公开(公告)号：US07126617B2

公开(公告)日：2006-10-24

申请号：US09985780

申请日：2001-11-06

申请人： Akira Yamamoto ,  Hirohito Kuriyama ,  Ayahito Kojima ,  Kosaku Toda

发明人： Akira Yamamoto ,  Hirohito Kuriyama ,  Ayahito Kojima ,  Kosaku Toda

IPC分类号： G09G5/10 ,  G09G3/10 ,  G09G5/00 ,  H04N5/14

CPC分类号： G09G3/2029 ,  G09G3/204 ,  G09G3/2803 ,  G09G3/2944 ,  G09G2320/0247 ,  G09G2320/0266

摘要： The method of driving a display apparatus, in which the gradation scale is represented, by the subfield method, with less flicker even when driven at a frequency of 50 Hz has been disclosed. In this method, the two most weighted subfields (subfields of Bn brightness and Bn−1 brightness when it is assumed that the frame is composed of n subfields and the brightness of n subfields is Bi (i=1−n; B1≦B2 . . . Bn−1≦Bn)) are arranged at the interval of about half the length of the frame. Because of this, there exist two peaks of the light emission intensity in a frame, the interval being about half the length of the frame, and if the display apparatus is driven at a frequency of 50 Hz and the length of the frame is 20 ms, the variation period of the light emission intensity is 10 ms and the light emission intensity varies at 100 Hz, therefore, flicker is not detected.

摘要翻译： 已经公开了通过子场方法来驱动其中表示灰度级的显示装置的方法，即使在以50Hz的频率驱动时，具有较少的闪烁。 在这种方法中，当假定该帧由n个子场组成并且n个子场的亮度为Bi（i = 1-n; B 1 <= 2）时，两个最大加权子场（Bn亮度和Bn-1亮度的子场） B 2 ... Bn-1 <= Bn））以帧的长度的大约一半的间隔排列。 因此，在帧中存在发光强度的两个峰值，间隔大约是帧的长度的一半，并且如果以50Hz的频率驱动显示装置，并且帧的长度为20ms ，发光强度的变化周期为10ms，发光强度以100Hz变化，因此未检测到闪烁。

公开(公告)号：US07098875B2

公开(公告)日：2006-08-29

申请号：US10376479

申请日：2003-03-03

申请人： Makoto Onozawa ,  Yasuji Noguchi ,  Ayahito Kojima ,  Hideaki Ohki

发明人： Makoto Onozawa ,  Yasuji Noguchi ,  Ayahito Kojima ,  Hideaki Ohki

IPC分类号： G09G3/28

CPC分类号： G09G3/2944 ,  G09G2320/046 ,  G09G2320/0626 ,  G09G2330/021 ,  G09G2330/045 ,  G09G2360/16

摘要： A display device that can prevent the thermal destruction and screen burn-in caused by display patterns has been disclosed. In this device, the display luminance is determined by the number of light emissions, and there are provided a sustain frequency control section that controls the sustain frequency, a load ratio calculation section that calculates the load ratio for each frame of display data, plural counters, a load ratio counter control section that controls so as to increase the counts of the counters corresponding to the load ratio level calculated by the load ratio calculation section, and a first judgment section that outputs a first control signal when any of the counts exceeds a first reference value, wherein the sustain frequency control section decreases the sustain frequency according to the first control signal.

摘要翻译： 已经公开了可以防止由显示图案引起的热破坏和屏幕老化的显示装置。 在该装置中，显示亮度由发光次数决定，具有控制维持频率的维持频率控制部，负责比计算部，计算各帧的显示数据的负载比，多个计数器 ，负载比计数器控制部分，其控制以增加与由负载比计算部分计算的负载比率等级对应的计数器的计数;以及第一判断部分，当任何计数超过一个时，输出第一控制信号 第一参考值，其中维持频率控制部分根据第一控制信号降低维持频率。

公开(公告)号：US06535224B2

公开(公告)日：2003-03-18

申请号：US09458809

申请日：1999-12-10

申请人： Hirohito Kuriyama ,  Katsuhiro Ishida ,  Akira Yamamoto ,  Ayahito Kojima

发明人： Hirohito Kuriyama ,  Katsuhiro Ishida ,  Akira Yamamoto ,  Ayahito Kojima

IPC分类号： G09G510

CPC分类号： G09G3/2007 ,  G09G3/2803 ,  G09G3/2944 ,  G09G5/006 ,  G09G2320/0271 ,  G09G2320/0626 ,  G09G2360/16

摘要： The present invention relates to a display device including an interface device, which can prevent from reducing a resolving power of gray scales for a dark picture signal is provided. The interface device according to the present invention is provided to prevent from decreasing a resolving power of luminance gray scales by setting a dynamic range of an analog digital converter according to a peak value of an analog picture signal. Further, a luminance control signal for determining a luminous level of the picture to be displayed is set according to the peak value of the analog picture signal. As the result, the interface device according to the present invention can generate a display signal displaying a picture having a sufficient resolving power of gray scales with a luminance (brightness) required for the darkness, even if a dark picture, of which analog picture signal is comparatively small, is generated.

摘要翻译： 本发明涉及一种显示装置，其具有能够防止灰暗图像信号的灰度分辨率降低的接口装置。 根据本发明的接口装置被提供以通过根据模拟图像信号的峰值设置模拟数字转换器的动态范围来防止降低亮度灰度级的分辨率。 此外，根据模拟图像信号的峰值来设定用于确定要显示的图像的发光度的亮度控制信号。 结果，根据本发明的接口装置可以产生显示具有足够的灰度分辨能力的图像的显示信号，即使是暗图像，其中模拟图像信号 比较小，是生成的。

公开(公告)号：US06072448A

公开(公告)日：2000-06-06

申请号：US941107

申请日：1997-09-30

申请人： Ayahito Kojima ,  Masaya Tajima ,  Hirohito Kuriyama ,  Katsuhiro Ishida ,  Akira Yamamoto

发明人： Ayahito Kojima ,  Masaya Tajima ,  Hirohito Kuriyama ,  Katsuhiro Ishida ,  Akira Yamamoto

IPC分类号： G09G3/20 ,  G09G3/28 ,  G09G3/288 ,  G09G3/291 ,  G09G3/294 ,  G09G3/296 ,  G09G3/298

CPC分类号： G09G3/2029 ,  G09G3/2022 ,  G09G3/293 ,  G09G3/294 ,  G09G2310/066 ,  G09G2320/0626 ,  G09G2330/021 ,  G09G2340/0414 ,  G09G3/2927

摘要： The plasma display device has a plasma display panel and a driving part for driving the plasma display panel in a subframe mode. The driving part has a circuit for calculating the length of one frame based on one period of a vertical synchronizing signal introduced along with an image signal from an external device, a circuit for calculating the total number of sustaining pulses contained in one frame based on a brightness information contained in the image signal, and a circuit for calculating the length of one driving period required for displaying one frame. The length of one frame and the length of one driving period thus obtained are then compared in a comparing circuit. If the one frame length is found to be shorter than the one driving length, the total number of sustaining pulses or the number of scan lines will be reduced so that the one frame length becomes shorter than the length of one driving period, thus avoiding an extraordinary display.

摘要翻译： 等离子体显示装置具有等离子体显示面板和用于以子帧模式驱动等离子体显示面板的驱动部。 驱动部分具有基于与来自外部设备的图像信号一起引入的垂直同步信号的一个周期来计算一帧的长度的电路，用于基于一个帧计算一帧中包含的维持脉冲的总数的电路 包含在图像信号中的亮度信息，以及用于计算显示一帧所需的一个驱动周期的长度的电路。 然后在比较电路中比较一帧的长度和如此获得的一个驱动周期的长度。 如果发现一个帧长度比一个驱动长度短，则维持脉冲的总数或扫描线的数量将减少，使得一个帧长度变得短于一个驱动周期的长度，从而避免了 非凡的显示。