发明授权
US08611035B1 Capacitance sensor for determining a distance between a head and a magnetic storage medium
有权
用于确定头部和磁性存储介质之间的距离的电容传感器
- 专利标题: Capacitance sensor for determining a distance between a head and a magnetic storage medium
- 专利标题(中): 用于确定头部和磁性存储介质之间的距离的电容传感器
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申请号: US13367334申请日: 2012-02-06
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公开(公告)号: US08611035B1公开(公告)日: 2013-12-17
- 发明人: Sateeshchandra S. Bajikar , Minh Q. Tran
- 申请人: Sateeshchandra S. Bajikar , Minh Q. Tran
- 申请人地址: US CA Fremont
- 专利权人: Western Digital (Fremont), LLC
- 当前专利权人: Western Digital (Fremont), LLC
- 当前专利权人地址: US CA Fremont
- 主分类号: G11B5/56
- IPC分类号: G11B5/56
摘要:
A proximity sensor is described including a capacitor formed by a first conductive element and a second conductive element. The first conductive element and the second conductive element are situated at a magnetic head, a slider that connects to the magnetic head, a reader of the magnetic head, a writer of the magnetic head, a reader shield of the magnetic head, or a writer shield of the magnetic head. A capacitance and a fringing electric field are formed by the capacitor when there is a voltage difference between the first conductive element and the second conductive element. The capacitor is situated such that the fringing electric field changes with a positioning change of a magnetic storage medium with respect to at least one of the first conductive element and the second conductive element. The capacitor is also situated such that the capacitance changes with the fringing electric field change.