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11. 发明授权

US07315430B2 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：US07315430B2
公开(公告)日：2008-01-01
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。

12. 发明申请

US20060109580A1 Magnetic disk medium, magnetic disk drive, and method for detecting rotational position of magnetic disk medium 失效
标题翻译：磁盘介质，磁盘驱动器和用于检测磁盘介质的旋转位置的方法
公开(公告)号：US20060109580A1
公开(公告)日：2006-05-25
申请号：US11273792
申请日：2005-11-14
申请人： Masashi Kisaka , Masahiro Shohda
发明人： Masashi Kisaka , Masahiro Shohda
IPC分类号： G11B5/09 , G11B5/596
CPC分类号： G11B5/59655
摘要： Embodiments of the invention reduce the information (storage) overhead for determining the rotational position of a magnetic disk medium, as well as reducing the rotational position detection time. In one embodiment, a sector servo magnetic disk medium is configured such that: each track is divided into blocks each including a series of sectors; each block stores a positional information bit string as rotational position information; the positional information bit string is made up of a position code and an identification code, the position code including a block number, the identification code being used to identify the start or the end of the position code; and each bit of the positional information bit string is stored in a different sector of the block. When each block is made up of 12 sectors, for instance, if the block number is denoted as b0b1b2b3b4b5, the positional information bit string may be expressed as 00001b0b1b21b3b4b5, where the first 5 bits “00001” constitute an identification code.
摘要翻译：本发明的实施例减少了用于确定磁盘介质的旋转位置的信息（存储）开销，以及减小旋转位置检测时间。在一个实施例中，扇区伺服磁盘介质被配置为使得：每个轨道被分成块，每个块包括一系列扇区; 每个块将位置信息位串存储为旋转位置信息; 所述位置信息位串由位置码和识别码构成，所述位置码包括块号，所述识别码用于识别所述位置码的开始或结束; 并且位置信息位串的每一位被存储在块的不同扇区中。当每个块由12个扇区组成时，例如，如果块号被表示为b b _{b _{位置信息位串可以表示为00001b b 5 其中前5位“00001”构成识别符号，其中，第一个5比特“00001”构成一个标识符码。}}

13. 发明授权

US06754031B1 Method and apparatus for controlling an access mechanism within a disk drive 失效
标题翻译：用于控制磁盘驱动器内的访问机构的方法和装置
公开(公告)号：US06754031B1
公开(公告)日：2004-06-22
申请号：US09629366
申请日：2000-08-01
申请人： Masashi Kisaka
发明人： Masashi Kisaka
IPC分类号： G11B5596
CPC分类号： G11B5/5526
摘要： A method and apparatus for controlling an access mechanism within a disk drive are disclosed. A servo apparatus comprises a first detection module for discretely detecting a displacement value of an access mechanism from a target position at predetermined time intervals, a first feedback module for calculating a first feedback value on the basis of the detected displacement value, a second detection module for discretely detecting a physical value, including the speed of the access mechanism, at least once at each of the predetermined time intervals, a second feedback module for calculating a second feedback value on the basis of the physical value, including the speed, and a motor driving module for driving a motor according to the first feedback value and the second feedback value.
摘要翻译：公开了一种用于控制磁盘驱动器内的访问机构的方法和装置。一种伺服装置，包括：第一检测模块，用于以预定的时间间隔从目标位置离散地检测存取机构的位移值;第一反馈模块，用于基于检测到的位移值计算第一反馈值;第二检测模块用于在所述预定时间间隔的每一个处离散地检测包括所述访问机构的速度的物理值至少一次;第二反馈模块，用于基于包括所述速度在内的所述物理值计算第二反馈值;以及马达驱动模块，用于根据第一反馈值和第二反馈值驱动马达。

14. 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。

15. 发明授权

US5726823A Method of detecting positioning of a magnetic head, and a magnetic disk device 失效
标题翻译：检测磁头定位的方法和磁盘装置
公开(公告)号：US5726823A
公开(公告)日：1998-03-10
申请号：US636789
申请日：1996-04-22
申请人： Masashi Kisaka , Isao Yoneda
发明人： Masashi Kisaka , Isao Yoneda
IPC分类号： G11B21/10 , G11B5/596
CPC分类号： G11B5/59655
摘要： A method and apparatus for simply detecting the magnetic head position over a wide range. A magnetic disk has recorded thereon a plurality of data tracks 54 formed along the radial direction (arrow B), and burst pattern rows A, B, C, and D. Signal recording areas 50a and 50b of pattern rows A and B are arranged in a staggered manner, their end sides along the radial direction corresponding to respective widthwise central portions of tracks 54. Signal recording areas 50c and 50d of pattern rows C and D are also arranged in a staggered manner, their end sides along the radial direction corresponding to respective boundaries of tracks 54. Based on signals A, B, C, and D obtained by moving the magnetic head and reading each pattern row, data SA representing signal A/(A+B) and data SC representing signal C/(C+D) are generated. By detecting the offset of data SC for every predetermined period of time, and using each portion, which varies linearly with respect to the movement of magnetic head, of data SA, data SA+SC-offset, and data SA-SC+offset, the position of the magnetic head is detected.
摘要翻译：一种在宽范围内简单地检测磁头位置的方法和装置。在其上记录有沿着径向（箭头B）形成的多个数据轨道54和突发图案行A，B，C和D的磁盘。图案行A和B的信号记录区域50a和50b布置在它们的沿着径向方向的端侧对应于轨道54的各个宽度方向的中心部分。图案行C和D的信号记录区域50c和50d也以交错的方式布置，它们的端侧沿径向对应于根据通过移动磁头并读取每个图案行获得的信号A，B，C和D，表示信号A /（A + B）的数据SA和表示信号C /（C + D）。通过在每个预定时间段内检测数据SC的偏移量，并且使用数据SA，数据SA + SC-偏移和数据SA-SC +偏移量使用相对于磁头的移动线性变化的每个部分，检测磁头的位置。

16. 发明授权

US5561568A Method and apparatus for fast positioning a head of a recording device 失效
公开(公告)号：US5561568A
公开(公告)日：1996-10-01
申请号：US962445
申请日：1992-10-16
申请人： Masashi Kisaka
发明人： Masashi Kisaka
IPC分类号： G11B21/10 , G05B13/02 , G05B19/19 , G11B21/08 , G11B5/596
CPC分类号： G11B21/085 , G05B13/024 , G05B19/19 , G05B2219/41004 , G05B2219/41367 , G05B2219/41434 , G05B2219/42104
摘要： To achieve fast positioning of a head by determining an initial value dynamically from state variables of a system at a switching time of control modes. In a recording device having a head, a recording media including a plurality of tracks accessed by the head, and a motor for moving the head, in order to position the head to a target track by switching control modes and outputting a control signal value u(n) to drive the motor in response to an input signal value y(n) representing a difference between a current position of the head and the target track, the gain of a control system having the input and control signal values as state variables is changed only at a mode switching time.

17. 发明授权

US5404254A Method and apparatus for controlling head position 失效
标题翻译：控制头部位置的方法和装置
公开(公告)号：US5404254A
公开(公告)日：1995-04-04
申请号：US127704
申请日：1993-09-27
申请人： Masashi Kisaka
发明人： Masashi Kisaka
IPC分类号： G11B21/10 , G11B5/55 , G11B21/08 , G11B7/09
CPC分类号： G11B5/5547 , G11B21/083
摘要： Disclosed is a rotating memory device or disk drive which includes a rotating media having tracks thereon and an actuator arm which includes a head for writing representations of data to the track on the rotating memory. The head also reads representations of data from the track of the rotating memory. The head is attached to the actuator arm. The actuator arm is used to move the head to a selected position over the rotating memory such as over the track in the rotating memory. Also disclosed is an apparatus that corrects for errors of low frequency. The device includes circuitry for producing a position error signal for integrating the position error signal to produce a control signal that is used to correct for any errors in the position of the head. The device also includes circuitry for detecting cross track head speed per sector which produces a signal used to control the integration of the position error signal.
摘要翻译：公开了一种旋转存储装置或磁盘驱动器，其包括其上具有轨道的旋转介质和致动器臂，该致动臂包括用于将数据写入旋转存储器上的轨道的头部。头部还读取来自旋转存储器的轨迹的数据表示。头部连接到执行器臂。致动器臂用于将头部移动到旋转存储器上的选定位置，例如在旋转存储器中的轨道上。还公开了一种校正低频误差的装置。该装置包括用于产生位置误差信号的电路，用于积分位置误差信号以产生用于校正头部位置中的任何误差的控制信号。该装置还包括用于检测每扇区的交叉轨道头速度的电路，其产生用于控制位置误差信号的积分的信号。

18. 发明授权

US07724464B2 Recording disk and disk drive 有权
标题翻译：录制磁盘和磁盘驱动器
公开(公告)号：US07724464B2
公开(公告)日：2010-05-25
申请号：US12008426
申请日：2008-01-10
申请人： Masashi Kisaka , Fuminori Sai , Naoyuki Minami , Sadamichi Sone
发明人： Masashi Kisaka , Fuminori Sai , Naoyuki Minami , Sadamichi Sone
IPC分类号： G11B5/58
CPC分类号： G11B5/59688 , G11B5/5547 , G11B5/59633
摘要： Embodiments of the present invention provide a recording disk capable of curtailing the amount of servo data to be stored thereon, and a disk drive. According to one embodiment, servo data area sets each of a first servo data area and plural second servo data areas arranged in that order in a read direction HR are arranged successively on each of tracks of a magnetic disk. Stored in a second sector data section included in the second servo data area is data representing a distance in the read direction HR from the position of the first servo data area to that of the same second servo data area. The amount of data stored in the second sector data section is less than that of data stored in a first sector data section included in the first servo data area.
摘要翻译：本发明的实施例提供一种能够减少要存储在其上的伺服数据量的记录盘和磁盘驱动器。根据一个实施例，伺服数据区域依次布置在磁盘的每个轨道上，依次布置在读取方向HR上按顺序布置的第一伺服数据区域和多个第二伺服数据区域中的每一个。存储在第二伺服数据区域中的第二扇区数据部分中的是表示从第一伺服数据区域的位置到同一第二伺服数据区域的读取方向HR的距离的数据。存储在第二扇区数据部分中的数据量小于存储在包括在第一伺服数据区域中的第一扇区数据部分中的数据量。

19. 发明申请

US20090296265A1 HARD-DISK DRIVE 有权
标题翻译：硬盘驱动器
公开(公告)号：US20090296265A1
公开(公告)日：2009-12-03
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
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。

20. 发明申请

US20080055766A1 Magnetic disk drive 失效
标题翻译：磁盘驱动器
公开(公告)号：US20080055766A1
公开(公告)日：2008-03-06
申请号：US11811032
申请日：2007-06-07
申请人： Masashi Kisaka
发明人： Masashi Kisaka
IPC分类号： G11B5/588
CPC分类号： G11B5/59633 , G11B5/5582
摘要： Embodiments in accordance with the present invention provide a magnetic disk drive capable of alleviating an adverse effect of vibrations inherent to a housing on positioning control, reducing the adverse effect over other frequency range, and stabilizing the positioning control. In a magnetic disk drive according to embodiments of the present invention, a position control circuit that controls the position of a magnetic head produces a signal, based on which the position of the magnetic head is controlled, according to positional information read by the magnetic head. The signal is transmitted via a multi-rate filter circuit that decreases a sensitivity function relevant to a predetermined object frequency by a first predetermined gain, and suppresses an increase in the sensitivity function relevant to frequencies lower than the object frequency to a second predetermined gain.
摘要翻译：根据本发明的实施例提供了一种能够减轻外壳固有的振动对定位控制的不利影响的磁盘驱动器，减少了对其它频率范围的不利影响，并且稳定了定位控制。在根据本发明的实施例的磁盘驱动器中，控制磁头的位置的位置控制电路根据由磁头读取的位置信息产生信号，基于该信号控制磁头的位置。信号通过多速率滤波器电路发送，该多速率滤波器电路将与预定目标频率相关的灵敏度功能降低第一预定增益，并且抑制与低于目标频率的频率相关的灵敏度函数增加到第二预定增益。

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