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. 13, 2015
Filed:
Dec. 17, 2013
Hgst Netherlands B.v., Amsterdam, NL;
Jianhua Li, Kanagawa, JP;
Junguo Xu, Ibaraki, JP;
Toshiya Shiramatsu, Kanagawa, JP;
Takehiro Sato, Kanagawa, JP;
HGST NETHERLANDS B.V., Amsterdam, NL;
Abstract
A method for measuring the head-disk clearance between a slider and a disk includes measuring a first resistance with a first bias applied to an embedded contact sensor of the slider, measuring a second resistance with a second bias applied to the embedded contact sensor of the slider, and determining the head-disk clearance based at least in part on a difference between the first resistance and the second resistance. A system includes a disk drive, a slider comprising an embedded contact sensor, and circuitry to apply at least two bias voltages to the embedded contact sensor, measure at least two resistances of the embedded contact sensor based on the application of the at least two bias voltages, and to determine the head-disk clearance based at least in part on a difference between the at least two resistances.