METHOD FOR SENSING TRANSDUCER HEAD POSITION TO STORAGE MEDIUM, SERVO CONTROL SYSTEM FOR POSITIONING MAGNETIC HEAD PROXIMATELY TO SURFACE OF MAGNETIC STORAGE MEDIUM, METHOD FOR WRITING LONGITUDINAL SERVO TRACK IN MAGNETIC STORAGE MEDIUM, AND MAGNETIC STORAGE MEDIUM INCLUDING LONGITUDINAL SERVO TRACK

摘要

PROBLEM TO BE SOLVED: To provide a method and system for sensing the position of a transducer head with respect to a storage medium.;SOLUTION: One method includes a step for generating a read signal from a servo track stored on the magnetic storage medium. The servo track includes servo frames of magnetic flux transitions forming detectable servo marks, the servo marks forming a tone field of repeating servo marks oriented at a first azimuth angle and a mid-frame synchronization mark incorporated within the tone field, wherein the tone field provides a metric reference for dimensional measurements between features within the servo frame(s). The number of servo marks in the tone field of each servo frame along a longitudinal direction of the servo track before the mid-frame synchronization mark and after the mid-frame synchronization mark varies with lateral position.;COPYRIGHT: (C)2006,JPO&NCIPI