公开(公告)号：US06788480B1

公开(公告)日：2004-09-07

申请号：US10028329

申请日：2001-12-22

申请人： Raffi Codilian ,  William D. Johns

发明人： Raffi Codilian ,  William D. Johns

IPC分类号： G11B502

CPC分类号： G11B5/59633 ,  G11B5/09 ,  G11B27/36 ,  G11B2220/20

摘要： Disk drives are produced having a track density that is determined during a servo-track writing operation. A plurality of calibration tracks is written onto a storage medium of a disk of a head-disk assembly at a calibration track density. The calibration track density corresponds to a portion of a nominal track density profile. An aspect of the servo performance of the head-disk assembly is measured at the calibration tracks. A selected track density profile is identified based on the measured servo performance. The plurality of tracks is written to storage medium at the selected track density profile.

摘要翻译： 产生磁盘驱动器，其具有在伺服磁道写入操作期间确定的磁道密度。 多个校准轨道以校准轨道密度写入头盘组件的盘的存储介质上。 校准轨道密度对应于标称轨道密度分布的一部分。 在校准轨道上测量头盘组件的伺服性能的一个方面。 基于测量的伺服性能来识别选定的轨道密度分布。 多个磁道以选定的磁道密度分布写入存储介质。

公开(公告)号：US06885514B1

公开(公告)日：2005-04-26

申请号：US09920665

申请日：2001-07-31

申请人： Raffi Codilian ,  William D. Johns ,  Charles A. Park ,  David D. Nguyen ,  Jack M Chue

发明人： Raffi Codilian ,  William D. Johns ,  Charles A. Park ,  David D. Nguyen ,  Jack M Chue

IPC分类号： G11B5/596 ,  G11B21/02 ,  G11B27/36 ,  H04R31/00

CPC分类号： G11B5/59633 ,  G11B5/59638 ,  Y10T29/49036

摘要： A method of manufacturing a disk drive and a disk drive made with such method where the width of the read element and the width of the write element are both measured at servo-writing time and the track pitch of the disk drive is set on the basis of those measurements. Disk drives with superior head width combinations are servo-written with a narrower track pitch in order to have a higher storage capacity. Disk drives with inferior head width combinations are detected before servo-writing so that the disk drive may be servo-written with wider track pitch rather than with a nominal track pitch that results in a subsequent drive failure during initial burn-in (IBI). The heads are used more efficiently in that heads that are more capable are used to their ability and less capable heads that would otherwise be disposed of are used at all. Fewer disk drives are required to be reworked and returned to the servo-writing process.

摘要翻译： 一种制造盘驱动器和磁盘驱动器的方法，其中读取元件的宽度和写入元件的宽度均以伺服写入时间测量，并且基于磁盘驱动器的磁道间距设置 的这些测量。 具有优异头宽度组合的磁盘驱动器以较窄的磁道间距进行伺服写入，以具有更高的存储容量。 在伺服写入之前检测到具有较差头部宽度组合的磁盘驱动器，以便磁盘驱动器可以以更宽的磁道间距进行伺服写入，而不是在初始老化（IBI）期间导致后续驱动器故障的标称磁道间距。 头部被更有效地使用在那些使用能力更强的头部，否则将被处理的头部不太可用。 需要重新加工更少的磁盘驱动器并返回到伺服写入过程。

公开(公告)号：US06791782B1

公开(公告)日：2004-09-14

申请号：US10066223

申请日：2002-01-31

申请人： Raffi Codilian ,  William D. Johns ,  Joseph M. Viglione

发明人： Raffi Codilian ,  William D. Johns ,  Joseph M. Viglione

IPC分类号： G11B1546

CPC分类号： G11B5/59611 ,  G11B19/28

摘要： A method and an apparatus select the operational spindle rotation rate for a disk drive based on measured performance of the head-disk assembly. The position error values are measured and analyzed to generate a position error metric. Based on the value of the position error metric, an operational spindle rotation rate is selected for use when the head-disk assembly is combined with a controller to produce a disk drive.

摘要翻译： 一种方法和装置，基于头磁盘组件的测量性能来选择磁盘驱动器的操作主轴旋转速率。 测量和分析位置误差值以产生位置误差度量。 基于位置误差度量的值，当头盘组件与控制器组合以产生磁盘驱动器时，选择操作主轴旋转速率用于使用。

公开(公告)号：US07035026B2

公开(公告)日：2006-04-25

申请号：US10978644

申请日：2004-11-01

申请人： Raffi Codilian ,  William D. Johns ,  Charles A. Park ,  David D. Nguyen ,  Jack M. Chue

发明人： Raffi Codilian ,  William D. Johns ,  Charles A. Park ,  David D. Nguyen ,  Jack M. Chue

IPC分类号： G11B27/36 ,  G11B21/02

CPC分类号： G11B5/59633 ,  G11B5/59638 ,  Y10T29/49036

摘要： A method of manufacturing a disk drive and a disk drive where the width of the read element and the width of the write element are both measured at servo-writing time and the track pitch of the disk drive is set on the basis of those measurements. Disk drives with superior head width combinations are servo-written with a narrower track pitch in order to have a higher storage capacity. Disk drives with inferior head width combinations are detected before servo-writing so that the disk drive may be servo-written with wider track pitch rather than with a nominal track pitch that results in a subsequent drive failure during initial burn-in (IBI). The heads are used more efficiently in that heads that are more capable are used to their ability and less capable heads that would otherwise be disposed of are used at all.

摘要翻译： 基于这些测量，设置在伺服写入时刻测量读取元件的宽度和写入元件的宽度的盘驱动器和盘驱动器的方法，并且基于这些测量来设置磁盘驱动器的磁道间距。 具有优异头宽度组合的磁盘驱动器以较窄的磁道间距进行伺服写入，以具有更高的存储容量。 在伺服写入之前检测到具有较差头部宽度组合的磁盘驱动器，以便磁盘驱动器可以以更宽的磁道间距进行伺服写入，而不是在初始老化（IBI）期间导致后续驱动器故障的标称磁道间距。 头部被更有效地使用在那些使用能力更强的头部，否则将被处理的头部不太可用。

公开(公告)号：US06714372B1

公开(公告)日：2004-03-30

申请号：US09967838

申请日：2001-09-28

申请人： Raffi Codilian ,  William D. Johns

发明人： Raffi Codilian ,  William D. Johns

IPC分类号： G11B1504

CPC分类号： G11B5/59633 ,  G11B5/59638

摘要： A method of manufacturing a disk drive where the width of the read element is measured at servo-writing time in order to establish a write unsafe (WUS) limit corresponding to a maximum distance during writing that the write element is permitted to move radially offtrack from the centerline of a data track before writing is disabled. The method includes the steps of measuring a width of the read element with a servo track writer and determining a write unsafe (WUS) limit based on the data track pitch and the measured width of the read element. Varying the WUS limit on a drive-by-drive basis enhances the performance of some drives that would otherwise have capability that goes unused.

摘要翻译： 一种制造磁盘驱动器的方法，其中在伺服写入时间测量读取元件的宽度，以便建立与写入期间的最大距离相对应的写入不安全（WUS）极限，使得允许写入元件径向地从 写入之前的数据轨道的中心线被禁用。 该方法包括以下步骤：使用伺服轨迹写入器测量读取元件的宽度，并且基于数据轨道间距和读取元件的测量宽度确定写入不安全（WUS）极限。 逐个驱动的基础上改变WUS限制会增强某些驱动器的性能，否则这些驱动器将具有未使用的功能。

公开(公告)号：US08307156B1

公开(公告)日：2012-11-06

申请号：US12952088

申请日：2010-11-22

申请人： Raffi Codilian ,  Gregory B. Thelin

发明人： Raffi Codilian ,  Gregory B. Thelin

IPC分类号： G06F12/00

CPC分类号： G11B5/02 ,  G06F3/061 ,  G06F3/0656 ,  G06F3/0676 ,  G06F12/0866 ,  G11B5/5547

摘要： A rotating media storage device (RMSD) that adaptively modifies pre-read operations is disclosed. The RMSD schedules a pre-read data segment on a second track of disk, commands a movable head to seek to the second track, and if an on-track condition is not met for the scheduled pre-read data segment, modifies the pre-read operation. In one example, modifying the pre-read operation includes canceling the pre-read operation and then performing a read data operation.

摘要翻译： 公开了一种自适应地修改预读操作的旋转介质存储设备（RMSD）。 RMSD在磁盘的第二磁道上调度预读数据段，命令可移动磁头寻找到第二磁道，并且如果调度的预读数据段不符合轨上条件， 读操作。 在一个示例中，修改预读操作包括取消预读操作，然后执行读数据操作。

公开(公告)号：US07274639B1

公开(公告)日：2007-09-25

申请号：US10850850

申请日：2004-05-21

申请人： Raffi Codilian ,  Dalwinder Singh

发明人： Raffi Codilian ,  Dalwinder Singh

IPC分类号： G11B7/00

CPC分类号： G11B20/1883 ,  G11B20/1879 ,  G11B2020/1893 ,  G11B2220/2516

摘要： A disk drive is disclosed comprising a disk having a plurality of data tracks, wherein each data track comprises a plurality of data sectors, and a head is actuated over the disk. A suspect sector list (SSL) stores a plurality of SSL entries, wherein each SSL entry identifies at least one suspect data sector. The disk drive further comprises a disk controller for executing an access command received from a host computer to access at least one of the data sectors. If an error is detected while executing the access command, the disk controller generates an SSL entry having a priority level selected from at least three priority levels and adds the SSL entry to the SSL. A verification operation is executed for each suspect data sector identified by each SSL entry, wherein the SSL entries are processed relative to the priority level assigned to each SSL entry.

摘要翻译： 公开了一种磁盘驱动器，其包括具有多个数据磁道的磁盘，其中每个数据磁道包括多个数据扇区，并且磁头在盘上被致动。 可疑扇区列表（SSL）存储多个SSL条目，其中每个SSL条目标识至少一个可疑数据扇区。 磁盘驱动器还包括盘控制器，用于执行从主计算机接收的访问命令以访问数据扇区中的至少一个。 如果在执行访问命令时检测到错误，则磁盘控制器将生成具有从至少三个优先级中选择的优先级的SSL条目，并将SSL条目添加到SSL。 对由每个SSL条目标识的每个可疑数据扇区执行验证操作，其中相对于分配给每个SSL条目的优先级来处理SSL条目。

公开(公告)号：US07031104B1

公开(公告)日：2006-04-18

申请号：US10137481

申请日：2002-04-30

申请人： Arafat M. Butt ,  Raffi Codilian ,  Kin-Cheok Pong

发明人： Arafat M. Butt ,  Raffi Codilian ,  Kin-Cheok Pong

IPC分类号： G11B33/14 ,  G11B5/54

CPC分类号： G11B5/6005 ,  G11B5/40 ,  G11B33/08 ,  G11B33/14

摘要： A disk drive includes an enclosure, a rotatable disk and an actuator arm, and also includes a plurality of arcuate channels. Airflow is created within the enclosure when the disk rotates. The plurality of arcuate channels facing the disk to decrease the turbulence of the airflow with respect to the actuator arm. The arcuate channels are formed on at least one portion of the enclosure.

摘要翻译： 磁盘驱动器包括外壳，可旋转盘和致动器臂，并且还包括多个弧形通道。 当磁盘旋转时，在外壳内创建气流。 多个弓形通道面对盘以减小气流相对于致动臂的湍流。 弓形通道形成在外壳的至少一部分上。

公开(公告)号：US06930848B1

公开(公告)日：2005-08-16

申请号：US10185932

申请日：2002-06-28

申请人： Raffi Codilian ,  Kamran Oveyssi

发明人： Raffi Codilian ,  Kamran Oveyssi

IPC分类号： G11B19/00 ,  G11B25/04 ,  G11B33/12

CPC分类号： G11B33/122 ,  G11B19/00 ,  G11B25/043

摘要： A mobile host device configured to draw electrical energy from an energy storage device includes a disk drive. The disk drive includes a disk drive enclosure including a base, a spindle motor attached to the base, a disk positioned on the spindle motor, a generator and a charging circuit. The generator may be coupled to the disk drive enclosure and/or the mobile host device and generates electrical energy from the motion of the mobile host device and/or disk drive. The charging circuit is configured to charge the energy storage device using the electrical energy generated by the generator.

摘要翻译： 被配置为从能量存储装置吸取电能的移动主机装置包括磁盘驱动器。 磁盘驱动器包括一个磁盘驱动器机壳，包括一个底座，一个连接到该底座的主轴电机，一个位于主轴电机上的磁盘，一个发电机和一个充电电路。 发电机可以耦合到磁盘驱动器机箱和/或移动主机设备，并且从移动主机设备和/或磁盘驱动器的运动产生电能。 充电电路被配置为使用由发电机产生的电能对能量存储装置充电。

公开(公告)号：US06914743B1

公开(公告)日：2005-07-05

申请号：US09728626

申请日：2000-11-30

申请人： Aswartha Narayana ,  Raffi Codilian ,  Lan V. Ngo

发明人： Aswartha Narayana ,  Raffi Codilian ,  Lan V. Ngo

IPC分类号： G11B5/55 ,  G11B5/596

CPC分类号： G11B5/5582 ,  G11B5/59694

摘要： Disclosed is a disk drive using an accelerometer to sense linear vibration and cancel its effects with an adaptive algorithm during track following. The accelerometer is oriented to detect acceleration associated with torque that tends to cause the actuator to move off-track notwithstanding the efforts of the servo control system. The accelerometer's filtered output is used to modify the control effort. The disk drive uses the position error signal to adaptively filter the accelerometer's output in an effort to mathematically converge on a set of optimal filter coefficients and thereby reduce the effect of vibration that may otherwise impose a torque on the actuator.

摘要翻译： 公开了一种磁盘驱动器，其使用加速度计来感测线性振动并且在跟踪期间利用自适应算法来消除其影响。 加速度计被定向以检测与扭矩相关联的加速度，尽管伺服控制系统的努力，倾向于使致动器移动离开轨道。 加速度计的滤波输出用于修改控制功能。 磁盘驱动器使用位置误差信号来自适应地过滤加速度计的输出，以便在数学上收敛于一组最佳滤波器系数，从而减少否则在致动器上施加扭矩的振动的影响。