Patent ID: 8031428
Filing Date: 2011-10-04
Classification: G11B

Abstract:
1. A self-servo-write system of a hard disk drive, the self-servo-write system comprising: a timing control module configured to generate (i) timing information of a first set of servo spirals and (ii) timing control signals for writing a second set of final servo wedges based on the timing information; and a position control module configured to generate (i) position information of the first set of servo spirals and (ii) positioning control signals for writing the second set of final servo wedges based on the timing information, wherein less than half of the servo spirals in the first set of servo spirals are over-written while writing the second set of final servo wedges, and wherein a ratio of a first number of final servo wedges in the second set of final servo wedges to a second number of servo spirals in the first set of servo spirals is a non-integer greater than one.