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公开(公告)号：US08199429B2
公开(公告)日：2012-06-12
申请号：US12076440
申请日：2008-03-18
申请人： Hiromi Yuasa , Tomoko Taguchi , Hideaki Fukuzawa
发明人： Hiromi Yuasa , Tomoko Taguchi , Hideaki Fukuzawa
CPC分类号： G11B5/314 , G11B5/02 , G11B5/1278 , G11B5/3163 , G11B2005/0002
摘要： A magnetic recording head includes: a main magnetic pole containing a ferromagnetic layer; a main magnetic pole-magnetization fixing portion containing an antiferromagnetic layer in contact with at least one side surface of the main magnetic pole; a heater for heating at least the main magnetic pole so that a magnetic interaction between the main magnetic pole and the main magnetic pole-magnetization fixing portion can be decreased; and a magnetic field generator for generating a magnetic field so as to direct a magnetization of the main magnetic pole in one direction.
摘要翻译： 磁记录头包括：含有铁磁层的主磁极; 主磁极固定部，其包含与所述主磁极的至少一个侧面接触的反铁磁层; 用于加热至少主磁极的加热器，使得能够减小主磁极和主磁极固定部之间的磁相互作用; 以及用于产生磁场以引导主磁极在一个方向上的磁化的磁场发生器。
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公开(公告)号：US07239472B2
公开(公告)日：2007-07-03
申请号：US11376594
申请日：2006-03-16
申请人： Hideo Sado , Masahide Yatsu , Tomoko Taguchi
发明人： Hideo Sado , Masahide Yatsu , Tomoko Taguchi
CPC分类号： G11B20/10 , G11B5/59688 , G11B20/1258 , G11B2220/2516
摘要： According to one embodiment, there is to provide a data write method which is applied to a disk drive, for recording data on a disk medium by a head mounted on a rotary type actuator. The method carries out a track pitch conversion processing so that a track pitch of data track is set larger than a track pitch in an intermediate circumferential area based on an azimuth angle of the head in the case where the position of the data track is included in an inner circumferential area or outer circumferential area on the disk medium.
摘要翻译： 根据一个实施例，提供一种应用于磁盘驱动器的数据写入方法，用于通过安装在旋转型致动器上的磁头在磁盘介质上记录数据。 该方法执行轨道间距转换处理，使得在包括数据轨道的位置的情况下，基于头部的方位角，将数据轨道的轨道间距设置为大于中间圆周区域中的轨道间距 盘介质上的内圆周区域或外圆周区域。
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43.发明授权公开(公告)号：US07170723B2
公开(公告)日：2007-01-30
申请号：US10349211
申请日：2003-01-23
申请人： Tomoko Taguchi
发明人： Tomoko Taguchi
IPC分类号： G11B5/33
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/012 , G11B5/02 , G11B5/09 , G11B5/3909 , G11B2005/001 , G11B2005/0016 , G11B2005/0029
摘要： A magnetic disk apparatus has a magnetic recording medium including a recording layer formed on a nonmagnetic substrate, and a magnetic head including a magnetoresistive film arranged above the magnetic recording medium and a pair of electrodes formed on both surfaces of the magnetoresistive film along a track direction so as to make a sense current flow in a direction perpendicular to a plane of the magnetoresistive film. The recording layer has an easy axis of magnetization in a direction perpendicular to a track width direction, which is a direction of a magnetic field generated by the flow of the sense current, a ratio MA/Me of which recording layer is smaller than 0.6, where MA is a remanent magnetization in the track width direction and Me is a remanent magnetization in the direction of the easy axis of magnetization.
摘要翻译： 磁盘装置具有包括形成在非磁性基板上的记录层的磁记录介质，以及包括布置在磁记录介质上方的磁阻膜的磁头和沿着磁道方向形成在磁阻膜的两个表面上的一对电极 以便在垂直于磁阻膜的平面的方向上形成感测电流。 记录层在垂直于轨道宽度方向的方向上具有容易的磁化轴，该磁道宽度方向是由感测电流的流动产生的磁场的方向，M / A / 其中记录层小于0.6，其中M A A是轨道宽度方向上的残余磁化强度，M e e是剩余磁化强度 易磁化轴的方向。
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公开(公告)号：US20060209452A1
公开(公告)日：2006-09-21
申请号：US11376594
申请日：2006-03-16
申请人： Hideo Sado , Masahide Yatsu , Tomoko Taguchi
发明人： Hideo Sado , Masahide Yatsu , Tomoko Taguchi
IPC分类号： G11B20/20
CPC分类号： G11B20/10 , G11B5/59688 , G11B20/1258 , G11B2220/2516
摘要： According to one embodiment, there is to provide a data write method which is applied to a disk drive, for recording data on a disk medium by a head mounted on a rotary type actuator. The method carries out a track pitch conversion processing so that a track pitch of data track is set larger than a track pitch in an intermediate circumferential area based on an azimuth angle of the head in the case where the position of the data track is included in an inner circumferential area or outer circumferential area on the disk medium.
摘要翻译： 根据一个实施例，提供一种应用于磁盘驱动器的数据写入方法，用于通过安装在旋转型致动器上的磁头在磁盘介质上记录数据。 该方法执行轨道间距转换处理，使得在包括数据轨道的位置的情况下，基于头部的方位角，将数据轨道的轨道间距设置为大于中间圆周区域中的轨道间距 盘介质上的内圆周区域或外圆周区域。
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公开(公告)号：US06930843B2
公开(公告)日：2005-08-16
申请号：US09949625
申请日：2001-09-12
申请人： Yuka Aoyagi , Akihiko Takeo , Tomoko Taguchi
发明人： Yuka Aoyagi , Akihiko Takeo , Tomoko Taguchi
CPC分类号： G11B21/12 , G11B5/012 , G11B19/04 , G11B27/36 , G11B2005/001 , G11B2220/20
摘要： There is disclosed a disk drive provided with a function of suspending a read/write operation in the case where the magnetic field of the magnetic disturbance out of the predetermined range is generated. The disk drive has a head writing data to the disk, a sensor detecting a magnetic field with respect to the disk drive, and an actuator unloading the head from the surface of the disk to a retracting position outside of the disk when the detected magnetic field is out of a predetermined range.
摘要翻译： 公开了一种磁盘驱动器，其具有在产生磁干扰的磁场超出预定范围的情况下暂停读/写操作的功能。 磁盘驱动器具有写入盘的数据头，相对于磁盘驱动器检测磁场的传感器，以及将磁头从磁盘表面卸载到盘外部的缩回位置的致动器，当检测到的磁场 超出预定范围。
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46.发明授权公开(公告)号：US06639754B2
公开(公告)日：2003-10-28
申请号：US09951380
申请日：2001-09-14
IPC分类号： G11B5127
CPC分类号： G11B5/1278 , G11B5/012 , G11B2005/0029
摘要： A perpendicular magnetic recording apparatus includes a magnetic disk having a perpendicular double-layer film and a perpendicular magnetic recording head having a leading pole positioned forward along the head traveling direction, a trailing pole positioned backward along the head traveling direction at a gap length from the leading pole and having, in an air-bearing surface, a forward pole and a rearward pole of which saturation magnetic flux density is higher than that of the forward pole, and an exciting coil. A length p of the trailing pole along the head traveling direction is longer than a length T of the trailing pole in a track width direction, the length p is longer than the gap length g1, and a length p1 of the rearward pole is shorter than a length p2 of the forward pole along the head traveling direction.
摘要翻译： 垂直磁记录装置包括具有垂直双层膜的磁盘和具有沿磁头行进方向向前定位的前导磁极的垂直磁记录头，沿着磁头行进方向向后延伸的后退磁极， 在空气轴承表面上具有饱和磁通密度高于正极的正极和后极以及励磁线圈。 沿着磁头行进方向的尾磁极的长度p比轨道宽度方向上的尾磁极的长度T长，长度p比间隙长度g1长，并且后极的长度p1比 沿着磁头行进方向的前极的长度p2。
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公开(公告)号：US5956194A
公开(公告)日：1999-09-21
申请号：US933866
申请日：1997-09-19
IPC分类号： G11B20/10 , G06F1/00 , G06F21/02 , G11B5/54 , G11B19/04 , G11B19/10 , G11B20/00 , G11B23/03 , G11B23/28 , G11B25/04 , G11B33/08 , G11B15/04
CPC分类号： G11B19/04 , G11B23/286 , G11B23/287 , G11B25/043 , G11B33/08 , G11B20/00086 , G11B23/0303 , G11B5/54
摘要： A data storage apparatus (HDD unit) having a cartridge, attachable to and detachable from a personal computer, incorporating a recording disk, comprises a switch circuit for inhibiting data reading and writing with respect to a magnetic disk and a locking mechanism for detecting that the cartridge is detached from the personal computer and causing a data reading and writing inhibiting device to operate in response to the detection.
摘要翻译： 一种数据存储装置（HDD单元），其具有可附接到个人计算机并且可拆卸的盒式磁带，包括记录盘，包括用于禁止关于磁盘的数据读取和写入的开关电路和用于检测 墨盒与个人计算机分离，并导致数据读写禁止装置响应于检测而操作。
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48.发明授权公开(公告)号：US08588037B2
公开(公告)日：2013-11-19
申请号：US13419394
申请日：2012-03-13
IPC分类号： G11B11/00
CPC分类号： G11B20/10009 , G11B5/3133 , G11B5/6088 , G11B20/10305 , G11B20/10509 , G11B27/36 , G11B2005/0021 , G11B2220/2508
摘要： A magnetic disk device of an embodiment includes a magnetic disk, a magnetic head, a laser-beam-intensity control unit, a reproduced-signal detecting unit, and a magnetic-disk evaluating unit. The magnetic head reads a signal recorded in the magnetic disk, or performs magnetic recording while irradiating a laser beam onto the magnetic disk. The laser-beam-intensity control unit controls the intensity of the laser beam. The reproduced-signal detecting unit detects the signal read by the magnetic head. The magnetic-disk evaluating unit evaluates the signal read from the magnetic head, on the basis of a relation between a noise level detected from the signal read by the magnetic head, and the intensity of the laser beam.
摘要翻译： 一个实施例的磁盘装置包括磁盘，磁头，激光束强度控制单元，再现信号检测单元和磁盘评估单元。 磁头读取记录在磁盘中的信号，或者在将激光束照射到磁盘上时进行磁记录。 激光束强度控制单元控制激光束的强度。 再现信号检测单元检测由磁头读取的信号。 磁盘评估单元基于从由磁头读取的信号检测到的噪声电平与激光束的强度之间的关系来评估从磁头读取的信号。
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49.发明申请公开(公告)号：US20130176835A1
公开(公告)日：2013-07-11
申请号：US13419394
申请日：2012-03-13
CPC分类号： G11B20/10009 , G11B5/3133 , G11B5/6088 , G11B20/10305 , G11B20/10509 , G11B27/36 , G11B2005/0021 , G11B2220/2508
摘要： A magnetic disk device of an embodiment includes a magnetic disk, a magnetic head, a laser-beam-intensity control unit, a reproduced-signal detecting unit, and a magnetic-disk evaluating unit. The magnetic head reads a signal recorded in the magnetic disk, or performs magnetic recording while irradiating a laser beam onto the magnetic disk. The laser-beam-intensity control unit controls the intensity of the laser beam. The reproduced-signal detecting unit detects the signal read by the magnetic head. The magnetic-disk evaluating unit evaluates the signal read from the magnetic head, on the basis of a relation between a noise level detected from the signal read by the magnetic head, and the intensity of the laser beam.
摘要翻译： 一个实施例的磁盘装置包括磁盘，磁头，激光束强度控制单元，再现信号检测单元和磁盘评估单元。 磁头读取记录在磁盘中的信号，或者在将激光束照射到磁盘上时进行磁记录。 激光束强度控制单元控制激光束的强度。 再现信号检测单元检测由磁头读取的信号。 磁盘评估单元基于从由磁头读取的信号检测到的噪声电平与激光束的强度之间的关系来评估从磁头读取的信号。
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50.发明申请公开(公告)号：US20120262821A1
公开(公告)日：2012-10-18
申请号：US13296004
申请日：2011-11-14
CPC分类号： G11B5/314 , G11B5/235 , G11B2005/0024
摘要： According to one embodiment, a magnetic recording head includes a main pole configured to apply a recording magnetic field perpendicular to a recording medium, a trailing-shield pole opposed to the main pole with a recording gap therebetween, a high-frequency oscillator between the main pole and the trailing-shield pole in the recording gap, configured to produce a high-frequency magnetic field, a magnetic seed layer between the main pole and the high-frequency oscillator and in contact with the main pole, and a highly oriented magnetic layer of a soft magnetic material superposed on the magnetic seed layer between the main pole and the high-frequency oscillator and in contact with the high-frequency oscillator.
摘要翻译： 根据一个实施例，磁记录头包括被配置为施加垂直于记录介质的记录磁场的主极，与主极相对的后屏蔽极，其间具有记录间隙，在主体之间的高频振荡器 磁极和后屏蔽极在记录间隙中，被配置为产生高频磁场，主极和高频振荡器之间的磁性种子层，并与主极接触，并且高取向磁性层 叠置在主极与高频振荡器之间的磁性种子层上并与高频振荡器接触的软磁性材料。
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