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. 28, 2004
Filed:
Mar. 05, 2002
Applicant:
Inventors:
Hiroaki Suzuki, Tokyo, JP;
Hideo Asano, Tokyo, JP;
Yumi Nagano, Kanagawa-ken, JP;
Michio Nakajima, Kanagawa-ken, JP;
Masaomi Ikeda, Rochester, MN (US);
Masashi Murai, Kanagawa-ken, JP;
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/02 ;
U.S. Cl.
CPC ...
G11B 5/02 ;
Abstract
A method for controlling write current to a write head during data write on a hard disk drive is disclosed. A direct access storage device includes a rotating storage medium in which data are magnetically written, a write head for writing data in the rotating storage medium, and a write current control circuit for changing write current-value settings to be supplied to the write head according to a predetermined elapsed time from the beginning of a write operation.