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:
Jul. 25, 2006
Filed:
Aug. 04, 2003
Akira Yamamoto, Sagamihara, JP;
Shigeo Homma, Odawara, JP;
Yoshihiro Asaka, Hiratsuka, JP;
Yoshiaki Kuwahara, Odawara, JP;
Akira Kurano, Odawara, JP;
Masafumi Nozawa, Odawara, JP;
Hiroyuki Kitajima, Yokohama, JP;
Akira Yamamoto, Sagamihara, JP;
Shigeo Homma, Odawara, JP;
Yoshihiro Asaka, Hiratsuka, JP;
Yoshiaki Kuwahara, Odawara, JP;
Akira Kurano, Odawara, JP;
Masafumi Nozawa, Odawara, JP;
Hiroyuki Kitajima, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In an information processing system having a data processing apparatus, a control unit for a cache memory, and a storage unit for storing a record, respectively interconnected together, wherein when the control unit receives from the data processing apparatus a write request for a record to be written and if the record to be written is not being stored in the cache memory, the control unit receives a data to be written in the object record from the data processing apparatus and stores the received data in the cache memory. After notifying the data processing apparatus of a completion of a data write process, the control unit checks if the object record in which the data stored in the cache memory is being stored in the storage unit, if the object record is being stored in the storage unit, the data in the cache memory is written in the storage unit, and if not, the data in the cache memory is not written and such effect is notified to the data processing apparatus.