发明授权
US4851939A Actuator driving apparatus and magnetic disk drive system with a smaller
number of high power amplifiers than actuators
失效
执行器驱动装置和具有比执行器少的高功率放大器的磁盘驱动系统
- 专利标题： Actuator driving apparatus and magnetic disk drive system with a smaller number of high power amplifiers than actuators
- 专利标题（中）： 执行器驱动装置和具有比执行器少的高功率放大器的磁盘驱动系统
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申请号： US048587申请日： 1987-05-11
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公开(公告)号： US4851939A公开(公告)日： 1989-07-25
- 发明人: Yosuke Seo , Yoshiyuki Hirano , Hajime Aoi , Takashi Tamura , Kazuyoshi Nakabayashi
- 申请人： Yosuke Seo , Yoshiyuki Hirano , Hajime Aoi , Takashi Tamura , Kazuyoshi Nakabayashi
- 申请人地址： JPX Tokyo
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX61-110768 19860516
- 主分类号： G11B21/08
- IPC分类号： G11B21/08 ; G11B5/012 ; G11B5/55
摘要：
In a magnetic disk drive apparatus having a plurality of actuators, or a magnetic disk drive system constructed of a plurality of head disk assemblies (HDA's); a magnetic disk drive apparatus or system in which the actuators included in the above apparatus or system can be arbitrarily and selectively coupled with a plurality of access control circuits and high power amplifiers that are smaller in number than the actuators.