Multi-tracks MR offset tuning based on error count in certification process
    3.
    发明授权
    Multi-tracks MR offset tuning based on error count in certification process 有权
    基于认证过程中的错误计数的多轨MR偏移调整

    公开(公告)号:US07173781B2

    公开(公告)日:2007-02-06

    申请号:US10607420

    申请日:2003-06-26

    IPC分类号: G11B27/36 G11B5/09 G11B5/596

    CPC分类号: G11B27/36 G11B5/59627

    摘要: Embodiments of the present invention include a method and an apparatus for generating an optimal MRO for a zone having a plurality of tracks. A disc drive controller determines the optimum MRO of a zone of tracks by analyzing multiple tracks in the zone with the actuator arm located at a series of offsets relative to the track center. Selected tracks in the zone are written to once. Then the selected tracks in the zone are sequentially read at a first offset, and the corresponding errors recorded. This reading is repeated for each of the offsets until all offsets have been analyzed. Based on the offset, or band of offsets, with the least errors over the selected tracks, the optimum MRO can be selected for the zone. The process can be repeated for each zone and the optimum MRO values stored in an MRO table in the disc drive for use during subsequent read and write operations.

    摘要翻译: 本发明的实施例包括用于为具有多个轨道的区域生成最佳MRO的方法和装置。 磁盘驱动器控制器通过分析区域中的多个轨道来确定轨道区域的最佳MRO,致动臂位于相对于轨道中心的一系列偏移处。 区域中的选定轨道写入一次。 然后在第一个偏移顺序读取该区域中的所选轨道,并记录相应的错误。 对于每个偏移重复该读数,直到所有的偏移被分析为止。 基于偏移量偏移或偏移带,在所选轨道上具有最小误差,可以为该区域选择最佳MRO。 可以对每个区域重复该过程并且存储在磁盘驱动器中的MRO表中的最佳MRO值用于在随后的读取和写入操作期间使用。