Patent ID: 7075747
Filing Date: 2006-07-11
Classification: G11B

Abstract:
1. A head position control method for a disk device which has a plurality of heads for at least reading different faces of disks where servo signals for detecting the position of a head are recorded, comprising: a step of switching from a first head for reading from a first disk face to a second head for reading from a second disk face; a step of extracting a signal indicating a start position in the circumference direction of said second disk face from servo signals read by said second head; a step of extracting a sector number shift value of said second head relative to a sector number shift value of said first head from a plurality of sector number shift values set for each one of said plurality of heads; and a step of generating a plurality of sector numbers in a track of said second disk face corresponding to said second head from said signal indicating the start position and said extracted sector number shift value of said second head.