公开(公告)号：US07126778B2

公开(公告)日：2006-10-24

申请号：US09777459

申请日：2001-02-06

申请人： Bernd Lamberts

发明人： Bernd Lamberts

IPC分类号： G11B19/02 ,  G11B5/09

CPC分类号： G11B20/10481 ,  G11B5/012 ,  G11B5/02 ,  G11B5/035 ,  G11B5/3106 ,  G11B20/10 ,  G11B20/10194 ,  G11B27/36 ,  G11B33/14 ,  G11B2005/0013 ,  G11B2220/20

摘要： It has been discovered by the inventors that the efficiency and data integrity of a storage device can be improved by dynamically adjusting certain operating parameters to optimal values during the operation of the storage device. In one embodiment, the physical properties of a storage device such as a hard disk drive are measured during the manufacturing process to determine the dependency of the storage device upon the environmental conditions in which the storage device is operating. The physical properties of the storage device and the effect the operating environment of the storage device has upon the storage device performance are determined, and optimal values for the write current of the storage device are stored in a lookup table. The temperature in which the storage device is operating is used as a reference into the data that resides in the lookup table. Optimal values for the precompensation delay may also be stored in the lookup table. During operation of the storage device, the temperature of the operating environment is sensed and used as a reference value into the lookup table. The optimal values of write current and precompensation delay corresponding to the sensed temperature are retrieved, and the write current and precompensation delay of the storage device are adjusted accordingly.

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：US06603630B1

公开(公告)日：2003-08-05

申请号：US09473838

申请日：1999-12-28

申请人： Karl Gong ,  Bernd Lamberts ,  Thomas Earl Stanley

发明人： Karl Gong ,  Bernd Lamberts ,  Thomas Earl Stanley

IPC分类号： G11B5596

CPC分类号： G11B5/596

摘要： A method and apparatus for monitoring track misregistration that is quicker and that is not limited to worst case assumptions. The present invention includes a first memory for accumulating position error signals for a head to produce an accumulated value, a processor for normalizing the accumulated value to produce a normalized result at a predetermined trigger event and a second memory for adding the normalized result therein to produce a running sum; wherein the head is positioned using the running sum. The processor resets the first memory when the normalized result is produced. A counter is provided for incrementing a count value after each position error signal is added to the first memory. The processor normalizes the accumulated value according to the count value of the counter, and the processor resets the counter as a result. In addition, the processor may normalize the accumulated value according to a population mean and a variance associated with the data storage system. The trigger event may include the accumulated error value reaching a predetermined threshold or a servo seek to the next track. The process may be initiated using a self-test command.

摘要翻译： 用于监测轨迹重合失调的方法和装置，该方法和装置更快，并不限于最坏的情况假定。 本发明包括一个第一存储器，用于累积头部的位置误差信号以产生累加值;处理器，用于对累积值进行归一化以在预定的触发事件处产生归一化结果;以及第二存储器，用于将归一化结果加到其中以产生 一个运行的和; 其中使用运行总和来定位头部。 当生成标准化结果时，处理器重置第一个内存。 提供计数器用于在将每个位置误差信号添加到第一存储器之后递增计数值。 处理器根据计数器的计数值对积分值进行归一化，结果，处理器重置计数器。 此外，处理器可以根据总体平均值和与数据存储系统相关联的方差来对累积值进行归一化。 触发事件可以包括达到预定阈值的累积误差值或到下一个轨道的伺服寻找。 该过程可以使用自检命令来启动。

公开(公告)号：US06603628B1

公开(公告)日：2003-08-05

申请号：US09704420

申请日：2000-11-01

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： G11B19/04 ,  G11B5/012 ,  G11B5/455 ,  G11B33/10 ,  G11B33/1486 ,  G11B2005/0008 ,  G11B2005/0016 ,  G11B2005/0021

摘要： A magnetic recording disk drive with a magnetoresisitive (MR) read head and a control unit comprising an operating pressure logic function that is responsive to a thermoresistive signal contained in the feedback signal from the MR read head. The thermal conductivity of the air inside of the hard disk drive is effected by the air pressure. Fluctuation in the thermal conductance from the MR read head to its surroundings inside of the hard drive affects the temperature of the MR head, thus affecting the thermoresistivity of the MR read head. Based on a thermoresistive signal, the temperature of the head may be determined, which in turn is applied to determine the pressure, based on a predetermined relationship between the MR read head temperature, internal pressure, and internal operating temperature.

摘要翻译： 一种磁记录磁盘驱动器，其具有磁感应（MR）读头和控制单元，该控制单元包括响应于来自MR读取头的反馈信号中包含的热电阻信号的操作压力逻辑功能。 硬盘驱动器内部的空气的热导率由空气压力影响。 从MR读取头到硬盘驱动器周围的热传导的波动会影响MR磁头的温度，从而影响MR读取头的热电阻。 基于热电阻信号，可以基于MR读取头温度，内部压力和内部操作温度之间的预定关系来确定头部的温度，其依次被施加以确定压力。

公开(公告)号：US07538961B2

公开(公告)日：2009-05-26

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 ,  G11B21/02

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：US20080084629A1

公开(公告)日：2008-04-10

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： G11B15/12

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：US06947234B2

公开(公告)日：2005-09-20

申请号：US10202672

申请日：2002-07-23

申请人： Bernd Lamberts ,  William Harlow McConnell ,  Adam Daniel Polcyn ,  Frank J. Wang

发明人： Bernd Lamberts ,  William Harlow McConnell ,  Adam Daniel Polcyn ,  Frank J. Wang

IPC分类号： G11B5/012 ,  G11B20/18 ,  G11B20/24 ,  G11B27/36 ,  G11B5/09

CPC分类号： G11B5/012 ,  G11B20/1816 ,  G11B20/24 ,  G11B27/36 ,  G11B2220/20

摘要： Provided are a method, system, and program for performing error correction in a storage device having a magnetic storage medium. A plurality of zones are defined in the magnetic storage medium, wherein each zone comprises a plurality of addressable locations in the magnetic storage medium. A determination is made as to whether a change of a signal-to-noise ratio for one subject zone of the plurality of zones exceeds a threshold. An operation is performed to improve the signal-to-noise ratio with respect to the subject zone of the magnetic storage medium after determining that the change of the signal-to-noise ratio exceeds the threshold.

摘要翻译： 提供了一种用于在具有磁存储介质的存储装置中执行纠错的方法，系统和程序。 在磁存储介质中限定多个区域，其中每个区域包括磁存储介质中的多个可寻址位置。 确定多个区域中的一个被摄体区域的信噪比的变化是否超过阈值。 执行操作以在确定信噪比的变化超过阈值之后提高相对于磁存储介质的被摄体区域的信噪比。

公开(公告)号：US06442705B1

公开(公告)日：2002-08-27

申请号：US09299303

申请日：1999-04-26

申请人： Bernd Lamberts

发明人： Bernd Lamberts

IPC分类号： H04L122

CPC分类号： G11B5/59627 ,  G11B5/012

摘要： A disk drive operative to reduce squeeze hard error is described. In response to a write fault (404) indicating that data has been inadvertently written to some portion of a track adjacent to an intended track, track overshoot is determined (416) based on a position error signal (PES) and pre-stored head width data. If the track overshoot exceeds a threshold (418), data from the adjacent track is read and rewritten (422) to remove the overshoot interference. Preferably, the reading and rewriting is performed during an idle mode immediately following the write fault using previously stored addresses.

摘要翻译： 描述了可操作以减少挤压硬错误的磁盘驱动器。 响应于指示数据被无意地写入与预期轨道相邻的轨道的某些部分的写入故障（404），基于位置误差信号（PES）和预先存储的磁头宽度来确定轨迹过冲（416） 数据。 如果轨道超调超过阈值（418），则读取和重写来自相邻轨道的数据（422）以消除过冲干扰。 优选地，在使用先前存储的地址的写入故障之后的空闲模式期间执行读取和重写。

公开(公告)号：US06313964B1

公开(公告)日：2001-11-06

申请号：US09159820

申请日：1998-09-23

申请人： Bernd Lamberts ,  Mantle Yu

发明人： Bernd Lamberts ,  Mantle Yu

IPC分类号： G11B2102

CPC分类号： G11B5/5556 ,  G11B21/025

摘要： In a disk drive system, a servo controller is operative to perform a process of inhibiting write operations for writing data to tracks of a disk during a head settling period following a track seek operation. During each of a first plurality of sampling intervals transpiring during a first time period, the servo controller determines a present position value indicative of the position of the head during the present sampling interval, and also determines a predicted position value indicative of the position of the head during a subsequent sampling interval. Also during each of the first plurality of sampling intervals, the servo controller determines: whether the present position value is within a first error margin from the center of a target track; and whether the predicted position value is within the first error margin. If the present position value and the predicted position value are both within the first error margin, the servo controller enables write operations. During each of a second plurality of the sampling intervals transpiring during a second time period, the servo controller determines a predicted position value indicative of the position of the head during a subsequent sampling interval. Also during each of the second plurality of sampling intervals, the servo controller determines whether the predicted position value is within a second error margin from the center of the target track. If the predicted position value is not within the second error margin, the servo controller inhibits write operations.

摘要翻译： 在磁盘驱动器系统中，伺服控制器可操作以执行在跟踪寻道操作之后的磁头建立周期期间禁止写入数据到磁盘轨道的写操作的处理。 在第一时间段期间发生的第一多个采样间隔的每一个期间，伺服控制器在当前采样间隔期间确定指示头部的位置的当前位置值，并且还确定指示该位置的预测位置值， 在随后的采样间隔期间。 此外，在第一多个采样间隔的每一个期间，伺服控制器确定：当前位置值是否在距离目标轨道的中心的第一误差范围内; 以及预测位置值是否在第一误差范围内。 如果当前位置值和预测位置值都在第一误差范围内，则伺服控制器启用写入操作。 在第二时间段期间发生的第二多个采样间隔的每一个期间，伺服控制器在随后的采样间隔期间确定指示头部的位置的预测位置值。 此外，在第二多个采样间隔的每一个期间，伺服控制器确定预测位置值是否在距离目标轨道的中心的第二误差范围内。 如果预测位置值不在第二误差范围内，则伺服控制器禁止写操作。