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.

公开(公告)号：US06523085B1

公开(公告)日：2003-02-18

申请号：US09456850

申请日：1999-12-08

申请人： Paul Hodges ,  Bernd Lamberts

发明人： Paul Hodges ,  Bernd Lamberts

IPC分类号： G06F1200

CPC分类号： G06F3/0626 ,  G06F3/064 ,  G06F3/0674

摘要： A disk drive that is enabled by information contained in a mode page and in a command to access data blocks of either a small size (e.g., 512 bytes) or of a large size (e.g., 4,096 bytes). This allows legacy application software written for 512 byte sized blocks to run without change. By turning on the 4,096 byte sized block flag in the command, new software written to obtain improved performance benefits may also be used with the disk drive. The dual block capability is implemented in software.

摘要翻译： 通过包含在模式页面中的信息和访问小尺寸（例如，512字节）或大尺寸（例如，4096字节）的数据块的命令来启用的磁盘驱动器。 这允许为512字节大小的块编写的遗留应用软件无变化地运行。 通过打开命令中的4,096字节大小的块标志，为获得改进的性能优势而编写的新软件也可以与磁盘驱动器一起使用。 双块功能是以软件实现的。

公开(公告)号：US08131920B2

公开(公告)日：2012-03-06

申请号：US11999933

申请日：2007-12-06

申请人： Ryoheita Hattori ,  David H. Jen ,  Bernd Lamberts ,  Remmelt Pit ,  Kris Schouterden

发明人： Ryoheita Hattori ,  David H. Jen ,  Bernd Lamberts ,  Remmelt Pit ,  Kris Schouterden

IPC分类号： G06F12/00

CPC分类号： G11B20/22 ,  G06F3/0619 ,  G06F3/064 ,  G06F3/0676 ,  G11B20/10009 ,  G11B2020/1843 ,  G11B2220/2516

摘要： A data formatting system and method to improve data efficiency and integrity in a hard disk are disclosed. One embodiment provides a disk drive system having a plurality of lookup tables which store a plurality of randomizer seeds which may be dynamically encoded into the preamble field of a customer data block if the customer data is deemed marginal. Encoding the randomizer seed into the preamble field prevents adjacent data track mis-writes and mis-reads.

摘要翻译： 公开了一种提高硬盘数据效率和完整性的数据格式化系统和方法。 一个实施例提供了一种具有多个查找表的磁盘驱动器系统，其存储多个随机化器种子，如果客户数据被认为是边缘的，则其可以被动态地编码到客户数据块的前导字段中。 将随机化器种子编码到前导字段防止相邻数据跟踪错误写入和误读。

公开(公告)号：US20090150637A1

公开(公告)日：2009-06-11

申请号：US11999933

申请日：2007-12-06

申请人： Ryoheita Hattori ,  David H. Jen ,  Bernd Lamberts ,  Remmelt Pit ,  Kris Schouterden

发明人： Ryoheita Hattori ,  David H. Jen ,  Bernd Lamberts ,  Remmelt Pit ,  Kris Schouterden

IPC分类号： G06F12/02

CPC分类号： G11B20/22 ,  G06F3/0619 ,  G06F3/064 ,  G06F3/0676 ,  G11B20/10009 ,  G11B2020/1843 ,  G11B2220/2516

摘要： A data formatting system and method to improve data efficiency and integrity in a hard disk are disclosed. One embodiment provides a disk drive system having a plurality of lookup tables which store a plurality of randomizer seeds which may be dynamically encoded into the preamble field of a customer data block if the customer data is deemed marginal. Encoding the randomizer seed into the preamble field prevents adjacent data track mis-writes and mis-reads.

摘要翻译： 公开了一种提高硬盘数据效率和完整性的数据格式化系统和方法。 一个实施例提供了一种具有多个查找表的磁盘驱动器系统，其存储多个随机化器种子，如果客户数据被认为是边缘的，则其可以被动态地编码到客户数据块的前导字段中。 将随机化器种子编码到前导字段防止相邻数据跟踪错误写入和误读。

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：US06963458B2

公开(公告)日：2005-11-08

申请号：US10086579

申请日：2002-02-28

申请人： Bernd Lamberts

发明人： Bernd Lamberts

IPC分类号： G11B5/55 ,  G11B5/596 ,  G11B27/36 ,  G11B5/09

CPC分类号： G11B5/59633 ,  G11B5/5521

摘要： A method and apparatus for reducing the servo position error signal non-linearity during self-servo writing irrespective of the head width is disclosed. Write current of each head is modified based upon the head width. The write width for all heads is measured and a write current for each head in a disk drive is adjusted toward a predetermined level. A mean track propagation width for the disk drive is determined, wherein the predetermined level establishes the determined mean track propagation. A mean head width is determined and the write current for each head is adjusted by applying a higher write current to heads smaller than the mean head width and a lower write current to heads wider than the mean head width. Optimal performance is achieved using the adjusted write currents. The measuring of the head width is repeated and the write current is adjusted until a track propagation for the disk drive meets a predetermined criteria. The predetermined criteria includes a predetermined minimum threshold or a minimum variance in track propagation width.

摘要翻译： 公开了一种用于在自伺服写入期间减小伺服位置误差信号非线性的方法和装置，而不考虑磁头宽度。 基于头部宽度修改每个头部的写入电流。 测量所有磁头的写入宽度，并将磁盘驱动器中的每个磁头的写入电流调整到预定的电平。 确定磁盘驱动器的平均磁道传播宽度，其中预定电平建立确定的平均磁道传播。 确定平均磁头宽度，并且通过对小于平均磁头宽度的磁头施加更高的写入电流并且将较低的写入电流施加到比平均磁头宽度更宽的头部来调节每个磁头的写入电流。 使用调整后的写入电流实现最佳性能。 重复头部宽度的测量，并且调整写入电流直到磁盘驱动器的磁道传播满足预定标准。 预定标准包括轨道传播宽度中的预定最小阈值或最小方差。

公开(公告)号：US06418510B1

公开(公告)日：2002-07-09

申请号：US09662271

申请日：2000-09-14

申请人： Bernd Lamberts

发明人： Bernd Lamberts

IPC分类号： G06F1200

CPC分类号： G06F12/0888 ,  G06F3/0611 ,  G06F3/0656 ,  G06F3/0676 ,  G06F12/0866 ,  G06F12/121

摘要： A cooperative disk cache management and rotational positioning optimization (RPO) method for a data storage device, such as a disk drive, makes cache decisions that decrease the total access times for all data. The cache memory provides temporary storage for data either to be written to disk or that has been read from disk. Data access times from cache are significantly lower than data access times from the storage device, and it is advantageous to store in cache data that is likely to be referenced again. For each data block that is a candidate to store in cache, a cost function is calculated and compared with analogous cost functions for data already in cache. The data having the lowest cost function is removed from cache and replaced with data having a higher cost function. The cost function C measures the expected additional cost, in time, of not storing the data in cache, and is given by C=(Td−Tc)P, where Td is the disk access time, Tc is the cache access time, and P is an access probability for the data. Access times are calculated according to an RPO algorithm that includes both seek times and rotational latencies.

摘要翻译： 用于诸如磁盘驱动器的数据存储设备的协作磁盘高速缓存管理和旋转定位优化（RPO）方法使缓存决定减少了所有数据的总访问时间。 高速缓冲存储器为要写入磁盘或从磁盘读取的数据提供临时存储。 来自高速缓存的数据访问时间明显低于来自存储设备的数据访问时间，并且有利的是存储在可能被再次被引用的高速缓存数据中。 对于作为高速缓存中存储的候选者的每个数据块，计算成本函数并将其与已经在高速缓存中的数据的类似成本函数进行比较。 具有最低成本函数的数据从高速缓存中移除，并由具有较高成本函数的数据代替。 成本函数C测量在高速缓存中不存储数据的预期附加成本，并且由C =（Td-Tc）P给出，其中Td是磁盘访问时间，Tc是高速缓存访​​问时间，以及 P是数据的访问概率。 根据包括寻道时间和旋转延迟的RPO算法来计算访问时间。

公开(公告)号：US07920350B2

公开(公告)日：2011-04-05

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： G11B27/36

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。