公开(公告)号：EP1271966A1

公开(公告)日：2003-01-02

申请号：EP02291462.6

申请日：2002-06-12

申请人： Thomson Licensing S.A.

发明人： Weitbruch, Sébastien ,  Floury, Alexa

IPC分类号： H04N13/00

CPC分类号： G09G3/2029 ,  G09G3/003 ,  G09G3/288 ,  G09G2320/0247 ,  G09G2320/0257 ,  H04N13/122 ,  H04N13/139 ,  H04N13/15 ,  H04N13/161 ,  H04N13/167 ,  H04N13/189 ,  H04N13/194 ,  H04N13/239 ,  H04N13/286 ,  H04N13/324 ,  H04N13/334 ,  H04N13/341 ,  H04N13/361 ,  H04N13/398 ,  H04N19/597

摘要： For stereoscopic displaying the new plasma display panels are providing promising results. When using shutter glasses that are controlled by the PDP, it is possible to display left and right image in short succession for stereoscopic displaying. However, there is the phosphor lag effect that is really disturbing and can totally impede the stereovision.
The frame period of a stereoscopic picture is divided to at least one left period and at least one right period for the left picture (L) and the right picture (R) respectively. According to the invention both pictures are analyzed for similarities and the common part for a pair of corresponding pixels is determined. Sub-field code words for the left/right picture are determined having a part for the specific left/right sub-fields (SLSF, SRSF) and a part for the common sub-fields (CSF). The common sub-fields (CSF) are positioned at the end of each left/right field for the left/right picture so that the phosphor lag effect is no longer visible.

摘要翻译： 为了立体显示，新的等离子显示面板提供了有希望的结果。 当使用由PDP控制的快门眼镜时，可以短时间连续显示左右图像以进行立体显示。 但是，荧光屏滞后效应确实令人不安，可能完全妨碍立体视觉。 立体图像的帧周期分别被分割为左图像（L）和右图像（R）的至少一个左周期和至少一个右周期。 根据本发明，分析两个图像的相似性并确定一对对应像素的公共部分。 左/右图片的子场码字被确定为具有用于特定左/右子场（SLSF，SRSF）的部分和用于公共子场（CSF）的部分。 公共子场（CSF）位于左/右图像的每个左/右场的末端，以便荧光体滞后效应不再可见。

公开(公告)号：EP1361559A1

公开(公告)日：2003-11-12

申请号：EP03291000.2

申请日：2003-04-24

申请人： Thomson Licensing S.A.

发明人： Thebault, Cédric ,  Weitbruch, Sébastien ,  Hoelzemann, Herbert

IPC分类号： G09G3/28 ,  G09G5/02

CPC分类号： G09G3/2022 ,  G09G3/2003 ,  G09G3/204 ,  G09G3/22 ,  G09G3/28 ,  G09G2320/0242 ,  G09G2320/0257 ,  G09G2320/0261 ,  G09G2320/0266 ,  G09G2340/16

摘要： Since the phosphor lag effect results from the slowness of the green and red phosphors and since it is not possible to make these phosphors faster, the blue one has to be made slower in order to reduce the color trail effect. Therefore, a part of the blue component is artificially delayed. Only a certain percentage of the blue component of the actual frame is transmitted during the actual frame, whereas the rest of the blue component will be transmitted during the next frames. The dynamic false contour effect introduced by this video processing may be compensated by subfield shifting.

摘要翻译： 由于荧光体滞后效应是由绿色和红色荧光体的缓慢引起的，并且由于不可能使这些荧光体更快，所以为了减少色迹效应，必须使蓝色光更慢。 因此，蓝色部件的一部分被人为地延迟。 在实际帧中只发送实际帧的蓝色分量的一定百分比，而在下一帧期间将传输蓝色分量的其余部分。 通过该视频处理引入的动态假轮廓效果可以通过子场移位来补偿。

公开(公告)号：EP1455331A1

公开(公告)日：2004-09-08

申请号：EP03103385.5

申请日：2003-09-15

申请人： Thomson Licensing S.A.

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

IPC分类号： G09G3/28

CPC分类号： G09G3/2059 ,  G09G3/2029 ,  G09G3/2033 ,  G09G3/28 ,  G09G2310/0205 ,  G09G2320/0261 ,  G09G2320/0266

摘要： The present invention relates to a coding method intended to improve the performance of GCC coding based on the temporal centre of gravity of displayed video codes. According to the invention, the number of video levels that can be selected in order to implement the GCC coding is increased by increasing the number of subfields in the video level display frame. This increase in the number of subfields is made possible by simultaneously addressing the cells of at least two adjacent rows of the PDP during at least two subfields of the video image display frame.

摘要翻译： 本发明涉及一种旨在提高基于所显示的视频码的时间重心的GCC编码的性能的编码方法。 根据本发明，通过增加视频级显示帧中的子字段的数量来增加为了实现GCC编码可以选择的视频级别的数量。 通过在视频图像显示帧的至少两个子场期间同时寻址PDP的至少两个相邻行的单元，使子场数量的增加成为可能。

公开(公告)号：EP1288899A1

公开(公告)日：2003-03-05

申请号：EP02292021.9

申请日：2002-08-12

申请人： Thomson Licensing S.A.

发明人： Weitbruch, Sébastien ,  Thebault, Cedric ,  Goetzke, Axel

IPC分类号： G09G3/28

CPC分类号： G09G3/2037 ,  G09G3/2003 ,  G09G3/2029 ,  G09G3/204 ,  G09G3/22 ,  G09G3/28 ,  G09G2320/0242 ,  G09G2320/0257 ,  G09G2320/0261

摘要： The difference between the time responses of phosphor elements of a plasma display panel (17) shall be reduced by signal processing means without a need of a motion estimator.
Therefore, the sub-fields for driving the luminous elements are reorganized in at least two groups of sub-fields arranged one after the other within one frame period. Luminous elements with long time responses are driven by the sub-fields of the first group and luminous elements with short time responses are driven by sub-fields of the first and second group. Thus, the phosphor lag effects are reduced.

摘要翻译： 等离子体显示面板（17）的荧光体元件的时间响应之间的差异应由信号处理装置减少，而不需要运动估计器。 因此，用于驱动发光元件的子场在一个帧周期内一个接一个地排列的至少两组子场重组。 具有长时间响应的发光元件由第一组的子场驱动，具有短时间响应的发光元件由第一组和第二组的子场驱动。 因此，荧光体滞后效应降低。

公开(公告)号：EP1271966B1

公开(公告)日：2004-09-15

申请号：EP02291462.6

申请日：2002-06-12

申请人： Thomson Licensing S.A.

发明人： Weitbruch, Sébastien ,  Floury, Alexa

IPC分类号： H04N13/00

CPC分类号： G09G3/2029 ,  G09G3/003 ,  G09G3/288 ,  G09G2320/0247 ,  G09G2320/0257 ,  H04N13/122 ,  H04N13/139 ,  H04N13/15 ,  H04N13/161 ,  H04N13/167 ,  H04N13/189 ,  H04N13/194 ,  H04N13/239 ,  H04N13/286 ,  H04N13/324 ,  H04N13/334 ,  H04N13/341 ,  H04N13/361 ,  H04N13/398 ,  H04N19/597

摘要： For stereoscopic displaying the new plasma display panels are providing promising results. When using shutter glasses that are controlled by the PDP, it is possible to display left and right image in short succession for stereoscopic displaying. However, there is the phosphor lag effect that is really disturbing and can totally impede the stereovision. The frame period of a stereoscopic picture is divided to at least one left period and at least one right period for the left picture (L) and the right picture (R) respectively. According to the invention both pictures are analyzed for similarities and the common part for a pair of corresponding pixels is determined. Sub-field code words for the left/right picture are determined having a part for the specific left/right sub-fields (SLSF, SRSF) and a part for the common sub-fields (CSF). The common sub-fields (CSF) are positioned at the end of each left/right field for the left/right picture so that the phosphor lag effect is no longer visible.

公开(公告)号：EP1262947A1

公开(公告)日：2002-12-04

申请号：EP02291257.0

申请日：2002-05-21

申请人： Thomson Licensing S.A.

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

IPC分类号： G09G3/28 ,  G09G3/20

CPC分类号： G09G3/2003 ,  G09G3/2022 ,  G09G3/2051 ,  G09G3/2055 ,  G09G3/288 ,  G09G2340/0457

摘要： The invention is related to a new kind of dithering method for plasma display panels. In a former Europena Patent Application a dithering method for the plasma display technology has been presented that utilizes a 3-dimensional dither pattern for the repeated use in a video sequence. A first dimension corresponds to a number of video frames, a second dimension corresponds to a number of video lines, and a third dimension corresponds to a number of cells or pixels in a video line. It has been found that this dither pattern has for some video levels the drawback of a generating a noticeable pattern in homogenous surfaces on the screen that reduces the picture quality.
In order to overcome this drawback the invention proposes a new degree of freedom for the dither pattern. Different dither patterns are provided for different entries in a number of least significant bits of the data word representing the input video level. The invention makes it possible to suppress the disturbing patterns occurring on the plasma screen when using the conventional dither patterns.

公开(公告)号：EP2015562A1

公开(公告)日：2009-01-14

申请号：EP07301218.9

申请日：2007-07-10

申请人： THOMSON Licensing S.A.

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

IPC分类号： H04N5/217 ,  H04N9/04 ,  H04N9/09

CPC分类号： H04N5/3675 ,  H04N5/374 ,  H04N9/045 ,  H04N9/09 ,  H04N2209/049

摘要： CMOS image sensors are usually suffering from fixed pattern noise and random defect pixels.
A processing device (15) for correcting of at least one defect pixel value of an image sensor unit is proposed, the image sensor unit comprising at least a first and a second pixel array (1,2,3), wherein the image sensor unit is embodied to project the same image onto each pixel array (1,2,3), the processing device (15) comprising at least a first and a second input channel (11,12,13) for receiving pixel values of the first and the second pixel array, respectively, wherein the processing device (15) is operable to exchange the defect pixel value by a corrected pixel value, wherein the corrected pixel value is estimated by evaluating the values of neighbouring pixels of the defect pixel of the same pixel array,
wherein the corrected pixel value is estimated by evaluating values of a corresponding pixel and its neighbouring pixels of the second pixel array at the same location as the defect pixel of the first pixel array in respect to the projected image.

摘要翻译： CMOS图像传感器一般由固定模式噪声和随机缺陷像素的痛苦。 用于图像传感器单元的至少一个缺陷像素值的校正的处理装置（15）提出的，图像传感器单元，包括至少一个第一和一个第二pixelarray（1,2,3），worin图像传感器单元 被实施为投影到每一个像素阵列（1,2,3），该处理装置（15）相同的图像，其包括至少一个第一和一个第二输入信道（11,12,13），用于接收第一像素值和 第二像素阵列，分别worin上述处理装置（15）可操作用于通过校正像素值，worin校正像素值通过计算同一像素的缺陷像素的相邻像素的值来估计交换缺陷像素值 阵列，worin校正像素值通过计算像素值和其在相对于所述投影图像在相同的位置作为所述第一像素阵列的缺陷像素对应第二像素阵列的相邻像素估计。

公开(公告)号：EP1359564A3

公开(公告)日：2004-10-13

申请号：EP03290986.3

申请日：2003-04-22

申请人： Thomson Licensing S.A.

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

IPC分类号： H04N5/44 ,  G09G3/28 ,  H04N5/21

CPC分类号： G09G3/2051 ,  G09G3/2029 ,  G09G3/2037 ,  G09G3/204 ,  G09G3/288 ,  G09G2320/0247 ,  G09G2320/0261 ,  G09G2320/0276 ,  H04N5/46 ,  H04N5/70 ,  H04N7/0132

摘要： In the field of video displaying the low video levels do not generate large area flicker. For displaying video sources with higher frame rate, it is therefore the idea of the invention, to extract from two corresponding pixels of two successive video frames a common portion (V x ) that will be displayed at a sub-frequency f v /2 while the individual portions (V 1 ',V 2 ') of the corresponding pixels video are displayed at the correct high frequency f v . The time period for displaying two frames is divided into three sub-groups. Two groups of sub-fields with similar sizes, for displaying the individual portions (V 1 ',V 2 ') and one group of sub-fields, called extra-codes, for displaying the common portion (V x ). This enables to eliminate large area flicker artifacts from PDPs, when displaying 50Hz based video norms by using upconverted 100Hz video sequences and to display real high frequency video on the PDP (ca. up to 120Hz) without frame dropping.

公开(公告)号：EP1391867A1

公开(公告)日：2004-02-25

申请号：EP03292006.8

申请日：2003-08-11

申请人： Thomson Licensing S.A.

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

IPC分类号： G09G3/28

CPC分类号： G09G3/2051 ,  G09G3/2029 ,  G09G3/288 ,  G09G2320/0242 ,  G09G2320/0261 ,  G09G2320/0276

摘要： In many cases it is not possible to reproduce enough video levels on a PDP due to timing issues or a specific solution against the false contour effect. In such cases dithering is used to render all required levels. In order to reduce the visibility of the dithering noise there is performed a common change of the sub-field organization together with a modification of the input video data through an appropriate transformation curve based on the human visual system luminance sensitivity (Weber-Fechner law).

摘要翻译： 在许多情况下，由于定时问题或针对假轮廓效应的特定解决方案，不可能在PDP上再现足够的视频级别。 在这种情况下，抖动用于渲染所有必需的级别。 为了降低抖动噪声的可视性，通过基于人类视觉系统亮度灵敏度（Weber-Fechner定律）的适当变换曲线，进行子场组织的共同改变以及输入视频数据的修改， 。

公开(公告)号：EP1359564A2

公开(公告)日：2003-11-05

申请号：EP03290986.3

申请日：2003-04-22

申请人： Thomson Licensing S.A.

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

IPC分类号： G09G3/28 ,  H04N5/21

CPC分类号： G09G3/2051 ,  G09G3/2029 ,  G09G3/2037 ,  G09G3/204 ,  G09G3/288 ,  G09G2320/0247 ,  G09G2320/0261 ,  G09G2320/0276 ,  H04N5/46 ,  H04N5/70 ,  H04N7/0132

摘要： In the field of video displaying the low video levels do not generate large area flicker. For displaying video sources with higher frame rate, it is therefore the idea of the invention, to extract from two corresponding pixels of two successive video frames a common portion (V x ) that will be displayed at a sub-frequency f v /2 while the individual portions (V 1 ',V 2 ') of the corresponding pixels video are displayed at the correct high frequency f v . The time period for displaying two frames is divided into three sub-groups. Two groups of sub-fields with similar sizes, for displaying the individual portions (V 1 ',V 2 ') and one group of sub-fields, called extra-codes, for displaying the common portion (V x ). This enables to eliminate large area flicker artifacts from PDPs, when displaying 50Hz based video norms by using upconverted 100Hz video sequences and to display real high frequency video on the PDP (ca. up to 120Hz) without frame dropping.

摘要翻译： 在视频显示领域，低视频级别不会产生大面积的闪烁。 为了显示具有更高帧速率的视频源，因此本发明的目的是从两个连续视频帧的两个对应的像素提取将以子频率fv / 2显示的公共部分（Vx），而个体 相应像素视频的部分（V1'，V2'）以正确的高频fv显示。 显示两帧的时间段分为三个子组。 具有相似尺寸的两组子场，用于显示用于显示公共部分（Vx）的各个部分（V1'，V2'）和一组子场，称为附加码。 当通过使用上转换的100Hz视频序列显示50Hz的视频规范，并且在PDP（高达120Hz）下显示实际的高频视频而不丢帧时，这能够消除来自PDP的大面积闪烁伪影。