发明名称 |
Disk drive having a disk including a servo burst pattern having a normal servo burst field and a quadrature servo burst field |
摘要 |
A disk drive has a sampled servo system controller and a disk. The disk has a plurality a plurality servo burst fields, the plurality of servo burst field including first and second normal burst fields, and first and second quadrature burst fields. A portion of the first quadrature burst field is circumferentially contiguous with the first normal burst field and spans a portion of a radial extent of the first normal burst field. The second normal burst field is radially aligned with and away from the first normal burst field and spans a portion of a radial extent of the first quadrature burst field. The second quadrature burst field is radially aligned with and away from the first quadrature burst field and spans a portion of a radial extent of the second normal burst field. The first normal burst field and the first quadrature burst field have a same first phase and the second normal burst field and the first quadrature burst field have a same second phase. The first phase is different than the second phase.
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申请公布号 |
US6980389(B1) |
申请公布日期 |
2005.12.27 |
申请号 |
US20040789675 |
申请日期 |
2004.02.27 |
申请人 |
WESTERN DIGITAL TECHNOLOGIES, INC. |
发明人 |
KUPFERMAN HANAN |
分类号 |
G11B5/596;(IPC1-7):G11B5/596 |
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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