Electrostatic fly-height control

Details Electrostatic fly-height control Electrostatic fly-height control

2006-12-29

2008-11-11

Olson, Jason C (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S294700

Reexamination Certificate

active

07450333

ABSTRACT:
A mechanism for maintaining a constant fly-height of a slider comprises a capacitive fly-height change sensor and an electrostatic fly-height controller. The capacitive fly-height change sensor is configured for coupling with the slider, which is in a head gimbal assembly. The capacitive fly-height change sensor is also configured for measuring a capacitance between the slider and a surface of a disk through the use of a fly-height change sensing signal, and outputting a sensor voltage which is substantially proportional to a sensed change in said capacitance. The electrostatic fly-height controller is coupled with the capacitive fly-height change sensor and configured to couple with the slider. The electrostatic fly-height controller is configured to process the sensor voltage into a fly-height control signal for electrostatically maintaining a constant fly-height of the slider relative to the surface of the disk.

REFERENCES:
patent: 3860918 (1975-01-01), Cencel
patent: 4605977 (1986-08-01), Matthews
patent: 4931887 (1990-06-01), Hegde et al.
patent: 6359746 (2002-03-01), Kakekado et al.
patent: 6366416 (2002-04-01), Meyer et al.
patent: 6529342 (2003-03-01), Feng et al.
patent: 6728050 (2004-04-01), Wilson
patent: 6876509 (2005-04-01), Bonin et al.
patent: 2002/0118483 (2002-08-01), Meyer et al.
patent: 2003/0058571 (2003-03-01), Kisaka
patent: 2003/0169526 (2003-09-01), Minoshima et al.
patent: 2007/0253090 (2007-11-01), Hirano et al.
Carmichael, M. W., et al., “Capacitance Probe”, https://www.delphion.com/tdbs/tdb?order=78A+02063, (May 1977),1.
Klaassen, K B., “Capacitive Servo Detector”, https://www.delphion.com/tdbs/tdb?order=83A+62555, (Nov. 1983),1-3.

Affiliated with

Also associated with

Rating

Electrostatic fly-height control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electrostatic fly-height control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrostatic fly-height control will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4044369