发明名称 |
Apparatus, signal-processing circuit and device for magnetic recording system |
摘要 |
To effectively suppress a signal in a low frequency region in which the medium noise and the signal distortion are concentrated, and in order to effectively utilize a detected component of the reproduced signal in the low frequency region, a target of partial response equalization to the perpendicularly recorded/reproduced signal is set so that the low-frequency component around the direct current is suppressed to a regulated quantity for both the effective suppression and the effective utilization. Accordingly, a maximum-likelihood decoding process is carried out through the target of partial response equalization. Reliability of data detection is made higher and a signal-to-noise ratio is improved, so that the noise from the recording medium can be reduced more and it is possible to provide a high-density magnetic recording/reproducing apparatus. |
申请公布号 |
US8144415(B2) |
申请公布日期 |
2012.03.27 |
申请号 |
US20100923307 |
申请日期 |
2010.09.14 |
申请人 |
SAWAGUCHI HIDEKI;NISHIDA YASUTAKA;TAKANO HISASHI;TSUCHINAGA HIROYUKI;HITACHI GLOBAL STORAGE TECHNOLOGIES JAPAN, LTD. |
发明人 |
SAWAGUCHI HIDEKI;NISHIDA YASUTAKA;TAKANO HISASHI;TSUCHINAGA HIROYUKI |
分类号 |
G11B5/35;G11B5/00;G11B5/09;G11B20/10;H04L25/497 |
主分类号 |
G11B5/35 |
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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