发明授权
- 专利标题： Implementing magnetic defect classification using phase modulation
- 专利标题（中）： 使用相位调制实现磁缺陷分类
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申请号： US13277047申请日： 2011-10-19
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公开(公告)号： US08654464B2公开(公告)日： 2014-02-18
- 发明人: Richard Leo Galbraith , Weldon Mark Hanson , Martin Aureliano Hassner , Travis Roger Oenning , Satoshi Yamamoto
- 申请人： Richard Leo Galbraith , Weldon Mark Hanson , Martin Aureliano Hassner , Travis Roger Oenning , Satoshi Yamamoto
- 申请人地址： NL Amsterdam
- 专利权人： HGST Netherlands B.V.
- 当前专利权人： HGST Netherlands B.V.
- 当前专利权人地址： NL Amsterdam
- 代理商 Joan Pennington
- 主分类号： G11B5/02
- IPC分类号： G11B5/02
摘要：
A method, apparatus, and system are provided for implementing magnetic defect classification using phase modulation for hard disk drives. A magnetic media readback signal of a hard disk drive is processed to identify predefined phase modulation (PM) characteristics to implement magnetic defect classification of magnetic media bump and pit defects.