公开(公告)号：US07319441B2

公开(公告)日：2008-01-15

申请号：US10515496

申请日：2003-05-23

申请人： Jean-Raphaël Bezal ,  Gérard Morizot ,  Gérard Rilly

发明人： Jean-Raphaël Bezal ,  Gérard Morizot ,  Gérard Rilly

IPC分类号： G09G3/28

CPC分类号： G09G3/296 ,  G09G3/2965 ,  G09G2310/066

摘要： Provided is a device for supplying an array of electrodes of a plasma display panel, the device including, for each electrode, a driver having a series of switches and a series of diodes, the common points of which are connected to the electrode. The upper terminal of the series of diodes is connected directly to the output of a sustain generator and the lower terminal is connected to the sustain generator via a power switch. One of the terminals of the series of switches is connected to the output of a negative voltage generator. In periods during which the negative voltage generator applies a negative voltage to the electrodes, the power switch is open in order to avoid a short-circuit via the diode of the sustain generator.

摘要翻译： 提供了一种用于提供等离子体显示面板的电极阵列的装置，该装置包括用于每个电极的具有一系列开关的驱动器和一系列二极管，其公共点连接到电极。 一系列二极管的上端子直接连接到维持发生器的输出端，而下端子通过电源开关连接到维持发生器。 一系列开关的一个端子连接到负电压发生器的输出端。 在负电压发生器向电极施加负电压的时段中，电源开关断开，以避免通过维持发生器的二极管发生短路。

公开(公告)号：US20050212726A1

公开(公告)日：2005-09-29

申请号：US11079537

申请日：2005-03-15

申请人： Kiyoshi Namba ,  Takuma Yoshida

发明人： Kiyoshi Namba ,  Takuma Yoshida

IPC分类号： G06K9/00 ,  G09G3/22 ,  G09G3/28

CPC分类号： G09G3/22 ,  G09G3/28 ,  G09G2320/0271 ,  G09G2320/046 ,  G09G2320/066 ,  G09G2320/0666 ,  G09G2320/0673 ,  G09G2360/16

摘要： Disclosed is a burn-in reduction device capable of favorably reducing burn-in on a screen. The burn-in reduction device comprises luminance level distribution detecting means for detecting a statistical distribution with respect to luminance levels of pixels of an image based on an input image signal; and luminance changing means for changing a luminance level of the input image signal in accordance with the statistical distribution detected by the luminance level distribution detecting means.

摘要翻译： 公开了能够有利地减少屏幕上的老化的老化减少装置。 老化抑制装置包括：亮度级别分布检测装置，用于根据输入的图像信号检测关于图像的像素的亮度级别的统计分布; 以及亮度改变装置，用于根据由亮度级别分布检测装置检测的统计分布来改变输入图像信号的亮度级。

公开(公告)号：US20050195280A1

公开(公告)日：2005-09-08

申请号：US11067603

申请日：2005-02-28

申请人： Takezo Murakami ,  Yoshiharu Simizu

发明人： Takezo Murakami ,  Yoshiharu Simizu

IPC分类号： H04N5/45

CPC分类号： G09G3/22 ,  G09G3/007 ,  G09G3/288 ,  G09G2320/046 ,  G09G2320/0613 ,  G09G2320/103

摘要： A display device having a prolonged lifetime by preventing deterioration of image quality by reducing a burn-in is provided. A display device includes a still image region detecting unit for detecting still image data from video data, a detecting unit for detecting, as an edge portion, a pair of pixels having a level difference of image data larger than a set level difference, of a plurality of pair of adjacent pixels for the still image data, and a level adjusting unit for adjusting a level of the image data of a group of pixels including the edge portion and arranged consecutively and outputting the image data after the adjustment to a driving unit. The level adjusting unit adds/subtracts a random noise to/from the image data of the group of pixels.

摘要翻译： 提供了通过减少老化来防止图像质量劣化而延长使用寿命的显示装置。 显示装置包括用于从视频数据检测静止图像数据的静止图像区域检测单元，检测单元，用于检测作为边缘部分的具有大于设定水平差的图像数据的电平差的一对像素， 多个用于静止图像数据的相邻像素对;以及电平调整单元，用于调整包括边缘部分的一组像素的图像数据的电平，并且将其调整后的图像数据输出到驱动单元。 电平调整单元向/从该像素组的图像数据中添加/减去随机噪声。

公开(公告)号：US20060268378A1

公开(公告)日：2006-11-30

申请号：US11432352

申请日：2006-05-12

申请人： Osamu Yano

发明人： Osamu Yano

IPC分类号： G03F3/08 ,  G06K15/00

CPC分类号： H04N5/70 ,  G09G3/2007 ,  G09G2320/02 ,  G09G2320/0276 ,  G09G2360/16 ,  H04N5/202

摘要： A display apparatus is provided with a reverse gamma conversion circuit, an image signal processing circuit, and a display device. The display device is a PDP in which the light-emitting characteristics are linear. The image signal processing circuit is provided with a smoothing signal generator for smoothing image signals after reverse gamma conversion. Also provided is a detector whereby patterns that are to be processed as signals are detected from the image. The patterns include points of variation in which the gradation difference prior to reverse gamma conversion is a single gradation and in which the gradation difference is made to be two gradations or more due to reverse gamma conversion. A substitution unit is provided for substituting the smoothed gradation values in place of a portion of the gradation values of the pattern, and outputting the result to the display device.

摘要翻译： 显示装置设置有反向伽马转换电路，图像信号处理电路和显示装置。 显示装置是发光特性为直线状的PDP。 图像信号处理电路设置有平滑信号发生器，用于在反向伽马转换之后平滑图像信号。 还提供了一种检测器，其中从图像检测要作为信号处理的图案。 这些图案包括在反向伽马转换之前的灰度差为单一灰度的变化点，并且由于反向伽马转换，灰度级差异为两个等级或更多。 提供替代单元来代替平滑灰度值代替图案的灰度值的一部分，并将结果输出到显示装置。

公开(公告)号：US06922191B2

公开(公告)日：2005-07-26

申请号：US09739789

申请日：2000-12-20

申请人： Takuya Watanabe

发明人： Takuya Watanabe

IPC分类号： G09G3/20 ,  G09G3/28 ,  G09G3/288 ,  G09G3/291 ,  G09G3/294 ,  G09G3/296 ,  G09G5/00

CPC分类号： G09G3/2007 ,  G09G3/294 ,  G09G3/2965 ,  G09G2310/066 ,  G09G2320/0626 ,  G09G2320/066 ,  G09G2330/024 ,  G09G2360/16

摘要： A drive apparatus for a plasma display panel useing a charge recovery circuit 12 that re-uses a recovered electrical charge, the drive apparatus comprising: a brightness detection means 16, 17 for detecting a brightness so as to obtain screen brightness information; and a charge recovery timing control means 4 for controlling a charge recovery period T from a time at which a charge recovery operation of the charge recovery circuit 12 starts to a time of fixing to a sustaining potential or a ground potential, wherein the charge recovery timing control means 4 controls the charge recovery period of the charge recovery circuit 4 in response to the brightness information obtained by the brightness detection means 16, 17.

摘要翻译： 一种等离子体显示面板的驱动装置，其使用重新利用恢复的电荷的充电恢复电路12，该驱动装置包括：用于检测亮度以获得屏幕亮度信息的亮度检测装置16,17; 以及充电恢复定时控制装置4，用于从充电恢复电路12的充电恢复操作开始到固定到维持电位或接地电位的时间控制充电恢复期间T，其中充电恢复时间 控制装置4响应于由亮度检测装置16,17获得的亮度信息来控制充电恢复电路4的充电恢复周期。

公开(公告)号：US20050265628A1

公开(公告)日：2005-12-01

申请号：US11130398

申请日：2005-05-17

申请人： Yasunori Takahashi

发明人： Yasunori Takahashi

IPC分类号： G06K9/48 ,  G09G3/20 ,  G09G3/28

CPC分类号： G09G3/2003 ,  G09G3/2022 ,  G09G3/28 ,  G09G2320/0242 ,  G09G2320/0261 ,  G09G2320/0266 ,  G09G2320/0271

摘要： A false contour reduction device reduces the occurrence of false contours on a display screen. The false contour reduction device includes a false contour occurrence pixel detection circuit, a specific color pixel detection circuit, and a false contour reduction processing circuit. The false contour occurrence pixel detection circuit detect at which pixels false contours will occur among the pixels in an image based on the input image signal. The detected pixels are false-contour-occurring pixels. The specific color pixel detection circuit detects pixels which have a specific color within a specific color range, among the false-contour-occurring pixels. The detected pixels are specific color false-contour-occurring pixels. The false contour reduction processing circuit performs a false contour reducing process on the specific color false-contour-occurring pixels.

摘要翻译： 假轮廓减少装置减少显示屏幕上的假轮廓的发生。 假轮廓降低装置包括假轮廓出现像素检测电路，特定彩色像素检测电路和假轮廓降低处理电路。 假轮廓出现像素检测电路基于输入图像信号检测在图像中的像素之间将出现哪些像素假轮廓。 检测到的像素是假轮廓出现的像素。 具体的彩色像素检测电路在假轮廓出现像素中检测具有特定颜色范围内的特定颜色的像素。 检测到的像素是特定的颜色假轮廓出现像素。 假轮廓降低处理电路对特定颜色假轮廓出现像素执行假轮廓降低处理。

公开(公告)号：US20050264480A1

公开(公告)日：2005-12-01

申请号：US11104648

申请日：2005-04-13

申请人： Hajime Homma ,  Mitsuhiro Ishizuka ,  Shinji Hirakawa ,  Shinya Tsuchida ,  Koji Hashimoto

发明人： Hajime Homma ,  Mitsuhiro Ishizuka ,  Shinji Hirakawa ,  Shinya Tsuchida ,  Koji Hashimoto

IPC分类号： G09G3/20 ,  G09G3/28 ,  G09G3/288 ,  G09G3/291 ,  G09G3/292 ,  G09G3/294 ,  G09G3/298

CPC分类号： G09G3/2803 ,  G09G3/2022 ,  G09G3/2927 ,  G09G3/294 ,  G09G3/296 ,  G09G2310/066 ,  G09G2320/0228 ,  G09G2320/0238

摘要： Disclosed is a method of driving a plasma display panel. In this method, one field corresponding to one image is divided into a plurality of sub-fields, and at least one second sub-field is arranged after a first sub-field. In the first sub-field, the method comprises a first step of forming wall charges with negative polarity near the scanning electrode and forming wall charges with positive polarity near the common electrode and the data electrode; a second step of adjusting an amount of the wall charges with negative polarity near the scanning electrode and an amount of the wall charges with positive polarity near the common electrode and the data electrode; a third step of generating a writing discharge in a selected display cell of the display cells; a fourth step of generating light emission for display; and a fifth step of erasing a part of the wall charges in the display cell which emits light in the fourth step. In the second sub-field, the method comprises the same steps as the third, fourth and fifth steps. A potential difference between a scanning electrode and a common electrode in each of the fifth steps in the first and second sub-fields is set to be smaller than a potential difference between a scanning electrode and a common electrode in each of the third steps in the first and second sub-fields.

摘要翻译： 公开了一种驱动等离子体显示面板的方法。 在该方法中，对应于一个图像的一个场被划分为多个子场，并且在第一子场之后布置至少一个第二子场。 在第一子场中，该方法包括在扫描电极附近形成具有负极性的壁电荷并在公共电极和数据电极附近形成具有正极性的壁电荷的第一步骤; 在公共电极和数据电极附近调整负极附近的扫描电极的壁电荷量和壁极电荷量的第二步骤; 在显示单元的所选择的显示单元中产生写入放电的第三步骤; 产生用于显示的发光的第四步骤; 以及在第四步骤中擦除在发光的显示单元中的一部分壁电荷的第五步骤。 在第二子场中，该方法包括与第三，第四和第五步相同的步骤。 在第一和第二子场中的第五步骤中的每一个中的扫描电极和公共电极之间的电位差设定为小于第三步骤中的每个第三步骤中的扫描电极和公共电极之间的电位差 第一和第二子字段。

公开(公告)号：US20050258727A1

公开(公告)日：2005-11-24

申请号：US11130405

申请日：2005-05-17

申请人： Tadahiko Kanoh ,  Takashi Furutani

发明人： Tadahiko Kanoh ,  Takashi Furutani

IPC分类号： G02B5/22 ,  G02B5/20 ,  G09F9/00 ,  H01J5/16 ,  H01J17/49 ,  H01J29/88 ,  H01J61/40

CPC分类号： H01J11/44 ,  G02B5/20

摘要： The present invention provides an optical filter for a display device capable to improve the bright-location contrast, and a display device in particular a plasma display device incorporating the optical filter. In a transmittance spectrum of the optical filter, a transmittance in a region having a wavelength range of 430 nm to 445 nm, a transmittance in a region having a wavelength range of 535 to 560 nm, and a transmittance in a region having a wavelength range of 605 to 630 nm are set to 80% or less of the maximum transmittance over the entire visible wavelength region.

摘要翻译： 本发明提供一种能够提高亮度对比度的显示装置的光学滤波器，特别是包括该滤光器的等离子体显示装置的显示装置。 在滤光器的透射光谱中，在波长范围为430nm至44​​5nm的区域中的透射率，波长范围为535至560nm的区域中的透射率和具有波长范围的区域中的透射率 在整个可见光波长范围内将605〜630nm的最大透射率设定为80％以下。

公开(公告)号：US20050237276A1

公开(公告)日：2005-10-27

申请号：US11104652

申请日：2005-04-13

申请人： Shinya Tsuchida ,  Shinji Hirakawa ,  Mitsuhiro Ishizuka ,  Koji Hashimoto ,  Hajime Homma

发明人： Shinya Tsuchida ,  Shinji Hirakawa ,  Mitsuhiro Ishizuka ,  Koji Hashimoto ,  Hajime Homma

IPC分类号： G09G3/28 ,  G09G3/288

CPC分类号： G09G3/2927 ,  G09G2320/041

摘要： When a discharge start voltage takes a normal value under the normal temperature, priming discharge starts at a time t1. In this case, at a time t3 that is later than the time t1 by a predetermined time t, a sustain driver control signal Ssud2 is raised to put a sustain electrode into the floating state to stop the priming discharge. When the discharge start voltage takes a higher value than usual under the high temperature, the priming discharge starts at a time t2. In this case, at a time t4 that is later than the time t2 by the predetermined time t, the sustain driver control signal Ssud2 is lowered to put the sustain electrode into the floating state to stop the priming discharge. With such a configuration, provided is a plasma display device capable of implementing excellent and stable display quality while maintaining constant, even if a discharge start voltage varies, the charge state in display cells after a priming period, and a drive method for such a plasma display device.

摘要翻译： 当放电启动电压在正常温度下正常值时，启动放电在时间t 1开始。 在这种情况下，在比时刻t 1晚了规定时间t的时刻t 3，维持驱动控制信号Ssud2上升，使维持电极成为浮置状态，停止引发放电。 当放电开始电压在高温下比通常值高时，启动放电在时间t 2开始。 在这种情况下，在比时刻t 2晚了规定时间t的时刻t 4，维持驱动控制信号Ssud2降低，使维持电极成为浮置状态，停止引发放电。 通过这样的结构，即使放电开始电压发生变化，能够实现优异且稳定的显示质量，同时保持恒定的等离子体显示装置，在启动周期之后的显示单元中的电荷状态，以及这种等离子体的驱动方法 显示设备。

公开(公告)号：US20050156951A1

公开(公告)日：2005-07-21

申请号：US10998166

申请日：2004-11-29

申请人： Masahiko Okuzawa

发明人： Masahiko Okuzawa

IPC分类号： H04N5/205 ,  G09G3/20 ,  G09G3/28 ,  G09G3/296 ,  G09G5/00 ,  G09G5/10 ,  G09G5/36 ,  H04N5/66

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

摘要： A dynamic false contour reducing circuit which comprises a false contour detector, an error diffusion processing part, and a display controller. The false contour detector receives an input signal for displaying an image at a pixel of interest to detect a false contour magnitude at the pixel of interest when an image is displayed at the pixel of interest based on the input signal. The error diffusion processing part performs error diffusion processing for the input signal in a manner depending on the level of the false contour magnitude detected by the false contour detector. The display controller controls a display part such that an image is displayed based on the input signal which has undergone the error diffusion processing by the error diffusion processing part.

摘要翻译： 一种动态假轮廓降低电路，其包括假轮廓检测器，误差扩散处理部分和显示控制器。 假轮廓检测器接收用于在感兴趣的像素处显示图像的输入信号，以基于输入信号在感兴趣的像素上显示图像时检测感兴趣的像素处的假轮廓幅度。 误差扩散处理部以取决于由假轮廓检测器检测出的假轮廓大小的水平的方式对输入信号进行误差扩散处理。 显示控制器控制显示部分，使得基于由误差扩散处理部分进行的误差扩散处理的输入信号显示图像。