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:
May. 27, 2003
Filed:
Dec. 27, 1999
Applicant:
Inventors:
Hiroshi Kurokawa, Hadano, JP;
Shinichi Mihashi, Hadano, JP;
Hiroshi Yamada, Kawasaki, JP;
Toshiaki Kawamura, Hadano, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/116 ;
U.S. Cl.
CPC ...
G06F 1/116 ;
Abstract
Duplicate data are stored in separate storage units SU( ) and SU( ) , respectively. The storage area in each of SU( ) and SU( ) is divided into master storage regions and sub storage regions each of which is allocated alternately to the storage units in increments of fixed addresses. The store request is issued to both of the storage units allocated the master storage region and the sub storage region, and the fetch request is issued to one of the storage units allocated the master storage region from the RSC( ) and RSC( )