发明名称 |
SPIN MOTOR CONTROL IN AN OPTICAL DRIVE |
摘要 |
A system and method for controlling operation of a motor system that addresses the design challenges for the small form factor optical disk system. The control system can include a lookup table module providing a reference period corresponding to each of a physical sector address on an optical medium. The system can further include a drive module configured to sense a BEMF zero crossing occurring in a spin motor. A measurement of two of the BEMF zero crossings can be used to calculate a spin period measurement. The reference period can be compared to the spin period measurement to provide a period error value. The system also includes a controller module for providing a control command to drive the spin motor in response to the period error value. |
申请公布号 |
WO02059893(A2) |
申请公布日期 |
2002.08.01 |
申请号 |
WO2002US01841 |
申请日期 |
2002.01.18 |
申请人 |
DATAPLAY, INC. |
发明人 |
WATT, CHARLES, R.;TURNER, CHRISTOPHER, J. |
分类号 |
G11B7/085;G11B7/09;G11B19/247;G11B19/28 |
主分类号 |
G11B7/085 |
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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