公开(公告)号：EP3289561A1

公开(公告)日：2018-03-07

申请号：EP16787041.9

申请日：2016-04-27

申请人： E Ink Corporation

发明人： CROUNSE, Kenneth R.

IPC分类号： G06T5/50 ,  G06T11/40 ,  G06T7/40

CPC分类号： G09G3/2055 ,  G09G3/2003 ,  G09G3/344 ,  G09G2320/0209 ,  G09G2320/0285 ,  G09G2340/16

摘要： Methods and apparatus for image processing are provided. A method for image processing includes: (a) accessing, in a lookup table, a current pattern index for a current pixel based on a current pixel input value and a previous pattern index; (b) accessing, in a dither mask array, a threshold value for the current pixel based on a location of the current pixel; (c) comparing the current pattern index with the threshold value; (d) determining a current pixel output value for activation of the current pixel based on a result of the comparing; (e) storing the current pattern index to serve as the previous pattern index for a next image; and (f) repeating acts (a)-(e) for each pixel in the image.

公开(公告)号：EP2466575A2

公开(公告)日：2012-06-20

申请号：EP11192268.8

申请日：2011-12-07

申请人： Apple Inc.

发明人： Barnhoefer, Ulrich T.

IPC分类号： G09G3/20 ,  G06T11/00 ,  H04N1/40 ,  H04N1/60

CPC分类号： G06T11/001 ,  G09G3/2003 ,  G09G3/2055 ,  G09G3/2074 ,  G09G5/02 ,  G09G2320/0242 ,  G09G2340/0414 ,  G09G2340/0421 ,  G09G2340/0428 ,  G09G2360/16 ,  H04N1/52

摘要： Systems and methods are disclosed to enable the creation and the display of spatio-temporal dithered images. Embodiments include techniques that use color-shifting and luminance. In one embodiment, adjacent pixels (52, 54, 56, 58) are color-shifted with respect to each other and the color values of the adjacent pixels (52, 54, 56, 58) are temporally alternated with color values of pixels in the group. In another embodiment, the luminance of group (84) of adjacent pixels is determined and the luminance of the group (84) is made more homogenous spatially and temporally by distributing color variations over a larger number of pixels so as to reduce the luminance difference between the pixel with the least luminance and the pixel with the greatest luminance. Individual color components (e.g., red, green, blue) may also be separated and used so that the color-shifts associated with each color component may be simultaneously present in different pixels.

摘要翻译： 公开了系统和方法，以便能够创建和显示时空抖动图像。 实施例包括使用色彩偏移和亮度的技术。 在一个实施例中，相邻像素（52,54,56,58）相对于彼此进行颜色偏移，并且相邻像素（52,54,56,58）的颜色值在时间上与 群组。 在另一个实施例中，确定相邻像素组（84）的亮度，并通过在较大数量的像素上分布颜色变化来使组（84）的亮度在空间和时间上更均匀，以便降低亮度差 具有最小亮度的像素和具有最大亮度的像素。 单独的颜色分量（例如，红色，绿色，蓝色）也可以被分离和使用，使得与每个颜色分量相关联的颜色偏移可以同时存在于不同的像素中。

公开(公告)号：EP2113901A2

公开(公告)日：2009-11-04

申请号：EP09251214.4

申请日：2009-04-29

申请人： Samsung Mobile Display Co., Ltd.

发明人： Kim, Gun-Shik ,  Kim, Jae-shin ,  Oh, Jun-Sik

IPC分类号： G09G3/20 ,  G09G3/32

CPC分类号： G09G3/2055 ,  G09G3/2022 ,  G09G3/3208 ,  G09G3/3225 ,  G09G3/3611 ,  G09G2320/0266

摘要： A flat panel display, which can allow various types of dither masks to be applied, and a driving method thereof are disclosed. The flat panel display includes a look-up table (LUT) storing one dither mask, which is used to algorithmically generate additional dither masks. The dither masks are applied to image data to improve image quality.

摘要翻译： 公开了一种可以允许应用各种类型的抖动掩模的平板显示器及其驱动方法。 平板显示器包括存储一个抖动掩码的查找表（LUT），其用于在算法上生成附加的抖动掩码。 抖动掩码应用于图像数据以提高图像质量。

公开(公告)号：EP2105913A2

公开(公告)日：2009-09-30

申请号：EP09250853.0

申请日：2009-03-25

申请人： Samsung SDI Co., Ltd.

发明人： Park, Seung-Ho

IPC分类号： G09G3/288

CPC分类号： G09G3/2037 ,  G09G3/204 ,  G09G3/2055 ,  G09G3/288 ,  G09G2320/0247 ,  G09G2320/0271 ,  G09G2340/0435

摘要： Method and apparatus for driving a plasma display device to improve a gradation display during the plasma display device is driven at a relatively high frame frequency. The driving method includes separating a unit frame of an input image signal into first and second subfield groups; and deciding a gradation of each of the subfield groups to display the gradation in a first frame frequency when a minimum gradation level of the first or second subfield group is equal to or below a first reference level, and to display the gradation in a second frame frequency when the minimum gradation level exceeds the first reference level.

摘要翻译： 用于驱动等离子体显示装置以改善等离子体显示装置期间的灰度显示的方法和装置以相对高的帧频率被驱动。 驱动方法包括将输入图像信号的单位帧分离成第一和第二子场组; 以及当所述第一或第二子场组的最小灰度级别等于或低于第一参考水平时，确定每个所述子场组的灰度以在第一帧频中显示所述灰度，并且将所述灰度显示在第二帧中 当最小灰度级超过第一参考水平时的频率。

公开(公告)号：EP1696407A4

公开(公告)日：2008-06-04

申请号：EP03782952

申请日：2003-12-26

申请人： MATSUSHITA ELECTRIC IND CO LTD

发明人： YAMADA KAZUHIRO

IPC分类号： G09G3/20 ,  H04N5/21

CPC分类号： G09G3/2066 ,  G09G3/2029 ,  G09G3/2051 ,  G09G3/2055 ,  G09G3/2059 ,  G09G3/2077 ,  G09G2320/0261 ,  G09G2320/0266 ,  G09G2320/103

摘要： An image displaying method and an image display in which pseudo-profile of a moving image can be reduced while sustaining gradation even at a position where pseudo-profile of a moving image is significant. In the image displaying method and image display, gray level of a pixel is displayed while being converted into a display gray level in the case of a nonobjective pixel. In the case of an objective pixel, it is converted into a first gray level, i.e. an average value of n (an integer of 2 or above) gray levels selected from among the display gray levels. Pseudo-profile of a moving image is reduced while sustaining gradation by performing first diffusion process of averaging the first gray levels spatially and/or temporally using the n gray levels.

公开(公告)号：EP1496493A3

公开(公告)日：2008-04-02

申请号：EP04014740.7

申请日：2004-06-23

申请人： Pioneer Corporation

发明人： Suzuki, Masahiro Pioneer Corporation ,  Shigeta, Tetsuya Pioneer Corporation ,  Honda, Hirofumi Pioneer Ohmori Plant ,  Nagakubo, Tetsuo Pioneer Ohmori Plant

IPC分类号： G09G3/28

CPC分类号： G09G3/2935 ,  G09G3/2029 ,  G09G3/2037 ,  G09G3/204 ,  G09G3/2055 ,  G09G3/2077 ,  G09G3/2927 ,  G09G3/2932 ,  G09G2310/0218 ,  G09G2320/0247

摘要： A display panel includes a number of display lines. These display lines are divided into a plurality of adjacent display line groups. Pixel cells arranged on the respective display lines in each display line group are made to emit light continuously over different light emission periods based on weighting values allocated to the display lines for each field display period. The light emission operation spanning these light emission periods is divided into a first-half period and second-half period of the field display period. A favorable image display in which flicker and dither patterns are suppressed is feasible.

公开(公告)号：EP1581922B1

公开(公告)日：2008-03-26

申请号：EP03808307.7

申请日：2003-12-18

申请人： Thomson Licensing

发明人： THEBAULT, Cédric ,  CORREA, Carlos ,  WEITBRUCH, Sébastien

IPC分类号： G09G3/28 ,  G09G3/20

CPC分类号： G09G3/2048 ,  G09G3/2022 ,  G09G3/2055 ,  G09G3/2803 ,  G09G2320/0266

摘要： The visible pattern of classical matrix dithering in case of applications with moving pictures and static pictures shall be suppressed more effectively. Therefore, it is proposed to change a dithering pattern in the dithering block (12) non-periodically. This can be effected by a random generator (13) which may be activated by a motion detector (14). The motion detector (14) enables to individually alternate the dithering function depending on moving or static pictures.

公开(公告)号：EP1450337A3

公开(公告)日：2008-03-26

申请号：EP04003062.9

申请日：2004-02-11

申请人： Pioneer Corporation

发明人： Honda, Hirofumi, c/o Pioneer Corporation ,  Shigeta, Tetsuya, c/o Pioneer Corporation ,  Nagakubo, Tetsuro, c/o Pioneer Corporation

IPC分类号： G09G3/28

CPC分类号： G09G3/204 ,  G09G3/2025 ,  G09G3/2055 ,  G09G3/2059 ,  G09G3/2077 ,  G09G3/2927 ,  G09G3/293 ,  G09G3/2932 ,  G09G3/2935 ,  G09G3/2937 ,  G09G3/2946 ,  G09G2310/0216 ,  G09G2310/0218 ,  G09G2320/0261 ,  G09G2320/0266

摘要： A display panel drive capable of satisfactory image display with dither patterns suppressed. Display lines of a display panel are each divided into M display line groups including [M · (k-1)+1]th display lines (where M is a natural number, and k is a natural number of n/M or smaller) of the display panel, a display line group including [M · (k-1)+2]th display lines, a display line group including [M · (k-1)+3]th display lines, ..., a display line group including [M · (k-1)+M]th display lines. Then, to each of the display line groups, each different offset value is assigned for addition to pixel data each corresponding to the display line groups, deriving multi-grayscale pixel data. Then, a lighting mode setting or an extinction mode setting is done based on the multi-grayscale pixel data with respect to each of the pixel cells belonging to the display line groups each different in at least M subfields among subfields constituting a field of a video signal. This enables to prevent dither patterns from occurring by varying the luminance levels to be represented by the pixel cells vertically adjacent to one another in a screen.

公开(公告)号：EP0994457B1

公开(公告)日：2007-09-05

申请号：EP99307972.2

申请日：1999-10-08

申请人： VICTOR COMPANY OF JAPAN, LIMITED

发明人： Masuji, Shigehiro ,  Aiba, Hideki

IPC分类号： G09G3/28 ,  G09G3/20

CPC分类号： G09G3/2055 ,  G09G3/2803 ,  G09G2320/0276 ,  H04N5/70 ,  H04N2005/7466

公开(公告)号：EP1639576A2

公开(公告)日：2006-03-29

申请号：EP04746931.7

申请日：2004-06-28

申请人： NEC Electronics Corporation ,  Bitboys, Oy

发明人： FURIHATA, Hirobumi c/o NEC Electronics Corporation ,  OOHASHI, Katsuhisa c/o NEC Electronics Corporation ,  SHIODA, Junyou, c/o NEC Electronics Corporation ,  TESHIROGI, Yoshiyuki, c/o NEC Electronics Corp. ,  NOSE, Takashi, c/o NEC Electronics Corporation ,  TUOMI, Mika, c/o Bitboys OY

IPC分类号： G09G5/393 ,  G09G3/36

CPC分类号： G09G5/393 ,  G06F3/14 ,  G09G3/2011 ,  G09G3/2018 ,  G09G3/2025 ,  G09G3/2048 ,  G09G3/2051 ,  G09G3/2055 ,  G09G3/3648 ,  G09G3/3666 ,  G09G3/3688 ,  G09G5/346 ,  G09G5/363 ,  G09G5/397 ,  G09G5/40 ,  G09G2320/0257 ,  G09G2320/0285 ,  G09G2320/106 ,  G09G2340/02 ,  G09G2340/10 ,  G11C11/413

摘要： A controller/driver is composed of a work memory (12), a graphic engine (11), a display memory (13), and a driver circuit. The graphic engine converts externally received image data (4) into first bitmap data (21), and stores the first bitmap data in the work memory. The display memory receives and stores second bitmap data developed from the first bitmap data stored in the work memory. The driver circuit drives a display panel (3) in response to the second bitmap data received from the display memory. The display memory has the same number of columns as vertical data lines of the display panel.