Patent ID: 6600620
Filing Date: 2003-07-29
Classification: G11B

Abstract:
A self-servo writing disk drive comprising:(a) a disk comprising a first radial location and a second radial location, the first radial location for storing first A clock data interleaved with first B clock data and first A servo bursts interleaved with first B servo bursts, the second radial location for storing second A clock data interleaved with second B clock data and second A servo bursts interleaved with second B servo bursts; (b) a head comprising a read element and a write element, wherein the read element is radially offset from the write element; (c) a memory for storing a self-servo writing program; and (d) a control system responsive to the self-servo writing program for performing the steps of: during a first time interval: positioning the read element over a region of the first radial location; using the read element to read from the region of the first radial location at least part of the first A clock data to generate first circumferential timing information; using the read element to read from the region of the first radial location at least part of the first A servo bursts to generate first position control information; using the first position control information to position the write element over the second radial location; and using the first circumferential timing information to write at least part of the second B clock data and at least part of the second B servo bursts to the second radial location; during a second time interval: positioning the read element over the region of the first radial location; using the read element to read from the region of the first radial location at least part of the first B clock data to generate second circumferential timing information; using the read element to read from the region of the first radial location at least part of the first B servo bursts to generate second position control information; using the second position control information to position the write element over the second radial location; and using the second circumferential timing information to write at least part of the second A clock data and at least part of the second A servo bursts to the second radial location.