发明名称 |
Data storage device and control method therefor to prevent off-track writing |
摘要 |
Embodiments of the invention provide control of a disk data storage device to prevent off-track writing. In one embodiment, the SA acquires the CYLIDs and ADC Values generated from the SERVO SIGNALs acquired previously, and generates DACOUT which defines a driving current of the VCM driver. The SA monitors the DACOUT generated and determines whether the DACOUT is within a predefined range. If the DACOUT is outside the predefined range, data writing is inhibited. By monitoring the DACOUT, it is possible for the VCM driver to detect supply of an overcurrent to the VCM driver 210 beforehand, and off-track writing can thus be prevented.
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申请公布号 |
US7209311(B2) |
申请公布日期 |
2007.04.24 |
申请号 |
US20050063487 |
申请日期 |
2005.02.22 |
申请人 |
HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V. |
发明人 |
UEDA TETSUO;YONEDA ISAO;OHZEKI HIDEKI;MINAMI NAOYUKI |
分类号 |
G11B5/596;G11B20/10;G11B21/08 |
主分类号 |
G11B5/596 |
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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