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1.发明申请METHOD AND APPARATUS FOR CONTROLLING HEAD WITH SPIN-TORQUE OSCILLATOR IN A DISK DRIVE 有权用旋转扭矩振荡器控制磁头的方法和装置公开(公告)号：US20100232053A1
公开(公告)日：2010-09-16
申请号：US12693201
申请日：2010-01-25
IPC分类号： G11B21/02
CPC分类号： G11B5/02 , G11B5/314 , G11B2005/001 , G11B2005/0024
摘要： According to one embodiment, a disk drive has a magnetic disk and a magnetic head having a spin-torque oscillator. The disk drive further has a head amplifier IC configured to supply a write signal and a drive signal to the magnetic head. The write signal corresponds to write data. The drive signal is supplied to generate a high-frequency magnetic field. The head amplifier IC continuously supplies a drive signal of normal level to the spin-torque oscillator, and supplies a drive signal of high level higher than the normal level, only for a prescribed time after the polarity inversion of the write signal.
摘要翻译： 根据一个实施例，盘驱动器具有磁盘和具有自旋扭矩振荡器的磁头。 磁盘驱动器还具有被配置为向磁头提供写信号和驱动信号的磁头放大器IC。 写入信号对应于写入数据。 提供驱动信号以产生高频磁场。 头放大器IC连续向自旋转矩振荡器提供正常电平的驱动信号，并且在写入信号的极性反转之后的规定时间内提供高于正常电平的高电平的驱动信号。
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2.发明授权Method and apparatus for controlling head with spin-torque oscillator in a disk drive 有权用于在磁盘驱动器中用自旋扭矩振荡器控制磁头的方法和装置公开(公告)号：US08233230B2
公开(公告)日：2012-07-31
申请号：US12693201
申请日：2010-01-25
IPC分类号： G11B21/02
CPC分类号： G11B5/02 , G11B5/314 , G11B2005/001 , G11B2005/0024
摘要： According to one embodiment, a disk drive has a magnetic disk and a magnetic head having a spin-torque oscillator. The disk drive further has a head amplifier IC configured to supply a write signal and a drive signal to the magnetic head. The write signal corresponds to write data. The drive signal is supplied to generate a high-frequency magnetic field. The head amplifier IC continuously supplies a drive signal of normal level to the spin-torque oscillator, and supplies a drive signal of high level higher than the normal level, only for a prescribed time after the polarity inversion of the write signal.
摘要翻译： 根据一个实施例，盘驱动器具有磁盘和具有自旋扭矩振荡器的磁头。 磁盘驱动器还具有被配置为向磁头提供写信号和驱动信号的磁头放大器IC。 写入信号对应于写入数据。 提供驱动信号以产生高频磁场。 头放大器IC连续向自旋转矩振荡器提供正常电平的驱动信号，并且在写入信号的极性反转之后的规定时间内提供高于正常电平的高电平的驱动信号。
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3.发明申请公开(公告)号：US20050105213A1
公开(公告)日：2005-05-19
申请号：US10943226
申请日：2004-09-17
申请人： Akihiko Takeo , Koji Yano , Kazuhito Shimomura , Koji Osafune , Tsutomu Tanaka , Yoichiro Tanaka
发明人： Akihiko Takeo , Koji Yano , Kazuhito Shimomura , Koji Osafune , Tsutomu Tanaka , Yoichiro Tanaka
CPC分类号： G11B5/1278
摘要： A disk drive including a write head for perpendicular magnetic recording is disclosed. The write head includes a main recording magnetic pole which applies a perpendicular recording magnetic field onto a disk medium and an auxiliary magnetic pole, and has a structure in which the auxiliary magnetic pole is arranged on a rear end side of the main recording magnetic pole through a small gap there between in a relative movement direction of this write head. this write head.
摘要翻译： 公开了一种包括用于垂直磁记录的写入头的磁盘驱动器。 该写入头包括将垂直记录磁场施加到盘介质和辅助磁极上的主记录磁极，并且具有其中辅助磁极布置在主记录磁极的后端侧的结构 在这个写头的相对运动方向之间有一个小间隙。 这个写头。
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4.发明申请Method and apparatus for head positioning control in perpendicular magnetic recording of disk drive 失效磁盘驱动器垂直磁记录中磁头定位控制的方法和装置公开(公告)号：US20050024762A1
公开(公告)日：2005-02-03
申请号：US10901296
申请日：2004-07-29
申请人： Koji Osafune , Kazuhito Shimomura , Koji Yano
发明人： Koji Osafune , Kazuhito Shimomura , Koji Yano
CPC分类号： G11B5/59627 , G11B5/5556
摘要： A perpendicular magnetic recording disk drive is discloses which performs a head positioning control operation effectively against a hard easy transition shift (HETS) phenomenon. In the disk drive, a CPU performs an offset correcting operation in positioning control mode after a seek operation, using an offset value set on the basis of the HETS phenomenon from a memory when data is recorded.
摘要翻译： 公开了一种垂直的磁记录盘驱动器，其有效地执行头部定位控制操作以抵抗难以容易的过渡位移（HETS）现象。 在磁盘驱动器中，CPU在进行搜索操作之后，使用在记录数据时从存储器基于HETS现象设定的偏移值来执行定位控制模式中的偏移校正操作。
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5.发明授权Method and apparatus for writing servo data with perpendicular magnetic recording in a disk drive 失效在磁盘驱动器中用垂直磁记录写入伺服数据的方法和装置公开(公告)号：US07035036B2
公开(公告)日：2006-04-25
申请号：US10926393
申请日：2004-08-26
申请人： Kazuhito Shimomura , Koji Osafune , Koji Yano
发明人： Kazuhito Shimomura , Koji Osafune , Koji Yano
CPC分类号： G11B5/59633
摘要： There is disclosed a servo writing method in which servo data is recorded by a perpendicular magnetic recording system. In the servo writing method, at the time of perpendicular magnetic recording of the servo data on a disk, a servo writing operation is executed including an offset process set based on the hard-easy transition shift (HETS) phenomenon.
摘要翻译： 公开了一种伺服写入方法，其中伺服数据由垂直磁记录系统记录。 在伺服写入方法中，在磁盘上伺服数据的垂直磁记录时，执行伺服写入操作，其包括基于硬易过渡位移（HETS）现象设置的偏移处理。
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6.发明申请Method and apparatus for writing servo data with perpendicular magnetic recording in a disk drive 失效在磁盘驱动器中用垂直磁记录写入伺服数据的方法和装置公开(公告)号：US20050073771A1
公开(公告)日：2005-04-07
申请号：US10926393
申请日：2004-08-26
申请人： Kazuhito Shimomura , Koji Osafune , Koji Yano
发明人： Kazuhito Shimomura , Koji Osafune , Koji Yano
CPC分类号： G11B5/59633
摘要： There is disclosed a servo writing method in which servo data is recorded by a perpendicular magnetic recording system. In the servo writing method, at the time of perpendicular magnetic recording of the servo data on a disk, a servo writing operation is executed including an offset process set based on the hard-easy transition shift (HETS) phenomenon.
摘要翻译： 公开了一种伺服写入方法，其中伺服数据由垂直磁记录系统记录。 在伺服写入方法中，在磁盘上伺服数据的垂直磁记录时，执行伺服写入操作，其包括基于硬易过渡位移（HETS）现象设置的偏移处理。
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7.发明授权Method and apparatus for head positioning control in perpendicular magnetic recording of disk drive 失效磁盘驱动器垂直磁记录中磁头定位控制的方法和装置公开(公告)号：US07019936B2
公开(公告)日：2006-03-28
申请号：US10901296
申请日：2004-07-29
申请人： Koji Osafune , Kazuhito Shimomura , Koji Yano
发明人： Koji Osafune , Kazuhito Shimomura , Koji Yano
IPC分类号： G11B5/596
CPC分类号： G11B5/59627 , G11B5/5556
摘要： A perpendicular magnetic recording disk drive is discloses which performs a head positioning control operation effectively against a hard easy transition shift (HETS) phenomenon. In the disk drive, a CPU performs an offset correcting operation in positioning control mode after a seek operation, using an offset value set on the basis of the HETS phenomenon from a memory when data is recorded.
摘要翻译： 公开了一种垂直的磁记录盘驱动器，其有效地执行头部定位控制操作以抵抗难以容易的过渡位移（HETS）现象。 在磁盘驱动器中，CPU在进行搜索操作之后，使用在记录数据时从存储器基于HETS现象设定的偏移值来执行定位控制模式中的偏移校正操作。
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8.发明申请公开(公告)号：US20060082921A1
公开(公告)日：2006-04-20
申请号：US11294358
申请日：2005-12-06
申请人： Kazuhito Shimomura , Koji Osafune , Koji Yano
发明人： Kazuhito Shimomura , Koji Osafune , Koji Yano
IPC分类号： G11B21/02
CPC分类号： G11B5/59633
摘要： There is disclosed a servo writing method in which servo data is recorded by a perpendicular magnetic recording system. In the servo writing method, at the time of perpendicular magnetic recording of the servo data on a disk, a servo writing operation is executed including an offset process set based on the hard-easy transition shift (HETS) phenomenon.
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9.发明授权Disk drive having control circuit board mounted outside casing and head actuator coupled capacitor mounted inside casing on printed circuit board 失效磁盘驱动器具有安装在外壳上的控制电路板和安装在印刷电路板上的外壳内的头致动器耦合电容器公开(公告)号：US07158331B2
公开(公告)日：2007-01-02
申请号：US11066867
申请日：2005-02-25
申请人： Akihiro Kimura , Kazuhito Shimomura
发明人： Akihiro Kimura , Kazuhito Shimomura
CPC分类号： G11B5/54 , G11B21/12 , G11B25/043 , G11B33/12 , H05K1/189
摘要： A disk drive includes a casing which houses a disk-shaped recording medium, a drive motor which holds and rotates the recording medium, a head which performs read/write operations, a head actuator movably supporting the head to move the head relative to the recording medium, and a board unit connected to the head actuator. The board unit has a board main body arranged on the inner surface of the casing and at least one capacitor, mounted on the board main body for supplying power to perform a retracting operation for permitting the head actuator to move the head to a retracted position.
摘要翻译： 磁盘驱动器包括容纳盘形记录介质的壳体，保持和旋转记录介质的驱动马达，执行读/写操作的磁头，可移动地支撑磁头以使头相对于记录移动的磁头执行器 介质和连接到头致动器的板单元。 板单元具有布置在壳体的内表面上的板主体和安装在板主体上的用于供电的至少一个电容器，以执行用于允许头致动器将头移动到缩回位置的缩回操作。
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公开(公告)号：US20050024759A1
公开(公告)日：2005-02-03
申请号：US10901295
申请日：2004-07-29
申请人： Yuji Sakai , Kazuhito Shimomura
发明人： Yuji Sakai , Kazuhito Shimomura
CPC分类号： G11B27/3027 , G11B5/012 , G11B5/09 , G11B20/10009 , G11B2005/001 , G11B2005/0016 , G11B2005/0029 , G11B2220/20
摘要： In a disk drive that performs perpendicular magnetic recording, the read/write channel has a sync mark generator. The sync mark generator generates a second sync mark before the read/write channel operates to write data on a disk. The second sync mark has a bit pattern including a series of bits representing positive polarity and a series of bits representing negative polarity. The series of bits, which is longer than the other, has a bit length that is at least 50% but less than 85% of the total bit length of the second sync mark.
摘要翻译： 在执行垂直磁记录的磁盘驱动器中，读/写通道具有同步标记发生器。 在读/写通道操作以在盘上写数据之前，同步标记发生器产生第二同步标记。 第二同步标记具有包括表示正极性的一系列位和表示负极性的一系列位的位模式。 比另一个长的比特序列具有比第二同步标记的总位长度的至少50％但小于85％的位长度。
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