| 摘要 |
An optical disk device of the present invention includes a spindle motor, an optical pick-up, and a rotation control portion. The spindle motor is a rotational drive portion that rotates an optical disk, on an information recording surface of which a plurality of addresses are recorded. The optical pick-up records an information signal onto and plays back the information signal from the information recording surface of the optical disk that is rotated by the spindle motor. The rotation control portion controls the rotation of the optical disk by the spindle motor. In this case, the rotation control portion performs control based on a first reference signal that can be read off the optical disk, such that the optical disk is rotated at a speed that is based on a specified clock count.
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