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:
Sep. 16, 2025
Filed:
Aug. 26, 2024
Western Digital Technologies, Inc., San Jose, CA (US);
Sukumar Rajauria, San Jose, CA (US);
Tan Trinh, San Jose, CA (US);
Western Digital Technologies, Inc., San Jose, CA (US);
Abstract
A Data Storage Device (DSD) includes a disk and a slider. A change in distance between the slider and the disk is determined by applying a first voltage to the slider that increases an electrostatic force between the slider and the disk. The change in distance is approximately the same across a surface of the slider facing the disk. A first power supplied to the heating element is determined that causes thermal expansion of a portion of the slider until making disk contact without applying the first voltage. A second power supplied to the heating element is determined that causes a reduced thermal expansion of the portion until making disk contact while applying the first voltage. A first power setting is calibrated based on a correlation between the determined change in distance and a difference between the first and second powers.