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1. 发明授权

US08179626B1 Adaptive shock detection 有权
标题翻译：自适应冲击检测
公开(公告)号：US08179626B1
公开(公告)日：2012-05-15
申请号：US12631716
申请日：2009-12-04
申请人： Robert P. Ryan , Don Brunnett , Alain Chahwan , Duc T. Phan
发明人： Robert P. Ryan , Don Brunnett , Alain Chahwan , Duc T. Phan
IPC分类号： G11B27/36
CPC分类号： G11B5/5582 , G11B19/042
摘要： Adaptive shock detection systems are provided according to various embodiments of the present invention. In one embodiment, an adaptive shock detection system comprises a shock sensing circuit, and a controller configured to receive shock detection signals from the shock sensing circuit and to dynamically adjust a sensitivity of the shock sensing circuit based the received shock detection signals.
摘要翻译：根据本发明的各种实施例提供自适应冲击检测系统。在一个实施例中，自适应冲击检测系统包括冲击检测电路和被配置为从冲击感测电路接收冲击检测信号并且基于所接收的冲击检测信号动态地调整冲击感测电路的灵敏度的控制器。

2. 发明申请

US20080030894A1 SERVO WRITING WITH OFFSET COMPENSATION FOR PREWRITTEN REFERENCE 有权
标题翻译： SERVO写入偏移补偿用于PREWRITTEN参考
公开(公告)号：US20080030894A1
公开(公告)日：2008-02-07
申请号：US11740747
申请日：2007-04-26
申请人： YU SUN , Dave McMurtrey , Bruce Liikanen , Don Brunnett , John VanLaanen , Charles Watt , Stanley Shepherd , S. Smith , Todd Franks , Lin Guo
发明人： YU SUN , Dave McMurtrey , Bruce Liikanen , Don Brunnett , John VanLaanen , Charles Watt , Stanley Shepherd , S. Smith , Todd Franks , Lin Guo
IPC分类号： G11B17/08
CPC分类号： G11B25/043 , G11B5/59627 , G11B5/59661 , G11B5/59666
摘要： In accordance with various embodiments, a rotatable member is mounted to a spindle hub so that initial servo data previously provided to the rotatable member are eccentrically offset with respect to a rotational center of the spindle hub. Compensation vales are determined to characterize said offset, after which final servo data are provided to the rotatable member in relation to the initial servo data and the determined compensation values. The final servo data are nominally concentric with the rotational center of the spindle hub.
摘要翻译：根据各种实施例，可旋转构件安装到主轴毂，使得先前提供给可旋转构件的初始伺服数据相对于主轴毂的旋转中心偏心偏移。确定补偿值以表征所述偏移，之后相对于初始伺服数据和确定的补偿值将最终伺服数据提供给可旋转构件。最终伺服数据名义上与主轴毂的旋转中心同心。

3. 发明授权

US07154690B1 Dynamic shock detection in disk drive using accumulated average position error 失效
标题翻译：磁盘驱动器中的动态震动检测使用累积的平均位置误差
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。

4. 发明授权

US07050260B1 Method and apparatus for partial self-servo writing using servo wedge propagation 有权
标题翻译：使用伺服楔形传播的部分自伺服写入的方法和装置
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。

5. 发明授权

US06785080B1 Method and apparatus for providing a variable rate oversampling digital filter for resonance compensation in disk drive servo control systems 有权
标题翻译：用于在盘驱动器伺服控制系统中提供用于共振补偿的可变速率过采样数字滤波器的方法和装置
公开(公告)号：US06785080B1
公开(公告)日：2004-08-31
申请号：US09974454
申请日：2001-10-09
申请人： Yu Sun , Don Brunnett , XiaoPing Hu
发明人： Yu Sun , Don Brunnett , XiaoPing Hu
IPC分类号： G11B2102
CPC分类号： G11B5/59622
摘要： A method and apparatus for controlling the position of a disk drive transducer head relative to a target track are provided. An oversampled control output allows frequencies that are higher than the Nyquist frequency of the servo control system to be filtered. The system initiates a plurality of control outputs during a single sampling period, allowing the use of a single processor interrupt for each sampling period. The outputs initiated during a single sampling period may be of unequal length. In addition, the outputs may be proportioned so that the total control energy provided to the actuator is equal to the control energy that would be provided by control outputs initiated every one-half sampling period.
摘要翻译：提供了一种用于控制盘驱动器换能器头相对于目标轨道的位置的方法和装置。过采样控制输出允许高于伺服控制系统的奈奎斯特频率的频率进行滤波。系统在单个采样周期内启动多个控制输出，允许在每个采样周期使用单个处理器中断。在单个采样周期期间发起的输出可能具有不相等的长度。此外，输出可以成比例，使得提供给致动器的总控制能量等于由每半个采样周期启动的控制输出将提供的控制能量。

6. 发明授权

US06714376B1 Partial servo write fill in 有权
标题翻译：部分伺服写入
公开(公告)号：US06714376B1
公开(公告)日：2004-03-30
申请号：US09905564
申请日：2001-07-13
申请人： Don Brunnett , Lloyd Levy
发明人： Don Brunnett , Lloyd Levy
IPC分类号： G11B2102
CPC分类号： G11B5/59633
摘要： A method and apparatus for writing servo information to disks within a disk drive is disclosed. A servo track writer is used to write first servo information to the disks. The disk drive is then sealed, and the read/write heads within the disk drive are used to fill in second servo information. The first servo information includes digital information and A, B, C, and D servo bursts for a first number of tracks on the disks. The first servo information also includes digital information and A and B servo bursts for the remaining tracks on the disks. After the disk drive is sealed in the manufacturing process, the read/write heads within the disk drive fill in the second servo information, which includes C and D servo bursts for the remaining tracks. The read head reads the first servo information in the first number of tracks, and the position of the write head is adjusted based on the first servo information. The write head is then used to write the second servo information to a first remaining track, resulting in complete servo information for the first remaining track. The read head then reads the complete servo information in the first remaining track, and writes the second servo information for a second remaining track. This continues until the complete servo information is propagated to all of the remaining tracks.
摘要翻译：公开了一种将伺服信息写入盘驱动器内的盘的方法和装置。伺服记录器用于将第一伺服信息写入磁盘。然后将磁盘驱动器密封，并且使用盘驱动器内的读/写磁头来填充第二伺服信息。第一伺服信息包括磁盘上的第一数目磁道的数字信息和A，B，C和D伺服脉冲串。第一伺服信息还包括用于磁盘上剩余磁道的数字信息和A和B伺服脉冲串。在制造过程中密封磁盘驱动器之后，磁盘驱动器内的读/写磁头填充第二伺服信息，其中包括用于剩余磁道的C和D伺服脉冲串。读取头读取第一数量的磁道中的第一伺服信息，并且基于第一伺服信息来调整写入头的位置。然后使用写头将第二伺服信息写入第一剩余磁道，从而产生用于第一剩余磁道的完整伺服信息。然后，读取头读取第一剩余轨道中的完整伺服信息，并写入第二剩余轨道的第二伺服信息。这将继续，直到完整的伺服信息传播到所有剩余的轨道。

7. 发明授权

US08065481B1 RAID system and method compatible with improved drive select 失效
标题翻译： RAID系统和方法与改进的驱动器选择兼容
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。

8. 发明授权

US07974029B2 Disk drive biasing refresh zone counters based on write commands 有权
标题翻译：基于写入命令的磁盘驱动器偏置刷新区域计数器
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。

9. 发明授权

US07502205B1 Method of operating read and write transducers by controlling thermal actuation 有权
标题翻译：通过控制热驱动来读写换能器的方法
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。

10. 发明授权

US07167336B1 Method for providing variable gain, iterative embedded runout correction in a disk drive 有权
标题翻译：在磁盘驱动器中提供可变增益，迭代嵌入的跳动校正的方法
公开(公告)号：US07167336B1
公开(公告)日：2007-01-23
申请号：US10410576
申请日：2003-04-08
申请人： Richard M. Ehrlich , Don Brunnett , Yu Sun
发明人： Richard M. Ehrlich , Don Brunnett , Yu Sun
IPC分类号： G11B5/596
CPC分类号： G11B5/59627
摘要： A method for determining embedded runout correction (ERC) values using iteration and variable gain in a disk drive. A disk has a track written thereon, an ERC value is determined for a servo sector on the track using variable gain, and the variable gain decreases based on the number of revolutions of the disk.
摘要翻译：一种使用磁盘驱动器中的迭代和可变增益来确定嵌入式跳动校正（ERC）值的方法。磁盘具有写入的轨道，使用可变增益确定轨道上的伺服扇区的ERC值，并且可变增益基于盘的转数而减小。

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