发明名称 |
Dual polarity thermal asperity detector for direct access storage device (DASD) |
摘要 |
A method and apparatus are provided for dual polarity thermal asperity detection in a direct access storage device. A level threshold comparator receives a data signal from a data channel in the direct access storage device and compares sequential data samples of the data signal with a positive level threshold and a negative level threshold. Responsive to each identified consecutive data sample above the positive level threshold and responsive to each identified consecutive data sample less than the negative level threshold, a counter value is incremented. A count comparator compares the counter value with a predefined count threshold and identifies a thermal asperity event responsive to a counter value above the predefined count threshold.
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申请公布号 |
US6175457(B1) |
申请公布日期 |
2001.01.16 |
申请号 |
US19980167236 |
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;G11B20/10;G11B33/10;(IPC1-7):G11B5/09;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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