Title:
HEAD DRIVE CONTROLLER, MAGNETIC DISK UNIT AND HEAD DRIVE CONTROL METHOD
Document Type and Number:
Japanese Patent JP2015038785
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a head drive controller capable of achieving a high-frequency assist recording at a high transfer rate by enabling appropriate oscillation of STO using a driving method to duplicate pulse-like signal components.SOLUTION: A head amplifier IC 11 supplies a write signal and a drive signal of spin torque oscillator to a magnetic head 10 having a spin torque oscillator when recording a data. The head amplifier IC 11 is configured to reduce the rise time of a pulse component when generating a drive signal 110 in which a steady component and the pulse component are overlapped with each other.
Inventors:
EZAWA TORU
YANO KOJI
SHIMOMURA KAZUHITO
YANO KOJI
SHIMOMURA KAZUHITO
Application Number:
JP2009269148A
Publication Date:
February 26, 2015
Filing Date:
November 26, 2009
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
G11B5/09; G11B5/02; G11B5/31; H01L29/82; H01L43/08
Domestic Patent References:
| JP2009070541A | 2009-04-02 |
Attorney, Agent or Firm:
Takehiko Suzue
Masatoshi Kurata
Kono 哲
Makoto Nakamura
Toshihiro Fukuhara
Peak Takashi
Toshiro Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Yukinaga Yasujiro
Naoki Kono
Sunagawa 克
Hiroshi Katsumura
Masaji Kawai
Tatsushi Sato
Okada Kishi
Mihoko Horiuchi
Masanori Takeuchi
Ichihara Takuzo
Hajime Yamashita
Masatoshi Kurata
Kono 哲
Makoto Nakamura
Toshihiro Fukuhara
Peak Takashi
Toshiro Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Yukinaga Yasujiro
Naoki Kono
Sunagawa 克
Hiroshi Katsumura
Masaji Kawai
Tatsushi Sato
Okada Kishi
Mihoko Horiuchi
Masanori Takeuchi
Ichihara Takuzo
Hajime Yamashita
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