发明授权
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
- 专利标题： Apparatus for assisting write operation using high frequency magnetic field in disk drive
- 专利标题（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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申请号： US12196628申请日： 2008-08-22
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公开(公告)号： US07791829B2公开(公告)日： 2010-09-07
- 发明人: Akihiko Takeo , Junichi Akiyama , Kenichiro Yamada , Hitoshi Iwasaki , Masayuki Takagishi , Tomomi Funayama , Masahiro Takashita , Mariko Shimizu
- 申请人： Akihiko Takeo , Junichi Akiyama , Kenichiro Yamada , Hitoshi Iwasaki , Masayuki Takagishi , Tomomi Funayama , Masahiro Takashita , Mariko Shimizu
- 申请人地址： JP Tokyo
- 专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人地址： JP Tokyo
- 代理机构： Knobbe, Martens, Olson & Bear LLP
- 优先权： JP2007-230475 20070905
- 主分类号： G11B5/02
- IPC分类号： G11B5/02
摘要：
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.
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