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1. 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。

2. 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。

3. 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。

4. 发明授权

US07679851B1 Methods and structure for improved disk head switching to avoid zipper zones 有权
标题翻译：改善磁头切换以避免拉链区域的方法和结构
公开(公告)号：US07679851B1
公开(公告)日：2010-03-16
申请号：US11122838
申请日：2005-05-05
申请人： Yu Sun , Don Brunnett , Lin Guo
发明人： Yu Sun , Don Brunnett , Lin Guo
IPC分类号： G11B5/09
CPC分类号： G11B5/59616 , G11B5/012
摘要： Methods and structure for switching heads on a multiple recording surface disk drive that uses bi-directional radial writing toward a zipper zone at a middle diameter. When switching from a first head to a second head, features and aspects hereof assure that the second head will not be positioned in the zipper zone of the corresponding second surface and hence will not lose track following servo synchronization and control. In one aspect, added buffer or guard tracks having valid servo information but no data are added on either side of the zipper zone to assure that under the worst-case misalignment of surfaces the second head will not be positioned in its corresponding zipper zone when switching from the first head.
摘要翻译：在多个记录表面磁盘驱动器上切换磁头的方法和结构，其使用向中间直径的拉链区域进行双向径向书写。当从第一头切换到第二头部时，其特征和方面确保第二头部不会被定位在相应的第二表面的拉链区域中，因此在伺服同步和控制之后不会失去跟踪。在一个方面，在拉链区域的任一侧添加了具有有效的伺服信息而没有数据的附加的缓冲器或保护轨道，以确保在最差的表面未对准的情况下，当切换时，第二头部将不位于相应的拉链区域从第一个头。

5. 发明申请

US20070297088A1 Embedded runout correction based on written-in runout measurement 有权
标题翻译：基于写入跳动测量的嵌入式跳动校正
公开(公告)号：US20070297088A1
公开(公告)日：2007-12-27
申请号：US11724436
申请日：2007-03-15
申请人： Yu Sun , Don Brunnett , Lloyd Levy , Thomas Melrose
发明人： Yu Sun , Don Brunnett , Lloyd Levy , Thomas Melrose
IPC分类号： G11B5/58
CPC分类号： G11B5/59627 , G11B5/59633
摘要： Performing embedded runout correction for a track on a rotational data storage disk includes measuring written-in runout for the track, selecting a number of revolutions in response to the measured written-in runout of the track, calculating embedded correction values for the track for the selected number of revolutions of the rotational data storage disk, and storing the embedded correction values.
摘要翻译：对旋转数据存储盘上的轨道执行嵌入式跳动校正包括测量轨道的写入跳动，响应于轨迹的测量写入跳动选择转数，计算轨道的嵌入校正值选择旋转数据存储盘的转数，并存储嵌入的校正值。

6. 发明授权

US07230789B1 Method and apparatus for performing a self-servo write operation in a disk drive using spiral servo information 有权
标题翻译：在使用螺旋伺服信息的磁盘驱动器中执行自伺服写入操作的方法和装置
公开(公告)号：US07230789B1
公开(公告)日：2007-06-12
申请号：US11102467
申请日：2005-04-08
申请人： Don Brunnett , Yu Sun , Lin Guo
发明人： Don Brunnett , Yu Sun , Lin Guo
IPC分类号： G11B21/02
CPC分类号： G11B5/59633 , G11B5/59661
摘要： The present invention is directed to a method and apparatus for performing a self-servo write operation in a disk drive. In one embodiment, the disk drive includes a disk surface having a read head and a write head associated therewith. Spiral servo information is written onto the disk surface using a servo track writer. The read head reads the spiral servo information and is used to position the write head, which writes a small band of final servo information onto the disk surface. The small band of final servo information may be embedded servo information. Importantly, the small band of final servo information is not written using the servo track writer. The write head is also used to write self-servo write instructions into the small band of final servo information. Subsequently, the self-servo write instructions are read and a self-servo write operation is performed using the spiral servo information.
摘要翻译：本发明涉及一种用于在磁盘驱动器中执行自伺服写入操作的方法和装置。在一个实施例中，盘驱动器包括具有读头的盘表面和与其相关联的写头。使用伺服记录器将螺旋伺服信息写入磁盘表面。读头读取螺旋伺服信息，并用于将写入头定位在磁盘表面上，将写入磁头写入最小伺服信息的一小段。最终伺服信息的小带可以是嵌入式伺服信息。重要的是，最终的伺服信息的小带没有使用伺服记录器写入。写头还用于将自伺服写指令写入最终伺服信息的小波段。随后，读取自伺服写指令，并使用螺旋伺服信息执行自伺服写操作。

7. 发明授权

US07193797B1 Method and apparatus for detecting and monitoring a bi-state head when self-servowriting a disk drive using spiral servo information 有权
标题翻译：当使用螺旋伺服信息自动伺服磁盘驱动器时，用于检测和监视双态磁头的方法和装置
公开(公告)号：US07193797B1
公开(公告)日：2007-03-20
申请号：US11102470
申请日：2005-04-08
申请人： Yu Sun , Don Brunnett
发明人： Yu Sun , Don Brunnett
IPC分类号： G11B27/36
CPC分类号： G11B20/1217 , G11B5/59633 , G11B5/59666 , G11B27/36 , G11B2020/1282
摘要： The present invention is directed to a method and apparatus for detecting and monitoring a bi-state head when self-servowriting a disk drive. In one embodiment, an integration window is opened about an expected time that a read head will read spiral servo information. An integration value associated with the integration window is determined. Next, a determination is made as to whether the integration value is less than a predetermined low amplitude limit. If it is, a comparison is made between a location of a maximum sync frame of a read signal envelope in the integration window and the center of the integration window. The read head is identified as a bi-state head if the location of the maximum sync frame is greater than a predetermined off-center limit relative to the location of the center of the integration window.
摘要翻译：本发明涉及一种用于在自伺服磁盘驱动器时检测和监视双态磁头的方法和装置。在一个实施例中，关于读取头将读取螺旋伺服信息的期望时间打开积分窗口。确定与集成窗口相关联的积分值。接下来，确定积分值是否小于预定的低振幅限制。如果是，则在积分窗口中的读信号包络的最大同步帧的位置与积分窗的中心进行比较。如果最大同步帧的位置相对于积分窗口的中心的位置大于预定的偏心极限，则读头被识别为双态头。

8. 发明授权

US06765747B1 Method and apparatus for reducing low frequency repeatable runout in hard disk drive 有权
标题翻译：用于降低硬盘驱动器中低频可重复跳动的方法和装置
公开(公告)号：US06765747B1
公开(公告)日：2004-07-20
申请号：US10010557
申请日：2001-11-07
申请人： Yu Sun , Don Brunnett
发明人： Yu Sun , Don Brunnett
IPC分类号： G11B5596
CPC分类号： G11B5/59627
摘要： A method and apparatus are disclosed which allow for compensation of repeatable runout in a disk drive when an actuator arm assembly has a relatively high friction to inertia ratio in a pivot bearing assembly. The compensation uses one of two initial runout coefficients, based on a seek length. If the seek length is shorter than a predetermined distance, a current runout coefficient is used to compensate for repeatable runout which is continuously updated throughout a previous seek operation. If the seek length is greater than the predetermined distance, a transient runout coefficient is used to compensate for repeatable runout which is updated following the initial revolutions of the hard disk.
摘要翻译：公开了一种方法和装置，当致动器臂组件在枢转轴承组件中具有相对较高的摩擦惯性比时，允许在盘驱动器中补偿可重复的跳动。基于寻道长度，补偿使用两个初始跳动系数之一。如果寻找长度小于预定距离，则使用电流跳动系数来补偿在先前的寻找操作中不断更新的可重复跳动。如果搜索长度大于预定距离，则使用瞬时跳动系数来补偿在硬盘的初始转动之后更新的可重复跳动。

9. 发明授权

US07545593B1 Magnetic storage systems and methods with tighter write fault window to improve reliability 失效
标题翻译：磁存储系统和方法具有更严格的写入故障窗口，以提高可靠性
公开(公告)号：US07545593B1
公开(公告)日：2009-06-09
申请号：US11075285
申请日：2005-03-08
申请人： Yu Sun , Bill Flynn , Don Brunnett
发明人： Yu Sun , Bill Flynn , Don Brunnett
IPC分类号： G11B27/36 , G11B15/04 , G11B19/04 , G11B5/596
CPC分类号： G11B19/045 , G11B5/596 , G11B5/59627
摘要： A magnetic storage system includes a disk, a head, an actuator, and a servo controller. The servo controller monitors a value, such as a position error signal (PES) sample value, a predicted PES sample value, and the like, that is based on servo information provided by the head. The servo controller provides a signal to inhibit writing by the head based on a comparison of the monitored value with a threshold, such as a write fault window (WFW), a PES plus Velocity (PPV) threshold, and the like. The servo controller sets the threshold to a first value based on at least one of an on-track track misregistration (TMR) value and a seek settle TMR value. When the servo controller determines that the head is subject to a vibration condition, the servo controller sets the threshold to a second value that is different from the first value.
摘要翻译：磁存储系统包括盘，头，致动器和伺服控制器。伺服控制器基于由头提供的伺服信息来监视诸如位置误差信号（PES）采样值，预测的PES采样值等的值。伺服控制器基于监视值与诸如写入故障窗口（WFW），PES加速度（PPV）阈值等的阈值的比较来提供用于禁止头部写入的信号。伺服控制器基于轨道磁道重合失调（TMR）值和寻道稳定TMR值中的至少一个将阈值设置为第一值。当伺服控制器确定头受到振动条件时，伺服控制器将阈值设置为不同于第一值的第二值。

10. 发明授权

US07489469B2 Embedded runout correction based on written-in runout measurement 有权
标题翻译：基于写入跳动测量的嵌入式跳动校正
公开(公告)号：US07489469B2
公开(公告)日：2009-02-10
申请号：US11724436
申请日：2007-03-15
申请人： Yu Sun , Don Brunnett , Lloyd Levy , Thomas O. Melrose
发明人： Yu Sun , Don Brunnett , Lloyd Levy , Thomas O. Melrose
IPC分类号： G11B5/596
CPC分类号： G11B5/59627 , G11B5/59633
摘要： Performing embedded runout correction for a track on a rotational data storage disk includes measuring written-in runout for the track, selecting a number of revolutions in response to the measured written-in runout of the track, calculating embedded correction values for the track for the selected number of revolutions of the rotational data storage disk, and storing the embedded correction values.
摘要翻译：对旋转数据存储盘上的轨道执行嵌入式跳动校正包括测量轨道的写入跳动，响应于轨迹的测量写入跳动选择转数，计算轨道的嵌入校正值选择旋转数据存储盘的转数，并存储嵌入的校正值。

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