Patent ID: 6922299
Filing Date: 2005-07-26
Classification: G11B

Abstract:
1. A method of driving a spindle motor that rotates a disk and a voice coil motor that acts as a driving source for a head actuator in a disk drive, the head actuator supporting a head in such a manner that the head can move along the radius of the disk, the method comprising: setting a driving voltage applied to a motor driver that drives both the spindle motor and the voice coil motor to a first driving voltage in a first mode, the first mode being a mode in which priority is given to making faster a seek operation of moving the head to a target track on the disk, wherein the setting of the first driving voltage includes causing a power supply unit to output the first driving voltage to the motor driver, the power supply unit being capable of varying the voltage level of the driving voltage applied to the motor driver, wherein the first driving voltage is the maximum voltage that the power supply unit can output; and setting a driving voltage applied to the motor driver to a second driving voltage lower than the first driving voltage in a second mode, the second mode being a mode in which priority is given to reducing the power loss in the motor driver, wherein the setting of the second driving voltage includes causing the power supply unit to output the second driving voltage to the motor driver.