Patent ID: 7106543
Filing Date: 2006-09-12
Classification: G11B

Abstract:
1. A method for writing position information to a rotating medium, comprising: writing a first servo burst during a first servowriting step of a write element over a rotating medium; trimming a first portion of the first servo burst during a first pass of a second servowriting step of the write element; trimming a second portion of the first servo burst during a second pass of the servowriting step of the write element; and writing a second servo burst during a third pass of the second servowriting step of the write element, wherein the first servo burst and second servo burst each have a substantially common edge that can be used to determine the position of the write element during a subsequent pass over those servo bursts; and reducing write-in runout by demodulating and/or averaging the first and the second portion of the first servo burst.