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. 14, 1999
Filed:
May. 20, 1997
Applicant:
Inventors:
Teruo Shimazu, Atsugi, JP;
Toshiharu Shimizu, Machida, JP;
Yoshihide Majima, Hatano, JP;
Toshimitsu Itoh, Atsugi, JP;
Assignee:
Mitsumi Electric Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360 7303 ; 360 69 ;
Abstract
In a high-density FDD for driving a magnetic disk medium of an FD inserted thereinto, a switch unit 50 detects whether the inserted FD is a large-capacity FD or a small-capacity FD. A control device 60 is connected to the switch unit 50, a control device 60 controls drive of a spindle motor 100 so as to rotate the spindle motor 100 at a high rotation speed when the inserted FD is identified as a large-capacity FD, and so as to rotate the spindle motor 100 at a low rotation speed when the inserted FD is identified as a small-capacity FD.