Patent ID: 7375914
Filing Date: 2008-05-20
Classification: G11B

Abstract:
1. A magnetic recording disk drive comprising: a magnetic recording disk having a plurality of generally concentric data tracks, each of the data tracks having a plurality of angularly spaced data sectors; an air-bearing slider maintained near the surface of the disk when the disk is rotating; a read/write head on the slider for reading and writing data in the data tracks of the disk; a data controller coupled to the head for selecting a data track and sector where data is to be read or written; a head-positioning actuator for moving the slider and attached head to a selected data track; a heater on the slider for changing the head-disk spacing; a head fly-height controller coupled to the data controller and the heater for applying heater power to the heater to change the head-disk spacing, the fly-height controller including a processor and memory for storing a program of instructions readable by the processor for undertaking method acts including the method act of: