Patent ID: 7940607
Filing Date: 2011-05-10
Classification: G11B

Abstract:
1. An optical disk device, comprising: an optical pickup that reads information recorded on an optical disk; a stepping motor that moves the optical pickup in a radial direction of the optical disk; a driving current supplying unit that supplies a driving current to drive the stepping motor, and executes selectively a full step drive and a microstep drive; a full step drive deciding unit that determines, during the full step drive, a time period during which the optical pickup traverses a predetermined distance in the radial direction of the optical disk; a drive controlling unit that executes drive control of the stepping motor by changing the driving current applied in the microstep drive based on the time period; and a driving current changing unit that changes the driving current applied in the full step drive; wherein the driving current changing unit changes stepwise a current amplitude of the driving current applied in the full step drive.