Patent ID: 6717760
Filing Date: 2004-04-06
Classification: B82Y,G11B

Abstract:
A method for detecting a sensitivity distribution profile of a magnetic read head, comprising the steps of:detecting a signal from a plurality of patterns disposed on a magnetic recording medium in an area different from a servo area of a zone for track width measurement so as to be deviated respectively at least more narrowly than the width of a read element of said magnetic read head, wherein a width in the track width direction of each of said plurality of patterns is narrower than the width in the track width direction of said read element, and lengths in the track length direction of said plurality of patterns are equal; wherein said magnetic recording medium includes a zone for data and said zone for track width measurement, wherein said zone for data has a data area and a servo area, and where in said zone for track width measurement has the servo area and the area different from the servo area; calculating a microtrack profile from the detected signal of said plurality of patterns; and calculating a convolution integral between said microtrack profile and a step function.