公开(公告)号：US20090009539A1

公开(公告)日：2009-01-08

申请号：US12213549

申请日：2008-06-20

申请人： Ji Young Ahn ,  Dong Woo Kang ,  Choon Woo Kim ,  Qiao Song Chen ,  Yu Hoon Kim

发明人： Ji Young Ahn ,  Dong Woo Kang ,  Choon Woo Kim ,  Qiao Song Chen ,  Yu Hoon Kim

IPC分类号： G09G5/10

CPC分类号： G09G5/02 ,  G09G3/3611 ,  G09G2320/0242 ,  G09G2340/0428 ,  G09G2340/06 ,  H04N1/6058 ,  H04N9/67

摘要： A color gamut mapping method, which is capable of minimizing a color difference perceived by a person, preventing brightness and contrast from deteriorating, and improving color reproducibility, and a liquid crystal display device using the same are disclosed. The color gamut mapping method includes converting image data having an original gamut into lightness, chroma and hue data, adjusting a primary hue angle of the original gamut according to a reproduction gamut and adjusting the hue data according to the adjustment amount of the primary hue angle, changing the lightness of an original gamut boundary in consideration of a reproduction gamut boundary and changing the brightness data by the change amount of the lightness of the original gamut boundary, deciding a focal point, which is a reference point of color gamut mapping, according to the size, the shape and the position of the original/reproduction gamut in lightness and chroma coordinates, deciding a mapping slope according to the decided focal point FP and a mapping area in which the lightness and chroma data are located and mapping the original gamut to the reproduction gamut according to the decided mapping slope, and converting the lightness, chroma and hue data mapped to the reproduction gamut into image data.

摘要翻译： 公开了一种能够使人感觉到的色差最小化，防止亮度和对比度劣化，提高色彩再现性的色域映射方法，以及使用其的液晶显示装置。 色域映射方法包括将具有原始色域的图像数据转换为亮度，色度和色相数据，根据再现色域调整原色域的主色调角度，并根据主色调角度的调整量调整色调数据 考虑到再现色域边界改变原始色域边界的亮度，并根据原始色域边界亮度的变化量改变亮度数据，根据色域映射的参考点确定焦点，根据 根据亮度和色度坐标中的原始/再现色域的大小，形状和位置，根据确定的焦点FP决定映射斜率，并且确定亮度和色度数据所在的映射区域，并将原始色域映射 根据确定的映射斜率到再现色域，并且转换映射到代表的亮度，色度和色调数据 将色域转换为图像数据。

公开(公告)号：US08049765B2

公开(公告)日：2011-11-01

申请号：US12213549

申请日：2008-06-20

申请人： Ji Young Ahn ,  Dong Woo Kang ,  Choon Woo Kim ,  Qiao Song Chen ,  Yu Hoon Kim

发明人： Ji Young Ahn ,  Dong Woo Kang ,  Choon Woo Kim ,  Qiao Song Chen ,  Yu Hoon Kim

IPC分类号： G09G5/02 ,  H04N5/202 ,  H04N17/00 ,  H04N9/64 ,  H04N5/14 ,  G06K9/40 ,  G06K9/00

CPC分类号： G09G5/02 ,  G09G3/3611 ,  G09G2320/0242 ,  G09G2340/0428 ,  G09G2340/06 ,  H04N1/6058 ,  H04N9/67

摘要： A color gamut mapping method, which is capable of minimizing a color difference perceived by a person, preventing brightness and contrast from deteriorating, and improving color reproducibility, and a liquid crystal display device using the same are disclosed. The color gamut mapping method includes converting image data having an original gamut into lightness, chroma and hue data, adjusting a primary hue angle of the original gamut according to a reproduction gamut and adjusting the hue data according to the adjustment amount of the primary hue angle, changing the lightness of an original gamut boundary in consideration of a reproduction gamut boundary and changing the brightness data by the change amount of the lightness of the original gamut boundary, deciding a focal point, which is a reference point of color gamut mapping, according to the size, the shape and the position of the original/reproduction gamut in lightness and chroma coordinates, deciding a mapping slope according to the decided focal point FP and a mapping area in which the lightness and chroma data are located and mapping the original gamut to the reproduction gamut according to the decided mapping slope, and converting the lightness, chroma and hue data mapped to the reproduction gamut into image data.

摘要翻译： 公开了一种能够使人感觉到的色差最小化，防止亮度和对比度劣化，提高色彩再现性的色域映射方法，以及使用其的液晶显示装置。 色域映射方法包括将具有原始色域的图像数据转换为亮度，色度和色相数据，根据再现色域调整原色域的主色调角度，并根据主色调角度的调整量调整色调数据 考虑到再现色域边界改变原始色域边界的亮度，并根据原始色域边界亮度的变化量改变亮度数据，根据色域映射的参考点确定焦点，根据 根据亮度和色度坐标中的原始/再现色域的大小，形状和位置，根据确定的焦点FP决定映射斜率，并且确定亮度和色度数据所在的映射区域，并将原始色域映射 根据确定的映射斜率到再现色域，并且转换映射到代表的亮度，色度和色调数据 将色域转换为图像数据。

公开(公告)号：US20090278768A1

公开(公告)日：2009-11-12

申请号：US12453277

申请日：2009-05-05

申请人： Seung-Ho Park ,  Young-Sun Kim ,  Yu-Hoon Kim ,  Choon-Woo Kim

发明人： Seung-Ho Park ,  Young-Sun Kim ,  Yu-Hoon Kim ,  Choon-Woo Kim

IPC分类号： G09G3/28

CPC分类号： G09G3/2055 ,  G09G3/28 ,  G09G3/2803 ,  G09G2320/0247 ,  G09G2320/0261 ,  G09G2320/0266

摘要： A method and an apparatus for processing video data for display on a plasma display panel include dividing gray level values reverse gamma corrected with respect to input gray level values into an integer portion, an upper decimal fraction portion and a lower decimal fraction portion. The lower decimal fraction is then dithered, a first update value generated according to the lower decimal fraction dithering result is added to the upper decimal fraction portion, and the upper decimal fraction having the first update value added thereto is dithered. Finally, a second update value generated according to the upper decimal fraction dithering result is added to the integer portion.

摘要翻译： 用于处理在等离子体显示面板上显示的视频数据的方法和装置包括将相对于输入灰度值校正的灰度值反分为整数部分，高十进制分数部分和较低小数部分。 然后将较小的小数分数进行抖动，根据较小的小数部分抖动结果生成的第一更新值被添加到上部小数部分，并且具有添加到其中的第一更新值的上级小数部分被抖动。 最后，将根据上级小数部分抖动结果生成的第二更新值加到整数部分。