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:
Jun. 12, 2012
Filed:
Jul. 08, 2011
Applicants:
Tatsuya Ninomiya, Odawara, JP;
Kazuo Tanaka, Odawara, JP;
Inventors:
Tatsuya Ninomiya, Odawara, JP;
Kazuo Tanaka, Odawara, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention comprises a CHAwhich transmits/receives data to/from an external device, a DKAwhich transmits/receives data to/from an HDD unit, a primary cache unitwhich has a primary cache memory, a secondary cache unitwhich is installed between the primary cache unitand the DKAand has a secondary cache memory, a CCPwhich stores write target data received by the CHAin the primary cache memory, and a CCPwhich stores the write target data in the secondary cache memory, and transfers the write target data stored in the secondary cache memoryto the DKA