Title:
磁気ディスク装置及び磁気ヘッド駆動制御方法
Document Type and Number:
Japanese Patent JP4649519
Kind Code:
B2
Abstract:
According to one embodiment, a disk drive has a magnetic disk and a magnetic head having a spin-torque oscillator. The disk drive further has a head amplifier IC configured to supply a write signal and a drive signal to the magnetic head. The write signal corresponds to write data. The drive signal is supplied to generate a high-frequency magnetic field. The head amplifier IC continuously supplies a drive signal of normal level to the spin-torque oscillator, and supplies a drive signal of high level higher than the normal level, only for a prescribed time after the polarity inversion of the write signal.
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Inventors:
Yano Koji
Kazuto Shimomura
Akihiko Takeo
Masayuki Takagishi
Kenichiro Yamada
Kazuto Shimomura
Akihiko Takeo
Masayuki Takagishi
Kenichiro Yamada
Application Number:
JP2009060936A
Publication Date:
March 09, 2011
Filing Date:
March 13, 2009
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
G11B5/02; G11B5/31
Domestic Patent References:
| JP2008305486A | ||||
| JP2008123669A |
Foreign References:
| US20090052095 |
Attorney, Agent or Firm:
Kurata Masatoshi
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Tetsuya Kazama
Katsumura Hiro
Shoji Kawai
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori
Takuzo Ichihara
Yamashita Gen
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Tetsuya Kazama
Katsumura Hiro
Shoji Kawai
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori
Takuzo Ichihara
Yamashita Gen