Invention Grant
US07289284B2 Stray field detector, magnetic disk drive, and method of head escaping
失效
杂散场检测器，磁盘驱动器和头部逃逸方法
- Patent Title: Stray field detector, magnetic disk drive, and method of head escaping
- Patent Title (中): 杂散场检测器，磁盘驱动器和头部逃逸方法
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Application No.: US11195202Application Date: 2005-08-01
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Publication No.: US07289284B2Publication Date: 2007-10-30
- Inventor: Reiko Arai , Takehiko Hamaguchi , Atsushi Kikugawa , Hideaki Maeda , Liping Shen , Mikio Suzuki
- Applicant: Reiko Arai , Takehiko Hamaguchi , Atsushi Kikugawa , Hideaki Maeda , Liping Shen , Mikio Suzuki
- Applicant Address: NL Amsterdam
- Assignee: Hitachi Global Storage Technologies Netherlands B.V.
- Current Assignee: Hitachi Global Storage Technologies Netherlands B.V.
- Current Assignee Address: NL Amsterdam
- Agency: Townsend and Townsend and Crew LLP
- Agent Matthew Zieses
- Priority: JP2004-226319 20040803
- Main IPC: G11B5/02
- IPC: G11B5/02
Abstract:
Embodiments of the invention prevent demagnetization or degaussing of recorded magnetizations, even if a stray field is applied. In one embodiment, an output of a read head including a magneto-resistive effect element is inputted to a stray field detector through a DC amplifier and a DC filter. The stray field detector monitors dc components of the output from the read head, and escapes a head from above a magnetic recording medium.
Public/Granted literature
- US20060028747A1 Stray field detector, magnetic disk drive, and method of head escaping Public/Granted day:2006-02-09
Information query
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