发明申请
- 专利标题: Disk drive and control method thereof
- 专利标题(中): 磁盘驱动器及其控制方法
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申请号: US11789866申请日: 2007-04-25
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公开(公告)号: US20080247079A1公开(公告)日: 2008-10-09
- 发明人: Noriaki Satoh , Toyomi Ohsawa , Yumi Nagano , Kouji Miyake , Yoshiaki Uji , Masayuki Kurita
- 申请人: Noriaki Satoh , Toyomi Ohsawa , Yumi Nagano , Kouji Miyake , Yoshiaki Uji , Masayuki Kurita
- 申请人地址: NL Amsterdam
- 专利权人: Hitachi Global Storage Technologies Netherlands B.V.
- 当前专利权人: Hitachi Global Storage Technologies Netherlands B.V.
- 当前专利权人地址: NL Amsterdam
- 优先权: JP2006-120688 20070403
- 主分类号: G11B21/02
- IPC分类号: G11B21/02
摘要:
Embodiments in accordance with the present invention reduce the number of errors caused by the aged deterioration of a heater for adjusting the clearance between a head and a disk. According to one embodiment, a thermal fly height control (TFC) controller executes the measurement of a resistance value of a heater in a predetermined timing. The TFC controller judges whether or not the measured resistance value falls within a predetermined reference range. If the measured resistance value falls within the reference range, the processing ends without performing any other processing. If the measured resistance value goes out of the reference range, the TFC controller executes error handling processing in response to a resistance failure. As one of the error handling processing, the TFC controller notifies the host that the abnormality (resistance failure) has been detected in the resistance value of the TFC heater.
公开/授权文献
- US07864474B2 Disk drive and control method thereof 公开/授权日:2011-01-04