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:
Jun. 12, 2001
Filed:
Jun. 25, 1999
Paul A. Galloway, Prior Lake, MN (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
A method of filtering the actuator driving energy in a disc drive is provided in which the configuration of a digital notch filter is adapted according to which data head is selected. In one embodiment of the invention, digital notch filter constants corresponding to the resonance frequencies of each individual data head are stored in memory. When a particular data head is selected for reading or writing, the digital notch filter constants corresponding to the selected head are retrieved from memory and provided to a digital notch filter, which filters the driving energy according to the retrieved digital notch filter constants. In addition, a disc drive which implements said method of filtering the actuator driving energy is provided.