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:
Apr. 06, 1999
Filed:
Sep. 25, 1996
Applicant:
Inventor:
Isao Morita, Hanno, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360 7702 ; 360 7303 ;
Abstract
A CPU instructs a VCM driver, a spindle motor driver and a servo data reading or writing circuit, to writing servo data for error detection at any of default rotation frequencies stored in a memory. A positioning error signal analyzer detects a positioning error from the written servo data for error detection, and CPU determines an optimal disk rotation frequency from this positioning error.