发明名称 |
Frequency-based approach for detection and classification of hard-disc defect regions |
摘要 |
In a hard-disc drive read channel, frequency-based measures are generated at two different data frequencies (e.g., 2T and DC) by applying a transform, such as a discrete Fourier transform (DFT), to signal values, such as ADC or equalizer output values, corresponding to, e.g., a 2T data pattern stored on the hard disc. The frequency-based measures are used to detect defect regions on the hard disc and/or to classify defect regions as being due to either thermal asperity (TA) or drop-out media defect (MD). |
申请公布号 |
EP2362395(B1) |
申请公布日期 |
2014.09.10 |
申请号 |
EP20110000843 |
申请日期 |
2011.02.03 |
申请人 |
LSI CORPORATION |
发明人 |
MATHEW, GEORGE;HAN, YANG;YANG, SHAOHUA;LI, ZONGWANG;LEE, YUAN, XING |
分类号 |
G11B20/18;G11B5/012;G11B19/04;G11B27/36 |
主分类号 |
G11B20/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|