Servo sector format with large lithographic tolerances

Details Servo sector format with large lithographic tolerances Servo sector format with large lithographic tolerances

2008-04-22

2009-08-18

Tzeng, Fred (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

Reexamination Certificate

active

07576942

ABSTRACT:
A method and system determines the position of a transducer head based on permanent servo marks in which the width of the permanent servo marks is greater than the width of the data tracks they are used to identify. The method includes receiving readback signals in response to the permanent servo marks arranged as a number of null bursts and generating position error signals with respect to each null burst. Region based information is extracted based on the position error signals, and the region based information is used in conjunction with the position error signals to generate region-based displacement estimates with respect to each null burst. The region-based estimates are then combined to generate a final displacement estimate that describes the estimated distance between a transducer head and the centerline of a desired data track.

REFERENCES:
patent: 5818659 (1998-10-01), Cheung et al.
patent: 5867341 (1999-02-01), Volz et al.
patent: 6052250 (2000-04-01), Golowka et al.
patent: 6195220 (2001-02-01), Ellis et al.
patent: 6243224 (2001-06-01), Sacks et al.
patent: 6426845 (2002-07-01), Sacks et al.
patent: 6469849 (2002-10-01), Ellis et al.
patent: 6574068 (2003-06-01), Hampshire et al.
patent: 6643082 (2003-11-01), Belser
patent: 7023631 (2006-04-01), Zhang et al.
patent: 7064914 (2006-06-01), Erden et al.
patent: 7161759 (2007-01-01), Zhang et al.
patent: 7265937 (2007-09-01), Erden et al.
patent: 7333290 (2008-02-01), Kupferman
patent: 7408735 (2008-08-01), Coric
patent: 2008/0239548 (2008-10-01), Paul et al.
patent: 2008/0239557 (2008-10-01), Gerasimov

Affiliated with

Also associated with

Rating

Servo sector format with large lithographic tolerances 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 sector format with large lithographic tolerances, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Servo sector format with large lithographic tolerances will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4053549