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1. 发明授权

US06956707B2 Method for look-ahead thermal sensing in a data storage device 有权
标题翻译：数据存储装置中的预先感测方法
公开(公告)号：US06956707B2
公开(公告)日：2005-10-18
申请号：US10140699
申请日：2002-05-07
申请人： Hal Hjalmar Ottesen , Molly Smith , Sri M. Sri-Jayantha
发明人： Gordon James Smith
IPC分类号： G11B5/012 , G11B20/10 , G11B27/36 , G11B5/02
CPC分类号： G11B27/36 , G11B5/012 , G11B20/10 , G11B2220/20
摘要： A slider having leading and trailing edges is configured to fly on an airbearing adjacent a data storage disk rotating from the leading edge to the trailing edge. Read and write heads are mounted on the slider proximate the trailing edge. An auxiliary thermal sensor is mounted on the slider, but preferably nearer the leading edge. Forward placement of the sensor allows it to sense mechanical defects before they reach the heads, thereby permitting a write inhibit operation, for example. The sensor may also be used to detect airbearing modulation. Appropriate action may be taken when unacceptable airbearing modulation is detected, such as notifying the user and/or scrubbing the slider. The sensor is preferably wider than the heads. This allows, for example, an in-situ glide test to be performed faster using the sensor. An arm electronics module is preferably configured to permit concurrent operation of the sensor and heads.
摘要翻译：具有前缘和后缘的滑块被配置为在与从前缘到后缘旋转的数据存储盘相邻的空气轴上飞行。读写头靠近后缘安装在滑块上。辅助热传感器安装在滑块上，但优选靠近前缘。传感器的正向放置允许其在到达磁头之前感测机械缺陷，从而允许例如写禁止操作。该传感器也可用于检测气囊调制。当检测到不可接受的气囊调制（例如通知用户和/或擦洗滑块）时，可以采取适当的动作。传感器优选地比头部更宽。这允许例如使用传感器更快地执行就地滑行测试。手臂电子模块优选地构造成允许传感器和头部的同时操作。

2. 发明授权

US06831808B2 Method and apparatus for determining track identity from abbreviated track identifying data in a disk drive data storage device 失效
标题翻译：用于从磁盘驱动器数据存储装置中的缩写磁道识别数据确定磁道标识的方法和装置
公开(公告)号：US06831808B2
公开(公告)日：2004-12-14
申请号：US09930596
申请日：2001-08-15
申请人： Hal Hjalmar Ottesen , Gordon James Smith
发明人： Hal Hjalmar Ottesen , Gordon James Smith
IPC分类号： G11B5596
CPC分类号： G11B5/5965
摘要： A disk for a disk drive data storage device contains embedded track identifying fields which identify a track within a range of tracks, the range being less than the full range of tracks on the disk surface. The full identity of a track during a track seek operation is determined by iteratively assuming a track identity and estimating acceleration of the transducer based on the assumed track identity, until a track identity is found for which estimated acceleration meets some pre-determined threshold. Preferably, embedded servo fields are recorded at angularly spaced intervals on the disk surface, and every Nth servo field contains a Gray code full track identifier, while all servo fields in between contain abbreviated Gray code fields which identify a track within a range of tracks.
摘要翻译：用于磁盘驱动器数据存储设备的磁盘包含识别轨道范围内的轨道的嵌入轨道识别区域，该范围小于盘表面上的轨迹的全部范围。通过迭代地假设轨道标识并基于所假定的轨道标识来估计换能器的加速度，直到发现所估计的加速度满足一些预定阈值的轨迹标识来确定轨迹搜索操作期间轨道的完整身份。优选地，在盘表面上以角度间隔的间隔记录嵌入式伺服字段，并且每第N个伺服字段包含格雷码全迹标识符，而其间的所有伺服字段包含识别轨道范围内的轨道的缩写格雷码字段。

3. 发明授权

US06775081B2 Servo format for disk drive data storage devices 失效
标题翻译：磁盘驱动器数据存储设备的伺服格式
公开(公告)号：US06775081B2
公开(公告)日：2004-08-10
申请号：US09930594
申请日：2001-08-15
申请人： Hal Hjalmar Ottesen , Gordon James Smith
发明人： Hal Hjalmar Ottesen , Gordon James Smith
IPC分类号： G11B509
CPC分类号： G11B5/012 , G11B5/59633 , G11B5/59688 , G11B20/1217 , G11B27/3027 , G11B2020/1292 , G11B2020/1298 , G11B2220/20
摘要： A recording disk contains at least two types of servo sector format, including a first type having a relatively larger track identifying field containing the track number, and a second type having an abbreviated track identifying field identifying a track within a range of tracks, the range being less than the full range of tracks on the disk surface. Preferably, Gray code encodings are used, the first type of track field contains sufficient Gray code bits to identify the ful track number, every Nth servo sector is of the first type, and all servo sectors in between are of the second type, N being at least 2. As a result, the disk area required for track identification is reduced, and the additional disk space available can be used to expand the PES field.
摘要翻译：记录盘包含至少两种类型的伺服扇区格式，包括具有相对较大的轨道识别字段的第一类型，该第一类型包含轨道号，以及第二类型，其具有标识轨道范围内的轨道的缩写轨迹识别字段，小于磁盘表面的全部磁道范围。优选地，使用格雷码编码，第一类型的轨道场包含足够的格雷码位以识别轨道号，每第N个伺服扇区是第一类型，并且其间的所有伺服扇区都是第二类型，N是至少2.结果，减少了磁道识别所需的磁盘区域，并且可以使用可用的附加磁盘空间来扩展PES字段。

4. 发明授权

US06654191B2 Restoration of hard disk drive readback signal in the presence of thermal modulation 失效
标题翻译：在存在热调制的情况下恢复硬盘驱动器回读信号
公开(公告)号：US06654191B2
公开(公告)日：2003-11-25
申请号：US09904429
申请日：2001-07-12
申请人： Hal Hjalmar Ottesen , Gordon James Smith
发明人： Hal Hjalmar Ottesen , Gordon James Smith
IPC分类号： G11B500
CPC分类号： G11B20/24 , G11B5/012 , G11B5/02 , G11B20/10 , G11B2005/0016
摘要： A magnetoresistive (MR) head of a hard disk drive provides a readback signal from a data storage disk. The readback signal is high pass filtered, amplified, sampled and digitized to obtain a digital readback signal. A thermal component of the digital readback signal is removed from the digital readback signal by an efficient nonlinear process in which an envelope of the digital readback signal is estimated to obtain upper and lower envelope sequences. The upper and lower envelope sequences are averaged to derive the estimated thermal component to be subtracted from the digital readback signal.
摘要翻译：硬盘驱动器的磁阻（MR）磁头提供来自数据存储盘的回读信号。回读信号被高通滤波，放大，采样和数字化以获得数字回读信号。通过有效的非线性处理从数字回读信号中去除数字回读信号的热分量，其中估计数字回读信号的包络以获得上下包络序列。平均上下包络序列以导出从数字回读信号中减去的估计热分量。

5. 发明授权

US06424484B1 Apparatus with and method of unique disk identification for magnetic hard disk drives 有权
标题翻译：用于磁性硬盘驱动器的独特磁盘识别装置和方法
公开(公告)号：US06424484B1
公开(公告)日：2002-07-23
申请号：US09506968
申请日：2000-02-18
申请人： Hal Hjalmar Ottesen , Gordon James Smith
发明人： Hal Hjalmar Ottesen , Gordon James Smith
IPC分类号： G11B2102
CPC分类号： G11B19/12
摘要： A bar coded magnetic recording pattern uniquely identifying the disk of a disk drive is disposed, at the time the disk is single disk tested and accepted, in a reserved area that is not used for data recording by the disk drive assembly. The identifying recording is disposed in a reserved region that is accessible by the magnetic transducer of the disk drive. The identifying recording may be read to determine the orientation of the disk in the disk drive and may be read to positively identify the disk to permit repair, recall or data transfer from specifically identified disks without shut down and/or disassembly of the disk drives incorporating the designated disks.
摘要翻译：在磁盘被单盘测试和接受的情况下，在不用于由磁盘驱动器组件进行数据记录的保留区域中，设置唯一地标识磁盘驱动器的磁盘的条形码磁记录图案。识别记录设置在可由磁盘驱动器的磁换能器访问的保留区域中。可以读取识别记录以确定盘在磁盘驱动器中的取向，并且可以读取以便确定地识别磁盘，以允许从专门识别的磁盘进行修复，调用或数据传输，而不关闭和/或拆卸包含的磁盘驱动器指定的磁盘。

6. 发明授权

US06415238B1 Adaptive compensation for arm electronics amplification circuitry of a disk drive system 失效
标题翻译：磁盘驱动器系统的臂电子放大电路的自适应补偿
公开(公告)号：US06415238B1
公开(公告)日：2002-07-02
申请号：US09354503
申请日：1999-07-16
申请人： Hal Hjalmar Ottesen , Gordon James Smith
发明人： Hal Hjalmar Ottesen , Gordon James Smith
IPC分类号： G06F1900
CPC分类号： G11B5/4853 , G11B5/012 , G11B5/09 , G11B5/486 , G11B2005/001 , G11B2005/0016
摘要： An apparatus and method for estimating one or more pole frequencies of an amplifier circuit, such as a readback signal amplifier circuit implemented in an arm electronics module of a data storage system, are disclosed. A bias signal that biases the read transducer is modulated at first and second modulation frequencies while a readback signal is obtained from a data storage medium using the read transducer. The readback signal is communicated to the amplifier, and an output signal of the amplifier circuit is measured at the respective first and second modulation frequencies. The amplifier pole frequency is determined by computing a square impedance measurement ratio using square magnitudes of the bias signal and the amplifier output signal respectively measured at the first and second modulation frequencies.
摘要翻译：公开了一种用于估计诸如在数据存储系统的臂电子模块中实现的回读信号放大器电路的放大器电路的一个或多个极点频率的装置和方法。偏置读取传感器的偏置信号在第一和第二调制频率下被调制，同时使用读取的换能器从数据存储介质获得回读信号。回读信号被传送到放大器，并且在相应的第一和第二调制频率处测量放大器电路的输出信号。通过使用分别在第一和第二调制频率测量的偏置信号和放大器输出信号的平方值计算平方阻抗测量比来确定放大器极点频率。

7. 发明授权

US06067203A Disk drive having optimized spindle speed for environment 失效
标题翻译：磁盘驱动器为环境优化主轴转速
公开(公告)号：US06067203A
公开(公告)日：2000-05-23
申请号：US59549
申请日：1998-04-13
申请人： Hal Hjalmar Ottesen , Gordon J. Smith
发明人： Hal Hjalmar Ottesen , Gordon J. Smith
IPC分类号： G11B19/28 , G11B19/04 , G11B19/26 , G11B15/46
CPC分类号： G11B19/26 , G11B19/04
摘要： A disk storage device in which two or more discrete disk velocities are used is disclosed. The disk velocity is selected using operating environmental conditions. Various types of sensors may be used to detect the environmental conditions or the environmental conditions may be input by a user. The allocation of track locations on a disk into zones reduces the number of zone bit frequencies the storage device must handle when multiple frequency zones are used in connection with the various spindle speeds.
摘要翻译：公开了一种其中使用两个或多个离散盘速度的盘存储装置。使用环境条件选择磁盘速度。可以使用各种类型的传感器来检测环境条件，或者可由用户输入环境条件。将磁盘上的轨道位置分配到区域中减少了当与多种主轴速度结合使用多个频率区域时，存储设备必须处理的区域位频率数。

8. 发明授权

US6031683A Method for optimization of seek and settle performance in hard disk drives 失效
标题翻译：优化硬盘驱动器寻找和安置性能的方法
公开(公告)号：US6031683A
公开(公告)日：2000-02-29
申请号：US990585
申请日：1997-12-15
申请人： David Eugene Iverson , Hal Hjalmar Ottesen , Gordon James Smith , Donald R. Tobie
发明人： David Eugene Iverson , Hal Hjalmar Ottesen , Gordon James Smith , Donald R. Tobie
IPC分类号： G11B5/596
CPC分类号： G11B5/59627
摘要： A method and apparatus for optimizing the seek/settle performance of a storage device. The present invention measures the seek/settle performance for each individual head and selects the heads with the best seek/settle performance, i.e., access performance. The invention includes a processor for calculating velocity deviations for each of the plurality of heads to determine a set of suitable seek heads from the plurality of heads, a head selection circuit for switching from a current head to a preferred head from the set of suitable seek heads and an actuator controller for seeking with the preferred head to a virtual track corresponding to a target track. The processor calculates a preferred/target runout difference for smoothing the settle of the preferred head and the head selection circuit switches from the preferred head to a target head aligned with the target track. The preferred/target runout difference comprises the differences between the runout for the preferred head and the target head for N sectors and the preferred/target runout difference is provided to the actuator controller upon calculation by the processor. The head selection circuit switches from the preferred head to a target head aligned with the target track at a predetermined period before the target head is positioned at the target track. The preferred head is a randomly selected head from the set of suitable seek heads. The head selection circuit switches from the preferred head to a target head aligned with the target track for read operations.
摘要翻译：一种用于优化存储设备的寻找/定位性能的方法和装置。本发明测量每个单独头部的寻找/定位性能，并选择具有最佳寻找/结算性能的头部，即访问性能。本发明包括一个处理器，用于计算多个头中的每一个的速度偏差，以从多个头中确定一组合适的搜索头，一个头选择电路，用于从一组合适的寻道磁头和致动器控制器，用于将优选磁头搜索到对应于目标磁道的虚拟磁道。处理器计算优选/目标跳动差，用于平滑优选头部的稳定，并且头部选择电路从优选头部切换到与目标轨道对准的目标头部。优选/目标跳动差异包括优选头部的跳动与N个扇区的目标头之间的差异，并且优选/目标跳动差异由处理器计算时被提供给致动器控制器。磁头选择电路在目标磁头定位在目标磁道之前的预定时间段内，从优选磁头切换到与目标磁道对准的目标磁头。优选的头部是从一组合适的搜索头中随机选择的头部。磁头选择电路从优选的磁头切换到与目标磁道对准的目标磁头，用于读取操作。

9. 发明授权

US6023384A Data recording device and control apparatus for recording data twice on one track using different encoding methods 失效
标题翻译：数据记录装置和控制装置，用于使用不同的编码方法在一个轨道上记录两次数据
公开(公告)号：US6023384A
公开(公告)日：2000-02-08
申请号：US450513
申请日：1995-05-25
申请人： Nathaniel Carl Anderson , Mohammed Amine Hajji , Hal Hjalmar Ottesen , Michael Joseph Ross
发明人： Nathaniel Carl Anderson , Mohammed Amine Hajji , Hal Hjalmar Ottesen , Michael Joseph Ross
IPC分类号： G11B20/12 , G11B20/18 , H03M13/35 , G11B5/09
CPC分类号： G11B20/1803 , H03M13/35
摘要： A magnetic disk drive includes redundant data written at a plurality of out of phase angular locations to reduce the latency and enhance performance during a read operation. The loss of recording capacity is reduced by increasing the data density to achieve the same soft error rate standard required for single recording. Dual recording also allows different recording codes to be used at the duplicated locations to thereby have the more highly stressed code words occur at different locations in the data to further reduce the possibility of an error. The redundant recording can be used in one portion of the media and normal recording used in another media portion to enable selection of the recording technique in accordance with the type of data being stored. The size of the normal and redundant recording portions can be controlled by the format operation and the user of the disk drive can intervene to designate the size of the redundant and normal media recording portions effected during the format operation.
摘要翻译：磁盘驱动器包括写入多个异相角位置的冗余数据，以减少在读取操作期间的延迟并增强性能。通过增加数据密度来实现单记录所需的相同的软错误率标准，可以减少记录容量的损失。双重记录还允许在复制位置使用不同的记录代码，从而在数据中的不同位置处产生更高压力的代码字，以进一步降低错误的可能性。冗余记录可以用于媒体的一部分和在另一媒体部分中使用的正常记录，以使得能够根据所存储的数据类型选择记录技术。可以通过格式化操作来控制正常和冗余的记录部分的大小，并且磁盘驱动器的用户可以介入以指定在格式化操作期间实现的冗余和通常的媒体记录部分的大小。

10. 发明授权

US5936788A Method and apparatus for ramp load and unload 失效
公开(公告)号：US5936788A
公开(公告)日：1999-08-10
申请号：US118448
申请日：1998-07-17
申请人： Zine-Eddine Boutaghou , Earl Albert Cunningham , Hal Hjalmar Ottesen
发明人： Zine-Eddine Boutaghou , Earl Albert Cunningham , Hal Hjalmar Ottesen
IPC分类号： G11B21/12 , G11B5/54 , G11B21/02 , G11B21/22
CPC分类号： G11B21/12 , G11B21/02 , G11B21/22 , G11B5/54
摘要： Disclosed is a disk drive having at least one disk for storing data. The disk drive includes at least one transducer for reading or writing data to or from the disk. The transducer is attached to an actuator which positions the transducer with respect to the disk. The actuator includes a controllable motor which is used to move the actuator and the transducer attached thereto. The disk drive also includes a ramp for off loading the transducer or for parking the transducer off of the surface of the disk. Also disclosed is apparatus and methods for measuring and controlling the movement of the actuator and attached transducer while the transducer is coming from a position off of the ramp and onto the surface of the disk.

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