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1. 发明授权

US06470412B1 Disk drive, disk control method, data read/write method, data assignment method, and disk storage medium 失效
标题翻译：磁盘驱动器，磁盘控制方法，数据读/写方式，数据分配方法和磁盘存储介质
公开(公告)号：US06470412B1
公开(公告)日：2002-10-22
申请号：US09169549
申请日：1998-10-09
申请人： Masashi Kisaka , Yutaka Ozawa , Kazunari Tsuchimoto
发明人： Masashi Kisaka , Yutaka Ozawa , Kazunari Tsuchimoto
IPC分类号： G06F1200
CPC分类号： G11B5/5547 , G11B21/083
摘要： A disk drive and a disk drive control method is described which reduces the number of one track seeks a drive performs. The one track seeks can operate the actuator bearing in a non-linear mode or can increase in the friction of the actuator bearing which leads to servo positioning inaccuracies. In the disk drive the logical block address (LBA) assignments are made so that when sequential addresses are allocated to two different tracks, the tracks are physically non-adjacent. Thus, when a sequential LBAs are read across a track boundary, the actuator is moved farther than would be required if the LBAs were assigned the adjacent tracks.
摘要翻译：描述了磁盘驱动器和磁盘驱动器控制方法，其减少了驱动器执行的一个磁道的数量。单轨追求可以以非线性模式操作致动器轴承，或者可以增加致动器轴承的摩擦，这导致伺服定位不准确。在磁盘驱动器中，进行逻辑块地址（LBA）分配，使得当将顺序地址分配给两个不同的轨道时，轨道物理上不相邻。因此，当沿着轨道边界读取顺序的LBA时，如果LBA被分配相邻的轨道，则致动器被移动得比所需的更远。

2. 发明申请

US20060077587A1 Shock resistant, high reliability rotating magnetic storage device and method 失效
标题翻译：耐冲击，高可靠性旋转磁存储装置及方法
公开(公告)号：US20060077587A1
公开(公告)日：2006-04-13
申请号：US11288651
申请日：2005-11-29
申请人： Masashi Kisaka , Yutaka Ozawa , Kenji Toga
发明人： Masashi Kisaka , Yutaka Ozawa , Kenji Toga
IPC分类号： G11B21/02 , G11B19/04
CPC分类号： G11B5/5582 , G11B19/04 , G11B21/12 , G11B25/043 , G11B33/08
摘要： An information recording method in a rotating storage apparatus comprising a rotating recording medium for recording information, a head for performing at least a write operation onto the rotating recording medium, and an acceleration sensor for detecting a shock. The method comprises outputting a shock out signal if an output from the acceleration sensor exceeds a predetermined threshold. A signal is output at a first level during a write inhibit period in response to the input of the shock out signal, where the write inhibit period is selected based at least in part on a time span in which the output of the acceleration sensor exceeds the predetermined threshold. Writing to the rotating recording medium is prohibited during the write inhibit period.
摘要翻译：一种旋转存储装置中的信息记录方法，包括用于记录信息的旋转记录介质，用于对旋转记录介质执行至少写入操作的头部和用于检测冲击的加速度传感器。该方法包括：如果来自加速度传感器的输出超过预定阈值，则输出冲击输出信号。响应于冲击输出信号的输入，在写入禁止期间，信号在第一电平输出，其中写入禁止期间至少部分地基于加速度传感器的输出超过预定阈值。在写入禁止期间禁止写入旋转记录介质。

3. 发明授权

US06747832B2 Disk apparatus and head position control method 失效
标题翻译：磁盘设备和磁头位置控制方法
公开(公告)号：US06747832B2
公开(公告)日：2004-06-08
申请号：US09819154
申请日：2001-03-27
申请人： Masashi Kisaka , Yutaka Ozawa , Kenji Toga
发明人： Masashi Kisaka , Yutaka Ozawa , Kenji Toga
IPC分类号： G11B1546
CPC分类号： G11B5/5526
摘要： A disk drive has a data recording medium such as a disk, a spindle motor for rotating the disk, disk rotation speed controlling logics for supplying a spindle current to the above described spindle motor to rotate the disk at a constant speed, a head unit for accessing the disk, an actuator for moving the head unit, and head position controlling logics for driving the actuator and controlling the position of the head unit. The head position controlling logic obtains the value of the spindle current and controls the position of the head unit on the basis of the above described spindle current value by using the fact that the spindle current varies according to variations in the position of the head unit.
摘要翻译：磁盘驱动器具有诸如盘的数据记录介质，用于旋转盘的主轴电机，用于向上述主轴电机提供主轴电流的盘旋转速度控制逻辑以使盘以恒定速度旋转;头单元，用于访问盘，用于移动头单元的致动器和用于驱动致动器的头部位置控制逻辑并控制头单元的位置。磁头位置控制逻辑获得主轴电流的值，并且通过使用主轴电流根据磁头单元位置的变化而变化的事实，基于上述主轴电流值来控制磁头单元的位置。

4. 发明授权

US07408732B2 Shock resistant, high reliability rotating magnetic storage device and method 失效
标题翻译：耐冲击，高可靠性旋转磁存储装置及方法
公开(公告)号：US07408732B2
公开(公告)日：2008-08-05
申请号：US11288651
申请日：2005-11-29
申请人： Masashi Kisaka , Yutaka Ozawa , Kenji Toga
发明人： Masashi Kisaka , Yutaka Ozawa , Kenji Toga
IPC分类号： G11B19/04
CPC分类号： G11B5/5582 , G11B19/04 , G11B21/12 , G11B25/043 , G11B33/08
摘要： An information recording method in a rotating storage apparatus comprising a rotating recording medium for recording information, a head for performing at least a write operation onto the rotating recording medium, and an acceleration sensor for detecting a shock. The method comprises outputting a shock out signal if an output from the acceleration sensor exceeds a predetermined threshold. A signal is output at a first level for a write inhibit period in response to the input of the shock out signal, where the write inhibit period is selected based at least in part on a time span in which the output of the acceleration sensor exceeds the predetermined threshold. Writing to the rotating recording medium is prohibited during the write inhibit period.
摘要翻译：一种旋转存储装置中的信息记录方法，包括用于记录信息的旋转记录介质，用于对旋转记录介质执行至少写入操作的头部和用于检测冲击的加速度传感器。该方法包括：如果来自加速度传感器的输出超过预定阈值，则输出冲击输出信号。响应于冲击输出信号的输入，信号在第一电平被输出用于写入禁止期间，其中写入禁止期间至少部分地基于加速度传感器的输出超过预定阈值。在写入禁止期间禁止写入旋转记录介质。

5. 发明授权

US07002766B2 Shock resistant, high reliability rotating magnetic storage device 有权
标题翻译：耐冲击，高可靠性旋转磁存储装置
公开(公告)号：US07002766B2
公开(公告)日：2006-02-21
申请号：US10793318
申请日：2004-03-03
申请人： Masashi Kisaka , Yutaka Ozawa , Kenji Toga
发明人： Masashi Kisaka , Yutaka Ozawa , Kenji Toga
IPC分类号： G11B15/04
CPC分类号： G11B5/5582 , G11B19/04 , G11B21/12 , G11B25/043 , G11B33/08
摘要： A rotating storage apparatus is provided for high recording reliability in an environment in which a shock or vibration exists. Provided are means for outputting a shock out signal (SO) if an output from an acceleration sensor exceeds a predetermined threshold, a latch circuit 21 for outputting a latch signal at high level during a predetermined write inhibit period after the shock out signal (SO) is input, and a write gate signal (WG) which goes high when a write is enabled. A write enable signal is generated by an AND circuit 23 having a NOT output of the latch signal as well as the write gate signal WO as its inputs.
摘要翻译：提供了一种旋转存储装置，用于在存在冲击或振动的环境中实现高记录可靠性。提供了如果加速度传感器的输出超过预定阈值则输出冲击输出信号（SO）的装置，用于在冲击输出信号（SO）之后的预定写入禁止期间内以高电平输出锁存信号的锁存电路21，和写入门信号（WG），当写入被使能时变为高电平。写入使能信号由具有锁存信号的非输出的AND电路23以及写入门信号WO作为其输入产生。

6. 发明授权

US06754021B2 Shock resistant, high reliability rotating magnetic storage device 有权
标题翻译：耐冲击，高可靠性旋转磁存储装置
公开(公告)号：US06754021B2
公开(公告)日：2004-06-22
申请号：US09813081
申请日：2001-03-19
申请人： Masashi Kisaka , Yutaka Ozawa , Kenji Toga
发明人： Masashi Kisaka , Yutaka Ozawa , Kenji Toga
IPC分类号： G11B1904
CPC分类号： G11B5/5582 , G11B19/04 , G11B21/12 , G11B25/043 , G11B33/08
摘要： A rotating storage apparatus is provided for high recording reliability in an environment in which a shock or vibration exists. Provided are means for outputting a shock out signal (SO) if an output from an acceleration sensor exceeds a predetermined threshold, a latch circuit 21 for outputting a latch signal at high level during a predetermined write inhibit period after the shock out signal (SO) is input, and a write gate signal (WG) which goes high when a write is enabled. A write enable signal is generated by an AND circuit 23 having a NOT output of the latch signal as well as the write gate signal WG as its inputs.
摘要翻译：提供了一种旋转存储装置，用于在存在冲击或振动的环境中实现高记录可靠性。提供了如果加速度传感器的输出超过预定阈值则输出冲击输出信号（SO）的装置，用于在冲击输出信号（SO）之后的预定写入禁止期间内以高电平输出锁存信号的锁存电路21，和写入门信号（WG），当写入被使能时变为高电平。写使能信号由具有锁存信号的非输出的AND电路23以及写入门信号WG作为其输入产生。

7. 发明授权

US07626780B2 Magnetic disk drive 失效
标题翻译：磁盘驱动器
公开(公告)号：US07626780B2
公开(公告)日：2009-12-01
申请号：US12148008
申请日：2008-04-15
申请人： Masashi Kisaka
发明人： Masashi Kisaka
IPC分类号： G11B21/02 , G11B5/596
CPC分类号： G11B5/556 , G11B5/4873
摘要： Embodiments of the present invention help to provide a magnetic disk drive that is capable of reducing a time period necessary for positioning a magnetic head when positioning the magnetic head by use of a dual-stage actuator. According to one embodiment, a main control circuit of a magnetic head device selects one of a seek mode and a positioning mode. The seek mode is to set a coarse adjustment control system to be a stable system by not causing control of a piezoelectric actuator to be performed by a fine adjustment control circuit. The positioning mode is to set the coarse adjustment control system to be an unstable system and setting a total control system inclusive of the coarse adjustment control system and a fine adjustment control system to be the stable system by causing the control of the piezoelectric actuator to be performed by the fine adjustment control circuit. Thereby the main control circuit causes the control system to operate.
摘要翻译：本发明的实施例有助于提供一种磁盘驱动器，该磁盘驱动器能够通过使用双级致动器来定位磁头来减少用于定位磁头所需的时间段。根据一个实施例，磁头装置的主控电路选择搜索模式和定位模式之一。搜索模式是通过不由微调控制电路执行压电致动器的控制来将粗调控制系统设置为稳定的系统。定位模式是将粗调控制系统设置为不稳定的系统，并通过使压电致动器的控制成为稳定系统，将粗调控制系统和微调控制系统的整体控制系统设定为稳定系统由微调控制电路执行。由此，主控制电路使控制系统工作。

8. 发明授权

US07561369B2 Drive unit 失效
标题翻译：驱动单元
公开(公告)号：US07561369B2
公开(公告)日：2009-07-14
申请号：US11894873
申请日：2007-08-21
申请人： Kazuaki Usui , Masashi Kisaka , Hidefumi Tominaga , Koumei Hanaoka , Masaki Nagashima
发明人： Kazuaki Usui , Masashi Kisaka , Hidefumi Tominaga , Koumei Hanaoka , Masaki Nagashima
IPC分类号： G11B5/596
CPC分类号： G11B5/59627
摘要： Embodiments in accordance with the present invention provide a drive unit that is capable of satisfactorily performing the positioning control with disturbance components included in a position error signal being effectively controlled. According to one embodiment, an error signal generator of a drive unit generates a position error signal (PES) on the basis of servo data read out from a magnetic disk. On the assumption that a frequency of a periodic variation component included in the PES is a target frequency, if a target frequency deviates from an effective frequency range of a digital filter, a downsampler down-samples the PES, and then supplies the PES to the digital filter so that the effective frequency range is shifted. As a result, within the shifted effective frequency range, a setting changing unit can control a setting frequency of the digital filter so that the setting frequency follows the target frequency. Therefore, it is possible to effectively reduce a signal component of the target frequency (a periodic variation component included in the PES).
摘要翻译：根据本发明的实施例提供一种驱动单元，其能够令人满意地执行定位控制，其中包括在有效控制的位置误差信号中的扰动分量。根据一个实施例，驱动单元的误差信号发生器基于从磁盘读出的伺服数据产生位置误差信号（PES）。假设PES中包含的周期性变化分量的频率是目标频率，则如果目标频率偏离数字滤波器的有效频率范围，则下采样器对PES进行下采样，然后将PES提供给数字滤波器，使有效频率范围发生变化。结果，在移动的有效频率范围内，设定改变单元可以控制数字滤波器的设定频率，使得设定频率跟随目标频率。因此，有可能有效地降低目标频率的信号分量（包括在PES中的周期性变化分量）。

9. 发明授权

US07136258B2 Rotational recording apparatus and control method 有权
公开(公告)号：US07136258B2
公开(公告)日：2006-11-14
申请号：US10242220
申请日：2002-09-12
申请人： Masashi Kisaka
发明人： Masashi Kisaka
IPC分类号： G11B5/596
CPC分类号： G11B5/5526 , G11B5/59605
摘要： A technique for adaptively and stably updating the feed forward value required to drive the head of a rotational recording apparatus. A trajectory of a target position is generated for each seek command by using a compound function comprising a ramp function and a sine-wave function. The sine-wave element of the target position is transmitted to an adaptive filter for updating coefficients of the compound formula. All elements other than the sine-wave element are removed to provide a smooth update of the compound function's coefficients.

10. 发明授权

US07006321B2 Data storage apparatus, rotation control apparatus, and rotation control method 有权
标题翻译：数据存储装置，旋转控制装置和旋转控制方法
公开(公告)号：US07006321B2
公开(公告)日：2006-02-28
申请号：US10405306
申请日：2003-04-01
申请人： Masashi Kisaka
发明人： Masashi Kisaka
IPC分类号： G11B19/247
CPC分类号： G11B5/59605 , G11B5/5526
摘要： The object is to raise controller gain while absorbing magnet position dispersion in a motor, and implement rotation control that is resistant to the influence of disturbance. There are provided a spindle motor 3 that performs rotational drive of a predetermined drive object, and a controller 121 that controls rotational drive of this spindle motor 3 by comparing a pulse time in rotational drive of this spindle motor 3 with a predetermined target time and performing feedback; and also provided is a peak filter 122 that compensates control by the controller 121 by varying the target time dynamically so as to suppress the rotation frequency and higher harmonic components thereof contained in the drive current waveform of the spindle motor 3.
摘要翻译：目的是提高控制器的增益，同时吸收电机中的磁体位置分散，实现抵抗干扰影响的旋转控制。设置有执行预定驱动对象的旋转驱动的主轴电动机3以及通过将该主轴电动机3的旋转驱动的脉冲时间与规定的目标时间进行比较来控制该主轴电动机3的旋转驱动的控制器121，反馈; 并且还提供了一种峰值滤波器122，其通过动态地改变目标时间来补偿控制器121的控制，以便抑制主轴电动机3的驱动电流波形中包含的旋转频率和高次谐波分量。

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