发明名称 |
Disk drive apparatus and motor |
摘要 |
A disk drive apparatus reproduces a signal from a disk and/or records an signal on the disk. A position detecting part produces a position signal in response to a rotation of a rotor. An activation operation block controls active operation of first and second power amplifying parts in response to the position signal. A signal producing part produces a slope signal which repeats a slope waveform a plural times during one period of the position signal. The shaping part produces first and second activation control signals which responds with the slope signal. The activation operation block controls the first and second power amplifying parts responding with the first and second activation control signals. Therefore, an excellent disk drive apparatus with reduced acoustic noise and reduced vibration can be realized by using only one position signal of one position sensor.
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申请公布号 |
US2003205976(A1) |
申请公布日期 |
2003.11.06 |
申请号 |
US20030453275 |
申请日期 |
2003.06.02 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
GOTOU MAKOTO |
分类号 |
G11B19/20;G11B19/28;(IPC1-7):H02P7/06 |
主分类号 |
G11B19/20 |
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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