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:
May. 29, 2007
Filed:
Jan. 31, 2004
Disk drive employing a calibrated brake pulse to reduce acoustic noise when latching an actuator arm
Gokhan Orakcilar, Irvine, CA (US);
Steven Nemshick, Santa Ana, CA (US);
Ashok K. Desai, Westlake Village, CA (US);
Robert P. Ryan, Mission Viejo, CA (US);
Dean V. Dang, Fountain Valley, CA (US);
Lakshman Rathnam, Mountain View, CA (US);
Thomas A. Tacklind, San Martin, CA (US);
Gokhan Orakcilar, Irvine, CA (US);
Steven Nemshick, Santa Ana, CA (US);
Ashok K. Desai, Westlake Village, CA (US);
Robert P. Ryan, Mission Viejo, CA (US);
Dean V. Dang, Fountain Valley, CA (US);
Lakshman Rathnam, Mountain View, CA (US);
Thomas A. Tacklind, San Martin, CA (US);
Western Digital Technologies, Inc., Lake Forest, CA (US);
Abstract
A disk drive is disclosed comprising a disk and a voice coil motor (VCM) for rotating an actuator arm about a pivot in order to actuate a head over the disk. During a park operation, a latching characteristic associated with latching the actuator arm is measured and used to configure a latching parameter that reduces acoustic noise. The latching parameter is used to latch the actuator arm by seeking the head to a latching track, maintaining the head over the latching track for a predetermined interval, applying an acceleration pulse to the VCM for an acceleration pulse period, applying a braking pulse to the VCM for a brake pulse period, and applying a latching current to the VCM.