| 摘要 |
An information recording/reproduction apparatus is adapted to quickly move the optical pickup to a desired position on the optical disk being used with it without emitting any sound of collision. The information recording/reproduction apparatus adapted to use an optical disk comprises an optical pickup 5 supported by a lead screw 9 so to move freely at least in a radial direction of the optical disk 1, a thread motor 4 for driving the optical pickup 5 to move by the distance specified by a drive signal in the radial direction of the optical disk 1, a position detecting switch 7 for detecting the innermost movable limit of the optical pickup 5 in the radial direction of the optical disk 1 and a system controller 6 for controlling the movement of the optical pickup 5 by means of the drive signal applied to the thread motor 4, using the detected position as reference.
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