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:
Oct. 23, 2018
Filed:
Mar. 22, 2018
Western Digital Technologies, Inc., San Jose, CA (US);
Brian A. Johnson, Laguna Hills, CA (US);
Jaesoo Byoun, Irvine, CA (US);
Western Digital Technologies, Inc., San Jose, CA (US);
Abstract
A data storage device is disclosed comprising a voice coil motor (VCM) configured to actuate a head over a disk. The head is used to read data recorded on the disk to generate a read signal, and the read signal is processed to generate a current command signal at a servo sample rate having a servo sample interval. A current flowing through the VCM is detected, and a current error signal is generated based on a difference between the current command signal and the detected current flowing through the VCM. An analog command signal is generated based on the current error signal, and the analog command signal is applied to the VCM. A saturation in the analog command signal is detected, and a first deglitch window is generated during which the saturation detection is disabled, wherein the first deglitch window is programmed relative to the servo sample interval.