Patent ID: 8233228
Filing Date: 2012-07-31
Classification: B82Y,G11B

Abstract:
1. A method of timing compensation when writing data during a write action to a hard disk of a hard disk drive, the method comprising: reading, by a read head, tracking data from the hard disk; generating timing control information for the read head from the tracking data, the timing control information employed to control a timing loop of the read head and a write head of the hard disk drive; determining a timing error profile corresponding to a current center slip of the hard disk based on i) a write head radial position, ii) a read and write head relative physical offset, and iii) the timing control information; generating the timing error profile based on the write head radial position, the relative physical offset, and the current timing information of the timing loop; and adjusting the timing control information for the read head based on the timing error profile thereby accounting for the current center slip.