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70 条记录 (耗时 0.032 秒)

    Method and apparatus for adaptive feedforward cancellation
    1.
    发明授权
    Method and apparatus for adaptive feedforward cancellation 有权
    用于自适应前馈消除的方法和装置

    公开(公告)号：US06487035B1

    公开(公告)日：2002-11-26

    申请号：US09467989

    申请日：1999-12-20

    申请人： Xiong Liu ,  Joseph C. Liu ,  Kevin A. Gomez ,  Mingzhong Ding

    发明人： Xiong Liu ,  Joseph C. Liu ,  Kevin A. Gomez ,  Mingzhong Ding

    IPC分类号： G11B5596

    CPC分类号： G11B5/59605 ,  G11B21/085

    摘要： A method and apparatus are provided for generating an adaptive feedforward cancellation signal for a next sector of a disc in a disc drive. The cancellation signal includes at least one tap weight multiplied by at least one trigonometric function. To form the cancellation signal, the method and apparatus first determine a servo loop transfer function relative to a feedforward cancellation component in the disc drive. The transfer function is then inverted to form filter parameters. A position error value is then measured for a current signal and is passed through a filter formed from the filter parameters. This creates a filtered position error value that is used with the tap weights of a current sector to determine the tap weights for the cancellation signal of the next sector.

    摘要翻译： 提供了一种用于为盘驱动器中的盘的下一扇区产生自适应前馈消除信号的方法和装置。 消除信号包括乘以至少一个三角函数的至少一个抽头权重。 为了形成消除信号，该方法和装置首先确定相对于盘驱动器中的前馈消除部件的伺服环路传递函数。 然后将传递函数反转以形成滤波器参数。 然后测量当前信号的位置误差值，并通过由滤波器参数形成的滤波器。 这产生了与当前扇区的抽头权重一起使用的滤波位置误差值，以确定下一扇区的消除信号的抽头权重。

    Shock absorber capable of damping vibration
    2.
    发明授权
    Shock absorber capable of damping vibration 有权
    减振器能够减震

    公开(公告)号：US08702073B2

    公开(公告)日：2014-04-22

    申请号：US11749850

    申请日：2007-05-17

    申请人： JuiJing Lim ,  Chenyang Ding ,  Xiong Liu ,  MingZhong Ding ,  KianKeong Ooi ,  ChoonKiat Lim

    发明人： JuiJing Lim ,  Chenyang Ding ,  Xiong Liu ,  MingZhong Ding ,  KianKeong Ooi ,  ChoonKiat Lim

    IPC分类号： F16M1/00 ,  F16M13/00

    CPC分类号： G11B33/08

    摘要： A shock absorber is provided that also includes vibration damping. The shock absorber includes at least one shock absorbing frame member that partially surrounds an electronic device enclosure. The shock absorber also includes at least two protrusions that protrude from the at least one shock absorbing frame member. Each protrusion extends beyond the at least one shock absorbing frame member from a recessed surface recessed into the at least one shock absorbing frame member.

    摘要翻译： 还提供一种减震器，还包括减震。 减震器包括部分地围绕电子设备外壳的至少一个减震框架构件。 减震器还包括从至少一个减震框架构件突出的至少两个突起。 每个突起从凹入到所述至少一个减震框架构件的凹入表面延伸超过所述至少一个减震框架构件。

    Shock Absorber Capable of Damping Vibration
    5.
    发明申请
    Shock Absorber Capable of Damping Vibration 有权
    减振器能够进行阻尼振动

    公开(公告)号：US20080284074A1

    公开(公告)日：2008-11-20

    申请号：US11749850

    申请日：2007-05-17

    申请人： JuiJing Lim ,  Chenyang Ding ,  Xiong Liu ,  MingZhong Ding ,  KianKeong Ooi ,  ChoonKiat Lim

    发明人： JuiJing Lim ,  Chenyang Ding ,  Xiong Liu ,  MingZhong Ding ,  KianKeong Ooi ,  ChoonKiat Lim

    IPC分类号： F16F7/00 ,  H05K7/00

    CPC分类号： G11B33/08

    摘要： A shock absorber is provided that also includes vibration damping. The shock absorber includes at least one shock absorbing frame member that partially surrounds an electronic device enclosure. The shock absorber also includes at least two protrusions that protrude from the at least one shock absorbing frame member. Each protrusion extends beyond the at least one shock absorbing frame member from a recessed surface recessed into the at least one shock absorbing frame member.

    摘要翻译： 还提供一种减震器，还包括减震。 减震器包括部分地围绕电子设备外壳的至少一个减震框架构件。 减震器还包括从至少一个减震框架构件突出的至少两个突起。 每个突起从凹入到所述至少一个减震框架构件的凹入表面延伸超过所述至少一个减震框架构件。

    Variable track densities on a recording medium to compensate for non-repeatable runout (NRRO) error
    7.
    发明授权
    Variable track densities on a recording medium to compensate for non-repeatable runout (NRRO) error 有权
    记录介质上的可变磁道密度，以补偿不可重复的跳动（NRRO）错误

    公开(公告)号：US06765737B1

    公开(公告)日：2004-07-20

    申请号：US09519910

    申请日：2000-03-07

    申请人： Choonkiat Lim ,  Xiong Liu ,  Joseph Cheng-Tsu Liu ,  Kevin A. Gomez

    发明人： Choonkiat Lim ,  Xiong Liu ,  Joseph Cheng-Tsu Liu ,  Kevin A. Gomez

    IPC分类号： G11B509

    CPC分类号： G11B5/012 ,  G11B5/59627

    摘要： A disc drive includes a base and a disc rotatably attached to the base. The disc has an inner diameter and an outer diameter and a plurality of tracks. Information is written on the plurality of tracks. The plurality of tracks are written at a variable track pitch. The tracks positioned near the outer diameter are wider in pitch than the tracks positioned near the inner diameter. The plurality of tracks further include a first group of tracks written at a first track pitch, and a second group of tracks written at a second track pitch. The track pitch of each of the first group and the second group of tracks is selected such that the percentage of track misregistration for each group will be substantially the same. This method provides a means to increase storage capacity for a predetermined track misregistration budget.

    摘要翻译： 盘驱动器包括基座和可旋转地附接到基座的盘。 盘具有内径和外径以及多个轨道。 信息写在多个轨道上。 以可变轨道间距写入多个轨迹。 位于外径附近的轨道的间距比位于内径附近的轨道宽。 多个轨道还包括以第一轨道间距写入的第一组轨道和以第二轨道间距写入的第二组轨道。 选择第一组和第二组轨道中的每一个的轨道间距，使得每个组的轨道重合失调的百分比将基本相同。 该方法提供了一种增加预定轨道重合不足预算的存储容量的方法。

    Method and apparatus for reducing track misregistration from servo track writing
    8.
    发明授权
    Method and apparatus for reducing track misregistration from servo track writing 失效
    用于减少伺服轨迹写入轨迹偏移的方法和装置

    公开(公告)号：US06476995B1

    公开(公告)日：2002-11-05

    申请号：US09483525

    申请日：2000-01-14

    申请人： Xiong Liu ,  Joseph Cheng-Tsu Liu ,  Kevin A. Gomez ,  Choonkiat Lim

    发明人： Xiong Liu ,  Joseph Cheng-Tsu Liu ,  Kevin A. Gomez ,  Choonkiat Lim

    IPC分类号： G11B2102

    CPC分类号： G11B5/5521 ,  G11B5/4813 ,  G11B5/5582 ,  G11B5/59627 ,  G11B5/59633 ,  G11B5/59638

    摘要： An HDA includes a base, a disc stack coupled to a spindle rotatably attached to the base by a spindle shaft and spindle bearing. An actuator assembly is pivotally attached to the base at a pivot shaft. Attached to one end of the actuator assembly proximal the disc stack is one or more transducers for reading/writing information from/to the discs. A servo writer includes a controller for moving the actuator during the servo writing process. The controller moves the servo writer at the cage frequency of the spindle bearing to lessen the relative motion between the transducer head and the disc as the servo information is written to the disc. The controller also may be programmed to move the transducer at both the spindle rotation frequency and the cage frequency of the spindle bearing to lessen the relative motion between the transducer and the disc during the servo writing process.

    摘要翻译： HDA包括底座，联接到通过主轴和主轴轴承可旋转地附接到基座的心轴的盘组。 致动器组件在枢轴处枢转地附接到基座。 靠近盘片组件的致动器组件的一端附接有用于从/向盘读/写信息的一个或多个换能器。 伺服写入器包括用于在伺服写入过程中使致动器移动的控制器。 当伺服信息写入光盘时，控制器将伺服写卡机以主轴轴承的笼式频率移动，以减小换能器头与盘之间的相对运动。 控制器还可以被编程为在主轴转动频率和主轴轴承的保持架频率下移动换能器，以在伺服写入过程期间减小换能器和盘之间的相对运动。