发明名称 |
Method and apparatus for controlling constant linear velocity of spindle motor using mirror signal |
摘要 |
A method and an apparatus for precisely controlling the rotation speed of a spindle motor in an optical system according to a given condition are provided. The method involves counting in response to a clock signal widths of first and second logic states of an input signal, which varies with rotation speed of the spindle motor, when an operation control command is issued, comparing a predetermined reference value with a count value for one check cycle, and outputting the comparison result; and controlling the constant linear velocity of the spindle motor in response to the comparison result.
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申请公布号 |
US2004095086(A1) |
申请公布日期 |
2004.05.20 |
申请号 |
US20030700644 |
申请日期 |
2003.11.04 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
KIM JE-KOOK;JANG YOUNG-WOOK |
分类号 |
G11B20/10;G11B19/22;G11B19/247;G11B19/28;H02P6/08;(IPC1-7):H02P5/00 |
主分类号 |
G11B20/10 |
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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