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    • 21. 发明授权
    • Image processing apparatus
    • 图像处理装置
    • US09002104B2
    • 2015-04-07
    • US13763969
    • 2013-02-11
    • Ryuji Yamada
    • Ryuji Yamada
    • G06K9/00G06K9/36G06K9/46H04N1/64
    • G06K9/4652H04N1/64H04N1/644
    • An image processing apparatus includes a reduction unit and a compression unit. The reduction unit is configured to execute color-number reduction processing for each block configured by a plurality of pixels included in a processing target image expressed by processing target image data, the color-number reduction processing including reducing the number of colors expressed by the plurality of pixels in the block to generate image data having the reduced number of colors from the processing target image data, a gradation-number of each color value included in the image data having the reduced number of colors being the same as a gradation-number of each color value included in the processing target image data. The compression unit is configured to execute compression processing using the image data having the reduced number of colors to generate compressed image data.
    • 图像处理装置包括缩小单元和压缩单元。 还原单元被配置为对由处理目标图像数据表示的处理目标图像中包括的多个像素构成的每个块执行色数减少处理,所述色数减少处理包括减少由多个 以生成来自处理对象图像数据的具有减少的颜色数量的图像数据,包括在具有减少数量的颜色的图像数据中的每个颜色值的灰度数与灰度数相同 每个颜色值包括在处理目标图像数据中。 压缩单元被配置为使用具有减少的颜色数量的图像数据来执行压缩处理以生成压缩图像数据。
    • 22. 发明授权
    • Image processing apparatus
    • 图像处理装置
    • US08855445B2
    • 2014-10-07
    • US13763983
    • 2013-02-11
    • Ryuji Yamada
    • Ryuji Yamada
    • G06K9/32G06K15/02G06T3/40
    • G06T3/40
    • An image processing apparatus includes: an acquisition unit configured to acquire original image data expressing an original image that comprises a first type pixel and a second type pixel; and an enlargement processing unit configured to execute enlargement processing for the original image data to generate enlarged image data expressing an enlarged image that is obtained by enlarging the original image in a first direction. The enlargement processing unit includes: a pixel group selection unit configured to select a pixel group extending in a second direction intersecting with the first direction in the enlarge image when a specific pattern configured by the first type pixel and the second type pixel is included in the original image; and a setting unit configured to set a pixel configuring the pixel group in the enlarged image as the second type pixel.
    • 一种图像处理装置包括:获取单元,被配置为获取表示包括第一类型像素和第二类型像素的原始图像的原始图像数据; 以及放大处理单元,被配置为对原始图像数据进行放大处理,以生成表示通过沿第一方向放大原始图像而获得的放大图像的放大图像数据。 放大处理单元包括:像素组选择单元,被配置为当由第一类型像素和第二类型像素构成的特定图案包括在放大图像中时,在与放大图像中的第一方向相交的第二方向上延伸的像素组 原始图像 以及设置单元,被配置为将构成放大图像中的像素组的像素设置为第二类型像素。
    • 23. 发明授权
    • Image processing apparatus for generating distortion free image data with screen angle using dither matrix
    • 用于使用抖动矩阵产生具有屏幕角度的无失真图像数据的图像处理装置
    • US08817322B2
    • 2014-08-26
    • US13770386
    • 2013-02-19
    • Ryuji Yamada
    • Ryuji Yamada
    • G06K15/00G06F3/12G06K15/02
    • G06K15/1881G06F3/12G06F3/1211G06F3/122G06F3/1247G06K15/1814G06T3/40
    • An image processing apparatus includes: a change processing unit configured to execute change processing of changing a pixel-number ratio S for distortion-free image data expressing a distortion-free image to acquire distorted image data expressing a distorted image having the pixel-number ratio of p×S; and a halftone processing unit configured to execute halftone processing for generating dot data for the distorted image data having the pixel-number ratio of p×S by using a dither matrix so as to generate distorted dot data expressing a distorted dot image having the pixel-number ratio of p×S, wherein a distortion-free dot image is to be obtained by enlarging the distorted dot data in at least the first direction, the distortion-free dot image having the pixel-number ratio S, and wherein a screen angle of the dither matrix is set to be about arctan((tan θ)/p)) when a screen angle in the distortion-free dot image is θ.
    • 一种图像处理装置,包括:改变处理单元,被配置为执行改变处理,以改变表示无失真图像的无失真图像数据的像素数比S,以获取表示具有像素数比的失真图像的失真图像数据 的p×S; 以及半色调处理单元,其被配置为执行半色调处理,用于通过使用抖动矩阵来产生具有像素数比率p×S的失真图像数据的点数据,以便产生表示具有像素像差的点阵图像的失真点数据, 数量比p×S,其中通过在至少第一方向上放大失真的点数据来获得无失真的点图像,具有像素数比S的无失真点图像,并且其中屏幕角度 当无失真点图像中的屏幕角度为θ时,抖动矩阵的设置为约arctan((tan& tt;)/ p))。
    • 24. 发明申请
    • POWER CONVERTER
    • 电源转换器
    • US20130170268A1
    • 2013-07-04
    • US13809589
    • 2011-08-25
    • Ryuji YamadaKazuaki Mino
    • Ryuji YamadaKazuaki Mino
    • H02M7/537
    • H02M7/537H02M1/126H02M7/48H02M7/538H02M7/5387H02M2001/123H02P27/08
    • A motor drive system wherein an LC circuit exists between an inverter and a motor is such that switching of semiconductor switching elements Su to Sw and Sx to Sz configuring the inverter is controlled by an on-signal formed of a first on-signal, a second on-signal, and an off-state period of a time the same as the first on-signal provided between the first on-signal and second on-signal, and by an off-signal formed of a first off-signal, a second off-signal, and an on-state period of a time the same as the first off-signal provided between the first off-signal and second off-signal, and surge voltage applied to an input terminal of the motor is suppressed by the time of the first on-signal and the time of the second off-signal being set to one-sixth of a resonance cycle specific to the LC circuit.
    • 其中在逆变器和电动机之间存在LC电路的电动机驱动系统使得由构成逆变器的半导体开关元件Su至Sw和Sx至Sz的切换由由第一接通信号形成的接通信号控制,第二接通信号 以及与在第一接通信号和第二接通信号之间提供的第一接通信号相同的时间的截止状态时段,以及由第一关闭信号形成的截止信号,第二接通信号 断开信号和与在第一关闭信号和第二关闭信号之间提供的第一关闭信号相同的导通状态时段,并且施加到电动机的输入端子的浪涌电压被抑制了时间 的第一导通信号和第二断开信号的时间被设置为LC电路特有的谐振周期的六分之一。
    • 25. 发明申请
    • INKJET PRINTER AND INK DRYER
    • 喷墨打印机和墨水干燥机
    • US20090322843A1
    • 2009-12-31
    • US12486323
    • 2009-06-17
    • Yoshiki ONOZAWARyuji Yamada
    • Yoshiki ONOZAWARyuji Yamada
    • B41J2/01
    • B41J11/002
    • An inkjet printer includes a plurality of guide walls and a plurality of choke portions. Each of the plurality of guide walls is arranged substantially in parallel with a feeding direction of a medium to provide a guide wall clearance between the plurality of guide walls. The wave guide has a first internal space connected to the guide wall clearance and an electromagnetic-wave supplier and configured to apply the electromagnetic wave to the medium which is introduced into the first internal space. Each of the plurality of choke portions includes a second internal space adjacent to each guide wall and an opening from the second internal space to the guide wall clearance. The second internal space is connected to the first internal space via the guide wall clearance. The second internal space has a length of λ/4 relative to wavelength λ of the electromagnetic wave in the feeding direction.
    • 喷墨打印机包括多个引导壁和多个扼流部分。 多个引导壁中的每一个基本上与介质的进给方向平行地布置,以在多个引导壁之间提供引导壁间隙。 波导具有连接到导向壁间隙的第一内部空间和电磁波供应器,并且被配置为将电磁波施加到被引入到第一内部空间的介质。 多个扼流部分中的每一个包括与每个引导壁相邻的第二内部空间和从第二内部空间到引导壁间隙的开口。 第二内部空间经由引导壁间隙连接到第一内部空间。 第二内部空间相对于馈送方向上的电磁波的波长λ具有λ/ 4的长度。
    • 26. 发明授权
    • Color-conversion-table creating method
    • 颜色转换表创建方法
    • US07626723B2
    • 2009-12-01
    • US11065453
    • 2005-02-25
    • Ryuji YamadaMasaki KondoYasunari Yoshida
    • Ryuji YamadaMasaki KondoYasunari Yoshida
    • G06F15/00G03F3/08H04N1/46G06K9/00
    • H04N1/6058
    • A color-conversion-table creating method includes (a) defining a color gamut in a first color space defined for a first device, the color gamut having a surface, an internal space surrounded by the surface, surface grid points positioned on the surface, and internal grid points positioned in the internal space, and determining a correspondence relationship between the surface grid points in the first color space and parameters in a second color space defined for a second device, (b) determining, based on the correspondence relationship determined in step (a), a correspondence relationship between the internal grid points in the first color space and parameters in the second color space, and (c) creating a color conversion table indicative of a correspondence relationship between all grid points in the first color space and parameters in the second color space based on both the correspondence relationship determined in step (a) and the correspondence relationship determined in step (b).
    • 颜色转换表创建方法包括:(a)在为第一设备定义的第一颜色空间中定义色域,色域具有表面,被表面包围的内部空间,位于表面上的表面网格点, 以及位于所述内部空间中的内部网格点,以及确定所述第一颜色空间中的表面网格点与为第二设备定义的第二颜色空间中的参数之间的对应关系,(b)基于在 步骤(a),第一颜色空间中的内部网格点与第二颜色空间中的参数之间的对应关系,以及(c)创建指示第一颜色空间中的所有网格点之间的对应关系的颜色转换表,以及 基于在步骤(a)中确定的对应关系和步骤(b)中确定的对应关系的第二颜色空间中的参数。