Patent ID: 9099125
Filing Date: 2015-08-04
Classification: G11B

Abstract:
1. A two-dimensional magnetic recording (TDMR) disk drive comprising: a rotatable magnetic recording disk having a plurality of concentric data tracks having a track pitch TP, the disk having an inside diameter (ID) region, a mid-diameter (MD) region and an outside (OD) diameter region; a multi-sensor read head for generating readback signals from the data tracks; a rotary actuator for moving the head in a generally arcuate path across the data tracks, wherein the head has a skew angle (A) relative to an along-the-track direction as a function of radial position; wherein the multi-sensor read head comprises: circuitry responsive to the radial position of the multi-sensor read head for selecting two of the sensors as active sensors for providing readback signals, the circuitry including switch means for selecting the first and second sensors as the active sensors when the head is located in the MD region, and for selecting the first and third sensors when the head is located in the ID and OD regions.