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    • 1. 发明授权
    • Rectifier circuit
    • 整流电路
    • US08467212B2
    • 2013-06-18
    • US12951365
    • 2010-11-22
    • Kazuaki MinoSatoru FujitaRyuji Yamada
    • Kazuaki MinoSatoru FujitaRyuji Yamada
    • H02M7/217H02M7/06
    • H02M1/4208H02M1/32Y02B70/126
    • A high power factor rectifier circuit, provided with switching sections connected to an AC power supply for converting an AC voltage to a DC voltage, is formed with a bypass circuit provided. The bypass circuit, when the voltage of the AC power supply becomes higher than the voltage across a smoothing capacitor provided on the DC output side, makes a charge current flowing from the AC power supply to the capacitor bypass the switching section by making the switching section out of conduction. Thus, a rectifier circuit is provided which can be safely operated without causing any damage, or with minimized damage, even though an inrush current flows at turning-on the power or at recovery from a power interruption.
    • 具有连接到用于将AC电压转换为DC电压的AC电源的开关部分的高功率因数整流电路形成有提供的旁路电路。 旁路电路当交流电源的电压变得高于设置在直流输出侧的平滑电容器两端的电压时,使得从交流电源流向电容器的充电电流通过使开关部分 导通。 因此,提供了一种整流电路,其可以安全地操作,而不会造成任何损坏或最小化的损坏,即使在接通电源或从电源中断恢复时涌入电流也是如此。
    • 2. 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。
    • 3. 发明授权
    • Power supply device for use with selectable AC power supply voltage
    • 供电装置,用于选择交流电源电压
    • US08902621B2
    • 2014-12-02
    • US13371193
    • 2012-02-10
    • Ryuji YamadaKazuaki Mino
    • Ryuji YamadaKazuaki Mino
    • H02M7/155H02M7/219H02M7/23H02M1/00
    • H02M7/219H02M7/23H02M2001/007
    • A power supply device that is able to switch between rectifier circuits in accordance with the voltage of a multi-phase AC power supply, and able to accommodate different power supply voltages. The power supply device has rectifier circuits that include a first circuit that rectifies a line voltage of the AC power supply, converting it into a direct current voltage of a first predetermined value, when the voltage of the AC power supply is a predetermined value or less, and a second circuit that rectifies a phase voltage of the AC power supply, converting it into a direct current voltage of a second predetermined value, when the voltage of the alternating current power supply exceeds the predetermined value. The first and second circuits operate in such a way that the AC input current is of the same phase as the voltage of the AC power supply.
    • 一种能够根据多相AC电源的电压在整流电路之间切换并能够适应不同的电源电压的电源装置。 电源装置具有整流电路,其包括:第一电路,对交流电源的线路电压进行整流,将交流电源的电压转换为第一规定值的直流电压时, 以及当所述交流电源的电压超过所述预定值时,对所述交流电源的相电压进行整流,将其转换为第二预定值的直流电压的第二电路。 第一和第二电路以交流输入电流与交流电源的电压相同的方式工作。
    • 4. 发明授权
    • Power converter with surge voltage suppression
    • 功率转换器具有浪涌电压抑制功能
    • US09071166B2
    • 2015-06-30
    • US13809589
    • 2011-08-25
    • Ryuji YamadaKazuaki Mino
    • Ryuji YamadaKazuaki Mino
    • H02M7/5387H02M7/537H02M7/538H02P27/08H02M1/12H02M7/48
    • 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。
    • 5. 发明申请
    • Storage Medium and Control Device
    • 存储介质和控制设备
    • US20140232882A1
    • 2014-08-21
    • US14185973
    • 2014-02-21
    • Ryuji Yamada
    • Ryuji Yamada
    • H04N5/232
    • H04N5/23222G03G15/5079G03G15/55G03G2215/00109G06F11/3013G06F11/3055G06F11/328G06T1/00
    • There is provided a storage medium having a computer program stored thereon and readable by a computer for an imaging terminal including an imaging unit, the program, when executed by the computer, causing the computer to perform operations including: acquiring captured image data generated by imaging a specific region on a target product with the imaging unit, the specific region including display lamps representing a state of the target product; specifying a display state of the display lamps in a captured image by analyzing the captured image data; acquiring identification information for identifying state related information according to the specified display state of the display lamps, the state related information relating to the state of the target product corresponding to the specified display state of the display lamps; acquiring the state related information based on the identification information; and outputting the acquired state related information on the imaging terminal.
    • 提供了一种存储介质,其上存储有计算机程序,并且可由计算机读取用于包括成像单元的成像终端,该程序在由计算机执行时使计算机执行操作,包括:获取通过成像产生的捕获图像数据 具有成像单元的目标产品上的特定区域,所述特定区域包括表示目标产品的状态的显示灯; 通过分析拍摄图像数据来指定拍摄图像中的显示灯的显示状态; 根据所述显示灯的指定显示状态获取用于识别状态相关信息的识别信息,与所述显示灯的指定显示状态相对应的与所述目标产品的状态相关的状态相关信息; 基于所述识别信息获取所述状态相关信息; 并将获取的状态相关信息输出到成像终端。
    • 6. 发明授权
    • Image forming apparatus and image forming system
    • 图像形成装置和图像形成系统
    • US08503035B2
    • 2013-08-06
    • US12551306
    • 2009-08-31
    • Masashi UedaRyuji Yamada
    • Masashi UedaRyuji Yamada
    • H04N1/405
    • G03G15/757H04N1/4055
    • An image forming apparatus comprises an image data generating unit configured to convert a tone of an input value which indicates a density of a pixel by using a predetermined dither matrix and generate image data. The image forming apparatus further comprises a drive source and a gear configured to transmit a drive force from the drive source to an image carrier. The dither matrix includes a plurality of sub-matrixes arranged in a predetermined rule and a dot in each of the plurality of the sub-matrixes grows from a corresponding original point. The image forming apparatus satisfies a relation of (1) a≧0.08 mm and b/a 1.27, where “a” is a travel distance of a printing medium per tooth of the gear in a secondary scanning direction orthogonal to the primary scanning direction, and “b” is a distance between the corresponding original points of a pair of the dots formed on the printing medium apart from each other in the secondary scanning direction on the basis of a pair of the sub-matrixes adjacent to each other in the primary scanning direction in the dither matrix.
    • 图像形成装置包括:图像数据生成单元,被配置为通过使用预定的抖动矩阵来转换表示像素的浓度的输入值的色调,并生成图像数据。 图像形成装置还包括驱动源和被配置为将驱动力从驱动源传输到图像载体的齿轮。 抖动矩阵包括以预定规则排列的多个子矩阵,并且多个子矩阵中的每一个中的点从对应的原始点生长。 图像形成装置满足(a)= 0.08mm和b / a <0.80的关系,或者(2)a <0.08mm和b / a> 1.27,其中“a”是打印介质的行进距离 在与副扫描方向垂直的副扫描方向上的齿轮齿,“b”是在副扫描方向上彼此分开的在打印介质上形成的一对点的相应原点之间的距离, 在抖动矩阵中的主扫描方向上彼此相邻的一对子矩阵的基础。
    • 7. 发明授权
    • Power conversion apparatus
    • 电力转换装置
    • US08432710B2
    • 2013-04-30
    • US12913148
    • 2010-10-27
    • Ryuji Yamada
    • Ryuji Yamada
    • H02M1/12H02M1/14
    • H02M7/217H02M1/12H02M2001/123
    • A power conversion apparatus has a rectification circuit provided for converting AC power supplied from an AC power supply into DC power. The rectification circuit has a configuration in which series circuit whose number corresponds to the number of phases of an input AC are connected in parallel between a positive-side line and a negative-side line. The AC power supply is connected to AC input points, each corresponding to a connection point between a rectifying device and a semiconductor switching device in each of the series circuits, and connected to a point having ground potential through noise suppressing series circuits respectively. In each of the noise suppressing series circuits, a switch unit and a capacitor are connected in series. In this manner, it is possible to provide a power conversion apparatus which can reduce a noise terminal voltage while solving problems in volume and cost simultaneously.
    • 电力转换装置具有整流电路,用于将由交流电源供给的交流电变换为直流电力。 整流电路具有其数量对应于输入AC的相位数的串联电路并联连接在正侧线和负极侧线之间的配置。 交流电源连接到交流输入点,每个交流输入点分别对应于每个串联电路中的整流装置和半导体开关装置之间的连接点,并分别通过噪声抑制串联电路连接到具有接地电位的点。 在每个噪声抑制串联电路中,开关单元和电容器串联连接。 以这种方式,可以提供一种在同时解决体积和成本问题的同时降低噪声终端电压的电力转换装置。
    • 8. 发明授权
    • Image processing device and method for creating binary image data using a single set of dither matrices
    • 使用单组抖动矩阵创建二进制图像数据的图像处理装置和方法
    • US08368961B2
    • 2013-02-05
    • US12683674
    • 2010-01-07
    • Ryuji Yamada
    • Ryuji Yamada
    • H04N1/405
    • H04N1/52H04N1/4058
    • An image processing device includes a storing unit and a creating unit. The storing unit stores a single set of line dither matrices. The single set of line dither matrices includes a first line dither matrix for first color, a second line dither matrix for second color, and a third line dither matrix for third color. Each of the first line dither matrix, the second line dither matrix, and the third line dither matrix includes threshold values that are arranged to make halftone dots grow linearly and including a plurality of n×n sub-matrices. N is set to an integer greater than 1. The first dither matrix has a first screen angle. The second dither matrix has a second screen angle that is different from the first screen angle. The third dither matrix has a third screen angle that is different from the first screen angle and the second screen angle. The creating unit is configured to create binary image data based on input image data using the single set of line dither matrices. A difference between the first screen angle and the second screen angle is set to either one of (π/2−arctan(1/n)) radians and (π/2+arctan(1/n)) radians. A difference between the first screen angle and the third screen angle is set to either one of (π/2−arctan(1/n)) radians and (π/2+arctan(1/n)) radians.
    • 图像处理装置包括存储单元和创建单元。 存储单元存储单组线路抖动矩阵。 单组行抖动矩阵包括用于第一颜色的第一行抖动矩阵,用于第二颜色的第二行抖动矩阵,以及用于第三颜色的第三行抖动矩阵。 第一行抖动矩阵,第二行抖动矩阵和第三行抖动矩阵中的每一个包括被设置为使网版点线性增长并且包括多个n×n个子矩阵的阈值。 N被设置为大于1的整数。第一抖动矩阵具有第一屏幕角度。 第二抖动矩阵具有与第一屏幕角度不同的第二屏幕角度。 第三抖动矩阵具有与第一屏幕角度和第二屏幕角度不同的第三屏幕角度。 创建单元被配置为使用单组线路抖动矩阵来基于输入图像数据创建二值图像数据。 第一屏幕角度和第二屏幕角度之间的差设置为(&pgr / 2-arctan(1 / n))弧度和(&pgr / 2 + arctan(1 / n))弧度中的任一个。 第一屏幕角度和第三屏幕角度之间的差设置为(&pgr / / 2-arctan(1 / n))弧度和(&pgr / 2 + arctan(1 / n))弧度中的任一个。
    • 10. 发明申请
    • IMAGE FORMING APPARATUS CAPABLE OF PREVENTING WASTE OF DEVELOPER
    • 图像形成装置可以防止发展者的废物
    • US20080193154A1
    • 2008-08-14
    • US12027714
    • 2008-02-07
    • Ryuji Yamada
    • Ryuji Yamada
    • G03G15/08
    • G03G15/556G03G15/0856G03G15/0865G03G15/553G03G21/02G03G2215/0888G03G2221/1663
    • A mode setting portion sets a mode to either one of a normal mode in which a developer amount set value T is set to a base developer amount Tbase and a developer-saving mode in which the value T is set to a value smaller than the base developer amount Tbase based on a saving coefficient S. A parameter obtaining portion obtains both a cumulative number of printed sheets Pttl and a developer remaining amount Rt. A determining portion determines in the developer-saving mode whether a first inequality Rt≦Tbase×Sdef×(Pmax−Pttl) is satisfied. A saving-coefficient setting portion sets the saving coefficient S to a default saving coefficient Sdef if the determining portion determines that the first inequality is satisfied, and sets the saving coefficient S to a value satisfying a second inequality Sdef
    • 模式设定部将模式设定为将显影剂量设定值T设定为基准显影剂量Tbase的正常模式和将值T设定为小于基准值的显影剂保存模式 显影剂量Tbase基于保存系数S.参数获取部分获得打印纸张Ptt1和显影剂剩余量Rt的累积数量。 确定部分以显影剂保存模式确定是否满足第一不等式Rt <= Tbase×Sdefx(Pmax-Ptt1)。 如果确定部分确定满足第一不等式,则保存系数设置部分将保存系数S设置为默认保存系数Sdef,并将保存系数S设置为满足第二不等式Sdef