Invention Grant
US07791829B2 Apparatus for assisting write operation using high frequency magnetic field in disk drive
有权
用于通过磁盘驱动器中的高频磁场辅助写入操作的装置
- Patent Title: Apparatus for assisting write operation using high frequency magnetic field in disk drive
- Patent Title (中): 用于通过磁盘驱动器中的高频磁场辅助写入操作的装置
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Application No.: US12196628Application Date: 2008-08-22
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Publication No.: US07791829B2Publication Date: 2010-09-07
- Inventor: Akihiko Takeo , Junichi Akiyama , Kenichiro Yamada , Hitoshi Iwasaki , Masayuki Takagishi , Tomomi Funayama , Masahiro Takashita , Mariko Shimizu
- Applicant: Akihiko Takeo , Junichi Akiyama , Kenichiro Yamada , Hitoshi Iwasaki , Masayuki Takagishi , Tomomi Funayama , Masahiro Takashita , Mariko Shimizu
- 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: JP2007-230475 20070905
- Main IPC: G11B5/02
- IPC: G11B5/02
Abstract:
According to one embodiment, a disk drive having a spin torque oscillator and designed to perform high frequency assisted writing. The disk drive has a magnetic disk, a magnetic head, a coil, and a drive current controller. The drive current controller controls a drive current to supply to the spin torque oscillator. To record data magnetically in the disk, the drive current controller supplies to the spin torque oscillator the drive current that changes in synchronism with the polarity inversion of the recording current supplied to the coil, which excites the recording magnetic pole of the magnetic head.
Public/Granted literature
- US20090059417A1 APPARATUS FOR ASSISTING WRITE OPERATION USING HIGH FREQUENCY MAGNETIC FIELD IN DISK DRIVE Public/Granted day:2009-03-05
Information query
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