OPTICAL DISK RECORDING/REPRODUCING APPARATUS AND ITS DISK ROTARY DRIVING APPARATUS

摘要

A disk rotary driving apparatus in an optical disk reproducing apparatus capable of reproducing disks having different sizes includes a spindle motor for rotationally driving a disk, a servo unit for controlling rotation of the spindle motor, and a control unit for detecting an activation response state of the spindle motor upon starting, and switching a gain of the servo unit on the basis of the detection result.