发明授权
US07969679B2 Servo area test method of a magnetic recording medium and a test device
有权
磁记录介质和测试装置的伺服测试方法
- 专利标题： Servo area test method of a magnetic recording medium and a test device
- 专利标题（中）： 磁记录介质和测试装置的伺服测试方法
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申请号： US12693542申请日： 2010-01-26
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公开(公告)号： US07969679B2公开(公告)日： 2011-06-28
- 发明人: Hideki Mochizuki , Yoshihiro Sakurai
- 申请人： Hideki Mochizuki , Yoshihiro Sakurai
- 申请人地址： JP Tokyo
- 专利权人： Hitachi High-Technologies Corporation
- 当前专利权人： Hitachi High-Technologies Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Mattingly & Malur, P.C.
- 优先权： JP2009-022323 20090203
- 主分类号： G11B27/36
- IPC分类号： G11B27/36
摘要：
A read signal for one revolution of each of a plurality of tracks jitter of which is cancelled is obtained and a binary-coded image data for the read signal is generated and the track number position of each servo area is specified from the binary-coded image data. Further, a read signal in this position in radial direction is obtained from the track number position of each of the specified servo areas and the servo area is tested by the read signal.
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