专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 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。

2. 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）。

3. 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.

4. 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。

5. 发明申请

US20060023343A1 Servo controller in magnetic disk drive 失效
标题翻译：磁盘驱动器中的伺服控制器
公开(公告)号：US20060023343A1
公开(公告)日：2006-02-02
申请号：US11190674
申请日：2005-07-26
申请人： Masashi Kisaka
发明人： Masashi Kisaka
IPC分类号： G11B5/596
CPC分类号： G11B5/5526
摘要： Embodiment of the invention inhibit an effect of repeatable runout errors without expanding servo data areas of the magnetic disk. With regard to low frequency components of positional information read by a magnetic head, which are substantially equivalent to a rotational frequency of a magnetic disk, a servo controller according to one embodiment includes: a peak filter for removing such low frequency components from the positional information; a correction module for correcting the positional information by using repeatable runout compensation data; a phase correction circuit for calculating the amount of control based on an output of the correction module; and an adding circuit for adding an output of the peak filter and an output of the phase correction circuit. The servo controller controls positioning of the magnetic head by calculating an amount of positioning control of the magnetic head based on the positional information and adding it to the amount of control calculated based on the positional information and the repeatable runout compensation data.
摘要翻译：本发明的实施例在不扩大磁盘的伺服数据区的情况下，抑制可重复的跳动误差的影响。关于基本上等同于磁盘的旋转频率的由磁头读取的位置信息的低频分量，根据一个实施例的伺服控制器包括：峰值滤波器，用于从位置信息中去除这些低频分量 ; 校正模块，用于通过使用可重复的跳动补偿数据来校正位置信息; 相位校正电路，用于基于校正模块的输出来计算控制量; 以及用于将峰值滤波器的输出和相位校正电路的输出相加的加法电路。伺服控制器通过基于位置信息计算磁头的定位控制量并将其添加到基于位置信息和可重复的跳动补偿数据计算的控制量来控制磁头的定位。

6. 发明授权

US06958882B2 Shock control for rotational recording apparatus 失效
标题翻译：旋转记录装置的冲击控制
公开(公告)号：US06958882B2
公开(公告)日：2005-10-25
申请号：US10245258
申请日：2002-09-17
申请人： Masashi Kisaka
发明人： Masashi Kisaka
IPC分类号： G11B21/08 , G05B11/36 , G11B5/55 , G11B21/10 , G11B5/596
CPC分类号： G11B5/5582
摘要： A rotational recording apparatus that comprises a shock sensor and that adaptively processes the output of the shock sensor to obtain a feed forward signal, so as to implement a stable operation within a practical range. In a rotational recording apparatus wherein a VCM system having a transfer function (G) and a controller having a transfer function (H) perform feedback, the band of a signal(s) of a shock sensor (S) is limited by a bandpass filter (F), and a resultant signal (f) is employed to obtain the output of an adaptive filter (FIR). A signal (p) that a phase shift filter (P) outputs by shifting the phase of the signal f is employed as a signal to be transmitted to a parameter adaptation algorithm (PAA). Within the limited band, the phase of the phase shift filter P matches the phase of G/(1+GH) within a range of ±90 degrees.
摘要翻译：一种旋转记录装置，包括冲击传感器，并且自适应地处理冲击传感器的输出以获得前馈信号，以便在实际范围内实现稳定的操作。在具有传递函数（G）的VCM系统和具有传递函数（H）的控制器执行反馈的旋转记录装置中，冲击传感器（S）的信号的频带被带通滤波器（F），并且使用合成信号（f）来获得自适应滤波器（FIR）的输出。采用通过移位信号f的相位来输出相移滤波器（P）的信号（p）作为要发送到参数自适应算法（PAA）的信号。在有限频带内，相移滤波器P的相位在±90度的范围内匹配G /（1 + GH）的相位。

7. 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。

8. 发明授权

US07864484B2 Hard-disk drive 有权
标题翻译：硬盘驱动器
公开(公告)号：US07864484B2
公开(公告)日：2011-01-04
申请号：US12474913
申请日：2009-05-29
申请人： Masashi Kisaka , Hiroshi Uchida
发明人： Masashi Kisaka , Hiroshi Uchida
IPC分类号： G11B21/02 , G11B5/596
CPC分类号： G11B5/5582 , G11B19/042
摘要： A hard-disk drive (HDD). The HDD includes a main control circuit. The main control circuit includes a frequency-hunting peak filter. The frequency-hunting peak filter includes a peak filter wherein a gain at a center frequency becomes finite and a reciprocal of the transfer function is represented by z/FD in z-transform space. The denominator of the transfer function of the peak filter that is represented by FD, has a real part that becomes zero at the center frequency and an imaginary part that becomes a positive number at the center frequency. In addition, the frequency-hunting peak filter includes a frequency updating unit that updates the center frequency to converge onto a frequency of disturbance by obtaining a comparative relation between the center frequency and the frequency of disturbance acting on the control system in accordance with a phase difference between an input and output of the transfer function represented by z/FD.
摘要翻译：硬盘驱动器（HDD）。 HDD包括主控制电路。主控电路包括频率峰值滤波器。频率峰值滤波器包括峰值滤波器，其中中心频率的增益变得有限，并且传递函数的倒数在z变换空间中由z / FD表示。由FD表示的峰值滤波器的传递函数的分母具有在中心频率处变为零的实部，在中心频率处变为正数的虚部。此外，频率搜索峰值滤波器包括频率更新单元，其通过根据相位获取中心频率和作用于控制系统的干扰频率之间的比较关系来更新中心频率以收敛到干扰频率上由z / FD表示的传递函数的输入和输出之间的差异。

9. 发明授权

US07573667B2 Servo information write method and apparatus 失效
标题翻译：伺服信息写入方法和装置
公开(公告)号：US07573667B2
公开(公告)日：2009-08-11
申请号：US11282867
申请日：2005-11-17
申请人： Masashi Kisaka
发明人： Masashi Kisaka
IPC分类号： G11B5/09
CPC分类号： G11B5/59633 , G11B5/59638
摘要： Embodiments of the invention provide a servo information write method that makes it possible to properly locate the last-written servo information even when old servo information is overwritten by new servo information. In one embodiment, a servo track writer controller, which is within a servo track writer, reads a serial number (S/N) from a HDD (step 101), and acquires a magnetic disk drive servo information write count (P-ID) from a manufacturing process host (step 102). The next step (step 103) is then performed to control a positioner and a read/write channel so as to start writing servo information onto a magnetic disk. Servo information is sequentially written until the last track is written into (step 104). When the Nth servo information is to be written, a P-ID (N) is written subsequently to a burst signal (step 105). When the last track is written into in step 104, step 106 is performed to notify the manufacturing process host that the Nth servo information write is performed. Then, the servo information write process ends.
摘要翻译：本发明的实施例提供一种伺服信息写入方法，即使当旧的伺服信息被新的伺服信息覆盖时，也可以正确定位最后写入的伺服信息。在一个实施例中，伺服轨迹写入器内的伺服记录器控制器从HDD读取序列号（S / N）（步骤101），并获取磁盘驱动器伺服信息写入计数（P-ID）（步骤102）。然后执行下一步骤（步骤103）以控制定位器和读/写通道，以开始将伺服信息写入到磁盘上。顺序写入伺服信息，直到写入最后的轨道（步骤104）。当要写入第N个伺服信息时，随后将一个P-ID（N）写入脉冲信号（步骤105）。当在步骤104中写入最后一个轨道时，执行步骤106以向制造过程主机通知执行第N个伺服信息写入。然后，伺服信息写入处理结束。

10. 发明授权

US07317591B2 Servo control for magnetic disk drive 失效
标题翻译：伺服控制磁盘驱动器
公开(公告)号：US07317591B2
公开(公告)日：2008-01-08
申请号：US11270855
申请日：2005-11-08
申请人： Masashi Kisaka
发明人： Masashi Kisaka
IPC分类号： G11B5/596
CPC分类号： G11B5/59627
摘要： Embodiments of the invention provide a magnetic disk drive that exhibits excellent overall stability of a feedback control system even when the preset frequency for a peak filter significantly changes. In one embodiment, the symbol P denotes a VCM model, which outputs a head current position signal. The symbol C denotes a controller. The controller inputs a position error signal PES that is derived from a head current position signal output from the P, and outputs to addition point a control signal of a drive device for moving a magnetic head. Signal x to which disturbance noise is added enters a peak filter. The output y from the peak filter is output to addition point via a phase determination filter and added to a control signal output from the controller. A phase comparison frequency updater compares the phase of the position error signal against the output signal phase of the peak filter, changes the preset frequency for the peak filter in accordance with the result of comparison, and changes a transfer function for peak filter phase determination in accordance with a change in the preset frequency.
摘要翻译：本发明的实施例提供了即使当峰值滤波器的预设频率显着改变时，反馈控制系统也表现出优异的整体稳定性的磁盘驱动器。在一个实施例中，符号P表示VCM模型，其输出头当前位置信号。符号C表示控制器。控制器输入从P输出的头当前位置信号导出的位置误差信号PES，并向附加点输出用于移动磁头的驱动装置的控制信号。添加了干扰噪声的信号x进入峰值滤波器。来自峰值滤波器的输出y通过相位确定滤波器输出到相加点，并加到从控制器输出的控制信号中。相位比较频率更新器将位置误差信号的相位与峰值滤波器的输出信号相位进行比较，根据比较结果改变峰值滤波器的预置频率，并改变峰值滤波器相位确定的传递函数按照预设频率的变化。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式