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：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：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：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：US07593179B2

公开(公告)日：2009-09-22

申请号：US12105868

申请日：2008-04-18

申请人： Atsushi Suzuki ,  Yukio Abe ,  Shigenori Yanagi

发明人： Atsushi Suzuki ,  Yukio Abe ,  Shigenori Yanagi

IPC分类号： G11B21/02

CPC分类号： G11B19/042

摘要： A control apparatus detects positional information of a head performing writing processing every predetermined time interval, and computes next-sample projected positional information of the head based on the difference between the positional information detected the previous time and the positional information detected the current time, and the current detected positional information for every position information detected. The control apparatus determines whether the computed next-sample projected positional information is greater than a next-sample projected position threshold which is a predetermined threshold. Following this, in the case that determination is made that the next-sample projected positional information is greater than the projected position threshold, the disk control apparatus controls a storage device to stop the writing processing after the writing processing is performed through the end of the sector wherein the writing processing is currently being performed.

摘要翻译： 控制装置每隔预定时间间隔检测执行写入处理的头部的位置信息，并且基于前一时间检测到的位置信息与检测到的当前时间的位置信息之间的差异来计算头部的下一样本投影位置信息，以及 当前检测到的每个位置信息的位置信息。 控制装置确定所计算的下一样本投影位置信息是否大于作为预定阈值的下一样本投影位置阈值。 接下来，在确定下一个样本投影位置信息大于投影位置阈值的情况下，盘控制装置控制存储装置在执行写入处理之后停止写入处理 其中当前正在执行写入处理。

公开(公告)号：US20080291565A1

公开(公告)日：2008-11-27

申请号：US12105868

申请日：2008-04-18

申请人： Atsushi Suzuki ,  Yukio Abe ,  Shigenori Yanagi

发明人： Atsushi Suzuki ,  Yukio Abe ,  Shigenori Yanagi

IPC分类号： G11B21/02

CPC分类号： G11B19/042

摘要： A control apparatus detects positional information of a head performing writing processing every predetermined time interval, and computes next-sample projected positional information of the head based on the difference between the positional information detected the previous time and the positional information detected the current time, and the current detected positional information for every position information detected. The control apparatus determines whether the computed next-sample projected positional information is greater than a next-sample projected position threshold which is a predetermined threshold. Following this, in the case that determination is made that the next-sample projected positional information is greater than the projected position threshold, the disk control apparatus controls a storage device to stop the writing processing after the writing processing is performed through the end of the sector wherein the writing processing is currently being performed.

摘要翻译： 控制装置每隔预定时间间隔检测执行写入处理的头部的位置信息，并且基于前次检测到的位置信息与检测到的当前时间的位置信息之间的差异来计算头部的下一样本投影位置信息，以及 当前检测到的每个位置信息的位置信息。 控制装置确定所计算的下一样本投影位置信息是否大于作为预定阈值的下一样本投影位置阈值。 接下来，在确定下一个样本投影位置信息大于投影位置阈值的情况下，盘控制装置控制存储装置在执行写入处理之后停止写入处理 其中当前正在执行写入处理。

公开(公告)号：US07321477B2

公开(公告)日：2008-01-22

申请号：US11335127

申请日：2006-01-19

申请人： Atsushi Suzuki ,  Yukio Abe ,  Shigenori Yanagi

发明人： Atsushi Suzuki ,  Yukio Abe ,  Shigenori Yanagi

IPC分类号： G11B19/04 ,  G11B19/02 ,  G11B5/596

CPC分类号： G11B19/20 ,  G11B19/04

摘要： A disk control apparatus controls a disk driving unit that performs read/write of data with a head. A vibration detecting unit detects a vibration of the disk driving unit. A disk control unit controls the disk driving unit based on the detected vibration.

摘要翻译： 盘控制装置控制用头执行数据读/写的盘驱动单元。 振动检测单元检测盘驱动单元的振动。 磁盘控制单元基于检测到的振动来控制磁盘驱动单元。

公开(公告)号：US20070070542A1

公开(公告)日：2007-03-29

申请号：US11335127

申请日：2006-01-19

申请人： Atsushi Suzuki ,  Yukio Abe ,  Shigenori Yanagi

发明人： Atsushi Suzuki ,  Yukio Abe ,  Shigenori Yanagi

IPC分类号： G11B33/14

CPC分类号： G11B19/20 ,  G11B19/04

摘要： A disk control apparatus controls a disk driving unit that performs read/write of data with a head. A vibration detecting unit detects a vibration of the disk driving unit. A disk control unit controls the disk driving unit based on the detected vibration.

摘要翻译： 盘控制装置控制用头执行数据读/写的盘驱动单元。 振动检测单元检测盘驱动单元的振动。 磁盘控制单元基于检测到的振动来控制磁盘驱动单元。

公开(公告)号：US07382563B2

公开(公告)日：2008-06-03

申请号：US11340229

申请日：2006-01-26

申请人： Shunji Saitoh ,  Atsushi Suzuki ,  Takeshi Hara

发明人： Shunji Saitoh ,  Atsushi Suzuki ,  Takeshi Hara

IPC分类号： G11B19/04

CPC分类号： G11B33/08 ,  G11B5/5582 ,  G11B19/04

摘要： Upon obtaining a detection signal of a shock sensor that detects a shock applied to an apparatus for output, a write disabling unit disables writing by a head on a medium over a predetermined time corresponding to a shock convergence. A determining unit determines, during the write disable, whether an output of the shock sensor is a detection output of the shock sensor due to a shock or an erroneous detection output of the shock sensor due to power supply fluctuations. A sensitivity control unit increases a detection sensitivity of the shock sensor when the determining unit determines that the output is a detection output due to the shock, and decreases the detection sensitivity of the shock sensor and clears the write disable when the determining unit determines that the output is an erroneous detection output due to power supply fluctuations.

摘要翻译： 在获得检测施加到输出装置的冲击的冲击传感器的检测信号时，写入禁止单元在对应于冲击收敛的预定时间内禁止在介质上的头的写入。 在写入禁止期间，确定单元确定由于电源波动引起的冲击或冲击传感器的错误检测输出，冲击传感器的输出是否为冲击传感器的检测输出。 当确定单元确定输出是由于冲击产生的检测输出时，灵敏度控制单元增加冲击传感器的检测灵敏度，并且降低冲击传感器的检测灵敏度并且当确定单元确定 由于电源波动，输出是错误的检测输出。

公开(公告)号：US20060203370A1

公开(公告)日：2006-09-14

申请号：US11182643

申请日：2005-07-15

申请人： Atsushi Suzuki ,  Takeshi Hara ,  Shigenori Yanagi

发明人： Atsushi Suzuki ,  Takeshi Hara ,  Shigenori Yanagi

IPC分类号： G11B5/09 ,  G11B19/02 ,  G11B5/596

CPC分类号： G11B19/04 ,  G11B5/40 ,  G11B5/59616

摘要： A data storage device executes sector guarantee processing at an unexpected power supply disconnection. The sector guarantee processing can be accurately performed even if the fluctuation of power supply voltage during normal operation is high. The voltage of the power supply is monitored via an A/D converter. The control unit calculates a voltage change value, which is a relative value of the detected voltage of the power supply, and judges power supply disconnection by the level of the voltage change value, to perform sector guarantee processing. The voltage fluctuation during normal operation and the voltage fluctuation at power supply disconnection can be distinguished, power supply disconnection can be accurately detected, and write disable status can be judged.

摘要翻译： 数据存储装置在意外的电源断开时执行扇区保证处理。 即使在正常操作期间电源电压的波动较大，也能够准确地进行扇区保证处理。 通过A / D转换器监视电源电压。 控制单元计算作为电源的检测电压的相对值的电压变化值，并根据电压变化值的电平来判断电源断开，进行扇区保证处理。 可以区分正常工作期间的电压波动和电源断开时的电压波动，可以精确检测电源断开，并且可以判断写入禁止状态。