Patent ID: 6091695
Filing Date: 2000-07-18
Classification: G11B

Abstract:
A recording/reproducing device having a pickup unit including a head mounted thereon, the pickup unit selecting a desired disk from a magazine that accommodates a plurality of disks therein to read/write data between the selected disk and the head, the device comprising:a cam plate that has a cam groove engaged with a cam pin of the pickup unit such that the pickup unit is vertically moveable and is moveably supported in a horizontal direction;a motor for driving said cam plate in the horizontal direction;a sensor for detecting a position of said cam plate in the horizontal direction; anda horizontal cam groove portion which is formed on at least one end portion of said cam groove and with which said cam pin of said pickup unit is brought into contact,characterized in that said cam plate is driven in the horizontal direction by said motor, said cam pin of said pickup unit is brought into contact with said horizontal cam groove portion, and, at this time, initialization of said cam plate is performed by said sensor detecting the position of said cam plate in the horizontal direction,said motor drives said cam plate at a first speed in a predetermined direction until a difference between an output value from said sensor and a target value is equal to a first predetermined value,thereafter, the motor drives said cam plate at a second speed lower than the first speed and in the predetermined direction until the difference between the output value from said sensor and the target value is equal to a second predetermined value smaller than the first predetermined value, andthereafter, driving of said cam plate is stopped when the motor drives said cam plate in the predetermined direction and the difference between the output value from said sensor and the target value reaches a third predetermined value smaller than the second predetermined value.