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    • 61. 发明授权
    • Optical pickup apparatus
    • 光拾取装置
    • US08385182B2
    • 2013-02-26
    • US13215787
    • 2011-08-23
    • Yuki KoshimizuHiroyuki Ichikawa
    • Yuki KoshimizuHiroyuki Ichikawa
    • G11B7/00
    • G11B7/1365G11B7/1362G11B7/1376G11B7/13925G11B2007/0013
    • An optical-pickup apparatus includes: a laser diode; an objective lens; a diffraction grating; a photodetector including main-beam-, first-sub-beam-, and second-sub-beam-light-receiving portions; a quarter-wave plate having either a second area allowing a reflected-laser beam to pass therethrough without polarization or a third area allowing the reflected beam to pass therethrough at a polarization angle different from that of the first area; and a polarizing member having a separate-light-amount ratio set therefor with respect to the reflected beams passing through the second or third area and an area excluding the second or third area from the first area, such that proportions of the reflected beams passing therethrough toward the photodetector are different, thereby decreasing an irradiation level when the first- and second-sub-beam-light-receiving portions are irradiated, as stray light, with the reflected beam reflected from either one, not subjected to a signal-reading operation, of the first- and second-signal-recording layers of an optical disc.
    • 一种光拾取装置,包括:激光二极管; 物镜; 衍射光栅; 光检测器,包括主光束,第一子光束和第二副光束光接收部分; 具有允许反射激光束通过而没有偏振的第二区域的四分之一波片或允许反射光束以不同于第一区域的偏振角通过的第三区域; 以及偏振构件,其相对于穿过第二或第三区域的反射光束和从第一区域排除第二或第三区域的区域设定的单独光量比,使得通过其的反射光束的比例 对于光电检测器是不同的,从而当第一和第二副光束受光部分被照射时作为杂散光而使从任何一个反射的反射光束不受信号读取操作的照射水平的降低 的光盘的第一和第二信号记录层。
    • 62. 发明授权
    • Pneumatically operated fluid filled engine mount for vehicles
    • 用于车辆的气动液体填充发动机支架
    • US07025341B2
    • 2006-04-11
    • US10810042
    • 2004-03-26
    • Hiroyuki IchikawaSyouji AkasaMasaaki Hamada
    • Hiroyuki IchikawaSyouji AkasaMasaaki Hamada
    • F16F13/00
    • F16F13/264F16F2230/183
    • A fluid filled engine mount including: a pressure-receiving chamber and an equilibrium chamber connected via a first orifice passage tuned to excite resonance of fluid flowing therethrough to engine shakes; a partition rubber plate partially defining a pressure receiving chamber and tuned to perform absorption of a fluid pressure fluctuation in the pressure-receiving chamber to booming noises; an oscillating chamber connected to the pressure receiving chamber via a second orifice passage tuned to excite resonance of the fluid flowing therethrough to idling vibrations; an oscillating rubber elastic plate having an expansion spring smaller than that of the partition rubber plate and defining the oscillating chamber; a working air chamber applied with air pressure fluctuation with a frequency corresponding to the idling vibration during idling, and to make the working air chamber atmospheric pressure during running.
    • 一种流体填充的发动机支架,包括:压力接收室和经由调节以激励流过其中的流体的共振的发动机振荡的第一孔通道连接的平衡室; 分隔橡胶板部分地限定压力接收室,并且被调谐以将压力接收室中的流体压力波动吸收到兴奋的噪声; 振荡室,其经由调节以激励流过其中的流体的共振以产生空转振动的第二孔通道连接到压力接收室; 振动橡胶弹性板,其具有比分隔橡胶板小的膨胀弹簧并限定振荡室; 工作空气室施加空气压力波动,其频率对应于空转期间的空转振动,并且在运行期间使工作空气室的大气压力。
    • 64. 发明授权
    • Vibration controller for active vibration insulators and method for controlling vibrations for the same
    • 主动振动绝缘子振动控制器及其振动控制方法
    • US07010420B2
    • 2006-03-07
    • US11086389
    • 2005-03-23
    • Hiroyuki IchikawaAtsushi MuramatsuTakayoshi Yasuda
    • Hiroyuki IchikawaAtsushi MuramatsuTakayoshi Yasuda
    • G05D19/00G05B11/36
    • F16F15/03F16F15/02
    • A vibration controller includes a data map storage, a detector, a determiner, a signal generator, and an actuator. The data map storage stores amplitude and/or phase data with respect to torque values of a vehicle engine as a data map in advance. The detector detects actual torque values of the vehicle engine. The determiner determines one of the amplitude and/or phase data with respect to one of the actual torque values based on the data map. The signal generator generates a control signal based on cyclic pulsating signals emitted from the vehicle engine, and updates the amplitude and/or phase of the control signal based on the one of the determined amplitude and/or phase data. The actuator actuates an electromagnetic actuator of an active vibration insulator based on the updated control signal, whereby inhibiting vibrations of the vehicle engine from transmitting by means of vibrating forces exerted by the electromagnetic actuator.
    • 振动控制器包括数据映射存储器,检测器,确定器,信号发生器和致动器。 数据图存储器预先将相对于车辆发动机的转矩值的振幅和/或相位数据作为数据图存储。 检测器检测车辆发动机的实际扭矩值。 确定器基于数据图来确定相对于实际扭矩值之一的振幅和/或相位数据之一。 信号发生器基于从车辆发动机发出的循环脉动信号产生控制信号,并且基于确定的幅度和/或相位数据之一来更新控制信号的幅度和/或相位。 执行器基于更新的控制信号致动主动隔振器的电磁致动器,借此通过由电磁致动器施加的振动力来抑制车辆发动机的振动。
    • 65. 发明申请
    • Method for actuating active vibration insulators
    • 激活主动振动绝缘子的方法
    • US20050248070A1
    • 2005-11-10
    • US11100478
    • 2005-04-07
    • Hiroyuki IchikawaTakayoshi Yasuda
    • Hiroyuki IchikawaTakayoshi Yasuda
    • B60K5/12F16F15/02F16F15/03F16M1/00G05D19/02
    • F16F15/02
    • A method for actuating active vibration insulators includes the steps of generating an idling control signal in an idling range of a vehicle, generating a running control signal in a running range of the vehicle, and actuating an electromagnetic actuator of an active vibration insulator based on the idling control signal or the running control signal, thereby inhibiting vibrations of a vehicle engine from transmitting by the electromagnetic actuator. The idling control signal is produced by adding a higher order harmonic signal component with respect to a control frequency, based on a cyclic pulsating signal emitted from the vehicle engine, to a fundamental-wave signal component of the control frequency. The running control signal is composed of the fundamental-wave signal component of the control signal. The method can inhibit noises from generating by actuating simple electromagnetic actuators, and can damp vibrations of vehicle engines simply and less expensively.
    • 一种用于致动主动隔振器的方法包括以下步骤:在车辆的怠速范围内产生怠速控制信号,在车辆的行驶范围内产生行驶控制信号,并且基于 怠速控制信号或行驶控制信号,从而阻止车辆发动机的振动由电磁致动器传递。 通过基于从车辆发动机发出的循环脉动信号将相对于控制频率的高次谐波信号分量与控制频率的基波信号分量相加来产生怠速控制信号。 运行控制信号由控制信号的基波信号分量组成。 该方法可以通过致动简单的电磁致动器来抑制噪声产生,并且可以简单且较低成本地减轻车辆发动机的振动。