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21. 发明申请

US20070058280A1 Disk drive with heater for slider and control method thereof 失效
标题翻译：带滑块加热器的磁盘驱动器及其控制方法
公开(公告)号：US20070058280A1
公开(公告)日：2007-03-15
申请号：US11521737
申请日：2006-09-14
申请人： Toshiaki Wada , Kazuyuki Ishibashi , Kazunari Tsuchimoto , Hideki Ohzeki
发明人： Toshiaki Wada , Kazuyuki Ishibashi , Kazunari Tsuchimoto , Hideki Ohzeki
IPC分类号： G11B21/02
CPC分类号： G11B5/54 , G11B5/6005 , G11B5/6064
摘要： Embodiments of the invention allow a heater to reduce the clearance between a head element section and the magnetic section while reducing the risk of collision between the head element section and the magnetic disk during load/unload. In one embodiment, an HDD judges whether a heater is ON or OFF after the load process is started. If the heater is found set to ON, the HDD sets the heater to OFF. With the heater kept OFF, the HDD starts the actuator pivoting. If the heater is found set to OFF, the HDD moves the actuator from the parking position to the magnetic disk with the heater kept OFF. Upon completion of the load process, the HDD goes to the subsequent process. Since the heater is OFF during load, the risk of collision between the head element section and the magnetic disk is reduced.
摘要翻译：本发明的实施例允许加热器减小头元件部分和磁性部分之间的间隙，同时减少在装载/卸载期间头元件部分和磁盘之间的碰撞的风险。在一个实施例中，HDD在加载处理开始之后判断加热器是ON还是OFF。如果发现加热器设置为ON，则HDD将加热器设置为OFF。当加热器关闭时，HDD启动执行机构的转动。如果发现加热器设置为OFF，则HDD将致动器从停车位置移动到磁盘，加热器保持关闭状态。在完成加载过程后，HDD进入后续处理。由于在加载期间加热器为OFF，所以头元件部分和磁盘之间的碰撞风险降低。

22. 发明授权

US06339512B1 Disk-flutter servo control in rotating storage system with optimum disk thickness 有权
标题翻译：旋转存储系统中的磁盘颤动伺服控制，磁盘厚度最佳
公开(公告)号：US06339512B1
公开(公告)日：2002-01-15
申请号：US09276211
申请日：1999-03-25
申请人： S. M. Sri-Jayantha , Hien Dang , Arun Sharma , Kiyoshi Satoh , Tetsuo Ueda , Hideki Ohzeki , Nayouki Kagami , Kiochi Takeuchi
发明人： S. M. Sri-Jayantha , Hien Dang , Arun Sharma , Kiyoshi Satoh , Tetsuo Ueda , Hideki Ohzeki , Nayouki Kagami , Kiochi Takeuchi
IPC分类号： G11B5596
CPC分类号： G11B5/6005 , G11B5/59627 , G11B21/21
摘要： A hard disk has a servo loop and a rotating storage medium. The rotating storage medium has one or more significant flutter modes at frequencies below a zero cross frequency of a rejection transfer function of the servo loop. The effect of the forgoing is to allow the servo loop to better track a rotating medium that is subject to significant flutter. Peak filters with frequency bands that substantially overlap frequency bands of the significant flutter modes can also be added to the servo loop to further improve tracking. Multiple narrow band filters with frequency bands overlap can be used to cover the spectrum of a single flutter mode. Two lag-lead filters, the frequency responses of which overlap can be used to cover two adjacent significant flutter modes. At frequencies intermediate to the two adjacent flutter, modes, the lead caused by one filter, will be cancelled by the lag caused by the second.
摘要翻译：硬盘具有伺服回路和旋转存储介质。旋转存储介质在低于伺服环路的拒绝传递函数的零交叉频率的频率下具有一个或多个显着颤振模式。上述的效果是允许伺服回路更好地跟踪受到显着颤动的旋转介质。具有基本上与重要抖动模式的频带重叠的频带的峰值滤波器也可以被添加到伺服环路中以进一步改善跟踪。具有频带重叠的多个窄带滤波器可以用于覆盖单个颤振模式的频谱。两个滞后引线滤波器，其重叠的频率响应可用于覆盖两个相邻的显着颤振模式。在两个相邻颤振之间的频率中，模式，由一个滤波器引起的引线将被第二个引起的滞后所抵消。

23. 发明授权

US06189110B1 Disk device and data reassignment method 失效
标题翻译：磁盘设备和数据重新分配方法
公开(公告)号：US06189110B1
公开(公告)日：2001-02-13
申请号：US08958774
申请日：1997-10-27
申请人： Takahiro Saitoh , Akira Kibashi , Kenji Okada , Hideki Ohzeki
发明人： Takahiro Saitoh , Akira Kibashi , Kenji Okada , Hideki Ohzeki
IPC分类号： G06F1100
CPC分类号： G11B20/1883 , G11B2020/10916 , G11B2220/20
摘要： A disk device and a method are described for reassigning data areas (e.g. sectors) which minimize the reduction in the data transfer rate when alternate data areas are used to replace defective areas. The disk device uses a plurality of data zones with spare areas allocated in each data zone. An alternate area is allocated (a) in the spare area within the data zone where the error occurs and (b) at an angular position offset more than a predetermined angle from a position of the data in which the error occurs. The offset angle allows the device time to seek to the alternate area, read the alternate area and seek back to the area following the defective area within a single rotation of the disk.
摘要翻译：描述了一种磁盘装置和方法，用于重新分配使用替代数据区域来替换缺陷区域时最小化数据传输速率降低的数据区域（例如扇区）。磁盘设备使用多个数据区，在每个数据区中分配备用区。在发生错误的数据区域内的备用区域中分配一个备用区域（a），并且（b）在距发生错误的数据的位置偏移大于预定角度的角位置处。偏移角允许设备时间寻找到交替区域，读取备用区域并在盘的单次旋转内追溯到缺陷区域之后的区域。

24. 发明授权

US08125729B2 Disk drive and error-recovery processing method 有权
标题翻译：磁盘驱动器和错误恢复处理方法
公开(公告)号：US08125729B2
公开(公告)日：2012-02-28
申请号：US12790648
申请日：2010-05-28
申请人： Hideki Ohzeki , Kazuyuki Ishibashi , Yoshikatsu Fujii
发明人： Hideki Ohzeki , Kazuyuki Ishibashi , Yoshikatsu Fujii
IPC分类号： G11B5/596
CPC分类号： G11B5/5526
摘要： A disk drive. The disk drive includes a head, a motion mechanism, and a controller. The head is configured to access a disk configured to store data. The motion mechanism is configured to move the head. The controller is configured to determine a seek direction when an error occurred; and, the controller is configured to repeat a seek as a repeat seek to a target radial position from a direction opposite to the seek direction in an error-recovery process for the error which occurred in the seek in which the head moved to the target radial position.
摘要翻译：磁盘驱动器磁盘驱动器包括磁头，运动机构和控制器。磁头配置为访问配置为存储数据的磁盘。运动机构配置为移动头部。控制器被配置为当发生错误时确定寻道方向; 并且，所述控制器被配置为在所述头部移动到所述目标径向的所述寻找中的错误的误差恢复处理中，从与所述搜索方向相反的方向重复寻道到目标径向位置位置。

25. 发明申请

US20080030890A1 Method of writing pattern on magnetic disk and device therfor 失效
标题翻译：在磁盘上写图案的方法和装置
公开(公告)号：US20080030890A1
公开(公告)日：2008-02-07
申请号：US11880148
申请日：2007-07-20
申请人： Hideki Ohzeki , Kazuyuki Ishibashi , Shunichiroh Ohta , Tatsuo Takagi
发明人： Hideki Ohzeki , Kazuyuki Ishibashi , Shunichiroh Ohta , Tatsuo Takagi
IPC分类号： G11B5/588
CPC分类号： G11B5/59644
摘要： Embodiments of the present invention provide accurate pitch control of a servo write track. A Self-Servo-Write (SSW) according to an embodiment of the present invention determines a reference APC by reading a mark formed on the recording surface corresponding to the propagation head prior to starting the product servo pattern writing. The accurate size of the mark in the radial direction is known previously. The reference APC is for determining the track pitch, and by using the mark with the determined size, the product servo patterns can be written with a desired and accurate track pitch.
摘要翻译：本发明的实施例提供伺服写入磁道的精确的音调控制。根据本发明的实施例的自伺服写入（SSW）通过在开始产品伺服模式写入之前读取与传播头对应的记录表面上形成的标记来确定参考APC。标记在径向方向上的精确尺寸是先前已知的。参考APC用于确定轨道间距，并且通过使用具有确定尺寸的标记，可以以期望和准确的轨道间距来写入产品伺服模式。

26. 发明授权

US06700730B1 Method of using an integral parameter for correct placement of a read/write head 失效
标题翻译：使用积分参数来正确放置读/写头的方法
公开(公告)号：US06700730B1
公开(公告)日：2004-03-02
申请号：US09856767
申请日：2001-07-16
申请人： Hideki Ohzeki , Kenji Okada , Koichi Takeuchi
发明人： Hideki Ohzeki , Kenji Okada , Koichi Takeuchi
IPC分类号： G11B5596
CPC分类号： G11B21/085
摘要： To provide a disk drive, a manufacturing method thereof, and a disk-drive controller which are capable of improving yield without increasing costs so significantly. When track-following control is performed, HDC detects the current position of a read/write head, based on the reproduced output of a servo sector from a channel unit, and makes a calculation of servo data by employing both an integral parameter corresponding to a target track to be read onto a RAM and the detected current position of the read/write head.
摘要翻译：提供能够在不显着增加成本的情况下提高产量的磁盘驱动器，其制造方法和磁盘驱动控制器。当执行跟踪跟踪控制时，HDC根据来自信道单元的伺服扇区的再现输出来检测读/写头的当前位置，并且通过采用对应于目标轨迹被读取到RAM和读/写头的检测到的当前位置。

27. 发明授权

US06597530B2 Method and apparatus for disk drive seek control 失效
公开(公告)号：US06597530B2
公开(公告)日：2003-07-22
申请号：US09935272
申请日：2001-08-22
申请人： Hideo Asano , Kenji Okada , Tetsuo Ueda , Koichi Arai , Hideki Ohzeki
发明人： Hideo Asano , Kenji Okada , Tetsuo Ueda , Koichi Arai , Hideki Ohzeki
IPC分类号： G11B5596
CPC分类号： G11B5/5547
摘要： A disk drive seek control system device to reduce track pitch. When data is recorded, an offset value is added to the position of a read head element along the width of a track corresponding to an offset &Dgr;w between the read head element and a write head element. The value of the offset depends on the yaw angle &thgr; of the head. When data is read, the position of the read head element is chosen to be either the position of the write head element during write operations, or the midpoint between the position of the write head element and the read head element during write operations, or the center of a track.

28. 发明授权

US6084733A Storage device and error recovery method executing a plurality of error recovery routines based on error type 失效
标题翻译：存储设备和错误恢复方法基于错误类型执行多个错误恢复例程
公开(公告)号：US6084733A
公开(公告)日：2000-07-04
申请号：US958605
申请日：1997-10-27
申请人： Hideki Ohzeki , Akira Kibashi , Hiromi Nishimiya , Takahiro Saitoh
发明人： Hideki Ohzeki , Akira Kibashi , Hiromi Nishimiya , Takahiro Saitoh
IPC分类号： G11B19/04 , G11B20/18 , G11B5/09 , G11B3/90
CPC分类号： G11B19/04 , G11B20/18 , G11B20/1816
摘要： A storage device is described which has a plurality of different error recovery routines which are are divided into groups. When an error occurs, specific routines are selected from the groups in accordance with the error type. The selected routines are executed in order. By preferentially executing the selected routines corresponding to the error type, the error recovery rate in the early stages of the error recovery procedure is enhanced.
摘要翻译：描述了具有被分成组的多个不同错误恢复例程的存储装置。当发生错误时，根据错误类型从组中选择特定的例程。选择的例程按顺序执行。通过优先执行对应于错误类型的选择例程，提高了错误恢复过程早期的错误恢复率。

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