US 6,982,849 B2
Method and apparatus for providing positional information on a disk
Tung Nguyen, San Jose, Calif. (US); Sang Hoon Chu, Santa Clara, Calif. (US); Jun Seok Shim, Cupertino, Calif. (US); Kang Seok Lee, Cupertino, Calif. (US); Soo Il Choi, Santa Clara, Calif. (US); and Seong Hwan Yu, San Jose, Calif. (US)
Assigned to Samsung Electronics Co., Ltd., Suwon (Korea, Republic of)
Filed on Sep. 13, 2001, as Appl. No. 9/952,684.
Claims priority of provisional application 60/232649, filed on Sep. 14, 2000.
Prior Publication US 2003/0048567 A1, Mar. 13, 2003
Int. Cl. G11B 5/596 (2006.01)
U.S. Cl. 360—77.08 4 Claims
OG exemplary drawing
 
1. A method for positioning a read/write head in a hard disk drive, comprising:
a) providing a disk having at least one side with a plurality of tracks, each of said tracks having a servo field, said servo field having servo bits;
b) reading said servo bits to provide a position signal for positioning a read/write head;
c) determining a magnitude of a difference in position between an initial and a subsequent position of the read/write head on a track, said subsequent location to occur after said read/write head has moved one revolution from said initial position on said track, said initial and subsequent position being offset laterally; and
d) generating a compensation signal based on said initial position, said subsequent position and said difference;
e) combining said position signal and said compensation signal to provide acompensated position signal for positioning said read/write head.