发明名称 |
Speed control of optical information reproduction apparatus |
摘要 |
A method for controlling speed of a spindle motor within a disk player is provided. The spindle motor drives a disk thereon and the disk player includes a pickup and a control circuit for performing focus and tracking operation of the pickup. The first step of method is to determine an allowable spin speed, Va, in accordance with a predetermined manner. The second step is to set speed of the spindle motor to operate at an allowable speed Va. The third step it to test if out-of-focus occurs during seeking of a particular track. If Yes in step 3, the fourth step is to re-focus the pickup. The fifth step is to set Va=Va- a predetermined decrement. The sixth step is to set speed of the spindle motor to operate at current Va decreased speed.
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申请公布号 |
US5808978(A) |
申请公布日期 |
1998.09.15 |
申请号 |
US19950549507 |
申请日期 |
1995.10.27 |
申请人 |
ACER PERIPHERALS INC. |
发明人 |
WANG, WAI WILLIAM;YEN, MENG-SHIN |
分类号 |
G11B7/085;G11B7/09;G11B7/095;G11B19/28;(IPC1-7):G11B7/00 |
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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