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. 17, 2013
Filed:
Mar. 17, 2008
Yasunori Kawamoto, Kanagawa, JP;
Minoru Shimada, Kangawa, JP;
Masahiro Etoh, Kanagawa, JP;
Takuma Ito, Kanagawa, JP;
Yasunori Kawamoto, Kanagawa, JP;
Minoru Shimada, Kangawa, JP;
Masahiro Etoh, Kanagawa, JP;
Takuma Ito, Kanagawa, JP;
HGST Netherlands B.V., Amsterdam, NL;
Abstract
Embodiments of the present invention help to reduce damage of a head element portion or a magnetic disk in a procedure for specifying a heater power value for adjusting a clearance between the head element portion and the magnetic disk. In an embodiment of the present invention, an HDC/MPU sequentially performs data writing and reading while increasing heater power. The HDC/MPU further determines whether or not a head slider has retrieved the data properly. When the data cannot be retrieved properly, the HDC/MPU specifies a heater power value in a normal operation based on the heater power value at which the data could not be retrieved properly.