Invention Grant
US08027118B2 Method and apparatus for controlling head with spin-torque oscillator in a disk drive
有权
用于在磁盘驱动器中用自旋扭矩振荡器控制磁头的方法和装置
- Patent Title: Method and apparatus for controlling head with spin-torque oscillator in a disk drive
- Patent Title (中): 用于在磁盘驱动器中用自旋扭矩振荡器控制磁头的方法和装置
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Application No.: US12843723Application Date: 2010-07-26
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Publication No.: US08027118B2Publication Date: 2011-09-27
- Inventor: Toru Ezawa , Shuichi Kojima , Masahide Kanegae , Kenichiro Yamada , Katsuhiko Koui , Masayuki Takagishi
- Applicant: Toru Ezawa , Shuichi Kojima , Masahide Kanegae , Kenichiro Yamada , Katsuhiko Koui , Masayuki Takagishi
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: Knobbe, Martens, Olson & Bear LLP
- Priority: JP2009-270601 20091127
- Main IPC: G11B21/02
- IPC: G11B21/02
Abstract:
According to one embodiment, an apparatus for controlling a head includes a transmitting module and a controller. The transmitting module is configured to transmit a write signal to a magnetic head having a spin torque oscillator at the time of recording data. The controller is configured to supply a drive signal that has a level higher than the ordinary level for a prescribed effective time, to the spin-torque oscillator in response to an input write gate that instructs the recording of data. During a period other than prescribed effective time, the controller supplies a drive signal having the ordinary level to the spin-torque oscillator.
Public/Granted literature
- US20110128648A1 METHOD AND APPARATUS FOR CONTROLLING HEAD WITH SPIN-TORQUE OSCILLATOR IN A DISK DRIVE Public/Granted day:2011-06-02
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