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:
Nov. 29, 2005
Filed:
Jan. 10, 2002
Yi-ping Hsin, Burnsville, MN (US);
Samir Mittal, Longmont, CO (US);
John Christopher Morris, Minneapolis, MN (US);
Yi-Ping Hsin, Burnsville, MN (US);
Samir Mittal, Longmont, CO (US);
John Christopher Morris, Minneapolis, MN (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
An equalization filter for counteracting the effects of unwanted resonance modes and noise in the VCM plant. The filter comprises a transfer function derived from a function of the actual VCM plant response and an ideal response, for which the servo controller is designed. The response of the combined equalization filter and the actual VCM plant response substantially adheres to the ideal response. The disc drive includes firmware operable to generate one or more equalization filters for each of one or more heads.