发明授权
US07046473B2 Method and apparatus for active fly height control with heating and electrical charge
有权
用加热和电荷进行主动飞行高度控制的方法和装置
- 专利标题: Method and apparatus for active fly height control with heating and electrical charge
- 专利标题(中): 用加热和电荷进行主动飞行高度控制的方法和装置
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申请号: US10941420申请日: 2004-09-14
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公开(公告)号: US07046473B2公开(公告)日: 2006-05-16
- 发明人: Yen Fu , Ellis T. Cha , Zhu Feng
- 申请人: Yen Fu , Ellis T. Cha , Zhu Feng
- 申请人地址: HK Shatin
- 专利权人: SAE Magnetics (H.K.) Ltd.
- 当前专利权人: SAE Magnetics (H.K.) Ltd.
- 当前专利权人地址: HK Shatin
- 代理机构: Kenyon & Kenyon LLP
- 主分类号: G11B21/02
- IPC分类号: G11B21/02
摘要:
A system and method for adjusting the flying height of a magnetic head above a magnetic storage medium, such as a disk, is disclosed. A charging surface of the slider, separate from the read/write head, allows a charging electrical interconnect to apply an electrical charge to the slider. By acting as a quasi-parallel capacitor, the amount of spacing in the head-disk interface may be increased or decreased based on the amount of voltage applied. The slider may be electrically isolated from the suspension. Simultaneously, a heating element deforms the slider to further adjust the spacing between the read/write head and the disk surface. A feedback control system may monitor and control the head-disk spacing by measuring a temperature or other environmental conditions surrounding the slider and disk.
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