TW200532613A - Controller for color liquid crystal display and method - Google Patents

Controller for color liquid crystal display and method Download PDF

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Publication number
TW200532613A
TW200532613A TW93108685A TW93108685A TW200532613A TW 200532613 A TW200532613 A TW 200532613A TW 93108685 A TW93108685 A TW 93108685A TW 93108685 A TW93108685 A TW 93108685A TW 200532613 A TW200532613 A TW 200532613A
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Taiwan
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color
gray scale
green
red
display
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TW93108685A
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Chinese (zh)
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Eric Huang
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Seiko Epson Corp
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Priority to TW93108685A priority Critical patent/TW200532613A/en
Publication of TW200532613A publication Critical patent/TW200532613A/en

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Abstract

A controller for color liquid crystal display (LCD) includes the first counter, the second counter, the third counter and data processing mechanism. The data processing mechanism is provided with color look-up table. The data processing mechanism enhances the displayed gray scale of the corresponding pixel in the color LCD according to counting values of the first, the second and the third counters and the index part of red, green, or blue color input signal.

Description

200532613 (1 ) 玖、發明說明 【發明所屬之技術領域】 本發明係關於用於彩色液晶顯示器之控制器及方法, 特別是,關於可以以接近較高位元的灰度驅動較低位元灰 度的彩色液晶顯示器之控制器及方法。 【先前技術】 近年來,各種不同型式之液晶顯示面板廣泛應用於各 領域,舉例而言,行動電話、個人數位助理、數位相機等 行動設備、以及其它設有顯示裝置的設備。在操作上,顯 示系統中來自例如主機板等裝置的顯示訊號會先輸入至顯 示系統內的控制器,再經由控制器處理以驅動液晶顯示面 板。舉例而言,在彩色液晶顯示面板中,如圖6所示,自 主機單元60輸出的顯示資料訊號會輸入至顯示系統6 1的 控制器6 1 2,在經過控制器6 1 2處理之後’再輸出訊號至 液晶顯示器6 1 3以驅動其顯示。一般而言’如果液晶顯示 面板係爲6位元灰度型式時,則其接受的外部訊號的格式 係爲6位元,對應的控制器亦僅能處理6位元之訊號。因 此,其顯示效果係爲6位元解析的效果。 此外,由於市場上有不同灰度解析度的液晶顯示器, 而不同灰度的液晶顯示器會受符合其灰度之控制器驅動。 舉例而言,6位元控制器用於6位元灰度的液晶顯示器’ 8位元控制器用於8位元灰度的液晶顯不器。 因此,需要一種控制器,可以用於驅動灰度等級不同 -4 - 200532613 (2) 的液晶顯示器’且用於驅動灰度等級較低的液晶顯示器時 ,可以使其具有近似灰度等級較高的顯示器之效果,具有 增進顯示效果及降低成本等優點。 【發明內容】 本發明的目的在於提供一種控制器及方法,能夠增進 彩色液晶顯不梯1的灰度’能夠允許驅動具有不同灰度規格 的彩色液晶顯示器。 根據本發明的一態樣,提供彩色液晶顯示面板之控制 器,包括:第一計數器,接收第一訊號以計數而產生第一 計數値;第二計數器,接收第二訊號以計數而產生第二計 數値;第三計數器’接收第三訊號以計數而產生第三計數 値;及資料處理機構,接收具有預定格式的紅、綠、藍顏 色輸入訊號和第一、第二和第三計數値,以及設有顏色查 詢表’該預定格式包含索引部份及灰階値部份,該顏色查 詢表儲存有預定位置的紅、綠、藍顏色顯示模式,其中, 當該資料處理機構根據該第一、第二及第三計數値以及該 紅、綠、或藍顏色輸入訊號的索引部份,在該查詢表中查 到對應的顏色顯示模式爲開啓顯示,且該灰階値部份不等 於第一及不等於第二預設値時,將該灰階値部份的値加上 預疋値’以使該彩色液晶顯不器中的對應像素以對應於 該灰階値加上一預定値所代表之灰階來顯示。 根據本發明的又一態樣,提供控制彩色液顯示器之方 法’包括下述步驟:製備查詢表,該查詢表儲存有預定位 -5- 200532613 (3) 置的紅、綠、藍顏色顯示模式;接收具有預定格式之紅、 綠、藍顏色訊號’該預定格式包含索引部份及灰階値部份 ;接收分別代表欲顯示的畫面之格數、列數及行數之第一 、第二及第三訊號;根據該索引部份、第一、第二及第三 訊號檢查該查詢表中對應的紅、綠、或藍顯示模式,以及 比較該灰階値部份與預設値,當該對應的顏色顯示爲開啓 顯示且該灰階値部份的値不等於預設値時,將該灰階値部 份的値加上一預定値,以使該彩色液晶顯示器中的對應像 素以對應於該灰階値加上一預定値之灰階來顯示。 【實施方式】 將於下說明根據本發明的實施例。 圖1係方塊圖,顯示根據本發明實施例之彩色液晶顯 示器控制器1 0的架構。如圖1所示,控制器1 〇包括格計 數器Π、線計數器1 2、點計數器1 3、資料處理區1 4。格 計數器1 1用以接收來自外部的垂直掃描訊號Vsync,線 計數器1 2會接收來自外部的線訊號De,點計數器1 3接 收來自外部的點訊號Dclk。這些計數器會根據所收到的 輸入訊號計數並將結果輸出至資料處理區1 4。資料處理 區14也接收來自外部的紅、綠、藍顏色(以下簡稱 R/G/B)輸入訊號。資料處理區14根據R/G/B輸入訊號 以及計數器的輸出以產生用於驅動彩色液晶顯示器之訊號 ’其詳細ί荣作將於下說明。 接著’參考圖2,進一步說明根據本發明的實施例之 -6 - 200532613 (4) 控制器1 〇的資料處理區1 4之架構。如圖2所示,來自外 部的R/G/B輸入訊號首先輸入至選擇器141。選擇器141 根據預先的設定,使輸入的R/G/B訊號經由不同路徑輸出 至彩色液晶顯示器。舉例而言,假使選擇器1 4 1的致動訊 號經設定爲低位準時,R/G/B輸入訊號會直接輸入至位元 合倂器142,在位元合倂器142中,將輸入的R/G/B訊號 之資料位元加上預定數目的位元。舉例而言,當根據本實 施例的控制器係可以驅動6 / 8位元的彩色液晶顯示器時 ,當使用者欲以此控制器接收6位元的R/G/B訊號輸入以 驅動6位元灰度之液晶顯示器時,則輸入之R/G/B訊號無 須作任何處理,因此,選擇器1 4 1會被供予低位準的致動 訊號,以使R/G/B訊號未經處理而輸入至位元合倂器142 ,在位元合倂器142中,將R/G/B訊號分別加上二位元, 使R/G/B輸出均變成8位元的格式,其中,舉例而言,加 入的二位元係成爲最高位元分別爲第0至第7位元之八位 元中的第6、及第7位元,此二位元的値可設爲00。結果 ,根據本發明之控制器1 0的R/G/B輸出爲8位元,使用 者若要驅動6位元彩色液晶顯示器時,可依所需選擇第0 至5位元以作爲彩色液晶顯示器之輸入訊號。 當選擇器1 4 1受高位準的致動訊號驅動時,具有預定 格式的R/G/B輸入訊號會輸入至比較機構143。根據本實 施例,R/G/B輸入訊號的預定格式包含索引部份及灰階値 部份。在比較機構143中,會根據R/G/B訊號中索引部份 的位元的値、以及自計數器1 1、1 2、及1 3輸入的計數値 -7- 200532613 (5) (在圖2中未示出),判斷設於比較機構1 43中的查詢表 (未不出)中封應的威色訊號是否爲開啓顯不,若爲否, 則將R/G/B輸入訊號中的灰階値部份的全部位元輸出至位 元合倂器1 4 2,如上所述般加上預定位元數並輸出。若爲 是,則進一步判斷灰階値部份的値是否等於預設値,若爲 否,將灰階値部份的値加上一預設値,然後輸出至位元合 倂器1 42,再如上所述般與預定數目的位元合倂後輸出, 若爲是,則輸出至位元合倂器1 4 2,再如上所述般與預定 數目的位元合倂後輸出。於下以舉例方式具體說明資料處 理區1 4之操作。 首先,舉例說明R/G/B訊號的格式。如圖2所示,當 輸入訊號R/ G/ B中各顏色訊號具有8位元格式時,最 低的二位元(亦即,第0及第1位元)爲索引部份,標示 該顏色訊號的灰階程度,其餘6位元代表該顏色的灰階値 。在此情形中,共有四種可能的灰階程度,分別爲代表灰 階程度〇的二位元0 0、代表灰階程度1 /4的二位元〇 1、 代表灰階程度2 /4的二位元値1 〇、及代表灰階程3 /4的二 位元1 1,而灰階値部份代表從〇至6 3之灰階値。 R/G/B訊號中的灰階程度係根據著名的魔術方塊法( Magic-Square-Method),將驅動液晶顯示器之R/G/B輸 入訊號顯示樣式區分成屬於1 /4、2/4、及3/4灰階程度, 根據此方法,將四個不同顯示畫面格中各點處的R/G/B像 素是否顯示之資訊作成查詢表,查詢表可以以硬體 '或韌 體等方式實施。液晶顯示器的控制器在收到R/G/B輸入訊 200532613 (6) 號時’會根據格輸入計數器11輸出的計數値、線計數器 1 2輸出的5十數値、點計數器1 3輸出的計數値、以及輸入 訊號所標示的索引部份的灰階程度,判斷查詢表中對應的 顏色訊號的顯示模式是否爲開啓顯示,以決定是否要增強 灰階藏不。現在參考圖3、4、及5進一步說明。圖3、4 、及5分別以示意圖說明包含1/4、2/4及3/4灰階程度的 查詢表,其中,在圖3中顯示第〇格至第3格共四格各點 處R/G/B顏訊號的顯示模式,每一格顯示有〇〇、〇1、1〇 、及1 1四條線和四個點〇、1、2、3,各點處各顏色開啓 顯示係以陰影表示,關閉顯示係以空白表示。由RGB構 成的點對應於顯示畫面上由RGB三像素所構成的一顯示 點。 現在’以舉例方式說明根據本實施例之操作。當總共 24位元的RGB資料(R/g/Β各8位元)輸入至資料處理 區14,選擇器141受高位準致動訊號致動時,r/g/Β資料 會輸入至比較機構1 43,比較機構1 43會先檢查R/G/Β訊 號中代表灰階位準的位元之値,若位元値爲00,則將該 訊號中代表灰階値的6位元直接輸入至位元合倂器1 42中 ’於其中將00的二位元與該6位元合倂成爲8位元,接 著輸出至彩色液晶顯示器以控制其顯示,此加入的二位元 作爲合倂而成的8位元中最高效的二位元。如果輸入的 R/G/B訊號的灰階程度之値爲〇1、10、1 1 (分別對應於 1 “灰階程度、2/4灰階程度、及3/4灰階程度),則比較 機構1 43會根據目前之格計數器1 1、線計數器1 2及點計 -9- 200532613 (7) 數器1 3的計數値,而於查詢表中比對對應的R/G/B顯示 模式是爲開啓顯示或關閉顯示,若查詢表中的顯示模式爲 關閉顯不,則該訊號的6位元灰階値會如上所述般輸入至 位元合倂器142中加上〇〇二位元成爲合倂的8位元,接 著輸出至液晶顯示器以驅動其顯示。如果查詢表中對應的 顏色訊號爲開啓顯示模式,則判斷該訊號中代表灰階値的 6位元之値是否等於6 3或0,若否,則加上一預定値再輸 出至位元合倂器1 4 2中,加上〇 〇二位元成爲合倂的8位 元,若爲是,則直接輸出至位元合倂器142中與〇〇二位 兀合併成爲8位兀輸出’驅動液晶顯不器顯示。 舉例而言,若輸入之R/G/B資料爲 0 1 00 000 1 1 000 1 000 1 1 1 1 1 1 1 1,格計數器 n、線計數器 12 、及點計數器1 3輸出的計數値分別爲〇、0、〇時,則比 較機構1 4 3在比對查詢表中1 / 4灰階程度(L S B = 0,1 )第 〇格、第〇〇行、第〇點標示紅色訊號的顯示模式爲開啓 顯示(圖3中第0格以圓圈圈示處),且輸入紅色訊號之 6位元値(0 0 0 0 0 1 )不等於〇或6 3時,則將該〇 〇 〇 〇 〇 1値 加上1成爲0000010,再將其輸出至位元合倂器142與00 二位元合倂而成爲0000 1 000,比較機構141亦比對查詢 表中2M灰階程度(LSB = l,〇 )中第〇格第〇行第〇點的 綠色(G )顯示模式是否爲開啓顯示,而比對結果爲對應 的綠色顯示模式爲未開啓顯示,則將該綠色訊號的6位元 値001000直接輸入至位元合倂器142中與00二位元合倂 成爲00100000之8位元輸出。資料處理機構141也比對 -10- 200532613 (8) 查詢表中3/4灰階程度(LSB = 1,〇 )第〇格、第〇行、第 0點中對應的監色(Β )顯示模式是否爲開啓顯示,經比 對後確定爲開啓顯不,但發現其6位元値爲1 1 1 1 1 1,因 此,將111111等6位兀輸入至位元合倂器142再與〇〇二 位兀合倂而成爲1 1 1 1 1 1 0 0之8位元輸出。彩色液晶顯示 器根據收到的最終R/G/B訊號,驅動對應位置的像素依灰 階値部份的灰階値顯示。 於上述中,以舉例而非限定方式說明本發明的實施例 ,應瞭解習於此技藝者在不惇離本發明的精神及申請專利 範圍所界定的範圍之下,可以作任何變化、變異及修改。 本發明之範圍係由後附之申請專利範圍所界定。 【圖式簡單說明】 在參考附圖之上述說明中,可以更瞭解本發明的原理 、特點及優點等等,其中, 圖1係顯示根據本發明的實施例之控制器架構; 圖2係顯示根據本發明的實施例之控制器中資料處理 區的架構; Β1 3至5係用以解釋根據本發明的實施例所使用之查 詢表的架構及其操作方式;及 圖6係說明主機單元與顯示系統之間的連接。 【主要元件對照表】 10 控制器 -11 - 200532613200532613 (1) 发明 Description of the invention [Technical field to which the invention belongs] The present invention relates to a controller and method for a color liquid crystal display, and in particular, to the ability to drive lower-bit grayscales with grayscales closer to higher-bit Controller and method of color liquid crystal display. [Prior art] In recent years, various types of liquid crystal display panels have been widely used in various fields, for example, mobile phones, personal digital assistants, digital cameras and other mobile devices, and other devices provided with display devices. In operation, the display signals from devices such as the motherboard in the display system are first input to the controller in the display system, and then processed by the controller to drive the liquid crystal display panel. For example, in a color liquid crystal display panel, as shown in FIG. 6, the display data signal output from the host unit 60 is input to the controller 6 1 2 of the display system 6 1 and is processed by the controller 6 1 2 ' Then output a signal to the LCD 6 1 3 to drive its display. Generally speaking, if the LCD panel is a 6-bit gray scale, the format of the external signal it accepts is 6-bit, and the corresponding controller can only process 6-bit signals. Therefore, the display effect is the effect of 6-bit analysis. In addition, since there are liquid crystal displays with different grayscale resolutions on the market, liquid crystal displays with different grayscales will be driven by a controller that matches their grayscale. For example, a 6-bit controller is used for a 6-bit grayscale liquid crystal display. An 8-bit controller is used for an 8-bit grayscale liquid crystal display. Therefore, there is a need for a controller that can be used to drive LCD monitors with different gray levels--200532613 (2), and when used to drive LCD monitors with lower gray levels, they can have approximately higher gray levels The effect of the display has the advantages of improving the display effect and reducing the cost. SUMMARY OF THE INVENTION An object of the present invention is to provide a controller and a method capable of improving the gray scale of a color liquid crystal display ladder 1 'and allowing driving of color liquid crystal displays having different gray scale specifications. According to an aspect of the present invention, a controller for providing a color liquid crystal display panel includes: a first counter that receives a first signal to generate a first count; and a second counter that receives a second signal to generate a second count. A counting counter; a third counter 'receiving a third signal to generate a third counting counter; and a data processing mechanism receiving a red, green, and blue color input signal and a first, second, and third counting counter having a predetermined format, And a color query table is provided, the predetermined format includes an index part and a gray scale part, and the color query table stores red, green, and blue color display modes at predetermined positions, and when the data processing organization according to the first , The second and third counts, and the index part of the red, green, or blue color input signal, the corresponding color display mode is turned on in the lookup table, and the gray scale part is not equal to the first When the sum is not equal to the second preset frame, the gray frame portion is added with a pre-frame, so that the corresponding pixel in the color liquid crystal display corresponds to the gray frame frame plus one. The gray scale represented by 値 is displayed. According to yet another aspect of the present invention, a method for controlling a color liquid display is provided. The method includes the following steps: preparing a look-up table storing a predetermined position of the display mode of red, green, and blue colors at a position of -5- 200532613 (3) Receive red, green, and blue color signals with a predetermined format 'the predetermined format includes an index part and a gray scale part; receive the first and second numbers representing the number of grids, columns, and rows of the screen to be displayed, respectively And the third signal; check the corresponding red, green, or blue display mode in the look-up table according to the index part, the first, second, and third signals, and compare the gray scale 値 part with the preset 当, when When the corresponding color is displayed as on and the gray scale part of the gray scale is not equal to the preset color, the gray scale part of the gray scale is added to a predetermined frame so that the corresponding pixel in the color liquid crystal display starts with A gray scale corresponding to the gray scale is added to display a predetermined gray scale. [Embodiment] An embodiment according to the present invention will be described below. FIG. 1 is a block diagram showing a structure of a color liquid crystal display controller 10 according to an embodiment of the present invention. As shown in FIG. 1, the controller 10 includes a grid counter Π, a line counter 1, 2, a point counter 1, and a data processing area 14. The counter 1 1 is used to receive the vertical scanning signal Vsync from the outside, the line counter 1 2 is to receive the external line signal De, and the point counter 1 3 is to receive the external point signal Dclk. These counters count the input signals received and output the results to the data processing area 1 4. The data processing area 14 also receives external red, green, and blue colors (hereinafter referred to as R / G / B) input signals. The data processing area 14 generates a signal for driving a color liquid crystal display based on the input signal of R / G / B and the output of the counter, and its detailed operation will be described below. Next ', referring to Fig. 2, the structure of the data processing area 14 of the controller 10 will be further explained according to the embodiment of the present invention. As shown in FIG. 2, the R / G / B input signal from the outside is first input to the selector 141. The selector 141 causes the input R / G / B signals to be output to the color liquid crystal display via different paths according to a preset setting. For example, if the actuation signal of the selector 1 4 1 is set to a low level, the R / G / B input signal will be directly input to the bit coupler 142. In the bit coupler 142, the input The data bits of the R / G / B signal plus a predetermined number of bits. For example, when the controller system according to this embodiment can drive a 6 / 8-bit color LCD, when a user wants to use the controller to receive a 6-bit R / G / B signal input to drive a 6-bit In the case of a gray-scale LCD, the input R / G / B signal does not need to be processed. Therefore, the selector 1 4 1 will be supplied with a low-level actuation signal so that the R / G / B signal is not transmitted. It is processed and input to the bit combiner 142. In the bit combiner 142, the R / G / B signal is added to two bits respectively, so that the R / G / B output becomes an 8-bit format, where For example, the added two-bit system becomes the 6th and 7th of the eighth bits of the 0th to 7th bits, and the two-bit 値 can be set to 00. As a result, the R / G / B output of the controller 10 according to the present invention is 8 bits. When a user wants to drive a 6-bit color liquid crystal display, he can select bits 0 to 5 as the color liquid crystal as required. Input signal of the display. When the selector 1 41 is driven by a high-level actuation signal, an R / G / B input signal having a predetermined format is input to the comparison mechanism 143. According to this embodiment, the predetermined format of the R / G / B input signal includes an index portion and a gray scale 値 portion. In the comparison mechanism 143, according to the bit 値 of the index part of the R / G / B signal and the count input from the counters 1, 1, 2, and 1 値 -7- 200532613 (5) (in the figure (Not shown in 2), judging whether the prestigious prestige signal in the look-up table (not shown) set in the comparison mechanism 1 43 is on or off, if not, enter R / G / B into the signal All the bits of the gray-scale frame part of the pixel are output to the bit coupler 1 4 2, and a predetermined number of bits are added and output as described above. If yes, then further judge whether the 値 in the gray scale 値 part is equal to the preset 値, if not, add the 値 in the gray 値 part to a preset 値, and then output it to the bit combiner 1 42. Then, it is outputted after being combined with a predetermined number of bits as described above, and if yes, it is output to the bit combiner 1 4 2 and then outputted after being combined with a predetermined number of bits as described above. The operation of the data processing area 14 is described in detail below by way of example. First, an example of the format of the R / G / B signal will be described. As shown in Figure 2, when the color signal in the input signal R / G / B has an 8-bit format, the lowest two bits (that is, the 0th and 1st bits) are indexed to indicate the color The gray level of the signal. The remaining 6 bits represent the gray level of the color. In this case, there are four possible levels of grayscale, which are two-digit 0 0 representing the gray-scale degree 0, two-bit 〇1 representing the gray-scale degree 1/4, and one representing the gray-scale degree 2/4. The binary bit 値 1 0 and the binary bit 1 1 representing the gray scale 3/4, and the gray scale 値 part represents the gray scale 从 from 0 to 63. The gray level in the R / G / B signal is based on the well-known Magic-Square-Method, which divides the display style of the R / G / B input signal that drives the LCD into 1/4, 2/4. , And 3/4 gray levels. According to this method, information about whether R / G / B pixels are displayed at each point in four different display frames is made into a query table. The query table can be in hardware or firmware. Way to implement. When the LCD controller receives the R / G / B input signal 200532613 (6), it will 'count according to the count output by the grid input counter 11', the line counter 1 2 output 50 digits, and the point counter 1 3 output Count 値 and the gray level of the index part marked by the input signal to determine whether the display mode of the corresponding color signal in the look-up table is on display to determine whether to enhance the gray level. Reference will now be made further with reference to FIGS. 3, 4, and 5. Figures 3, 4, and 5 illustrate the look-up tables containing 1/4, 2/4, and 3/4 grayscale levels in schematic diagrams. Among them, grids 0 to 3 are displayed at four points in Figure 3. R / G / B color signal display mode, each grid displays 〇〇, 〇1, 〇, and 411 four lines and four points 〇, 1,2,3, each color of each point to open the display system Shaded, closed display is blank. A dot constituted by RGB corresponds to a display point constituted by three RGB pixels on a display screen. Now, the operation according to this embodiment will be described by way of example. When a total of 24 bits of RGB data (8 bits each for R / g / B) are input to the data processing area 14 and the selector 141 is actuated by a high level actuation signal, r / g / B data is input to the comparison mechanism 1 43, the comparison mechanism 1 43 will first check the R / G / B signal to represent the bit level of the gray level, if the bit bit is 00, then directly input the 6 bits representing the gray level in the signal In the bit combiner 1 42, the two bits of 00 are combined with the 6 bits into 8 bits, and then output to a color liquid crystal display to control its display. The added two bits are used as a combination. The most efficient bit of the 8 bits. If the gray level of the input R / G / B signal is 0, 10, 1 1 (corresponding to 1 "gray level, 2/4 gray level, and 3/4 gray level, respectively), then Comparator 1 43 will compare the corresponding R / G / B display in the look-up table according to the current count of counter 1, 1, line counter 1, 2 and point counter-9- 200532613 (7) Counter 1 3 The mode is to turn on or off the display. If the display mode in the look-up table is to turn off the display, the 6-bit gray scale of the signal will be input to the bit combiner 142 as described above plus 0.02. The bit becomes a combined 8-bit, and is then output to the liquid crystal display to drive its display. If the corresponding color signal in the look-up table is the display mode turned on, it is determined whether the 6-bit of the signal representing gray-scale 値6 3 or 0, if not, add a predetermined frame and then output it to the bit combiner 1 4 2 and add 00 bit as the combined 8 bit, if yes, directly output to The bit combiner 142 is merged with 00 bits to form an 8-bit output, which drives the LCD display. For example, if the input R / G / B The data is 0 1 00 000 1 1 000 1 000 1 1 1 1 1 1 1 1 1 and the counts output by the division counter n, line counter 12 and point counter 13 are 0, 0, 0, then the comparison mechanism 1 4 3 In the comparison query table, the 1/4 gray level (LSB = 0, 1) indicates that the display mode of the red signal on the 0th row, the 0th row, and the 0th point is on display (the 0th row in FIG. 3 indicates the Circled), and the 6-bit red signal (0 0 0 0 0 1) of the input red signal is not equal to 0 or 63, then add 0 0 0 0 0 1 0 to 0000010, and then Output to the bit combiner 142 and 00 two bits combine to become 0000 1 000, and the comparison mechanism 141 also compares the 2M gray level in the lookup table (LSB = 1, 0) in grid 0, row 0, and 0. If the green (G) display mode of the point is on display, and the comparison result is that the corresponding green display mode is not on display, then the 6-bit signal 001000 of the green signal is directly input into the bit coupler 142 and The 00 two-bit combination is the 8-bit output of 00100000. The data processing mechanism 141 also compares -10- 200532613 (8) 3/4 gray level in the lookup table (LSB = 1, 0) Whether the corresponding monitor color (B) display mode in grid 0, line 0, and point 0 is on display. After comparison, it is determined to be on display, but it is found that its 6-bit value is 1 1 1 1 1 1 Therefore, 6 bits such as 111111 are input to the bit combiner 142 and then combined with 200 bits to form 8-bit outputs of 1 1 1 1 1 1 0 0. According to the final R / G / B signal received, the color LCD monitor drives the pixels in the corresponding position to display according to the gray scale of the gray scale. In the above, the embodiments of the present invention are described by way of example and not limitation. It should be understood that those skilled in the art can make any changes, variations and modifications without departing from the spirit of the present invention and the scope defined by the scope of patent application. modify. The scope of the present invention is defined by the appended patent application scope. [Brief description of the drawings] In the above description with reference to the drawings, the principles, features, and advantages of the present invention can be better understood. Among them, FIG. 1 shows a controller architecture according to an embodiment of the present invention; FIG. 2 shows The architecture of the data processing area in the controller according to the embodiment of the present invention; B1 3 to 5 are used to explain the structure of the look-up table used in the embodiment of the present invention and its operation mode; and FIG. 6 illustrates the host unit and the Show connections between systems. [Comparison of main components] 10 Controller -11-200532613

(9) 11 格計數器 1 2 線計數器 13 點計數器 14 資料處理區 141 選擇器 142 位元合倂器 143 比較機構 60 主機單元 61 顯示系統 6 12 控制器 613 液晶顯示器(9) 11 division counter 1 2-line counter 13 point counter 14 data processing area 141 selector 142 bit combiner 143 comparison mechanism 60 main unit 61 display system 6 12 controller 613 LCD display

-12--12-

Claims (1)

200532613 (1) 拾、申請專利範圍 1. 一種彩色液晶顯示面板之控制器,包括: 第一計數器,接收第一訊號以計數而產生第一計數値 第二計數器,接收第二訊號以計數而產生第二計數値 第三計數器,接收第三訊號以計數而產生第三計數値 資料處理機構,接收具有預定格式的紅、綠、藍顏色 輸入訊號以及第一、第二和第三計數値,以及設有顏色查 詢表,該預定格式包含索引部份及灰階値部份,該顏色查 詢表儲存有預定位置的紅、綠、藍顏色顯示模式,其中, 當該資料處理機構根據該第一、第二及第三計數値以及該 紅、綠、或藍顏色輸入訊號的索引部份,在該查詢表中查 到對應的顏色顯示模式爲開啓顯示,且該灰階値部份不等 於第一及第二預設値時,將該灰階値部份的値加上一預定 値,以使該彩色液晶顯示器中的對應像素以對應於該灰階 値加上一預定値所代表之灰階來顯示。 2 .如申請專利範圍第1項之控制器,又包含切換機構 ,根據預先之設定,使該紅、綠、藍顏色輸入訊號不經過 該資料處理機構而輸出至該彩色液晶顯示器。 3 .如申請專利範圍第1項之控制器,其中,該紅、綠 、藍顏色輸入訊號之資料格式均爲8位元,以及,該索引 部份具有二位元,該灰階値部份具有6位元。 -13- 200532613 (2) 4.如申請專利範圍第3項之控制器,其中,該第一及 第二預設値分別爲0及63,以及預定値爲1。 5 · —種控制彩色液顯示器之方法,包括下述步驟: 製備查詢表,該查詢表儲存有預定位置所對應之紅、 綠、或藍顏色顯示是否開啓之標示; 接收具有預定格式之紅、綠、藍顏色訊號,該預定格 式包含索引部份及灰階値部份; 接收分別代表欲顯示的畫面之格數、列數及行數之第 一、第二及第三訊號; 根據該索引部份、第一、第二及第三訊號檢查該查詢 表中對應的紅、綠、或藍顏色的顯示模式,以及比較該灰 階値部份與第一及第二預設値,當對應的顏色顯示模式爲 開啓顯示且該灰階値部份的値不等於第一及第二預設値時 ,將該灰階値部份的値加上一預定値,以使該彩色液晶顯 示器中的對應像素以對應於該灰階値加上一預定値的灰階 來顯示。 6 ·如申請專利範圍第5項之方法,其中,該預定格式 爲8位元格式,以及該索引部份具有二位元,該灰階値部 份具有6位元,以及’其中,該第一及第二預設値分別爲 〇及63,該預設値爲1。 7 ·如申請專利範圍第5項之方法,其中,該查詢表係 爲硬體形式。 8 ·如申請專利範圍第5項之方法,其中,該查詢表係 爲韌體形式。 -14 -200532613 (1) Scope of patent application 1. A controller for a color liquid crystal display panel, comprising: a first counter, which receives a first signal to count to generate a first count; a second counter, which generates a count when receiving a second signal; A second counter, a third counter, receiving a third signal to generate a third counter, a data processing mechanism, receiving a red, green, and blue input signal having a predetermined format, and first, second, and third counters; and A color query table is provided. The predetermined format includes an index part and a gray scale part. The color query table stores red, green, and blue color display modes at predetermined positions. Wherein, when the data processing organization according to the first, The second and third counts, and the index part of the red, green, or blue color input signal, the corresponding color display mode in the lookup table is turned on, and the gray level part is not equal to the first And the second preset frame, a predetermined frame is added to the frame of the gray scale frame so that the corresponding pixel in the color liquid crystal display corresponds to the gray frame frame. Represented by a gray scale of predetermined Zhi displayed. 2. If the controller of item 1 of the patent application scope also includes a switching mechanism, the red, green, and blue color input signals are output to the color liquid crystal display without going through the data processing mechanism according to a preset setting. 3. If the controller of item 1 of the scope of patent application, the data format of the red, green, and blue color input signals are all 8 bits, and the index part has two bits, and the gray scale part Has 6 bits. -13- 200532613 (2) 4. If the controller of the third item of the scope of patent application, the first and second preset 値 is 0 and 63, and the predetermined 値 is 1, respectively. 5 · A method for controlling a color liquid display, including the following steps: preparing a look-up table storing a mark indicating whether the red, green, or blue color corresponding to a predetermined position is turned on; receiving a red, Green and blue color signals, the predetermined format includes an index part and a gray scale part; receiving the first, second, and third signals representing the number of grids, columns, and rows of the screen to be displayed respectively; according to the index Part, first, second, and third signals check the corresponding red, green, or blue color display mode in the look-up table, and compare the grayscale part with the first and second presets. When the color display mode is on display and the 値 of the gray scale 値 part is not equal to the first and second preset ,, the 値 of the gray scale 値 part is added to a predetermined 値 to make the color LCD display The corresponding pixels of are displayed at a gray level corresponding to the gray level plus a predetermined level. 6. The method according to item 5 of the scope of patent application, wherein the predetermined format is an 8-bit format, and the index part has two bits, the gray scale part has 6 bits, and 'wherein, the The first and second presets are 0 and 63, and the presets are 1. 7 · The method of claim 5 in the scope of patent application, wherein the lookup table is in hardware form. 8 · The method of claim 5 in the scope of patent application, wherein the lookup table is in the form of firmware. -14-
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8531490B2 (en) 2006-07-13 2013-09-10 Casio Computer Co., Ltd. Display drive apparatus and display apparatus
CN105632424A (en) * 2014-10-29 2016-06-01 新相微电子(开曼)有限公司 Color enhancement algorithm and control enhancement control device for expanding number of displayed gray scales

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8531490B2 (en) 2006-07-13 2013-09-10 Casio Computer Co., Ltd. Display drive apparatus and display apparatus
CN105632424A (en) * 2014-10-29 2016-06-01 新相微电子(开曼)有限公司 Color enhancement algorithm and control enhancement control device for expanding number of displayed gray scales

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