发明名称 |
PERPENDICULAR MAGNETIC RECORDING METHOD |
摘要 |
A perpendicular magnetic recording method for recording two kinds of signals on a magnetic recording medium which has perpendicular magnetic anisotropy, recording the first kind of signal on the recording medium with a linear recording density higher than 30 kBPI, and then recording the second kind of signal on that recording track on which the first kind of signal has been recorded, with a linear recording density which is 15 or more kBPI lower than that of the previously-recorded signal, whereby two kinds of signals can be recorded on the same recording medium in such a way that they are superimposed on one another. These two kinds of signals are detected at the same time by one magnetic head and frequency-separated by a reproduced signals processing circuit which is provided with high and low pass filters. |
申请公布号 |
DE3370891(D1) |
申请公布日期 |
1987.05.14 |
申请号 |
DE19833370891 |
申请日期 |
1983.09.30 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
SONOBE, YOSHIAKI;SUZUKI, TOSHIYUKI |
分类号 |
G11B5/00;G11B5/008;G11B5/02;G11B5/09;G11B5/58;G11B27/30;(IPC1-7):G11B5/02 |
主分类号 |
G11B5/00 |
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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