張尺度適用中國國家標準（CNS>A4規格（210 X 297公釐） -18· ------V----I --丨丨丨丨丨丨訂----- ---r I (請先閱讀背面之注意事項再填寫本頁) 514858 A7 B7 五、發明說明（16) 雖然電腦4 1係提供視頻信號誌螢幕控制電路4 0 0。在 此實施例中，只在螢幕控制電路4 0 0之作動之後，螢幕 控制電路4 0 0才提供作動視頻信號誌L C D顯示器4 2 〇 圖1 1指出R G B信號之一般放大部份，其展示對應 於數個接續圖素之類比信號。因爲此係爲類比信號，取樣 之點係相當重要。例如，可能之取樣點S i以及S 2將產生 不正確的資料，而取樣點S 3將產生正確的資料，因此提供 最大之螢幕影像對照。一旦一線被選擇爲具有最大對照便 亦時，該線將被取樣數次，每次具有不同之相位，以藉由 類比至數位轉換器408 - R，408 — B，408 — G 之類比R G B資料。對於該線之△強度係儲存於取樣相位 之每個變異，其結果係如圖1 2所示。該最大△強度係使 用作爲選擇取樣之最佳相位，而其係爲線鎖住P L L 4 0 4所調整之相位，以提供時脈信號C L K，而具有取 樣之最佳相位。 在另一實施例中，取樣相位偵測係藉由比較在不同框 之取樣圖素之強度而執行。藉由使用圖5之儲存裝置或在 圖5之螢幕控制電路4 0 0內之內部儲存，而儲存該先前 之框圖素強度，並與現有框圖素強度。假如該取樣相位係 爲正確’該強度差異（△強度）係爲最小値。類似於先前 之相位偵測方法，一旦一線被選擇爲具有最大強度便亦時 ’該線將被取樣數冊，而每次係以不同之相位而取樣 R G B資料。對於每個取樣相位，對於所選擇線之框之間 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -19 - (請先閲讀背面之注意事項再填寫本頁) -裝 f!4 經濟部智慧財產局員工消費合作社印製 514858 Α7 Β7 五、發明說明（17) 的圖素強度之差異和，係爲：1 n an n) g · nnnnnn II This paper size applies to Chinese National Standard (CNS) A4 (210 x 297 mm) 12- 514858 Α7 Β7 V. Description of the invention (ι〇) FC 1 0 ck = (in the horizontal direction Number of pixels on top) / Hsync: Period (in seconds) (Please read the notes on the back before filling out this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs on the horizontal synchronization signal HS received on the wire 4 0 1 yn ^ is also applicable to the horizontal period counter 405. The horizontal period counter 4 0 5 determines the time period between successive horizontal synchronization signals, and thus determines the horizontal frequency related to the screen image mode (refer to Table 1). Similarly, the vertical synchronizing signal V s n in the wire 4 02 is received. Is applied to determine the continuous V $ y η. The vertical period counter 4 0 6 of the period between the signals, so as to establish the vertical frequency of the screen image. (Refer to the vertical period counter 4 0 6 of the period between the signals in the table, so as to establish the vertical frequency of the screen image. (Refer to Table 1). With reference to the flowchart in FIG. 9, the node information is obtained in steps 9 1 and 9 2 , Which is to apply the output signals from the horizontal period counter 405 and the vertical period counter 406 to the incoming display mode detection circuit which establishes a fixed parameter 4 0 7 according to the detected graphics mode. So therefore, when the horizontal period is 1). Referring to the flowchart of FIG. 9, the node information is obtained in steps 9 1 and 9 2, which is to apply the output signals from the horizontal period counter 405 and the vertical period counter 406 to the detected pattern. Incoming display mode detection circuit that establishes a fixed parameter of 4 0 7 incoming. Therefore, by this, when the horizontal period counter 4 0 5 detects a period equal to an equivalent horizontal synchronization signal frequency of 37 · 9 kHz and the vertical period counter 4 0 6 detects an equivalent vertical synchronization signal period of 6 0 Η z During the cycle, the display mode detection circuit 4 0 7 was decided to be sent to -13- This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 514858 A7 __B7__ 5. Description of the invention () The graphic mode of the image of the LCD display is SVGA, and therefore, the image of the display is 800 × 600 pixels. In one embodiment, the incoming display mode detection circuit 407 provides horizontal count information as output data, which is related to being stored in the horizontal count register, and vertical count information related to the vertical frequency is stored in the vertical count register. Device. In one embodiment, the incoming display mode detection circuit 4 0 7 is generally implemented by the above-mentioned table. In another embodiment, the circuit 407 is implemented in software, hardware, or a combination of both, and is understood by those skilled in the art under the teachings of the present invention. The analog R G B signal is applied to the bus 403 to the analog to digital converters 408 — R, 408 — G, and 408 — B. The digital outputs of these analog-to-digital converters (eight bits each in one embodiment) are stored in the storage unit 4 3 (Fig. 5) for later application to the LCD display 4 2 (Fig. 5) . The digital outputs of this analog-to-digital converter 408 — R, 408 — G, and 408-B are also applied to the horizontal and vertical active / non-active detection circuits 409, which determine the role of the RGB data signal related to the horizontal synchronization signal. The position is shown in step 9 3 of FIG. 9. This is obtained by counting the number of compressed clock C L K cycle periods from the start of the horizontal sync pulse to the start of the action data portion of the R G B signal. . u n t i, and the number of clock cycles from the beginning of the horizontal pulse signal to the end of the active part of the R G B data signal is Η. ^ u n t 2 (as shown in Figure 7). This produces the first count He which marks the number of clock cycles to the beginning of the actuation R G B data portion. unt 1, and the moving part marked to the RGB data signal ^ The paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) _ (Please read the precautions on the back before filling this page) * Installation --- -Order ---- Bu- 丨 Bu, etc. 514858 A7 B7 5. The second count of the number of clock cycles at the end of the description of the invention (12). . u n t 2. This precisely defines the action data part of the horizontal line (such as reflected in the output signal of the horizontal / vertical action / non-action detection circuit 409), and therefore the position of the data is stored in the storage unit 43 (Figure 5). The difference between these two horizontal counts is equal to the number of horizontally actuated data pixels. In the example given above, for S V G A mode, this number should be equal to 8 0 0. If the difference between these two counts is not equal to 800, this means that the decompressed clock does not correspond correctly to the received clock used to generate the video signal. At this time, the line lock P L L 4 0 4 is adjusted as needed so that the difference between the first count and the second count is equal to the expected horizontal resolution of the detected graphics mode. This line locks the internal counter of PL L to increase / decrease to adjust the sampling clock frequency 'so that the counter is set to 80, for example. In the same way, the horizontal and vertical motion / non-motion detection circuits 4 0 9 ′ are counted by H s n from the start of the vertical sync pulse to the start of the action data portion of the R G B signal. The number of pulses gives V. . u n t, and the number of lines (H s y n. pulse) to the end of the active part of the R G B data signal is v. ^, n t 2, as shown in FIG. 8. This results in a first count V. . u n t 1 indicates the number of sweep lines to the beginning of the data portion of actuation r G B, and the second counts V. . u n t 2 is the number of scanning lines marked to the end of the active part of the R G B data signal. This is precisely defined in the action data part of the screen in the vertical direction, and it is reflected in the output signals from the horizontal and vertical motion / non-motion detection circuits 4 〇 This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -15-(Please read the precautions on the back before filling out this page). • Equipment -------- Order ---- r! 514858 A7 B7____ 5. Description of the invention (13) (Please read the precautions on the back before filling this page) Horizontal and vertical motion / non-motion detection circuit 4 0 9 Stores the horizontal motion position Η. . u n t 1. Horizontal inactive position Η. . U Π t 2. Vertical operating position V. ^ u u t i and the vertical inactive position V. . u n t 2 data is processed in the firmware's register. The difference between the two vertical counts is equal to the number of vertical actuation lines. In the example given above, this number should be equal to 600 for the sV G A mode. If the difference between the two counts is not equal to 6 0 0 ′, the current drawing mode is a standard drawing mode. One non-standard mode of operation is a mode derived from the standard mode table (as an example of Table 1). For example, the standard 1024x768 60 Hz XGA mode is printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs and has a pixel (horizontal) rate of 65 MHz. In non-standard mode, this frequency can be set to 65 · 5Hhz. In the 65 · 5 Mh z example, the number of pixels for each display width will not be equal to 1 0 2 4 when using the standard X G A mode setting. In one embodiment, when the firmware adjustment line locks the cycle of PL L 4 0 4 so that the number of pixels of each actuated display width is equal to 10 2 4. If the adjustment line in the preset range locks the PLL 4 0 4 bits to generate the correct number of pixels for each display width (1 0 2 4 at this time), the firmware will default to the standard XGA setting. , Otherwise use the new PLL clock period. By continuously monitoring the RGB data received from the analog to digital converters 4 0 8-R '4 0 8-G and 4 0 8 — B, horizontal and vertical motion / non-motion detection circuits 4 0 9 can be used for most After the start of the horizontal synchronization pulse to the RGB data, the minimum counter is determined to determine the start of the RGB action data part of the signal. This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm ~-16-514858 A7 B7 V. Description of the invention (14) (Please read the precautions on the back before filling out this page), and determine the maximum counter for valid RGB data 値 to determine the action data part of the RGB signal The end. By monitoring multiple horizontal lines (such as all lines in a box) in this way, it is ensured that the leftmost pixel on the line is valid data, and an effective line is valid data on its rightmost pixel. To effectively determine the full width of the active RGB data portion. In a similar manner, by monitoring one or more screen images, it is possible to determine (or at least very similar) to receive a first line in an image with at least one moving pixel, and a last line in In an image with at least one moving pixel, the full extension of the vertical moving part is determined by this. As shown in steps 9 6 and 9 7 of FIG. 9, by determining the moving and non-moving parts of the horizontal and vertical extensions of the screen image, the screen image can be automatically centered. This is to properly guide the blank rows of each frame and properly guide the blank pixels of each row by sending a valid screen image to the display controller. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs Assume that the line lock PLL 4 0 4 is used as a decompression time from a horizontal synchronization signal with a frequency equal to the clock used by a graphics card (not shown) Clock to send screen image information, the clock signal CLK can be the same frequency, but it is outside the clock phase used by the graphics card. If it is always out of phase, the R G B data will not be properly sampled from the analog to digital converters 4 0 — R, 4 0 — G, and 4 8 — B, but it will be an inappropriate screen image. Therefore, under the features of the present invention, the line lock P L L 4 0 4 has the ability to phase-adjust its output clock signal C L K. In one embodiment, -17- is used as an automatic adjustment line to lock the phase of the PLL clock signal CLK. This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm). Consumption by employees of the Intellectual Property Bureau Printed by the cooperative 514858 A7 —— ___ B7____ V. Description of the invention (15) The method is shown in Figure 10. The first step is to select the line that displays the image with the highest change in intensity (as shown in step 101 of the flowchart of Fig. 10). This is done to avoid using blank or solid white lines when processing (and will produce very poor results). In one embodiment, in order to determine which line has the greatest change in intensity, adjacent pixels are compared and the sum is tabulated. Therefore, for each line of the box, the following 値 will be calculated: ^ Intensity = ~ PL I2 i = l 丨 丨 where η = number of pixels on a line, P i = pixel intensity. Providing a button on the LCD display to manually adjust the phase of the sampling clock CLK by the user to a point where the user thinks that the pixels look good has a significant advantage. Deciding which line has the largest change in intensity is performed synchronously for a number of boxes or each line of a box, or sequentially on a single line of each box up to the entire box (or a desired part of it) Has its detected line intensity changes. If required, the video driver (Figure 5) executed by the computer 41 can provide a specific image to the screen, although it is known that this is generally not needed because it is not needed because when the computer is turned on, an image is sent to the The screen and hold the image for a considerable period of time to allow operation. Further, it is better that the screen image during this time is not sent, because the L CD display 4 2 in FIG. 5 is not sent from the screen control circuit 4 0 0 to allow the LCD display 4 2 to change during this time. Acting 'This paper size applies to Chinese national standard (CNS > A4 specification (210 X 297 mm) -18 · ------ V ---- I-丨 丨 丨 丨 丨 丨 Order ----- --- r I (Please read the notes on the back before filling out this page) 514858 A7 B7 V. Description of the invention (16) Although the computer 4 1 provides video signal screen control circuit 4 0 0. In this embodiment, Only after the screen control circuit 400 is actuated, the screen control circuit 400 provides an active video signal to the LCD display 4 2 〇 Figure 1 1 shows the general magnified part of the RGB signal, the display of which corresponds to several consecutive pixels Analog signal. Because this is an analog signal, the sampling point is very important. For example, the possible sampling points S i and S 2 will produce incorrect data, and the sampling point S 3 will produce correct data, so it provides the maximum Screen image contrast. Once the front line is selected to have the largest contrast At the same time, the line will be sampled several times, each time with a different phase, so as to use analog to digital converters 408-R, 408 — B, 408 — G and other analog RGB data. The delta intensity of the line is stored For each variation in the sampling phase, the results are shown in Figure 12. The maximum delta intensity is used as the optimal phase for the selected sampling, and it is the phase adjusted by the line lock PLL 4 0 4 to provide The clock signal CLK has the optimal phase for sampling. In another embodiment, the sampling phase detection is performed by comparing the intensity of the sampled pixels in different frames. By using the storage device of FIG. The screen control circuit in FIG. 5 is internally stored within 400, and the previous block element intensity is stored and compared with the existing block element intensity. If the sampling phase is correct, the intensity difference (Δ intensity) is minimal値. Similar to the previous phase detection method, once a line is selected to have the maximum intensity, the line will be sampled several times, and each time the RGB data is sampled with a different phase. For each sampling phase, For selected The paper size between the frame of the line applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -19-(Please read the precautions on the back before filling this page)-Install f! 4 Bureau of Intellectual Property, Ministry of Economic Affairs Printed by the Employee Consumption Cooperative 514858 Α7 Β7 V. The difference in the pixel intensity of the invention description (17) is:
(請先閱讀背面之注意事項再填寫本頁) 其中η二在一線上之圖素數目， 先前框之圖素強度， P ^ =現有框之圖素強度 △強度係以取樣相位而對每個變異儲存，而其結果係 如圖1 3所示。該最小△強度値係提供最佳取樣相位。 經濟部智慧財產局員工消費合作社印製 在本發明之一實施例中，係以1 / 1 0之增加而改變 鎖住P L L 4 0 4之相位，假設係以1 0個相位而取樣， 其中係選擇最佳的（如圖1 0之步驟1 0 2，1 〇 3以及 10 4)。經考慮之十個相位，十個框係經需要以接續得 到相位/( △強度）量測，其係爲6 0 Η z模式需要 1 / 6秒。當開機時，最好於短暫的週期時，該相同影像 資訊將被送至螢幕（雖然該螢幕最好係由螢幕控制電路 4 0 0而予以變白，如前述而因此可作成一正確決定 (圖1 0之步驟1 0 5 )，而選擇該相關相位角度以取樣 (圖1〇之步驟1 0 6 )。 在另一實施例中，係使用多數個相位延遲時脈，以對 類比R G Β信號同步取樣，允許更快速的決定取樣之最佳 相位。 此說明書中之所有發表以及專利申請案係以相同程度 而參考，而可將每個個別發表或專利應用視爲特定而個別 -20- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 514858 A7 B7 五、發明說明（18) 參考。 本發明現已詳述，對於熟知此技藝者應知對於其之許 多改變以及修改可在不脫離以下所附之申請專利範圍之精 神以及範圍下而實施。 (請先閱讀背面之注音？事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 -21 - 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）(Please read the notes on the back before filling this page) where η is the number of pixels on the line, the intensity of the pixels in the previous frame, P ^ = the intensity of the pixels in the existing frame, △ intensity is based on the sampling phase for each Variation is stored, and the results are shown in Figure 13. This minimum delta intensity does not provide the best sampling phase. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. In one embodiment of the present invention, the phase of the locked PLL 4 04 is changed by an increase of 1/10, assuming that the sampling is performed at 10 phases, where Choose the best one (see steps 10, 102, 103, and 104). After considering the ten phases, the ten frames need to be measured by successively obtained phase / (△ intensity), which is 60 Η z mode takes 1/6 seconds. When powering on, it is best to send the same image information to the screen in a short period of time (although the screen is preferably whitened by the screen control circuit 400, as described above and therefore a correct decision can be made ( Step 10 5 in FIG. 10), and select the correlation phase angle to sample (Step 10 6 in FIG. 10). In another embodiment, a plurality of phase delay clocks are used to compare the analog RG Β Synchronous sampling of signals allows faster determination of the optimal phase of sampling. All publications and patent applications in this specification are referred to the same extent, and each individual publication or patent application can be considered as specific and individual -20- This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 514858 A7 B7 V. Description of the invention (18) Reference. The present invention has been described in detail, and those skilled in the art should know many changes to it. And the modification can be implemented without departing from the spirit and scope of the scope of patent application attached below. (Please read the note on the back? Matters before filling out this page.) Employee Consumer Cooperatives, Intellectual Property Bureau, Ministry of Economy System -21-- this paper scale applicable Chinese National Standard (CNS) A4 size (210 X 297 mm)