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1. 发明授权

US07310194B1 System for monitoring and dynamically adjusting head-to-disk spacing in a disk drive 失效
标题翻译：用于监视和动态调整磁盘驱动器中磁盘间距的系统
公开(公告)号：US07310194B1
公开(公告)日：2007-12-18
申请号：US11101089
申请日：2005-04-07
申请人： Bruce C. Schardt , Erhard Schreck , Jingbo Yu , Michael Mallary , Scott Hughes , Duc Banh , Kazuhiro Saito , Donald J Brunnett , Tim Glassburn , Chris Hawks , Thao Anh Nguyen , Andrew LeFebvre , Joerg Ferber , Richard K. Oswald , Brian Strom
发明人： Bruce C. Schardt , Erhard Schreck , Jingbo Yu , Michael Mallary , Scott Hughes , Duc Banh , Kazuhiro Saito , Donald J Brunnett , Tim Glassburn , Chris Hawks , Thao Anh Nguyen , Andrew LeFebvre , Joerg Ferber , Richard K. Oswald , Brian Strom
IPC分类号： G11B21/02
CPC分类号： G11B5/6029 , G11B5/3133 , G11B5/455 , G11B5/5534 , G11B5/607
摘要： A disk drive includes a drive housing, a storage disk, a slider and a drive circuitry. The slider magnetically interacts with the storage disk, and includes a read/write head that is positioned to have an actual head-to-disk spacing greater than zero nanometers during rotation of the storage disk. The drive circuitry can determine and/or monitor the actual head-to-disk spacing at any time during the operation of the disk drive based on an amplitude or a change in the amplitude of a signal such as a variable gain amplifier signal. In one embodiment, the slider includes a slider mover that receives current via the drive circuitry and causes a deformation of a portion of the slider to change the head-to-disk spacing based on the amplitude of the signal. In another embodiment, the read/write head moves during substantially consistent rotational velocity of the storage disk from a first actual head-to-disk spacing equal to approximately zero nanometers, to a second actual head-to-disk spacing that is greater than zero nanometers based on a desired amplitude of the signal.
摘要翻译：磁盘驱动器包括驱动器壳体，存储盘，滑块和驱动电路。该滑块与存储盘磁性地相互作用，并且包括读/写头，其被定位成在存储盘旋转期间具有大于零纳米的实际头到盘间距。驱动电路可以基于诸如可变增益放大器信号的信号的振幅或振幅的变化来确定和/或监视磁盘驱动器的操作期间的任何时间的实际磁头到磁盘间距。在一个实施例中，滑块包括滑块移动器，其通过驱动电路接收电流，并且导致滑块的一部分的变形，以基于信号的幅度来改变头对盘间隔。在另一个实施例中，读/写头在存储盘的基本一致的旋转速度从等于大约零纳米的第一实际磁头到磁盘间隔移动到大于零的第二实际磁头到磁盘间隔基于信号的期望幅度的纳米。

2. 发明授权

US07324299B1 Disk drive that positions a head at multiple head-to-disk spacings 有权
标题翻译：磁盘驱动器将磁头定位在多个磁头到磁盘间距
公开(公告)号：US07324299B1
公开(公告)日：2008-01-29
申请号：US11101114
申请日：2005-04-07
申请人： Erhard Schreck , Donald J Brunnett , Jingbo Yu , Francis P. Crimi , Scott Hughes , Duc Banh , Anthony R. Hurtado , Kazuhiro Saito , Andrew LeFebvre , Chris Hawks , Thao Anh Nguyen , Brian Strom , Bruce C. Schardt
发明人： Erhard Schreck , Donald J Brunnett , Jingbo Yu , Francis P. Crimi , Scott Hughes , Duc Banh , Anthony R. Hurtado , Kazuhiro Saito , Andrew LeFebvre , Chris Hawks , Thao Anh Nguyen , Brian Strom , Bruce C. Schardt
IPC分类号： G11B21/02 , G11B5/596 , G11B5/58
CPC分类号： G11B5/58
摘要： A disk drive having a drive housing, a storage disk that is rotatably coupled to the drive housing, and a slider assembly that includes a head and a slider mover. The head reads data from the storage disk during a read operation and writes data to the storage disk during a write operation. The slider mover maintains the head at a read HtD spacing during the read operation, at a pre-write HtD spacing during the read operation prior to the write operation, at a write HtD spacing during the write operation, and at an idle HtD spacing when the drive is not performing the read operation or the write operation. The disk drive includes a drive circuitry that directs a read power level to the slider mover to maintain the head at the read HtD spacing, a pre-write power level to maintain the head at the pre-write HtD spacing, a write power level to maintain the head at the write HtD spacing, and a idle power level to maintains the head at the idle HtD spacing.
摘要翻译：具有驱动器壳体，可旋转地联接到驱动器壳体的存储盘的磁盘驱动器和包括头部和滑块移动器的滑块组件。在读取操作期间，磁头从存储磁盘读取数据，并在写操作期间将数据写入存储磁盘。滑动移动器在读操作期间以读写操作期间的读取HtD间隔，在写操作期间的读操作期间以写入HtD间隔，在写操作期间以写HtD间隔，以及在空闲HtD间隔处将头保持在读取HtD间隔，驱动器不执行读操作或写操作。磁盘驱动器包括驱动电路，其将读取功率电平引导到滑块移动器以将磁头保持在读取HtD间隔，预写功率电平以将磁头保持在预写HtD间隔，写入功率电平将头部保持在写入HtD间距，并保持空闲功率级别，以将头部保持在空闲HtD间距。

3. 发明授权

US07362534B1 System for detecting a change in head-to-disk contact status in a disk drive 有权
标题翻译：用于检测磁盘驱动器中磁盘到磁盘接触状态变化的系统
公开(公告)号：US07362534B1
公开(公告)日：2008-04-22
申请号：US11101112
申请日：2005-04-07
申请人： Erhard Schreck , Francis P. Crimi , Jingbo Yu , Michael Mallary , Scott Hughes , Duc Bahn , Mark Heimbaugh , Kazuhiro Saito , Andrew LeFebvre , Joerg Ferber , Xiaoping Hu , Douglas J. Krajnovich , Chris Hawks , Donald J Brunnett , Bruce C Schardt
发明人： Erhard Schreck , Francis P. Crimi , Jingbo Yu , Michael Mallary , Scott Hughes , Duc Bahn , Mark Heimbaugh , Kazuhiro Saito , Andrew LeFebvre , Joerg Ferber , Xiaoping Hu , Douglas J. Krajnovich , Chris Hawks , Donald J Brunnett , Bruce C Schardt
IPC分类号： G11B21/02 , G11B5/596 , G11B5/58
CPC分类号： G11B5/5526 , G11B5/3136 , G11B5/54
摘要： A disk drive includes a rotatable storage disk, an actuator motor, a slider that magnetically interacts with the storage disk, and a drive circuitry. A portion of the slider moves between a first position wherein the slider does not contact the storage disk and a second position wherein the slider contacts the storage disk. The drive circuitry can detect when the position of the slider changes between these positions. In one embodiment, the drive circuitry monitors off-track movement of the slider to detect when the slider has moved between these positions. The drive circuitry can also current that is directed to the actuator motor that is used to compensate for off-track movement to detect when the slider moves between these positions. In yet another embodiment, the drive circuitry monitors a rotational velocity of the storage disk to detect approximately when the slider moves between these positions.
摘要翻译：磁盘驱动器包括可旋转存储盘，致动器马达，与存储盘磁性相互作用的滑块和驱动电路。滑块的一部分在滑块不接触存储盘的第一位置和滑块接触存储盘的第二位置之间移动。驱动电路可以检测滑块的位置何时在这些位置之间变化。在一个实施例中，驱动电路监视滑块的偏离轨迹运动，以检测滑块何时在这些位置之间移动。驱动电路还可以引导到致动器马达的电流，该电流用于补偿离轨运动以检测滑块何时在这些位置之间移动。在另一个实施例中，驱动电路监视存储盘的旋转速度，以便在滑块在这些位置之间移动时大致检测。

4. 发明授权

US07509728B1 Method for adjusting head-to-disk spacing in a disk drive 有权
标题翻译：调整磁盘驱动器中磁盘间距的方法
公开(公告)号：US07509728B1
公开(公告)日：2009-03-31
申请号：US11101298
申请日：2005-04-07
申请人： Erhard Schreck , Francis P. Crimi , Duc Bahn , Thao Anh Nguyen , Kazuhiro Saito , Donald J. Brunnett , Andrew LeFebvre , Scott Hughes , Brian Strom , Michael Mallary , Hyunchul Shim , Bruce C. Schardt
发明人： Erhard Schreck , Francis P. Crimi , Duc Bahn , Thao Anh Nguyen , Kazuhiro Saito , Donald J. Brunnett , Andrew LeFebvre , Scott Hughes , Brian Strom , Michael Mallary , Hyunchul Shim , Bruce C. Schardt
IPC分类号： G11B21/02
CPC分类号： G11B27/36 , G11B5/3133 , G11B5/40 , G11B5/6064 , G11B19/048 , G11B2220/2516 , Y10T29/49025 , Y10T29/49036
摘要： A method for manufacturing a first disk drive includes incorporating a first storage disk having a first storage surface, and a first slider having a first read/write head and a slider mover into the first disk drive. Further, the first read/write head is movably positioned a first head-to-disk spacing relative to the first storage surface. The method also includes determining an incremental power level necessary to be delivered to a second slider mover of a second slider having a second read/write head to adjust a second head-to-disk spacing relative to a second storage surface by a predetermined increment. In addition, the method includes adjusting a first head-to-disk spacing by directing an operational power level to the first slider mover. The operational power level is derived from the incremental power level. The step of determining an incremental power level can include directing power to the second slider mover and detecting approximately when a portion of the second slider first contacts the second storage surface. Moreover, the step of adjusting can be performed during one or more manufacturing operations of the first disk drive.
摘要翻译：一种用于制造第一盘驱动器的方法，包括：将具有第一存储表面的第一存储盘和具有第一读/写头和滑块移动器的第一滑块结合到第一盘驱动器中。此外，第一读/写头相对于第一存储表面可移动地定位成第一头对盘间隔。该方法还包括确定必须传送到具有第二读/写头的第二滑块的第二滑块移动器所需的增量功率水平，以相对于第二存储表面调整第二头 - 盘间隔预定增量。此外，该方法包括通过将操作功率电平引导到第一滑块移动器来调整第一头对盘间隔。运行功率电平是从增量功率电平得出的。确定增量功率水平的步骤可以包括将功率引导到第二滑块移动器，并且大体上检测第二滑块的一部分是否首先接触第二存储表面。此外，可以在第一盘驱动器的一个或多个制造操作期间执行调整步骤。

5. 发明授权

US07486459B1 Disk drive with performance driven head-to-disk spacing 有权
标题翻译：磁盘驱动器具有性能驱动的头到盘间距
公开(公告)号：US07486459B1
公开(公告)日：2009-02-03
申请号：US11101296
申请日：2005-04-07
申请人： Erhard Schreck , Anthony R. Hurtado , Andrew LeFebvre , Chris Hawks , Thao Anh Nguyen , Scott Hughes , Bruce C. Schardt , Donald J. Brunnett
发明人： Erhard Schreck , Anthony R. Hurtado , Andrew LeFebvre , Chris Hawks , Thao Anh Nguyen , Scott Hughes , Bruce C. Schardt , Donald J. Brunnett
IPC分类号： G11B27/36 , G06K9/60
CPC分类号： G11B27/36 , G11B5/3133 , G11B5/40 , G11B5/6064 , G11B19/048 , G11B2220/2516 , Y10T29/49025 , Y10T29/49036
摘要： A disk drive for storing data includes a drive housing, a storage disk that is rotatably coupled to the drive housing, a slider assembly positioned near the storage disk, and a drive circuitry. The slider assembly includes a head that interacts with the storage disk during a data transfer operation. The drive circuitry performs a performance test on the head at a first HtD spacing and at a second HtD spacing that is different than the first HtD spacing while the drive is operation. The slider assembly includes a slider mover that moves the head between the first HtD spacing and the second HtD spacing. The slider mover can move the head to the first HtD spacing during the data transfer operation if the result of the performance test is a first test result and the slider mover moves the head to the second HtD spacing during the data transfer operation if the result of the performance test is a second test result.
摘要翻译：用于存储数据的磁盘驱动器包括驱动器壳体，可旋转地联接到驱动器壳体的存储盘，位于存储盘附近的滑块组件和驱动电路。滑块组件包括在数据传送操作期间与存储盘相互作用的头部。驱动电路在驱动器运行时以第一HtD间隔和第二HtD间隔在头上执行与第一HtD间隔不同的性能测试。滑动器组件包括滑块移动器，其在第一HtD间隔和第二HtD间距之间移动头部。如果性能测试的结果是第一测试结果，并且滑块移动器在数据传输操作期间将磁头移动到第二HtD间距，则滑块移动器可以在数据传送操作期间将磁头移动到第一HtD间距，如果结果为性能测试是第二个测试结果。

6. 发明授权

US07411389B1 Method of detecting changes in operability status of a slider mover in a disk drive 有权
标题翻译：检测磁盘驱动器中滑块移动器的可操作性状态变化的方法
公开(公告)号：US07411389B1
公开(公告)日：2008-08-12
申请号：US11101297
申请日：2005-04-07
申请人： Anthony R. Hurtado , Erhard Schreck , Duc Banh , Tim Glassburn , Kazuhiro Saito , Scott Hughes , Brian Strom , Richard K. Oswald
发明人： Anthony R. Hurtado , Erhard Schreck , Duc Banh , Tim Glassburn , Kazuhiro Saito , Scott Hughes , Brian Strom , Richard K. Oswald
IPC分类号： G11B27/00 , G11B5/00
CPC分类号： G11B27/36 , G11B5/3133 , G11B5/40 , G11B5/6064 , G11B19/048 , G11B2220/2516 , Y10T29/49025 , Y10T29/49036
摘要： A method for monitoring the operability of a slider of a disk drive includes the steps of providing a slider that includes a read/write head that magnetically interacts with a storage disk, and a slider mover that adjusts a head-to-disk spacing, controlling an electrical stimulus to the slider mover with a drive circuitry, measuring an actual electrical response from the slider mover with the drive circuitry, and comparing the actual electrical response to an expected electrical response to determine an operability status of the slider mover. Further, changes in the actual electrical response can be monitored and used to predict future failure of the slider mover.
摘要翻译：一种用于监视磁盘驱动器的滑动器的可操作性的方法包括以下步骤：提供包括与存储盘磁性相互作用的读/写头的滑块，以及调节磁头到磁盘间距的滑动移动器，控制利用驱动电路对滑块移动器的电刺激，测量来自滑块移动器的驱动电路的实际电响应，以及将实际电响应与预期的电响应进行比较，以确定滑块移动器的可操作性状态。此外，可以监视实际电响应的变化并用于预测滑块移动器的未来故障。

7. 发明授权

US07310195B1 System and method for adjusting head-to-disk spacing in a disk drive 失效
标题翻译：用于调整磁盘驱动器中磁盘间距的系统和方法
公开(公告)号：US07310195B1
公开(公告)日：2007-12-18
申请号：US11101113
申请日：2005-04-07
申请人： Erhard Schreck , Francis P. Crimi , Andrew LeFebvre , Duc Banh , Thao Anh Nguyen , Brian Strom , Bruce C. Schardt
发明人： Erhard Schreck , Francis P. Crimi , Andrew LeFebvre , Duc Banh , Thao Anh Nguyen , Brian Strom , Bruce C. Schardt
IPC分类号： G11B21/02 , G11B5/596 , G11B5/58
CPC分类号： G11B5/6005
摘要： A disk drive includes a drive housing, a storage disk, a slider and a drive circuitry. The storage disk has an inner and an outer diameter. The slider includes a read/write head and a slider mover that receives power from the drive circuitry to position the read/write head at a predetermined head-to-disk spacing during radial movement of the slider relative to the storage disk. The drive circuitry can direct a varying level of power to the slider mover during radial movement of the slider. In addition, the drive circuitry can increase the power to the slider mover as the read/write head nears a target track in order to decrease the head-to-disk spacing at the appropriate time. The drive circuitry can adjust the power to the slider mover so that the head-to-disk spacing remains within a predetermined range as the slider moves radially relative to the storage disk. The drive circuitry can also direct power to the slider mover so that the head-to-disk spacing is substantially the same at the start of a seek operation and when the read/write head arrives at a target track. The drive circuitry can also direct power to the slider mover based at least partially on the temperature of a portion of the slider.
摘要翻译：磁盘驱动器包括驱动器壳体，存储盘，滑块和驱动电路。存储盘具有内径和外径。滑动器包括读/写头和滑块移动器，其在驱动器相对于存储盘的径向移动期间从驱动电路接收功率以将读/写头定位在预定的头到盘间隔。驱动电路可以在滑块的径向运动期间将变化的功率级别引导到滑块移动器。此外，当读/写头靠近目标轨道时，驱动电路可以增加滑块移动器的功率，以便在适当的时间减小头对盘间距。驱动电路可以调节滑块移动器的功率，使得当滑块相对于存储盘径向移动时，磁头到磁盘间隔保持在预定范围内。驱动电路还可以将电力引导到滑块移动器，使得在寻道操作开始时和当读/写头到达目标轨道时，磁头到磁盘的间距基本相同。驱动电路还可以至少部分地基于滑块的一部分的温度将功率引导到滑块移动器。

8. 发明授权

US07375915B1 Disk drive that varies the power to a slider mover during transitions between drive operations 有权
标题翻译：磁盘驱动器可在驱动器操作过渡期间改变滑块移动器的电源
公开(公告)号：US07375915B1
公开(公告)日：2008-05-20
申请号：US11101088
申请日：2005-04-07
申请人： Erhard Schreck , Joerg Ferber , Michael Mallary , Anthony R. Hurtado , Chris Hawks , Scott Hughes
发明人： Erhard Schreck , Joerg Ferber , Michael Mallary , Anthony R. Hurtado , Chris Hawks , Scott Hughes
IPC分类号： G11B5/596
CPC分类号： G11B5/6064 , G11B5/3133 , G11B5/607
摘要： A disk drive for storing data includes a drive housing, a storage disk that is rotatably coupled to the drive housing, a slider assembly positioned near the storage disk, and a drive circuitry. The slider assembly includes a head that interacts with the storage disk during a data transfer operation and a slider mover. The drive circuitry directs a first power level to slider mover to maintain the head at a first HtD spacing, and a second power level to the slider mover to maintain the head at a second HtD spacing, and a variable, transition power to the slider mover during a transition between the first power level being directed to the slider mover and the second power level being directed to the slider mover. The transition power is tailored to rapidly move the head between the HtD spacings.
摘要翻译：用于存储数据的磁盘驱动器包括驱动器壳体，可旋转地联接到驱动器壳体的存储盘，位于存储盘附近的滑块组件和驱动电路。滑动器组件包括在数据传送操作期间与存储盘相互作用的头部和滑块移动器。驱动电路将第一功率电平引导到滑块移动器以将头部保持在第一HtD间隔，并且将滑块移动器的第二功率电平维持在第二HtD间隔的头部，以及向滑块移动器的可变过渡功率在所述第一功率水平被引导到所述滑块移动器和所述第二功率水平之间的转换期间被引导到所述滑块移动器。过渡功率被定制为在HtD间距之间快速移动头部。

9. 发明授权

US06980383B2 Monitoring of phenomena indicative of PTP in a magnetic disk drive 失效
标题翻译：监视磁盘驱动器中指示PTP的现象
公开(公告)号：US06980383B2
公开(公告)日：2005-12-27
申请号：US10369179
申请日：2003-02-19
申请人： Don Brunnett , Duc Banh , Jingbo Yu , Mark Heimbaugh , Suet Teo , Erhard Schreck
发明人： Don Brunnett , Duc Banh , Jingbo Yu , Mark Heimbaugh , Suet Teo , Erhard Schreck
IPC分类号： G11B5/00 , G11B5/012 , G11B5/02 , G11B5/40 , G11B5/455 , G11B27/36
CPC分类号： G11B5/3136 , G11B5/012 , G11B5/02 , G11B5/40 , G11B5/455 , G11B27/36 , G11B2005/001 , G11B2220/20
摘要： A PTP test subsystem of a magnetic disk drive identifies an undesired pole tip protrusion (PTP) condition, and takes steps to prevent problems associated with PTP. A PTP stressing mechanism stresses the disk drive during a PTP test mode to induce a PTP condition. A disk contact detection circuit detects when a head of the disk drive contacts the disk. A PTP write current determining circuit is also provided which comprises a write current level detector to ascertain a write current level at which the disk contact detection circuit detects when the head of the disk drive contacts the disk while the disk drive is stressed during the PTP test mode.
摘要翻译：磁盘驱动器的PTP测试子系统识别不期望的极尖突起（PTP）条件，并采取措施来防止与PTP相关的问题。 PTP应激机制在PTP测试模式下强制磁盘驱动器以诱导PTP状态。磁盘接触检测电路检测磁盘驱动器的磁头何时接触磁盘。还提供了一种PTP写入电流确定电路，其包括一个写入电平电平检测器，用于确定当PTP测试期间磁盘驱动器受到应力时磁盘驱动器的磁头接触磁盘时磁盘接触检测电路检测到的写入电平水平模式。

10. 发明授权

US07170700B1 Method of determining side track erasure in a disk drive 有权
标题翻译：确定磁盘驱动器中的侧轨道擦除的方法
公开(公告)号：US07170700B1
公开(公告)日：2007-01-30
申请号：US10125657
申请日：2002-04-18
申请人： Gang H. Lin , Erhard Schreck , Kezhao Zhang , Don Brunnett , Duc Banh , Kurt Rusnak , Jingbo Yu , Suet Teo , Nick Warner , John Vicars
发明人： Gang H. Lin , Erhard Schreck , Kezhao Zhang , Don Brunnett , Duc Banh , Kurt Rusnak , Jingbo Yu , Suet Teo , Nick Warner , John Vicars
IPC分类号： G11B27/36 , G11B5/03
CPC分类号： G11B5/024 , G11B20/182 , G11B27/36 , G11B2220/2516
摘要： A method of determining side track erasure in a disk drive having a disk and a transducer. A target track and one or more side tracks proximate to the target track on the disk are selected, and recording parameters for recording signals on the target track and each side track with the transducer are selected. Thereafter, signals are recorded on each side track and then signals are recorded on the target track multiple times. A reduction in the integrity of the recorded signals on each side track due to recording signals on the target track multiple times is detected, and the detected reduction in the integrity of the recorded signals on each side track represents the amount of the erasure of the recorded signals on the side track. Recording parameters are changed based on the signal integrity reduction to minimize side track erasure.
摘要翻译：一种在具有盘和换能器的盘驱动器中确定侧轨道擦除的方法。选择目标轨道和靠近盘上的目标轨道的一个或多个侧轨道，并且选择用于使用换能器在目标轨道和每个侧轨上记录信号的记录参数。此后，信号被记录在每个侧轨道上，然后将信号多次记录在目标轨道上。检测到由于在目标轨道上多次记录信号而导致的每个侧轨道上的记录信号的完整性的降低，并且检测到的每个侧轨道上记录信号的完整性的降低表示记录的擦除量侧轨上的信号。记录参数根据信号完整性降低而改变，以尽量减少侧轨跟踪擦除。

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