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1. 发明公开

EP1744306A2 Data erasure apparatus and data erasure method 审中-公开
标题翻译： Vorrichtung und Verfahren zurDatenlöschung
公开(公告)号：EP1744306A2
公开(公告)日：2007-01-17
申请号：EP06012559.8
申请日：2006-06-19
申请人： Hitachi Global Storage Technologies B. V.
发明人： Kitamura, Mitsuru , Katoh, Masahiko
IPC分类号： G11B5/012
CPC分类号： G11B5/0245 , G11B5/012
摘要： Disclosed is a method for erasing data recorded on a magnetic disk, which is housed in a magnetic disk drive, by using an external erasure magnetic field generated by an external erasure magnetic field generator. The method comprises the steps of: moving a first magnetic disk drive within an external erasure magnetic field in a moving state appropriate for the type of the first magnetic disk drive, and erasing data recorded on a magnetic disk in the first magnetic disk drive; and moving a second magnetic disk drive, which differs in type from the first magnetic disk drive, within an external erasure magnetic field in a moving state that differs from the moving state of the first magnetic disk drive, and erasing data recorded on a magnetic disk in the second magnetic disk drive.
摘要翻译：公开了一种通过使用由外部擦除磁场发生器产生的外部擦除磁场来擦除记录在磁盘上的数据的方法，该磁盘被容纳在磁盘驱动器中。该方法包括以下步骤：在适于第一磁盘驱动器的类型的移动状态下移动外部擦除磁场内的第一磁盘驱动器，以及擦除记录在第一磁盘驱动器中的磁盘上的数据; 并且在与第一磁盘驱动器的移动状态不同的移动状态的外部擦除磁场内移动与第一磁盘驱动器不同的第二磁盘驱动器，以及擦除记录在磁盘上的数据在第二磁盘驱动器中。

2. 发明公开

EP1744306A3 Data erasure apparatus and data erasure method 审中-公开
标题翻译：装置和方法用于数据擦除
公开(公告)号：EP1744306A3
公开(公告)日：2007-01-31
申请号：EP06012559.8
申请日：2006-06-19
申请人： Hitachi Global Storage Technologies B. V.
发明人： Kitamura, Mitsuru , Katoh, Masahiko
IPC分类号： G11B5/024 , G11B5/012
CPC分类号： G11B5/0245 , G11B5/012
摘要： Disclosed is a method for erasing data recorded on a magnetic disk, which is housed in a magnetic disk drive, by using an external erasure magnetic field generated by an external erasure magnetic field generator. The method comprises the steps of: moving a first magnetic disk drive within an external erasure magnetic field in a moving state appropriate for the type of the first magnetic disk drive, and erasing data recorded on a magnetic disk in the first magnetic disk drive; and moving a second magnetic disk drive, which differs in type from the first magnetic disk drive, within an external erasure magnetic field in a moving state that differs from the moving state of the first magnetic disk drive, and erasing data recorded on a magnetic disk in the second magnetic disk drive.

3. 发明公开

EP1592007A3 Data erasure apparatus, data erasure method and method for writing servo patterns on recording disk 审中-公开
标题翻译：数据记录盘上擦除装置，数据删除方法，和方法，用于记录伺服模式
公开(公告)号：EP1592007A3
公开(公告)日：2006-11-08
申请号：EP05003926.2
申请日：2005-02-23
申请人： Hitachi Global Storage Technologies B. V.
发明人： Kitamura, Mitsuru , Katoh, Masahiko , Tamura, Hitoshi , Uchiyama, Hiroaki , Murayama, Masashi , Ikeda, Migifumi , Sasaki, Kazuo , Watanabe, Shigeki
IPC分类号： G11B19/20 , G11B5/024 , G11B5/325 , G11B5/596
CPC分类号： G11B19/20 , G11B5/0245 , G11B5/325 , G11B5/59633
摘要： To prevent a spindle motor from stopping rotation while data on a magnetic disk is being erased by using a permanent magnet 151. Data in the whole area of the magnetic disk 113 is erased as a consequence of the magnetic disk 113 rotating in the magnetic field of the permanent magnet 151 located so as to face a part of the magnetic disk 113. A back yoke 161 is located so as to face a base 111. The back yoke 161 gives a magnetic force to the spindle motor in the opposite direction of the magnetic force of the erasing permanent magnet 151 so that the fluid dynamic bearing spindle motor can retain the rotation as required without stopping rotation.

4. 发明公开

EP1592007A2 Data erasure apparatus, data erasure method and method for writing servo patterns on recording disk 审中-公开
标题翻译：数据记录盘上擦除装置，数据删除方法，和方法，用于记录伺服模式
公开(公告)号：EP1592007A2
公开(公告)日：2005-11-02
申请号：EP05003926.2
申请日：2005-02-23
申请人： Hitachi Global Storage Technologies B. V.
发明人： Kitamura, Mitsuru , Katoh, Masahiko , Tamura, Hitoshi , Uchiyama, Hiroaki , Murayama, Masashi , Ikeda, Migifumi , Sasaki, Kazuo , Watanabe, Shigeki
IPC分类号： G11B19/20 , G11B5/024 , G11B5/325 , G11B5/596
CPC分类号： G11B19/20 , G11B5/0245 , G11B5/325 , G11B5/59633
摘要： To prevent a spindle motor from stopping rotation while data on a magnetic disk is being erased by using a permanent magnet 151. Data in the whole area of the magnetic disk 113 is erased as a consequence of the magnetic disk 113 rotating in the magnetic field of the permanent magnet 151 located so as to face a part of the magnetic disk 113. A back yoke 161 is located so as to face a base 111. The back yoke 161 gives a magnetic force to the spindle motor in the opposite direction of the magnetic force of the erasing permanent magnet 151 so that the fluid dynamic bearing spindle motor can retain the rotation as required without stopping rotation.
摘要翻译：为了防止主轴马达从而磁盘上的数据是通过使用一个永久磁铁在磁盘113的整个区域151的数据被擦除的磁盘113的磁场旋转的结果擦除旋转停止永久磁铁151定位成面向磁盘113的背磁轭161被定位成面对基座的一部分111的背轭铁161给出了磁性相反的方向的磁力向主轴电机擦除永久磁铁151的力，从而没有根据需要在不停止旋转的流体动力轴承主轴电动机可以保持旋转。

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