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:
Dec. 15, 2015
Filed:
Mar. 23, 2015
Western Digital Technologies, Inc., Irvine, CA (US);
Phillip Scott Haralson, Huntington Beach, CA (US);
Western Digital Technologies, Inc., Irvine, CA (US);
Abstract
A data storage device is disclosed comprising a disk comprising a plurality of tracks and a head actuated over the disk, wherein the head comprises a read element radially offset from a write element. A first pattern is written to a single track, and the first pattern is read from the single track to generate a first read signal from which a first quality metric is generated. A second pattern is written to the single track, wherein the second pattern is different from the first pattern. The second pattern is read from the single track to generate a second read signal from which a second quality metric is generated. The radial offset of the read element and write element is measured based on the first and second quality metrics.