发明名称 |
Fly on demand in situ clearance measurement concept in hard disk drive |
摘要 |
A method for determining a flying height of a head of a hard disk drive. The disk drive includes a pre-amplifier and an automatic gain control ("AGC") circuit that are connected to the head. The method includes determining a first automatic gain control value based on AGC values at two delta pre-amplifier gain settings. A second automatic gain control value is determined based on AGC values at two different flying heights. A difference between the flying heights can be determined from the first and second automatic gain control values. If one of the flying heights is set to 0 the difference in gain values is equal to the flying height of the head.
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申请公布号 |
US2007201158(A1) |
申请公布日期 |
2007.08.30 |
申请号 |
US20060364982 |
申请日期 |
2006.02.28 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
CHAN TOM |
分类号 |
G11B21/02;G11B5/02;G11B27/36 |
主分类号 |
G11B21/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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