发明名称 |
Fly height detector |
摘要 |
A fly height detector apparatus and associated method for detecting the fly height of a read/write head spatially disposed from a data storage surface during a data transfer operation. The fly height detector apparatus comprises a receiver circuit measuring the frequency of the read/write head; a perturbation deliverable to the gap between the read/write head and the data storage surface to invoke a dynamic response in the read/write head; and a processor circuit responsive to the receiver circuit to derive a fly height in relation to the dynamic response frequency. The processor circuit comprises a memory in which is stored a numerical model describing a functional interrelationship between the fly height and the read/write head frequency.
|
申请公布号 |
US6785081(B2) |
申请公布日期 |
2004.08.31 |
申请号 |
US20010975294 |
申请日期 |
2001.10.11 |
申请人 |
SEAGATE TECHNOLOGY LLC |
发明人 |
CHAPIN MARK A.;FAYEULLE SERGE J.;MUNDT MICHAEL D.;BEMENT GARY E.;SMITH PAUL W. |
分类号 |
G11B5/012;G11B5/60;G11B19/04;G11B21/21;G11B27/36;G11B33/10;(IPC1-7):G11B21/02 |
主分类号 |
G11B5/012 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|