| 摘要 |
The method is shown of accessing data recorded in concentric circular or spiral tracks on a recording disc at high speed. A pickup at a position S on the disc is kicked to a position S' on a track on which an objective address data recorded position O exists. Thereafter, the disc is operated at a predetermined acceleration torque until the pickup reaches an intermediate position between the positions S' and O, which is determined by a rotational angle from the position S' to O. Then, the disc is decelerated at a predetermined deceleration torque so as to return a speed at which the pickup can read the recorded data before the pickup reaches the position O. With the acceleration and deceleration of the disc, the pickup can quickly come close to the position O and thus can access the data recorded at the position O within an extremely short time.
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