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1. 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.

2. 发明授权

US5831786A Disk drive having position sensor for ramp load and unload, and method for its use 失效
标题翻译：具有用于斜坡加载和卸载的位置传感器的磁盘驱动器及其使用方法
公开(公告)号：US5831786A
公开(公告)日：1998-11-03
申请号：US922115
申请日：1997-08-28
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.
摘要翻译：公开了一种具有至少一个用于存储数据的盘的磁盘驱动器。磁盘驱动器包括至少一个读取或写入数据到磁盘的传感器。传感器连接到将换能器相对于盘定位的致动器。致动器包括可控马达，其用于移动致动器和连接到其上的换能器。磁盘驱动器还包括用于卸载换能器或将换能器从盘的表面停放的斜坡。还公开了一种装置和方法，用于测量和控制致动器和连接的换能器的运动，同时换能器来自斜坡的位置并且到达盘的表面。

3. 发明授权

US5732215A System for equalizing operating temperature by allocating infrequently accessed data to the high temperature DASD and allocating frequently accessed data to the low temperature DASD 失效
标题翻译：通过将不常访问的数据分配给高温DASD并将经常访问的数据分配给低温DASD来均衡操作温度的系统
公开(公告)号：US5732215A
公开(公告)日：1998-03-24
申请号：US482821
申请日：1995-06-07
申请人： Zine-Eddine Boutaghou , Hal Hjalmar Ottesen
发明人： Zine-Eddine Boutaghou , Hal Hjalmar Ottesen
IPC分类号： G06F1/20 , G06F3/06 , G11B25/04 , G11B33/14 , G06F13/00
CPC分类号： G06F3/0616 , G06F3/0647 , G06F3/0689
摘要： An array of direct access storage devices (DASD's) such as disk drive units includes a temperature sensor for sensing the operating temperature of each DASD. The operating temperatures of the DASD's of the array are equalized by allocating frequently accessed data to drives with relatively low operating temperature and allocating infrequently accessed data to drives with relatively high operating temperatures. Operating temperature information is used to identify a DASD that has a high probability of failure and the DASD can be shut down for replacement prior to actual failure by moving all data from that DASD to one or more other DASD's of the array.
摘要翻译：诸如磁盘驱动器单元的直接访问存储设备（DASD）阵列包括用于感测每个DASD的工作温度的温度传感器。通过将经常访问的数据分配到具有较低工作温度的驱动器并将不常访问的数据分配给具有较高工作温度的驱动器，来平衡阵列的DASD的工作温度。工作温度信息用于识别具有高故障概率的DASD，并且可以通过将该DASD中的所有数据移动到阵列的一个或多个其他DASD来在实际故障之前关闭DASD进行更换。

4. 发明授权

US5973870A Adaptive and in-situ load/unload damage estimation and compensation 失效
标题翻译：自适应和原位装载/卸载损伤估计和补偿
公开(公告)号：US5973870A
公开(公告)日：1999-10-26
申请号：US762509
申请日：1996-12-10
申请人： Zine-Eddine Boutaghou , Hal Hjalmar Ottesen , Gordon James Smith
发明人： Zine-Eddine Boutaghou , Hal Hjalmar Ottesen , Gordon James Smith
IPC分类号： G11B19/04 , G06F11/00 , G11B5/09 , G11B5/54 , G11B20/18 , G11B21/02 , G11B21/12 , G11B21/22
CPC分类号： G11B5/54 , G11B19/04 , G11B20/1816 , G11B20/1879 , G11B21/12 , G11B21/22
摘要： The present invention overcomes the problems that accompany the use of ramps to load and unload transducer carrying sliders in rigid magnetic disk data storage devices. The tracks in the region where the slider loads and unloads are read and the errors recorded following each slider loading operation. One technique is to track the error increase and identify imminent device failure when the rate of error increase during a given number of the most recent slider load cycles exceeds a threshold value. In another mode, a dedicated sequence of tracks is recorded at an increased linear density to assure that read errors occur to enable a more effective comparative evaluation. This makes possible a two stage evaluation, a first threshold number of errors indicative of degrading performance which initiates lower actuator velocity to inhibit further degradation and a second threshold error quantity that indicates imminent catastrophic failure and triggers a warning to the system user. To make the analysis more meaningful, certain errors may be ignored, such as simpler errors or the full number of errors in a cluster that may be the result of a single event.
摘要翻译：本发明克服了使用斜坡在刚性磁盘数据存储装置中装载和卸载传感器携带滑块的问题。读取滑块加载和卸载的区域中的轨迹，并在每个滑块加载操作之后记录错误。一种技术是在给定数量的最近的滑块加载循环中的错误增加率超过阈值时跟踪错误增加并识别即将发生的设备故障。在另一种模式中，以增加的线性密度记录专用的磁道序列，以确保发生读取错误以实现更有效的比较评估。这使得可以进行两阶段评估，指示降级性能的第一阈值数量的错误，其启动较低的致动器速度以抑制进一步劣化，以及指示即将发生的灾难性故障并触发对系统用户的警告的第二阈值误差量。为了使分析更有意义，可能会忽略某些错误，例如可能是单个事件的结果的更简单的错误或集群中的完整数量的错误。

5. 发明授权

US6005742A Method and apparatus for controlling a multiple-stage actuator for a disk drive 失效
标题翻译：用于控制磁盘驱动器的多级致动器的方法和装置
公开(公告)号：US6005742A
公开(公告)日：1999-12-21
申请号：US116745
申请日：1998-07-16
申请人： Earl Albert Cunningham , Long-Sheng Fan , Hal Hjalmar Ottesen , Timothy Clark Reiley
发明人： Earl Albert Cunningham , Long-Sheng Fan , Hal Hjalmar Ottesen , Timothy Clark Reiley
IPC分类号： G11B5/55 , G11B5/596 , G11B7/085 , G11B7/09 , G11B21/08
CPC分类号： G11B7/0901 , G11B21/085 , G11B5/5552 , G11B5/5556 , G11B5/59605 , G11B5/59627 , G11B7/08505 , G11B7/08576 , G11B7/0937 , G11B7/0945
摘要： A method and apparatus for controlling a multiple-stage actuator for a disk drive which does not require an additional sensor for measuring the relative position between adjacent actuator stages. In a two-stage actuator system, a position-type secondary actuator (SA) rides piggyback on a primary actuator (PA). The repeatable runout is measured and used as a feedforward signal to the PA. If the PA is a rotary actuator, the feedforward signal is preferably arc corrected for the arc that the head transverses from the inner radius to the outer radius of the disk. Added to the feedforward signal is the moving average of the drive signal applied to the SA. Because the SA is of the position-type having a neutral position, this moving average is proportional to the time cumulative drift present in the two-stage actuator system, and forces the PA in a direction that minimizes deviation of the SA from its neutral position. This minimizes the range requirement for the SA, the main purpose of which is to reduce non-repeatable runout.
摘要翻译：一种用于控制磁盘驱动器的多级致动器的方法和装置，其不需要用于测量相邻致动器级之间的相对位置的附加传感器。在两级致动器系统中，位置型辅助致动器（SA）骑在主致动器（PA）上。可重复的跳动被测量并用作PA的前馈信号。如果PA是旋转致动器，则前馈信号优选地对于磁头从磁盘的内半径到外半径横向旋转的弧线被校正。添加到前馈信号是施加到SA的驱动信号的移动平均值。由于SA是具有中立位置的位置型，因此该移动平均值与两级致动器系统中存在的时间累积漂移成比例，并且迫使PA沿使SA偏离其中立位置的偏差最小的方向。这最小化了SA的范围要求，其主要目的是减少不可重复的跳动。

6. 发明授权

US5854722A Method and apparatus for rotary actuator arc compensation correction in a direct access storage device 失效
公开(公告)号：US5854722A
公开(公告)日：1998-12-29
申请号：US443963
申请日：1995-05-18
申请人： Earl Albert Cunningham , Kevin Jack Erickson , Hal Hjalmar Ottesen
发明人： Earl Albert Cunningham , Kevin Jack Erickson , Hal Hjalmar Ottesen
IPC分类号： G11B5/48 , G11B5/55 , G11B5/596 , G11B21/08 , G11B21/10
CPC分类号： G11B5/59605 , G11B21/083 , G11B21/085 , G11B21/106 , G11B5/5534 , G11B5/59627 , G11B5/59644 , G11B5/59655 , G11B5/59688
摘要： Rotary actuator arc compensation correction method and apparatus are provided for a direct access storage device (DASD). A reference feedforward correction signal is generated at each of a plurality of sectors around a predetermined track on a disk surface. A specific selected track is identified, and both magnitude and phase of the generated reference feedforward correction signal are modified to correct for the arced trajectory caused by the rotary actuator at the specific selected track. Improved actuator servo control is provided by using pseudo sector compensation to interpolate the feedforward correction signal between servo sectors.

7. 发明授权

US5682274A Method and apparatus for positioning transducers to correct for read and write element misregistration offsets which vary dependent on rotary actuator angular position across a disk medium 失效
标题翻译：用于定位换能器以校正读取和写入元件重合失调的方法和装置，其取决于绕盘介质的旋转致动器角位置而变化
公开(公告)号：US5682274A
公开(公告)日：1997-10-28
申请号：US392276
申请日：1995-02-22
申请人： Dana Henry Brown , Earl Albert Cunningham , Kevin Jack Erickson , Richard Hunt Estry , Thomas William Glaser , Mark David Hagen , Hal Hjalmar Ottesen , Dean Curtis Palmer , John Jeffrey Stephenson
发明人： Dana Henry Brown , Earl Albert Cunningham , Kevin Jack Erickson , Richard Hunt Estry , Thomas William Glaser , Mark David Hagen , Hal Hjalmar Ottesen , Dean Curtis Palmer , John Jeffrey Stephenson
IPC分类号： G11B5/48 , G11B5/55 , G11B5/596 , G11B7/08 , G11B21/02 , G11B21/08
CPC分类号： G11B21/083 , G11B21/08 , G11B5/4886 , G11B5/5534 , G11B5/59644 , G11B7/08
摘要： An apparatus and method for correcting for track misregistration when a slider or head assembly contains a separate read element and write element. The offset is determined at a first position and at a second position of the actuator arm assembly. From these offsets a constant and a multiplier are determined for determining an offset as a function of the cylinder location. Also disclosed is a method and apparatus for minimizing distance traveled to prevent misregistration when repositioning between the read element and a write element. The read element is intentionally offset from the write element at an angle so as to minimize the distance traveled across the disk.
摘要翻译：一种用于在滑块或头部组件包含单独的读取元件和写入元件时纠正轨道重合失调的装置和方法。在致动器臂组件的第一位置和第二位置处确定偏移。根据这些偏移，确定常数和乘数以确定作为气缸位置的函数的偏移。还公开了一种用于最小化行进距离以防止在读取元件和写入元件之间重新定位时的重合失调的方法和装置。读取元件有意地以一定角度从写入元件偏移，以便最小化跨越盘的距离。

8. 发明授权

US6002540A Method and apparatus for rotary actuator arc compensation correction in a direct access storage device 失效
标题翻译：直接存取存储装置中的旋转执行器电弧补偿校正方法和装置
公开(公告)号：US6002540A
公开(公告)日：1999-12-14
申请号：US87825
申请日：1998-05-29
申请人： Earl Albert Cunningham , Kevin Jack Erickson , Hal Hjalmar Ottesen
发明人： Earl Albert Cunningham , Kevin Jack Erickson , Hal Hjalmar Ottesen
IPC分类号： G11B5/596 , G11B21/10
CPC分类号： G11B5/59644 , G11B21/106 , G11B5/59605 , G11B5/59655 , G11B5/59688
摘要： Rotary actuator arc compensation correction method and apparatus are provided for a direct access storage device (DASD). A reference feedforward correction signal is generated at each of a plurality of sectors around a predetermined track on a disk surface. A specific selected track is identified, and both magnitude and phase of the generated reference feedforward correction signal are modified to correct for the arced trajectory caused by the rotary actuator at the specific selected track. Improved actuator servo control is provided by using pseudo sector compensation to interpolate the feedforward correction signal between servo sectors.
摘要翻译：为直接存取存储设备（DASD）提供旋转执行器电弧补偿校正方法和装置。在盘表面上的预定轨道周围的多个扇区中的每一个处产生参考前馈校正信号。识别特定的所选轨道，并且修改所生成的参考前馈校正信号的幅度和相位，以校正由特定所选轨道处的旋转致动器引起的弧形轨迹。通过使用伪扇区补偿来在伺服扇区之间内插前馈校正信号来提供改进的致动器伺服控制。

9. 发明授权

US5920441A Method and apparatus for controlling a multiple-stage actuator for a disk drive 失效
公开(公告)号：US5920441A
公开(公告)日：1999-07-06
申请号：US532340
申请日：1995-09-22
申请人： Earl Albert Cunningham , Long-Sheng Fan , Hal Hjalmar Ottesen , Timothy Clark Reiley
发明人： Earl Albert Cunningham , Long-Sheng Fan , Hal Hjalmar Ottesen , Timothy Clark Reiley
IPC分类号： G11B5/55 , G11B5/596 , G11B7/085 , G11B7/09 , G11B21/08
CPC分类号： G11B7/0901 , G11B21/085 , G11B5/5552 , G11B5/5556 , G11B5/59605 , G11B5/59627 , G11B7/08505 , G11B7/08576 , G11B7/0937 , G11B7/0945
摘要： A method and apparatus for controlling a multiple-stage actuator for a disk drive which does not require an additional sensor for measuring the relative position between adjacent actuator stages. In a two-stage actuator system, a position-type secondary actuator (SA) rides piggyback on a primary actuator (PA). The repeatable runout is measured and used as a feedforward signal to the PA. If the PA is a rotary actuator, the feedforward signal is preferably arc corrected for the arc that the head transverses from the inner radius to the outer radius of the disk. Added to the feedforward signal is the moving average of the drive signal applied to the SA. Because the SA is of the position-type having a neutral position, this moving average is proportional to the time cumulative drift present in the two-stage actuator system, and forces the PA in a direction that minimizes deviation of the SA from its neutral position. This minimizes the range requirement for the SA, the main purpose of which is to reduce non-repeatable runout.

10. 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。

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