公开(公告)号：US06501606B2

公开(公告)日：2002-12-31

申请号：US09726906

申请日：2000-11-30

申请人： Zine Eddine Boutaghou ,  Anthony P. Sannino ,  Derek A. Lewis

发明人： Zine Eddine Boutaghou ,  Anthony P. Sannino ,  Derek A. Lewis

IPC分类号： G11B502

CPC分类号： G11B5/6058 ,  G11B5/743

摘要： According to one embodiment of the present invention, a fly height of a read/write head in a disc drive is actively controlled as the read/write head is positioned over a rotating disc with a patterned media. The patterned media includes ridges and grooves in servo wedges in the patterned media. According to another embodiment of the present invention, an estimated fly height of the read/write head is compared with a desired fly height to generate a control signal. The control signal is used to apply a voltage difference across a piezoelectric layer joining the read/write head to a slider to move the read/write head relative to the slider and adjust the fly height of the read/write head. According to another embodiment of the present invention, a map of ridges and grooves in the patterned media is generated and the fly height of the read/write head is actively controlled based on information in the map.

摘要翻译： 根据本发明的一个实施例，当读/写头位于具有图案化介质的旋转盘上时，主动地控制盘驱动器中读/写头的飞行高度。 图案化介质包括在图案化介质中的伺服楔中的脊和凹槽。 根据本发明的另一实施例，将读/写头的估计飞行高度与期望的飞行高度进行比较以产生控制信号。 控制信号用于将连接读/写头的压电层上的电压差施加到滑动件，以使读/写头相对于滑块移动并调节读/写头的飞行高度。 根据本发明的另一实施例，生成图案化介质中的脊和凹槽的图，并且基于地图中的信息主动地控制读/写头的飞行高度。

公开(公告)号：US06570730B1

公开(公告)日：2003-05-27

申请号：US09472262

申请日：1999-12-27

申请人： Derek A. Lewis ,  Wayne A. Bonin ,  Anthony P. Sannino ,  Zine-Eddine Boutaghou ,  Lee C. Knippenberg

发明人： Derek A. Lewis ,  Wayne A. Bonin ,  Anthony P. Sannino ,  Zine-Eddine Boutaghou ,  Lee C. Knippenberg

IPC分类号： G11B2102

CPC分类号： G11B5/6005 ,  G11B5/483 ,  G11B5/58 ,  G11B21/21 ,  Y10T29/49027

摘要： To allow for adjusting the fly height of a read/write head carried by a slider, a shear transducer is added to the slider. The shear transducer comprises a layer of piezoelectric material added to the slider so that the portion of the slider carrying the read/write head can be moved when the shear transducer is sheared. To cause the shear transducer to shear, a voltage is applied across the piezoelectric layer. To control the movement of the transducer, a closed-loop control system is used. The control system senses the spacing between the read/write head and the disc surface, compares the sensed spacing to a desired spacing, and adjusts the voltage applied to the shear transducer to reduce the difference between the actual and desired spacing.

摘要翻译： 为了调整由滑块承载的读/写头的飞行高度，剪切传感器被添加到滑块。 剪切换能器包括添加到滑块的压电材料层，使得当剪切换能器被剪切时，承载读/写头的滑块的部分可以移动。 为了使剪切传感器剪切，在压电层上施加电压。 为了控制传感器的移动，使用闭环控制系统。 控制系统感测读/写头与盘表面之间的间距，将感测到的间距与期望的间距进行比较，并调整施加到剪切传感器的电压，以减小实际和期望间距之间的差异。

公开(公告)号：US06697223B2

公开(公告)日：2004-02-24

申请号：US10016245

申请日：2001-12-10

申请人： Derek A. Lewis ,  Anthony P. Sannino

发明人： Derek A. Lewis ,  Anthony P. Sannino

IPC分类号： G11B560

CPC分类号： G11B5/40 ,  G11B5/012 ,  G11B5/60 ,  G11B19/04

摘要： A disc head slider has a disc facing surface with a leading slider edge and a trailing slider edge. A primary bearing feature is formed on the disc facing surface forward of the trailing slider edge and has a bearing surface. A plurality of pads is formed on the disc facing surface between the primary bearing feature and the trailing slider edge. Each of the pads has an upper surface that is discrete from the upper surfaces of the other pads. An airflow barrier wall is positioned adjacent the plurality of pads to at least partially shield the plurality of pads from airflow from the primary bearing feature.

摘要翻译： 盘头滑块具有面向盘的表面，其具有前导滑块边缘和后滑块边缘。 主轴承特征形成在后滑块边缘前方的面向盘的表面上并且具有支承表面。 多个垫片形成在主轴承特征和后滑动器边缘之间的盘对面的表面上。 每个焊盘具有与其它焊盘的上表面离散的上表面。 气流阻挡壁邻近所述多个垫定位，以至少部分地屏蔽所述多个垫与来自所述主轴承特征的气流。

公开(公告)号：US06624984B2

公开(公告)日：2003-09-23

申请号：US09808462

申请日：2001-03-14

申请人： Derek A. Lewis ,  Deborah S. Schnur ,  Markus E. Mangold ,  Zine-Eddine Boutaghou

发明人： Derek A. Lewis ,  Deborah S. Schnur ,  Markus E. Mangold ,  Zine-Eddine Boutaghou

IPC分类号： G11B2124

CPC分类号： G11B5/6005 ,  G11B21/21

摘要： A slider having a slider body is provided for actively controlling a fly height of the slider relative to a data storage disc. A first plurality of beams are affixed to a back surface of the slider body. The beams are disassociated from one another and are constructed of deformable material. Each beam, in response to an applied electrical control signal is deformable in a first dimension parallel to the back surface of the slider body. Deformation of the first plurality of beams in response to an applied electrical control signal affects slider fly height by changing one of slider body crown and cross curvatures to a greater extent than along the other. In accordance with other embodiments, multiple layers of deformable beams are attached to a slider. In yet other embodiments, piezoelectric material layers having anisotropic properties are substituted for beam layers.

摘要翻译： 提供具有滑块体的滑块，用于主动地控制滑块相对于数据存储盘的飞行高度。 第一多个梁固定到滑块体的后表面。 梁彼此分离并由可变形材料构成。 响应于所施加的电控制信号的每个光束在平行于滑块体的后表面的第一尺寸中是可变形的。 响应于所施加的电控制信号的第一多个光束的变形通过将滑块体冠和交叉曲率之一改变到比另一个更大的程度来影响滑块飞行高度。 根据其他实施例，多个可变形梁层附接到滑块。 在其它实施例中，具有各向异性特性的压电材料层代替光束层。

公开(公告)号：US06671132B1

公开(公告)日：2003-12-30

申请号：US09742569

申请日：2000-12-20

申请人： Peter Crane ,  Derek A. Lewis ,  Zine-Eddine Boutaghou ,  Lee Walter

发明人： Peter Crane ,  Derek A. Lewis ,  Zine-Eddine Boutaghou ,  Lee Walter

IPC分类号： G11B5596

CPC分类号： G11B5/5552

摘要： An improved microactuator magnetic circuit having a simplified assembly, reduced field leakage, and improved passivation methods is disclosed. To simplify assembly, a single magnet is polarized in two magnetic regions so that the single magnet is functionally similar to two separate magnets. In addition, the magnetic circuit can be produced without a top keeper. Field leakage is reduced by expanding the bottom keeper. Finally, corrosion-resistant alloys with acceptable magnetic properties are used in forming the keeper.

摘要翻译： 公开了一种具有简化的组装，减少的场泄漏和改进的钝化方法的改进的微致动器磁路。 为了简化组装，单个磁体在两个磁性区域中极化，使得单个磁体在功能上类似于两个分离的磁体。 此外，可以在没有顶部保持器的情况下制造磁路。 通过扩大底部保持器来减少场泄漏。 最后，使用具有可接受磁性的耐腐蚀合金来形成保持器。