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11. 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。

12. 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。

13. 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。

14. 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。

15. 发明授权

US07054096B1 Method and apparatus for determining embedded runout correction values 有权
标题翻译：确定嵌入式跳动校正值的方法和装置
公开(公告)号：US07054096B1
公开(公告)日：2006-05-30
申请号：US10338047
申请日：2003-01-06
申请人： Yu Sun , Lin Guo , Don Brunnett
发明人： Yu Sun , Lin Guo , Don Brunnett
IPC分类号： G11B5/596
CPC分类号： G11B5/59627 , G11B5/59633 , G11B5/59666
摘要： A method and apparatus for compensating for non-linearities due to pivot bearing friction when determining embedded runout correction values during partial self-servo write of a disk drive is disclosed. In one embodiment, the disk drive includes a disk surface having a track written thereon and the track has some written-in runout. The written-in runout that is associated with high-frequencies is determined using a first technique. The written-in runout for the track that is associated with low frequencies is determined using a second technique. Results from the two techniques are combined in order to determine embedded runout correction values for the track when partial self-servo writing, in order to reduce error propagation when writing additional tracks.
摘要翻译：公开了一种在磁盘驱动器的部分自伺服写入期间确定嵌入的跳动校正值时补偿由于枢转轴承摩擦导致的非线性的方法和装置。在一个实施例中，盘驱动器包括具有写在其上的轨道的盘表面，并且轨道具有一些写入的跳动。使用第一技术确定与高频相关联的写入跳动。使用第二种技术确定与低频相关的轨道的写入跳动。组合两种技术的结果，以便在部分自伺服写入时确定轨道的嵌入式跳动校正值，以便在写入附加轨道时减少误差传播。

16. 发明授权

US06924952B1 Method and apparatus for data storage in a disk drive 有权
标题翻译：数据存储在磁盘驱动器中的方法和装置
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。

17. 发明授权

US06882489B1 Dynamic off-track detector 失效
标题翻译：动态离轨检测器
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。

18. 发明授权

US08665546B1 Adaptive threshold for detecting touchdown or contamination 有权
标题翻译：用于检测触地或污染的自适应阈值
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。

19. 发明授权

US08626971B1 Flash memory method and apparatus with single-press button response 有权
标题翻译：具有单按钮响应的闪存方式和设备
公开(公告)号：US08626971B1
公开(公告)日：2014-01-07
申请号：US11249044
申请日：2005-10-11
申请人： Mike Lee , Faheem Dani , Don Brunnett , Prokash Sinha
发明人： Mike Lee , Faheem Dani , Don Brunnett , Prokash Sinha
IPC分类号： G06F13/00 , G06F13/12 , G06F13/38 , G11B21/10
CPC分类号： G06F13/28 , G06F3/067 , G06F11/3065 , G06F13/10 , G06F13/385
摘要： A flash memory device apparatus and method is provided such that data or programming information is uploaded or downloaded between the flash memory device and a host, in response to a single-press of a button associated with the flash memory device. The system can facilitate a number of operations including saving an active window application or associated data, transferring media files to or from media players, providing device-specific and/or data-specific transfer of applications or data and/or providing protection of transferred data or applications.
摘要翻译：响应于单按与闪存设备相关联的按钮，闪存设备设备和方法被提供为使得数据或节目信息被上载或下载在闪存设备和主机之间。该系统可以促进许多操作，包括保存活动窗口应用程序或相关联的数据，向媒体播放器传送媒体文件或从媒体播放器传送媒体文件，提供应用或数据的设备特定和/或数据特定传输和/或提供传输数据的保护或应用程序。

20. 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。

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