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    SYSTEMS AND METHODS FOR FLY-HEIGHT CONTROL USING SERVO DATA
    1.
    发明公开
    SYSTEMS AND METHODS FOR FLY-HEIGHT CONTROL USING SERVO DATA 审中-公开
    系统和飞行系统级的方法，使用功率数据

    公开(公告)号：EP2227808A4

    公开(公告)日：2013-12-18

    申请号：EP08861253

    申请日：2008-10-27

    申请人： LSI CORP

    发明人： MATHEW GEORGE ,  LEE YUAN XING ,  SONG HONGWEI ,  GRUNDVIG JEFFREY P ,  ANNAMPEDU VISWANATH

    IPC分类号： G11B21/02 ,  G11B5/596 ,  G11B5/60 ,  G11B21/10 ,  G11B21/21

    CPC分类号： G11B5/6029 ,  G11B5/59688

    摘要： Various embodiments of the present invention provide systems and methods for determining changes in fly-height. For example, various embodiments of the present invention provide storage devices that include a storage medium having servo data thereon. A read/write head assembly is disposed in relation to the storage medium. A servo based fly-height adjustment circuit receives the servo data via the read/write head assembly, and calculates a first harmonics ratio based on the received data and compares the first harmonics ratio with a second harmonics ratio to determine an error in the distance between the read/write head assembly and the storage medium.

    SYSTEMS AND METHODS FOR FLY-HEIGHT CONTROL USING SERVO ADDRESS MARK DATA
    5.
    发明公开
    SYSTEMS AND METHODS FOR FLY-HEIGHT CONTROL USING SERVO ADDRESS MARK DATA 审中-公开
    系统和控制器海拔高度的方法，使用伺服地址标记数据

    公开(公告)号：EP2179417A4

    公开(公告)日：2013-12-18

    申请号：EP08863082

    申请日：2008-10-27

    申请人： LSI CORP

    发明人： MATHEW GEORGE ,  LEE YUAN XING ,  SONG HONGWEI ,  GRUNDVIG JEFFREY P ,  ANNAMPEDU VISWANATH

    IPC分类号： G11B21/02 ,  G11B5/596 ,  G11B5/60 ,  G11B21/10 ,  G11B21/21

    CPC分类号： G11B5/59688 ,  G11B5/6029

    摘要： Various embodiments of the present invention provide systems and methods for determining fly-height adjustments. For example, various embodiments of the present invention provide storage devices that include a storage medium, a read/write head assembly disposed in relation to the storage medium (278), and a SAM based fly-height adjustment circuit (214). The storage medium (278) includes a plurality of servo data regions (110) that each include a servo address mark (154). The SAM based fly-height adjustment circuit (214) receives the servo address mark (154) from the plurality of servo data regions (110) via the read/write head assembly (276), and calculates a first harmonics ratio (445) based on the received data. The first harmonics ratio (445) is compared with a second harmonics ratio (450) to determine an error (365) in the distance (295) between the read/write head assembly (276) and the storage medium (278).