发明授权
US07889447B2 Readback signal-based head-disc contact detection using AM/FM demodulation
有权
采用AM / FM解调技术回读基于信号的头盘接触检测
- 专利标题： Readback signal-based head-disc contact detection using AM/FM demodulation
- 专利标题（中）： 采用AM / FM解调技术回读基于信号的头盘接触检测
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申请号： US12353564申请日： 2009-01-14
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公开(公告)号： US07889447B2公开(公告)日： 2011-02-15
- 发明人: Juil Lee , Michael Ting , Mark David Bedillion
- 申请人： Juil Lee , Michael Ting , Mark David Bedillion
- 申请人地址： US CA Scotts Valley
- 专利权人： Seagate Technology LLC
- 当前专利权人： Seagate Technology LLC
- 当前专利权人地址： US CA Scotts Valley
- 代理机构： Pietragallo Gordon Alfano Bosick & Raspanti, LLP
- 代理商 Robert P. Lenart, Esq.
- 主分类号： G11B20/06
- IPC分类号： G11B20/06
摘要：
A method includes: producing a readback signal using a recording head positioned adjacent to a recording medium, amplitude demodulating the readback signal to produce an amplitude demodulated signal, frequency demodulating the readback signal to produce a frequency demodulated signal, and using the amplitude demodulated signal and the frequency demodulated signal to determine contact of the recording head with the recording medium. An apparatus that can be used to implement the method is also provided.