Glide testing of disks with calibration confirmation testing...

Details Glide testing of disks with calibration confirmation testing... Glide testing of disks with calibration confirmation testing...

2006-06-20

2006-06-20

Tweel, Jr., John (Department: 2636)

Communications: electrical

Condition responsive indicating system

With particular system function

C360S025000, C360S031000, C324S212000

Reexamination Certificate

active

07064659

ABSTRACT:
A method is presented for glide testing a disk which tests the glide head fly-height by inducing a collision between the glide head and a disk under test. The glide test system is initially calibrated using calibration disks. The method of the invention periodically tests the calibration without interrupting the production testing by lowering the rotation rate until the glide head collides with the rotating disk surface. The rotation rate at which the collision occurs is then compared with the value expected based on knowledge of disk samples and the initial calibration. Parameters for acceptable high and low values are established to detect changes in the glide test system performance to trigger automatic or manual recalibration.

REFERENCES:
patent: 4777544 (1988-10-01), Brown et al.
patent: 5237861 (1993-08-01), Suda et al.
patent: 5410439 (1995-04-01), Egbert et al.
patent: 5537034 (1996-07-01), Lewis
patent: 5675462 (1997-10-01), Ayabe
patent: 5901001 (1999-05-01), Meyer et al.
patent: 5952563 (1999-09-01), Shiraki
patent: 6052243 (2000-04-01), Shimada
patent: 6094973 (2000-08-01), Novotny
patent: 6140814 (2000-10-01), Sundaram
patent: 6142006 (2000-11-01), Marchon et al.
patent: 6275029 (2001-08-01), Schaff
patent: 6293135 (2001-09-01), Marchon et al.
patent: 6384995 (2002-05-01), Smith
patent: 6408677 (2002-06-01), Suzuki
patent: 6494085 (2002-12-01), Wakefield et al.
patent: 6567229 (2003-05-01), Mallary et al.
patent: 6568252 (2003-05-01), Boutaghou
patent: 6943969 (2005-09-01), Yokohata
patent: 7006365 (1995-01-01), None
patent: 8045216 (1996-02-01), None
patent: 8114431 (1996-07-01), None

Affiliated with

Also associated with

Rating

Glide testing of disks with calibration confirmation testing... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Glide testing of disks with calibration confirmation testing..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Glide testing of disks with calibration confirmation testing... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3703041