发明名称 |
Method and data storage device for writing patterns onto recording disk |
摘要 |
Embodiments of the invention efficiently conduct servo corrections for preventing error propagation during SSW. In an example of the present invention, a servo position signal generator generates a servo position signal indicative of the current position of a read element on the basis of a servo signal from a servo channel. A target position generator generates correction data from multiply and add operations between the PES generated when the track that the read element is following is written, and pre-registered correction coefficients. A correction target position is generated from the correction data and a reference target position, and then output to a position error calculator. The position error calculator generates a position error signal (PES) from the servo position signal and the target position signal, and outputs PES to a servo controller. The servo controller generates a control signal (DACOUT) in accordance with PES, and a motor driver unit supplies an electric current of a required value to a VCM in accordance with the control signal.
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申请公布号 |
US7286316(B2) |
申请公布日期 |
2007.10.23 |
申请号 |
US20060437552 |
申请日期 |
2006.05.19 |
申请人 |
HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V. |
发明人 |
SAI FUMINORI;OZAWA YUTAKA;TAKASAKI KOHJI;YANAGISAWA HIROSHI;YAMAMOTO SATOSHI |
分类号 |
G11B21/02;G11B5/55;G11B5/596 |
主分类号 |
G11B21/02 |
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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