CN100367338C - color display system - Google Patents

Abstract

A color display system, comprising: the color display system can quickly and accurately reflect color brightness gray scale by comparing OD operation reduction values, brightness gray scale values and comparison information input by the OD value operation reduction module, the color signal source and the comparison unit through the multiplex comparison unit to output a result information, and is suitable for various color display devices such as a liquid crystal display (LCD display), a plasma television (PDP), an active matrix (TFT) display or OLED and PLED organic electroluminescent displays.

Description

Translated fromChinese

色彩显示系统color display system

技术领域technical field

本发明是有关于一种色彩显示系统，尤指一种可快速且精确地反应色彩亮度灰阶的色彩显示系统。The present invention relates to a color display system, in particular to a color display system that can quickly and accurately reflect the gray scale of color brightness.

技术背景technical background

液晶显示器性能的好坏有一种指标—响应时间，通常对液晶显示器不加电压下分两种状态：常亮态模式(Normally white，NW)以及常黑态模式(Normallyblack，NB)，其中常亮态模式是指显示器面板不施加电压是透光的画面，也就是亮的画面，常黑态模式是指显示器面板不施加电压时，呈现不透光状态，也就是黑的画面；以常亮态模式为例，可将响应时间分为两个部分：There is an indicator of the performance of the liquid crystal display—response time. Usually, the liquid crystal display is divided into two states without voltage: normally bright state mode (Normally white, NW) and normally black state mode (Normally black, NB). State mode means that the display panel is light-transmitting when no voltage is applied, that is, a bright picture; normally black mode means that when no voltage is applied to the display panel, it is in an opaque state, that is, a black picture; in the always-on state mode as an example, the response time can be divided into two parts:

(1)上升响应时间：即在施加电压下，液晶显示器的液晶盒亮度从90％变化到10％时液晶所需的扭转时间，简称“T_r”；以及(1) Rising response time: that is, under the applied voltage, the twisting time required by the liquid crystal when the brightness of the liquid crystal cell of the liquid crystal display changes from 90% to 10%, referred to as "_Tr "; and

(2)下降响应时间，即在不施加电压下，液晶盒亮度从10％变化到90％时液晶所需的回复时间，简称“T_f”。(2) Falling response time, that is, the recovery time required by the liquid crystal when the brightness of the liquid crystal cell changes from 10% to 90% without applying voltage, referred to as "T_f ".

通常当画面显示速度超过每秒25个图框(frame)时，人眼会将快速变换的画面视为连续画面，但是现在的家庭娱乐，例如播放高品质DVD影片、玩游戏时快速移动的画面，显示速度常在每秒60个图框以上，换句话说，每一图框间隔(frame interval)时间为1/60＝16.67ms，若液晶显示器的响应时间大于此图框间隔时间，将会导致显示画面时就出现残影或跳格的痕迹，严重影响观看影像的品质，如何提升响应速度须从影响响应时间的因素来看，下列方程式分别为上升响应时间T_r与下降响应时间T_f的计算方程式：Usually when the picture display speed exceeds 25 frames per second, the human eye will regard the fast-changing picture as a continuous picture, but the current home entertainment, such as playing high-quality DVD movies, playing games, and fast-moving pictures , the display speed is often above 60 frames per second. In other words, the frame interval of each frame is 1/60=16.67ms. If the response time of the LCD is longer than the frame interval, it will As a result, afterimages or traces of jumping frames appear when the screen is displayed, which seriously affects the quality of viewing images. How to improve the response speed must be viewed from the factors that affect the response time. The following equations are the rising response time T_r and the falling response time T_f respectively. The calculation formula:

${\mathrm{<span><span>T</span>T</span>}}_{\mathrm{<span><span>r</span>r</span>}}<span><span>=</span>=</span>\frac{{\mathrm{<span><span>r</span>r</span>}}_{\mathrm{<span><span>1</span>1</span>}}{\mathrm{<span><span>d</span>d</span>}}^{\mathrm{<span><span>2</span>2</span>}}}{\mathrm{<span><span>\&Delta;\&epsiv;</span>\&Delta;\&epsiv;</span>}<span><span>(</span>(</span>{\mathrm{<span><span>V</span>V</span>}}^{\mathrm{<span><span>2</span>2</span>}}<span><span>-</span>-</span>{{\mathrm{<span><span>V</span>V</span>}}_{\mathrm{<span><span>th</span>the\; th</span>}}}^{\mathrm{<span><span>2</span>2</span>}}<span><span>)</span>)</span>}$${\mathrm{<span><span>T</span>T</span>}}_{\mathrm{<span><span>f</span>f</span>}}<span><span>=</span>=</span>\frac{{\mathrm{<span><span>r</span>r</span>}}_{\mathrm{<span><span>1</span>1</span>}}{\mathrm{<span><span>d</span>d</span>}}^{\mathrm{<span><span>2</span>2</span>}}}{\mathrm{<span><span>\&Delta;\&epsiv;</span>\&Delta;\&epsiv;</span>}{{\mathrm{<span><span>V</span>V</span>}}_{\mathrm{<span><span>th</span>the\; th</span>}}}^{\mathrm{<span><span>2</span>2</span>}}}$

其中γ₁：液晶材料的粘滞系数；Among them γ₁ : viscosity coefficient of liquid crystal material;

d：液晶盒间隙；d: liquid crystal cell gap;

V：液晶盒的驱动电压；V: the driving voltage of the liquid crystal cell;

Δε：液晶材料的介电系数。Δε: Permittivity of the liquid crystal material.

由上式可知有四个方法可以减小液晶显示器响应时间：降低黏滞系数、减小液晶盒间隙、提高驱动电压以及提高介电系数，其中提高驱动电压的技术称之为“加速驱动”(over drive)技术，可由液晶驱动集成电路(driver IC)传送增加的电压至液晶面板上，使液晶的扭转电压加大，从而使液晶更快地扭转与回复以快速达到影像资料欲呈现的亮度。It can be seen from the above formula that there are four ways to reduce the response time of the liquid crystal display: reducing the viscosity coefficient, reducing the liquid crystal cell gap, increasing the driving voltage and increasing the dielectric coefficient. The technology of increasing the driving voltage is called "accelerated driving" ( Over drive) technology can transmit increased voltage to the liquid crystal panel from the liquid crystal drive integrated circuit (driver IC), so that the torsion voltage of the liquid crystal is increased, so that the liquid crystal can be reversed and recovered faster to quickly achieve the brightness that the image data wants to present.

为了针对现行8位元、0到255阶的R、G、B色彩讯号亮度，实施上述的加速驱动技术，各业者必需提供合适的加速驱动电压值。然而，在不同时间点间变化的0-255阶R、G、B色彩讯号亮度，各有其不同需求的加速驱动电压值。光是以一种色彩讯号在二个不同时间点的0-255阶亮度变化来说，就会产生65536种不同的加速驱动电压值。In order to implement the above-mentioned accelerated drive technology for the current 8-bit, 0-255-level R, G, and B color signal luminances, all industry players must provide appropriate accelerated drive voltage values. However, the luminance of the 0-255-level R, G, and B color signals that change at different time points has its own acceleration driving voltage value that requires different requirements. Just take the 0-255 level brightness change of a color signal at two different time points, it will produce 65536 different accelerated driving voltage values.

若一液晶显示屏幕要提供8位元的R、G、B色彩讯号合适的加速驱动电压值，则其必需至少储存有65536种不同的加速驱动电压值，对于记忆体的需求自是不言可喻，更提高了整体成本。因此，各家业者均将0-255阶的色彩讯号亮度以较少的区段来模拟表现，所形成的色彩讯号亮度及所需求的加速驱动电压模拟值也远远少于65536种。If an LCD screen is to provide 8-bit R, G, and B color signals with appropriate acceleration driving voltage values, it must store at least 65,536 different acceleration driving voltage values. The demand for memory is self-evident. Yu, but also increased the overall cost. Therefore, each business operator simulates the brightness of the color signal from 0 to 255 levels with fewer segments, and the resulting brightness of the color signal and the simulated value of the accelerated driving voltage required are far less than 65536 types.

虽然这些加速驱动电压模拟值减少了记忆体的需求，但是，为能使其快速、精确地接近实际加速驱动电压值，各家业者均以不同的特定函数来运算模拟，或是多项式函数，或是双线性函数，又或是正交函数。只是这些方式均囿于上述加速驱动电压模拟值乃以推论、假设方式取得，因此在模拟实际加速驱动电压值上，往往无法精确达成，不仅影响了液晶屏幕的反应时间，更影响了其色彩亮度效果。而当一液晶显示屏幕已达到所欲表现的色彩亮度灰阶要求时，继续取用OD值，反会形成不适当的色彩亮度灰阶表现。Although these acceleration drive voltage simulation values reduce memory requirements, in order to make them quickly and accurately approach the actual acceleration drive voltage value, each business operator uses different specific functions to calculate the simulation, or polynomial functions, or is a bilinear function, or an orthogonal function. However, these methods are all limited to the fact that the simulation value of the above-mentioned acceleration driving voltage is obtained by deduction and assumption. Therefore, it is often impossible to accurately simulate the actual acceleration driving voltage value, which not only affects the response time of the LCD screen, but also affects its color brightness. Effect. And when a liquid crystal display screen has reached the gray scale requirement of the desired color brightness, continuing to use the OD value will result in inappropriate gray scale performance of the color brightness.

有鉴于此，为了改善上述习用的缺点，提供透过函数运算OD值而可快速且精确地反应色彩亮度灰阶的色彩显示系统的新途径，本发明人利用学理研究设计与实验改进，故本发明便因应而生。In view of this, in order to improve the above-mentioned conventional shortcomings, and provide a new approach to the color display system that can quickly and accurately reflect the gray scale of the color brightness through the function calculation of the OD value, the inventors used theoretical research design and experimental improvement, so this Inventions are born accordingly.

发明内容Contents of the invention

本发明的主要目的是提供一种藉由比较前一图框亮度灰阶值与现在图框亮度灰阶值的差异，决定是否取用由函数运算所得的OD值而可快速且精确地反应色彩亮度灰阶的色彩显示系统。The main purpose of the present invention is to provide a method to quickly and accurately reflect the color by comparing the difference between the brightness gray scale value of the previous picture frame and the gray scale value of the current picture frame brightness to determine whether to use the OD value obtained by the function operation. A color display system with gray scales of brightness.

为达上述目的，本发明一种色彩显示系统包括：一色彩讯号源，是用以输入色彩讯号：一画面暂存单元，是用以暂存色彩显示系统的前一图框亮度灰阶值；一储存单元，是用以储存OD压缩值表P、Q、R及S；一OD值运算还原模块，是包括一OD压缩值选取单元、一OD压缩值函数运算单元及一OD压缩值运算还原单元；一比较单元；以及一多工比较单元；其处理步骤包括：To achieve the above purpose, a color display system of the present invention includes: a color signal source, which is used to input the color signal; a picture temporary storage unit, which is used to temporarily store the brightness gray scale value of the previous picture frame of the color display system; A storage unit is used to store OD compressed value tables P, Q, R, and S; an OD value operation restoration module includes an OD compressed value selection unit, an OD compressed value function operation unit and an OD compressed value operation restoration unit; a comparison unit; and a multiplexing comparison unit; its processing steps include:

(1)分别由该画面暂存单元及该色彩讯号源输入前一图框亮度灰阶值以及现在图框亮度灰阶值至该OD值运算还原模块以及该比较单元；(1) Input the previous picture frame brightness gray scale value and the current picture frame brightness gray scale value from the picture temporary storage unit and the color signal source to the OD value calculation restoration module and the comparison unit;

(2)该OD压缩值选取单元以上述现在图框亮度灰阶值以及前一图框亮度灰阶值选取该储存单元所储存的OD压缩值表P、Q、R及S中的特定值而得亮度灰阶值函数g₁(y)、g₂(y)、h₁(x)及h₂(x)，该亮度灰阶值函数g₁(y)、g₂(y)、h₁(x)及h₂(x)经由该OD压缩值函数运算单元运算求得亮度灰阶值函数g(y)及h(x)，所求得的亮度灰阶值函数g(y)及h(x)经由该OD压缩值运算还原单元以函数f(x，y)＝c×h(x)×g(y)运算而得一OD运算还原值；(2) The OD compression value selection unit selects specific values in the OD compression value tables P, Q, R and S stored in the storage unit based on the above-mentioned current picture frame brightness gray scale value and the previous picture frame brightness gray scale value. The brightness grayscale value functions g₁ (y), g₂ (y), h₁ (x) and h₂ (x) are obtained. The brightness grayscale value functions g₁ (y), g₂ (y), h₁ (x) and h₂ (x) are computed by the OD compressed value function operation unit to obtain brightness grayscale value functions g(y) and h(x), and the obtained brightness grayscale value functions g(y) and h (x) through the OD compressed value operation restoration unit, the function f(x, y)=c×h(x)×g(y) is operated to obtain an OD operation restoration value;

(3)该比较单元比较上述现在图框亮度灰阶值以及前一图框输出亮度灰阶值，若该前一图框亮度灰阶值已达到现在图框亮度灰阶值或两者差异为某一误差范围内，则输出一免用OD讯息；以及(3) The comparison unit compares the above-mentioned current picture frame brightness gray scale value with the previous picture frame output brightness gray scale value, if the previous picture frame brightness gray scale value has reached the current picture frame brightness gray scale value or the difference between the two is Within a certain error range, output a free OD message; and

(4)该多工比较单元同时输入上述OD运算还原值、上述现在图框亮度灰阶值及上述免用OD讯息，若该多工比较单元接收到上述免用OD讯息，则输出上述现在图框亮度灰阶值，而若该多工比较单元未接收到上述免用OD讯息，则输出上述OD运算还原值；(4) The multiplexing comparison unit simultaneously inputs the above-mentioned OD operation reduction value, the brightness gray scale value of the above-mentioned current picture frame and the above-mentioned exempt OD message, if the multiplex comparison unit receives the above-mentioned exempt OD message, then outputs the above-mentioned current image frame brightness grayscale value, and if the multiplexing comparison unit does not receive the above-mentioned OD-free message, then output the above-mentioned OD operation restoration value;

藉此，可使该色彩显示系统快速且精确地反应色彩亮度灰阶。Therefore, the color display system can quickly and accurately respond to the gray scale of color brightness.

附图说明Description of drawings

图1所示为本发明第一实施例的系统架构图。FIG. 1 is a system architecture diagram of the first embodiment of the present invention.

图2所示为本发明第一实施例的步骤图。FIG. 2 is a step diagram of the first embodiment of the present invention.

图3所示为本发明第二实施例的系统架构图。FIG. 3 is a system architecture diagram of the second embodiment of the present invention.

图4所示为本发明第二实施例的步骤图。FIG. 4 is a step diagram of the second embodiment of the present invention.

图号说明Description of figure number

1  色彩显示系统1 color display system

10 画面暂存单元     20 色彩讯号源10 picturetemporary storage unit 20 color signal source

30 储存单元         40 OD值运算还原模块30storage unit 40 OD value operation restoration module

50 比较单元         60 多工比较单元50 compareunits 60 multiplex compare units

41 OD压缩值选取单元 42 OD压缩值函数运算单元41 OD compressedvalue selection unit 42 OD compressed value function operation unit

43 OD压缩值运算还原单元43 OD compressed value operation restoration unit

44温度补偿单元44 temperature compensation unit

具体实施方式Detailed ways

本发明的一种色彩显示系统，是指一种藉由比较前一图框亮度灰阶值与现在图框亮度灰阶值的差异，决定是否取用由函数运算所得的加速驱动(overdriving)电压值(亦称OD值)而可快速且精确地反应色彩亮度灰阶的色彩显示系统，可适用于各类色彩显示装置，例如电浆电视、主动式矩阵显示器或OLED、PLED有机电激发光显示器。A color display system of the present invention refers to a method for determining whether to use the overdriving voltage obtained by the function operation by comparing the difference between the brightness gray scale value of the previous picture frame and the gray scale value of the current picture frame brightness. Value (also known as OD value) and can quickly and accurately reflect the color display system of the gray scale of color brightness, which can be applied to various color display devices, such as plasma TV, active matrix display or OLED, PLED organic electroluminescent display .

请参阅图1，本发明的色彩显示系统1，包括：画面暂存单元10，其是用以暂存色彩显示系统1的前一图框亮度灰阶值，色彩讯号源20，是用以输入色彩讯号：储存单元30，是用以储存OD压缩值表P、Q、R及S，OD值运算还原模块40，是包括OD压缩值选取单元41、OD压缩值函数运算单元42及OD压缩值运算还原单元43，比较单元50以及多工比较单元60。Please refer to Fig. 1, the color display system 1 of the present invention includes: a picturetemporary storage unit 10, which is used to temporarily store the brightness gray scale value of the previous picture frame of the color display system 1, and acolor signal source 20, which is used to input Color signal: thestorage unit 30 is used to store the OD compressed value tables P, Q, R and S, and the OD valueoperation restoration module 40 includes the OD compressedvalue selection unit 41, the OD compressed valuefunction operation unit 42 and the OD compressed valueOperation reduction unit 43 ,comparison unit 50 andmultiplex comparison unit 60 .

如第2图所示，当显示一红色彩讯号于色彩显示系统1时，其处理步骤包括：As shown in Figure 2, when a red color signal is displayed in the color display system 1, the processing steps include:

(1)分别由画面暂存单元10及色彩讯号源20输入前一图框亮度灰阶值以及现在图框亮度灰阶值至OD值运算还原模块40以及比较单元50；(1) Input the grayscale value of the brightness of the previous picture frame and the grayscale value of the brightness of the current picture frame from the picturetemporary storage unit 10 and thecolor signal source 20 respectively to the OD valueoperation reduction module 40 and thecomparison unit 50;

(2)OD压缩值选取单元41以上述现在图框亮度灰阶值以及前一图框亮度灰阶值选取储存单元30所储存的OD压缩值表P、Q、R及S中的特定值而得亮度灰阶值函数g₁(y)、g₂(y)、h₁(x)及h₂(x)，该亮度灰阶值函数g₁(y)、g₂(y)、h₁(x)及h₂(x)经由OD压缩值函数运算单元42运算求得亮度灰阶值函数g(y)及h(x)，所求得的亮度灰阶值函数g(y)及h(x)经由OD压缩值运算还原单元43以函数f(x，y)＝c×h(x)×g(y)运算而得一OD运算还原值；(2) The OD compressionvalue selection unit 41 selects specific values in the OD compression value tables P, Q, R, and S stored in thestorage unit 30 based on the above-mentioned current frame brightness gray scale value and the previous frame brightness gray scale value. The brightness grayscale value functions g₁ (y), g₂ (y), h₁ (x) and h₂ (x) are obtained. The brightness grayscale value functions g₁ (y), g₂ (y), h₁ (x) and h₂ (x) are computed by the OD compressed valuefunction operation unit 42 to obtain brightness grayscale value functions g(y) and h(x), and the obtained brightness grayscale value functions g(y) and h (x) obtain an OD operation restoration value through the operation of the OD compressed valueoperation reduction unit 43 with the function f(x, y)=c*h(x)*g(y);

(3)比较单元50比较上述现在图框亮度灰阶值以及前一图框输出亮度灰阶值，若该前一图框亮度灰阶值已达到现在图框亮度灰阶值或两者差异为某一误差范围内，则输出一免用OD讯息；以及(3) Thecomparison unit 50 compares the brightness gray scale value of the current picture frame with the output gray scale value of the previous picture frame, if the gray scale value of the previous picture frame brightness has reached the gray scale value of the current picture frame brightness or the difference between the two Within a certain error range, output a free OD message; and

(4)多工比较单元60同时输入上述OD运算还原值、上述现在图框亮度灰阶值及上述免用OD讯息，若多工比较单元60接收到上述免用OD讯息，则输出上述现在图框亮度灰阶值，而若多工比较单元60未接收到上述免用OD讯息，则输出上述OD运算还原值；(4) Themultiplexing comparison unit 60 simultaneously inputs the above-mentioned OD calculation restoration value, the above-mentioned current frame brightness gray scale value and the above-mentioned exempt OD message, if themultiplex comparison unit 60 receives the above-mentioned exempt OD message, then outputs the above-mentioned current image frame brightness grayscale value, and if themultiplexing comparison unit 60 does not receive the above-mentioned exempt OD message, then output the above-mentioned OD operation restoration value;

该多工比较单元所输出的OD运算还原值是输出于液晶面板、驱动器或时序控制器T-con(Timing controller)。藉此，可使色彩显示系统1快速且精确地反应色彩亮度灰阶。The OD calculation restoration value output by the multiplex comparison unit is output to the liquid crystal panel, driver or timing controller T-con (Timing controller). In this way, the color display system 1 can quickly and accurately reflect the gray scale of color brightness.

本发明的第二实施例是如图3所示，色彩显示系统1除了上述图1所包括的元件之外，OD值运算还原模块40另包括温度补偿单元44，而于储存单元30中并储存有不同温度的OD压缩值表P₁-P_N、Q₁-Q_N、R₁-R_N及S₁-S_N，N值是为不同温度OD压缩值表的总数值。The second embodiment of the present invention is as shown in FIG. 3. In addition to the elements included in the above-mentioned FIG. There are OD compression value tables P₁ -P_N , Q₁ -Q_N , R₁ -R_N and S₁ -S_N at different temperatures, and the N value is the total value of the OD compression value table at different temperatures.

请参阅图4，色彩显示系统1是处于温带国家，当欲显示蓝色于色彩显示系统1时，其处理步骤包括：Please refer to Fig. 4, the color display system 1 is in a temperate country, when it is desired to display blue color in the color display system 1, the processing steps include:

(1)分别由画面暂存单元10及色彩讯号源20输入前一图框亮度灰阶值以及现在图框亮度灰阶值至OD值运算还原模块40以及比较单元50；(1) Input the grayscale value of the brightness of the previous picture frame and the grayscale value of the brightness of the current picture frame from the picturetemporary storage unit 10 and thecolor signal source 20 respectively to the OD valueoperation reduction module 40 and thecomparison unit 50;

(2)温度补偿单元44依不同温度需求而由上述储存单元30中的OD压缩值表P₁-P_N、Q₁-Q_N、R₁-R_N及S₁-S_N载入特定温度的OD压缩值表P₂、Q₂、R₂及S₂；(2) Thetemperature compensation unit 44 loads specific temperatures from the OD compression value tables P₁ -P_N , Q₁ -Q_N , R₁ -R_N and S₁ -S_N in thestorage unit 30 according to different temperature requirements OD compression value table P₂ , Q₂ , R₂ and S₂ ;

(3)OD压缩值选取单元41以上述现在图框亮度灰阶值以及前一图框亮度灰阶值选取温度补偿单元44所补偿的上述特定温度的OD压缩值表P₂、Q₂、R₂及S₂而得亮度灰阶值函数g₁(y)、g₂(y)、h₁(x)及h₂(x)，该亮度灰阶值函数g₁(y)、g₂(y)、h₁(x)及h₂(x)经由OD压缩值函数运算单元42运算求得亮度灰阶值函数g(y)及h(x)，所求得的亮度灰阶值函数g(y)及h(x)经由OD压缩值运算还原单元43以函数f(x，y)＝c×h(x)×g(y)运算而得一OD运算还原值；(3) The OD compressionvalue selection unit 41 selects the OD compression value tables P₂ , Q₂ , R of the above-mentioned specific temperature compensated by thetemperature compensation unit 44 based on the brightness gray scale value of the current picture frame and the gray scale value of the previous picture frame.₂ and S₂ to obtain the brightness grayscale value functions g₁ (y), g₂ (y), h₁ (x) and h₂ (x), the brightness grayscale value functions g₁ (y), g₂ ( y), h₁ (x) and h₂ (x) are computed by the OD compressed valuefunction operation unit 42 to obtain brightness gray scale value functions g(y) and h(x), and the obtained brightness gray scale value function g (y) and h(x) are calculated by the OD compressed valueoperation restoration unit 43 with the function f(x, y)=c*h(x)*g(y) to obtain an OD operation restoration value;

(4)比较单元50比较上述现在图框亮度灰阶值以及前一图框输出亮度灰阶值，若该前一图框亮度灰阶值已达到现在图框亮度灰阶值或两者差异为某一误差范围内，如：差异在五个亮度灰阶值内，则输出一免用OD讯息；以及(4) Thecomparison unit 50 compares the brightness gray scale value of the above-mentioned current picture frame with the output brightness gray scale value of the previous picture frame. Within a certain error range, such as: the difference is within five brightness grayscale values, then output an OD-free message; and

(5)多工比较单元60同时输入上述OD运算还原值、上述现在图框亮度灰阶值及上述免用OD讯息，若多工比较单元60接收到上述免用OD讯息，则输出上述现在图框亮度灰阶值，而若多工比较单元60未接收到上述免用OD讯息，则输出上述OD运算还原值；(5) Themultiplexing comparison unit 60 simultaneously inputs the above-mentioned OD calculation restoration value, the above-mentioned current frame brightness gray scale value and the above-mentioned exempt OD message, if themultiplex comparison unit 60 receives the above-mentioned exempt OD message, then outputs the above-mentioned current image frame brightness grayscale value, and if themultiplexing comparison unit 60 does not receive the above-mentioned exempt OD message, then output the above-mentioned OD operation restoration value;

藉此，可提供作业色彩显示系统1依不同地域、纬度或作业空间的环境需求而快速且精确地反应色彩亮度灰阶，表现出最佳的液晶屏幕亮度及色彩效果。In this way, the working color display system 1 can quickly and accurately respond to the gray scale of color brightness according to the environmental requirements of different regions, latitudes or working spaces, and exhibit the best brightness and color effects of the LCD screen.

本发明是藉由比对目标亮度灰阶值(现在图框亮度灰阶值)、OD运算还原值及原本亮度灰阶值(前一图框亮度灰阶值)与目标亮度灰阶值(现在图框亮度灰阶值)的比较结果讯息，而可快速取用合适的OD运算还原值或直接输出目标亮度灰阶值，因此，本发明具有以下的优点：The present invention compares the target brightness gray scale value (the current frame brightness gray scale value), the OD operation restoration value, the original brightness gray scale value (the previous frame brightness gray scale value) and the target brightness gray scale value (the current frame brightness gray scale value). box brightness grayscale value) comparison result information, and can quickly access the appropriate OD calculation restoration value or directly output the target brightness grayscale value, therefore, the present invention has the following advantages:

1、加快反应速度、减少反应时间：本发明的OD运算还原值是由OD压缩值计算得的，而该OD压缩值则是由OD量测值压缩所得，故本发明可以函数运算方式还原极近似于实际OD值，不需查对实际OD值，加快反应速度、减少反应时间。1. Accelerate the reaction speed and reduce the reaction time: the OD calculation reduction value of the present invention is calculated by the OD compression value, and the OD compression value is obtained by compressing the OD measurement value, so the present invention can restore the pole by function operation Approximate to the actual OD value, no need to check the actual OD value, speed up the reaction speed and reduce the reaction time.

2、精确表现所需求的OD值：本发明的OD运算还原值是由OD压缩值计算得的，而该OD压缩值则是由OD量测值压缩所得，故本发明以函数运算方式还原所得的OD运算还原值极近似于实际OD值，精确表现所需求的OD值。2. Accurately express the required OD value: the OD calculation restoration value of the present invention is calculated from the OD compression value, and the OD compression value is obtained from the compression of the OD measurement value, so the present invention restores the obtained value by function operation The restored value of the OD operation is very similar to the actual OD value, and accurately represents the required OD value.

3、节省硬件资源：本发明的OD压缩值所需储存空间远较OD量测值为小，因此可节省硬件资源。3. Saving of hardware resources: the storage space required by the OD compression value of the present invention is much smaller than that of the OD measurement value, so hardware resources can be saved.

4、可针对不同作业环境温度，而提供液晶分子合适的OD值：因本发明的OD压缩值所需储存空间远较OD量测值为小，故可于现行记忆体中储存不同作业环境温度的OD压缩值表，可适合不同地域、纬度或作业空间所需，以表现出最佳的液晶屏幕亮度及色彩效果。4. A suitable OD value for liquid crystal molecules can be provided for different operating environment temperatures: because the storage space required for the OD compression value of the present invention is much smaller than the OD measurement value, it can store different operating environment temperatures in the current memory The OD compression value table is suitable for different regions, latitudes or work spaces, so as to show the best LCD screen brightness and color effects.

以上仅用以揭示本发明可实施的部份态样，当不能用以限定本发明的范围。凡习于本业的人士所明显可作变化与应用实施者，皆应视为不悖离本发明的实质内容。The above is only used to reveal some aspects of the present invention that can be implemented, and should not be used to limit the scope of the present invention. All changes and applications that are obvious to those skilled in the art should be considered as not departing from the essence of the present invention.

综上所述，依上文所揭示的内容，针对本发明的预期目的，提供了一种藉由比较前一图框亮度灰阶值与现在图框亮度灰阶值的差异，决定是否取用由函数运算所得的OD值而可快速且精确地反应色彩亮度灰阶的色彩显示系统，因此依法提出发明专利申请。To sum up, according to the content disclosed above, aiming at the intended purpose of the present invention, a method is provided to determine whether to use The OD value obtained by the function operation can quickly and accurately reflect the color display system of the gray scale of the color brightness, so the application for the invention patent is filed according to the law.

Claims (6)

Translated fromChinese

1.一种色彩显示系统，其特征在于包括：1. A color display system, characterized in that it comprises:一色彩讯号源，是用以输入色彩讯号；a color signal source for inputting color signals;一画面暂存单元，是用以暂存色彩显示系统的前一图框亮度灰阶值；A picture temporary storage unit is used to temporarily store the brightness grayscale value of the previous picture frame of the color display system;一储存单元，是用以储存加速驱动电压压缩值表P、Q、R及S；A storage unit is used for storing acceleration driving voltage compression value tables P, Q, R and S;一OD值运算还原模块，是包括一OD压缩值选取单元、一OD压缩值函数运算单元及一OD压缩值运算还原单元；An OD value operation restoration module includes an OD compression value selection unit, an OD compression value function operation unit and an OD compression value operation restoration unit;一比较单元；以及a comparison unit; and一多工比较单元；a multiplex comparison unit;其处理步骤包括：Its processing steps include:(1)由该画面暂存单元及该色彩讯号源输入前一图框亮度灰阶值以及现在图框亮度灰阶值至该OD值运算还原模块以及该比较单元，该现在图框是为该前一图框的下一时间点；(1) Input the brightness gray scale value of the previous picture frame and the gray scale value of the current picture frame brightness from the picture temporary storage unit and the color signal source to the OD value calculation restoration module and the comparison unit, the current picture frame is for the The next time point of the previous frame;(2)该OD压缩值选取单元以上述现在图框亮度灰阶值以及前一图框亮度灰阶值选取该储存单元所储存的OD压缩值表P、Q、R及S中的特定值而得亮度灰阶值函数g₁(y)、g₂(y)、h₁(x)及h₂(x)，该亮度灰阶值函数g₁(y)、g₂(y)、h₁(x)及h₂(x)经由该OD压缩值函数运算单元运算求得亮度灰阶值函数g(y)及h(x)，所求得的亮度灰阶值函数g(y)及h(x)经由该OD压缩值运算还原单元以函数f(x，y)＝c×h(x)×g(y)运算而得一OD运算还原值；(2) The OD compression value selection unit selects specific values in the OD compression value tables P, Q, R, and S stored in the storage unit by using the above-mentioned current picture frame brightness gray scale value and the previous picture frame brightness gray scale value. The brightness grayscale value functions g₁ (y), g₂ (y), h₁ (x) and h₂ (x) are obtained. The brightness grayscale value functions g₁ (y), g₂ (y), h₁ (x) and h₂ (x) are computed by the OD compressed value function operation unit to obtain brightness grayscale value functions g(y) and h(x), and the obtained brightness grayscale value functions g(y) and h (x) through the OD compressed value operation restoration unit, the function f(x, y)=c×h(x)×g(y) is operated to obtain an OD operation restoration value;(3)该比较单元比较上述现在图框亮度灰阶值以及前一图框输出亮度灰阶值，若该前一图框亮度灰阶值已达到现在图框亮度灰阶值或两者差异在某一误差范围内，则输出一免用OD讯息；以及(3) The comparison unit compares the brightness gray scale value of the current picture frame with the gray scale value of the output brightness of the previous picture frame. Within a certain error range, output a free OD message; and(4)该多工比较单元同时输入上述OD运算还原值、上述现在图框亮度灰阶值及上述免用OD讯息，若该多工比较单元接收到上述免用OD讯息，则输出上述现在图框亮度灰阶值，而若该多工比较单元未接收到上述免用OD讯息，则输出上述OD运算还原值；(4) The multiplexing comparison unit simultaneously inputs the above-mentioned OD operation reduction value, the brightness gray scale value of the above-mentioned current picture frame and the above-mentioned exempt OD message, if the multiplex comparison unit receives the above-mentioned exempt OD message, then outputs the above-mentioned current image frame brightness grayscale value, and if the multiplexing comparison unit does not receive the above-mentioned OD-free message, then output the above-mentioned OD operation restoration value;藉此，可使该色彩显示系统快速且精确地反应色彩亮度灰阶。In this way, the color display system can quickly and accurately respond to the gray scale of color brightness.2.如上述权利要求1所述的色彩显示系统，其特征在于：该储存单元所储存的OD压缩值表P、Q、R及S是依不同温度而具有不同温度的OD压缩值表P₁-P_N、Q₁-Q_N、R₁-R_N及S₁-S_N，N值是为不同温度OD压缩值表的总数值，且该OD值运算还原模块另具有一温度补偿单元，可依不同温度需求而由上述的OD压缩值表P₁-P_N、Q₁-Q_N、R₁-R_N及S₁-S_N载入特定温度的OD压缩值表，再输入该OD压缩值选取单元。2. The color display system according to claim 1, wherein the OD compression value tables P, Q, R, and S stored in the storage unit are OD compression value tables_P1 with different temperatures according to different temperatures. -P_N , Q₁ -Q_N , R₁ -R_N and S₁ -S_N , the N value is the total value of the OD compression value table at different temperatures, and the OD value calculation and restoration module also has a temperature compensation unit, According to different temperature requirements, the above-mentioned OD compression value table P₁ -P_N , Q₁ -Q_N , R₁ -R_N and S₁ -S_N can be loaded into the OD compression value table of a specific temperature, and then input the OD Compression value selection unit.3.如上述权利要求1所述的色彩显示系统，其特征在于：该函数f(x，y)＝c×h(x)×g(y)是为多项式、双线性或正交函数。3. The color display system according to claim 1, wherein the function f(x, y)=c×h(x)×g(y) is a polynomial, bilinear or orthogonal function.4.如上述权利要求1所述的色彩显示系统，其特征在于：该色彩讯号是为红光、蓝光或绿光的色彩讯号，且该红光、蓝光或绿光的色彩讯号是分别为8位元讯号。4. The color display system according to claim 1, wherein the color signal is a color signal of red light, blue light or green light, and the color signals of red light, blue light or green light are 8 bit signal.5.如上述权利要求1所述的色彩显示系统，其特征在于：该多工比较单元所输出的OD运算还原值是输出于液晶面板、驱动器或时序控制器T-con。5 . The color display system according to claim 1 , wherein the OD operation restoration value output by the multiplexing comparison unit is output to a liquid crystal panel, a driver or a timing controller T-con.6.如上述权利要求1所述的色彩显示系统，其特征在于：是指液晶屏幕、电浆电视、主动式矩阵显示器或OLED、PLED有机电激发光显示器。6. The color display system according to claim 1, characterized in that it refers to liquid crystal screen, plasma TV, active matrix display or OLED, PLED organic electroluminescence display.

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