发明名称 |
Magnetic head apparatus with variable inductance |
摘要 |
A magnetic recording head apparatus includes: a magnetic head body opposing a travelling magnetic tape; a tuning circuit having the head body as a variable inductance element; a high-frequency signal source for generating a high-frequency signal; and a detector connected to the tuning circuit. The inductance of the head body is changed in accordance with a change in the magnetic signal field applied from the magnetic tape. The high-frequency signal is amplitude-modulated in accordance with the high-frequency signal. A peak or envelope waveform of the modulated high-frequency signal is detected by a detector, thereby obtaining a reproduced information signal.
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申请公布号 |
US4609950(A) |
申请公布日期 |
1986.09.02 |
申请号 |
US19830477858 |
申请日期 |
1983.03.22 |
申请人 |
TOKYO SHIBAURA DENKI KABUSHIKI KAISHA |
发明人 |
CHIBA, SHU;SAWAZAKI, NORIKAZU |
分类号 |
G11B5/02;G11B5/00;G11B5/33;(IPC1-7):G11B5/02;G11B5/127;G11B20/06 |
主分类号 |
G11B5/02 |
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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