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:
Jan. 04, 2000
Filed:
Jun. 13, 1997
Applicant:
Inventor:
Hiroaki Wakamatsu, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360 69 ; 360 9702 ;
Abstract
A disk unit includes a mechanism which rotates a disk, a head which writes data to and/or reads data from the disk, a detection mechanism which detects an operating environment of the disk unit and outputs a detection signal, and a control unit which controls a floating distance of the head from the disk to more than a predetermined value by controlling the rotation mechanism and varying a rotational speed of the disk from a rated rotational speed if the detection signal falls outside a first range.