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:
Mar. 05, 1996
Filed:
Jul. 08, 1992
Applicant:
Inventor:
Masatoshi Kakuda, Kanagawa, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360 7303 ; 360 7302 ; 364 47 ; 364 50 ;
Abstract
A disk drive array system includes a plurality of disk drives. Each disk drive includes a period detector for monitoring the period of a common external synchronizing signal. When the period detector determines the existence of an irregularity in the external synchronizing signal, an internal synchronizing signal, generated by an internal generator, is used for controlling the rotation of each of the disks so as to continue the operation of the disks.