Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2005-09-20
2005-09-20
Sniezek, Andrew L. (Department: 2651)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
C360S025000, C324S210000
Reexamination Certificate
active
06947242
ABSTRACT:
Disclosed is an apparatus and method for dynamic fly height and roll adjustment of a physical asperity sensor (PAS) head. The PAS head is used to test disk asperity heights and mechanical interference (commonly known as glide height and take off height). The PAS may be adjusted through a pivoting device such as a joystick coupled through one or more actuators to the pivoting device by actuator arms. In one embodiment, the actuator is a piezoelectric motor. The PAS head may utilize a detector to indicate the distance of the disk asperity from the PAS head. The method comprises receiving the signal and in response, operating the actuators to adjust the position of the pivoting device to obtain a selected positioning of either the fly height or the roll of the PAS.
REFERENCES:
patent: 4902971 (1990-02-01), Guzik et al.
patent: 5313352 (1994-05-01), Chikazawa et al.
patent: 5339702 (1994-08-01), Viches
patent: 5423207 (1995-06-01), Flechsig et al.
patent: 5491413 (1996-02-01), Guzik
patent: 5689057 (1997-11-01), Baumgart et al.
patent: 5801531 (1998-09-01), Viches et al.
patent: 5825180 (1998-10-01), Guzik
patent: 5936807 (1999-08-01), Fukawa et al.
patent: 5986451 (1999-11-01), Kagan
patent: 6178157 (2001-01-01), Berg et al.
patent: 6568252 (2003-05-01), Boutaghou
patent: 6611401 (2003-08-01), Burga et al.
patent: 6667844 (2003-12-01), Yao et al.
patent: 6707646 (2004-03-01), Berger et al.
patent: 2003/0086197 (2003-05-01), Baumgartner et al.
patent: 62-21084 (1987-01-01), None
patent: 1-98101 (1989-04-01), None
patent: 3-212808 (1991-09-01), None
patent: 5-135359 (1993-06-01), None
patent: 5-197951 (1993-08-01), None
patent: 6-309636 (1994-11-01), None
“Improved Glide Test of Thin Film Disks Using a BIMORPH Piezoelectric Transducer, Small Glide Head”, IBM Technical Disclosure Bulletin, vol. 36 No. 11, Nov. 1993, pp. 265-267.
“Device for Dynamically Altering Slider Flying Height”, IBM Technical Bulletin, vol. 34 No. 5, Oct. 1991, pp. 400-401.
“One Step Burnish Mapping”, Research Disclosure, 33857, Jun. 1992.
“Method to Control Glider Head Flyheight vs Radius Profile”, Research Disclosure, Nov. 1990, No. 319.
“Closed Loop Optimal Tandem Burnish/Glide Process with Variable Load”, Research Disclosure, Nov. 1988, No. 295.
Hillman Wesley LeRoy
Mello Tony
Mendel Carl Robert
Nayak Ullal Vasant
Robinson Bob C.
Hitachi Global Storage Technologies - Netherlands B.V.
Kunzler & Associates
Sniezek Andrew L.
LandOfFree
Apparatus and method for dynamic fly height adjustment does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for dynamic fly height adjustment, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for dynamic fly height adjustment will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3394074