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1. 发明授权

US5404255A Disk apparatus and its control method 失效
标题翻译：磁盘设备及其控制方法
公开(公告)号：US5404255A
公开(公告)日：1995-04-04
申请号：US9089
申请日：1993-01-26
申请人： Masahito Kobayashi , Takashi Yamaguchi , Hiromu Hirai , Hideaki Amano , Katsuhiro Tsuneta
发明人： Masahito Kobayashi , Takashi Yamaguchi , Hiromu Hirai , Hideaki Amano , Katsuhiro Tsuneta
IPC分类号： G05B13/02 , G05D3/12 , G11B5/55 , G11B21/10 , G11B5/596
CPC分类号： G11B5/5534 , G11B5/5565
摘要： A disk apparatus has a gain identifying apparatus for identifying a gain from a control signal for controlling each head to a detection position signal, a memory device to store the identified gain, and an apparatus for correcting the control signal on the basis of the gain at at time point when each head which is provided for each recording surface of disks is located at each of a plurality of track positions.
摘要翻译：磁盘装置具有增益识别装置，用于从用于将每个磁头控制为检测位置信号的控制信号识别增益;存储装置，用于存储所识别的增益;以及装置，用于基于所述增益来校正控制信号在每个磁盘记录表面上设置的每个磁头位于多个磁道位置中的每一个的时间点。

2. 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。

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

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。

5. 发明授权

US5936792A Positioning adaptive control method and positioning device as well as information storage device 失效
标题翻译：定位自适应控制方法和定位装置以及信息存储装置
公开(公告)号：US5936792A
公开(公告)日：1999-08-10
申请号：US677546
申请日：1996-07-18
申请人： Masahito Kobayashi , Takashi Yoshida , Takashi Yamaguchi
发明人： Masahito Kobayashi , Takashi Yoshida , Takashi Yamaguchi
IPC分类号： G05B13/02 , G05D3/12 , G11B7/085 , G11B21/08 , G11B5/598
CPC分类号： G11B21/085 , G05B13/024 , G11B7/08535
摘要： A positioning adaptive control method and positioning device which allow rapid positioning of a head by speed-controlling a seek operation in an information storage device such as a magnetic disk unit. The seek operation moves the head to a vicinity of a target track and a following operation causes the head to accurately follow a position on the target track when the head is positioned in the vicinity of the target track. These operations are controlled based on data recorded in sectors formed on a recording plane of a disk. A variable gain of an acceleration feed forward signal is controlled sequentially by an adaptive control rule so that a deviation signal between a target speed and an actual speed of the head is reduced when the speed of the head is shifted from an acceleration or constant speed state to a deceleration state under speed control. The variable gain of the acceleration feed forward is used per each sampling for the adaptive control rule and a square value of the speed deviation signal is minimized.
摘要翻译：一种定位自适应控制方法和定位装置，其允许通过在诸如磁盘单元的信息存储装置中对搜索操作进行速度控制来快速定位头部。寻道操作将磁头移动到目标轨道附近，并且当头部位于目标轨道附近时，随后的操作使头部精确地跟随目标轨道上的位置。这些操作基于记录在形成在盘的记录平面上的扇区中的数据来控制。通过自适应控制规则顺序地控制加速度前馈信号的可变增益，使得当头的速度从加速度或恒定速度状态偏移时，目标速度和头部的实际速度之间的偏差信号减小到速度控制下的减速状态。对于自适应控制规则，每个采样使用加速度前馈的可变增益，并且将速度偏差信号的平方值最小化。

6. 发明授权

US06483659B1 Disk drives 失效
标题翻译：磁盘驱动器
公开(公告)号：US06483659B1
公开(公告)日：2002-11-19
申请号：US09421943
申请日：1999-10-21
申请人： Masahito Kobayashi , Takashi Yamaguchi , Kenichi Iimura , Irizo Naniwa
发明人： Masahito Kobayashi , Takashi Yamaguchi , Kenichi Iimura , Irizo Naniwa
IPC分类号： G11B5596
CPC分类号： G11B5/6005
摘要： A disk drive capable of controlling two or more high-response small-stroke precise-movement actuators and a low-response large-stroke rough-movement actuator to be operated in cooperation with each other so that two or more heads can be fast and precisely positioned at a time by those actuators. The disk drive includes a rough-movement actuator having a stroke enough to cover all disk, a first precise-movement actuator having a small stroke, and a second precise-movement actuator having a small stroke, wherein a head is positioned at a track on a disk surface by the first precise-movement actuator, at the same time a head is positioned at a track on a second disk surface by the second precise-movement actuator, and the rough-movement actuator is operated to follow and to be brought to a center position between the located heads.
摘要翻译：一种能够控制两个或更多个高响应小行程精确运动致动器的磁盘驱动器和一个低响应的大行程粗略运动致动器，以彼此协作运行，使得两个或更多个头可以快速和精确地这些执行器一次定位。盘驱动器包括具有足以覆盖所有盘的行程的粗略运动致动器，具有小行程的第一精确运动致动器和具有小行程的第二精确运动致动器，其中头部位于轨道上通过第一精确运动致动器的盘表面，同时头部通过第二精确运动致动器定位在第二盘表面上的轨道处，并且粗略运动致动器被操作以跟随并被带到位于头部之间的中心位置。

7. 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.

8. 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。

9. 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.

10. 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。

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