| 摘要 |
A method of detecting an optical disks applied in an optical disk drive is disclosed. The optical disk drive includes a spindle motor and an optical pickup unit (OPU). The method includes steps of moving the optical pickup unit to a first position; controlling the optical pickup unit to emit a first laser beam; detecting if any to-be-read disk is loaded in the optical disk drive according to the reflection of the first laser beam, and ending the method if no to-be-read disk is loaded in the optical disk drive; moving the optical pickup unit to a second position; controlling the optical pickup unit to emit a second laser beam; and determining the scale of the to-be-read disk according to the reflection of the second laser beam.
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