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    Method and apparatus to detect and manage servo sectors with defects on servo pattern area in hard disk drives
    2.
    发明公开
    Method and apparatus to detect and manage servo sectors with defects on servo pattern area in hard disk drives 有权
    用于检测和盘的伺服图案区域与缺陷处理伺服扇区的方法和设备

    公开(公告)号：EP1189222A3

    公开(公告)日：2003-06-11

    申请号：EP01122138.9

    申请日：2001-09-14

    申请人： SAMSUNG ELECTRONICS CO., LTD.

    发明人： Chu, Sang-Hoon ,  Shim, Jun-Seok ,  Yu, Seong-Hwan ,  Choi, Soo-Il

    IPC分类号： G11B20/18 ,  G11B5/596 ,  G11B27/36

    CPC分类号： G11B20/1883 ,  G11B5/59655 ,  G11B20/18 ,  G11B27/3027 ,  G11B27/36 ,  G11B2020/183 ,  G11B2220/20

    摘要： An apparatus, method and computer program product for a hard disk drive (10) defect detection system. In one embodiment, a method of detecting defects on the surface of a disk (12) having a plurality of tracks (t n ) is recited. The method comprises reading, one or more times, the servo bits for a plurality of sectors (i) and determining a burst measure for at least one sector, where the burst measure is a function of the burst signals for the sector. This method further comprises determining a reference value, where the reference value is a function of the burst signals of the plurality of sectors, and comparing the burst measure of at least one sector to the reference value to identify a potential defect. In one embodiment, a sector is mapped as defective where its burst measure differs from the reference value by at least 5 percent.

    摘要翻译： 用于硬盘驱动器的装置，方法和计算机程序产品（10）的缺陷检测系统。在一个实施方案中，具有轨道（TN）的多个盘（12）的表面上检测缺陷的方法列举。 该方法包括读取，一次或多次，所述伺服位为扇区（i）多个与确定性采矿突发度量的至少一个扇区，其中所述突发的措施是为界的脉冲串信号的功能。 该方法还包括确定开采的基准值，其中，所述参考值是扇区的多个突发信号的一个功能，并且至少一个扇区的突发测量与基准值来识别一个潜在的缺陷。 在一个其中其突发测量从基准值由至少实施方式5的不同百分比的扇区被映射为有缺陷的。

    Servo defect management scheme in hard disk drives
    3.
    发明公开
    Servo defect management scheme in hard disk drives 有权
    系统的磁盘驱动器的伺服错误管理

    公开(公告)号：EP1211683A3

    公开(公告)日：2008-04-09

    申请号：EP01122127.2

    申请日：2001-09-14

    申请人： SAMSUNG ELECTRONICS CO., LTD.

    发明人： Chu, Sang-hoon ,  Shim, Jun-seok ,  Yu, Seong-hwan ,  Choi, Soo-Il ,  Lee, Kang-seok

    IPC分类号： G11B21/10

    CPC分类号： G11B5/59633 ,  G11B5/59688 ,  G11B27/3027

    摘要： The present disclosure relates to a system for detecting a plurality of defect types on the surface of a disk in a hard disk drive. In particular, the disclosure relates to utilizing information obtained from a plurality of servo bits to determine if a sector contains a physical defect. Where such a defect is found, the sector's write gate is disabled and its burst signal data is ignored for track following purposes. In addition, large changes in PES are used to identify closure spike defects. Such defects are managed by providing a compensation signal to the read value of the PES to improve track following. Finally, high PES values are used to signal a third defect type where no other signs of defect are present. In such case, the sector is mapped as defective, but the burst signals continue to be used for track following purposes.

    Servo defect management scheme in hard disk drives
    4.
    发明公开
    Servo defect management scheme in hard disk drives 有权
    系统管理委员会（Plattenlaufwerks）

    公开(公告)号：EP1211683A2

    公开(公告)日：2002-06-05

    申请号：EP01122127.2

    申请日：2001-09-14

    申请人： SAMSUNG ELECTRONICS CO., LTD.

    发明人： Chu, Sang-hoon ,  Shim, Jun-seok ,  Yu, Seong-hwan ,  Choi, Soo-Il ,  Lee, Kang-seok

    IPC分类号： G11B21/10

    CPC分类号： G11B5/59633 ,  G11B5/59688 ,  G11B27/3027

    摘要： The present disclosure relates to a system for detecting a plurality of defect types on the surface of a disk in a hard disk drive. In particular, the disclosure relates to utilizing information obtained from a plurality of servo bits to determine if a sector contains a physical defect. Where such a defect is found, the sector's write gate is disabled and its burst signal data is ignored for track following purposes. In addition, large changes in PES are used to identify closure spike defects. Such defects are managed by providing a compensation signal to the read value of the PES to improve track following. Finally, high PES values are used to signal a third defect type where no other signs of defect are present. In such case, the sector is mapped as defective, but the burst signals continue to be used for track following purposes.

    摘要翻译： 本公开涉及一种用于检测硬盘驱动器中的盘表面上的多种缺陷类型的系统。 具体地，本公开涉及利用从多个伺服位获得的信息来确定扇区是否包含物理缺陷。 在找到这样的缺陷的情况下，扇区的写入门被禁用，并且其突发信号数据被忽略以用于跟踪目的。 此外，PES的大变化用于识别闭合尖峰缺陷。 通过向PES的读取值提供补偿信号以改善跟踪跟踪，来管理这些缺陷。 最后，使用高PES值来表示不存在其它缺陷迹象的第三缺陷类型。 在这种情况下，扇区被映射为有缺陷的，但突发信号继续用于追踪目的。