Patent ID: 8908316
Filing Date: 2014-12-09
Classification: G11B

Abstract:
1. A disk drive comprising: a disk with thin films deposited on a surface, the thin films being patterned in generally circular tracks of isolated data islands that have a single magnetic domain in each data island; a write head that is positionable over the tracks to write the magnetic domains in the data islands responsive to a write clock signal as the disk rotates under the write head, the writer head moving in an arcing path over the tracks on the disk from the inner diameter to an outer diameter; a linear vibration sensor positioned with a sensitivity axis substantially aligned perpendicularly to a radial line from a center of the disk, the radial line intersecting the arcing path at first and second points where the head is positionable over first and second selected tracks respectively with first and second tracks being separated by a plurality of tracks; and a write clock signal generator that generates the write clock signal using a feed-forward control signal derived from the linear vibration sensor, the feed-forward control signal modifying the write clock signal to compensate for linear vibration components perpendicular to the radial line.