Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data clocking
Reexamination Certificate
2007-05-01
2007-05-01
Dinh, Tan (Department: 2627)
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Data clocking
C360S053000, C360S075000, C360S077020
Reexamination Certificate
active
10769386
ABSTRACT:
A method of writing product servo sectors to a disk of a disk drive is disclosed. A plurality of spiral tracks are written to the disk, wherein each spiral track comprises a high frequency signal interrupted at a predetermined interval by a sync mark. During the product servo writing process, the sync marks in the spiral tracks are detected and a sync mark reliability metric is generated, wherein the sync mark reliability metric represents a probability that the sync mark was detected accurately. A timing recovery measurement is generated in response to the detected sync marks and the sync mark reliability metrics. A servo write clock is synchronized in response to the timing recovery measurement and used to write the product servo sectors to the disk while serving on the spiral tracks.
REFERENCES:
patent: 5430661 (1995-07-01), Fisher et al.
patent: 5576906 (1996-11-01), Fisher et al.
patent: 5583712 (1996-12-01), Brunelle
patent: 5668679 (1997-09-01), Swearingen et al.
patent: 5696639 (1997-12-01), Spurbeck et al.
patent: 5754353 (1998-05-01), Behrens et al.
patent: 5761212 (1998-06-01), Foland et al.
patent: 5831888 (1998-11-01), Glover
patent: 5838512 (1998-11-01), Okazaki
patent: 5917670 (1999-06-01), Scaramuzzo et al.
patent: 6021012 (2000-02-01), Bang
patent: 6023386 (2000-02-01), Reed et al.
patent: 6091564 (2000-07-01), Codilian et al.
patent: 6101229 (2000-08-01), Glover
patent: 6181506 (2001-01-01), Shimura et al.
patent: 6249896 (2001-06-01), Ho et al.
patent: 6272194 (2001-08-01), Sakamoto
patent: 6292318 (2001-09-01), Hayashi
patent: 6304407 (2001-10-01), Baker et al.
patent: 6411452 (2002-06-01), Cloke
patent: 6411453 (2002-06-01), Chainer et al.
patent: 6429989 (2002-08-01), Schultz et al.
patent: 6487032 (2002-11-01), Cloke et al.
patent: 6507450 (2003-01-01), Elliott
patent: 6519107 (2003-02-01), Ehrlich et al.
patent: 6587293 (2003-07-01), Ding et al.
patent: 6603622 (2003-08-01), Christiansen et al.
patent: 6704156 (2004-03-01), Baker et al.
patent: 6738205 (2004-05-01), Moran et al.
patent: 6791777 (2004-09-01), Watanabe et al.
patent: 6882486 (2005-04-01), Kupferman
patent: 6965489 (2005-11-01), Lee et al.
patent: 6967799 (2005-11-01), Lee
patent: 6985316 (2006-01-01), Liikanen et al.
patent: 6987636 (2006-01-01), Chue et al.
patent: 6989954 (2006-01-01), Lee et al.
patent: 7002761 (2006-02-01), Sutardja et al.
patent: 7016134 (2006-03-01), Agarwal et al.
patent: 7023631 (2006-04-01), Zhang et al.
patent: 7068461 (2006-06-01), Chue et al.
patent: 2001/0010604 (2001-08-01), Esumi
patent: 2003/0030929 (2003-02-01), Ozdemir
Dinh Tan
Mercedes Dismery
Sheerin, Esq. Howard H.
Western Digital Technologies Inc.
LandOfFree
Servo writing a disk drive by synchronizing a servo write... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Servo writing a disk drive by synchronizing a servo write..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Servo writing a disk drive by synchronizing a servo write... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3796058