发明名称 |
Adaptive threshold for detecting touchdown or contamination |
摘要 |
A disk drive is disclosed comprising a disk, a head for writing data to the disk, and control circuitry coupled to the head. The control circuitry is operable to determine a first set of fly height values and determine a threshold based on the first set of fly height values. The control circuitry determines a second set of fly height values, adjusts the threshold based on the second set of fly height values, and detects a head characteristic based on the adjusted threshold. The head characteristic is detected by detecting a head touchdown event and/or detecting contamination related to the head based on the adjusted threshold. |
申请公布号 |
US8665546(B1) |
申请公布日期 |
2014.03.04 |
申请号 |
US20100684045 |
申请日期 |
2010.01.07 |
申请人 |
ZHAO HONGCHAO TIM;LIANG JIANGANG;CAI YILIN;BRUNNETT DON;WESTERN DIGITAL TECHNOLOGIES, INC. |
发明人 |
ZHAO HONGCHAO TIM;LIANG JIANGANG;CAI YILIN;BRUNNETT DON |
分类号 |
G11B21/02 |
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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