公开(公告)号：US20080074788A1

公开(公告)日：2008-03-27

申请号：US11525293

申请日：2006-09-21

申请人： Chao Yuan Chen ,  Xiaoguang Ma ,  Michael Sullivan

发明人： Chao Yuan Chen ,  Xiaoguang Ma ,  Michael Sullivan

IPC分类号： G11B5/82

CPC分类号： G11B5/72

摘要： A disk for a hard disk drive. The disk includes a protective layer of shape memory alloy material over a magnetic layer. Contact between a head of the drive and the shape memory alloy material will cause frictional heat. The heat will cause a solid-solid phase transformation of the shape memory alloy material that will absorb energy and reduce wear. After head-disk contact terminates the shape memory alloy material will resume its initial solid phase. The shape memory alloy material may be relatively thin thereby improving the magnetic characteristics of the disks while providing a protective coating.

摘要翻译： 硬盘驱动器的磁盘。 磁盘包括磁性层上形状记忆合金材料的保护层。 驱动头和形状记忆合金材料之间的接触会引起摩擦热。 热量将导致形状记忆合金材料的固相转变，这将吸收能量并减少磨损。 头盘接触终止后，形状记忆合金材料将恢复其初始固相。 形状记忆合金材料可以相对薄，从而在提供保护涂层的同时提高盘的磁特性。

公开(公告)号：US20080084637A1

公开(公告)日：2008-04-10

申请号：US11543525

申请日：2006-10-04

申请人： Chao Yuan Chen ,  Michael Sullivan

发明人： Chao Yuan Chen ,  Michael Sullivan

IPC分类号： G11B5/60

CPC分类号： G11B5/6082 ,  G11B5/54

摘要： A head that flies relative to a disk of a hard disk drive. The head includes a substrate that has a pole tip, and an air bearing surface that has at least one rail and a central pad. The air bearing surface also has a plurality of contact dot that each makes contact with the disk at different skew angles. Providing contact at different skew angles insures that multiple dots do not make contact with the same track of the disk. This is particularly advantageous when the head is landed on the disk at the same skew angle.

摘要翻译： 相对于硬盘驱动器的磁盘飞出的磁头。 头包括具有极尖的基底和具有至少一个轨道和中心垫的空气轴承表面。 空气轴承表面还具有多个接触点，每个接触点以不同的倾斜角与盘接触。 以不同的倾斜角提供接触确保多个点不与磁盘的相同磁道接触。 当磁头以相同的歪斜角落在盘上时，这是特别有利的。

公开(公告)号：US20090013203A1

公开(公告)日：2009-01-08

申请号：US11825104

申请日：2007-07-02

申请人： Chao Yuan Chen ,  Michael Sullivan ,  Peng Luo

发明人： Chao Yuan Chen ,  Michael Sullivan ,  Peng Luo

IPC分类号： G06F1/00

CPC分类号： G06F1/3203 ,  G06F1/3268 ,  G11B5/6064 ,  G11B5/607 ,  G11B19/00 ,  Y02D10/154

摘要： A method for implementing a power saving mode in a hard disk drive. The method includes the steps of flying a head over a data track of a disk that is covered with a lubricant. The speed of the disk is reduced. A voltage is applied to a heating element of the head to move the head closer to the disk. The fly height of the head is then determined. The voltage can be incrementally varied until the head makes contact with the disk. The voltage is terminated and the head is allowed to fly over the data track. The head is also moved to adjacent tracks on either side of the data track. A pressure gradient of the flying head moves the lubricant about the disk to mitigate a modulated wear pattern caused by the reduction in disk speed. The disk speed is then increased in a normal operating mode.

摘要翻译： 一种用于在硬盘驱动器中实现省电模式的方法。 该方法包括以下步骤：将头部悬挂在被润滑剂覆盖的盘的数据轨道上。 磁盘的速度降低。 将电压施加到头部的加热元件，以使头靠近盘。 然后确定头部的飞行高度。 电压可以逐渐变化，直到磁头与磁盘接触。 电压终止，头部允许在数据轨道上飞行。 头也移动到数据轨道两侧的相邻轨道。 飞头的压力梯度使润滑剂围绕盘移动，以减轻由于盘速度的降低引起的调制磨损模式。 然后在正常操作模式下增加磁盘速度。

公开(公告)号：US20090021864A1

公开(公告)日：2009-01-22

申请号：US11890837

申请日：2007-08-08

申请人： Chao Yuan Chen

发明人： Chao Yuan Chen

IPC分类号： G11B5/60

CPC分类号： G11B21/12 ,  G11B19/046

摘要： A Load-UnLoad (LUL) hard disk drive rotating its disks with ramp speeds when loading and/or unloading its sliders from its ramp based upon at least one atmospheric condition (AC) within the hard disk drive. Embodiments include load and unload ramp speeds that differ for a single AC, load ramp speeds that differ for differing AC, and/or unload ramp speeds that differ for differing AC. Also a method of operating such hard disk drive and its implementation within an embedded circuit.

摘要翻译： 基于硬盘驱动器内的至少一个大气条件（AC），负载 - 卸载（LUL）硬盘驱动器在从其斜坡加载和/或卸载其滑块时以斜坡速度旋转其盘。 实施例包括针对不同AC的负载斜坡速度和针对不同AC不同的不同AC和/或卸载斜坡速度的单个AC不同的负载和卸载斜坡速度。 也是一种在嵌入式电路中操作这种硬盘驱动器及其实现的方法。

公开(公告)号：US07350400B1

公开(公告)日：2008-04-01

申请号：US11525263

申请日：2006-09-22

申请人： Chao Yuan Chen

发明人： Chao Yuan Chen

IPC分类号： G01N33/26 ,  G01N11/00 ,  G01B5/18 ,  G01B11/22

CPC分类号： G01N33/30

摘要： A method for measuring the mobility of a lubricant located on the top surface of a disk used in hard disk drives. The method includes forming one or more scribe lines in a lubricant layer of the disk. The disk is then spun by a spin stand where lubricant moves in response to the centrifugal forces of the spinning disk. The disk is removed from the spin stand and the height of lubricant that moved into the scribe line is measured to determine lubricant mobility.

摘要翻译： 用于测量位于硬盘驱动器中使用的盘的顶表面上的润滑剂的迁移率的方法。 该方法包括在盘的润滑剂层中形成一个或多个划线。 然后通过旋转台旋转盘，其中润滑剂响应于旋转盘的离心力而移动。 将盘从旋转架上取下，并测量移入划线的润滑剂的高度，以确定润滑剂的流动性。

公开(公告)号：US20080072662A1

公开(公告)日：2008-03-27

申请号：US11525263

申请日：2006-09-22

申请人： Chao Yuan Chen

发明人： Chao Yuan Chen

IPC分类号： G01N33/26

CPC分类号： G01N33/30

摘要： A method for measuring the mobility of a lubricant located on the top surface of a disk used in hard disk drives. The method includes forming one or more scribe lines in a lubricant layer of the disk. The disk is then spun by a spin stand where lubricant moves in response to the centrifugal forces of the spinning disk. The disk is removed from the spin stand and the height of lubricant that moved into the scribe line is measured to determine lubricant mobility.

摘要翻译： 用于测量位于硬盘驱动器中使用的盘的顶表面上的润滑剂的迁移率的方法。 该方法包括在盘的润滑剂层中形成一个或多个划线。 然后通过旋转台旋转盘，其中润滑剂响应于旋转盘的离心力而移动。 将盘从旋转架上取下，并测量移入划线的润滑剂的高度，以确定润滑剂的流动性。

公开(公告)号：US07301719B1

公开(公告)日：2007-11-27

申请号：US11525292

申请日：2006-09-21

申请人： Chao Yuan Chen ,  Shuyu Sun ,  Hoa Pham ,  Sang Lee

发明人： Chao Yuan Chen ,  Shuyu Sun ,  Hoa Pham ,  Sang Lee

IPC分类号： G11B15/18

CPC分类号： G11B5/3169 ,  G11B5/40 ,  G11B5/455 ,  G11B5/6005

摘要： A calibration method for a fly on demand head of a hard disk drive. The method includes the steps of flying a head over a test track of a disk that is covered with a lubricant. A voltage is applied to a heating element of the head to move the head closer to the disk. The fly height of the head is then determined. The voltage can be incrementally varied until the head makes contact with the disk. This sequence can cause a modulated wear pattern in the lubricant of the disk. The voltage is terminated and the head is allowed to fly over the test track. The head is also moved to adjacent tracks on either side of the test track. A pressure gradient of the flying head moves the lubricant about the disk to mitigate the modulated wear pattern.

摘要翻译： 用于硬盘驱动器的点播头的校准方法。 该方法包括以下步骤：将头部悬挂在被润滑剂覆盖的盘的测试轨道上。 将电压施加到头部的加热元件，以使头靠近盘。 然后确定头部的飞行高度。 电压可以逐渐变化，直到磁头与磁盘接触。 该顺序可能导致盘的润滑剂中的调制磨损图案。 电压终止，头部允许飞过测试轨道。 头部也移动到测试轨道两侧的相邻轨道。 飞行头的压力梯度将润滑剂移动到盘周围，以减轻调制的磨损模式。