发明名称 |
METHOD AND APPARATUS FOR TESTING CHARACTERISTICS OF A FLOPPY DISC AND A FLOPPY DISC DRIVE |
摘要 |
Method and apparatus for determining the alignment of a data track on a magnetic disc, for example a floppy disc and for determining the alignment of a read/write head in disc drive writing apparatus. In the method the radius of the circumferential center line of the track is determined by determining the radius of the peak value of the transverse envelope of the signal on the data track. The peak value is determined by computing the track average amplitude at a number of incremental positions transversely across the data track. The peak value and its radial position is then computed using a parabolic curve fitting technique. |
申请公布号 |
ZA8804082(B) |
申请公布日期 |
1989.02.22 |
申请号 |
ZA19880004082 |
申请日期 |
1988.06.08 |
申请人 |
BENARES LIMITED |
发明人 |
JAMES O'REILLY;FINBAR KAVANAGH |
分类号 |
G11B5/596;G11B19/00;G11B20/18;G11B27/36 |
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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