发明名称 |
MAGNETIC RECORDING MEDIUM, SERVO RECORDING METHOD TO MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING DEVICE |
摘要 |
PROBLEM TO BE SOLVED: To provide a magnetic recording device having higher density and large recording capacity by recording servo information with self servo writing in a servo region composed of a flattened part of a discrete track medium and obtaining servo characteristics excellent more than that of pre-pattern servo and similar to that of magnetic servo writing. SOLUTION: The flattened part 112 is provided on a pattern disk 11 wherein the discrete track 110 is formed and servo information is recorded on the flattened part by using a self servo writing method. A pattern (groove) 128 for timing detection for controlling timing in the circumferential direction needed upon self servo writing is preprovided on a disk by patterning and a RRO error signal used for controlling positioning in the radial direction is recorded in the servo information on the flattened part of the disk. COPYRIGHT: (C)2009,JPO&INPIT
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申请公布号 |
JP2008243266(A) |
申请公布日期 |
2008.10.09 |
申请号 |
JP20070080162 |
申请日期 |
2007.03.26 |
申请人 |
HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS BV |
发明人 |
IKEGAME HIROSHI;AKAGI KYO |
分类号 |
G11B21/10;G11B5/65;G11B5/82 |
主分类号 |
G11B21/10 |
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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