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公开(公告)号：US20080151418A1
公开(公告)日：2008-06-26
申请号：US11643154
申请日：2006-12-20
IPC分类号： G11B5/52
CPC分类号： G11B5/6064 , G11B5/607
摘要： Embodiments of the present invention pertain to a tradeoff between reliability and performance for a disk drive. According to one embodiment, a first measurement at a first thermal fly height control (TFC) heater level that provides low reliability for a parameter and a second measurement at a second TFC heater level that provides low performance for the parameter are determined. The first measurement and the second measurement are used to determine if there is a third TFC heater level that at least satisfies a criteria for the parameter whereby the tradeoff between the reliability and the performance for the disk drive is enabled.
摘要翻译： 本发明的实施例涉及磁盘驱动器的可靠性和性能之间的折衷。 根据一个实施例，确定在为参数提供低性能的第二TFC加热器级提供低参数可靠性和第二测量的第一热飞跃高度控制（TFC）加热器水平的第一测量。 第一测量和第二测量用于确定是否存在至少满足参数的标准的第三TFC加热器级别，从而使可靠性和磁盘驱动器的性能之间的折衷得以实现。
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公开(公告)号：US08068306B2
公开(公告)日：2011-11-29
申请号：US12637408
申请日：2009-12-14
CPC分类号： G11B5/6064 , G11B5/6005
摘要： Approaches for improving the write quality of a hard-disk drive (HDD) head experiencing temporary fly-height problem. When the hard-disk drive is idle and heads are parked on the ramp, fluid, such as a lubricant or the condensation of vapor, may collect between the surface of a platter and the head or a slider, thereby causing the head to temporarily fly higher than normal. An HDD may include electronic component(s) configured to (a) determine whether it is likely that fluid is interposed between the surface of a magnetic-recording disk and the slider or the head, and (b) temporarily adjust one or more of (i) a thermal fly height control setting of the head and (ii) a write parameter of the head to compensate for the head flying higher than normal as a result of the fluid being interposed between the surface of the disk and the slider or the head.
摘要翻译： 提高硬盘驱动器（HDD）头部经历暂时飞高问题的写入质量的方法。 当硬盘驱动器空闲并且头部停放在斜坡上时，流体（例如润滑剂或蒸气冷凝）可以在盘片的表面与头部或滑块之间收集，从而导致头部暂时飞行 高于正常 HDD可以包括被配置为（a）确定在磁记录盘的表面和滑块或头之间是否存在流体的电子部件，以及（b）暂时调整一个或多个 i）头部的热飞行高度控制设置和（ii）头部的写入参数，以补偿头部飞行高于正常，这是因为流体插入在盘的表面和滑块或头部之间 。
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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。
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公开(公告)号：US20090059413A1
公开(公告)日：2009-03-05
申请号：US11897636
申请日：2007-08-30
IPC分类号： G11B21/02
CPC分类号： G11B5/6064 , G11B5/607
摘要： A method for increasing reliability of a hard disk drive (HDD) is disclosed. One of a plurality of magnetic read/write heads in a hard disk drive (HDD) is determined to be disabled, and a fly-height associated with the disabled read/write head is increased with respect to a fly-height associated with the plurality of read/write heads.
摘要翻译： 公开了一种用于提高硬盘驱动器（HDD）的可靠性的方法。 确定硬盘驱动器（HDD）中的多个磁读/写头之一被禁用，并且与禁用的读/写头相关联的飞高相对于与多个相关联的飞高相关地增加 的读/写头。
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5.发明授权Environmental corrosion protection for hard disk drive elements by thermal activation 失效通过热激活对硬盘驱动器元件进行环境防护公开(公告)号：US06407880B1
公开(公告)日：2002-06-18
申请号：US09535780
申请日：2000-03-28
IPC分类号： G11B1702
CPC分类号： G11B33/144
摘要： A computer system hard disk drive contains magnetic heads for reading data to and writing data from storage media disks. The heads are coupled to an electrical source that thermally excites the heads during non-operation of the disk drive in order to raise the temperature of the heads. The temperature increase induces a mechanism such as a local, low humidity barrier at each of the heads. When the disk drive is stored in harsh environmental atmospheres, such as high temperatures and high humidity, the mechanism or low humidity barrier is sufficient to overcome the ambient conditions and reduce environmental corrosion of the heads.
摘要翻译： 计算机系统硬盘驱动器包含用于从存储介质盘读取数据和写入数据的磁头。 头部耦合到电源，其在磁盘驱动器的非操作期间热激发磁头，以便提高磁头的温度。 温度升高在每个头部引起机构，例如局部的，低湿度的屏障。 当磁盘驱动器存放在诸如高温和高湿度的恶劣环境环境中时，机构或低湿度屏障足以克服环境条件并减少磁头的环境腐蚀。
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公开(公告)号：US20110116186A1
公开(公告)日：2011-05-19
申请号：US12622109
申请日：2009-11-19
IPC分类号： G11B21/02
CPC分类号： G11B20/1217 , G11B2005/0005 , G11B2020/1292 , G11B2020/1298 , G11B2220/2516
摘要： Approaches for adjusting the recording density of a recording medium in a circumferential direction are disclosed. A hard-disk drive includes one or more electronic components configured to divide a track, of a plurality of concentric tracks on a magnetic-recording disk, into a plurality of portions, and write data to each of the plurality of portions at a recording density that is independent of the recording density used for any of the other portions. Data may be written to a first portion of a track at a different frequency than to a second portion of the same track. The frequency at which data is written may be adjusted for different portions of the same track to allow the frequency to be reduced at certain portions shown to have relatively higher soft error rate while increasing the frequency for other portions to achieve a desired average error rate for the track.
摘要翻译： 公开了用于调节记录介质在圆周方向上的记录密度的方法。 硬盘驱动器包括一个或多个电子部件，其被配置为将磁记录盘上的多个同心轨道的轨迹分成多个部分，并且以记录密度将数据写入多个部分中的每一个部分 其独立于用于任何其它部分的记录密度。 数据可以以与相同轨道的第二部分不同的频率写入轨道的第一部分。 可以针对同一轨道的不同部分调整写入数据的频率，以允许在显示为具有相对较高的软错误率的某些部分减小频率，同时增加其他部分的频率以实现期望的平均误码率 轨道。
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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。
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公开(公告)号：US20050197047A1
公开(公告)日：2005-09-08
申请号：US11065319
申请日：2005-02-23
申请人： Donald Gillis , Kris Schouterden
发明人： Donald Gillis , Kris Schouterden
CPC分类号： G11B5/60 , G11B5/102 , Y10T29/47 , Y10T29/49025
摘要： A slider burnishing method is introduced, in which the slider is brought into a predetermined surface contact with the rotating disk for a specified period. The predetermined surface contact end the specified time period are selected together with the surface condition of the rotating hard disk, such that smoothened slider surface is abrasively formed. The smoothened slider surface is substantially parallel to the disk surface and thus provides reduced contact pressure during eventual operational contacting. In addition, the smoothened slider surface creates a constant gap together with the disk surface, which enhances the aerodynamic properties of the air bearing surface and stabilizes a small fly height.
摘要翻译： 引入滑块抛光方法，其中滑块与旋转盘预定的表面接触一段指定的时间。 与规定的时间周期结束的预定表面接触端与旋转硬盘的表面状态一起选择，使得平滑的滑块表面被磨蚀地形成。 平滑的滑块表面基本上平行于盘表面，因此在最终的操作接触期间提供降低的接触压力。 此外，平滑的滑块表面与盘表面一起形成恒定的间隙，这增强了空气轴承表面的空气动力特性并稳定了小的飞行高度。
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9.发明授权Method and apparatus using reverse disk rotation to achieve slider contact with a disk surface 失效使用反转盘旋转以实现滑块与盘表面接触的方法和装置公开(公告)号：US06934101B2
公开(公告)日：2005-08-23
申请号：US10607599
申请日：2003-06-27
申请人： Walton Fong , Donald R. Gillis , Remmelt Pit , Kris Schouterden , Mike Suk
发明人： Walton Fong , Donald R. Gillis , Remmelt Pit , Kris Schouterden , Mike Suk
IPC分类号： G11B5/00 , G11B5/10 , G11B5/105 , G11B5/187 , G11B5/31 , G11B5/39 , G11B5/48 , G11B5/60 , G11B5/82 , G11B27/36
CPC分类号： G11B5/3169 , G11B5/102 , G11B5/105 , G11B5/1871 , G11B5/3116 , G11B5/3166 , G11B5/3967 , G11B5/4886 , G11B5/6005 , G11B5/82 , G11B2005/001 , G11B2005/0016
摘要： A method for burnishing a slider in a disk drive in which the disk is rotated in the opposite or reverse direction from that used to develop the air-bearing and to read and write data is described. Rotating the disk in the reverse direction results in no air-bearing being formed and the slider being in contact with the disk surface. The burnishing removes material over the magnetic transducers in the slider which separate the transducers from the disk resulting in greater sensitivity. Optionally the stopping point for burnishing can be determined by monitoring measurable parameters such as the change in the MR resistance (MRR), i.e., ΔMRR/MRR until a selected range is achieved. The invention can be used to remove an overcoat from the air-bearing surface of the slider, remove protruding areas from the slider and to remove debris from the disk surface.
摘要翻译： 描述了一种在盘驱动器中抛光滑块的方法，其中盘沿与用于显影空气轴承的方向相反或相反的方向旋转并且读取和写入数据。 沿相反方向旋转盘片不会形成空气轴承，并且滑块与盘表面接触。 抛光去除滑块上的磁换能器上的材料，其将换能器与盘分离，导致更大的灵敏度。 可选地，抛光的停止点可以通过监测可测量的参数来确定，例如MR阻抗（MRR）的变化，即DeltaMRR / MRR，直到达到所选择的范围。 本发明可用于从滑块的空气轴承表面去除外涂层，从滑块移除突出区域并从盘表面去除碎屑。
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10.发明授权Method and system for dynamically allocating read and write sequence randomizer 有权动态分配读取和写入序列随机化器的方法和系统公开(公告)号：US08131920B2
公开(公告)日：2012-03-06
申请号：US11999933
申请日：2007-12-06
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。
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