发明名称 |
Eccentricity correction method, signal processing circuit, magnetic storage apparatus and perpendicular magnetic recording medium |
摘要 |
A magnetic storage apparatus has a reproducing head to reproduce information from a perpendicular magnetic recording medium that is recorded with servo information, eccentricity correction data and read/write data. The apparatus further has a filter part to filter a reproduced output of the reproducing head by filtering the servo information which has a differentiated waveform by a non-differentiating characteristic and by filtering the eccentricity correction data and the read/write data which have rectangular waveforms by a differentiating characteristic, a demodulating part to demodulate the servo information, the eccentricity correction data and the read/write data that are filtered by the filter part, and a servo system to carry out a control process including an eccentricity control based on the servo information and the eccentricity correction data that are demodulated. |
申请公布号 |
US8111474(B2) |
申请公布日期 |
2012.02.07 |
申请号 |
US20090605016 |
申请日期 |
2009.10.23 |
申请人 |
MARUYAMA TSUGITO;KURODA SUMIO;TOSHIBA STORAGE DEVICE CORPORATION |
发明人 |
MARUYAMA TSUGITO;KURODA SUMIO |
分类号 |
G11B5/09;G11B5/596 |
主分类号 |
G11B5/09 |
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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