公开(公告)号：US07564641B2

公开(公告)日：2009-07-21

申请号：US11590725

申请日：2006-10-31

申请人： Mitsuo Kamimura ,  Fumiya Kudo ,  Yukio Abe ,  Atsushi Suzuki ,  Takeshi Hara

发明人： Mitsuo Kamimura ,  Fumiya Kudo ,  Yukio Abe ,  Atsushi Suzuki ,  Takeshi Hara

IPC分类号： G11B21/02 ,  G11B5/596

CPC分类号： G11B19/20

摘要： When a head is subjected to external vibration while a controller is controlling the head according to a positioning-oriented controller characteristic, the positioning-oriented controller characteristic are changed to a vibration-reducing controller characteristic. Moreover, when the external vibration stop while the controller is controlling the head according to the vibration-reducing controller characteristic, the vibration-reducing controller characteristic are changed to the positioning-oriented controller characteristic.

摘要翻译： 当控制器根据定位导向控制器特性来控制头部时头受到外部振动时，将定位控制器特性改变为减振控制器特性。 此外，当控制器根据减振控制器特性控制头时外部振动停止时，减振控制器特性被改变为面向定位控制器的特性。

公开(公告)号：US20070291399A1

公开(公告)日：2007-12-20

申请号：US11590725

申请日：2006-10-31

申请人： Mitsuo Kamimura ,  Fumiya Kudo ,  Yukio Abe ,  Atsushi Suzuki ,  Takeshi Hara

发明人： Mitsuo Kamimura ,  Fumiya Kudo ,  Yukio Abe ,  Atsushi Suzuki ,  Takeshi Hara

IPC分类号： G11B21/02

CPC分类号： G11B19/20

摘要： When a head is subjected to external vibration while a controller is controlling the head according to a positioning-oriented controller characteristic, the positioning-oriented controller characteristic are changed to a vibration-reducing controller characteristic. Moreover, when the external vibration stop while the controller is controlling the head according to the vibration-reducing controller characteristic, the vibration-reducing controller characteristic are changed to the positioning-oriented controller characteristic.

摘要翻译： 当控制器根据定位导向控制器特性来控制头部时头受到外部振动时，将定位控制器特性改变为减振控制器特性。 此外，当控制器根据减振控制器特性控制头时外部振动停止时，减振控制器特性被改变为面向定位控制器的特性。

公开(公告)号：US06798604B1

公开(公告)日：2004-09-28

申请号：US09696833

申请日：2000-10-26

申请人： Mitsuo Kamimura ,  Yoshinari Higashino ,  Kiyoshi Sakuma ,  Yukio Abe ,  Kunihiro Shimada ,  Atsushi Suzuki ,  Takeshi Hara ,  Kentaroh Katoh

发明人： Mitsuo Kamimura ,  Yoshinari Higashino ,  Kiyoshi Sakuma ,  Yukio Abe ,  Kunihiro Shimada ,  Atsushi Suzuki ,  Takeshi Hara ,  Kentaroh Katoh

IPC分类号： G11B2102

CPC分类号： G11B21/083 ,  G11B5/5547 ,  G11B5/5582

摘要： The controller circuit is designed to generate the positioning control signal based on the positional deviation of the head from a target recording track on a recording medium. A feedback control is effected to position the head right on a trajectory corresponding to the target recording track based on the generated positioning control signal. The positioning control signal is subjected to filtering at a notch filter. The cutoff frequency of the notch filter is set depending on the temperature detected at a thermal sensor. Even when the resonant frequency shifts in response to variation in temperature, the cutoff frequency of the notch filter follows the shift of the resonant frequency. A narrower bandwidth of the cutoff frequency still achieves reduction in the amplitude of the frequency component corresponding to the resonant frequency. The resonance or continuous vibration can reliably be prevented in the head. A rapid response can be accomplished in positioning the head right on a trajectory corresponding to the target recording track because of a narrower bandwidth of the cutoff frequency.

摘要翻译： 控制器电路被设计成基于头与记录介质上的目标记录轨迹的位置偏差来产生定位控制信号。 基于产生的定位控制信号，进行反馈控制以将头部位于与目标记录轨道相对应的轨迹上。 定位控制信号在陷波滤波器处进行滤波。 陷波滤波器的截止频率根据热传感器检测到的温度而设定。 即使当谐振频率随温度变化而变化时，陷波滤波器的截止频率跟随谐振频率的移动。 截止频率的较窄带宽仍然实现了对应于谐振频率的频率分量的振幅的降低。 可以可靠地防止头部中的共振或连续振动。 由于截止频率的带宽较窄，所以可以在将头部对准目标记录轨道的轨迹上进行快速响应。

公开(公告)号：US07102843B2

公开(公告)日：2006-09-05

申请号：US10694535

申请日：2003-10-27

申请人： Takeshi Hara ,  Mitsuo Kamimura ,  Yukio Abe ,  Yoshinari Higashino ,  Kunihiro Shimada ,  Kiyoshi Sakuma ,  Atsushi Suzuki ,  Kentaroh Katoh

发明人： Takeshi Hara ,  Mitsuo Kamimura ,  Yukio Abe ,  Yoshinari Higashino ,  Kunihiro Shimada ,  Kiyoshi Sakuma ,  Atsushi Suzuki ,  Kentaroh Katoh

IPC分类号： G11B21/02

CPC分类号： G11B5/5521 ,  G11B5/59605 ,  G11B5/59627 ,  G11B5/59633

摘要： A magnetic disk apparatus includes a magnetic disk with normal and double servo sectors arranged alternately. If a servo interruption period corresponding to adjacent first servo sectors is a first servo interruption period, then a second servo interruption period that is a servo interruption period corresponding to adjacent first servo sector and second servo sector is equal to or less than half of the first servo interruption period.

摘要翻译： 磁盘装置包括具有交替布置的正常和双重伺服扇区的磁盘。 如果对应于相邻的第一伺服扇区的伺服中断周期为第一伺服中断周期，则作为与相邻的第一伺服扇区和第二伺服扇区对应的伺服中断周期的第二伺服中断周期等于或小于第一伺服扇区 伺服中断周期。

公开(公告)号：US20090059415A1

公开(公告)日：2009-03-05

申请号：US12121101

申请日：2008-05-15

申请人： Takeshi Hara ,  Yoshifumi Obara ,  Yukio Abe ,  Shigenori Yanagi ,  Mitsuo Kamimura

发明人： Takeshi Hara ,  Yoshifumi Obara ,  Yukio Abe ,  Shigenori Yanagi ,  Mitsuo Kamimura

IPC分类号： G11B21/02

CPC分类号： G11B5/59633 ,  G11B5/59688

摘要： A storage device receives and holds a storage medium that is subjected to first servo writing processing for writing servo information, a Gray code of which is offset, from an inner cylinder or an outer cylinder to a predetermined cylinder and, after the first servo writing processing, subjected to second servo writing processing for writing servo information from an opposite direction to the predetermined cylinder and in which Gray codes are written to be offset not to overlap in the first or second servo writing processing and the pieces of servo information having different mark patterns are written in the first servo writing processing and the second servo writing processing. The storage device acquires cylinder information and mark patterns from the servo information written in the held storage medium and controls a position of a head based on the acquired cylinder information and mark patterns.

摘要翻译： 存储装置接收并保持经历了第一伺服写入处理的存储介质，用于将格雷码从内圆筒或外圆筒写入预定圆柱体，并且在第一伺服写入处理之后 经过第二伺服写入处理，用于将伺服信息从与预定气缸相反的方向写入，并且其中格雷码被写入以在第一或第二伺服写入处理中不重叠，并且具有不同标记图案的伺服信息 写入第一伺服写入处理和第二伺服写入处理。 存储装置从记录在保持的存储介质中的伺服信息中取得圆筒信息和标记图案，并根据获取的圆筒信息和标记图案来控制头部的位置。

公开(公告)号：US07430092B2

公开(公告)日：2008-09-30

申请号：US11700384

申请日：2007-01-31

申请人： Yukio Abe ,  Takeshi Hara ,  Mitsuo Kamimura ,  Shunji Saitoh

发明人： Yukio Abe ,  Takeshi Hara ,  Mitsuo Kamimura ,  Shunji Saitoh

IPC分类号： G11B5/596

CPC分类号： G11B19/045 ,  G11B5/59627

摘要： Offtrack amounts corresponding to every servo in which data writing has been completed is stored in a storage unit. Offtrack amount corresponding to a next servo frame, which is a servo frame present next to a servo frame for which data has been written, is calculated from the offtrack amounts stored in the storage unit. Based on the offtrack amount of the next servo frame, it is decided whether data needs to be rewritten in a sector present before the next servo frame.

摘要翻译： 与已完成数据写入的每个伺服对应的偏移量存储在存储单元中。 从存储在存储单元中的计数量计算与作为其写入数据的伺服帧相邻的伺服帧的下一伺服帧对应的偏移量。 基于下一个伺服帧的跟踪量，确定在下一个伺服帧之前存在的扇区中是否需要重写数据。

公开(公告)号：US07656599B2

公开(公告)日：2010-02-02

申请号：US11700491

申请日：2007-01-31

申请人： Yukio Abe ,  Takeshi Hara ,  Mitsuo Kamimura ,  Shunji Saitoh

发明人： Yukio Abe ,  Takeshi Hara ,  Mitsuo Kamimura ,  Shunji Saitoh

IPC分类号： G11B27/36

CPC分类号： G11B19/041 ,  G11B20/1217 ,  G11B20/1879 ,  G11B2020/1232 ,  G11B2020/1281 ,  G11B2020/183 ,  G11B2220/2516

摘要： A rewrite determining unit of a hard disk apparatus acquires a servo signal that includes an offtrack amount corresponding to each servo frame from a position information memory, and determines whether a write fault has occurred based on the servo signal. If a write fault has occurred, the rewrite determining unit determines a rewrite sector count, and a write controller controls a hard disk controller so that rewriting is performed to correspond to the rewrite sector count determined by the rewrite determining unit.

摘要翻译： 硬盘装置的重写确定单元从位置信息存储器获取包括与每个伺服帧相对应的跋涉量的伺服信号，并且基于伺服信号来确定是否发生写入故障。 如果发生写入故障，则重写确定单元确定重写扇区计数，并且写入控制器控制硬盘控制器，使得执行重写以对应于由重写确定单元确定的重写扇区计数。

公开(公告)号：US07706094B2

公开(公告)日：2010-04-27

申请号：US12121101

申请日：2008-05-15

申请人： Takeshi Hara ,  Yoshifumi Obara ,  Yukio Abe ,  Shigenori Yanagi ,  Mitsuo Kamimura

发明人： Takeshi Hara ,  Yoshifumi Obara ,  Yukio Abe ,  Shigenori Yanagi ,  Mitsuo Kamimura

IPC分类号： G11B21/02 ,  G11B5/596 ,  G11B20/20 ,  G11B5/09

CPC分类号： G11B5/59633 ,  G11B5/59688

摘要： A storage device receives and holds a storage medium that is subjected to first servo writing processing for writing servo information, a Gray code of which is offset, from an inner cylinder or an outer cylinder to a predetermined cylinder and, after the first servo writing processing, subjected to second servo writing processing for writing servo information from an opposite direction to the predetermined cylinder and in which Gray codes are written to be offset not to overlap in the first or second servo writing processing and the pieces of servo information having different mark patterns are written in the first servo writing processing and the second servo writing processing. The storage device acquires cylinder information and mark patterns from the servo information written in the held storage medium and controls a position of a head based on the acquired cylinder information and mark patterns.

摘要翻译： 存储装置接收并保持经历了第一伺服写入处理的存储介质，用于将格雷码从内圆筒或外圆筒写入预定圆柱体，并且在第一伺服写入处理之后 经过第二伺服写入处理，用于将伺服信息从与预定气缸相反的方向写入，并且其中格雷码被写入以在第一或第二伺服写入处理中不重叠，并且具有不同标记图案的伺服信息 写入第一伺服写入处理和第二伺服写入处理。 存储装置从记录在保持的存储介质中的伺服信息中取得圆筒信息和标记图案，并根据获取的圆筒信息和标记图案来控制头部的位置。

公开(公告)号：US20080055767A1

公开(公告)日：2008-03-06

申请号：US11700384

申请日：2007-01-31

申请人： Yukio Abe ,  Takeshi Hara ,  Mitsuo Kamimura ,  Shunji Saitoh

发明人： Yukio Abe ,  Takeshi Hara ,  Mitsuo Kamimura ,  Shunji Saitoh

IPC分类号： G11B5/596

CPC分类号： G11B19/045 ,  G11B5/59627

摘要： Offtrack amounts corresponding to every servo in which data writing has been completed is stored in a storage unit. Offtrack amount corresponding to a next servo frame, which is a servo frame present next to a servo frame for which data has been written, is calculated from the offtrack amounts stored in the storage unit. Based on the offtrack amount of the next servo frame, it is decided whether data needs to be rewritten in a sector present before the next servo frame.

公开(公告)号：US20080055765A1

公开(公告)日：2008-03-06

申请号：US11700491

申请日：2007-01-31

申请人： Yukio Abe ,  Takeshi Hara ,  Mitsuo Kamimura ,  Shunji Saitoh

发明人： Yukio Abe ,  Takeshi Hara ,  Mitsuo Kamimura ,  Shunji Saitoh

IPC分类号： G11B21/02 ,  G11B19/02

CPC分类号： G11B19/041 ,  G11B20/1217 ,  G11B20/1879 ,  G11B2020/1232 ,  G11B2020/1281 ,  G11B2020/183 ,  G11B2220/2516

摘要： A rewrite determining unit of a hard disk apparatus acquires a servo signal that includes an offtrack amount corresponding to each servo frame from a position information memory, and determines whether a write fault has occurred based on the servo signal. If a write fault has occurred, the rewrite determining unit determines a rewrite sector count, and a write controller controls a hard disk controller so that rewriting is performed to correspond to the rewrite sector count determined by the rewrite determining unit.

摘要翻译： 硬盘装置的重写确定单元从位置信息存储器获取包括与每个伺服帧相对应的跋涉量的伺服信号，并且基于伺服信号来确定是否发生写入故障。 如果发生写入故障，则重写确定单元确定重写扇区计数，并且写入控制器控制硬盘控制器，使得执行重写以对应于由重写确定单元确定的重写扇区计数。