发明名称 |
System and method for writing secure data to disk |
摘要 |
Secure data is written to a disk during manufacture in such a way that it can be read but not copied. Methods include writing triangular transitions or very slow transitions from positive magnetic to negative magnetic and then erasing the negative parts to yield a code that consists of positive read back amplitudes only. Or, high frequency transitions can be written during servo writing.
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申请公布号 |
US7119980(B2) |
申请公布日期 |
2006.10.10 |
申请号 |
US20040951554 |
申请日期 |
2004.09.27 |
申请人 |
HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V. |
发明人 |
BANDIC ZVONIMIR Z.;CHEN MARTIN;HUANG FU-YING;WILSON BRUCE ALEXANDER |
分类号 |
G11B21/02 |
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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