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:
Feb. 28, 2012
Filed:
Sep. 18, 2009
Kazushi Tsuwako, Tokyo, JP;
Yuusuke Matsuda, Nagano, JP;
Masashi Murai, Kanagawa, JP;
Toshiya Shiramatsu, Kanagawa, JP;
Kazushi Tsuwako, Tokyo, JP;
Yuusuke Matsuda, Nagano, JP;
Masashi Murai, Kanagawa, JP;
Toshiya Shiramatsu, Kanagawa, JP;
Hitachi Global Storgae Technologies, Netherlands B.V., Amsterdam, NL;
Abstract
A disk drive. The disk drive includes a disk configured to store data, a motor configured to rotate the disk, a head-slider and a controller. The head-slider includes a slider configured to fly in proximity to a recording surface of the disk, and an element on the slider. The controller is configured to measure a fly height between the head-slider and the disk at different common-mode voltages of the element to determine an operational common-mode voltage from a measurement result.