公开(公告)号：US06977794B1

公开(公告)日：2005-12-20

申请号：US09905563

申请日：2001-07-13

申请人： Yu Sun ,  Mark Rice ,  Don Brunnett

发明人： Yu Sun ,  Mark Rice ,  Don Brunnett

IPC分类号： G11B5/55 ,  G11B5/596 ,  G11B21/02

CPC分类号： G11B5/5526 ,  G11B5/5547

摘要： A disk drive having a control system which adjusts seek velocity profiles is disclosed. The seek velocity profile is adjusted based on the direction of the seek and the location of the target track. If the seek is away from the ramp, the seek velocity profile is not adjusted. If the seek is toward the ramp, the control system determines the location of the target track. If the target track is within a predefined distance of the ramp, and the transducer velocity exceeds a predetermined velocity, the seek velocity profile is adjusted to limit the deceleration current. The adjustment may be a preset factor, or may be a variable factor depending upon the distance from the target track to the ramp.

摘要翻译： 公开了一种具有调整寻道速度分布的控制系统的磁盘驱动器。 根据寻道方向和目标轨迹的位置来调整寻道速度分布。 如果寻道远离斜坡，寻道速度曲线不被调整。 如果寻道朝向坡道，则控制系统确定目标轨道的位置。 如果目标轨迹在斜坡的预定距离内，并且换能器速度超过预定速度，则调整寻道速度曲线以限制减速电流。 调整可以是预设因子，或者可以是根据从目标轨道到斜坡的距离的可变因子。

公开(公告)号：US07154690B1

公开(公告)日：2006-12-26

申请号：US11110097

申请日：2005-04-19

申请人： Don Brunnett ,  John Purkett ,  Bruce Liikanen

发明人： Don Brunnett ,  John Purkett ,  Bruce Liikanen

IPC分类号： G11B19/04

CPC分类号： G11B5/5582 ,  G11B5/596 ,  G11B19/04

摘要： Dynamically detecting off-track errors in a disk drive by adjusting transducer head position control parameters in response to shock events. In an embodiment, shock events with large magnitude trigger a severe shock timer which lengthens the write fault before write operations resume. In another embodiment, a lower shock threshold is used following an initial shock event. In yet another embodiment, a lower shock threshold is used if an accumulated average position error of the transducer head is large.

摘要翻译： 通过根据冲击事件调整换能器头部位置控制参数来动态地检测磁盘驱动器中的偏离磁道错误。 在一个实施例中，具有大幅度的冲击事件触发严重的冲击计时器，其在写入操作恢复之前延长写入故障。 在另一个实施例中，在初始冲击事件之后使用较低的冲击阈值。 在另一个实施例中，如果换能器头的累积的平均位置误差较大，则使用较低的冲击阈值。

公开(公告)号：US07050260B1

公开(公告)日：2006-05-23

申请号：US10293904

申请日：2002-11-12

申请人： David M. Tung ,  Lin Guo ,  Don Brunnett

发明人： David M. Tung ,  Lin Guo ,  Don Brunnett

IPC分类号： G11B21/02

CPC分类号： G11B5/59633 ,  G11B5/59666

摘要： A method and apparatus for partial self-servo writing a disk surface in a disk drive using servo wedge propagation is provided. In one embodiment, servo information is written by a servo track writer near an outer diameter of the disk surface. The servo information is grouped into a 1× set of servo information and a 2× set of servo information. The disk drive's read head is used to read the 1× set of servo information in order to position the disk drive's write head to write servo information which is radially-aligned with the 2× set of servo information. Then, the disk drive's read head is used to read the 2× set of servo information in order to position the disk drive's write head to write servo information which is radially-aligned with the 1× set of servo information. The process is repeated on a track-by-track basis until servo information is written from the outer diameter of the disk surface to the inner diameter of the disk surface, as if it was entirely written by a servo track writer.

摘要翻译： 提供了一种使用伺服楔形传播将部分自伺服写入盘驱动器中的盘表面的方法和装置。 在一个实施例中，伺服信息由靠近盘表面的外径的伺服轨迹写入器写入。 伺服信息分为1组伺服信息和2组伺服信息。 磁盘驱动器的读取头用于读取1x组伺服信息，以便将磁盘驱动器的写入头定位成与2组伺服信息径向对齐的伺服信息。 然后，磁盘驱动器的读取头用于读取2组伺服信息，以便将磁盘驱动器的写入头定位成写入与1组伺服信息径向对齐的伺服信息。 在逐个轨道的基础上重复该过程，直到从盘表面的外径到盘表面的内径写入伺服信息为止，就好像完全由伺服记录器写入。

公开(公告)号：US08065481B1

公开(公告)日：2011-11-22

申请号：US10828098

申请日：2004-04-20

申请人： Bernhard Hiller ,  Pantelis Alexopoulos ,  Don Brunnett ,  Chandra Buddhavaram ,  Thierry Chatard ,  David Chew ,  Samuel R. Duell ,  Jeff Griffiths ,  Johanna Hernandez ,  Robert L. Kimball ,  Eric Kvamme ,  LeRoy Leach ,  Michael Lee ,  James McGrath ,  Kathleen Fitzgerald, legal representative ,  Robert Milby ,  Bruce Schardt ,  Maurice Schlumberger ,  Erhard Schreck ,  Richard Sonnenfeld

发明人： Bernhard Hiller ,  Pantelis Alexopoulos ,  Don Brunnett ,  Chandra Buddhavaram ,  Thierry Chatard ,  David Chew ,  Samuel R. Duell ,  Jeff Griffiths ,  Johanna Hernandez ,  Robert L. Kimball ,  Eric Kvamme ,  LeRoy Leach ,  Michael Lee ,  James McGrath ,  Robert Milby ,  Bruce Schardt ,  Maurice Schlumberger ,  Erhard Schreck ,  Richard Sonnenfeld

IPC分类号： G06F12/00

CPC分类号： G06F3/0659 ,  G06F3/0611 ,  G06F3/0689 ,  G06F11/2023

摘要： A RAID system is provided which can be implemented as a hardware RAID system while avoiding certain shortcomings of previous RAID systems. The RAID system makes it possible to avoid or reduce the number of buffers or processors and can take advantage of drive logic to achieve RAID functions or enhancements. RAID functionality can be provided in a manner to accommodate one or more ATA drive interfaces. To avoid drive replacement problems, host requests for drive serial numbers are responded to with a mirror serial number. In one embodiment, the read address is used to select which drive will perform a read operation.

摘要翻译： 提供RAID系统，可以实现为硬件RAID系统，同时避免以前的RAID系统的某些缺点。 RAID系统可以避免或减少缓冲区或处理器的数量，并且可以利用驱动逻辑来实现RAID功能或增强功能。 可以以适应一个或多个ATA驱动器接口的方式提供RAID功能。 为了避免驱动器更换问题，驱动器序列号的主机请求使用镜像序列号进行响应。 在一个实施例中，读取地址用于选择哪个驱动器将执行读取操作。

公开(公告)号：US07974029B2

公开(公告)日：2011-07-05

申请号：US12533950

申请日：2009-07-31

申请人： Chun Sei Tsai ,  Sang Huynh ,  Anthony L. Pei ,  Don Brunnett ,  Jahangir John Kasraee ,  Kent W. Gibbons

发明人： Chun Sei Tsai ,  Sang Huynh ,  Anthony L. Pei ,  Don Brunnett ,  Jahangir John Kasraee ,  Kent W. Gibbons

IPC分类号： G11B27/36

CPC分类号： G11B5/012 ,  G11B2020/1869 ,  G11B2220/2516

摘要： A disk drive is disclosed comprising a disk comprising a plurality of tracks, and a head actuated over the disk. A plurality of refresh zones are defined, wherein each refresh zone corresponds to a plurality of the tracks. Data is written to a first refresh zone, and a first zone counter is updated for a second refresh zone at a first rate. Data is written to a third refresh zone, and the first zone counter is updated for the second refresh zone at a second rate different than the first rate.

摘要翻译： 公开了一种磁盘驱动器，包括包括多个轨道的盘，以及在盘上致动的头。 定义多个刷新区域，其中每个刷新区域对应于多个轨道。 将数据写入第一刷新区域，并以第一速率更新第一刷新区域的第一区域计数器。 数据被写入第三刷新区域，并且以与第一刷新区域不同的第二速率对第二刷新区域更新第一区域计数器。

公开(公告)号：US07502205B1

公开(公告)日：2009-03-10

申请号：US10859919

申请日：2004-06-03

申请人： Tony Hurtado ,  Wentao Yan ,  Lin Guo ,  Chris Hawks ,  Don Brunnett ,  Thao Nguyen ,  Richard Oswald ,  Erhard Schreck

发明人： Tony Hurtado ,  Wentao Yan ,  Lin Guo ,  Chris Hawks ,  Don Brunnett ,  Thao Nguyen ,  Richard Oswald ,  Erhard Schreck

IPC分类号： G11B21/02 ,  G11B5/55

CPC分类号： G11B5/6005 ,  G11B5/02 ,  G11B5/6064 ,  G11B5/607 ,  G11B2005/0005

摘要： A control source and drivers for a thermal actuator fly height controlled heads in a disk drive system includes provisions for driving a heater element to dissipate various levels of power, and thus actuate the head by a desired amount, depending on whether the head is in a write mode or a read mode. Further, overshoot and undershoot are achieved as desired by providing initial values and equilibrium values and through the use of a control capacitor to provide a time constant to the drive signal to the heater element.

摘要翻译： 磁盘驱动系统中用于热致动器飞高度控制头的控制源和驱动器包括用于驱动加热器元件以消散各种电平的装置的装置，并且因此根据头部是否在头部 写入模式或读取模式。 此外，通过提供初始值和平衡值以及通过使用控制电容器来向加热器元件提供驱动信号的时间常数来实现根据需要实现过冲和下冲。

公开(公告)号：US06924952B1

公开(公告)日：2005-08-02

申请号：US09923910

申请日：2001-08-06

申请人： Don Brunnett ,  Uwe Schwiegelshohn ,  Steve McCarthy

发明人： Don Brunnett ,  Uwe Schwiegelshohn ,  Steve McCarthy

IPC分类号： G06F3/06 ,  G11B5/09 ,  G11B20/10 ,  G11B20/12 ,  G11B27/36

CPC分类号： G06F3/0619 ,  G06F3/064 ,  G06F3/0674 ,  G11B5/09 ,  G11B20/10 ,  G11B20/1252 ,  G11B27/36 ,  G11B2020/1222 ,  G11B2020/1232 ,  G11B2220/20 ,  G11B2220/2516

摘要： A method and apparatus for increasing formatting efficiency of a disk drive is disclosed. In one embodiment, a method for storing data in a disk drive is provided. The disk drive is coupled to a computer via an interface. The method includes the steps of storing data on a disk surface in a disk block having a predetermined length; and, presenting data from the disk drive to the interface as a host block having a predetermined length, wherein the predetermined length of the disk block is equal to N times the predetermined length of the host block, where N is a natural number greater than 1. In one embodiment, a read/modify/write procedure is provided to ensure that data is not lost when a power failure occurs during a write operation when the number of host blocks being written is not a multiple of N.

摘要翻译： 公开了一种用于提高磁盘驱动器的格式化效率的方法和装置。 在一个实施例中，提供了一种用于将数据存储在磁盘驱动器中的方法。 磁盘驱动器经由接口耦合到计算机。 该方法包括以下步骤：将数据存储在具有预定长度的盘块中的盘表面上; 并且将来自磁盘驱动器的数据呈现为具有预定长度的主机块的接口，其中盘块的预定长度等于主机块的预定长度的N倍，其中N是大于1的自然数 在一个实施例中，提供读/修改/写入过程以确保在写入操作期间发生电源故障时数据不会丢失，当正在写入的主机块的数量不是N的倍数时。

公开(公告)号：US06882489B1

公开(公告)日：2005-04-19

申请号：US09639567

申请日：2000-08-15

申请人： Don Brunnett ,  John Purkett ,  Bruce Liikanen

发明人： Don Brunnett ,  John Purkett ,  Bruce Liikanen

IPC分类号： G11B5/55 ,  G11B5/596 ,  G11B15/04 ,  G11B15/087 ,  G11B19/04

CPC分类号： G11B5/5582 ,  G11B5/596 ,  G11B19/04

摘要： A method and apparatus for dynamically detecting write fault errors is provided. According to the invention, transducer head control parameters are adjusted according to observed events. For instance, off-track events of a certain magnitude may trigger the implementation of a severe shock timer, which lengthens the delay between the off-track event and allowing write operations to resume, as compared to the standard off-track timer. According to another embodiment of the present invention, a lower write fault threshold is implemented following an off-track event of sufficient magnitude. According to yet another embodiment of the present invention, the average or accumulated position error of the transducer head is monitored, and a lower write fault threshold implemented if the average position error exceeds a threshold value. The present invention's provision of a method and apparatus that enables transducer head control parameters to be modified in response to observed off-track events allows the disk drive to provide high resistance to data loss without significant detrimental effects on the data throughput performance of the disk drive.

摘要翻译： 提供了用于动态检测写入故障错误的方法和装置。 根据本发明，根据观察到的事件来调整传感器头控制参数。 例如，与标准离线定时器相比，具有一定幅度的偏离轨迹事件可能触发实施严重的冲击定时器，其延长了偏离轨道事件之间的延迟并允许写入操作恢复。 根据本发明的另一个实施例，在足够大的偏离轨迹事件之后实现较低写入故障阈值。 根据本发明的另一个实施例，监测换能器头的平均或累积的位置误差，并且如果平均位置误差超过阈值，则实现较低的写入故障阈值。 本发明提供一种能够响应于观察到的偏离轨道事件来修改传感器头部控制参数的方法和装置，使得磁盘驱动器能够对数据丢失提供高抵抗力，而不会对磁盘​​驱动器的数据吞吐量性能造成显着的不利影响 。

公开(公告)号：US06792517B1

公开(公告)日：2004-09-14

申请号：US10173560

申请日：2002-06-18

申请人： Don Brunnett ,  Erhard Schreck

发明人： Don Brunnett ,  Erhard Schreck

IPC分类号： G06F1200

CPC分类号： G06F11/1456 ,  Y10S707/99953 ,  Y10S707/99955

摘要： A personal computer hard disk has disk media that comprises a primary portion and a backup portion; both portions are in the same hard disk housing. The backup portion is logically separate from the primary portion, and access to the logically separate backup portion is controlled by a backup access control mechanism. The backup access control mechanism may comprise a manually-actuable mechanism, such as a switch or a jumper, or it may comprise software provided in an ROM forming part of the internal memory of the hard disk.

摘要翻译： 个人计算机硬盘具有包括主要部分和备用部分的盘介质; 两部分都在相同的硬盘外壳中。 备份部分在逻辑上与主要部分分离，对逻辑上独立的备份部分的访问由备份访问控制机制控制。 备用存取控制机构可以包括诸如开关或跳线的手动致动机构，或者它可以包括提供在形成硬盘的内部存储器的一部分的ROM中的软件。

公开(公告)号：US08665546B1

公开(公告)日：2014-03-04

申请号：US12684045

申请日：2010-01-07

申请人： Hongchao Tim Zhao ,  Jiangang Liang ,  Yilin Cai ,  Don Brunnett

发明人： Hongchao Tim Zhao ,  Jiangang Liang ,  Yilin Cai ,  Don Brunnett

IPC分类号： G11B21/02

CPC分类号： G11B5/6076 ,  G11B5/607

摘要： A disk drive is disclosed comprising a disk, a head for writing data to the disk, and control circuitry coupled to the head. The control circuitry is operable to determine a first set of fly height values and determine a threshold based on the first set of fly height values. The control circuitry determines a second set of fly height values, adjusts the threshold based on the second set of fly height values, and detects a head characteristic based on the adjusted threshold. The head characteristic is detected by detecting a head touchdown event and/or detecting contamination related to the head based on the adjusted threshold.

摘要翻译： 公开了一种磁盘驱动器，其包括盘，用于将数据写入盘的头和耦合到头的控制电路。 控制电路可操作以确定第一组飞行高度值，并基于第一组飞行高度值确定阈值。 控制电路确定第二组飞行高度值，基于第二组飞行高度值来调整阈值，并且基于经调整的阈值检测头部特性。 通过基于经调整的阈值检测头部触地事件和/或检测与头部相关的污染物来检测头部特性。