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1. 发明授权

US08315008B2 Magnetic disk device and head position control method 有权
标题翻译：磁盘装置和磁头位置控制方法
公开(公告)号：US08315008B2
公开(公告)日：2012-11-20
申请号：US13028775
申请日：2011-02-16
申请人： Atsushi Suzuki , Masafumi Iwashiro , Masahide Yatsu
发明人： Atsushi Suzuki , Masafumi Iwashiro , Masahide Yatsu
IPC分类号： G11B5/596 , G11B19/04
CPC分类号： G11B5/5582
摘要： According to one embodiment, a magnetic disk device includes a magnetic disk, a magnetic head, a position error signal output module, a vibration pattern detector, an adder, and a head positioning controller. The magnetic head moves over the magnetic disk. The position error signal output module outputs a position error signal based on a difference between a head position of the magnetic head over the magnetic disk and a target position on the magnetic disk. The vibration pattern detector detects a vibration pattern of the magnetic head caused by vibration. The adder adds the position error signal to an offset signal indicating amplitude of the vibration pattern. The head positioning controller moves the head position to the target position based on a result of addition by the adder.
摘要翻译：根据一个实施例，磁盘装置包括磁盘，磁头，位置误差信号输出模块，振动模式检测器，加法器和磁头定位控制器。磁头在磁盘上移动。位置误差信号输出模块基于磁头的头部位置与磁盘上的目标位置之间的差异输出位置误差信号。振动模式检测器检测由振动引起的磁头的振动模式。加法器将位置误差信号加到表示振动模式振幅的偏移信号上。头部定位控制器基于加法器的相加结果将头部位置移动到目标位置。

2. 发明申请

US20080002279A1 Method and apparatus for writing a spiral servo pattern on a disk in a disk drive 审中-公开
标题翻译：用于在盘驱动器中的盘上写入螺旋伺服图案的方法和装置
公开(公告)号：US20080002279A1
公开(公告)日：2008-01-03
申请号：US11819909
申请日：2007-06-29
申请人： Shinichirou Kouhara , Masahide Yatsu , Masafumi Iwashiro , Hideo Sado , Katsuki Ueda , Seiji Mizukoshi , Shouji Nakajima
发明人： Shinichirou Kouhara , Masahide Yatsu , Masafumi Iwashiro , Hideo Sado , Katsuki Ueda , Seiji Mizukoshi , Shouji Nakajima
IPC分类号： G11B21/02
CPC分类号： G11B5/59633 , G11B5/59638 , G11B5/59661 , G11B5/59666
摘要： According to one embodiment, a self-servo writing method for use in disk drives, which has a first process and a second process. In the first process, a base-servo pattern containing address codes and servo-burst patterns is recorded on a disk medium in units of one-track pitches. In the second process, a drive-servo pattern, which is a spiral servo pattern, is recorded on the disk medium, by using the base-servo pattern and the self-servo writing function of the disk drive.
摘要翻译：根据一个实施例，一种用于磁盘驱动器的自伺服写入方法，其具有第一处理和第二处理。在第一处理中，包含地址码和伺服突发图案的基本伺服模式以单轨道间隔为单位被记录在盘介质上。在第二过程中，通过使用基本伺服模式和磁盘驱动器的自伺服写入功能，将作为螺旋伺服模式的驱动伺服模式记录在磁盘介质上。

3. 发明申请

US20070097539A1 Method and apparatus for servo control using spiral servo information in a disk drive 有权
标题翻译：用于在磁盘驱动器中使用螺旋伺服信息的伺服控制的方法和装置
公开(公告)号：US20070097539A1
公开(公告)日：2007-05-03
申请号：US11590758
申请日：2006-11-01
申请人： Hideo Sado , Masahide Yatsu , Masafumi Iwashiro , Shouji Nakajima , Seiji Mizukoshi , Shinichiro Kouhara
发明人： Hideo Sado , Masahide Yatsu , Masafumi Iwashiro , Shouji Nakajima , Seiji Mizukoshi , Shinichiro Kouhara
IPC分类号： G11B5/596
CPC分类号： G11B5/59688 , G11B5/59633 , G11B5/59638 , G11B5/59661
摘要： According to one embodiment, in a disk drive using a disk medium storing spiral servo information, a CPU generates virtual servo information having assumed virtual track centers corresponding to centers of concentric data tracks. The CPU performs control to position a head to the center of the concentric data track by using the virtual servo information.
摘要翻译：根据一个实施例，在使用存储螺旋伺服信息的磁盘介质的磁盘驱动器中，CPU生成具有与同心数据磁道的中心相对应的具有虚拟磁道中心的虚拟伺服信息。 CPU执行控制以通过使用虚拟伺服信息将磁头定位在同心数据磁道的中心。

4. 发明申请

US20070047132A1 Method and apparatus for writing servo information 审中-公开
标题翻译：用于写入伺服信息的方法和装置
公开(公告)号：US20070047132A1
公开(公告)日：2007-03-01
申请号：US11447981
申请日：2006-06-07
申请人： Hideo Sado , Masahide Yatsu , Masafumi Iwashiro , Shouji Nakajima , Seiji Mizukoshi , Shinichirou Kouhara
发明人： Hideo Sado , Masahide Yatsu , Masafumi Iwashiro , Shouji Nakajima , Seiji Mizukoshi , Shinichirou Kouhara
IPC分类号： G11B5/58
CPC分类号： G11B5/59655
摘要： According to one embodiment, a servo write method for writing servo information to a disk medium used in a disk drive is disclosed. In the procedure of the servo write method, first servo information is spirally written to a disk medium in a clean room before the disk medium is incorporated into the disk drive, then, the disk medium is incorporated into the disk drive, and second servo information is concentrically written to the disk medium already incorporated in the disk drive.
摘要翻译：根据一个实施例，公开了一种用于将伺服信息写入到用于磁盘驱动器中的磁盘介质的伺服写入方法。在伺服写入方法的过程中，在将磁盘介质并入磁盘驱动器之前，将第一伺服信息螺旋地写入清洁室中的磁盘介质，然后将磁盘介质并入磁盘驱动器中，并且将第二伺服信息同心地写入已经并入磁盘驱动器的磁盘介质。

5. 发明申请

US20060221491A1 Head position calculation method in magnetic disc apparatus 失效
公开(公告)号：US20060221491A1
公开(公告)日：2006-10-05
申请号：US11262896
申请日：2005-11-01
申请人： Shinichirou Kouhara , Masahide Yatsu , Masafumi Iwashiro , Hideo Sado , Seiji Mizukoshi
发明人： Shinichirou Kouhara , Masahide Yatsu , Masafumi Iwashiro , Hideo Sado , Seiji Mizukoshi
IPC分类号： G11B5/596
CPC分类号： G11B5/59655 , G11B5/59688
摘要： When a sub-track having burst data A and D, a sub-track having burst data A and C, a sub-track having burst data B and C, and sub-track having burst data B and D are repeatedly arranged in this order, in accordance with equations 1 and 2, a sub-track t included in a track T determines the value of a constant n within a range of 1.2 (inclusive) to 1.8 (inclusive) so as to obtain linearity between a position in a disc radial direction r and a head position P in a disc radial direction r in the sub-track t. Subsequently, the head position P is calculated using the determined constant n and equations 1 and 2: P=(A−B)*|A−B|(n−1)/(|A−B|n+|C−D|ˆn) (1) P=(C−D)*|C−D|(n−1)/(|A−B|n+|C−D|n) (2)

6. 发明申请

US20090316294A1 HEAD POSITIONING CONTROL METHOD, MAGNETIC DISK APPARATUS AND FEEDBACK CONTROL METHOD 审中-公开
标题翻译：头部定位控制方法，磁盘设备和反馈控制方法
公开(公告)号：US20090316294A1
公开(公告)日：2009-12-24
申请号：US12551233
申请日：2009-08-31
申请人： Masafumi IWASHIRO
发明人： Masafumi IWASHIRO
IPC分类号： G11B21/02
CPC分类号： G11B5/5526
摘要： According to one embodiment, a head positioning control method comprises suppressing a first frequency component and increasing a second frequency component of a control signal for moving a head to a desired position over a magnetic disk, and moving the head to the desired position over the magnetic disk by an actuator based on the control signal.
摘要翻译：根据一个实施例，头部定位控制方法包括：抑制第一频率分量并增加控制信号的第二频率分量，用于将磁头移动到磁盘上的期望位置，以及将磁头移动到磁性的所需位置基于控制信号的致动器盘。

7. 发明申请

US20060109583A1 Method and apparatus for servo writing with servo pattern examination in a disk drive 审中-公开
标题翻译：用于在磁盘驱动器中进行伺服模式检测的伺服写入的方法和装置
公开(公告)号：US20060109583A1
公开(公告)日：2006-05-25
申请号：US11253643
申请日：2005-10-20
申请人： Hideo Sado , Masahide Yatsu , Masafumi Iwashiro
发明人： Hideo Sado , Masahide Yatsu , Masafumi Iwashiro
IPC分类号： G11B21/02 , G11B27/36
CPC分类号： G11B5/59633 , G11B5/59638
摘要： There is disclosed a servo information writing apparatus comprising a disk drive and an examination unit. The examination unit executes examination to select an adequate servo pattern as servo information from a plurality of types of servo patterns recorded beforehand in a disk medium incorporated in the disk drive. The selection unit executes an examination to select the adequate servo pattern by use of a control and signal processing system incorporated in the disk drive.
摘要翻译：公开了一种包括磁盘驱动器和检查单元的伺服信息写入装置。检查单元执行检查以从预先记录在包含在盘驱动器中的盘介质中的多种类型的伺服模式中选择足够的伺服模式作为伺服信息。选择单元通过使用包含在盘驱动器中的控制和信号处理系统执行检查以选择适当的伺服模式。

8. 发明申请

US20110310506A1 MAGNETIC DISK DEVICE AND HEAD POSITION CONTROL METHOD 有权
标题翻译：磁盘设备和头位置控制方法
公开(公告)号：US20110310506A1
公开(公告)日：2011-12-22
申请号：US13028775
申请日：2011-02-16
申请人： Atsushi SUZUKI , Masafumi Iwashiro , Masahide Yatsu
发明人： Atsushi SUZUKI , Masafumi Iwashiro , Masahide Yatsu
IPC分类号： G11B5/596
CPC分类号： G11B5/5582
摘要： According to one embodiment, a magnetic disk device includes a magnetic disk, a magnetic head, a position error signal output module, a vibration pattern detector, an adder, and a head positioning controller. The magnetic head moves over the magnetic disk. The position error signal output module outputs a position error signal based on a difference between a head position of the magnetic head over the magnetic disk and a target position on the magnetic disk. The vibration pattern detector detects a vibration pattern of the magnetic head caused by vibration. The adder adds the position error signal to an offset signal indicating amplitude of the vibration pattern. The head positioning controller moves the head position to the target position based on a result of addition by the adder.
摘要翻译：根据一个实施例，磁盘装置包括磁盘，磁头，位置误差信号输出模块，振动模式检测器，加法器和磁头定位控制器。磁头在磁盘上移动。位置误差信号输出模块基于磁头的头部位置与磁盘上的目标位置之间的差异输出位置误差信号。振动模式检测器检测由振动引起的磁头的振动模式。加法器将位置误差信号加到表示振动模式振幅的偏移信号上。头部定位控制器基于加法器的相加结果将头部位置移动到目标位置。

9. 发明授权

US07221533B2 Method and apparatus for servo information writing in a disk drive 失效
标题翻译：伺服信息写入磁盘驱动器的方法和装置
公开(公告)号：US07221533B2
公开(公告)日：2007-05-22
申请号：US11262716
申请日：2005-11-01
申请人： Masafumi Iwashiro , Masahide Yatsu , Hideo Sado
发明人： Masafumi Iwashiro , Masahide Yatsu , Hideo Sado
IPC分类号： G11B21/02 , G11B5/596
CPC分类号： G11B5/59627 , G11B5/59633
摘要： A method of writing servo information for use in head positioning control on a disk medium incorporated in a disk drive, including executing the head positioning control based on original servo information recorded on the disk medium, producing positioning correction information to correct a positioning error, and recording the positioning correction information in a correction information recording buffer.
摘要翻译：一种写入用于磁盘定位控制的伺服信息的方法，包括：根据记录在磁盘介质上的原始伺服信息执行磁头定位控制，产生定位校正信息以校正定位误差;以及在校正信息记录缓冲器中记录定位校正信息。

10. 发明授权

US06680812B1 Head positioning control system using sampled data control system for disk drive 失效
标题翻译：磁头定位控制系统采用磁盘驱动采样数据控制系统
公开(公告)号：US06680812B1
公开(公告)日：2004-01-20
申请号：US09661467
申请日：2000-09-13
申请人： Masafumi Iwashiro
发明人： Masafumi Iwashiro
IPC分类号： G11B5596
CPC分类号： G11B5/59605 , G11B5/5521
摘要： A high-performance head positioning control system composed of a suitable combination of a multi-rate control system and a single-rate control system has been disclosed. An SM judging unit selects the multi-rate control system in a seek operation in which the head is moved to the desired track on the disk. When the head has come close to the desired track and changes from seek control to track following control, the SM judging unit switches from the multi-rate control system to the single-rate control system. The single-rate control system performs track following control whereby the head is positioned in the range of the desired track.
摘要翻译：已经公开了由多速率控制系统和单速率控制系统的适当组合组成的高性能头部定位控制系统。 SM判断单元在磁头移动到磁盘上的期望磁道的寻道操作中选择多速率控制系统。当磁头已经接近所需的轨道并且从寻道控制变为追踪跟随控制时，SM判断单元从多速率控制系统切换到单速率控制系统。单速率控制系统执行跟踪跟踪控制，由此头位于期望轨道的范围内。

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