Patent ID: 7623417

Claim:
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 decides whether or not an operation performed when the optical pickup is moved in the full step drive is normally ended; a drive controlling unit that executes drive control of the stepping motor by changing the driving current applied in the microstep drive in response to a decision result; an optical pickup position sensing unit that senses whether or not a movement of the optical pickup to a predetermined position of an inner circumference of the optical disk is completed; and a moving time deciding unit that decides a moving time required until the optical pickup is moved to the predetermined position of the inner circumference in the full step drive, wherein the driving current supplying unit supplies an intermittent driving current at a predetermined time width to the stepping motor in executing the microstep drive; and wherein the drive controlling unit changes a supply time width of the driving current in response to the moving time of the optical pickup.