Disk drive device and clearance control method thereof
    1.
    发明申请
    Disk drive device and clearance control method thereof 审中-公开
    磁盘驱动装置及其间隙控制方法

    公开(公告)号:US20090141391A1

    公开(公告)日:2009-06-04

    申请号:US12290533

    申请日:2008-10-30

    IPC分类号: G11B21/02

    CPC分类号: G11B5/581 G11B5/583

    摘要: Embodiments of the present invention help to precisely control the clearance between a head and disk for the pressure without using a barometric sensor. In an embodiment of the present invention, an HDD determines a clearance from variations in operational parameters, and further determines a variation in pressure by deducting the clearance variation caused by a variation in temperature from the clearance. When the HDD controls the clearance in accordance with the pressure change, the HDD checks for head-disk contact. The accuracy and reliability in pressure measurement (clearance measurement) using operational parameters are not high. Therefore, confirming the pressure measurement by the presence or absence of head-disk contact eliminates head-disk contact in the following read/write operation to attain a securer margin for the clearance.

    摘要翻译: 本发明的实施例有助于在不使用气压传感器的情况下精确地控制压头与盘之间的压力间隙。 在本发明的一个实施例中,HDD确定与操作参数变化之间的间隙,并且通过减去由间隙的温度变化引起的间隙变化来进一步确定压力变化。 当HDD根据压力变化控制间隙时,HDD检查头盘接触。 使用操作参数的压力测量(间隙测量)的精度和可靠性不高。 因此,通过头盘接触的存在或不存在来确认压力测量可以在随后的读/写操作中消除头盘接触,以获得间隙的安全裕度。

    Device and method for specifying control value for controlling clearance between head and disk, and magnetic disk drive device
    2.
    发明申请
    Device and method for specifying control value for controlling clearance between head and disk, and magnetic disk drive device 有权
    用于指定用于控制磁头和磁盘之间的间隙的控制值的装置和方法以及磁盘驱动装置

    公开(公告)号:US20090296260A1

    公开(公告)日:2009-12-03

    申请号:US12156092

    申请日:2008-05-28

    IPC分类号: G11B21/02

    CPC分类号: G11B5/6064 G11B5/607

    摘要: Embodiments of the present invention help to detect contact between a head and a magnetic disk more accurately in specifying a heater power value for adjusting a clearance between a head element portion and the disk. According to one embodiment, a hard disk controller/multiprocessing unit (HDC/MPU) measures amplitudes of read signals in a user data field DATA. A hard disk drive (HDD) fills a gap between servo data with single data sector. The HDC/MPU measures the amplitudes of read signals in each data sector at different heater power values. It determines the heater power value at which contact occurs from the measured values.

    摘要翻译: 本发明的实施例有助于在确定用于调节头元件部分和盘之间的间隙的加热器功率值时更准确地检测磁头和磁盘之间的接触。 根据一个实施例,硬盘控制器/多处理单元(HDC / MPU)测量用户数据字段DATA中的读取信号的幅度。 硬盘驱动器(HDD)填充伺服数据与单个数据扇区之间的间隙。 HDC / MPU以不同的加热器功率值测量每个数据扇区中读取信号的幅度。 它从测量值确定接触发生的加热器功率值。

    Device and method for specifying control value for controlling clearance between head and disk, and magnetic disk drive device
    3.
    发明授权
    Device and method for specifying control value for controlling clearance between head and disk, and magnetic disk drive device 有权
    用于指定用于控制磁头和磁盘之间的间隙的控制值的装置和方法以及磁盘驱动装置

    公开(公告)号:US07852594B2

    公开(公告)日:2010-12-14

    申请号:US12156092

    申请日:2008-05-28

    IPC分类号: G11B21/02

    CPC分类号: G11B5/6064 G11B5/607

    摘要: Embodiments of the present invention help to detect contact between a head and a magnetic disk more accurately in specifying a heater power value for adjusting a clearance between a head element portion and the disk. According to one embodiment, a hard disk controller/multiprocessing unit (HDC/MPU) measures amplitudes of read signals in a user data field DATA. A hard disk drive (HDD) fills a gap between servo data with single data sector. The HDC/MPU measures the amplitudes of read signals in each data sector at different heater power values. It determines the heater power value at which contact occurs from the measured values.

    摘要翻译: 本发明的实施例有助于在确定用于调节头元件部分和盘之间的间隙的加热器功率值时更准确地检测磁头和磁盘之间的接触。 根据一个实施例,硬盘控制器/多处理单元(HDC / MPU)测量用户数据字段DATA中的读取信号的幅度。 硬盘驱动器(HDD)填充伺服数据与单个数据扇区之间的间隙。 HDC / MPU以不同的加热器功率值测量每个数据扇区中读取信号的幅度。 它从测量值确定接触发生的加热器功率值。

    Magnetic disk drive with air bearing surface design for data area expansion
    4.
    发明申请
    Magnetic disk drive with air bearing surface design for data area expansion 审中-公开
    磁盘驱动器带有空气轴承表面设计,用于数据区域扩展

    公开(公告)号:US20070091506A1

    公开(公告)日:2007-04-26

    申请号:US11584380

    申请日:2006-10-19

    IPC分类号: G11B5/60

    CPC分类号: G11B5/6005

    摘要: Embodiment of the invention provides a magnetic disk drive that may suppress the decrease of a recording region by preventing a magnetic head slider from abutting a magnetic disk at the time of loading, and suppress the degradation of the flying characteristics. In one embodiment a magnetic disk drive of the present invention is provided with a magnetic head slider including a magnetic transducer, a ramp that unloads the magnetic head slider, and an actuator that moves the magnetic head slider. The magnetic head slider includes a rail surface that generates a positive pressure on an air-bearing surface, a step bearing surface, and a taper section that is formed to a slider corner section that is brought closest to the surface of a recording disk at the time of loading with a space from the rail surface and the step bearing surface.

    摘要翻译: 本发明的实施例提供一种磁盘驱动器,其可以通过防止磁头滑块在装载时抵靠磁盘来抑制记录区域的减小,并且抑制飞行特性的劣化。 在一个实施例中,本发明的磁盘驱动器设置有磁头滑块,其包括磁换能器,卸载磁头滑块的斜面和移动磁头滑块的致动器。 磁头滑动器包括在空气轴承表面上产生正压的轨道表面,台阶支承表面和形成在最靠近记录盘表面的滑块角部的锥形部分 从轨道表面和台阶承载表面加载空间的时间。

    Suspension assembly and magnetic disk drive
    5.
    发明申请
    Suspension assembly and magnetic disk drive 审中-公开
    悬挂总成和磁盘驱动器

    公开(公告)号:US20050052784A1

    公开(公告)日:2005-03-10

    申请号:US10897183

    申请日:2004-07-21

    IPC分类号: G11B21/21 G11B5/48 G11B5/60

    摘要: A compact hard disk drive that operates silently at a low power consumption needs a suspension assembly that places a low load on the magnetic head. In one embodiment, a suspension assembly comprises a head arm mounted on a carriage shaft, a load beam capable of placing load on a magnetic head and serving as a beam, and a flexure assembly. The flexure assembly includes a flexure formed by processing a thin metal sheet, an insulating layer laminated to the flexure, a wiring pattern formed on the insulating layer, and a protective layer coating the wiring pattern. The flexure has a flexible part for placing load on the magnetic head, a gimbals to which the magnetic head is attached, and a base part attached to the head arm. The elastic part of the flexure generates a very load in the range of about 0.5 to about 1 g.

    摘要翻译: 以低功耗静音运行的小型硬盘驱动器需要一个将低负载放在磁头上的悬架组件。 在一个实施例中,悬架组件包括安装在托架轴上的头臂,能够将负载放置在磁头上并用作梁的负载梁以及挠曲组件。 弯曲组件包括通过处理薄金属片形成的挠曲,层压到挠曲件上的绝缘层,形成在绝缘层上的布线图案,以及涂覆布线图案的保护层。 弯曲部具有用于将负载放置在磁头上的柔性部分,附接有磁头的万向节和附接到头臂的基部。 挠曲件的弹性部分产生约0.5至约1g范围内的非常载荷。

    Magnetic disk drive using femto slider and having predetermined linear velocity and gram load configuration
    6.
    发明授权
    Magnetic disk drive using femto slider and having predetermined linear velocity and gram load configuration 失效
    使用毫微微滑块的磁盘驱动器具有预定的线速度和克负载配置

    公开(公告)号:US07245457B2

    公开(公告)日:2007-07-17

    申请号:US10902821

    申请日:2004-07-30

    CPC分类号: G11B5/4826 G11B5/4833

    摘要: A magnetic disk drive includes a magnetic disk and a femto slider. The magnetic disk has a minimum track linear velocity of 1 to 5 m/s. In one embodiment, the magnetic disk drive includes a negative pressure type femto slider and adopts a load/unload method. A gram load “GL” of a head suspension assembly HSA is set at a value exceeding about 3 mN and smaller than about 15 mN and a pitch static attitude “PSA” (deg) and pitch stiffness “Kp” (Nm/deg) satisfy the expression ((PSA×Kp)/GL)

    摘要翻译: 磁盘驱动器包括磁盘和毫微微滑块。 磁盘具有1至5m / s的最小轨道线速度。 在一个实施例中,磁盘驱动器包括负压型毫微微滑块,并采用加载/卸载方法。 磁头悬挂组件HSA的克负载“GL”被设定为超过约3mN且小于约15mN的值,并且俯仰静态姿态“PSA”(deg)和俯仰刚度“Kp”(Nm / deg)满足 表达式((PSAxKp)/ GL)<0.25mm。 结果,可以防止毫微微滑块假定称为双稳态高度的元稳定飞越高状态。 此外,通过将俯仰静止姿态“PSA”设定为大于0度的值,可以防止滑块与称为半稳定阻力的磁盘表面发生元稳定接触的状态。

    Slider and rotating disk type storage device
    7.
    发明申请
    Slider and rotating disk type storage device 审中-公开
    滑块和旋转盘式存储设备

    公开(公告)号:US20050280943A1

    公开(公告)日:2005-12-22

    申请号:US11147799

    申请日:2005-06-07

    IPC分类号: G11B5/60

    CPC分类号: G11B5/6082

    摘要: A stable kinetic performance is to be exhibited even in the case of such a small-sized slider as Femto slider. In one embodiment, an air bearing surface (ABS) of a slider comprises a first pad constituting portion extending from a leading edge side to a trailing edge side, a second pad constituting portion and a third pad constituting portion formed on both sides of the first pad constituting portion and extending from the leading edge side to the trailing edge side, a connecting pad for connecting the first, second, and third pad constituting portions on the leading edge side, a first negative pressure portion formed by the first and second pad constituting portions and the connecting pad, a second negative pressure portion formed by the first and third pad constituting portions and the connecting pad, and an air trap portion formed on the leading edge side of the connecting pad.

    摘要翻译: 即使在如Femto滑块这样的小尺寸滑块的情况下也能够表现出稳定的动力学性能。 在一个实施例中,滑块的空气轴承表面(ABS)包括从前缘侧到后缘侧延伸的第一衬垫构成部分,第二衬垫构成部分和形成在第一衬垫两侧的第三衬垫构成部分 衬垫构成部分并且从前缘侧延伸到后缘侧,用于连接前缘侧上的第一,第二和第三衬垫构成部分的连接焊盘,由第一和第二焊盘构成的第一负压部分 部分和连接焊盘,由第一和第三焊盘构成部分和连接焊盘形成的第二负压部分和形成在连接焊盘的前缘侧上的空气捕获部分。

    Femto slider for small form factor hard disk drive
    8.
    发明申请
    Femto slider for small form factor hard disk drive 失效
    Femto滑块用于小尺寸硬盘驱动器

    公开(公告)号:US20050275971A1

    公开(公告)日:2005-12-15

    申请号:US10902821

    申请日:2004-07-30

    IPC分类号: G11B21/21 G11B5/48 G11B5/60

    CPC分类号: G11B5/4826 G11B5/4833

    摘要: A magnetic disk drive includes a magnetic disk and a femto slider. The magnetic disk has a minimum track linear velocity of 1 to 5 m/s. In one embodiment, the magnetic disk drive includes a negative pressure type femto slider and adopts a load/unload method. A gram load “GL” of a head suspension assembly HSA is set at a value exceeding about 3 mN and smaller than about 15 mN and a pitch static attitude “PSA” (deg) and pitch stiffness “Kp” (Nm/deg) satisfy the expression ((PSA×Kp)/GL)

    摘要翻译: 磁盘驱动器包括磁盘和毫微微滑块。 磁盘具有1至5m / s的最小轨道线速度。 在一个实施例中,磁盘驱动器包括负压型毫微微滑块,并采用加载/卸载方法。 磁头悬挂组件HSA的克负载“GL”被设定为超过约3mN且小于约15mN的值,并且俯仰静态姿态“PSA”(deg)和俯仰刚度“Kp”(Nm / deg)满足 表达式((PSAxKp)/ GL)<0.25mm。 结果,可以防止毫微微滑块假定称为双稳态高度的元稳定飞越高状态。 此外,通过将俯仰静止姿态“PSA”设定为大于0度的值,可以防止滑块与称为半稳定阻力的磁盘表面发生元稳定接触的状态。