Patent ID: 7800859
Filing Date: 2010-09-21
Classification: G11B

Abstract:
1. A recording/reproducing apparatus comprising: a rotary-type magnetic recording medium including a track pattern in which concentric or spiral data recording tracks are provided; a composite magnetic head including a reproducing element that carries out a read of a magnetic signal from the magnetic recording medium and a recording element that carries out a write of a magnetic signal on the magnetic recording medium; a control unit that moves the magnetic head over the magnetic recording medium to carry out tracking servo control on one element out of the reproducing element and the recording element to keep the one element on one of the data recording tracks; and a storage unit that stores offset information capable of specifying an offset for calculating an adjustment used to adjust a head position of the magnetic head during the tracking servo control, the offset being a distance along a radial direction between a center of the reproducing element that constructs the composite magnetic head and a center of the recording element that constructs the composite magnetic head, wherein the storage unit stores information that specifies at least two different offsets per revolution of one of the data recording tracks as the offset information, and during the tracking servo control on one element out of the reproducing element and the recording element as in a read of data from one of the data recording tracks that is carried out by reading the magnetic signal from the one of the data recording tracks in a state where the reproducing element is kept on the one of the data recording tracks, or a write of data on one of the data recording tracks that is carried out by writing the magnetic signal on the one of the data recording tracks in a state where the recording element is kept on the one of the data recording tracks, the control unit adjusts the head position by changing the adjustment at least once during a single rotation of the magnetic recording medium in accordance with offsets specified based on the offset information.