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1.发明授权公开(公告)号：US08861116B2
公开(公告)日：2014-10-14
申请号：US13196022
申请日：2011-08-02
申请人： Mao Nishiyama , Masafumi Mochizuki , Kyo Akagi , Shuji Nishida , Kazunari Usui
发明人： Mao Nishiyama , Masafumi Mochizuki , Kyo Akagi , Shuji Nishida , Kazunari Usui
CPC分类号： G11B5/743 , G11B5/59627 , G11B5/59661
摘要： In one embodiment, a method includes spiral writing a DC pattern onto a magnetic disk medium using a writer of a magnetic head while moving the magnetic head in a direction about parallel to a radial direction of the magnetic disk medium while rotating the magnetic disk medium, reading the magnetic disk medium while moving the magnetic head in the direction about parallel to the radial direction of the magnetic disk medium while rotating the magnetic disk medium, and calculating a track pitch interval between data tracks of the magnetic disk medium based on the reading of the magnetic disk medium. In another embodiment, a magnetic disk medium includes a DC spiral pattern in a radial region further outward and/or a radial region further inward than a radial region where data is recorded.
摘要翻译： 在一个实施例中，一种方法包括使用磁头的写入器将DC图案螺旋写入到磁盘介质上，同时在旋转磁盘介质的同时在大致平行于磁盘介质的径向的方向上移动磁头， 在旋转磁盘介质的同时沿着与磁盘介质的径向大致平行的方向移动磁头的同时读取磁盘介质，并且基于读取磁盘介质计算磁盘介质的数据磁道之间的磁道间距间隔 磁盘介质。 在另一个实施例中，磁盘介质包括在径向区域中进一步向内和/或径向区域的直流螺旋图案，该径向区域比记录数据的径向区域更内侧。
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2.发明申请公开(公告)号：US20130033778A1
公开(公告)日：2013-02-07
申请号：US13196022
申请日：2011-08-02
申请人： Mao Nishiyama , Masafumi Mochizuki , Kyo Akagi , Shuji Nishida , Kazunari Usui
发明人： Mao Nishiyama , Masafumi Mochizuki , Kyo Akagi , Shuji Nishida , Kazunari Usui
CPC分类号： G11B5/743 , G11B5/59627 , G11B5/59661
摘要： In one embodiment, a method includes spiral writing a DC pattern onto a magnetic disk medium using a writer of a magnetic head while moving the magnetic head in a direction about parallel to a radial direction of the magnetic disk medium while rotating the magnetic disk medium, reading the magnetic disk medium while moving the magnetic head in the direction about parallel to the radial direction of the magnetic disk medium while rotating the magnetic disk medium, and calculating a track pitch interval between data tracks of the magnetic disk medium based on the reading of the magnetic disk medium. In another embodiment, a magnetic disk medium includes a DC spiral pattern in a radial region further outward and/or a radial region further inward than a radial region where data is recorded.
摘要翻译： 在一个实施例中，一种方法包括使用磁头的写入器将DC图案螺旋写入到磁盘介质上，同时在旋转磁盘介质的同时在大致平行于磁盘介质的径向的方向上移动磁头， 在旋转磁盘介质的同时沿着与磁盘介质的径向大致平行的方向移动磁头的同时读取磁盘介质，并且基于读取磁盘介质计算磁盘介质的数据磁道之间的磁道间距间隔 磁盘介质。 在另一个实施例中，磁盘介质包括在径向区域中进一步向内和/或径向区域的直流螺旋图案，该径向区域比记录数据的径向区域更内侧。
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