Fractional-rate feedforward RRO compensator

Details Fractional-rate feedforward RRO compensator Fractional-rate feedforward RRO compensator

2005-10-18

2005-10-18

Sniezek, Andrew L. (Department: 2651)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S077080

Reexamination Certificate

active

06956711

ABSTRACT:
An apparatus and method of tracking repeatable runout in a disc drive servo loop is provided in which a feedforward signal having harmonic components that are updated at a sample rate that is a fraction of a servo sector sample rate is employed during track following.

REFERENCES:
patent: 5854722 (1998-12-01), Cunningham et al.
patent: 5949605 (1999-09-01), Lee et al.
patent: 6002540 (1999-12-01), Cunningham et al.
patent: 6437936 (2002-08-01), Chen et al.
patent: 6504668 (2003-01-01), Takeuchi et al.
patent: 2001/0043427 (2001-11-01), Chen et al.
patent: 2002/0039248 (2002-04-01), Liu et al.
patent: 2003/0016607 (2003-01-01), Cho et al.
patent: 2003/0112544 (2003-06-01), Harmer et al.
patent: 2003/0112545 (2003-06-01), Hanson et al.
patent: 2003/0112546 (2003-06-01), Hanson et al.
patent: 0640956 (2000-07-01), None
patent: WO 01/08139 (2001-02-01), None

Affiliated with

Also associated with

Rating

Fractional-rate feedforward RRO compensator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fractional-rate feedforward RRO compensator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fractional-rate feedforward RRO compensator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3446162