公开(公告)号：US08824094B1

公开(公告)日：2014-09-02

申请号：US14057641

申请日：2013-10-18

申请人： HGST Netherlands B.V.

发明人： Jeffrey L. Furlong ,  Toshiki Hirano ,  Tatsuo Nakamoto

IPC分类号： G11B17/038

CPC分类号： G11B17/021 ,  G11B5/4886 ,  G11B5/5569 ,  G11B5/5573 ,  G11B5/5578 ,  G11B25/043

摘要： A lower cost per unit of storage hard disk drive (HDD) includes multiple disk stacks and a head stack assembly (HSA) movably coupled to a rail for accessing magnetic-recording disks of each of the multiple disk stacks. Such an HDD may include multiple columns of linearly-arranged disk stacks with an HSA corresponding to each column, where the disk stacks on each side of the rail are positioned for asynchronous access by the HSA, and may include multiple HSAs coupled to the rail, where the disk stacks on each side of the rail are positioned for simultaneous access by respective HSAs being moved either synchronously or independently.

摘要翻译： 每单位存储硬盘驱动器（HDD）的较低成本包括多个磁盘堆栈和可移动地耦合到轨道的磁头堆栈组件（HSA），用于访问每个多个磁盘堆栈的磁记录磁盘。 这样的HDD可以包括具有对应于每列的HSA的多列线性布置的磁盘堆栈，其中轨道的每一侧上的磁盘堆叠被定位成用于HSA的异步访问，并且可以包括耦合到轨道的多个HSA， 其中轨道的每一侧上的盘堆叠被定位成用于通过同步或独立地移动的相应HSA的同时访问。

公开(公告)号：US20120170155A1

公开(公告)日：2012-07-05

申请号：US12981254

申请日：2010-12-29

申请人： Teruhiro Nakamiya ,  Keiko Watanabe ,  Toshihiko Shimizu ,  Noritaka Ootake ,  Takeji Sumiya ,  Takashi Tomita ,  Takahisa Okada

发明人： Teruhiro Nakamiya ,  Keiko Watanabe ,  Toshihiko Shimizu ,  Noritaka Ootake ,  Takeji Sumiya ,  Takashi Tomita ,  Takahisa Okada

IPC分类号： G11B21/16 ,  G11B5/56

CPC分类号： G11B5/5573 ,  G11B5/4833

摘要： A magnetic disk device including a disk, a spindle motor, a base for supporting the spindle motor and the disk, a slider includes a head element. The device also includes an actuator including arms for supporting the slider and a coil of a voice coil motor for rotating the arms, wherein a first natural bending frequency of the coil is less than a first natural bending frequency of the arms.

摘要翻译： 一种磁盘装置，包括盘，主轴电机，用于支撑主轴电机和盘的底座，滑块包括头元件。 该装置还包括具有用于支撑滑动件的臂和用于旋转臂的音圈电机的线圈的致动器，其中线圈的第一自然弯曲频率小于臂的第一自然弯曲频率。

公开(公告)号：US08189298B1

公开(公告)日：2012-05-29

申请号：US12163815

申请日：2008-06-27

申请人： Yu-Min Lee ,  Arman V. Golgolab ,  Jian Yang

发明人： Yu-Min Lee ,  Arman V. Golgolab ,  Jian Yang

IPC分类号： G11B5/55

CPC分类号： G11B5/5573

摘要： A C-shaped bobbin includes a bobbin base member adjacent and attached to a first lateral leg of an actuator coil. A bobbin recess, adjacent the bobbin base member, separates first and second bobbin wings. The first and second bobbin wings define first and second wing lengths measured parallel to first and second longitudinal legs of the coil, respectively, and also define first and second wing widths measured normal to the first and second longitudinal legs, respectively. The bobbin recess defines a recess depth measured normal to the first lateral leg, and defines a recess width measured parallel to the first lateral leg. Each of the first and second wing lengths is less than the length of the longitudinal legs. The recess depth is at least half a base member width. The recess width is at least twice the first wing width and/or the second wing width.

摘要翻译： C形绕线架包括与致动器线圈的第一侧腿相邻并附接的绕线筒基座。 与梭芯基部件相邻的绕线筒凹槽分离第一和第二线轴架。 第一和第二梭骨架分别限定平行于线圈的第一和第二纵向腿部测量的第一和第二翼长度，并且还分别限定垂直于第一和第二纵向腿部测量的第一和第二翼部宽度。 梭心凹槽限定了垂直于第一侧腿测量的凹陷深度，并且限定了平行于第一侧腿测量的凹陷宽度。 第一和第二翼长中的每一个都小于纵向腿的长度。 凹陷深度至少为基础构件宽度的一半。 凹槽宽度至少是第一机翼宽度和/或第二机翼宽度的两倍。

公开(公告)号：US12020733B2

公开(公告)日：2024-06-25

申请号：US17723263

申请日：2022-04-18

申请人： Western Digital Technologies, Inc.

发明人： Niranjay Ravindran ,  Weldon M. Hanson ,  Hiroyasu Masuda ,  David T. Flynn ,  Zarko Popov

IPC分类号： G11B5/55

CPC分类号： G11B5/556 ,  G11B5/5573 ,  G11B5/5586

摘要： Various illustrative aspects are directed to a data storage device comprising data tracks N and N−1, and one or more processing devices, configured to identify, during a track write on the data track N, a write abort event based upon an expected risk for the data track N−1 exceeding a risk threshold, read one or more sectors of the data track N−1 and collect one or more corresponding sector metrics, verify the one or more sectors based upon the collected sector metrics, wherein the verifying comprises assigning each of the one or more sectors as one of a readable or a non-readable sector, and continue the track write on the data track N upon determining each of the one or more sectors is a readable sector, or recovering and relocating the data track N−1 based on determining at least one of the sectors is a non-readable sector.

公开(公告)号：US11817133B2

公开(公告)日：2023-11-14

申请号：US17652984

申请日：2022-03-01

申请人： Kabushiki Kaisha Toshiba ,  Toshiba Electronic Devices & Storage Corporation

发明人： Kimiyasu Aida ,  Kazuya Takada

IPC分类号： G11B5/02 ,  G11B5/55 ,  G06F3/06 ,  G11B20/18 ,  G11B27/36

CPC分类号： G11B5/02 ,  G06F3/0604 ,  G06F3/0656 ,  G06F3/0676 ,  G11B5/5573 ,  G11B27/36 ,  G11B2020/1826 ,  G11B2220/2508

摘要： According to one embodiment, a magnetic disk device incudes a first magnetic disk, a first actuator that reads/writes data from/to the first magnetic disk, a first controller that controls the first actuator, a second magnetic disk, a second actuator that reads/writes data from/to the second magnetic disk, a second controller that controls the second actuator, wherein the first controller executes read/write processing, and the second controller stores trace data of the read/write processing when the first controller executes the read/write processing.

公开(公告)号：US11798587B1

公开(公告)日：2023-10-24

申请号：US17693626

申请日：2022-03-14

申请人： Western Digital Technologies, Inc.

发明人： Guoxiao Guo ,  Jianbin Nie ,  Triet Tieu ,  Duc H. Banh ,  Tianyu Jiang

IPC分类号： G11B5/55

CPC分类号： G11B5/5543 ,  G11B5/5565 ,  G11B5/5573

摘要： Various illustrative aspects are directed to a data storage device comprising: a voice coil motor (VCM) and one or more processing devices, configured to actuate the VCM, switch on measuring a back electromotive force (BEMF) from the VCM for intervals of an initial BEMF measurement that are free of spikes in the initial BEMF measurement, and process a measured BEMF signal from the intervals of the initial BEMF measurement that are free of spikes in a change of current term of the initial BEMF measurement.

公开(公告)号：US20170309304A1

公开(公告)日：2017-10-26

申请号：US15509909

申请日：2015-10-02

申请人： Agency For Science, Technology And Research

发明人： Chye Chin TAN ,  Ming Chou LIN

IPC分类号： G11B5/55

CPC分类号： G11B5/5565 ,  G11B5/5573 ,  G11B5/5578

摘要： An actuator assembly for crosstalk reduction in hard disk drives (HDDs) is provided. The actuator assembly comprises a base plate; a pivot; a voice coil motor (VCM) with an upper yoke and a lower yoke; and a cut-out insert having a predetermined stiffness and predetermined magnetic properties, wherein the cut-out insert corresponds to a cut-out recess of the base plate, and wherein the lower yoke of the VCM and the pivot are coupled to the cut-out insert.

公开(公告)号：US09093094B2

公开(公告)日：2015-07-28

申请号：US14095819

申请日：2013-12-03

申请人： HGST Netherlands B.V.

发明人： Kouki Uefune ,  Takenori Atsumi ,  Hajime Eguchi ,  Shigenori Takada

IPC分类号： G11B5/55 ,  G11B5/48

CPC分类号： G11B5/5573 ,  G11B5/4833 ,  G11B5/55

摘要： Approaches to a rotary actuator assembly configured for use in a hard disk drive (HDD) include a voice coil interleaved between the pivot bearing and the actuator arm, providing a longer pivot-to-head dimension which reduces the radius of curvature of the arc in which the head slider travels over the disk for accessing portions of the disk. Reducing the arc radius of curvature reduces the maximum skew angles of the read-write head in association with the disk tracks. The width of the actuator arm can be widened to provide improved operating characteristics even in view of the longer pivot-to-head dimension.

摘要翻译： 配置用于硬盘驱动器（HDD）的旋转致动器组件的方法包括交替在枢转轴承和致动器臂之间的音圈，提供更长的枢转到头部的尺寸，其减小了弧的曲率半径 磁头滑块在磁盘上行进以访问磁盘的部分。 减小曲率半径减小与磁盘轨迹相关联的读写头的最大倾斜角度。 即使考虑到较长的枢轴对头尺寸，致动器臂的宽度可以加宽以提供改进的操作特性。

公开(公告)号：US20150138674A1

公开(公告)日：2015-05-21

申请号：US14081872

申请日：2013-11-15

申请人： HGST Netherlands B.V.

发明人： Manoj B. Keshavan

IPC分类号： G11B5/55 ,  H02K41/035 ,  H02K33/16

CPC分类号： G11B5/5565 ,  G11B5/5573 ,  G11B5/5582 ,  H02K33/16 ,  H02K41/0358

摘要： Approaches to improving actuator settle time by damping vibrations resulting from coil modes, such as with a voice coil actuator in a hard disk drive, include a single-piece damper plate coupled to the voice coil actuator yoke. The damper plate may be a single U-shaped piece of metal that covers the area of the yoke that experiences the maximum strain energy during operation, between the voice coil and the pivot bearing housing.

摘要翻译： 通过阻止由线圈模式产生的振动来提高致动器稳定时间的方法，例如在硬盘驱动器中的音圈致动器，包括耦合到音圈致动器轭的单片阻尼板。 阻尼板可以是覆盖在操作期间在音圈和枢转轴承壳体之间经受最大应变能的轭的区域的单个U形金属片。

公开(公告)号：US08958172B1

公开(公告)日：2015-02-17

申请号：US14056846

申请日：2013-10-17

申请人： HGST Netherlands B.V.

发明人： Ulrich Georg Hansen

IPC分类号： G11B17/038

CPC分类号： G11B25/043 ,  G11B5/4886 ,  G11B5/5573

摘要： A lower cost per unit of storage hard disk drive (HDD) includes multiple disk stacks and a single head stack assembly for accessing the magnetic-recording disks of each of the multiple disk stacks asynchronously.

摘要翻译： 每单位存储硬盘驱动器（HDD）的较低成本包括多个磁盘堆栈和用于异步访问每个多个磁盘堆栈的磁记录磁盘的单个磁头堆栈组件。