发明名称 |
Spindle motor driver |
摘要 |
A spindle motor driver is provided. The spindle motor driver includes a spindle motor for rotating an optical disc, an optical head for reading signals from the optical disc to reproduce the information recorded on the optical disc, a processor for processing the detected signals, and a constant linear velocity (CLV) servo for controlling the spindle motor to rotate with a CLV according to the signal processed by the processor. A constant angular velocity (CAV) servo is connected in parallel to the CLV servo to control the spindle motor to rotate with a CAV when the optical head performs jumping. Additionally, a feedback loop is provided between the spindle motor and the CAV servo for feeding back the rotation speed signal of the optical disc. A switching means selectively connects the processor with the CAV servo and the CLV servo. Thus, access time of the optical head can be effectively shortened.
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申请公布号 |
US5699335(A) |
申请公布日期 |
1997.12.16 |
申请号 |
US19950581410 |
申请日期 |
1995.12.29 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
JOO, SEONG-SIN;LEE, SEUNG-ILL |
分类号 |
G11B27/10;G11B7/085;G11B19/26;G11B19/28;(IPC1-7):G11B7/00 |
主分类号 |
G11B27/10 |
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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