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:
Mar. 21, 2006
Filed:
Feb. 02, 2004
Kwang-jo Jung, Suwon-si, KR;
Chang-ik Kang, Jelu-si, KR;
Kwang-Jo Jung, Suwon-si, KR;
Chang-ik Kang, Jelu-si, KR;
Samsung Electronics Co., Ltd., Suwon-Si, KR;
Abstract
An apparatus and method for removing mechanical resonance in a disc drive using an adaptive notch filter. Mechanical resonance harmful to a system is removed by a notch filter that adaptively varies the frequency characteristics of the filter with respect to the mechanical resonance frequency existing in the system. The mechanical resonance removing apparatus using an adaptive notch filter comprises an excitation signal generator, which in a predetermined notch filter adjusting mode generates an excitation signal exciting the system and provides the signal to the system, a resonance frequency estimator detecting a resonance frequency component from a responding signal from the system corresponding to the excitation signal, a notch filter coefficient generator determining coefficients of a notch filter corresponding to the resonance frequency component detected by the resonance detection unit and the notch filter applying the coefficients determined by the notch filter coefficient generator, to remove the resonance frequency of the system.