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11. 发明授权

US08107180B2 Hard-disk drive and control method for magnetic recording on a patterned medium of the hard-disk drive 有权
标题翻译：用于在硬盘驱动器的图案化介质上进行磁记录的硬盘驱动器和控制方法
公开(公告)号：US08107180B2
公开(公告)日：2012-01-31
申请号：US12505085
申请日：2009-07-17
申请人： Shuji Nishida , Yasutaka Nishida , Masafumi Mochizuki , Hideaki Maeda
发明人： Shuji Nishida , Yasutaka Nishida , Masafumi Mochizuki , Hideaki Maeda
IPC分类号： G11B5/09 , G11B27/36
CPC分类号： G11B5/09 , B82Y10/00 , G11B5/59616 , G11B5/743 , G11B20/10009 , G11B20/10435 , G11B20/1879 , G11B2220/2516 , G11B2220/252
摘要： A hard-disk drive. The hard-disk drive includes a magnetic-recording disk including tracks on which a plurality of patterned bit-cells that are isolated magnetically are aligned at predetermined alignment pitches. The hard-disk drive includes a magnetic-recording head which is configured to follow tracks, and to write and to read data. The hard-disk drive includes a signal-processing unit which is configured to generate a recording signal based on a write-clock signal with cycles corresponding to alignment pitches of patterned bit-cells, and to output a recording signal. The hard-disk drive includes a phase-detecting unit which is configured to detect a phase of the write-clock signal when the magnetic-recording head reaches an end point of a predetermined range. The hard disk drive includes a determination-processing unit which is configured to determine success of data writing based on a difference between an expected value and a detected value of the phase of the write-clock signal.
摘要翻译：硬盘驱动器。硬盘驱动器包括磁记录盘，磁盘包括轨道，磁道上分离出多个图案化的位单元，以预定的对准间距排列。硬盘驱动器包括磁记录头，其被配置为跟随轨道，并且写入和读取数据。硬盘驱动器包括信号处理单元，其被配置为基于具有对应于图案化位单元的对准间距的周期的写时钟信号产生记录信号，并输出记录信号。硬盘驱动器包括相位检测单元，其被配置为当磁记录头达到预定范围的终点时检测写时钟信号的相位。硬盘驱动器包括确定处理单元，其被配置为基于期望值和写入时钟信号的相位的检测值之间的差来确定数据写入的成功。

12. 发明申请

US20080180839A1 Magnetic disk drive 有权
标题翻译：磁盘驱动器
公开(公告)号：US20080180839A1
公开(公告)日：2008-07-31
申请号：US12008276
申请日：2008-01-09
申请人： Masafumi Mochizuki , Yukiya Shimizu , Shuji Nishida
发明人： Masafumi Mochizuki , Yukiya Shimizu , Shuji Nishida
IPC分类号： G11B5/127
CPC分类号： G11B5/1278 , B82Y10/00 , G11B5/743 , G11B5/855
摘要： In a patterned perpendicular magnetic recording medium, embodiments of the present invention provide a magnetic head in which magnetic field to be applied to adjacent tracks can be suppressed and a recording device equipped with the magnetic head. In one embodiment of the present invention, a sum of a width Pw of a main pole of a magnetic head and distances between right and left magnetic substances on a width-directional side of tracks and the main pole, so-called widths of side gap lengths s_g1—1 and s_g1—2 is, in a magnetic recording medium having a soft-magnetic underlayer, made to be not more than a sum of a width w_land of a convexity or land of the soft-magnetic underlayer and widths w_groove—1 and w_groove—2 of concavities or grooves adjacent to the land on both its sides.
摘要翻译：在图案化的垂直磁记录介质中，本发明的实施例提供了一种可以抑制施加到相邻轨道的磁场的磁头和配备有磁头的记录装置。在本发明的一个实施例中，磁头的主极的宽度Pw与轨道的宽度方向上的左右磁性物质与主极之间的距离之和，所谓的侧面间隙的宽度在具有软磁性底层的磁记录介质中，长度s_g 1 _{1和s_g 1 <2>被设定为不大于宽度w_land之和的长度的软磁性底层的凸面或平面以及与其两侧相邻的凹槽或凹槽的宽度w_沟槽-1和w_沟槽2。}

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