Patent ID: 6563658
Filing Date: 2003-05-13
Classification: G06F,G11B,Y02D

Abstract:
An information storing device, coupled to a higher rank device, comprising:a disk-shaped memory medium; a motor rotatably supporting the medium; a motor driving circuit to drive the motor; a read or write head; a head driving mechanism to drive the head; a head driving circuit coupled to the head driving mechanism; and a microprocessor coupled to both the head driving circuit and the motor driving circuit; wherein, when the information storing device is powered in response to the higher rank device, a last seek mode among a plurality of seek modes is activated in the information storing device, if a first seek mode is selected, then the head driving circuit supplies a first drive current to the head driving mechanism, if a second seek mode is selected, then the head driving circuit supplies a second drive current to the head driving mechanism, and a noise level of the information storing device when the first seek mode is selected is greater than a noise level of the information storing device when the second seek mode is selected.