Method and apparatus for self servowriting of tracks of a...

Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C360S077040, C360S078090

Reexamination Certificate

active

06999263

ABSTRACT:
A method is disclosed for defining tracks on a rotating magnetic disk medium of a disk drive. Reference tracks are followed using a servo control loop while writing servo burst patterns defining a first target servo track. The servo control loop includes a two-dimensional digital state compensator having a first input that receives position error signals, a first output that generates control signals for positioning a transducer head, a second output that generates track-following state variables, and a second input that receives processed and stored track-following state variables. The first target track is followed using the servo control loop while servo burst patterns are written, and while the processed and stored track-following state variables corresponding to the servo burst patterns defining the first target track are applied to the second input.

REFERENCES:
patent: 4536809 (1985-08-01), Sidman
patent: 4679103 (1987-07-01), Workman
patent: 4894599 (1990-01-01), Ottesen et al.
patent: 5307330 (1994-04-01), Okamura
patent: 5404253 (1995-04-01), Painter
patent: 5448429 (1995-09-01), Cribbs et al.
patent: 5483439 (1996-01-01), Ono et al.
patent: 5541784 (1996-07-01), Cribbs et al.
patent: 5867342 (1999-02-01), Hattori
patent: 5907447 (1999-05-01), Yarmchuk et al.
patent: 6924961 (2005-08-01), Melkote et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method and apparatus for self servowriting of tracks of a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for self servowriting of tracks of a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for self servowriting of tracks of a... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3625196

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.