发明授权
- 专利标题： Track dependent variable level qualification pulse detector
- 专利标题（中）： 轨道相关变量级鉴定脉冲检测器
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申请号： US913776申请日： 1992-07-14
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公开(公告)号： US5287227A公开(公告)日： 1994-02-15
- 发明人: Robert D. Cronch , Larry J. Koudele , Stephen R. Genheimer
- 申请人： Robert D. Cronch , Larry J. Koudele , Stephen R. Genheimer
- 申请人地址： CA Scotts Valley
- 专利权人： Seagate Technology, Inc.
- 当前专利权人： Seagate Technology, Inc.
- 当前专利权人地址： CA Scotts Valley
- 主分类号： G11B19/04
- IPC分类号： G11B19/04 ; G11B20/10 ; G11B20/18 ; G11B27/36 ; G11B5/09
摘要：
A pulse qualification apparatus and method provides for qualifying signal pulses from a raw data signal by comparison to a variable qualification level. Pulse qualification is done on a read signal developed by moving a magnetic transducer relative to addressable portions of a magnetic disk. A qualification level generator circuit generates a qualification level signal which varies in value depending upon the addressed portion of the magnetic disk. A threshold detector is used in qualifying pulses from a transducer read signal by comparison to the qualification level signal to generate an encoded pulse signal representing occurrences of qualifying pulses.
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