发明名称 |
Device for producing a high frequency modulation magnetic field used in magneto-optical recording |
摘要 |
A device for producing a high frequency modulating magnetic field is disclosed. The device is especially useful to achieve real-time overwriting in magneto-optical recording. The device produces magnetic field modulated according to a signal to be recorded on a magneto-optical recording medium in which the signal is recorded in the form of magnetization direction on the magneto-optical recording medium under irradiation of a laser beam to raise the temperature of the medium. The device comprises a main magnetic pole formed of a low-loss soft magnetic material and having one end facing to the magnetic-optical recording medium and a sheathed conductor wound around the main magnetic pole and consisting of a parallel connection of a plurality of insulated elementary wires.
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申请公布号 |
US4796241(A) |
申请公布日期 |
1989.01.03 |
申请号 |
US19870005779 |
申请日期 |
1987.01.21 |
申请人 |
SONY CORPORATION |
发明人 |
HAYAKAWA, MASATOSHI;NAGAKI, TAKEHIRO;ASO, KOICHI;YAMANOI, HIROSHI |
分类号 |
G11B11/105;(IPC1-7):G11B5/03;G11B11/12 |
主分类号 |
G11B11/105 |
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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