Patent ID: 6483656
Filing Date: 2002-11-19
Classification: G11B

Abstract:
A rotating disk data storage apparatus having a reduced maximum current requirement, comprising:(a) a transducer for data transfer with a rotating data storage disk; (b) a positioning motor for moving the transducer across track turns on the disk; (c) a motor driver circuit for controllably driving the positioning motor by causing energization thereof with a periodically varying motor current, each period of the motor current being notionally divisible into a first and a second part such that the motor current is less in magnitude in the first part than in the second; (d) an indicator for indicating that the positioning motor is in operation; and (e) an indicator control circuit for permitting the indicator to be energized with an indicator current only during the first part of each period of the motor current energizing the positioning motor; (f) whereby a peak of the sum of the motor current and the indicator current during the first part of the motor current period can be made no more than a peak of the motor current alone during the second part of the motor current period.