Method and apparatus for minimizing slider fly heights over patterned media
    1.
    发明授权
    Method and apparatus for minimizing slider fly heights over patterned media 有权
    使图案化介质上滑块飞行高度最小化的方法和装置

    公开(公告)号:US06563673B2

    公开(公告)日:2003-05-13

    申请号:US09952122

    申请日:2001-09-11

    IPC分类号: G11B582

    摘要: A patterned magnetic storage medium has a plurality of data sectors separated by respective servo sectors with each servo sector having a pattern of pits representing servo data. Grooves in each data sector separate adjacent tracks. Non-uniform structures patterns the grooves to a model of minimum or zero fly height perturbations of a slider adjacent the medium. The non-uniform structures preferably include lands pseudo-randomly spaced along each groove to form segmented grooves of pseudo-random length, with the lands being pseudo-randomly positioned across the data sector. In other embodiments, the servo sectors have lengths along each track to define a null frequency that matches a pitch frequency of modulation of a slider due to the pits of the servo sectors.

    摘要翻译: 图案化磁存储介质具有由相应的伺服扇区分开的多个数据扇区,每个伺服扇区具有表示伺服数据的凹坑图案。 每个数据扇区的槽分开相邻的轨道。 不均匀结构将凹槽图案化为与介质相邻的滑块的最小或零飞高度扰动的模型。 非均匀结构优选地包括沿着每个凹槽伪随机间隔开的凸起以形成伪随机长度的分段凹槽,其中凸台被伪随机地定位在数据扇区上。 在其他实施例中,伺服扇区沿着每个轨道具有长度,以限定由于伺服扇区的凹坑而使滑块的调制频率匹配的零点频率。