发明授权
- 专利标题： Driver device of magnetic heads for magnetic record and reproduction
- 专利标题（中）： 用于磁记录和再现的磁头驱动装置
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申请号： US733843申请日： 1991-07-22
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公开(公告)号： US5311377A公开(公告)日： 1994-05-10
- 发明人: Yasuo Mitsuhashi
- 申请人： Yasuo Mitsuhashi
- 申请人地址： JPX Tokyo
- 专利权人： Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人： Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX2-197484 19900723
- 主分类号： G11B5/53
- IPC分类号： G11B5/53 ; G11B15/02 ; G11B15/12 ; G11B5/02 ; G11B5/03
摘要：
A driver device for magnetic heads for a magnetic recording and reproduction apparatus. The driver device drives at least one combined head including at least two head members, each head member having a winding coil, and the effective gap width of the combined head is changed by selectively short-circuiting at least one of the winding coils. By switching a connection between the combined head and a record amplifier or a reproduction head amplifier, the effective gap width of the combined head is changed either to a narrow effective gap width for n time speed recording or reproducing or to a wide effective gap width for standard speed recording or reproducing.
公开/授权文献
- US4122952A Photometric sorters 公开/授权日：1978-10-31