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公开(公告)号：US20120050918A1
公开(公告)日：2012-03-01
申请号：US12868610
申请日：2010-08-25
申请人： Rohit P. Ambekar , Karl A. Flechsig , Remmelt Pit , Oscar J. Ruiz
发明人： Rohit P. Ambekar , Karl A. Flechsig , Remmelt Pit , Oscar J. Ruiz
IPC分类号： G11B5/60
CPC分类号： G11B5/6082
摘要： A head slider for a disk drive storage device. The head slider is adapted to fly at the target height above the disk, reduce contamination by preventing particles from being trapped under the head slider, fly well in helium at low velocity and obtain a manufacturing tolerance so that multiple head sliders may be produced and function properly. The head slider has an internal cavity that is substantially enclosed by the air bearing surface. There are two gaps in the air bearing surface that are misaligned relative to the leading edge. The gaps aid in preventing particles from entering the cavity.
摘要翻译： 用于磁盘驱动器存储设备的磁头滑块。 磁头滑块适于在磁盘上方的目标高度处飞行，通过防止颗粒被捕获在磁头滑块下面来减少污染，并以低速度在氦气中良好地飞行，并获得制造公差，从而可以产生多个磁头滑块和功能 正确的 磁头滑块具有基本上被空气轴承表面封闭的内部空腔。 空气轴承表面有两个相对于前缘不对准的间隙。 间隙有助于防止颗粒进入腔体。
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公开(公告)号：US20100142092A1
公开(公告)日：2010-06-10
申请号：US12328309
申请日：2008-12-04
IPC分类号： G11B5/60
CPC分类号： G11B5/6029 , G11B5/6064
摘要： Magnetic disk drives and associated methods are described for performing an active flying height compensation process for a slider of a magnetic disk drive. For the flying height compensation process, a control system in the disk drive detects a reduction in flying height of a slider in the disk drive. The control system then calculates a compensation heating power to apply to one or more heating elements that are fabricated in the slider to compensate for the reduction in flying height. The control system then applies the compensation heating power to the heating element(s) in the slider to alter the ABS (i.e., generate a protrusion) and increase the flying height of the slider.
摘要翻译： 描述了用于对磁盘驱动器的滑块执行主动飞行高度补偿处理的磁盘驱动器和相关联的方法。 对于飞行高度补偿处理，磁盘驱动器中的控制系统检测磁盘驱动器中的滑块的飞行高度的减小。 控制系统然后计算补偿加热功率，以应用于在滑块中制造的一个或多个加热元件，以补偿飞行高度的降低。 控制系统然后将补偿加热功率施加到滑块中的加热元件以改变ABS（即，产生突起）并增加滑块的飞行高度。
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公开(公告)号：US5689057A
公开(公告)日：1997-11-18
申请号：US607753
申请日：1996-02-27
申请人： Peter Michael Baumgart , Karl A. Flechsig , Michael Franklin Lee , Wing P. Leung , Ullal Vasant Nayak , Thao Anh Nguyen , Timothy Christopher O'Sullivan , Andrew Ching Tam
发明人： Peter Michael Baumgart , Karl A. Flechsig , Michael Franklin Lee , Wing P. Leung , Ullal Vasant Nayak , Thao Anh Nguyen , Timothy Christopher O'Sullivan , Andrew Ching Tam
CPC分类号： B82Y15/00 , B23K26/0823 , B82Y10/00 , G11B33/10 , G11B5/82 , G11B5/8404 , G11B5/8408 , Y10T29/49995
摘要： Crater shaped bumps are made on a calibration disk which can be used for calibrating a PZT slider, the PZT slider in turn being used for detecting predetermined asperities on a production run magnetic disk. The crater shaped bumps emulate predetermined asperities of production run magnetic disks and especially asperities which are undesirable and would cause the production run disk to be discarded after testing by the PZT slider. Crater shaped bumps which emulate undesirable asperities on current production runs of magnetic disks have a diameter in the range of 10 to 25 .mu.m and a peripheral ridge with a height h.sub.r above a nominal surface of the calibration disk in the range of 75 to 120 nm. Close tolerance crater shaped bumps with this configuration can be made by impinging two or more pulses of laser energy on the same location of a calibration disk. By increasing the number of pulses the height of the peripheral ridge progressively increases. By employing multiple pulses, the height of the peripheral ridge is increased while the diameter of the crater shaped bump stays substantially constant. Further, by employing multiple pulses diameters and heights of crater shaped bumps can be produced with close tolerances within a diameter range of 5 to 20 .mu.m and a height range of 2 to 120 nm. Different arrangements of the crater shaped bumps on a calibration disk are provided for increasing the range of calibration of the PZT slider.
摘要翻译： 在可用于校准PZT滑块的校准盘上形成火山口形凸块，PZT滑块又用于检测生产运行磁盘上的预定凹凸。 火山口形凸起模拟生产运行磁盘的预定粗糙度，特别是不期望的粗糙度，并且会在PZT滑块测试后导致生产运行盘被丢弃。 在当前的磁盘生产运行中模拟不期望的粗糙度的火山口形凸起具有在10至25μm的范围内的直径和在校准盘的标称表面上的高度hr在75至120nm范围内的周边脊 。 可以通过在校准盘的相同位置上照射激光能量的两个或更多个脉冲来实现具有该配置的紧公差凹坑形状的凸块。 通过增加脉冲数，周边脊的高度逐渐增加。 通过采用多个脉冲，周边脊的高度增加，而凹坑形凸起的直径基本保持不变。 此外，通过使用多个脉冲，可以在5〜20μm的直径范围内和2〜120nm的高度范围内产生具有紧密公差的凹坑形凸起的高度。 提供校准盘上的凹坑形突起的不同布置，用于增加PZT滑块的校准范围。
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公开(公告)号：US07817371B2
公开(公告)日：2010-10-19
申请号：US12328309
申请日：2008-12-04
IPC分类号： G11B21/02
CPC分类号： G11B5/6029 , G11B5/6064
摘要： Magnetic disk drives and associated methods are described for performing an active flying height compensation process for a slider of a magnetic disk drive. For the flying height compensation process, a control system in the disk drive detects a reduction in flying height of a slider in the disk drive. The control system then calculates a compensation heating power to apply to one or more heating elements that are fabricated in the slider to compensate for the reduction in flying height. The control system then applies the compensation heating power to the heating element(s) in the slider to alter the ABS (i.e., generate a protrusion) and increase the flying height of the slider.
摘要翻译： 描述了用于对磁盘驱动器的滑块执行主动飞行高度补偿处理的磁盘驱动器和相关联的方法。 对于飞行高度补偿处理，磁盘驱动器中的控制系统检测磁盘驱动器中的滑块的飞行高度的减小。 控制系统然后计算补偿加热功率，以应用于在滑块中制造的一个或多个加热元件，以补偿飞行高度的降低。 控制系统然后将补偿加热功率施加到滑块中的加热元件以改变ABS（即，产生突起）并增加滑块的飞行高度。
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15.发明授权Active bypass circuit for extending energy capacity and operational life of a multi-cell battery 失效主动旁路电路，用于延长多节电池的能量容量和使用寿命公开(公告)号：US06265846B1
公开(公告)日：2001-07-24
申请号：US09677958
申请日：2000-10-03
IPC分类号： H01M1046
CPC分类号： H01M10/441 , H02H7/18
摘要： An active bypass circuit for use with a battery pack having a plurality of cells and method of operation thereof. The active bypass circuit includes a first switching device that is series-coupled with a cell in the battery pack (a separate active bypass circuit is utilized for each cell in the battery pack). A second switching device is parallel-coupled across the first switching device and the cell. The first and second switching devices are switched, i.e., turned ON and OFF, in a complementary fashion. The active bypass circuit also includes a monitoring circuit for monitoring an electrical characteristic of the cell and generating a switching control signal, in response to the monitored electrical characteristic, to selectively control the operation of the first and second switching devices. In an advantageous embodiment, the electrical characteristic is a voltage across the cell. In a related embodiment, the active bypass circuit also includes a switching driver circuit that receives the switching control signal from the monitoring circuit and generates, in response thereto, complementary first and second switching signals to the first and second switching devices, respectively.
摘要翻译： 一种用于具有多个电池的电池组的有源旁路电路及其操作方法。 主动旁路电路包括与电池组中的电池串联耦合的第一开关装置（用于电池组中的每个电池的单独的有源旁路电路）。 第二开关器件跨越第一开关器件和电池并联耦合。 第一和第二开关器件以互补的方式被切换，即接通和断开。 主动旁路电路还包括监视电路，用于响应于所监视的电气特性来监视电池的电气特性并产生开关控制信号，以选择性地控制第一和第二开关装置的操作。 在有利的实施例中，电特性是电池两端的电压。 在相关实施例中，有源旁路电路还包括开关驱动器电路，其接收来自监视电路的开关控制信号，并响应于此产生互补的第一和第二开关信号到第一和第二开关装置。
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16.发明授权公开(公告)号：US08094409B2
公开(公告)日：2012-01-10
申请号：US12128512
申请日：2008-05-28
IPC分类号： G11B33/14
CPC分类号： G11B25/043 , G11B33/148
摘要： A system and method for monitoring the helium content of a disk cavity of a hard disk drive is disclosed. In one embodiment of the present invention, an oxygen sensor is placed in the disk cavity to monitor the level of oxygen in the cavity. With the measurement of oxygen in the disk cavity, the level of helium in the cavity is inferred. In one embodiment, if the amount of helium inferred from the oxygen level fell below 90%-95% of the gaseous content of the disk cavity, a user is automatically notified in order to maintain the hard disk drive in a timely manner.
摘要翻译： 公开了一种用于监测硬盘驱动器的盘腔的氦含量的系统和方法。 在本发明的一个实施例中，将氧传感器放置在盘腔中以监测空腔中的氧的水平。 通过测量磁盘腔中的氧气，可以推断腔体中的氦气水平。 在一个实施方案中，如果从氧水平推断的氦的量降低到盘腔的气体含量的90％-95％以下，则自动通知用户以及时地维护硬盘驱动器。
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