公开(公告)号：US07375854B2

公开(公告)日：2008-05-20

申请号：US10798867

申请日：2004-03-12

申请人： Ching-Hsiang Hsu ,  Yuh-Ren Shen ,  Ling-Chih Lu

发明人： Ching-Hsiang Hsu ,  Yuh-Ren Shen ,  Ling-Chih Lu

IPC分类号： G06F15/00 ,  G03F3/08 ,  G06K9/00

CPC分类号： H04N9/69 ,  H04N5/202

摘要： A method for color correction is provided. In this method, a plurality of groups of gray levels and luminance of light source of display device are respectively selected by color measurement system. The selected data of each color light are respectively calculated to obtain fitting functions which can fit the gray level data of each interval. The fitting luminance of the gray levels in interval is obtained by the fitting function and formed into a lookup table. Then in order to correspond a gamma curve of normalized gray data of image to a predetermined target curve, the two gamma curves are first taken to logarithmic calculation and the modified gray signals are obtained from the lookup table, then the modified gray signals are transmitted out for providing the display device to express the gray distribution state. The method for color correction is applicable to various display devices, especially liquid crystal display device.

摘要翻译： 提供了一种用于颜色校正的方法。 在该方法中，通过彩色测量系统分别选择多组灰度级和显示装置的光源亮度。 分别计算每个颜色光的所选数据，以获得可以适合每个间隔的灰度级数据的拟合函数。 通过拟合函数获得间隔中灰度级的拟合亮度，形成查找表。 然后，为了将图像的归一化灰度数据的伽马曲线对应于预定的目标曲线，首先将两个伽马曲线进行对数计算，并从查找表中获得修改的灰度信号，然后将修改的灰度信号发送出去 用于提供显示装置来表达灰色分布状态。 用于颜色校正的方法适用于各种显示装置，特别是液晶显示装置。

公开(公告)号：US20050201615A1

公开(公告)日：2005-09-15

申请号：US10798867

申请日：2004-03-12

申请人： Ching-Hsiang Hsu ,  Yuh-Ren Shen ,  Ling-Chih Lu

发明人： Ching-Hsiang Hsu ,  Yuh-Ren Shen ,  Ling-Chih Lu

IPC分类号： G06K1/00 ,  G06K9/00

CPC分类号： H04N9/69 ,  H04N5/202

摘要： A method for color correction is provided. In this method, a plurality of groups of gray levels and luminance of light source of display device are respectively selected by color measurement system. The selected data of each color light are respectively calculated to obtain fitting functions which can fit the gray level data of each interval. The fitting luminance of the gray levels in interval is obtained by the fitting function and formed into a lookup table. Then in order to correspond a gamma curve of normalized gray data of image to a predetermined target curve, the two gamma curves are first taken to logarithmic calculation and the modified gray signals are obtained from the lookup table, then the modified gray signals are transmitted out for providing the display device to express the gray distribution state. The method for color correction is applicable to various display devices, especially liquid crystal display device.

摘要翻译： 提供了一种用于颜色校正的方法。 在该方法中，通过彩色测量系统分别选择多组灰度级和显示装置的光源亮度。 分别计算每个颜色光的所选数据，以获得可以适合每个间隔的灰度级数据的拟合函数。 通过拟合函数获得间隔中灰度级的拟合亮度，形成查找表。 然后，为了将图像的归一化灰度数据的伽马曲线对应于预定的目标曲线，首先将两个伽马曲线进行对数计算，并从查找表中获得修改的灰度信号，然后将修改的灰度信号发送出去 用于提供显示装置来表达灰色分布状态。 用于颜色校正的方法适用于各种显示装置，特别是液晶显示装置。

公开(公告)号：US20080297497A1

公开(公告)日：2008-12-04

申请号：US11756878

申请日：2007-06-01

申请人： Ling-Chih Lu ,  Ching-Hsiang Hsu

发明人： Ling-Chih Lu ,  Ching-Hsiang Hsu

IPC分类号： G09G5/00

CPC分类号： G09G3/3648 ,  G09G2320/0252 ,  G09G2320/041 ,  G09G2340/16

摘要： A control circuit of a liquid crystal display (LCD) panel and a method thereof are provided. The circuit includes a frame memory, a look-up table (LUT) module, and a signal processor. The frame memory provides a previous value of a pixel, and the previous value includes at least one bit of a previous frame data of the pixel. The LUT module provides a plurality of basic values according to the previous value and a current value of the pixel, and the current value includes at least one bit of a current frame data of the pixel. The signal processor produces a driving value according to the basic values and replaces the current frame data with the driving value.

摘要翻译： 提供液晶显示（LCD）面板的控制电路及其方法。 电路包括帧存储器，查找表（LUT）模块和信号处理器。 帧存储器提供像素的先前值，并且先前值包括像素的先前帧数据的至少一个比特。 LUT模块根据先前的值和像素的当前值提供多个基本值，并且当前值包括像素的当前帧数据的至少一个比特。 信号处理器根据基本值产生驱动值，并用驱动值代替当前帧数据。

公开(公告)号：US20090185742A1

公开(公告)日：2009-07-23

申请号：US12015908

申请日：2008-01-17

申请人： Shih-Chieh Lu ,  Ching-Hsiang Hsu ,  Ling-Chih Lu

发明人： Shih-Chieh Lu ,  Ching-Hsiang Hsu ,  Ling-Chih Lu

IPC分类号： G06K9/40 ,  G06K9/36

CPC分类号： H04N9/646 ,  G06T5/003 ,  G06T5/50 ,  G06T2207/20012 ,  G06T2207/20192 ,  G06T2207/20201 ,  H04N1/58

摘要： In an image compensation method, formats of images are identified based on ambient color quantity information. If the image is in text format or of high contrast, over compensation is barred to avoid edge effect. A compensation coefficient is set basing on edge eigenvalue of images. The compensation value is fine tuned based on a threshold value to obtain finer compensation result.

摘要翻译： 在图像补偿方法中，基于环境颜色数量信息来识别图像的格式。 如果图像为文本格式或高对比度，则过度补偿被禁止以避免边缘效应。 基于图像的边缘特征值设置补偿系数。 基于阈值对补偿值进行微调，以获得更精细的补偿结果。

公开(公告)号：US20090010339A1

公开(公告)日：2009-01-08

申请号：US11773875

申请日：2007-07-05

申请人： Ching-Hsiang Hsu ,  Ling-Chih Lu ,  Shih-Chieh Lu

发明人： Ching-Hsiang Hsu ,  Ling-Chih Lu ,  Shih-Chieh Lu

IPC分类号： H04N7/32

CPC分类号： G09G3/3648 ,  G09G2320/0252 ,  G09G2320/0261 ,  G09G2320/0285 ,  G09G2340/16

摘要： Input image signals are spatially and temporally compensated. First, gray scales of a target pixel in a current frame and in a previous frame are compared to determine whether to spatially and temporally compensate the input image signals or not. Next, in accordance to weight parameters and gray scales of pixels adjacent to the target pixel, the target pixel of the current frame is spatially compensated. Further, based on the gray scale of the target pixel of the previous frame, the target pixel of the current frame after spatial compensation is temporally compensated.

摘要翻译： 输入图像信号在空间和时间上得到补偿。 首先，比较当前帧和先前帧中的目标像素的灰度级，以确定是否对输入图像信号进行空间和时间补偿。 接下来，根据与目标像素相邻的像素的权重参数和灰度级，对当前帧的目标像素进行空间补偿。 此外，基于前一帧的目标像素的灰度级，空间补偿后的当前帧的目标像素被时间上补偿。