Invention Grant
US08085489B2 Method for writing servo patterns and disk drive including a controller for writing servo patterns according to the method
有权
用于写入伺服模式和磁盘驱动器的方法，包括用于根据该方法写入伺服模式的控制器
- Patent Title: Method for writing servo patterns and disk drive including a controller for writing servo patterns according to the method
- Patent Title (中): 用于写入伺服模式和磁盘驱动器的方法，包括用于根据该方法写入伺服模式的控制器
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Application No.: US12538039Application Date: 2009-08-07
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Publication No.: US08085489B2Publication Date: 2011-12-27
- Inventor: Ryohheita Hattori , Masaki Yoshioka , Suthasun Thambirajah , Minoru Hashimoto , Kei Yasuna
- Applicant: Ryohheita Hattori , Masaki Yoshioka , Suthasun Thambirajah , Minoru Hashimoto , Kei Yasuna
- Applicant Address: NL Amsterdam
- Assignee: Hitachi Global Storage Technologies, Netherlands B.V.
- Current Assignee: Hitachi Global Storage Technologies, Netherlands B.V.
- Current Assignee Address: NL Amsterdam
- Priority: JP2008-204899 20080807
- Main IPC: G11B21/02
- IPC: G11B21/02 ; G11B5/596
Abstract:
A method for writing servo patterns onto a disk of a disk drive. The method includes providing a plurality of different drive currents for an actuator while pushing the actuator into a crash stop defining a swing range of the actuator. The method also includes performing a write operation for at least one of the plurality of different drive currents to write a plurality of servo pattern tracks including a plurality of separate servo pattern sectors. Furthermore, the method includes gradually changing a drive current of the plurality of different drive currents while pushing the actuator into the crash stop so as to gradually move a read element in searching for a servo pattern track to a radial position different from a radial position of the write element. Moreover, the method includes positioning the read element at one of the plurality of servo pattern tracks.
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