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:
Jan. 04, 2011
Filed:
Feb. 27, 2009
Alexander Babinski, Laguna Niguel, CA (US);
Duc T. Phan, Saratoga, CA (US);
Jun Huang, Lake Forest, CA (US);
Yanbin Song, Irvine, CA (US);
Alexander Babinski, Laguna Niguel, CA (US);
Duc T. Phan, Saratoga, CA (US);
Jun Huang, Lake Forest, CA (US);
Yanbin Song, Irvine, CA (US);
Western Digital Technologies, Inc., Lake Forest, CA (US);
Abstract
A disk drive is disclosed comprising a disk, a head, a voice coil motor (VCM) for actuating the head over the disk, and control circuitry comprising a notch filter for generating a VCM control signal, wherein a notch of the notch filter comprises a frequency, a width, and a depth. The notch filter is calibrated by initializing at least one of the width and the depth of the notch, measuring a quality metric of the notch filter, and increasing at least one of the width and the depth of the notch until the quality metric indicates good performance.