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1. 发明授权

US07460324B2 Head amplifier circuit with function for degaussing residual magnetism of recording head 失效
标题翻译：头放大器电路，具有消磁记录头剩磁的功能
公开(公告)号：US07460324B2
公开(公告)日：2008-12-02
申请号：US11215020
申请日：2005-08-31
申请人： Yusuke Ohinata , Hiroyuki Naka , Yuji Sakai
发明人： Yusuke Ohinata , Hiroyuki Naka , Yuji Sakai
IPC分类号： G11B5/03
CPC分类号： G11B5/465
摘要： In a data-recording mode, a driver circuit supplies a recording head with a recording current corresponding to write data. In a degaussing mode, the driver circuit supplies the recording head with a degaussing current for eliminating the residual magnetism of the head as the recording current. The degaussing current has a rising period and falling period set longer than those of the recording current supplied in the data-recording mode.
摘要翻译：在数据记录模式中，驱动电路向记录头提供与写数据相对应的记录电流。在消磁模式中，驱动电路为记录头提供消磁电流，以消除作为记录电流的磁头的剩磁。消磁电流具有比在数据记录模式中提供的记录电流的上升周期和下降周期长的设定。

2. 发明申请

US20060139787A1 Head amplifier circuit with function for degaussing residual magnetism of recording head 失效
标题翻译：头放大器电路，具有消磁记录头剩磁的功能
公开(公告)号：US20060139787A1
公开(公告)日：2006-06-29
申请号：US11215020
申请日：2005-08-31
申请人： Yusuke Ohinata , Hiroyuki Naka , Yuji Sakai
发明人： Yusuke Ohinata , Hiroyuki Naka , Yuji Sakai
IPC分类号： G11B5/09 , G11B5/02
CPC分类号： G11B5/465
摘要： In a data-recording mode, a driver circuit supplies a recording head with a recording current corresponding to write data. In a degaussing mode, the driver circuit supplies the recording head with a degaussing current for eliminating the residual magnetism of the head as the recording current. The degaussing current has a rising period and falling period set longer than those of the recording current supplied in the data-recording mode.
摘要翻译：在数据记录模式中，驱动电路向记录头提供与写数据相对应的记录电流。在消磁模式中，驱动电路为记录头提供消磁电流，以消除作为记录电流的磁头的剩磁。消磁电流具有比在数据记录模式中提供的记录电流的上升周期和下降周期长的设定。

3. 发明申请

US20070139811A1 Method and apparatus for head positioning control in a disk drive 失效
标题翻译：磁盘驱动器中磁头定位控制的方法和装置
公开(公告)号：US20070139811A1
公开(公告)日：2007-06-21
申请号：US11634960
申请日：2006-12-07
申请人： Yusuke Ohinata , Koji Osafune , Yuji Sakai , Masahide Yatsu
发明人： Yusuke Ohinata , Koji Osafune , Yuji Sakai , Masahide Yatsu
IPC分类号： G11B5/596
CPC分类号： G11B5/59627 , G11B5/5582 , G11B19/042
摘要： According to one embodiment, a disk drive is provided which corrects already existing offset information according to a variation of a disk runout amount caused by an occurrence of a disk shift. The disk drive effects a head position adjustment at a head positioning control time with the use of offset information stored in a memory. A CPU measures a variation in the disk runout amount and phase caused by an occurrence of a disk shift resulting from an external shock involved and updates the existing offset information with a correction offset information based on a result of measurement.
摘要翻译：根据一个实施例，提供了一种磁盘驱动器，其根据由磁盘移位的发生引起的磁盘跳动量的变化来校正已经存在的偏移信息。磁盘驱动器通过使用存储在存储器中的偏移信息来实现磁头定位控制时间的磁头位置调节。 CPU测量由于涉及的外部冲击导致的磁盘偏移的发生引起的磁盘跳动量和相位的变化，并且基于测量结果用修正偏移信息更新现有的偏移信息。

4. 发明授权

US07489468B2 Method and apparatus for head positioning control in a disk drive 失效
标题翻译：磁盘驱动器中磁头定位控制的方法和装置
公开(公告)号：US07489468B2
公开(公告)日：2009-02-10
申请号：US11634960
申请日：2006-12-07
申请人： Yusuke Ohinata , Koji Osafune , Yuji Sakai , Masahide Yatsu
发明人： Yusuke Ohinata , Koji Osafune , Yuji Sakai , Masahide Yatsu
IPC分类号： G11B5/596
CPC分类号： G11B5/59627 , G11B5/5582 , G11B19/042
摘要： According to one embodiment, a disk drive is provided which corrects already existing offset information according to a variation of a disk runout amount caused by an occurrence of a disk shift. The disk drive effects a head position adjustment at a head positioning control time with the use of offset information stored in a memory. A CPU measures a variation in the disk runout amount and phase caused by an occurrence of a disk shift resulting from an external shock involved and updates the existing offset information with a correction offset information based on a result of measurement.
摘要翻译：根据一个实施例，提供了一种磁盘驱动器，其根据由磁盘移位的发生引起的磁盘跳动量的变化来校正已经存在的偏移信息。磁盘驱动器通过使用存储在存储器中的偏移信息来实现磁头定位控制时间的磁头位置调节。 CPU测量由于涉及的外部冲击导致的磁盘偏移的发生引起的磁盘跳动量和相位的变化，并且基于测量结果用修正偏移信息更新现有的偏移信息。

5. 发明授权

US06912769B2 Method a fabricating a magnetic head 失效
标题翻译：制造磁头的方法a
公开(公告)号：US06912769B2
公开(公告)日：2005-07-05
申请号：US10389765
申请日：2003-03-18
申请人： Hiroaki Yoda , Kohichi Tateyama , Yusuke Ohinata
发明人： Hiroaki Yoda , Kohichi Tateyama , Yusuke Ohinata
IPC分类号： G11B5/31 , G11B5/00 , G11B5/012 , G11B5/127 , G11B21/21 , H04B31/00
CPC分类号： G11B5/1278 , G11B5/00 , G11B5/012 , G11B5/3106 , G11B2005/0029 , Y10T29/49032 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49815
摘要： A magnetic head is configured by forming a thin-film-shaped magnetic element on top of a thin film that is provided parallel to a medium-facing surface. An aperture is formed in the thin film, and part of a main magnetic pole is formed to have a tip portion that protrudes into that aperture. This configuration makes it possible to impose highly accurate control over the amount by which thin-film-shaped magnetic elements are recessed from the medium-facing surface, while simultaneously exerting accurate control over the amount of protrusion of the main magnetic pole tip portion by making the thickness of the thin film extremely small. As a result, the recording flux strength at the main magnetic pole tip portion can be increased to the ultimate value thereof, making it possible to supply a head that can record on a high retention force medium suitable for higher densities.
摘要翻译：通过在平行于中间面的表面设置的薄膜的顶部上形成薄膜状磁性元件来构成磁头。在薄膜中形成孔，并且主磁极的一部分形成为具有突出到该孔中的尖端部分。通过这样的构成，能够对从中间面向薄膜状的磁性体的凹陷量进行高度精确的控制，同时通过制造主磁极尖端部的突出量来进行精确的控制薄膜的厚度极小。结果，可以将主磁极尖端部分处的记录磁通强度增加到其最终值，使得可以提供可以记录在适合于更高密度的高保持力介质上的磁头。

6. 发明申请

US20080180833A1 METHOD AND APPARATUS FOR SPACING CONTROL IN A DISK DRIVE 审中-公开
标题翻译：用于在磁盘驱动器中间隔控制的方法和装置
公开(公告)号：US20080180833A1
公开(公告)日：2008-07-31
申请号：US11954597
申请日：2007-12-12
申请人： Yusuke Ohinata
发明人： Yusuke Ohinata
IPC分类号： G11B21/02
CPC分类号： G11B19/042 , G11B5/3133 , G11B5/5582 , G11B5/6064 , G11B5/6076
摘要： According to one embodiment, a disk drive includes a head, a shock sensor, and a controller. The head has a heating element for controlling the spacing between a disk medium and the head. When the shock sensor detects an impact applied to the disk drive, the controller controls the heating element, increasing the spacing between the head and the disk medium.
摘要翻译：根据一个实施例，盘驱动器包括头，冲击传感器和控制器。头部具有用于控制盘介质和头部之间的间隔的加热元件。当冲击传感器检测到对磁盘驱动器的冲击时，控制器控制加热元件，增加磁头和磁盘介质之间的间距。

7. 发明授权

US06198583B1 Magnetic recording control system for disk storage drive 失效
标题翻译：磁盘存储驱动磁记录控制系统
公开(公告)号：US06198583B1
公开(公告)日：2001-03-06
申请号：US09141662
申请日：1998-08-28
申请人： Yusuke Ohinata , Kazuhito Shimomura , Akihiro Kimura , Yoshio Horiguchi
发明人： Yusuke Ohinata , Kazuhito Shimomura , Akihiro Kimura , Yoshio Horiguchi
IPC分类号： G11B509
CPC分类号： G11B5/02 , G11B5/012 , G11B5/09 , G11B2005/001 , G11B2005/0013
摘要： In a data recording system used for a magnetic disk drive, a write amplifier feeds a write head with a recording current that corresponds to the data to be recorded on the disk. A recording current controller selects a current value to be fed to the write head from the write amplifier according to the recording pattern detected by a pattern detection circuit. Thus, an effective recording track width can be selected without relying on the recording wavelength of the data to be recorded. Therefore, the influence of the cross talk from adjacently located tracks can be effectively reduced without unnecessarily reducing the recording track width.
摘要翻译：在用于磁盘驱动器的数据记录系统中，写入放大器向写入头馈送与要记录在盘上的数据相对应的记录电流。记录电流控制器根据由模式检测电路检测的记录模式从写入放大器中选择要馈送到写入头的电流值。因此，可以选择有效的记录轨道宽度，而不依赖于要记录的数据的记录波长。因此，可以有效地减少来自相邻位置的轨道的串扰的影响，而不必不必要地减小记录轨道宽度。

8. 发明授权

US5712739A Magnetic disk drive system with a composite head unit including a magnetoresistive read only head and an inductive write only head 失效
标题翻译：具有复合磁头单元的磁盘驱动系统，包括磁阻读头和仅感应写头
公开(公告)号：US5712739A
公开(公告)日：1998-01-27
申请号：US337437
申请日：1994-11-08
申请人： Norio Nakamura , Yusuke Ohinata , Junichi Akiyama , Nobuyasu Goto
发明人： Norio Nakamura , Yusuke Ohinata , Junichi Akiyama , Nobuyasu Goto
IPC分类号： G11B5/00 , G11B5/012 , G11B5/09 , G11B5/39 , G11B19/02 , G11B5/127
CPC分类号： G11B5/3967 , G11B19/02 , G11B5/012 , G11B5/09 , G11B2005/0018
摘要： A magnetic disk drive system for writing data into a disk-shaped magnetic medium and reading data stored therein, comprises a first terminal, a second terminal, and at least one third terminal, a composite head unit including an inductive write head and at least one magnetoresistive read head which are connected in series between the first and second terminals, and at least one common connection node connected to the at least one third terminal, and a driving circuit connected to the first through third terminals. The driving circuit includes a write circuit for supplying a write current to the write head, a read circuit for supplying a sense current to the read head to generate a read signal, and a plurality of switches for connecting the write circuit to the write head and electrically disconnecting the read circuit from the composite head unit and the write circuit during writing, and for connecting the read circuit to the read head and electrically disconnecting the write circuit from the composite head unit and the read circuit during reading.
摘要翻译：一种磁盘驱动系统，用于将数据写入盘形磁介质并读取存储在其中的数据，包括第一端子，第二端子和至少一个第三端子，复合磁头单元，其包括感应写头和至少一个磁阻读取头串联连接在第一和第二端子之间，以及至少一个公共连接节点连接到至少一个第三端子，以及驱动电路，连接到第一至第三端子。驱动电路包括用于向写入头提供写入电流的写入电路，用于向读取头提供感测电流以产生读取信号的读取电路，以及用于将写入电路连接到写入头的多个开关，以及在写入期间将读取电路与复合磁头单元和写入电路电连接，并且用于将读取电路连接到读取磁头，并且在读取期间将写入电路与复合磁头单元和读取电路电连接。

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