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    • 3. 发明授权
    • Method of displaying gray scale in plasma display panel
    • 在等离子体显示面板上显示灰度的方法
    • US07397445B2
    • 2008-07-08
    • US11022806
    • 2004-12-28
    • Seung Chan Baek
    • Seung Chan Baek
    • G09G3/28
    • G09G3/2022G09G3/2059G09G3/28G09G2320/0266G09G2320/0276G09G2320/0285
    • The present invention relates to a plasma display panel, and more particularly, to a method of displaying the gray scale in a plasma display panel. According to the present invention, a method of displaying gray scales in a plasma display panel having an inverse gamma correction unit that operates using gamma tables includes the steps of allowing the inverse gamma correction unit to match picture signals, which corresponds to an n number of frames (n is a natural number) respectively, to an n number of previously stored gamma tables, allowing the inverse gamma correction unit to perform an inverse gamma process on the picture signals received according to the matched gamma tables to produce real gray scales every frame, and allowing the inverse gamma correction unit to divide the real gray scales every frame by n and then to produce last real gray scales. More fine gray scales can be represented by extending the number of real gray scales. It is thus possible to remove noise and provide a much smooth image.
    • 等离子体显示面板技术领域本发明涉及等离子体显示面板,更具体地,涉及在等离子体显示面板中显示灰度的方法。 根据本发明,在具有使用伽马表进行操作的反伽马校正单元的等离子体显示面板中显示灰度的方法包括以下步骤:允许反伽马校正单元匹配图像信号,其对应于n个 帧(n是自然数)分配给n个先前存储的伽马表,允许反伽马校正单元对根据匹配的伽马表接收的图像信号执行反伽马处理,以产生每帧的真实灰度 ,并且允许反伽马校正单元将每个帧的真实灰度除以n,然后产生最后的真实灰度。 可以通过扩展真实​​灰度级数来表示更精细的灰度级。 因此,可以消除噪音并提供更平滑的图像。
    • 10. 发明授权
    • Plasma display apparatus and image processing method thereof
    • 等离子显示装置及其图像处理方法
    • US07649510B2
    • 2010-01-19
    • US11176236
    • 2005-07-08
    • Seung Chan Baek
    • Seung Chan 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。