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    • 23. 发明申请
    • Image processing apparatus and method of plasma display panel
    • 等离子显示面板的图像处理装置及方法
    • US20060152441A1
    • 2006-07-13
    • US11319464
    • 2005-12-29
    • Seung Baek
    • Seung Baek
    • G09G3/28
    • G09G3/2059G09G3/2022G09G3/288G09G3/298G09G2320/0247G09G2320/0276
    • This document relates to a display apparatus, and more particularly, to an image processing apparatus and method of a plasma display panel. An image processing apparatus of a plasma display panel according to an embodiment of the present invention comprises an inverse gamma correction unit that gamma-corrects an image signal through pervious stored gamma data, a half-toning unit that adds an error diffusion error value (Ei) of neighboring pixels to a noise value (n(i, j)) of a predetermined pattern and diffuses the added result into the inverse gamma corrected image signal, and a sub-field mapping unit that maps the half-toned image signal to a sub-field mapping table. According to the present invention, in the case where an error diffusion method is used in a plasma display panel screen, a noise value that is repeated every frame is used. It is thus possible to prevent the sizzling of the screen from occurring through a random noise process used to prevent static error diffusion noise.
    • 本文件涉及显示装置,更具体地,涉及等离子体显示面板的图像处理装置和方法。 根据本发明的实施例的等离子体显示面板的图像处理装置包括:反伽马校正单元,其通过可透过存储的伽马数据对图像信号进行伽马校正;加法单元,其将误差扩散误差值(Ei ),将预定图案的噪声值(n(i,j))相邻,并将相加结果扩散到反伽马校正图像信号中,并将该半色调图像信号映射到 子字段映射表。 根据本发明,在等离子体显示面板屏幕中使用误差扩散方法的情况下,使用每帧重复的噪声值。 因此,可以防止通过用于防止静态误差扩散噪声的随机噪声过程发生屏幕的眩晕。
    • 24. 发明申请
    • Plasma display apparatus and image processing method thereof
    • 等离子显示装置及其图像处理方法
    • US20060007067A1
    • 2006-01-12
    • US11176236
    • 2005-07-08
    • Seung Baek
    • Seung Baek
    • G09G3/28
    • G09G3/2059G09G3/2022G09G3/2048G09G3/2051G09G3/2803G09G2320/0233G09G2320/0247G09G2320/0266G09G2320/0606G09G2320/0666
    • The present invention relates to a plasma display apparatus and an image processing method thereof, and more particularly, the present invention relates to an improved plasma display apparatus and an image processing method thereof which can enhance a gray level representation capability. The plasma display apparatus according to one embodiment of the present invention comprises a plasma display panel including a plurality of address electrodes; an inverse gamma correction section for inverse gamma-correcting an image signal inputted from an exterior; a halftone section in which a subordinate bit of a fraction bit of the image signal which is inverse gamma-corrected divides a plurality of pixels adjacent to each other into at least two or more types, an error diffusion is performed among the pixels corresponding to any one type, and a superior bit of the fraction bit performs a dithering using at least two or more dither mask patterns; and a subfield mapping section for mapping the image signal which is halftone processed on the corresponding subfield. The present invention is advantageous in that the flicker phenomenon is suppressed when the plasma display apparatus is operated and a distortion of the embodied image can be prevented.
    • 等离子体显示装置及其图像处理方法技术领域本发明涉及等离子体显示装置及其图像处理方法,更具体地说,本发明涉及一种提高灰度表示能力的等离子体显示装置及其图像处理方法。 根据本发明的一个实施例的等离子体显示装置包括:等离子体显示面板,其包括多个寻址电极; 用于对从外部输入的图像信号进行反伽马校正的反伽马校正部分; 半色调部分,其中反相伽马校正的图像信号的分数位的下位将彼此相邻的多个像素划分为至少两种或更多种类型,在对应于任何像素的像素之间执行误差扩散 一个类型,并且分数比特的优越比特使用至少两个或更多个抖动掩模图案执行抖动; 以及子场映射部分,用于映射在相应子场上进行半色调处理的图像信号。 本发明的优点在于,当等离子体显示装置被操作时可以抑制闪烁现象,并且可以防止体现的图像的变形。