According to one embodiment, a disk drive apparatus includes a disk having a plurality of tracks formed of approximately concentric patterns, a head slider reading and writing data from and to the disk, a motor driver configured to move the head slider to a target position on the disk, an electronic...http://www.google.de/patents/US7599141?utm_source=gb-gplus-sharePatent US7599141 - Disk drive apparatus, electronic circuit for disk drive apparatus and powering method therefor
