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. 27, 2026
Filed:
Mar. 25, 2025
Western Digital Technologies, Inc., San Jose, CA (US);
Joey M. Poss, Rochester, MN (US);
Sukumar Rajauria, San Jose, CA (US);
John T. Contreras, Palo Alto, CA (US);
Western Digital Technologies, Inc., San Jose, CA (US);
Abstract
A data storage device configured for heat assisted magnetic recording (HAMR) may include a disk; a head configured to read/write data to the disk; a laser module comprising a laser diode to heat an area of the disk near the head, and a heater to heat the LD; and one or more processing devices configured to determine a target laser voltage (LV) value for the LD; drive, using an LD driver, the LD, based on the target LV value; determine a temperature adjustment value for the LD; and drive, using a heater driver, the heater to adjust one or more of a LV value and a temperature of the LD, based on the temperature adjustment value. In some embodiments, the one or more processing devices are configured to independently control the LD and heater drivers for a plurality of compensation phases.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile