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1. 发明授权

US06947243B2 Method and system for time-shift based rotational vibration sensing in disk drives 失效
公开(公告)号：US06947243B2
公开(公告)日：2005-09-20
申请号：US10153683
申请日：2002-05-24
申请人： Hien Dang , Isao Yoneda , Tetsuo Ueda , Yuzo Nakagawa , Sri M. Sri-Jayantha
发明人： Hien Dang , Isao Yoneda , Tetsuo Ueda , Yuzo Nakagawa , Sri M. Sri-Jayantha
IPC分类号： G11B5/55 , G11B5/596 , G11B25/04
CPC分类号： G11B5/59627 , G11B5/5582 , G11B5/596 , G11B25/043
摘要： A method (and structure) senses a rotational vibration of a disk drive. The disk drive includes a rotating disk. The disk includes a plurality of reference bits across a surface thereof. The method (and structure) includes detecting the reference bits across a pattern on the rotating disk, and analyzing a time interval between adjacent ones of the reference bits.

2. 发明授权

US07724457B2 Method and system for time-shift based rotational vibration sensing in disk drives 有权
标题翻译：在磁盘驱动器中基于时移的旋转振动感测的方法和系统
公开(公告)号：US07724457B2
公开(公告)日：2010-05-25
申请号：US11201673
申请日：2005-08-10
申请人： Hien Dang , Isao Yoneda , Tetsuo Ueda , Yuzo Nakagawa , Sri M. Sri-Jayantha
发明人： Hien Dang , Isao Yoneda , Tetsuo Ueda , Yuzo Nakagawa , Sri M. Sri-Jayantha
IPC分类号： G11B5/09
CPC分类号： G11B5/59627 , G11B5/5582 , G11B5/596 , G11B25/043
摘要： A method (and structure) senses a rotational vibration of a disk drive. The disk drive includes a rotating disk. The disk includes a plurality of reference bits across a surface thereof. The method (and structure) includes detecting the reference bits across a pattern on the rotating disk, and analyzing a time interval between adjacent ones of the reference bits.
摘要翻译：方法（和结构）感测磁盘驱动器的旋转振动。磁盘驱动器包括旋转盘。盘包括跨越其表面的多个参考位。方法（和结构）包括检测旋转盘上的图案上的参考位，以及分析相邻参考位之间的时间间隔。

3. 发明授权

US06898046B2 Method and system for rotational velocity-based algorithm for vibration compensation in disk drives 失效
标题翻译：用于磁盘驱动器振动补偿的旋转速度算法的方法和系统
公开(公告)号：US06898046B2
公开(公告)日：2005-05-24
申请号：US10153684
申请日：2002-05-24
申请人： Sri M. Sri-Jayantha , Hien Dang , Arun Sharma , Isao Yoneda
发明人： Sri M. Sri-Jayantha , Hien Dang , Arun Sharma , Isao Yoneda
IPC分类号： G11B21/10 , G11B5/55 , G11B5/596 , G11B25/04
CPC分类号： G11B5/5582 , G11B5/596 , G11B5/59627 , G11B25/043
摘要： A disk drive (HDD) (and method) subject to linear and rotational vibration, includes an independent sensing unit for sensing a rotational velocity component of the rotational vibration in a predetermined frequency range, and an optimal filter combination for receiving an output from the sensing unit.
摘要翻译：受到线性和旋转振动的磁盘驱动器（和方法）包括用于感测预定频率范围内的旋转振动的旋转速度分量的独立感测单元，以及用于接收来自感测的输出的最佳滤波器组合单元。

4. 发明授权

US06567230B1 Method and system for performing positioning control of a head actuator in a disk device utilizing a digital filter 失效
标题翻译：用于利用数字滤波器执行磁盘装置中的磁头致动器的定位控制的方法和系统
公开(公告)号：US06567230B1
公开(公告)日：2003-05-20
申请号：US09429696
申请日：1999-10-28
申请人： Naoyuki Kagami , Akira Tokizono , Sri M. Sri-Jayantha , Tatsuya Sakai , Isao Yoneda , Hien Phu Dang , Arun Sharma
发明人： Naoyuki Kagami , Akira Tokizono , Sri M. Sri-Jayantha , Tatsuya Sakai , Isao Yoneda , Hien Phu Dang , Arun Sharma
IPC分类号： G11B2102
CPC分类号： H03H17/0294 , G11B5/5521 , G11B5/56
摘要： A method and system for utilizing a digital filter for actuator positioning control in a disk device. In accordance with the method and system of the present invention multiple selectable filter modules are provided. Each of the multiple selectable filter modules functions in a serial or parallel filtering mode when selected. Multiple configurable registers are also provided wherein the configuration of each of the multiple configurable registers determines a selection of at least one of the multiple selectable filter modules. Particular ones of the multiple configurable registers are selected, such that a configuration of the digital filter is dynamically selectable in order to achieve a predetermined filter output.
摘要翻译：一种利用数字滤波器在盘装置中执行器定位控制的方法和系统。根据本发明的方法和系统，提供了多个可选择的过滤器模块。多个可选滤波器模块中的每一个在选择时以串行或并行滤波模式运行。还提供了多个可配置寄存器，其中多个可配置寄存器中的每一个的配置确定多个可选择滤波器模块中的至少一个的选择。选择多个可配置寄存器中的特定的寄存器，使得可以动态地选择数字滤波器的配置以便实现预定的滤波器输出。

5. 发明授权

US06549349B2 Adaptive vibration control for servo systems in data storage devices 失效
标题翻译：数据存储设备伺服系统的自适应振动控制
公开(公告)号：US06549349B2
公开(公告)日：2003-04-15
申请号：US09955391
申请日：2001-09-18
申请人： Sri Muthuthamby Sri-Jayantha , Arun Sharma , Hien Phu Dang , Naoyuki Kagami , Yuzo Nakagawa , Akira Tokizono , Isao Yoneda
发明人： Sri Muthuthamby Sri-Jayantha , Arun Sharma , Hien Phu Dang , Naoyuki Kagami , Yuzo Nakagawa , Akira Tokizono , Isao Yoneda
IPC分类号： G11B2736
CPC分类号： G11B21/106 , G11B5/59611
摘要： Methods and systems for detecting and correcting for undesirable vibrations impacting the servo systems in data storage devices. A detection technique is provided wherein a detection filter is configured to scan a position signal of the servo system across a range of frequencies, and, at each respective scanned frequency, record an amplitude associated therewith. The recorded amplitudes are examined to determine whether any exceed a threshold, thereby locating a peak frequency of the vibration. Using the detected peak frequency of the vibration, a corrective filter is configured to operate about the peak frequency of vibration, thereby reducing its impact on the position signal in the servo system. Optimum detection and correction filter structures are disclosed, as are techniques for addressing filter state vectors as initial conditions as the corrective filters are repeatedly engaged during successive settle-out and track follow cycles (between seeks), as are continuous adaptation techniques for changing vibration environments.
摘要翻译：用于检测和校正影响数据存储设备中的伺服系统的不期望的振动的方法和系统。提供了一种检测技术，其中检测滤波器被配置为扫描频率范围内的伺服系统的位置信号，并且在每个相应的扫描频率处记录与之相关联的振幅。检查记录的振幅以确定是否有超过阈值，从而定位振动的峰值频率。使用检测到的振动峰值频率，校正滤波器被配置为围绕振动的峰值频率运行，从而减小其对伺服系统中位置信号的影响。公开了最佳检测和校正滤波器结构，作为用于将滤波器状态向量寻址作为初始条件的技术，校正滤波器在连续的稳定和跟踪周期（寻找之间）期间重复接合），以及用于改变振动环境的连续自适应技术。

6. 发明授权

US07271976B2 Magnetic disk drive and method for seek operations with reduced noise 有权
标题翻译：磁盘驱动器和噪声减小的寻道操作方法
公开(公告)号：US07271976B2
公开(公告)日：2007-09-18
申请号：US11265004
申请日：2005-11-01
申请人： Satoshi Ishii , Tetsuo Ueda , Isao Yoneda
发明人： Satoshi Ishii , Tetsuo Ueda , Isao Yoneda
IPC分类号： G11B21/02
CPC分类号： G11B5/5547
摘要： Embodiments of the invention reduce the noise occurring when the lubricating layer on the magnetic disk is smoothed. In one embodiment, a magnetic disk drive has a read/write mode parameter table for generating an electric current to be supplied to a voice coil motor when the magnetic head performs data read/write operations on the magnetic disk. The magnetic disk drive also has a smoothing mode parameter table for generating another electric current to be supplied to the voice coil motor when neither a data read nor a write operation is performed on the magnetic disk. The CPU refers to either the read/write mode parameter table or the smoothing mode parameter table and controls the electric current to be supplied to the voice coil motor. When a lubricating-layer smoothing event occurs, the CPU refers to the smoothing mode parameter table and after generating the associated electric current to be supplied to the voice coil motor, moves the magnetic head to seek between the outermost and innermost tracks on the surface of the magnetic disk to perform a smoothing process for the lubricating layer.
摘要翻译：本发明的实施例减少了当磁盘上的润滑层平滑时产生的噪声。在一个实施例中，当磁头对磁盘执行数据读/写操作时，磁盘驱动器具有用于产生要提供给音圈电机的电流的读/写模式参数表。磁盘驱动器还具有平滑模式参数表，用于当不对磁盘执行数据读取或写入操作时，产生要提供给音圈电机的另一电流。 CPU指的是读/写模式参数表或平滑模式参数表，并控制提供给音圈电机的电流。当发生润滑层平滑事件时，CPU参考平滑模式参数表，并且在产生要提供给音圈电机的相关联的电流之后，移动磁头以在表面上的最外侧和最内侧的轨道之间寻找该磁盘对润滑层进行平滑处理。

7. 发明申请

US20060092549A1 Magnetic disk drive and method for executing seek operation 有权
标题翻译：磁盘驱动器和执行寻道操作的方法
公开(公告)号：US20060092549A1
公开(公告)日：2006-05-04
申请号：US11265004
申请日：2005-11-01
申请人： Satoshi Ishii , Tetsuo Ueda , Isao Yoneda
发明人： Satoshi Ishii , Tetsuo Ueda , Isao Yoneda
IPC分类号： G11B21/02
CPC分类号： G11B5/5547
摘要： Embodiments of the invention reduce the noise occurring when the lubricating layer on the magnetic disk is smoothed. In one embodiment, a magnetic disk drive has a read/write mode parameter table for generating an electric current to be supplied to a voice coil motor when the magnetic head performs data read/write operations on the magnetic disk. The magnetic disk drive also has a smoothing mode parameter table for generating another electric current to be supplied to the voice coil motor when neither a data read nor a write operation is performed on the magnetic disk. The CPU refers to either the read/write mode parameter table or the smoothing mode parameter table and controls the electric current to be supplied to the voice coil motor. When a lubricating-layer smoothing event occurs, the CPU refers to the smoothing mode parameter table and after generating the associated electric current to be supplied to the voice coil motor, moves the magnetic head to seek between the outermost and innermost tracks on the surface of the magnetic disk to perform a smoothing process for the lubricating layer.
摘要翻译：本发明的实施例减少了当磁盘上的润滑层平滑时产生的噪声。在一个实施例中，当磁头对磁盘执行数据读/写操作时，磁盘驱动器具有用于产生要提供给音圈电机的电流的读/写模式参数表。磁盘驱动器还具有平滑模式参数表，用于当不对磁盘执行数据读取或写入操作时，产生要提供给音圈电机的另一电流。 CPU指的是读/写模式参数表或平滑模式参数表，并控制提供给音圈电机的电流。当发生润滑层平滑事件时，CPU参考平滑模式参数表，并且在产生要提供给音圈电机的相关联的电流之后，移动磁头以在表面上的最外侧和最内侧轨迹之间寻找该磁盘对润滑层进行平滑处理。

8. 发明申请

US20050185320A1 Data storage device and control method therefor to prevent off-track writing 有权
标题翻译：数据存储装置及其控制方法，以防止离轨写入
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。

9. 发明授权

US07595955B2 Disk drive device and method for error recovery procedure therefor 失效
标题翻译：磁盘驱动器及其错误恢复方法
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。

10. 发明授权

US07675701B2 Method and apparatus for detecting servo timing marks in a magnetic disk system 失效
标题翻译：用于检测磁盘系统中的伺服定时标记的方法和装置
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。

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