Patent ID: 7555595
Filing Date: 2009-06-30
Classification: G11B

Abstract:
1. A method of writing servo frames to tracks of a storage medium using a write element of a head, each servo frame including a position field that is used to position a read element of the storage medium over the tracks and a logic field that provides a timing reference for the servo frame, the position field having at least a first portion and a second portion that is spaced laterally of the track from the first portion, the method comprising: (A) positioning the write element over a track on the storage medium; (B) writing a complete full width logic field of a servo frame to said track with the write element; (C) writing a first portion of the position field of said servo frame to a first part of said track with the write element; (D) moving the write element relative to the storage medium such that a second portion of said position field of said servo frame of said track can be written at a position that is at least spaced laterally of the track from said first portion; (E) during the movement in step (D), reading at least a portion of at least one of (i) said logic field of said servo frame of said track and (ii) a logic field of a servo frame of another track, in order to allow said portion of the logic field to be verified; (F) writing said second portion of said position field of said servo frame of said track at a position that is at least spaced laterally of the track from said first portion with the write element; and, (G) repeating steps (A) to (F) as required for subsequent tracks on the storage medium, said position fields and said logic fields of said servo frames providing references for locating data sectors.