Disk drive decoding binary sequence from phases of servo bursts

Details Disk drive decoding binary sequence from phases of servo bursts Disk drive decoding binary sequence from phases of servo bursts

2011-03-29

2011-03-29

Negrón, Daniell L (Department: 2627)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data in specific format

C360S077080

Reexamination Certificate

active

07916415

ABSTRACT:
A disk drive is disclosed comprising a disk including a plurality of servo tracks defined by a plurality of servo sectors, wherein each servo sector comprises a plurality of servo bursts, and each servo burst comprises at least one of four phases. A first two of the phases are orthogonal, and a second two of the phases are orthogonal. As a head is actuated over the disk a servo sector is read to generate a read signal. The read signal is processed to demodulate the servo bursts into a position error signal (PES) representing an offset of the head from a target radial location on the disk, and the read signal is also processed to decode at least two of the phases of the servo bursts into a binary sequence.

REFERENCES:
patent: 4879612 (1989-11-01), Freeze et al.
patent: 5274510 (1993-12-01), Sugita et al.
patent: 5381281 (1995-01-01), Shrinkle et al.
patent: 5600499 (1997-02-01), Acosta et al.
patent: 5862005 (1999-01-01), Leis et al.
patent: 5903410 (1999-05-01), Blaum et al.
patent: 6049438 (2000-04-01), Serrano et al.
patent: 6141176 (2000-10-01), Blaum et al.
patent: 6243223 (2001-06-01), Elliott et al.
patent: 6288861 (2001-09-01), Blaum et al.
patent: 6452990 (2002-09-01), Leis et al.
patent: 6462898 (2002-10-01), Blaum et al.
patent: 6496312 (2002-12-01), Blaum et al.
patent: 6590729 (2003-07-01), Akagi et al.
patent: 6614609 (2003-09-01), Reed et al.
patent: 6775081 (2004-08-01), Ottesen et al.
patent: 6856480 (2005-02-01), Kuki et al.
patent: 6961203 (2005-11-01), Baker
patent: 7027257 (2006-04-01), Kupferman
patent: 7068461 (2006-06-01), Chue et al.
patent: 7099095 (2006-08-01), Subrahmanyam et al.
patent: 7167329 (2007-01-01), Baker
patent: 7209314 (2007-04-01), Bandic et al.
patent: 7236325 (2007-06-01), Albrecht et al.
patent: 7242546 (2007-07-01), Ooi et al.
patent: 7330321 (2008-02-01), Ashiwa
patent: 7710676 (2010-05-01), Chue
patent: 2003/0035239 (2003-02-01), Ottesen
patent: 2007/0211370 (2007-09-01), Ryu et al.
patent: 2008/0002278 (2008-01-01), Ueda et al.
Cunninham, Quad Burst Servo Needing No Sync ID and Having Added Information, Aug. 1, 1990, IBM Technical Disclosure Bulletin, vol. 33 No. 3B, pp. 198-200.
A. H. Sacks, “Position Signal Generation in Magnetic Disk Drives,” Ph.D. thesis, Carnegie Mellon University, Data Storage Systems Center, Department of Electrical and Computer Engineering, Carnegie Mellon University, Pittsburg, PA, Sep. 5, 1995.
Office Action dated May 18, 2009 from U.S. Appl. No. 12/057,213, 11 pages.
Notice of Allowance dated Jan. 12, 2010 from U.S. Appl. No. 12/057,213, 4 pages.
Office Action dated Sep. 15, 2009 from U.S. Appl. No. 12/057,213, 8 pages.

Affiliated with

Also associated with

Rating

Disk drive decoding binary sequence from phases of servo bursts does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Disk drive decoding binary sequence from phases of servo bursts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Disk drive decoding binary sequence from phases of servo bursts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2702676