Patent ID: 6040963
Filing Date: 2000-03-21
Classification: G11B

Abstract:
A method for recording a plurality of tracks of servo information longitudinally defined within a servo section of a magnetic recording medium, the method comprising:writing a servo signal that extends substantially continuously over a width of the servo section along at least a portion of the magnetic recording medium;providing an erase transducer that includes two or more erase elements, wherein each of the two or more erase elements has a predetermined width and is separated from any adjacent erase elements by a non-erasing portion, wherein the predetermined width of each of the two or more erase elements is less than a desired servo track pitch, wherein each erase element is operable to erase alternating portions of the servo signal in the servo section resulting in transitions between alternating erased portions and adjacent continuous servo signal, wherein such transitions define at least one of the plurality of tracks of servo information; andrepeatedly passing and stopping an erase current through an erase transducer to erase alternating portions of the servo signal in the servo section, wherein passing and stopping the erase current through the erase transducer includes controlling the amplitude of the erase current to control the fringe field effect between erase elements such that a width of the erased alternating portions matches the desired servo track pitch.