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. 17, 2026
Filed:
May. 13, 2024
Applicant:
Western Digital Technologies Inc., San Jose, CA (US);
Inventor:
Triet Tieu, Milipitas, CA (US);
Assignee:
Western Digital Technologies Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 19/22 (2006.01); G11B 19/20 (2006.01); G11B 19/28 (2006.01);
U.S. Cl.
CPC ...
G11B 19/22 (2013.01); G11B 19/2009 (2013.01); G11B 19/2063 (2013.01); G11B 19/28 (2013.01);
Abstract
A data storage device comprises a disk; a spindle on which the disk is mounted; a spindle motor that rotates the spindle; an actuator arm configured with a recording head; and an actuator that rotates the actuator arm about a pivot to move the actuator arm radially across a disk surface. Control circuitry controls the actuator to move the actuator arm across the disk surface while simultaneously applying an active brake to decelerate the spindle by controlling a driver voltage to be out of phase with a back electromotive force (BEMF) voltage of the spindle motor.