公开(公告)号：US20040223250A1

公开(公告)日：2004-11-11

申请号：US10650934

申请日：2003-08-27

Applicant: Hitachi Global Storage Technologies Japan, Ltd.

Inventor： Hiroshi Harata ,  Atsuo Suga ,  Yuji Suzuki ,  Nobuhiro Kuwamura

IPC: G11B019/02 ,  G11B005/02

CPC classification number: G11B5/5526 ,  G11B5/012 ,  G11B5/09 ,  G11B5/82 ,  G11B19/04 ,  G11B2005/0002 ,  G11B2005/0005 ,  G11B2005/001 ,  G11B2005/0013

Abstract: A magnetic head is disposed opposite to a magnetic disk having a first recording area capable of facilitating writing information to the magnetic disk when the surrounding temperature is low, and a second recording area capable of surely holding information written to the magnetic disk when the surrounding temperature is high. Information is written to the first recording area when the surrounding temperature is low and is transferred later to the second recording area.

Abstract translation: 磁头与具有第一记录区域的磁盘相对设置，该第一记录区域能够在周围环境温度较低时将信息写入到磁盘;以及第二记录区域，当周围环境温度 高。 当周围环境温度低时，信息被写入第一记录区域，并被传送到第二记录区域。

公开(公告)号：US20040193798A1

公开(公告)日：2004-09-30

申请号：US10674763

申请日：2003-09-29

Applicant: Hitachi Global Storage Technologies Japan, Ltd.

Inventor： Nobuhiro Kuwamura

IPC: G06F012/16

CPC classification number: G11B19/04 ,  G11B5/09

Abstract: Where a leakage magnetic field deletes data on adjacent tracks gradually, such deletion is compensated so as to prevent data errors from occurring. A magnetic disk device includes one or more magnetic disks, one or more magnetic heads, and a write and read circuit for writing or reading data, and writes or reads the data on tracks on the magnetic disks. The number of writes of the data on a given track is acquired. If the number of writes reaches a predetermined number, the data on the tracks adjacent to a given track is read out once and, then, the data is rewritten on the adjacent tracks. Further, when the data is written on the tracks, the data is written on alternate physical tracks and every other track is skipped, and after the data is written on half of all tracks, the data is written on the skipped tracks.

Abstract translation: 在泄漏磁场逐渐删除相邻轨道上的数据的情况下，补偿这种删除以防止发生数据错误。 磁盘装置包括一个或多个磁盘，一个或多个磁头，以及用于写入或读取数据的写入和读取电路，以及在磁盘上的磁道上写入或读取数据。 获取给定轨道上数据的写入次数。 如果写入次数达到预定数量，则与一个给定的轨道相邻的轨道上的数据被读出一次，然后数据被重写在相邻的轨道上。 此外，当将数据写入磁道时，将数据写入备用物理磁道并跳过每隔一个磁道，并且在将数据写入所有磁道的一半之后，将数据写入跳过的磁道。