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:
Nov. 22, 2005
Filed:
Mar. 04, 2003
Applicants:
Kazuhiko Satake, Odawara, JP;
Katsuhiro Tsuneta, Odawara, JP;
Inventors:
Kazuhiko Satake, Odawara, JP;
Katsuhiro Tsuneta, Odawara, JP;
Assignee:
Hitachi Global Storage Technologies Japan, Ltd., Odawara, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B015/18 ;
U.S. Cl.
CPC ...
Abstract
The electromagnetic noise radiated from a magnetic disk system comprising two or more magnetic disk drives is reduced so as not to exceed a certain level although the electromagnetic noise from each magnetic disk drive is added up. This is achieved by setting a different operation clock frequency for each SCSI-ID so that the electromagnetic noise radiated from each magnetic disk drive has a different frequency band.