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21. 发明授权

US08896959B1 Magnetic disk apparatus and data recording method 有权
标题翻译：磁盘装置和数据记录方法
公开(公告)号：US08896959B1
公开(公告)日：2014-11-25
申请号：US14275614
申请日：2014-05-12
申请人： Kabushiki Kaisha Toshiba
发明人： Kazuto Kashiwagi , Takeyori Hara , Takayuki Kawabe , Masahiro Kanamaru , Takuji Matsuzawa
IPC分类号： G11B21/02 , G11B5/02 , G11B5/012 , G11B5/56
CPC分类号： G11B5/56 , G11B5/012 , G11B5/5582 , G11B5/59627
摘要： According to one embodiment, a magnetic disk apparatus includes a magnetic disk having a plurality of tracks, each of the plurality of tracks having a plurality of servo areas and a plurality of data areas, the plurality of servo areas and the plurality of data areas being alternately arranged respectively, a magnetic head, and a processor. When a plurality of positioning errors related to one servo area are present in the first track, the processor updates the positioning error of the one servo area with a positioning error closest to a second track that is next to the first track. The processor writes data in the second track by a shingled write recording system by using the updated positioning error.
摘要翻译：根据一个实施例，磁盘装置包括具有多个磁道的磁盘，多个磁道中的每一个具有多个伺服区域和多个数据区域，多个伺服区域和多个数据区域是分别交替布置有磁头和处理器。当在第一轨道中存在与一个伺服区域相关的多个定位误差时，处理器以最靠近第一轨道的第二轨道的定位误差更新一个伺服区域的定位误差。处理器通过使用更新的定位错误，通过封闭的写入记录系统将数据写入第二个轨道。

22. 发明授权

US08885284B2 Information write apparatus and information write method 有权
标题翻译：信息写入设备和信息写入方式
公开(公告)号：US08885284B2
公开(公告)日：2014-11-11
申请号：US13780744
申请日：2013-02-28
申请人： Kabushiki Kaisha Toshiba
发明人： Kazuto Kashiwagi , Takeyori Hara , Takayuki Kawabe
IPC分类号： G11B5/56
CPC分类号： G11B5/56 , G11B5/596 , G11B19/045
摘要： According to one embodiment, an information write apparatus writes a track on a magnetic disk by a shingled write recording method. The information write apparatus calculates a write target position of the track based on a pitch. The information write apparatus calculates a positioning error. The information write apparatus stores the calculated positioning error. The information write apparatus integrates positioning errors of tracks written before the predetermined track is written, and corrects a write target position based on the integrated positioning error. The information write apparatus controls the position of the write head based on the corrected write target position.
摘要翻译：根据一个实施例，信息写入装置通过带状闪存的写入记录方法将轨道写入磁盘。信息写入装置基于间距计算轨道的写入目标位置。信息写入装置计算定位误差。信息写入装置存储计算的定位误差。信息写入装置集成写入预定轨道之前写入的轨道的定位误差，并且基于积分定位误差校正写入目标位置。信息写入装置基于校正的写入目标位置来控制写入头的位置。

23. 发明授权

US08780472B2 Information reproducing apparatus and information reproducing method for cancelling interference between adjacent tracks 失效
标题翻译：用于消除相邻轨道之间的干扰的信息再现装置和信息再现方法
公开(公告)号：US08780472B2
公开(公告)日：2014-07-15
申请号：US13623748
申请日：2012-09-20
申请人： Kabushiki Kaisha Toshiba
发明人： Tomokazu Okubo , Akihiro Yamazaki , Kazuto Kashiwagi , Naoki Tagami
IPC分类号： G11B5/09
CPC分类号： G11B20/10296 , G11B20/10046 , G11B2220/2516
摘要： According to one embodiment, an information reproducing apparatus is configured to obtain, from a read sample value sequence obtained by sampling a read signal read from a first recording track of a magnetic recording medium, an interference-component-removed read sample value sequence, from which an interference component from a second recording track adjacent to the first recording track is removed. The apparatus includes a decoding module. The decoding module is configured to generate a first interference-component-removed read sample value sequence based on a cancellation weight column which varies according to a difference in polarity between a first bit of the first recording track and a second bit of the second recording track adjacent to the first bit.
摘要翻译：根据一个实施例，信息再现装置被配置为从通过对从磁记录介质的第一记录轨道读取的读取信号进行采样而获得的读取样本值序列获得干扰成分去除的读取样本值序列，从来自与第一记录轨道相邻的第二记录轨道的干扰分量被去除。该装置包括解码模块。解码模块被配置为基于取消权重列产生第一干扰成分去除的读取采样值序列，该取消权重列根据第一记录轨道的第一位和第二记录轨道的第二位之间的极性差异而变化相邻的第一位。

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