公开(公告)号：US07525760B2

公开(公告)日：2009-04-28

申请号：US11104333

申请日：2005-04-11

申请人： Wen-Chien Hsiao ,  Terence Lam ,  Bernd Lamberts ,  Yinshi Liu ,  Terry Olson ,  Michael Yang ,  Samuel Yuan

发明人： Wen-Chien Hsiao ,  Terence Lam ,  Bernd Lamberts ,  Yinshi Liu ,  Terry Olson ,  Michael Yang ,  Samuel Yuan

IPC分类号： G11B5/235

CPC分类号： G11B5/3116 ,  G11B5/235

摘要： Embodiments of the present invention recite a write gap structure for a magnetic recording head. In one embodiment, the write gap structure comprises at least one layer of inert material is disposed proximate to the P2 pole of a magnetic recording head. A layer of magnetic material is disposed between the layer of inert material and the P1 pedestal (P1P) of the magnetic recording head. In embodiments of the present invention, the write gap structure further comprises a second layer of inert material is disposed between the layer of magnetic material and the P1P of the magnetic recording head. In embodiments of the present invention, the write gap structure only overlies a portion of the write gap of the magnetic recording head with reference to the throat height dimension of the write gap.

摘要翻译： 本发明的实施例叙述磁记录头的写间隙结构。 在一个实施例中，写间隙结构包括至少一层惰性材料，靠近磁记录头的P2极设置。 磁性材料层设置在惰性材料层与磁记录头的P1基座（P1P）之间。 在本发明的实施例中，写间隙结构还包括第二层惰性材料设置在磁性材料层和磁记录头的P1P之间。 在本发明的实施例中，相对于写入间隙的喉部高度尺寸，写入间隙结构仅覆盖磁记录头的写入间隙的一部分。

公开(公告)号：US20060227456A1

公开(公告)日：2006-10-12

申请号：US11104333

申请日：2005-04-11

申请人： Wen-Chien Hsiao ,  Terence Lam ,  Bernd Lamberts ,  Yinshi Liu ,  Terry Olson ,  Michael Yang ,  Samuel Yuan

发明人： Wen-Chien Hsiao ,  Terence Lam ,  Bernd Lamberts ,  Yinshi Liu ,  Terry Olson ,  Michael Yang ,  Samuel Yuan

IPC分类号： G11B5/235

CPC分类号： G11B5/3116 ,  G11B5/235

摘要： Embodiments of the present invention recite a write gap structure for a magnetic recording head. In one embodiment, the write gap structure comprises at least one layer of inert material is disposed proximate to the P2 pole of a magnetic recording head. A layer of magnetic material is disposed between the layer of inert material and the P1 pedestal (P1P) of the magnetic recording head. In embodiments of the present invention, the write gap structure further comprises a second layer of inert material is disposed between the layer of magnetic material and the P1P of the magnetic recording head. In embodiments of the present invention, the write gap structure only overlies a portion of the write gap of the magnetic recording head with reference to the throat height dimension of the write gap.

公开(公告)号：US07225293B2

公开(公告)日：2007-05-29

申请号：US10463012

申请日：2003-06-16

申请人： Bernd Lamberts

发明人： Bernd Lamberts

IPC分类号： G06F13/20

CPC分类号： G11B5/09

摘要： Provided are a method, system, and program for executing Input/Output (I/O) requests. Delay times associated with processing a plurality of I/O requests are determined. The determined delay times for the I/O requests are adjusted according to priorities assigned to the I/O requests and a determination is made of an ordering of the I/O requests based on the adjusted delay times. At least one I/O request is executed according to the determined ordering.

摘要翻译： 提供了用于执行输入/输出（I / O）请求的方法，系统和程序。 确定与处理多个I / O请求相关联的延迟时间。 所确定的I / O请求的延迟时间根据分配给I / O请求的优先级进行调整，并且基于经调整的延迟时间确定I / O请求的顺序。 根据确定的顺序执行至少一个I / O请求。

公开(公告)号：US06700726B1

公开(公告)日：2004-03-02

申请号：US09723005

申请日：2000-11-27

申请人： Donald Ray Gillis ,  Bernd Lamberts ,  Kris Victor Schouterden

发明人： Donald Ray Gillis ,  Bernd Lamberts ,  Kris Victor Schouterden

IPC分类号： G11B2102

CPC分类号： G11B25/043 ,  G11B5/58 ,  G11B27/36 ,  G11B33/1486 ,  G11B2005/001 ,  G11B2005/0016 ,  G11B2005/0021 ,  G11B2220/20

摘要： A disk drive controller controls a vacuum pump to establish a vacuum within a disk drive housing to conserve power while ensuring that the head of the drive does not crash into the disk. The controller compares actual spindle power to a predetermined maximum power threshold and actual fly height to a calibration fly height to control the pump. The calibration values are derived by comparing no-load and loaded values for a parameter, e.g., error rate, disk temperature, and so on.

摘要翻译： 磁盘驱动器控制器控制真空泵以在磁盘驱动器壳体内建立真空以节省电力，同时确保驱动器的磁头不会碰到磁盘。 控制器将实际主轴功率与预定的最大功率阈值和实际飞行高度进行比较，以校准飞行高度来控制泵。 通过比较参数的空载和加载值（例如错误率，磁盘温度等）导出校准值。

公开(公告)号：US06426843B1

公开(公告)日：2002-07-30

申请号：US09300070

申请日：1999-04-27

申请人： Bernd Lamberts ,  Louis Joseph Serrano ,  Mantle Man-Hon Yu

发明人： Bernd Lamberts ,  Louis Joseph Serrano ,  Mantle Man-Hon Yu

IPC分类号： G11B2102

CPC分类号： G11B21/02 ,  G11B5/5521

摘要： A method, apparatus, and article of manufacture for rotational position reordering of queued commands in a data storage device based on settle time estimator feedback. An initial settle time estimation is programmed into a servo controller for the data storage device. As data operations are performed in the data storage device, an actual settle time is measured for the data operations, generally through the use of a timer in the servo controller. The settle time estimation is then modified based on the actual settle time and the data operations are reordered or scheduled based on the settle time estimation. Specifically, the settle time estimation is adjusted based on a success rate for the data operations, wherein the success rate comprises a comparison of the actual settle time versus the settle time estimation. A first delta value is subtracted from the settle time estimation when the settle time estimation is greater than the actual settle time, and a second delta value is added to the settle time estimation when the settle time estimation is less than the actual settle time. Different settle time estimations may be used depending on various characteristics, i.e., settle time estimations differ for different transducers in the data storage device, according to a type of seek operation, according to a seek direction, according to a track location, and according to seek length.

摘要翻译： 基于结算时间估计器反馈的数据存储装置中的排队命令的旋转位置重新排序的方法，装置和制品。 初始定时估计被编程到用于数据存储设备的伺服控制器中。 由于在数据存储装置中执行数据操作，因此通常通过在伺服控制器中使用定时器来测量数据操作的实际结算时间。 然后，基于实际的结算时间来修改定时时间估计，并且基于确定时间估计重新排序或调度数据操作。 具体地，基于数据操作的成功率来调整结算时间估计，其中成功率包括实际结算时间与结算时间估计的比较。 当结算时间估计大于实际结算时间时，从结算时间估计中减去第一Δ值，并且当结算时间估计小于实际结算时间时，将第二增量值加到结算时间估计中。 可以根据各种特征使用不同的结算时间估计，即，根据搜索方式，根据搜索方向，根据轨道位置，并且根据搜索方式，根据搜索操作的类型，数据存储设备中的不同换能器的安息时间估计不同 寻求长度。

公开(公告)号：US06272565B1

公开(公告)日：2001-08-07

申请号：US09282348

申请日：1999-03-31

申请人： Bernd Lamberts

发明人： Bernd Lamberts

IPC分类号： G06F1300

CPC分类号： G06F3/0613 ,  G06F3/0659 ,  G06F3/0676

摘要： Disclosed is a system, method, and program for selecting an input/output (I/O) command in a queue of I/O commands. Each I/O command operates within a range of addressable locations on a storage medium. Each addressable location is defined according to a sector number and track number. The program makes use of a plurality of buckets, wherein each bucket represents a range of consecutive sector numbers. Each queued I/O command is associated with a bucket such that a sector number of an addressable location in which an I/O command operates is within the range of sectors comprising the associated bucket. A reference position is determined. A selection routine is then executed to select an I/O command. The selection routine selects a bucket including at least one I/O command and selects an I/O command within the selected bucket. The routine then determines whether the selected I/O command meets a selection criteria. The routine indicates the selected I/O command as the I/O command to process. Another iteration of the selection routine is performed after determining that the selected I/O command does not meet the selection criteria.

摘要翻译： 公开了用于在I / O命令的队列中选择输入/输出（I / O）命令的系统，方法和程序。 每个I / O命令在存储介质上的可寻址位置范围内运行。 每个可寻址位置根据扇区号和轨道号进行定义。 该程序利用多个桶，其中每个桶表示连续扇区号的范围。 每个排队的I / O命令与桶相关联，使得I / O命令操作的可寻址位置的扇区号在包括相关联的桶的扇区的范围内。 确定参考位置。 然后执行选择例程以选择I / O命令。 选择例程选择包括至少一个I / O命令的桶，并选择所选择的桶内的I / O命令。 然后该例程确定所选择的I / O命令是否满足选择标准。 该例程将所选择的I / O命令指定为要处理的I / O命令。 在确定所选择的I / O命令不符合选择标准之后执行选择例程的另一次迭代。

公开(公告)号：US20100079903A1

公开(公告)日：2010-04-01

申请号：US12242673

申请日：2008-09-30

申请人： Hoan A. Au ,  Theofilos G. Fkiaras ,  David H. Jen ,  Bernd Lamberts ,  Kris Schouterden ,  Douglas M. Zuercher

发明人： Hoan A. Au ,  Theofilos G. Fkiaras ,  David H. Jen ,  Bernd Lamberts ,  Kris Schouterden ,  Douglas M. Zuercher

IPC分类号： G11B5/596

CPC分类号： G11B5/59622 ,  G11B5/59611

摘要： Data recovery information characterizes data recovery procedure (DRP) steps to be performed within a hard disk drive (HDD) in response to a miss. Particular data recovery information corresponds to a radial position of the actuator and, therefore, the position of the magnetic recording read/write head relative to the associated storage media at the location at which the miss occurred. The data recovery information is based on the physical shape of a write pole and on how the physical shape of the pole inherently affects operational data error associated with the head. Because of the foregoing characteristics of such data recovery information, a more efficient and performant data recovery procedure is performed based thereon.

摘要翻译： 数据恢复信息表征在硬盘驱动器（HDD）响应于错过时执行的数据恢复过程（DRP）步骤。 特定数据恢复信息对应于致动器的径向位置，并且因此对应于磁迹记录读/写头相对于未命中发生位置处的关联存储介质的位置。 数据恢复信息基于写入极的物理形状以及极点的物理形状如何固有地影响与头相关联的操作数据错误。 由于这种数据恢复信息的上述特征，基于此执行更有效和性能更好的数据恢复过程。

公开(公告)号：US07551379B2

公开(公告)日：2009-06-23

申请号：US11545830

申请日：2006-10-10

申请人： Mantle Yu ,  Bernd Lamberts

发明人： Mantle Yu ,  Bernd Lamberts

IPC分类号： G11B5/09

CPC分类号： G11B23/36 ,  G11B5/3967 ,  G11B5/59633 ,  G11B19/02

摘要： Embodiments of the present invention provide a magnetic disk drive system in which the write element leads the read element in the tangential direction of rotation of the magnetic disk. In addition, the servo sector information is preferably arranged such that information that is not needed for write operation is placed at the end of the servo sector. In this way, the servo read operation can be terminated sooner and the write operation can initiate sooner after going over the servo sector. The write element in a write operation writes data to the data sector of a track until an end of the data sector before reaching a front end of a servo sector following the end of the data sector. The read element reads information in the servo sector needed for the write operation. The write element starts writing data in a next data sector following the servo sector after the write element reaches the next data sector and after the read element has read all information in the servo sector needed for the write operation.

摘要翻译： 本发明的实施例提供一种磁盘驱动系统，其中写入元件沿着磁盘的切向旋转方向引导读取元件。 此外，伺服扇区信息优选地布置成使得写操作不需要的信息被放置在伺服扇区的末端。 以这种方式，可以更快地终止伺服读取操作，并且可以在经过伺服扇区之后更快地启动写入操作。 写操作中的写元件将数据写入轨道的数据扇区，直到数据扇区的末尾，在数据扇区结束之后到达伺服扇区的前端。 读取元件读取写入操作所需的伺服扇区中的信息。 在写入元件到达下一个数据扇区之后以及在读取元件读取写入操作所需的伺服扇区中的所有信息之后，写入元件开始在伺服扇区之后的下一个数据扇区中写入数据。

公开(公告)号：US20080316630A1

公开(公告)日：2008-12-25

申请号：US11765650

申请日：2007-06-20

申请人： Bernd Lamberts ,  Vladimir Nikitin ,  James Terrence Olson

发明人： Bernd Lamberts ,  Vladimir Nikitin ,  James Terrence Olson

IPC分类号： G11B27/36 ,  G11B5/17 ,  G11B5/33

CPC分类号： G11B5/1278 ,  G11B5/3133 ,  G11B5/6064 ,  G11B5/607

摘要： A magnetic data recording system that can directly measure soft underlayer spacing of a perpendicular magnetic write head during operation. The soft underlayer spacing of the magnetic write head can be determined by measuring the magnetic inductance of the write head. The inductance of the write head varies with changes in the distance between the write pole and the soft underlayer of the magnetic medium. By connecting the write head with magnetic inductance measuring circuitry, the soft underlayer spacing can be constantly monitored during operation of the magnetic data recording system. The system can also include active fly height control such as a thermal fly height control capability. By directly measuring the soft underlayer spacing in real time during use of the data recording system, the actively fly height controlling features can be operated efficiently to precisely maintain a desired spacing between the write pole and the soft underlayer of the magnetic medium.

摘要翻译： 一种磁性数据记录系统，可在操作过程中直接测量垂直磁性写入头的软底层间距。 可以通过测量写头的磁感来确定磁写头的软底层间距。 写头的电感随磁介质的写极和软底层之间的距离变化而变化。 通过将写入头与磁感测量电路连接起来，可以在磁数据记录系统的操作期间不间断地监视软底层间距。 该系统还可以包括主动飞行高度控制，例如热飞行高度控制能力。 通过在使用数据记录系统期间实时地直接测量软底层间距，可以有效地操作主动飞行高度控制特征，以精确地保持磁性介质的写极和软底层之间的期望间隔。

公开(公告)号：US06651213B2

公开(公告)日：2003-11-18

申请号：US09811882

申请日：2001-03-19

申请人： Martin Aureliano Hassner ,  Bernd Lamberts ,  Thomas Earl Stanley

发明人： Martin Aureliano Hassner ,  Bernd Lamberts ,  Thomas Earl Stanley

IPC分类号： G11C2900

CPC分类号： G11B20/1833 ,  G11B20/1816 ,  H03M13/15

摘要： A method for adaptively controlling the error correction redundancy is presented. The method utilizes test information collected at the file characterization test to adaptively determine the quantity of error correction code bytes needed at a multitude of levels of the error correction scheme. The error correction needed at the sub-block level is determined from a measurement of the back ground noise floor. At the block level the file characterization is specific to zones identified by head, disk, sector and cylinder. The formatting efficiency of the drive is increased by adaptively linking the length of the error correction code to the location of the zone. By measuring the error rate (E/R) on a per zone basis and comparing this rate to the disk level E/R the ECC can be optimized on a per-zone basis. The method is implemented by modeling a probability distribution as a first polynomial having a basis, converting the first polynomial to a second polynomial having a different basis, and by defining a Hamming distance distribution from the second polynomial. In a preferred embodiment, modeling the probability distribution includes modeling as a Charlier polynomial, and converting to the second polynomial includes converting to a Krawtchouck polynomial, and using connection coefficients that are calculated recursively.