| 摘要 |
A method of reactivating a servo control systems for applying in an optical disc drive, comprising: activating a servo control system, for exerting a servo control on a spindle motor; if the servo control fails, repeatedly exerting the servo control on the spindle motor by the servo control system; turning off the servo control system if failing after repeatedly exerting the servo control on the spindle motor M times, wherein the spindle motor is to cause the optical disc to habitually rotate at a free rotation speed while the servo control system is turned off; and reactivating the servo control system and, based on the free rotation speed, determining a specified rotation speed corresponding to the free rotation speed, thereby causing the spindle motor to rotate at the specified rotation speed. The specified rotation speed corresponds to a specified optical disc access speed.
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