Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2007-01-02
2007-01-02
Tzeng, Fred F. (Department: 2627)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
Reexamination Certificate
active
11245644
ABSTRACT:
The present invention is a method and apparatus for positioning a read/write head in a hard disk drive. The method comprises providing a disk having a at least one side with a plurality of tracks, where each of the tracks has a servo field with servo bits. The servo bits are read to provide a position signal for positioning a read/write head. The method determines a difference in position between an initial and a subsequent position of the read/write head on a track, where the subsequent location occurs after the read/write head has moved one revolution from the initial position on the track. The initial and subsequent positions are offset laterally. The method generates a compensation signal based on the initial position, the subsequent position and the difference. The position signal and the compensation signal are combined to provide a compensated position signal for positioning the read/write head. Various embodiments are described.
REFERENCES:
patent: 3834392 (1974-09-01), Lampman et al.
patent: 4343300 (1982-08-01), Hattori
patent: 4499895 (1985-02-01), Takayama
patent: 4572198 (1986-02-01), Codrington
patent: 4573452 (1986-03-01), Greenberg
patent: 4601705 (1986-07-01), McCoy
patent: 4621618 (1986-11-01), Omagari
patent: 4633304 (1986-12-01), Nagasaki
patent: 4672963 (1987-06-01), Barken
patent: 4758222 (1988-07-01), McCoy
patent: 4785806 (1988-11-01), Deckelbaum
patent: 4788975 (1988-12-01), Shturman et al.
patent: 4790813 (1988-12-01), Kensey
patent: 4875897 (1989-10-01), Lee
patent: 4887605 (1989-12-01), Angelsen et al.
patent: 4974607 (1990-12-01), Miwa
patent: 4996975 (1991-03-01), Nakamura
patent: 5078714 (1992-01-01), Katims
patent: 5104392 (1992-04-01), Kittrell et al.
patent: 5125888 (1992-06-01), Howard et al.
patent: 5170299 (1992-12-01), Moon
patent: 5203781 (1993-04-01), Bonati et al.
patent: 5217001 (1993-06-01), Nakao et al.
patent: 5217003 (1993-06-01), Wilk
patent: 5217453 (1993-06-01), Wilk
patent: 5228429 (1993-07-01), Hatano
patent: 5233482 (1993-08-01), Galbraith et al.
patent: 5259365 (1993-11-01), Nishikori et al.
patent: 5268803 (1993-12-01), Sugita et al.
patent: 5274510 (1993-12-01), Sugita et al.
patent: 5293276 (1994-03-01), Dunn
patent: 5301080 (1994-04-01), Ottesen et al.
patent: 5335121 (1994-08-01), Bombeeck
patent: 5335123 (1994-08-01), Shimizu et al.
patent: 5367409 (1994-11-01), Ottesen et al.
patent: 5368015 (1994-11-01), Wilk
patent: 5384671 (1995-01-01), Fisher
patent: 5388127 (1995-02-01), Scarpa
patent: 5402280 (1995-03-01), Supino
patent: 5483393 (1996-01-01), Mento et al.
patent: 5497111 (1996-03-01), Cunningham
patent: 5517371 (1996-05-01), Takei
patent: 5523899 (1996-06-01), Parken et al.
patent: 5539714 (1996-07-01), Andrews, Jr. et al.
patent: 5566101 (1996-10-01), Kodra
patent: 5581420 (1996-12-01), Chainer et al.
patent: 5590154 (1996-12-01), Forni et al.
patent: 5606469 (1997-02-01), Kosugi et al.
patent: 5608587 (1997-03-01), Smith
patent: 5615058 (1997-03-01), Chainer et al.
patent: 5617264 (1997-04-01), Taguchi et al.
patent: 5781133 (1998-07-01), Tsang
patent: 5796543 (1998-08-01), Ton-That
patent: 5822143 (1998-10-01), Cloke et al.
patent: 5844920 (1998-12-01), Zook et al.
patent: 5862007 (1999-01-01), Pham et al.
patent: 5898532 (1999-04-01), Du et al.
patent: 5961658 (1999-10-01), Reed et al.
patent: 6094316 (2000-07-01), Pham et al.
patent: 6157510 (2000-12-01), Schreck et al.
patent: 6266205 (2001-07-01), Schreck et al.
patent: 6310742 (2001-10-01), Nazarian et al.
patent: 6385000 (2002-05-01), Ottesen et al.
patent: 6519107 (2003-02-01), Ehrlich et al.
patent: 6646823 (2003-11-01), Brunnett
patent: 6674589 (2004-01-01), Min et al.
patent: 6728061 (2004-04-01), Takaishi
patent: 6999267 (2006-02-01), Melkote et al.
Choi Soo Il
Chu Sang Hoon
Lee Kang Seok
Nguyen Tung
Shim Jun Seok
Irell & Manella LLP
Samsung Electronics Co,. Ltd.
Tzeng Fred F.
Yorks Ben J.
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