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1. 发明授权

US06898039B2 Positioning control device for two-stage actuator 失效
标题翻译：两级执行器定位控制装置
公开(公告)号：US06898039B2
公开(公告)日：2005-05-24
申请号：US10600708
申请日：2003-06-23
申请人： Masahito Kobayashi , Hidehiko Numasato , Atsushi Okuyama
发明人： Masahito Kobayashi , Hidehiko Numasato , Atsushi Okuyama
IPC分类号： G11B5/596 , G11B5/48 , G11B5/55 , G11B21/08 , G11B21/10 , G11B19/04
CPC分类号： G11B5/4806 , G11B5/5526
摘要： In a positioning control device for a two-stage actuator having a coarse-movement actuator and a fine-movement actuator, a notch filter having a cutoff frequency fn is provided to a coarse-movement control loop, and the fine-movement actuator is driven by a sine wave of the frequency fn. At the frequency fn, a head position signal becomes identical with an output signal of the fine-movement actuator, by which the gain of the fine-movement actuator can be estimated by an adaptive identification unit with high accuracy based on the control input to the fine-movement actuator and the head position signal.
摘要翻译：在具有粗动执行器和精细运动致动器的两级致动器的定位控制装置中，具有截止频率fn的陷波滤波器被提供给粗动控制回路，并且微动运动致动器被驱动通过频率fn的正弦波。在频率fn上，头部位置信号变成与微动作致动器的输出信号相同，通过该精细运动致动器的输出信号，可以通过自适应识别单元以高精度来估计增益，基于对精细运动执行器和头位置信号。

2. 发明授权

US06707633B2 Magnetic disk device including coarse and micro actuators 失效
标题翻译：磁盘装置包括粗调和微型致动器
公开(公告)号：US06707633B2
公开(公告)日：2004-03-16
申请号：US09791726
申请日：2001-02-26
申请人： Atsushi Okuyama , Masaki Odai , Hidehiko Numasato , Shigeo Nakamura , Masahito Kobayashi
发明人： Atsushi Okuyama , Masaki Odai , Hidehiko Numasato , Shigeo Nakamura , Masahito Kobayashi
IPC分类号： G11B2102
CPC分类号： G11B5/5552
摘要： A magnetic disk device comprises at least a disk having information, at least a head for reading or writing information from or into the disk, at least a micro actuator for supporting the head and positioning the head, a coarse actuator for carrying the micro actuator and positioning the head, a controller for controlling the micro actuator and the coarse actuator based on the servo information read by the head, and a host controller for determining that information is to be read. In the case where the host controller determines that the operation is in a wait mode, the positioning operation of the micro actuator is stopped.
摘要翻译：磁盘装置至少包括具有信息的盘，至少一个用于读取或写入盘的信息的头，至少一个用于支撑头部和定位头部的微致动器，用于承载微致动器的粗致动器和定位头部，用于根据由头部读取的伺服信息来控制微型执行器和粗略致动器的控制器，以及用于确定要读取该信息的主机控制器。在主机控制器确定操作处于等待模式的情况下，微型致动器的定位操作停止。

3. 发明授权

US06335845B1 Magnetic disk apparatus having an accelerometer for detecting acceleration in the positioning direction of the magnetic head 失效
公开(公告)号：US06335845B1
公开(公告)日：2002-01-01
申请号：US09117333
申请日：1998-07-22
申请人： Takashi Yamaguchi , Katsuhiro Tsuneta , Katsumoto Onoyama , Tsuyoshi Arai , Yoshikatsu Fujii , Hidehiko Numasato , Yosuke Hamada , Masahito Kobayashi
发明人： Takashi Yamaguchi , Katsuhiro Tsuneta , Katsumoto Onoyama , Tsuyoshi Arai , Yoshikatsu Fujii , Hidehiko Numasato , Yosuke Hamada , Masahito Kobayashi
IPC分类号： G11B2102
CPC分类号： G11B5/553
摘要： A sector servo type magnetic disk apparatus is provided with, in addition to servo signals, a sensor such as an accelerometer for detecting a state of a magnetic head or a support for the magnetic head at a period shorter than a sampling period of the servo signals. Since an accelerometer mounted on the magnetic head or the support for the magnetic head detects an acceleration, the control performance of a servo control system can be improved, such as reduction of generation of mechanism resonance vibrations of a carriage and improvement on detection precision of a speed signal.

4. 发明授权

US06407876B1 Magnetic disk apparatus having an accelerometer for detecting acceleration in the positioning direction of the magnetic head 失效
标题翻译：具有用于检测磁头的定位方向的加速度的加速度计的磁盘装置
公开(公告)号：US06407876B1
公开(公告)日：2002-06-18
申请号：US09986298
申请日：2001-11-08
申请人： Takashi Yamaguchi , Katsuhiro Tsuneta , Katsumoto Onoyama , Tsuyoshi Arai , Yoshikatsu Fujii , Hidehiko Numasato , Yosuke Hamada , Masahito Kobayashi
发明人： Takashi Yamaguchi , Katsuhiro Tsuneta , Katsumoto Onoyama , Tsuyoshi Arai , Yoshikatsu Fujii , Hidehiko Numasato , Yosuke Hamada , Masahito Kobayashi
IPC分类号： G11B2102
CPC分类号： G11B5/553
摘要： A sector servo type magnetic disk apparatus is provided with, in addition to servo signals, a sensor such as an accelerometer for detecting a state of a magnetic head or a support for the magnetic head at a period shorter than a sampling period of the servo signals. Since an accelerometer mounted on the magnetic head or the support for the magnetic head detects an acceleration, the control performance of a servo control system can be improved, such as reduction of generation of mechanism resonance vibrations of a carriage and improvement on detection precision of a speed signal.
摘要翻译：除了伺服信号之外，扇区伺服型磁盘装置还设置有诸如用于在短于伺服信号的采样周期的时间段内检测磁头的状态或磁头的支撑的诸如加速度计的传感器。由于安装在磁头上的加速度计或磁头支撑件检测到加速度，所以可以提高伺服控制系统的控制性能，例如减少滑架的机构共振振动的产生，提高检测精度速度信号。

5. 发明申请

US20060039079A1 Magnetic disk apparatus with dual stage actuator 有权
标题翻译：带双级执行器的磁盘设备
公开(公告)号：US20060039079A1
公开(公告)日：2006-02-23
申请号：US11200999
申请日：2005-08-09
申请人： Masahito Kobayashi , Shinsuke Nakagawa , Hidehiko Numasato , Yoshio Soyama
发明人： Masahito Kobayashi , Shinsuke Nakagawa , Hidehiko Numasato , Yoshio Soyama
IPC分类号： G11B5/596
CPC分类号： G11B5/596 , G11B5/556
摘要： In one embodiment, a magnetic disk apparatus comprises a magnetic disk for recording information; a magnetic head that reads information from, or writes information to, the magnetic disk; an actuator device that drives the magnetic head; and a control system that controls the driving of the actuator device. The actuator device is configured by a dual stage actuator comprising a fine actuator that drives the head and a coarse actuator that drives the magnetic head together with the fine actuator. The control system includes a fine controller that generates an operational value for driving the fine actuator and a coarse controller that generates an operational amount for driving the coarse actuator. The control system includes a mechanism for smoothly changing the operational amount generated by the fine controller immediately before saturation resulting from an applied voltage limit of the fine actuator or at the time the fine actuator returns to a control range from the saturation.
摘要翻译：在一个实施例中，磁盘装置包括用于记录信息的磁盘; 从磁盘读取信息或将信息写入磁盘的磁头; 驱动磁头的致动器装置; 以及控制致动器装置的驱动的控制系统。致动器装置由双级致动器构成，该双级致动器包括驱动头部的精细致动器和与精细致动器一起驱动磁头的粗略致动器。该控制系统包括产生用于驱动精细致动器的操作值的精细控制器和产生用于驱动粗动作器的操作量的粗略控制器。该控制系统包括一个机构，用于在精细致动器施加的电压极限之前或在精细致动器从饱和状态返回到控制范围时，立即在精确控制器产生的精确控制器之前平滑地改变操作量。

6. 发明授权

US07173790B2 Magnetic disk apparatus with dual stage actuator 有权
标题翻译：带双级执行器的磁盘设备
公开(公告)号：US07173790B2
公开(公告)日：2007-02-06
申请号：US11200999
申请日：2005-08-09
申请人： Masahito Kobayashi , Shinsuke Nakagawa , Hidehiko Numasato , Yoshio Soyama
发明人： Masahito Kobayashi , Shinsuke Nakagawa , Hidehiko Numasato , Yoshio Soyama
IPC分类号： G11B5/596
CPC分类号： G11B5/596 , G11B5/556
摘要： In one embodiment, a magnetic disk apparatus comprises a magnetic disk for recording information; a magnetic head that reads information from, or writes information to, the magnetic disk; an actuator device that drives the magnetic head; and a control system that controls the driving of the actuator device. The actuator device is configured by a dual stage actuator comprising a fine actuator that drives the head and a coarse actuator that drives the magnetic head together with the fine actuator. The control system includes a fine controller that generates an operational value for driving the fine actuator and a coarse controller that generates an operational amount for driving the coarse actuator. The control system includes a mechanism for smoothly changing the operational amount generated by the fine controller immediately before saturation resulting from an applied voltage limit of the fine actuator or at the time the fine actuator returns to a control range from the saturation.
摘要翻译：在一个实施例中，磁盘装置包括用于记录信息的磁盘; 从磁盘读取信息或将信息写入磁盘的磁头; 驱动磁头的致动器装置; 以及控制致动器装置的驱动的控制系统。致动器装置由双级致动器构成，该双级致动器包括驱动头部的精细致动器和与精细致动器一起驱动磁头的粗略致动器。该控制系统包括产生用于驱动精细致动器的操作值的精细控制器和产生用于驱动粗动作器的操作量的粗略控制器。该控制系统包括一个机构，用于在精细致动器施加的电压极限之前或在精细致动器从饱和状态返回到控制范围时，立即在精确控制器产生的精确控制器之前平滑地改变操作量。

7. 发明授权

US5986845A Apparatus for positioning magnetic head and method of the same 失效
标题翻译：磁头定位装置及其方法
公开(公告)号：US5986845A
公开(公告)日：1999-11-16
申请号：US823837
申请日：1997-03-25
申请人： Takashi Yamaguchi , Katsuhiro Tsuneta , Katsumoto Onoyama , Tsuyoshi Arai , Yoshikatsu Fujii , Hidehiko Numasato , Yosuke Hamada , Masahito Kobayashi
发明人： Takashi Yamaguchi , Katsuhiro Tsuneta , Katsumoto Onoyama , Tsuyoshi Arai , Yoshikatsu Fujii , Hidehiko Numasato , Yosuke Hamada , Masahito Kobayashi
IPC分类号： G11B21/10 , G11B5/596 , G11B19/04 , G11B21/02
CPC分类号： G11B5/59605 , G11B19/04
摘要： An apparatus for positioning a magnetic head includes a servo signal detection circuit for detecting a servo signal recorded on a magnetic disk in a predetermined first period, an acceleration measuring portion which is fitted to a part of a mechanism for mounting a magnetic head, outputs an acceleration signal in a direction of positioning the magnetic head, and samples the acceleration signal in a second period shorter than the first period, a comparison processing portion for comparing a deviation value computed from at least either one of the acceleration signal and the servo signal with a predetermined value, a write inhibit signal generating portion for generating a signal inhibiting write of data on a magnetic disk in accordance with the result of comparison in the comparison processing portion, and a manipulated variable compensation portion for generating manipulated variable for adjusting the position of the magnetic head from at least either one of the servo signal and the acceleration signal and a target value of the position of the magnetic head, whereby to prevent erroneous write operation of data onto a magnetic disk due to unsteady positioning error of the magnetic head.
摘要翻译：用于定位磁头的装置包括：伺服信号检测电路，用于在预定的第一时段内检测记录在磁盘上的伺服信号;加速度测量部分，其安装在用于安装磁头的机构的一部分上，加速度信号，并且在比第一期间短的第二期间对加速度信号进行采样，比较处理部，将从加速度信号和伺服信号中的至少一个计算的偏差值与写入禁止信号产生部分，用于根据比较处理部分中的比较结果产生禁止在磁盘上写入数据的信号;以及操作变量补偿部分，用于产生用于调整位置的位置的调节变量来自伺服信号和a中的至少一个的磁头加速信号和磁头的位置的目标值，由此由于磁头的不稳定的定位误差而导致数据在磁盘上的错误写入操作。

8. 发明申请

US20130010389A1 PATTERNED MEDIA WITH AN ALTERNATING SERIES OF CONCENTRIC SERVO ZONES AND OVERLAP ZONES 有权
公开(公告)号：US20130010389A1
公开(公告)日：2013-01-10
申请号：US13177445
申请日：2011-07-06
申请人： Keiichiro Nonaka , Kei Yasuna , Masahito Kobayashi
发明人： Keiichiro Nonaka , Kei Yasuna , Masahito Kobayashi
IPC分类号： G11B5/82
CPC分类号： G11B5/82 , G11B5/59688 , G11B5/746 , G11B20/1258 , G11B2020/1267 , G11B2020/1281 , G11B2020/1287 , G11B2220/2516
摘要： Embodiments described herein provide for patterned media concentric zones with an alternating series of concentric servo zones and overlap zones. The overlap zones facilitate the writing of servo data between servo zones of different servo frequency. The overlap zones may be dual frequency zones. The dual frequency zones have a first set of overlap patterns with the substantially identical pattern as the bordering lower frequency servo zone and a second set of overlap patterns with the substantially identical pattern as the bordering higher frequency servo zone. A bootstrap zone can be included near the inner diameter to assist initial servo writing. Alternatively the overlap zones are bootstrap zones. Such bootstrap zones have both bootstrap patterns and overlap patterns, the overlap patterns have the substantially identical pattern as a bordering servo zone. Bootstrap patterns only require DC magnetization for servo operability.

9. 发明申请

US20130010385A1 SERVO PATTERN COMPATIBLE WITH PLANARIZATION CONSTRAINTS OF PATTERNED MEDIA AND USE OF A SINGLE MASTER TEMPLATE 失效
标题翻译： SERVO模式与图形媒体的平面约束兼容，并使用单个主模板
公开(公告)号：US20130010385A1
公开(公告)日：2013-01-10
申请号：US13177155
申请日：2011-07-06
申请人： Keiichiro Nonaka , Kei Yasuna , Masahito Kobayashi
发明人： Keiichiro Nonaka , Kei Yasuna , Masahito Kobayashi
IPC分类号： G11B5/596
CPC分类号： G11B5/59688 , B82Y10/00 , G11B5/59655
摘要： Embodiments described herein provide for robust servo patterns that comply with planarization constraints and also allow use of a single master template for manufacture of both the front and back of a magnetic disk. Planarization constraints are met because only a portion of servo data is hard patterned on the magnetic disk and the hard patterned servo data areas comply with planarization constraints. The servo pattern has two symmetrical servo write assist patterns, one on each side of a central burst pattern. The servo sync, SAM, track-ID, sector-ID, and/or RRO values can be written magnetically by the write head onto these servo write assist patterns after the completion of the planarization process. The symmetric design of the servo pattern allows both a left-to-right and a right-to-left servo write and read back, thereby enabling use of a single master template in magnetic disk manufacture.
摘要翻译：本文描述的实施例提供了符合平坦化约束的鲁棒伺服模式，并且还允许使用单个主模板来制造磁盘的前部和后部。满足平面化约束，因为只有一部分伺服数据在硬盘上硬图案化，硬图案化伺服数据区符合平坦化约束。伺服模式具有两个对称的伺服写入辅助模式，一个在中央突发模式的每一侧。在完成平坦化处理之后，伺服同步，SAM，轨迹ID，扇区ID和/或RRO值可由磁头写入这些伺服写入辅助模式。伺服模式的对称设计允许从左到右和从右到左的伺服写入和读回，从而使得能够在磁盘制造中使用单个主模板。

10. 发明申请

US20130010383A1 PATTERNED MEDIA WITH AN ALTERNATING SERIES OF CONCENTRIC SERVO ZONES AND OVERLAP ZONES 有权
公开(公告)号：US20130010383A1
公开(公告)日：2013-01-10
申请号：US13177435
申请日：2011-07-06
申请人： Keiichiro Nonaka , Kei Yasuna , Masahito Kobayashi
发明人： Keiichiro Nonaka , Kei Yasuna , Masahito Kobayashi
IPC分类号： G11B5/09
CPC分类号： G11B5/59616 , G11B5/59688 , G11B5/746 , G11B20/1258 , G11B2020/1267 , G11B2020/1281 , G11B2020/1287 , G11B2220/2516
摘要： Embodiments described herein provide for patterned media concentric zones with an alternating series of concentric servo zones and overlap zones. The overlap zones facilitate the writing of servo data between servo zones of different servo frequency. The overlap zones may be dual frequency zones. The dual frequency zones have a first set of overlap patterns with the substantially identical pattern as the bordering lower frequency servo zone and a second set of overlap patterns with the substantially identical pattern as the bordering higher frequency servo zone. A bootstrap zone can be included near the inner diameter to assist initial servo writing. Alternatively the overlap zones are bootstrap zones. Such bootstrap zones have both bootstrap patterns and overlap patterns, the overlap patterns have the substantially identical pattern as a bordering servo zone. Bootstrap patterns only require DC magnetization for servo operability.

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