公开(公告)号：EP1585092B1

公开(公告)日：2013-10-09

申请号：EP05006030.0

申请日：2005-03-18

申请人： Samsung Electronics Co., Ltd.

发明人： Sohn, Young-wook Jugong Apt. 42-105

IPC分类号： G09G3/28

CPC分类号： G09G3/2022 ,  G09G3/28 ,  G09G3/34 ,  G09G2320/0247 ,  G09G2320/0261 ,  G09G2320/0266 ,  G09G2320/103 ,  G09G2340/16 ,  G09G2360/16 ,  Y10S348/91

摘要： A display apparatus to receive a picture signal containing information of a picture and to process the picture signal using at least an area distinguishing the picture from another picture includes a motion detector to detect whether there is a motion in the area of the picture signal, a hysteresis generator to output hysteresis information on each area according to a detected result of the motion detector from a previous frame up to a current frame, a moving picture detector to detect whether the picture signal is a moving picture signal or a still picture signal in the area on the basis of the hysteresis information, and a gradation level converter to convert the picture signal corresponding to the area into either a group of gradation levels for a moving picture to display the moving picture signal or a group of gradation levels for a still picture to display the still picture signal according to a detecting result of the moving picture detector. With this configuration, a false contour of a moving picture signal can be attenuated, thereby minimizing a flicker.

公开(公告)号：EP1460845A4

公开(公告)日：2009-10-28

申请号：EP02786103

申请日：2002-12-13

申请人： SONY CORP

发明人： HOSHINO TAKAYA ,  SARUGAKU TOSHIO ,  SOMEYA IKUO ,  KONDO MAKOTO ,  NISHIBORI KAZUHIKO ,  AOYAMA KOJI ,  MOGI YUKIHIKO ,  UEKI NOBUO ,  KUROKAWA MASUYOSHI

IPC分类号： H04N5/253 ,  G09G5/00 ,  G09G5/391 ,  H04N5/14 ,  H04N7/01

CPC分类号： H04N7/0132 ,  H04N5/145 ,  H04N7/014 ,  Y10S348/91

公开(公告)号：EP1695329A2

公开(公告)日：2006-08-30

申请号：EP04804802.9

申请日：2004-12-14

申请人： Thomson Licensing

发明人： WEITBRUCH, Sébastien ,  THEBAULT, Cédric ,  DOSER, Ingo

IPC分类号： G09G3/28

CPC分类号： G09G3/2029 ,  G09G3/204 ,  G09G3/28 ,  G09G2320/0247 ,  G09G2320/0266 ,  G09G2320/0285 ,  G09G2320/103 ,  H04N7/0112 ,  Y10S348/91

摘要： The invention relates to a method for processing video pictures, the video pictures consisting of pixels digitally coded, the digital code word determining the length of the time period during which the corresponding pixel of a display is activated, wherein to each bit of a digital code word a certain activation duration called sub-field is assigned, the sum of the duration of the sub-fields according to a given code word determining the length of the time period during which the corresponding pixel is activated, said method comprising the following steps: - Detecting the video pictures source mode and the parity between pictures - If the source is in film mode, distributing the total number of sub-fields used for two frame raster in three groups of sub-fields, and - assigning to a value of a pixel, a code word that distributes the active sub-fields period over the three sub-fields groups. The invention is applicable to all kinds of displays based on the principle of duty cycle modulation.

公开(公告)号：EP1324598A3

公开(公告)日：2005-05-25

申请号：EP02258997.2

申请日：2002-12-27

申请人： Sharp Kabushiki Kaisha

发明人： Yoshida, Takuji ,  Kimura, Katsuji ,  Kubo, Noboro ,  Okuhata, Hiroyuki ,  Kaya, Toshiyuki ,  Hamanaka, Shinsuke ,  Ono, Eiji ,  Shirakawa, Isao

IPC分类号： H04N5/235

CPC分类号： H04N5/2357 ,  H04N5/235 ,  Y10S348/91

摘要： A flicker correction apparatus for correcting a flicker component of an image signal obtained by imaging an object using an imaging device is provided. The apparatus comprises an image average calculation section for calculating an average of the image signal, a flicker frequency calculation section for calculating a flicker frequency, a flicker data extraction section for extracting flicker data using the average of the image signal and the flicker frequency, a flicker determination section for determining the presence or absence of a flicker phenomenon using the flicker data, a flicker correction amount calculation section for calculating a flicker correction amount using the flicker data, and a flicker correction section for removing the flicker component of the image data using the flicker correction amount.

摘要翻译： 提供了一种闪烁校正装置，用于校正通过使用成像装置对对象成像而获得的图像信号的闪烁成分。 该装置包括用于计算图像信号的平均值的图像平均计算部分，用于计算闪烁频率的闪烁频率计算部分，用于使用图像信号的平均值和闪烁频率来提取闪烁数据的闪烁数据提取部分， 闪烁确定部分，用于使用闪烁数据来确定闪烁现象的存在或不存在;闪烁校正量计算部分，用于使用闪烁数据来计算闪烁校正量;以及闪烁校正部分，用于使用闪烁数据来去除图像数据的闪烁分量 闪烁校正量。

公开(公告)号：EP1307056B1

公开(公告)日：2004-10-06

申请号：EP03002299.0

申请日：1996-06-27

申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

发明人： Inoue, Sadayuki ,  Maeda, Naotoshi ,  Sukeno, Junji ,  Onishi, Hiroshi

IPC分类号： H04N9/64

CPC分类号： H04N7/0132 ,  H04N7/012 ,  H04N9/641 ,  Y10S348/91

公开(公告)号：EP1282312A2

公开(公告)日：2003-02-05

申请号：EP02018471.9

申请日：1993-08-18

申请人： FUJITSU LIMITED

发明人： Nakamoto, Makoto ,  Nakamura, Satoshi ,  Takayama, Akinori ,  Takahashi, Kazunori ,  Takigami, Akio ,  Sato, Yasuo ,  Ito, Chiaki ,  Aoki, Yoichi

IPC分类号： H04N7/01

CPC分类号： G09G5/006 ,  G09G1/285 ,  G09G5/06 ,  G09G5/391 ,  G09G5/393 ,  G09G5/395 ,  G09G2320/0247 ,  G09G2340/0407 ,  G09G2340/0414 ,  G09G2340/0421 ,  G09G2340/0428 ,  G09G2340/0442 ,  G09G2340/10 ,  G09G2340/14 ,  G09G2360/02 ,  H04N5/2628 ,  H04N7/012 ,  H04N7/0135 ,  H04N9/641 ,  Y10S348/91

摘要： An image data conversion processing device includes an issue unit (8), plural line storing units (3) and a generating unit (4) for converting to a television signal image data stored in plural kinds of developing formats in a storing unit. The image data comprises plural lines, and the television signal comprises a predetermined number of lines. The issue unit issues a transmission instruction of image data to the storing unit in accordance with a period specified by a ratio of the line number of the image data to be converted and the line number of the television signal. The plural line storing units cyclically stores the image data transmitted from the storing unit line by line on the basis of the transmission instruction of the issue unit. In synchronism with the horizontal synchronizing signal of the television signal, the generating unit multiplies the image data stored in the line storing unit by an interpolative coefficient corresponding to the developing format of the image data to be converted in the plural interpolative coefficients which are beforehand set for the plural kinds of developing formats, thereby generating the television signal.
Such a device is capable of automatically generating television signals having desirably good display performance from image data of various different formats held in a Video RAM, without using multiple sets of hardware.

公开(公告)号：EP1062809A1

公开(公告)日：2000-12-27

申请号：EP99901481.4

申请日：1999-01-14

申请人： Innovision Labs, Inc.

发明人： MEDIN, David

IPC分类号： H04N7/01 ,  H04N5/14

CPC分类号： H04N7/0132 ,  G09G5/00 ,  G09G2310/0224 ,  G09G2320/0247 ,  Y10S348/91

摘要： The present invention provides a method and system for reducing flicker within an interlaced image (fig. 1). The method and system comprises identifying an area of the interlaced image where flicker needs to be reduced (fig. 3) and adaptively adjusting a pattern of pixels derived from a non-interlaced spatial relationship of the interlaced image within the area based upon characteristics of the image (fig. 5). A flicker filter (10) is provided which utilizes an adaptive technique whereby pixel-blending (18) characteristics are constantly changed within the image depending on particular image attributes. It is unique in that high vertical resolution is maintained for detailed image content such as text and most graphics, while flicker is effectively reduced on image content that is flicker prone. The filter (18) is based on psycho-visual studies and simulations performed by the company as well as numerous prior flicker filter implementations. This has achieved the goal to maximize vertical resolution, enhancing text and graphics sharpness while still suppressing noticeable flicker.

公开(公告)号：EP1016060A1

公开(公告)日：2000-07-05

申请号：EP98936808.9

申请日：1998-06-18

申请人： Cirrus Logic, Inc

发明人： KE, Ligang ,  LUTZ, Juergen, M.

IPC分类号： G09G1/16

CPC分类号： G09G5/04 ,  G06T3/40 ,  G09G2310/0224 ,  G09G2340/0414 ,  G09G2340/0421 ,  H04N9/641 ,  Y10S348/91

摘要： A system and method for conversion of graphics from computer graphics formats to television formats are disclosed. More particularly, an improved scaling and flicker reduction system and method are disclosed for scaling personal computer (PC) graphics formats into different resolution television (TV) formats and for reducing flicker due to the conversion process of interlacing non-interlaced PC graphics to match interlaced TV formats. The scaling implementation reduces line buffer requirements by using a conditional scaling technique for converting graphics from a PC resolution format to a TV resolution format. The flicker reduction implementation provides a two-dimensional adaptive filter that selects between multiple filters so that different parts of an image may have different flicker reduction and different levels of trade off between flicker reduction and resolution. The system and method disclosed are more generally applicable to converting images from one resolution to another and to reducing flicker in images converted from a non-interlaced format to an interlaced format.

公开(公告)号：EP0982707A1

公开(公告)日：2000-03-01

申请号：EP98115607.8

申请日：1998-08-19

申请人： DEUTSCHE THOMSON-BRANDT GMBH

发明人： Correa, Carlos ,  Weitbruch, Sébastien ,  Zwing, Rainer ,  Hirtz, Gangolf

IPC分类号： G09G3/28

CPC分类号： G09G3/2033 ,  G09G3/2029 ,  G09G3/204 ,  G09G3/28 ,  G09G2320/0247 ,  G09G2320/0266 ,  Y10S348/91

摘要： Plasma Display Panels (PDP) are becoming more and more interesting for TV technology. Due to the larger size of PDPs, with larger viewing angle the large area flicker effect will become more serious in the future, in particular when handling 50Hz video standards. This invention proposes a different sub-field organisation, with different coding, which reduces large area flicker artefact, and which is characterised by:

1. Grouping of sub-fields (SF) in 2 sub-field groups (G1, G2), of similar structure.
2. The 2 sub-field groups (G1, G2) are identical in terms of the most significant sub-fields (SF) and different in terms of the least significant sub-fields (SF).
3. A sub-field coding process that distributes luminance weight symmetrically over the 2 sub-field groups (G1, G2) so as to minimise the 50Hz large area flicker luminance component.

摘要翻译： 等离子显示面板（PDP）正变得越来越有趣的电视技术。 由于PDP的尺寸较大，具有较大的可视角度大面积闪烁效果将在未来变得更加严重，特别是当处理50Hz的视频标准。 本发明提出了一种不同的子场组织，以不同的编码，这减少了大面积闪烁假象，并且所有其通过为特征：1.分组子场（SF）中的两个子场组（G1，G2） 类似的结构。 2.两个子场组（G1，G2）都在至少显著子场（SF）的条款在最显著子场（SF）的术语相同和不同。 3.一种子场编码processthat在两个子场组（G1，G2），以便最大限度地减少50Hz的大面积闪烁亮度分量对称地分布的亮度权重。

公开(公告)号：EP0706294A2

公开(公告)日：1996-04-10

申请号：EP95307058.8

申请日：1995-10-04

申请人： SONY CORPORATION

发明人： Tauchi, Yoichiro

IPC分类号： H04N9/877

CPC分类号： H04N9/8047 ,  H04N5/783 ,  H04N9/877 ,  Y10S348/91

摘要： A video signal processing apparatus and method for converting a frame-unit video signal into a field-unit video signal includes a memory (116) for storing the frame-unit video signal, a control circuit (31) for controlling reading of the stored frame-unit video data from the memory so as to obtain the field-unit video signal having fields which are arranged in a desired order and a vertical filter (32) which receives the field-unit video signal read from the memory. The vertical filter shifts a centroid of a picture represented by the received video signal in accordance with at least one coefficient which is selectively set based upon the field order. The reading of the video signal may be controlled so as to operate as a delay device thereby eliminating the need for such delay in the vertical filter. When applied to a digital VTR or the like, the present apparatus prevents line flicker and suppresses plane flicker.

摘要翻译： 一种用于将帧单元视频信号转换为场单元视频信号的视频信号处理装置和方法包括用于存储帧单元视频信号的存储器（116），用于控制所存储帧的读取的控制电路（31） - 从存储器单元视频数据，以获得具有按期望顺序排列的场的场单位视频信号和接收从存储器读取的场单位视频信号的垂直滤波器（32）。 垂直滤波器根据接收到的视频信号所表示的图像的质心，根据基于场顺序有选择地设置的至少一个系数进行移位。 可以控制视频信号的读取以便作为延迟装置进行操作，从而消除对垂直滤波器中的这种延迟的需要。 当应用于数字VTR等时，本装置防止线闪烁并抑制平面闪烁。