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:
Sep. 06, 2005
Filed:
Feb. 10, 2004
David Berman, San Jose, CA (US);
Nhan Xuan Bui, Tucson, AZ (US);
Michael Constantin Melas, Los Gatos, CA (US);
Mark Allan Taylor, Tucson, AZ (US);
David Berman, San Jose, CA (US);
Nhan Xuan Bui, Tucson, AZ (US);
Michael Constantin Melas, Los Gatos, CA (US);
Mark Allan Taylor, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Disclosed are a system, a method, and article of manufacture to provide for filtering a servo signal in a tape drive using a matched filter that is optimized for the operating tape velocity of the tape drive. A servo controller for track following on a tape uses a digital filter implementation of the matched filter to produce a filtered servo signal. The digital filter is optimized for different tape velocities by selecting digital filter coefficients for the digital filter that depend upon the tape velocity presently in use. The filtered servo signal is used by the servo controller to provide improved track following in a tape drive.