Patent ID: 6577094
Filing Date: 2003-06-10
Classification: G11B

Abstract:
An optical pickup position control method that uses a stepping motor to control the relative position of an optical disk with respect to an optical pickup, for recording and/or playing information by shining an optical spot from said optical pickup onto said optical disk, said optical pickup being movable between a base position, a center position and a maximum feed position, wherein said method comprises:a) a first procedure that gives said stepping motor a control command that moves said optical pickup, by a feed amount that is smaller than a maximum feed amount from said base position that is the base for the control as far as the maximum feed position of said stepping motor, in the direction from said base position to said maximum feed position, b) a second procedure that gives said stepping motor a control command that moves said optical pickup by said maximum feed amount in the direction toward said base position, and c) a third procedure that gives said stepping motor a control command that moves said optical pickup in the direction from said base position toward said maximum feed position by a center position feed amount from said base position as far as the center position that yields the pre-measured optimum jitter characteristics of the output signal of said optical pickup.