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    Disk drive with closed loop commutator and actuator oscillator
    2.
    发明授权
    Disk drive with closed loop commutator and actuator oscillator 失效
    带闭环换向器和执行器振荡器的磁盘驱动器

    公开(公告)号：US5982571A

    公开(公告)日：1999-11-09

    申请号：US912965

    申请日：1997-06-30

    申请人： Gary W. Calfee ,  David B. Jeppson

    发明人： Gary W. Calfee ,  David B. Jeppson

    IPC分类号： G11B19/04 ,  G11B19/20 ,  G11B21/02

    CPC分类号： G11B21/12 ,  G11B19/2054

    摘要： A disk drive having: (a) at least one data disk; (b) a brushless DC motor coupled to the data disk, the motor having: (i) multiple phase windings arranged as a stator, and (ii) a rotor having a permanent magnet or a DC current excitation winding for rotating the data disk; (c) a transducer for writing data to or reading data from the data disk; (d) a carrier supporting the transducer; (e) a voice coil motor coupled to the carrier for moving the carrier radially across the disk; (f) a drive controller coupled to the brushless DC motor and to the voice coil motor; and (g) a support for supporting the brushless DC motor, the voice coil motor and the drive controller. The drive controller periodically samples the rotor position and then drives the motor by energizing appropriate phase windings in relation to the rotor position that provide maximum forward torque to the rotor. While driving the motor, the drive controller also applies a series of current pulses to the VCM to oscillate the head carrier radially in and out. The combined application of maximum torque to the rotor and oscillation of the head carrier overcomes stiction between the slider and the surface of the disk to rotate the disk.

    摘要翻译： 一种磁盘驱动器，具有：（a）至少一个数据盘; （b）耦合到所述数据盘的无电刷DC电动机，所述电动机具有：（i）作为定子布置的多个相绕组，和（ii）具有用于旋转所述数据盘的永磁体或直流电励磁绕组的转子; （c）用于将数据写入或从数据盘读取数据的换能器; （d）支撑换能器的载体; （e）耦合到所述载体的音圈电机，用于使所述载体径向移动穿过所述盘; （f）连接到无刷直流电动机和音圈电动机的驱动控制器; 和（g）用于支撑无刷直流电动机，音圈电动机和驱动控制器的支撑件。 驱动器控制器周期性地对转子位置进行采样，然后通过相对于向转子提供最大正向转矩的转子位置激励合适的相绕组来驱动电动机。 在驱动电机的同时，驱动控制器还向VCM施加一系列电流脉冲以使头部载体径向振荡。 最大扭矩与转子的组合应用和头架的振动克服了滑块和盘表面之间的静摩擦以旋转盘。

    Digital multi-rate notch filter for sampled servo digital control system
    3.
    发明授权
    Digital multi-rate notch filter for sampled servo digital control system 失效
    数字多速率陷波滤波器，用于采样伺服数字控制系统

    公开(公告)号：US5325247A

    公开(公告)日：1994-06-28

    申请号：US974931

    申请日：1992-11-12

    申请人： Richard M. Ehrlich ,  David B. Jeppson

    发明人： Richard M. Ehrlich ,  David B. Jeppson

    IPC分类号： G11B5/596

    CPC分类号： G11B5/59622

    摘要： A digital servo control loop for a disk drive head position actuator implements a multi-rate notch filter in order to eliminate actuator resonances at frequencies above the sampling rate Nyquist frequency. The control loop includes circuitry responsive to the periodic digital position values sampled from embedded servo sectors which generates and puts out digital control values at the predetermined sampling rate for controlling the position of the actuator means. A digital multi-rate notch filter receives and filters the digital control values, and generates and puts out notch filtered digital control values to the actuator means at a rate comprising an integral multiple of the predetermined sampling rate.

    摘要翻译： 用于盘驱动头位置致动器的数字伺服控制回路实现多速率陷波滤波器，以便在高于采样率奈奎斯特频率的频率处消除致动器谐振。 控制回路包括响应于从嵌入式伺服扇区采样的周期数字位置值的电路，其以预定采样率生成并输出数字控制值，以控制致动器装置的位置。 数字多速率陷波滤波器接收并过滤数字控制值，并以包括预定采样率的整数倍的速率产生并将失真滤波的数字控制值输出到致动器装置。

    Masterless synchronized spindle control for hard disk drives
    4.
    发明授权
    Masterless synchronized spindle control for hard disk drives 失效
    用于硬盘驱动器的无主轴同步主轴控制

    公开(公告)号：US5416648A

    公开(公告)日：1995-05-16

    申请号：US36823

    申请日：1993-03-25

    申请人： David B. Jeppson ,  Benjamin M. Miller

    发明人： David B. Jeppson ,  Benjamin M. Miller

    IPC分类号： G11B19/28 ,  G11B27/10 ,  G11B27/19

    CPC分类号： G11B27/19 ,  G11B19/28 ,  G11B27/10

    摘要： A hard disk drive spindle synchronization method comprises the steps of: sending an index marker pulse generated within each disk drive to mark in time a beginning of each rotation of the disk spindle thereof to a party line to which all drives are connected, rotating the disk spindle at a slightly different rotational velocity than any other drive of the array, monitoring drive pulses present on the spindle reference party line from other disk drives of the plurality to locate a center of gravity of pulse clusters which is within approximately plus or minus one quarter revolution of the drive's own index marker pulse, upon detection of a said center of gravity, ceasing to rotate the disk spindle at a slightly different rotational velocity during a second phase, adjusting the rotational phase of each drive to converge toward the center of gravity until all drive pulses present on the spindle reference party line converge into a single composite marker pulse present on the spindle reference party line, and maintaining convergence of the drive pulses during continuing operations of the disk drives by monitoring the spindle reference party line and making slight phase adjustments of the rotational phase of each drive, thereby phase locking all of the disk spindles of the plurality of hard disk drives to a single composite index marker signal present on the party line.

    摘要翻译： 硬盘驱动器主轴同步方法包括以下步骤：发送在每个磁盘驱动器内产生的索引标记脉冲，以将其盘主轴的每次旋转的开始及时标记到所有驱动器所连接的对象线上，旋转磁盘 主轴与阵列的任何其他驱动器的旋转速度稍微不同，监视主轴参考线上存在于多个其他磁盘驱动器中的驱动脉冲，以定位在大约加或减四分之一内的脉冲簇的重心 驱动器自己的索引标记脉冲的旋转在检测到所述重心时，在第二阶段期间以稍微不同的旋转速度停止旋转盘主轴，调节每个驱动器的旋转相位朝向重心收敛直到 主轴参考线上存在的所有驱动脉冲会聚到主轴上存在的单个复合标记脉冲 并且通过监视主轴参考线并且对每个驱动器的旋转相位进行轻微的相位调节来维持盘驱动器的连续操作期间的驱动脉冲的收敛，从而相位锁定多个盘驱动器中的所有盘轴 硬盘驱动器转到方线上存在的单个复合索引标记信号。

    Removable and transportable hard disk subsystem
    5.
    发明授权
    Removable and transportable hard disk subsystem 失效
    可移动和可移动的硬盘子系统

    公开(公告)号：US5065262A

    公开(公告)日：1991-11-12

    申请号：US585949

    申请日：1990-09-21

    申请人： Richard J. Blackborow ,  Peter S. Hahn ,  Claude E. Camp ,  Donald C. Westwood ,  Rodica Florea ,  Eric J. Botto ,  Scott E. Richmond ,  David B. Jeppson

    发明人： Richard J. Blackborow ,  Peter S. Hahn ,  Claude E. Camp ,  Donald C. Westwood ,  Rodica Florea ,  Eric J. Botto ,  Scott E. Richmond ,  David B. Jeppson

    IPC分类号： G06F1/18 ,  G06F3/06 ,  G11B19/02 ,  G11B25/04 ,  G11B33/08 ,  G11B33/12 ,  G11B33/14

    CPC分类号： G11B33/121 ,  G06F1/18 ,  G06F3/0601 ,  G11B19/02 ,  G11B25/043 ,  G11B33/08 ,  G11B33/14 ,  G06F2003/0692 ,  Y10S360/902 ,  Y10S360/903

    摘要： A removable and transportable hard disk subsystem is provided for use with at least one computer and includes at least one hard disk module. The module contains a shock mounted, thin and compact micro-Winchester head and disk assembly which plugs into a base housing which is installable entirely within a well of the computer nominally allotted to receive a 51/4 inch half height disk drive. The base housing includes a head positioning and data module loading/unloading portion of the subsystem control electronics and an electromechanical mechanism for automatically loading and unloading the hard disk module. The base housing provides electrical connections for operating the head and disk assembly when loaded therein. The subsystem further includes an adapter board having a host interface portion of the subsystem control electronics and connected by a cable with the control electronics portion of the base housing, the adapter board for connecting the subsystem directly to address, data and control buses of said computer to enable storage and retrieval in the loaded module of host computer data blocks.

    摘要翻译： 提供可移动和可运输的硬盘子系统用于与至少一台计算机一起使用并且包括至少一个硬盘模块。 该模块包含一个冲击安装的，薄而紧凑的微型温彻斯特头和盘组件，其插入基座外壳，该底座外壳可完全安装在名义上分配为接收51/4英寸半高的磁盘驱动器的计算机的一个孔中。 基座壳体包括子系统控制电子装置的头部定位和数据模块装载/卸载部分，以及用于自动加载和卸载硬盘模块的机电机构。 底座外壳提供电气连接，用于在装载其中时操作头部和盘组件。 子系统进一步包括适配器板，其具有子系统控制电子设备的主机接口部分，并通过电缆与基座壳体的控制电子部分连接，用于将子系统直接连接到所述计算机的地址，数据和控制总线的适配器板 以在主机数据块的加载模块中实现存储和检索。

    Servo pause for disk drive embedded multi-tasked controller
    6.
    发明授权
    Servo pause for disk drive embedded multi-tasked controller 失效
    磁盘驱动器嵌入式多任务控制器的伺服暂停

    公开(公告)号：US5280603A

    公开(公告)日：1994-01-18

    申请号：US762887

    申请日：1991-09-19

    申请人： David B. Jeppson ,  Norman H. Wulferdinger ,  Bryan J. Mee ,  William N. Thanos ,  Joseph C. Liu

    发明人： David B. Jeppson ,  Norman H. Wulferdinger ,  Bryan J. Mee ,  William N. Thanos ,  Joseph C. Liu

    IPC分类号： G06F3/06 ,  G11B19/02 ,  G11B27/30 ,  G06F3/00

    CPC分类号： G06F3/0601 ,  G11B19/02 ,  G11B27/30 ,  G06F2003/0692

    摘要： A method is provided for allocating digital processing activities of an embedded microcontroller within a disk drive between repetitive periodic digital servo loop service routines synchronized to rotation of a data storage disk of the drive and irregularly occurring host service routines supporting a high level, digital interface to a host computing environment. The new method comprises the steps of:prioritizing the host service routines into priority routines and non-priority routines,detecting calls to one of the priority routines, andbypassing execution of a predetermined number of the servo loop service routines to enable execution of the called priority routine without interruption.

    摘要翻译： 提供了一种方法，用于在与驱动器的数据存储盘的旋转同步的重复周期性数字伺服循环服务程序和支持高级数字接口的不规律出现的主机服务程序之间的盘驱动器内分配嵌入式微控制器的数字处理活动， 主机计算环境。 新方法包括以下步骤：将主机服务例程优先处理为优先级例程和非优先级例程，检测对优先级例程之一的调用，以及绕过预定数量的伺服循环服务程序的执行，以使执行被叫 优先例程不中断。

    Removable and transportable hard disk subsystem
    7.
    发明授权
    Removable and transportable hard disk subsystem 失效
    可移动和可移动的硬盘子系统

    公开(公告)号：US5253129A

    公开(公告)日：1993-10-12

    申请号：US791792

    申请日：1991-11-12

    申请人： Richard J. Blackborow ,  Peter S. Hahn ,  Claude E. Camp ,  Donald C. Westwood ,  Rodica Florea ,  Eric J. Botto ,  Scott E. Richmond ,  David B. Jeppson

    发明人： Richard J. Blackborow ,  Peter S. Hahn ,  Claude E. Camp ,  Donald C. Westwood ,  Rodica Florea ,  Eric J. Botto ,  Scott E. Richmond ,  David B. Jeppson

    IPC分类号： G06F1/18 ,  G06F3/06 ,  G11B19/02 ,  G11B25/04 ,  G11B33/08 ,  G11B33/12 ,  G11B33/14 ,  G11B17/00

    CPC分类号： G11B33/121 ,  G06F1/18 ,  G06F3/0601 ,  G11B19/02 ,  G11B25/043 ,  G11B33/08 ,  G11B33/14 ,  G06F2003/0692

    摘要： A removable and transportable hard disk subsystem is provided for use with at least one computer and includes at least one hard disk module. The module contains a shock mounted, thin and compact micro-Winchester head and disk assembly which plugs into a base housing which is installable entirely within a well of the computer nominally allotted to receive a 51/4 inch half height disk drive. The base housing includes a head positioning and data module loading/unloading portion of the subsystem control electronics and an electromechanical mechanism for automatically loading and unloading the hard disk module. The base housing provides electrical connections for operating the head and disk assembly when loaded therein. The subsystem further includes an adapter board having a host interface portion of the subsystem control electronics and connected by a cable with the control electronics portion of the base housing, the adapter board for connecting the subsystem directly to address, data and control buses of said computer to enable storage and retrieval in the loaded module of host computer data blocks.

    摘要翻译： 提供可移动和可运输的硬盘子系统用于与至少一台计算机一起使用并且包括至少一个硬盘模块。 该模块包含一个冲击安装的，薄而紧凑的微型温彻斯特头和盘组件，其插入基座外壳，该底座外壳可完全安装在名义上分配为接收51/4英寸半高的磁盘驱动器的计算机的一个孔中。 基座壳体包括子系统控制电子装置的头部定位和数据模块装载/卸载部分，以及用于自动加载和卸载硬盘模块的机电机构。 底座外壳提供电气连接，用于在装载其中时操作头部和盘组件。 子系统进一步包括适配器板，其具有子系统控制电子设备的主机接口部分，并通过电缆与基座壳体的控制电子部分连接，用于将子系统直接连接到所述计算机的地址，数据和控制总线的适配器板 以在主机数据块的加载模块中实现存储和检索。

    Hard disk drive having self-written servo burst patterns
    8.
    发明授权
    Hard disk drive having self-written servo burst patterns 有权
    具有自写伺服突发图形的硬盘驱动器

    公开(公告)号：US06519107B1

    公开(公告)日：2003-02-11

    申请号：US09406247

    申请日：1999-09-24

    申请人： Richard M. Ehrlich ,  Jong Lin ,  David B. Jeppson ,  Kenji Oki

    发明人： Richard M. Ehrlich ,  Jong Lin ,  David B. Jeppson ,  Kenji Oki

    IPC分类号： G11B2102

    CPC分类号： G11B5/59688

    摘要： A method for servowriting a magnetic hard disk drive includes servowriting a first servo burst pattern by using a servowriter coupled to a head-disk assembly within a clean room environment, self-writing at least a second servo burst pattern radially offset relative to the first burst pattern by reading the first burst pattern without using the servowriter, and self-writing a final burst pattern by using the first burst pattern and the second burst pattern without using the servowriter. One or more intermediate burst patterns may be provided to accommodate writer/reader offset of dual element read heads in order to produce final product servo burst patterns. A disk drive having embedded servo sectors each including an untrimmed six-burst final servo pattern is also disclosed. The disk drive self-writes at least some of the final servo pattern.

    摘要翻译： 用于伺服磁性硬盘驱动器的方法包括通过使用耦合到洁净室环境中的磁头 - 磁盘组件的伺服引导器来伺服驱动第一伺服脉冲串模式，自动写入相对于第一脉冲串径向偏移的至少第二伺服突发模式 通过在不使用伺服驱动器的情况下读取第一突发图案，并且通过使用第一突发图案和第二突发图案来自写入最终的突发图案而不使用伺服定标器。 可以提供一个或多个中间突发图案以容纳双元件读取头的写入/读取器偏移，以便产生最终产品伺服突发图案。 还公开了一种具有嵌入式伺服扇区的磁盘驱动器，每个磁盘驱动器都包括未修整的六脉冲串最终伺服模式。 磁盘驱动器自写入至少一些最终的伺服模式。