公开(公告)号：US07675701B2

公开(公告)日：2010-03-09

申请号：US11600593

申请日：2006-11-15

申请人： Hideki Ohzeki ,  Noboru Yoshida ,  Kazuyuki Ishibashi ,  Tetsuo Ueda ,  Isao Yoneda ,  Toshiaki Wada

发明人： Hideki Ohzeki ,  Noboru Yoshida ,  Kazuyuki Ishibashi ,  Tetsuo Ueda ,  Isao Yoneda ,  Toshiaki Wada

IPC分类号： G11B5/09

CPC分类号： G11B5/59688

摘要： Detection capability of a servo timing mark (STM) is improved. Long STM is configured by pseudo-STM forming part of an AGC/PLL pattern and intrinsic STM. When a system can not recognize the intrinsic STM, it keeps a state that a sector detection window is opened, and is operated in a long STM detection mode to recognize the long STM, thereby generates an STM detection signal. After the STM detection signal has been generated, an STM detection window is closed, and the system is operated in an intrinsic STM detection mode. Since the long STM has longer bit length than the intrinsic STM, it has high discriminating power with respect to other bit patterns. Therefore, even if the sector detection window is remained to be in an opened state, bit strings of data sector, address information in a servo sector or the like is not falsely recognized.

摘要翻译： 提高伺服定时标志（STM）的检测能力。 长STM由构成AGC / PLL模式和固有STM的一部分的伪STM构成。 当系统不能识别本征STM时，它保持扇区检测窗口打开的状态，并且以长STM检测模式操作以识别长STM，从而生成STM检测信号。 在产生STM检测信号之后，关闭STM检测窗口，并以本征STM检测模式操作系统。 由于长的STM具有比固有的STM更长的位长度，所以它对于其他位模式具有很高的识别能力。 因此，即使扇区检测窗口保持为打开状态，也不会错误地识别数据扇区的位串，伺服扇区中的地址信息等。

公开(公告)号：US20070146919A1

公开(公告)日：2007-06-28

申请号：US11600593

申请日：2006-11-15

申请人： Hideki Ohzeki ,  Noboru Yoshida ,  Kazuyuki Ishibashi ,  Tetsuo Ueda ,  Isao Yoneda ,  Toshiaki Wada

发明人： Hideki Ohzeki ,  Noboru Yoshida ,  Kazuyuki Ishibashi ,  Tetsuo Ueda ,  Isao Yoneda ,  Toshiaki Wada

IPC分类号： G11B5/09 ,  G11B20/10

CPC分类号： G11B5/59688

摘要： Detection capability of a servo timing mark (STM) is improved. Long STM is configured by pseudo-STM forming part of an AGC/PLL pattern and intrinsic STM. When a system can not recognize the intrinsic STM, it keeps a state that a sector detection window is opened, and is operated in a long STM detection mode to recognize the long STM, thereby generates an STM detection signal. After the STM detection signal has been generated, an STM detection window is closed, and the system is operated in an intrinsic STM detection mode. Since the long STM has longer bit length than the intrinsic STM, it has high discriminating power with respect to other bit patterns. Therefore, even if the sector detection window is remained to be in an opened state, bit strings of data sector, address information in a servo sector or the like is not falsely recognized.

摘要翻译： 提高伺服定时标志（STM）的检测能力。 长STM由构成AGC / PLL模式和固有STM的一部分的伪STM构成。 当系统不能识别本征STM时，它保持扇区检测窗口打开的状态，并且以长STM检测模式操作以识别长STM，从而生成STM检测信号。 在产生STM检测信号之后，关闭STM检测窗口，并以本征STM检测模式操作系统。 由于长的STM具有比固有的STM更长的位长度，所以它对于其他位模式具有很高的识别能力。 因此，即使扇区检测窗口保持为打开状态，也不会错误地识别数据扇区的位串，伺服扇区中的地址信息等。

公开(公告)号：US07595955B2

公开(公告)日：2009-09-29

申请号：US12069311

申请日：2008-02-07

申请人： Mirei Hosono ,  Kazunari Tsuchimoto ,  Hideki Ohzeki ,  Tetsuo Ueda ,  Isao Yoneda ,  Kazuyuki Ishibashi ,  Hiroshi Uchida

发明人： Mirei Hosono ,  Kazunari Tsuchimoto ,  Hideki Ohzeki ,  Tetsuo Ueda ,  Isao Yoneda ,  Kazuyuki Ishibashi ,  Hiroshi Uchida

IPC分类号： G11B5/596 ,  G11B20/20

CPC分类号： G11B5/59688 ,  G11B5/59627

摘要： Embodiments of the present invention help to achieve a read error recovery, and suppress decreases in the capacity of the disk drive device and degradation in performance. In one embodiment, a hard disk drive (HDD) performs following control without use of repeatable run-out (RRO) compensation information on a magnetic disk in a normal reading process. When an error occurs in a normal reading process, the HDD moves a read element to a position different from a target position of the normal reading process. At the position where the read element has been moved, the read element reads out the RRO compensation information. In a recovery procedure for the reading process where the error has occurred, the HDD performs following control with compensation by the servo compensation information read out by the read element.

摘要翻译： 本发明的实施例有助于实现读错误恢复，并且抑制磁盘驱动装置的容量的降低和性能的降低。 在一个实施例中，硬盘驱动器（HDD）在正常读取过程中不使用磁盘上的可重复的耗尽（RRO）补偿信息执行以下控制。 当在正常读取过程中发生错误时，HDD将读取元件移动到与正常读取处理的目标位置不同的位置。 在读取元素移动的位置，读取元件读出RRO补偿信息。 在发生错误的读取处理的恢复过程中，HDD通过由读取元素读出的伺服补偿信息进行补偿来执行以下控制。

公开(公告)号：US20080186617A1

公开(公告)日：2008-08-07

申请号：US12069311

申请日：2008-02-07

申请人： Mirei Hosono ,  Kazunari Tsuchimoto ,  Hideki Ohzeki ,  Tetsuo Ueda ,  Isao Yoneda ,  Kazuyuki Ishibashi ,  Hiroshi Uchida

发明人： Mirei Hosono ,  Kazunari Tsuchimoto ,  Hideki Ohzeki ,  Tetsuo Ueda ,  Isao Yoneda ,  Kazuyuki Ishibashi ,  Hiroshi Uchida

IPC分类号： G11B5/596

CPC分类号： G11B5/59688 ,  G11B5/59627

摘要： Embodiments of the present invention help to achieve a read error recovery, and suppress decreases in the capacity of the disk drive device and degradation in performance. In one embodiment, a hard disk drive (HDD) performs following control without use of repeatable run-out (RRO) compensation information on a magnetic disk in a normal reading process. When an error occurs in a normal reading process, the HDD moves a read element to a position different from a target position of the normal reading process. At the position where the read element has been moved, the read element reads out the RRO compensation information. In a recovery procedure for the reading process where the error has occurred, the HDD performs following control with compensation by the servo compensation information read out by the read element.

摘要翻译： 本发明的实施例有助于实现读错误恢复，并且抑制磁盘驱动装置的容量的降低和性能的降低。 在一个实施例中，硬盘驱动器（HDD）在正常读取过程中不使用磁盘上的可重复的耗尽（RRO）补偿信息执行以下控制。 当在正常读取过程中发生错误时，HDD将读取元件移动到与正常读取处理的目标位置不同的位置。 在读取元素移动的位置，读取元件读出RRO补偿信息。 在发生错误的读取处理的恢复过程中，HDD通过由读取元素读出的伺服补偿信息进行补偿来执行以下控制。

公开(公告)号：US07209311B2

公开(公告)日：2007-04-24

申请号：US11063487

申请日：2005-02-22

申请人： Tetsuo Ueda ,  Isao Yoneda ,  Hideki Ohzeki ,  Naoyuki Minami

发明人： Tetsuo Ueda ,  Isao Yoneda ,  Hideki Ohzeki ,  Naoyuki Minami

IPC分类号： G11B5/596

CPC分类号： G11B5/596

摘要： Embodiments of the invention provide control of a disk data storage device to prevent off-track writing. In one embodiment, the SA acquires the CYLIDs and ADC Values generated from the SERVO SIGNALs acquired previously, and generates DACOUT which defines a driving current of the VCM driver. The SA monitors the DACOUT generated and determines whether the DACOUT is within a predefined range. If the DACOUT is outside the predefined range, data writing is inhibited. By monitoring the DACOUT, it is possible for the VCM driver to detect supply of an overcurrent to the VCM driver 210 beforehand, and off-track writing can thus be prevented.

摘要翻译： 本发明的实施例提供了一种磁盘数据存储设备的控制以防止偏离写入。 在一个实施例中，SA获取从先前获得的SERVO信号产生的CYLID和ADC值，并产生定义VCM驱动器的驱动电流的DACOUT。 SA监视生成的DACOUT，并确定DACOUT是否在预定义的范围内。 如果DACOUT超出预定范围，则禁止数据写入。 通过监视DACOUT，VCM驱动器可以预先检测到VCM驱动器210的过电流供应，从而可以防止偏离写入。

公开(公告)号：US20050185320A1

公开(公告)日：2005-08-25

申请号：US11063487

申请日：2005-02-22

申请人： Tetsuo Ueda ,  Isao Yoneda ,  Hideki Ohzeki ,  Naoyuki Minami

发明人： Tetsuo Ueda ,  Isao Yoneda ,  Hideki Ohzeki ,  Naoyuki Minami

IPC分类号： G11B20/10 ,  G11B5/596 ,  G11B21/08

CPC分类号： G11B5/596

摘要： Embodiments of the invention provide control of a disk data storage device to prevent off-track writing. In one embodiment, the SA acquires the CYLIDs and ADC Values generated from the SERVO SIGNALs acquired previously, and generates DACOUT which defines a driving current of the VCM driver. The SA monitors the DACOUT generated and determines whether the DACOUT is within a predefined range. If the DACOUT is outside the predefined range, data writing is inhibited. By monitoring the DACOUT, it is possible for the VCM driver to detect supply of an overcurrent to the VCM driver 210 beforehand, and off-track writing can thus be prevented.

摘要翻译： 本发明的实施例提供了一种磁盘数据存储设备的控制以防止偏离写入。 在一个实施例中，SA获取从先前获得的SERVO信号产生的CYLID和ADC值，并产生定义VCM驱动器的驱动电流的DACOUT。 SA监视生成的DACOUT，并确定DACOUT是否在预定义的范围内。 如果DACOUT超出预定范围，则禁止数据写入。 通过监视DACOUT，VCM驱动器可以预先检测到VCM驱动器210的过电流供应，从而可以防止偏离写入。

公开(公告)号：US06339512B1

公开(公告)日：2002-01-15

申请号：US09276211

申请日：1999-03-25

申请人： S. M. Sri-Jayantha ,  Hien Dang ,  Arun Sharma ,  Kiyoshi Satoh ,  Tetsuo Ueda ,  Hideki Ohzeki ,  Nayouki Kagami ,  Kiochi Takeuchi

发明人： S. M. Sri-Jayantha ,  Hien Dang ,  Arun Sharma ,  Kiyoshi Satoh ,  Tetsuo Ueda ,  Hideki Ohzeki ,  Nayouki Kagami ,  Kiochi Takeuchi

IPC分类号： G11B5596

CPC分类号： G11B5/6005 ,  G11B5/59627 ,  G11B21/21

摘要： A hard disk has a servo loop and a rotating storage medium. The rotating storage medium has one or more significant flutter modes at frequencies below a zero cross frequency of a rejection transfer function of the servo loop. The effect of the forgoing is to allow the servo loop to better track a rotating medium that is subject to significant flutter. Peak filters with frequency bands that substantially overlap frequency bands of the significant flutter modes can also be added to the servo loop to further improve tracking. Multiple narrow band filters with frequency bands overlap can be used to cover the spectrum of a single flutter mode. Two lag-lead filters, the frequency responses of which overlap can be used to cover two adjacent significant flutter modes. At frequencies intermediate to the two adjacent flutter, modes, the lead caused by one filter, will be cancelled by the lag caused by the second.

摘要翻译： 硬盘具有伺服回路和旋转存储介质。 旋转存储介质在低于伺服环路的拒绝传递函数的零交叉频率的频率下具有一个或多个显着颤振模式。 上述的效果是允许伺服回路更好地跟踪受到显着颤动的旋转介质。 具有基本上与重要抖动模式的频带重叠的频带的峰值滤波器也可以被添加到伺服环路中以进一步改善跟踪。 具有频带重叠的多个窄带滤波器可以用于覆盖单个颤振模式的频谱。 两个滞后引线滤波器，其重叠的频率响应可用于覆盖两个相邻的显着颤振模式。 在两个相邻颤振之间的频率中，模式，由一个滤波器引起的引线将被第二个引起的滞后所抵消。

公开(公告)号：US07489470B2

公开(公告)日：2009-02-10

申请号：US11725038

申请日：2007-03-15

申请人： Hiroshi Uchida ,  Mirei Hosono ,  Hideki Ohzeki ,  Tetsuo Ueda

发明人： Hiroshi Uchida ,  Mirei Hosono ,  Hideki Ohzeki ,  Tetsuo Ueda

IPC分类号： G11B5/596

CPC分类号： G11B5/59627

摘要： Embodiments of the present invention provide a magnetic recording apparatus capable of generating RRO compensation information that can expand the disturbance frequency range in which to compensate for RRO. Embodiments of the present invention describe a magnetic recording apparatus that uses a plurality of repetitive control systems to detect repeatable runout during the rotation of a magnetic recording medium for a frequency characteristic of each of the repetitive control systems. The magnetic recording apparatus further generates compensation information to compensate for each of the detected repeatable runout. The magnetic recording apparatus still further writes the compensation information generated for each of the repetitive control systems to a servo signal, thus suppressing and controlling the repeatable runout.

摘要翻译： 本发明的实施例提供一种磁记录装置，其能够产生可以扩大其中补偿RRO的干扰频率范围的RRO补偿信息。 本发明的实施例描述了一种磁记录装置，其使用多个重复控制系统来检测用于每个重复控制系统的频率特性的磁记录介质旋转期间的可重复跳动。 磁记录装置进一步产生补偿信息以补偿每个检测到的可重复跳动。 磁记录装置还将针对每个重复控制系统生成的补偿信息写入伺服信号，从而抑制和控制可重复的跳动。

公开(公告)号：US20070230025A1

公开(公告)日：2007-10-04

申请号：US11725038

申请日：2007-03-15

申请人： Hiroshi Uchida ,  Mirei Hosono ,  Hideki Ohzeki ,  Tetsuo Ueda

发明人： Hiroshi Uchida ,  Mirei Hosono ,  Hideki Ohzeki ,  Tetsuo Ueda

IPC分类号： G11B5/596

CPC分类号： G11B5/59627

摘要： Embodiments of the present invention provide a magnetic recording apparatus capable of generating RRO compensation information that can expand the disturbance frequency range in which to compensate for RRO. Embodiments of the present invention describe a magnetic recording apparatus that uses a plurality of repetitive control systems to detect repeatable runout during the rotation of a magnetic recording medium for a frequency characteristic of each of the repetitive control systems. The magnetic recording apparatus further generates compensation information to compensate for each of the detected repeatable runout. The magnetic recording apparatus still further writes the compensation information generated for each of the repetitive control systems to a servo signal, thus suppressing and controlling the repeatable runout.

摘要翻译： 本发明的实施例提供一种磁记录装置，其能够产生可以扩大其中补偿RRO的干扰频率范围的RRO补偿信息。 本发明的实施例描述了一种磁记录装置，其使用多个重复控制系统来检测用于每个重复控制系统的频率特性的磁记录介质旋转期间的可重复跳动。 磁记录装置进一步产生补偿信息以补偿每个检测到的可重复跳动。 磁记录装置还将针对每个重复控制系统生成的补偿信息写入伺服信号，从而抑制和控制可重复的跳动。

公开(公告)号：US06597530B2

公开(公告)日：2003-07-22

申请号：US09935272

申请日：2001-08-22

申请人： Hideo Asano ,  Kenji Okada ,  Tetsuo Ueda ,  Koichi Arai ,  Hideki Ohzeki

发明人： Hideo Asano ,  Kenji Okada ,  Tetsuo Ueda ,  Koichi Arai ,  Hideki Ohzeki

IPC分类号： G11B5596

CPC分类号： G11B5/5547

摘要： A disk drive seek control system device to reduce track pitch. When data is recorded, an offset value is added to the position of a read head element along the width of a track corresponding to an offset &Dgr;w between the read head element and a write head element. The value of the offset depends on the yaw angle &thgr; of the head. When data is read, the position of the read head element is chosen to be either the position of the write head element during write operations, or the midpoint between the position of the write head element and the read head element during write operations, or the center of a track.