发明授权
- 专利标题： Magnetic disk drive and microwave assisted recording method
- 专利标题（中）： 磁盘驱动器和微波辅助记录方法
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申请号： US13402957申请日： 2012-02-23
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公开(公告)号： US08643967B2公开(公告)日： 2014-02-04
- 发明人: Hiroyuki Katada , Yasutaka Nishida , Masato Shiimoto
- 申请人： Hiroyuki Katada , Yasutaka Nishida , Masato Shiimoto
- 申请人地址： JP Tokyo
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Antonelli, Terry, Stout & Kraus, LLP.
- 优先权： JP2011-186450 20110829
- 主分类号： G11B27/36
- IPC分类号： G11B27/36 ; G11B5/09
摘要：
The present invention enhances reliability by correcting a write error due to unstable oscillation of a spin torque oscillator. In the present invention, a resistance value of a spin torque oscillator is monitored to detect that oscillation becomes unstable during recording. When a measured resistance value is out of a predefined normal range, information for which the recording operation is already performed is rewritten.
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