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    Method and system for image dithering
    3.
    发明公开
    Method and system for image dithering 审中-公开
    Verfahren und System zum Bild-Dithering

    公开(公告)号：EP2770721A1

    公开(公告)日：2014-08-27

    申请号：EP13186290.6

    申请日：2013-09-27

    申请人： Spreadtrum Communications (Shanghai) Co., Ltd.

    发明人： Luo, Xiaowei ,  Lin, Fuhui

    IPC分类号： H04N1/64 ,  H04N19/90 ,  G09G3/20

    CPC分类号： G09G3/2051 ,  G09G3/2003 ,  G09G2340/0428 ,  G09G2350/00 ,  H04N1/4051 ,  H04N1/64

    摘要： A method of dithering of an image is described. The method includes analyzing each of a plurality of pixels of the image, wherein each pixel of the plurality of pixels exhibits integer value N-bit color depth and determining a particular index value of each pixel of the image, a particular numerical value associated with a particular color component of each pixel of the image, and a particular threshold value associated with the particular color component of each pixel of the image. The particular threshold value is common between pixels of the image separated by a predetermined number of pixels. The method further includes modifying, based on the determining, each of the plurality of pixels of the image to exhibit integer value M-bit color depth, wherein integer value M is less than integer value N.

    摘要翻译： 描述图像抖动的方法。 该方法包括分析图像的多个像素中的每一个，其中多个像素中的每个像素呈现整数值N位颜色深度并确定图像的每个像素的特定索引值，与 图像的每个像素的特定颜色分量以及与图像的每个像素的特定颜色分量相关联的特定阈值。 特定阈值在由预定数量的像素分隔的图像的像素之间是共同的。 所述方法还包括基于所述图像的所述多个像素中的每一个来修改所述图像的整数值M位颜色深度，其中整数值M小于整数值N.

    IMAGE DISPLAY DEVICE AND IMAGE DISPLAY METHOD
    4.
    发明公开
    IMAGE DISPLAY DEVICE AND IMAGE DISPLAY METHOD 审中-公开
    图像显示装置和图像显示方法

    公开(公告)号：EP2525344A1

    公开(公告)日：2012-11-21

    申请号：EP11747337.1

    申请日：2011-02-22

    申请人： Sharp Kabushiki Kaisha

    发明人： NAKAGAWA, Shinji ,  FURUKAWA, Hiroyuki ,  YOSHIYAMA, Kazuyoshi ,  KONDOH, Naoko

    IPC分类号： G09G3/20 ,  G09G3/36 ,  H04N1/405 ,  H04N1/46 ,  H04N9/30

    CPC分类号： H04N1/52 ,  G09G3/2051 ,  G09G3/3607 ,  G09G2300/0452 ,  H04N1/4055

    摘要： Provided is an image display device having pixels each of which includes sub-pixels of four or more colors and requires fewer dither matrices. This image display device includes a display section in which color filters of sub-pixel colors that are M colors in total including three principal colors of red, green, and blue, as well as at least one color other than the three principal colors are arranged regularly and a gray-scale processing section (50) that performs gray-scale processing by a dither method with respect to an input image signal. The M sub-pixel colors are divided into N groups (G 1 to G N ) in such a manner that there is at least one group to which two or more colors belong. The gray-scale processing section (50) includes dither matrix storage ROMs (54 1 to 54 N ) that store N combinations of dither matrices corresponding to the N groups, respectively.

    摘要翻译： 提供了一种图像显示装置，其具有每个包括四种或更多种颜色的子像素并且需要较少的抖动矩阵的像素。 该图像显示设备包括：显示部分，其中排列有总共包括红色，绿色和蓝色三种主色以及除三种主要颜色以外的至少一种颜色的M种颜色的子像素颜色的滤色器 以及对输入图像信号进行抖动处理的灰度处理的灰度处理部（50）。 M个子像素颜色以这样的方式被分成N个组（G1到GN），以至于存在两个或更多个颜色所属的至少一个组。 灰度处理部分（50）包括分别存储对应于N组的抖动矩阵的N个组合的抖动矩阵存储ROM（541至54N）。

    Method and device for encoding luminance values into subfield code words in a display device
    8.
    发明公开
    Method and device for encoding luminance values into subfield code words in a display device 审中-公开
    对于亮度值的编码，以在Teilfeldkodewörter的显示装置的方法和设备

    公开(公告)号：EP1768088A3

    公开(公告)日：2009-05-13

    申请号：EP06120447.5

    申请日：2006-09-11

    申请人： Thomson Licensing

    发明人： Thebault, Cédric ,  Correa, Carlos ,  Weitbruch, Sébastien

    IPC分类号： G09G3/20

    CPC分类号： G09G3/2029 ,  G09G3/2051 ,  G09G3/2077 ,  G09G2320/0233 ,  G09G2320/0266 ,  G09G2320/0673 ,  G09G2360/16

    摘要： The invention relates to a method and a device for encoding the luminance value of a pixel of a picture into a subfield code word in a display device. It can be applied to every display device using a PWM (Pulse Width Modulation) technology and subfields for displaying video picture. It can be used to compensate for any luminance problem that can be estimated. The general idea of the recursive coding is to encode one sub-field after the other in order to be able to compensate for problems occurring on one sub-field with the other sub-fields. More particularly, the bits of a subfield code word are computed recursively one after the other such that the defects (e.g. line load and/or linearity) in the light emission or luminance generated by a bit of the subfield code word can be compensated by the following bits of the subfield code word.

    IMAGE DISPLAY APPARATUS
    10.
    发明公开
    IMAGE DISPLAY APPARATUS 审中-公开
    BILDANZEIGEVORRICHTUNG

    公开(公告)号：EP1583062A4

    公开(公告)日：2008-08-20

    申请号：EP03789637

    申请日：2003-12-26

    申请人： MATSUSHITA ELECTRIC IND CO LTD

    发明人： YAMADA KAZUHIRO ,  KAWAHARA ISAO

    IPC分类号： F01L1/08 ,  F02F1/42 ,  G09G3/20 ,  G09G3/28

    CPC分类号： G09G3/2059 ,  F02B2275/18 ,  G09G3/2029 ,  G09G3/2051 ,  G09G3/2803 ,  G09G2320/0261 ,  G09G2320/0266 ,  G09G2320/103

    摘要： An image display apparatus such as a plasma display panel or the like wherein false contours of moving images can be suppressed with sufficient gray scale maintained. The image display apparatus includes a disturbance constant adding circuit (19) that generates a plurality of disturbance constants for the gray scale corresponding to an image signal and that selects and adds one of those disturbance constants to the image signal. Thus, disturbance is applied to and superimposed on each image signal, thereby scattering locations where false contours of moving images occur so as to make those false contours visually unnoticeable.

    摘要翻译： 诸如等离子体显示面板等的图像显示设备可以在保持足够的灰度级的情况下抑制运动图像的错误轮廓。 该图像显示设备包括干扰常数加法电路（19），其产生对应于图像信号的灰度的多个干扰常数，并且选择这些干扰常数中的一个并将其加到图像信号上。 因此，干扰被施加并叠加在每个图像信号上，由此散射运动图像的假轮廓出现的位置，从而使这些假轮廓在视觉上不明显。