发明名称 |
Thermal asperity detection with long magnet rejection for direct access storage device (DASD) |
摘要 |
A method and apparatus are provided for thermal asperity detection in a direct access storage device. A data signal is received from a data channel in the direct access storage device. A level threshold comparator compares data samples of the data signal with a selected level threshold. Consecutive zero level data samples are detected. Responsive to each identified data sample above the selected level threshold and not an identified consecutive zero level data sample, a counter value is incremented. The counter value is compared with a predefined count threshold. A thermal asperity event is identified responsive to the counter value above the predefined count threshold.
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申请公布号 |
US6137643(A) |
申请公布日期 |
2000.10.24 |
申请号 |
US19980167050 |
申请日期 |
1998.10.06 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
FLYNN, DAVID TIMOTHY |
分类号 |
G11B5/012;G11B5/09;G11B19/04;G11B20/10;G11B20/24;G11B27/36;(IPC1-7):G11B5/02 |
主分类号 |
G11B5/012 |
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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