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. 12, 2023
Filed:
Mar. 24, 2022
Western Digital Technologies, Inc., San Jose, CA (US);
Weldon M. Hanson, Rochester, MN (US);
Alain Chahwan, Irvine, CA (US);
Niranjay Ravindran, Rochester, MN (US);
Western Digital Technologies, Inc., San Jose, CA (US);
Abstract
Various illustrative aspects are directed to a data storage device comprising data tracks N and N−1, and one or more processing devices, configured to measure signal to noise ratio (SNR) metrics for corresponding sectors of at least one of the data tracks N−1 and N, where the measuring is based at least in part on reading one or more of the data tracks N and N−1 using one or more read offsets, estimate a position of at least one of the data tracks based on measuring the one or more SNR metrics, and reconstruct one or more of risk values for at least a portion of the data track N−1 based on the one or more SNR metrics for the data track N−1, and a position error signal (PES) for at least one of the data tracks N−1 and N based on the corresponding estimated positions.