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    PDP display drive pulse controller for preventing light emission center fluctuation
    6.
    发明授权
    PDP display drive pulse controller for preventing light emission center fluctuation 失效
    PDP显示驱动脉冲控制器，用于防止发光中心波动

    公开(公告)号：US06462721B2

    公开(公告)日：2002-10-08

    申请号：US09915505

    申请日：2001-07-27

    申请人： Mitsuhiro Kasahara ,  Yuichi Ishikawa ,  Tomoko Morita

    发明人： Mitsuhiro Kasahara ,  Yuichi Ishikawa ,  Tomoko Morita

    IPC分类号： G09G328

    CPC分类号： G09G3/2022 ,  G09G3/2803 ,  G09G3/2942 ,  G09G2320/0266

    摘要： A drive pulse controller creates a driving signal for a display device that produces a gradation display. Each field of an input image signal is divided into a plurality of Z weighted subfields. The drive pulse controller determines a number of subfields Z for each field of the input image signal, changes the input image signal into a Z-bit brightness signal, specifies a number of sustain pulses for each subfield within a field, creates a driving signal for each field based on the Z-bit brightness signal and the number of sustain pulses, selects one of light emission time data stored in a time data source based on the determined Z, and calculates a delay time based on the selected light emission time data, such that the most-weighted subfields of consecutive fields having different numbers of subfields Z are positioned substantially at the same time.

    摘要翻译： 驱动脉冲控制器产生用于产生灰度显示的显示装置的驱动信号。 输入图像信号的每个场被分成多个Z个加权子场。 驱动脉冲控制器确定输入图像信号的每个场的子场数Z，将输入图像信号改变为Z位亮度信号，指定场内每个子场的维持脉冲数，创建驱动信号 基于Z位亮度信号和维持脉冲数的每个场基于所确定的Z选择存储在时间数据源中的发光时间数据之一，并基于所选择的发光时间数据计算延迟时间， 使得具有不同子场数Z的连续场的最重加权子场基本上位于同一时间。

    Apparatus and method for making a gray scale display with subframes
    7.
    发明授权
    Apparatus and method for making a gray scale display with subframes 失效
    用子画面进行灰度显示的装置和方法

    公开(公告)号：US06965358B1

    公开(公告)日：2005-11-15

    申请号：US09623452

    申请日：2000-01-18

    申请人： Mitsuhiro Kasahara ,  Yuichi Ishikawa ,  Tomoko Morita

    发明人： Mitsuhiro Kasahara ,  Yuichi Ishikawa ,  Tomoko Morita

    IPC分类号： G09G3/20 ,  G09G3/28 ,  G09G3/34

    CPC分类号： G09G3/2059 ,  G09G3/2022 ,  G09G3/2044 ,  G09G3/2077 ,  G09G3/288 ,  G09G2320/0261 ,  G09G2320/0266 ,  G09G2320/0276 ,  G09G2320/106

    摘要： The invention provides an apparatus and a method applied to a plasma display panel or other display panel, achieving a gray scale display by using a plurality of weighted subfields. The apparatus comprises a gray scale limiting/difference diffusion circuit (17) for converting gray scale levels in a supplied image signal to specific gray scale levels that do not easily create pseudo contours in moving picture areas and to intermediate gray scale levels between the specific gray scale levels, and diffusing the difference between the converted gray scale level and the original gray scale level to adjacent pixels, and a dither circuit (19) for generating a video signal to display the converted gray scale level from the circuit (17) alternately in even and odd fields. The dither circuit (19) generates the video signal in which the gray scale levels offset the dither level above and below the dithered gray scale are alternately presented when the converted gray scale level is a dithered gray scale.

    摘要翻译： 本发明提供了一种应用于等离子体显示面板或其他显示面板的装置和方法，通过使用多个加权子场来实现灰度显示。 该装置包括灰度限制/差分扩散电路（17），用于将所提供的图像信号中的灰度级转换为在运动图像区域中不容易产生伪轮廓的特定灰度级，以及特定灰度级之间的中间灰度级 并且将转换的灰度级与原始灰度级之间的差扩散到相邻像素;以及抖动电路（19），用于产生视频信号以从电路（17）交替显示转换的灰度级， 偶数和奇数场。 抖动电路（19）产生视频信号，其中当转换的灰度级是抖动灰度时，交替呈现灰度等级偏移抖动灰度级上方和下方的抖动级别的视频信号。

    PDP display drive pulse controller
    9.
    发明授权
    PDP display drive pulse controller 失效
    PDP显示驱动脉冲控制器

    公开(公告)号：US06690388B2

    公开(公告)日：2004-02-10

    申请号：US09908936

    申请日：2001-07-20

    申请人： Mitsuhiro Kasahara ,  Yuichi Ishikawa ,  Tomoko Morita

    发明人： Mitsuhiro Kasahara ,  Yuichi Ishikawa ,  Tomoko Morita

    IPC分类号： G09G520

    CPC分类号： G09G3/2037 ,  G09G3/2022 ,  G09G3/2033 ,  G09G3/2059 ,  G09G3/2803 ,  G09G3/288 ,  G09G2320/0261 ,  G09G2320/0266 ,  G09G2320/0271 ,  G09G2320/0276 ,  G09G2320/041 ,  G09G2320/0626 ,  G09G2320/106 ,  G09G2360/144 ,  G09G2360/16

    摘要： A display apparatus creates, for each image, a number of subfields Z from a first subfield to a Zth subfield in accordance with a Z bit representation of each pixel, a weighing value for each subfield, and a number of gradation display points. The display apparatus detects a peak image brightness level and an average image brightness level. A weighing multiple including a positive integer part and a fractional part is determined based on the peak image brightness level and the average image brightness level. The weighing multiple is multiplied by the weighing value of each subfield to obtain a product capable of having a positive integer part and a fractional part. An integer value near the product is defined as a number of drive pulses for each subfield. The weighing multiple is increased as the average image brightness level decreases and as the peak image brightness level increases.

    摘要翻译： 对于每个图像，显示装置根据每个像素的Z位表示，每个子场的称重值和灰度显示点的数量，从第一子场到第Z子场创建多个子场Z。 显示装置检测峰值图像亮度水平和平均图像亮度水平。 基于峰值图像亮度水平和平均图像亮度水平来确定包括正整数部分和小数部分的称重倍数。 称重倍数乘以每个子场的称重值，以获得能够具有正整数部分和小数部分的乘积。 乘积附近的整数值被定义为每个子场的驱动脉冲数。 当平均图像亮度水平降低并且峰值图像亮度水平增加时，称量倍数增加。