Patent ID: 7701162
Filing Date: 2010-04-20
Classification: G11B

Abstract:
1. A method for controlling a spindle motor to rotate a disc, an optical pickup head to transfer data with respect to the disc, and a stepping motor to move an optical pickup head to transfer data with respect to locations on the disc, the method comprising: applying a first micro-step mode to the stepping motor to speed up a movement of the optical pickup head gradually to a first speed; applying a first full step mode or a first half step mode to the stepping motor to accelerate the movement of the optical pickup head from the first speed to a first predetermined speed; applying a second full step mode or a second half step mode to the stepping motor to decelerate the movement of the optical pickup head from the first predetermined speed to a second speed prior to decelerating to a second predetermined speed; and applying a second micro-step mode to the stepping motor to slow down a movement of the optical pickup head gradually from the second speed to the second predetermined speed.