发明授权
- 专利标题: Disk drive writer with active reflection cancellation
- 专利标题(中): 具有主动反射取消的磁盘驱动器写入器
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申请号: US10219940申请日: 2002-08-15
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公开(公告)号: US06879456B2公开(公告)日: 2005-04-12
- 发明人: John D. Leighton , Scott M. O'Brien , Robert J. Wimmer , Nameeta Krenz , Carl F. Elliott , Michael J. O'Brien , Cameron C. Rabe
- 申请人: John D. Leighton , Scott M. O'Brien , Robert J. Wimmer , Nameeta Krenz , Carl F. Elliott , Michael J. O'Brien , Cameron C. Rabe
- 申请人地址: US PA Allentown
- 专利权人: Agere Systems Inc.
- 当前专利权人: Agere Systems Inc.
- 当前专利权人地址: US PA Allentown
- 代理机构: Kinney & Lange, P.A.
- 主分类号: G11B5/09
- IPC分类号: G11B5/09 ; G11B5/012 ; G11B5/02
摘要:
A write driver circuit selectively provides a write current through a write head in first and second opposite directions. The write driver circuit is connected to the write head through an interconnect. The write driver circuit provides an incident write current signal through the interconnect to the write head, and also provides a reflection cancellation signal through the interconnect to the write head. In an exemplary embodiment, the incident write current signal is provided by providing an incident voltage signal across the write head, and the reflection cancellation signal is provided by providing a reflection cancellation voltage signal across the write head. In an exemplary embodiment, the reflection cancellation signal is a delayed and filtered version of the incident write current signal that cancels a reflected signal that is reflected at the interface between the interconnect and the write head due to impedance mismatching.
公开/授权文献
- US20040032682A1 Disk drive writer with active reflection cancellation 公开/授权日:2004-02-19