发明名称 |
Method and apparatus to detect and manage servo sectors with defects on servo pattern area in hard disk drives |
摘要 |
<p>An apparatus, method and computer program product for a hard disk drive (10) defect detection system. In one embodiment, a method of detecting defects on the surface of a disk (12) having a plurality of tracks (tn) is recited. The method comprises reading, one or more times, the servo bits for a plurality of sectors (i) and determining a burst measure for at least one sector, where the burst measure is a function of the burst signals for the sector. This method further comprises determining a reference value, where the reference value is a function of the burst signals of the plurality of sectors, and comparing the burst measure of at least one sector to the reference value to identify a potential defect. In one embodiment, a sector is mapped as defective where its burst measure differs from the reference value by at least 5 percent. <IMAGE></p> |
申请公布号 |
EP1189222(A2) |
申请公布日期 |
2002.03.20 |
申请号 |
EP20010122138 |
申请日期 |
2001.09.14 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
CHU, SANG-HOON;SHIM, JUN-SEOK;YU, SEONG-HWAN;CHOI, SOO-IL |
分类号 |
G11B20/10;G11B5/00;G11B5/596;G11B20/18;G11B21/02;G11B27/30;G11B27/36;(IPC1-7):G11B19/04 |
主分类号 |
G11B20/10 |
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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