The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 06, 1997
Filed:
Feb. 21, 1996
Applicant:
Inventors:
Roger A Hajjar, Fairport, NY (US);
Mark A Barton, Rochester, NY (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369 4432 ; 369 4429 ; 369 4435 ;
Abstract
A method for deriving a track offset signal to be applied to a tracking error signal particularly adapted for use with a disc drive having a servomechanism and actuator for positioning a read or write spot on a track of a disc in response to the tracking error signal is disclosed. The method includes determining a signal representation of the focus height as a function of disc radius, and differentiating the focus height signal to derive a cross-track tilt signal, applying the cross-track tilt signal to a transform which produces a track offset signal.