公开(公告)号：US07426086B2

公开(公告)日：2008-09-16

申请号：US11509117

申请日：2006-08-23

申请人： Atsushi Tobari ,  Masahide Yamasaki ,  Masaomi Ikeda ,  Junzou Noda

发明人： Atsushi Tobari ,  Masahide Yamasaki ,  Masaomi Ikeda ,  Junzou Noda

IPC分类号： G11B5/09 ,  G11B27/36

CPC分类号： G11B5/59655 ,  G11B5/59627 ,  G11B5/59688 ,  G11B5/59694 ,  G11B19/04 ,  G11B27/36 ,  G11B2220/20

摘要： Embodiments of the invention prevent offtrack write that will be caused due to a head vibration in a storage device. In one embodiment, a hard disk drive (HDD) judges approval/disapproval of write of user data to a magnetic disk by using a read signal for user data in addition to servo data in write processing. Thus, a head vibration which cannot be precisely detected based on servo data is detected to prevent off-track write. More specifically, the HDD acquires a read back signal amplitude of a read element with respect to a user data sector within adjacent servo data during a write access phase, and detects a vibration from a maximum value MAX and a minimum value MIN of the read back signal amplitude to judge data write approval/disapproval.

摘要翻译： 本发明的实施例防止由于存储装置中的头部振动而引起的后掠写入。 在一个实施例中，除了在写入处理中的伺服数据之外，硬盘驱动器（HDD）通过使用用于用户数据的读取信号来判断/不批准写入用户数据到磁盘。 因此，检测到基于伺服数据不能精确检测的头部振动，以防止偏离写入。 更具体地，HDD在写访问阶段期间相对于相邻伺服数据中的用户数据扇区获取读元素的读回信号幅度，并从读回的最大值MAX和最小值MIN检测振动 信号幅度判断数据写入批准/不批准。

公开(公告)号：US20070183081A1

公开(公告)日：2007-08-09

申请号：US11650332

申请日：2007-01-05

申请人： Junzou Noda ,  Shingo Hattori ,  Toshiaki Satoh

发明人： Junzou Noda ,  Shingo Hattori ,  Toshiaki Satoh

IPC分类号： G11B5/596

CPC分类号： G11B5/596 ,  G11B20/182 ,  G11B20/1879 ,  G11B27/36 ,  G11B2020/1823 ,  G11B2220/2516

摘要： Embodiments in accordance with the present invention increase the possibility that a servo track in which servo data is defective may be detected, greatly decreasing the possibility that a write error may occur during use by a user. According to one embodiment of the present invention, a defective area management method for a data storage device is provided. The data storage device comprises a head in which positions of read and write elements differ from each other in the radial direction of a disk. A defective area management method performs positioning of the head by reading out servo data written on the disk using the read element. The defective area management method comprises the steps of performing data write processing by use of the write element with the read element being positioned at a target position at which normal data reading is performed; and registering areas, as an error area, in a data track in which normal data writing is performed using a servo track including the target position if a predetermined error occurs in the data write processing.

摘要翻译： 根据本发明的实施例增加了可以检测到其中伺服数据有缺陷的伺服轨迹的可能性，大大降低了在用户使用期间可能发生写错误的可能性。 根据本发明的一个实施例，提供了一种用于数据存储装置的缺陷区域管理方法。 数据存储装置包括其中读取和写入元件的位置在盘的径向彼此不同的头部。 缺陷区域管理方法通过使用读取的元素读出写在盘上的伺服数据来执行头的定位。 缺陷区域管理方法包括以下步骤：通过使用写入元件执行数据写入处理，读取元件位于进行正常数据读取的目标位置; 以及如果在数据写入处理中发生预定的错误，则在使用包括目标位置的伺服轨迹执行正常数据写入的数据轨道中登记区域作为错误区域。

公开(公告)号：US20070047134A1

公开(公告)日：2007-03-01

申请号：US11509117

申请日：2006-08-23

申请人： Atsushi Tobari ,  Masahide Yamasaki ,  Masaomi Ikeda ,  Junzou Noda

发明人： Atsushi Tobari ,  Masahide Yamasaki ,  Masaomi Ikeda ,  Junzou Noda

IPC分类号： G11B5/596 ,  G11B5/09

CPC分类号： G11B5/59655 ,  G11B5/59627 ,  G11B5/59688 ,  G11B5/59694 ,  G11B19/04 ,  G11B27/36 ,  G11B2220/20

摘要： Embodiments of the invention prevent offtrack write that will be caused due to a head vibration in a storage device. In one embodiment, a hard disk drive (HDD) judges approval/disapproval of write of user data to a magnetic disk by using a read signal for user data in addition to servo data in write processing. Thus, a head vibration which cannot be precisely detected based on servo data is detected to prevent off-track write. More specifically, the HDD acquires a read back signal amplitude of a read element with respect to a user data sector within adjacent servo data during a write access phase, and detects a vibration from a maximum value MAX and a minimum value MIN of the read back signal amplitude to judge data write approval/disapproval.

摘要翻译： 本发明的实施例防止由于存储装置中的头部振动而引起的后掠写入。 在一个实施例中，除了在写入处理中的伺服数据之外，硬盘驱动器（HDD）通过使用用于用户数据的读取信号来判断/不批准写入用户数据到磁盘。 因此，检测到基于伺服数据不能精确检测的头部振动，以防止偏离写入。 更具体地，HDD在写访问阶段期间相对于相邻伺服数据中的用户数据扇区获取读元素的读回信号幅度，并从读回的最大值MAX和最小值MIN检测振动 信号幅度判断数据写入批准/不批准。