公开(公告)号：US06795063B2

公开(公告)日：2004-09-21

申请号：US09784514

申请日：2001-02-15

申请人： Hiroaki Endo ,  Tetsuji Kikuchi ,  Yoshiki Shirochi

发明人： Hiroaki Endo ,  Tetsuji Kikuchi ,  Yoshiki Shirochi

IPC分类号： G09G500

CPC分类号： H04N9/73

摘要： Image data of the respective colors are converted, by look-up tables in which &ggr; correction data are stored, into gradation data that are white-balanced with intervention of the V-T characteristics of liquid crystal panels. The generated gradation data are supplied to D/A converters and the liquid crystal panels via liquid crystal driving circuits. Gamma correction data within dynamic ranges that are set for each display apparatus by measuring a luminance ratio and contrast ratios of the respective colors are written to the look-up tables in advance. As a result, all they correction data stored in the look-up tables can be used effectively. The invention is directed to such a method for generating data of look-up tables and an image display apparatus that performs gradation correction by using thus-formed look-up tables.

摘要翻译： 各种颜色的图像数据通过存储伽马校正数据的查找表转换为与液晶面板的V-T特性干涉而白平衡的灰度数据。 生成的灰度数据通过液晶驱动电路提供给D / A转换器和液晶面板。 通过测量各种颜色的亮度比和对比度来为每个显示装置设置的动态范围内的伽马校正数据被预先写入查找表。 结果，可以有效地使用存储在查找表中的所有校正数据。 本发明涉及这样一种用于生成查找表的数据的方法以及通过使用这样形成的查找表来执行灰度校正的图像显示装置。