Decoding method and recording-medium reproducing apparatus
    41.
    发明授权
    Decoding method and recording-medium reproducing apparatus 失效
    解码方法和记录介质再现装置

    公开(公告)号:US07234096B2

    公开(公告)日:2007-06-19

    申请号:US10125153

    申请日:2002-04-18

    申请人: Eiji Yamada

    发明人: Eiji Yamada

    摘要: At the preceding stage of a first one of two APP decoders that constitute a turbo decoder, there is provided a logarithmic-likelihood computing circuit that creates and outputs logarithmic likelihoods L(y′i|yi) of a reproduced signal y′i which is soft information. The first APP decoder has an APP decoding function of receiving logarithmic likelihoods L(y′i|yi) of the reproduced signal yi as well as a priori information as to code data c′i, updating the code data c′i and producing outputs of a posteriori probabilities according to trellis diagram information that satisfy constraints concerning an RLL modulation. Turbo decoding becomes compatible with the RLL demodulation, and a turbo decoding with high error-correcting capability is usable in reproducing channel data ai recorded onto a recording medium, which allows a recording density of the recording medium to be increased.

    摘要翻译: 在构成turbo解码器的两个APP解码器中的第一个的前一阶段,提供了一个对数似然计算电路,其创建并输出对数似然度L(y' 作为软信息的再现信号y'i i i i i i i i i i i i i 第一APP解码器具有APP再现功能,该功能将再现信号y i i i i的对数似然度L(y i i i i y y i i i) 以及作为代码数据c'的先验信息,更新代码数据c',并根据满足以下条件的约束的格状图信息产生后验概率的输出 RLL调制。 Turbo解码与RLL解调兼容,并且具有高纠错能力的turbo解码可用于再现记录在记录介质上的信道数据,其允许记录介质的记录密度 增加。

    Fuel vapor treatment device
    44.
    发明申请
    Fuel vapor treatment device 有权
    燃油蒸汽处理装置

    公开(公告)号:US20050172938A1

    公开(公告)日:2005-08-11

    申请号:US10509185

    申请日:2003-07-14

    IPC分类号: F02M25/08 B01D53/02

    CPC分类号: F02M25/0854

    摘要: A fuel vapor treatment device for suppressing emission of fuel vapor from a fuel tank or the like of an automotive vehicle. The fuel vapor treatment device comprises a casing having a charge port connected to a fuel tank, a purge port connected to an intake section of an engine, and an atmospheric air port through which atmospheric air is introduced. Fuel vapor adsorbing material is filled in the casing. Additionally, an adsorbing material cartridge is disposed in a part of the casing and includes a cylindrical cartridge main body section having a cross-sectional area smaller than that of the casing. Fuel vapor adsorbing material is filled in the cartridge main body section. Air introduced from the atmospheric air port is flowable through the inside of the cartridge main body section to the fuel vapor adsorbing material in the casing.

    摘要翻译: 一种用于抑制来自机动车辆的燃料箱等的燃料蒸气的排出的燃料蒸气处理装置。 燃料蒸汽处理装置包括具有连接到燃料箱的充气口,连接到发动机的进气部分的吹扫口和大气引入的大气空气口的壳体。 燃料蒸气吸附材料填充在壳体中。 另外,吸附材料盒设置在壳体的一部分中,并且包括具有小于壳体的横截面面积的圆柱形盒主体部分。 燃料蒸汽吸附材料填充在盒主体部分中。 从大气空气引入的空气可以通过盒主体部分的内部流到壳体中的燃料蒸气吸附材料。

    Drive control apparatus and method of alternating current motor
    46.
    发明授权
    Drive control apparatus and method of alternating current motor 失效
    交流电机驱动控制装置及方法

    公开(公告)号:US06781333B2

    公开(公告)日:2004-08-24

    申请号:US10143020

    申请日:2002-05-13

    IPC分类号: H02P700

    摘要: A drive control apparatus and method drives an AC motor by applying a rectangular wave voltage thereto. The apparatus estimates the torque of a rotor of the AC motor, and detects a torque deviation which is the difference between the estimated torque and a required torque of the motor. A controller controls a state of the rectangular wave voltage applied to the AC motor, through torque feedback control based on the torque deviation, so that the torque approaches the torque command value. The controller detects a current rotation speed of the motor, and switches, in a predetermined order, a plurality of predetermined rectangular wave voltage states corresponding to different phase values of the rectangular wave voltage. The switching timing of the rectangular wave voltage states is set to a timing that deviates from a reference timing determined based on the current rotation speed, by a length of time corresponding to the torque deviation.

    摘要翻译: 驱动控制装置和方法通过向其施加矩形波电压来驱动AC电动机。 该装置估计交流电动机的转子的转矩,并且检测作为该电动机的推定转矩与所需转矩之差的转矩偏差。 控制器通过基于扭矩偏差的转矩反馈控制来控制施加到AC电动机的矩形波电压的状态,使得转矩接近转矩指令值。 控制器检测电动机的当前转速,并且以预定顺序切换与矩形波电压的不同相位值对应的多个预定矩形波电压状态。 矩形波电压状态的切换定时被设定为与基于当前转速确定的基准定时相对应于扭矩偏差的时间长度的定时。

    Optical pickup device
    47.
    发明授权
    Optical pickup device 失效
    光学拾取装置

    公开(公告)号:US06730896B1

    公开(公告)日:2004-05-04

    申请号:US09577905

    申请日:2000-05-24

    申请人: Eiji Yamada

    发明人: Eiji Yamada

    IPC分类号: G02B900

    摘要: In an optical pickup device, an objective lens unit includes a first lens, a second lens for converging a light beam which passed through the first lens on an information recording layer of a recording medium, and a second-lens-driving-use actuator for adjusting the distance between the first and second lenses. The second lens has a reflecting section for reflecting an outer part of the light beam which passed through the first lens and reached the second lens. Moreover, the optical pickup device includes a condenser lens, a cylindrical lens and a light receiving element for detecting a reflected light beam reflected by the reflecting section, and a control device for detecting the distance between the first and second lenses according to the result of detection and for controlling the second-lens-driving-use actuator according to the result of detection. With this structure, the occurrence of spherical aberration due to an error in the thickness of a cover glass of the recording medium and variations in the thickness of the objective lens is limited.

    摘要翻译: 在光学拾取装置中,物镜单元包括第一透镜,用于将通过第一透镜的光束会聚在记录介质的信息记录层上的第二透镜,以及第二透镜驱动用致动器 调整第一和第二透镜之间的距离。 第二透镜具有用于反射穿过第一透镜并到达第二透镜的光束的外部的反射部分。 此外,光拾取装置包括聚光透镜,柱面透镜和用于检测由反射部反射的反射光束的光接收元件,以及用于根据第一和第二透镜的结果来检测第一和第二透镜之间的距离的控制装置 检测和根据检测结果控制第二透镜驱动用致动器。 利用这种结构,由于记录介质的盖玻片的厚度误差和物镜的厚度的变化引起的球面像差的发生受到限制。

    Electric motor having heat radiator at electric connection with inverter
    50.
    发明授权
    Electric motor having heat radiator at electric connection with inverter 失效
    电动机具有与变频器电连接的散热器

    公开(公告)号:US5814909A

    公开(公告)日:1998-09-29

    申请号:US492136

    申请日:1995-06-19

    CPC分类号: H02K11/33

    摘要: Electric motor coils are electrically connected to a power device in an inverter. A conductor for supplying a drive current to the motor coils includes a heat radiating area or other heat radiating member in the wiring path. Thus, the heat from the electric motor is radiated from the conductor in the wiring path. The power device and other components of the inverter can be prevented from being thermally damaged or degraded by the heat transmitted from the motor coils to the inverter through the conductor having higher heat conductivity.

    摘要翻译: 电动机线圈电连接到逆变器中的功率器件。 用于向电动机线圈供给驱动电流的导体包括布线路径中的散热区域或其他散热构件。 因此,来自电动机的热量从布线路径中的导体辐射。 通过具有较高导热性的导体,可以防止逆变器的功率器件和其他部件受到由马达线圈传递到逆变器的热量的热损伤或劣化。