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:
Jul. 08, 2025
Filed:
Mar. 05, 2024
Western Digital Technologies, Inc., San Jose, CA (US);
Richard Conway, San Jose, CA (US);
Guoxiao Guo, Irvine, CA (US);
Yanning Liu, San Jose, CA (US);
Joey M. Poss, Rochester, MN (US);
Ryan Mayo, Aliso Viejo, CA (US);
Scott A. Ottele, Longmont, CO (US);
Charles A. Park, Aromas, CA (US);
Western Digital Technologies, Inc., San Jose, CA (US);
Abstract
Example control circuitry, data storage devices, and methods for parallel self-servo write in a data storage device are described. The data storage device may include multiple heads actuated over different surfaces of a data storage device and receive read signals from two different heads over two different surfaces in parallel. Position error signals may be determined from each read signal and corresponding position compensation values may be determined for their respective microactuators. Application of these compensation values may maintain their relative positions for parallel writing of servo tracks based on their respective spiral reference patterns and TPI settings.