公开(公告)号：US20120002314A1

公开(公告)日：2012-01-05

申请号：US12827752

申请日：2010-06-30

申请人： Lidu Huang ,  Fu-Ying Huang ,  Tetsuo Semba

发明人： Lidu Huang ,  Fu-Ying Huang ,  Tetsuo Semba

IPC分类号： G11B27/36 ,  G11B33/14

CPC分类号： G11B5/59627 ,  G11B5/5565 ,  G11B33/144

摘要： A HDD comprising a temperature sensor disposed inside the HDD configured to periodically measure temperature inside of said hard disk drive; a magnetic disk; a read head; a write head; memory for storing RWO data. The RWO data is a function of a distance between the read head and the write head. The HDD also includes a RWO data adjustor configured to adjust the RWO data in response to a change in temperature of the HDD to compensate for a change in the distance between the read head and the write head based on the change in temperature.

摘要翻译： 一种HDD，包括设置在所述HDD内部的温度传感器，所述温度传感器被配置为周期性地测量所述硬盘驱动器内部的温度; 磁盘 读头; 写头; 用于存储RWO数据的存储器。 RWO数据是读取头和写入头之间的距离的函数。 HDD还包括RWO数据调整器，其被配置为响应于HDD的温度变化来调整RWO数据，以补偿基于温度变化的读取头和写入头之间的距离的变化。

公开(公告)号：US06614613B1

公开(公告)日：2003-09-02

申请号：US09526261

申请日：2000-03-16

申请人： Fu-Ying Huang ,  Naoyuki Kagami ,  Tetsuo Semba ,  Eiji Soga ,  Shingo Tsuda

发明人： Fu-Ying Huang ,  Naoyuki Kagami ,  Tetsuo Semba ,  Eiji Soga ,  Shingo Tsuda

IPC分类号： G11B2110

CPC分类号： G05D19/02 ,  G11B5/10 ,  G11B5/5582 ,  G11B5/59627

摘要： An active control mechanism and method for stabilizing a servo-controlled actuator system such as an actuator system in a data recording disk drive by compensating the vibrational modes of the actuator's arm assembly. The control mechanism has a sensing arrangement which can include one or more individual sensors attached to the actuator at locations where they generate signals in phase with the vibrational modes, and especially with all the low-frequency major vibrational modes, of the arm assembly. A control mechanism derives from the signals an adjustment signal consisting of three corrective terms—a stiffening correction, an active damping correction, and an inertia correction by a phase correction. Furthermore, high-frequency out-of-phase modes can be stabilized by appropriately shifting the phase of the signals. The adjustment signal is used in the feedback control loop to stabilize the actuator system.

摘要翻译： 一种主动控制机构和方法，用于通过补偿致动器臂组件的振动模式来稳定伺服控制致动器系统，例如数据记录盘驱动器中的致动器系统。 控制机构具有感测装置，其可以包括一个或多个单独的传感器，其附接到致动器的位置，在那里它们与臂组件的振动模式，特别是与所有低频主要振动模式相同地产生信号。 控制机构从信号中获得由三个校正项组成的调整信号 - 加强校正，主动阻尼校正和通过相位校正的惯性校正。 此外，可以通过适当地移位信号的相位来稳定高频异相模式。 调节信号用于反馈控制回路以稳定执行器系统。

公开(公告)号：US08724248B2

公开(公告)日：2014-05-13

申请号：US13306736

申请日：2011-11-29

申请人： Abhishek Dhanda ,  Toshiki Hirano ,  Tetsuo Semba ,  Zvonimir Z. Bandic

发明人： Abhishek Dhanda ,  Toshiki Hirano ,  Tetsuo Semba ,  Zvonimir Z. Bandic

IPC分类号： G11B21/02

CPC分类号： G11B5/59627 ,  G11B5/59694 ,  G11B20/1217 ,  G11B2020/1228 ,  G11B2020/1238 ,  G11B2220/2516

摘要： A method, apparatus and a data storage device are provided for implementing data track pitch adjustment for data written on a recordable surface of a storage device under operational vibration conditions. An operational vibration disturbance spectrum is detected during a write operation and the data track pitch is selectively adjusted based on the detected operational vibration disturbance spectrum. The adjusted track pitch information is saved and used during a read operation.

摘要翻译： 提供了一种方法，装置和数据存储装置，用于在操作的振动条件下为存储装置的可记录表面上写入的数据实现数据轨道间距调整。 在写入操作期间检测到操作的振动干扰频谱，并且基于检测到的操作振动干扰谱选择性地调整数据轨道间距。 调整后的音高信息在读取操作期间被保存和使用。

公开(公告)号：US08665549B2

公开(公告)日：2014-03-04

申请号：US13249041

申请日：2011-09-29

申请人： Thomas R. Albrecht ,  Toshiki Hirano ,  Tetsuo Semba ,  Xiaotian Sun

发明人： Thomas R. Albrecht ,  Toshiki Hirano ,  Tetsuo Semba ,  Xiaotian Sun

IPC分类号： G11B21/02 ,  G11B5/82

CPC分类号： G11B5/59688 ,  G11B5/59655

摘要： A magnetic data storage system having a magnetic disk having burst patterns for providing a position error signal (PES) wherein each magnetic burst pattern is offset from an adjacent burst pattern by ¼ track pitch. All of the magnetic bits of the burst patterns can be unipolar magnetized, and the bits of each burst pattern can be aligned with one another in radial and circumferential direction. The magnetic media can be a bit patterned media wherein the magnetic bits of the burst patterns are magnetically isolated portions separated by non-magnetic spaces or non-magnetic material.

摘要翻译： 一种磁数据存储系统，具有具有用于提供位置误差信号（PES）的脉冲串模式的磁盘，其中每个磁脉冲串模式从相邻脉冲串模式偏移1/4声道间距。 突发图案的所有磁位可以是单极磁化的，并且每个突发图案的位可以在径向和圆周方向上彼此对准。 磁介质可以是位图形介质，其中突发图案的磁位是被非磁性空间或非磁性材料隔开的磁隔离部分。

公开(公告)号：US07450335B2

公开(公告)日：2008-11-11

申请号：US11502069

申请日：2006-08-09

申请人： Toshiki Hirano ,  Tetsuo Semba ,  Matthew T. White

发明人： Toshiki Hirano ,  Tetsuo Semba ,  Matthew T. White

IPC分类号： G11B5/596

CPC分类号： G11B5/59627 ,  G11B5/6017

摘要： Methods and systems for reducing read/write head track misregistration are described. According to one embodiment, a first signal is received from a first capacitive sensor that faces a surface of a disk associated with a disk drive. A second signal is received from a second capacitive sensor that faces the surface of the disk. A determination is made as to whether the disk is being moved along its axis of rotation or whether the disk is tilting. Read/write head track misregistration is reduced based on the determination of whether the disk drive is being moved along an axis of rotation or whether the disk is tilting.

公开(公告)号：US08953266B2

公开(公告)日：2015-02-10

申请号：US13593991

申请日：2012-08-24

申请人： Abhishek Dhanda ,  Toshiki Hirano ,  Tetsuo Semba

发明人： Abhishek Dhanda ,  Toshiki Hirano ,  Tetsuo Semba

IPC分类号： G11B5/54

CPC分类号： G11B20/1252 ,  G11B5/09 ,  G11B5/5543 ,  G11B5/56 ,  G11B5/59694 ,  G11B2020/1238

摘要： A data storage device with improved data storage densities, coupled with lower hard error and write-inhibit events is described. A feed-forward write inhibit (FFWI) method enables data tracks to be written more densely. Alternatively, the FFWI method may reduce the hard error and write inhibit events to improve data storage performance. A concept of virtual tracks enables the FFWI method to be applied to the writing of circular data tracks with non-circular servo tracks, or to the writing of non-circular data tracks with PES data from circular servo tracks—in both cases, improvements to performance and/or storage densities are enabled. The FFWI method may also be applied to the case of both non-circular servo and data tracks.

摘要翻译： 描述了具有改进的数据存储密度以及更低的硬错误和禁止写入事件的数据存储设备。 前馈写禁止（FFWI）方法使数据轨道更加密集地写入。 或者，FFWI方法可以减少硬错误和写禁止事件以提高数据存储性能。 虚拟轨道的概念使得FFWI方法可以应用于用非圆形伺服轨迹写入圆形数据轨道，或者用于从圆形伺服轨迹写入具有PES数据的非圆形数据轨迹 - 在这两种情况下，改进 性能和/或存储密度启用。 FFWI方法也可以应用于非圆形伺服和数据轨道的情况。

公开(公告)号：US20130083420A1

公开(公告)日：2013-04-04

申请号：US13249041

申请日：2011-09-29

申请人： Thomas R. Albrecht ,  Toshiki Hirano ,  Tetsuo Semba ,  Xiaotian Sun

发明人： Thomas R. Albrecht ,  Toshiki Hirano ,  Tetsuo Semba ,  Xiaotian Sun

IPC分类号： G11B15/52 ,  G11B5/82

CPC分类号： G11B5/59688 ,  G11B5/59655

摘要： A magnetic data storage system having a magnetic disk having burst patterns for providing a position error signal (PES) wherein each magnetic burst pattern is offset from an adjacent burst pattern by ¼ track pitch. All of the magnetic bits of the burst patterns can be unipolar magnetized, and the bits of each burst pattern can be aligned with one another in radial and circumferential direction. The magnetic media can be a bit patterned media wherein the magnetic bits of the burst patterns are magnetically isolated portions separated by non-magnetic spaces or non-magnetic material.

摘要翻译： 一种磁数据存储系统，具有具有用于提供位置误差信号（PES）的脉冲串模式的磁盘，其中每个磁脉冲串模式从相邻脉冲串模式偏移1/4声道间距。 突发图案的所有磁位可以是单极磁化的，并且每个突发图案的位可以在径向和圆周方向上彼此对准。 磁介质可以是位图形介质，其中突发图案的磁位是被非磁性空间或非磁性材料隔开的磁隔离部分。

公开(公告)号：US07499243B2

公开(公告)日：2009-03-03

申请号：US11835309

申请日：2007-08-07

申请人： Toshiki Hirano ,  Tetsuo Semba ,  Matthew T. White

发明人： Toshiki Hirano ,  Tetsuo Semba ,  Matthew T. White

IPC分类号： G11B33/14

CPC分类号： G11B5/58 ,  G11B5/5582 ,  G11B5/596 ,  G11B33/08

摘要： A data recording disk drive has one or more capacitive sensors for sensing out-of-plane vibration of the disk or disks. The sensors are attached to a support structure that is attached to the disk drive housing. Each sensor is associated with a disk and faces a surface of the disk near the outer perimeter of the disk and close to the recording head. The support structure can be made of a metal or a high-strength plastic and can be a separate structure mounted to the housing, or integrated as part of the single-piece housing casting. If it is metallic, as would be the case if it were integrated with the housing, then layers of insulating material separate the sensors from the support structure. A support structure that serves other functions in the disk drive, such as a support for air dams that extend between the disks, can also function as the support structure for the capacitive sensors.

摘要翻译： 数据记录磁盘驱动器具有用于感测盘或盘的平面外振动的一个或多个电容传感器。 传感器连接到附接到磁盘驱动器外壳的支撑结构。 每个传感器与磁盘相关联并且面对靠近盘的外周边的盘的表面并且靠近记录头。 支撑结构可以由金属或高强度塑料制成，并且可以是安装到壳体的单独结构，或者作为单件式外壳铸件的一部分集成。 如果是金属的，如果将其与外壳结合在一起，则绝缘材料层将传感器与支撑结构分开。 用于磁盘驱动器中的其他功能的支撑结构（例如在盘之间延伸的气坝的支撑）也可以用作电容式传感器的支撑结构。

公开(公告)号：US20130135764A1

公开(公告)日：2013-05-30

申请号：US13306736

申请日：2011-11-29

申请人： Abhishek Dhanda ,  Toshiki Hirano ,  Tetsuo Semba ,  Zvonimir Z. Bandic

发明人： Abhishek Dhanda ,  Toshiki Hirano ,  Tetsuo Semba ,  Zvonimir Z. Bandic

IPC分类号： G11B27/36

CPC分类号： G11B5/59627 ,  G11B5/59694 ,  G11B20/1217 ,  G11B2020/1228 ,  G11B2020/1238 ,  G11B2220/2516

摘要： A method, apparatus and a data storage device are provided for implementing data track pitch adjustment for data written on a recordable surface of a storage device under operational vibration conditions. An operational vibration disturbance spectrum is detected during a write operation and the data track pitch is selectively adjusted based on the detected operational vibration disturbance spectrum. The adjusted track pitch information is saved and used during a read operation.

摘要翻译： 提供了一种方法，装置和数据存储装置，用于在操作的振动条件下为存储装置的可记录表面上写入的数据实现数据轨道间距调整。 在写入操作期间检测到操作的振动干扰频谱，并且基于检测到的操作振动干扰谱选择性地调整数据轨道间距。 调整后的音高信息在读取操作期间被保存和使用。

公开(公告)号：US07450339B2

公开(公告)日：2008-11-11

申请号：US11835276

申请日：2007-08-07

申请人： Toshiki Hirano ,  Tetsuo Semba ,  Matthew T. White

发明人： Toshiki Hirano ,  Tetsuo Semba ,  Matthew T. White

IPC分类号： G11B33/14

CPC分类号： G11B5/58 ,  G11B5/5582 ,  G11B5/596 ,  G11B33/08

摘要： A data recording disk drive has one or more capacitive sensors for sensing out-of-plane vibration of the disk or disks. The sensors are attached to a support structure that is attached to the disk drive housing. Each sensor is associated with a disk and faces a surface of the disk near the outer perimeter of the disk and close to the recording head. The support structure can be made of a metal or a high-strength plastic and can be a separate structure mounted to the housing, or integrated as part of the single-piece housing casting. If it is metallic, as would be the case if it were integrated with the housing, then layers of insulating material separate the sensors from the support structure. A support structure that serves other functions in the disk drive, such as support for disk damping plates, can also function as the support structure for the capacitive sensors.

摘要翻译： 数据记录磁盘驱动器具有用于感测盘或盘的平面外振动的一个或多个电容传感器。 传感器连接到附接到磁盘驱动器外壳的支撑结构。 每个传感器与磁盘相关联并且面对靠近盘的外周边的盘的表面并且靠近记录头。 支撑结构可以由金属或高强度塑料制成，并且可以是安装到壳体的单独结构，或者作为单件式外壳铸件的一部分集成。 如果是金属的，如果将其与外壳结合在一起，则绝缘材料层将传感器与支撑结构分开。 用于磁盘驱动器中的其他功能的支撑结构，例如对磁盘阻尼板的支持，也可以用作电容式传感器的支撑结构。