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:
Dec. 13, 2011
Filed:
May. 12, 2010
Mihoko Tojo, Kawasaki, JP;
Hidefumi Kobayashi, Kawasaki, JP;
Yusuke Oota, Kawasaki, JP;
Satoshi Hayashi, Kawasaki, JP;
Keiichi Umezawa, Kahoku, JP;
Mihoko Tojo, Kawasaki, JP;
Hidefumi Kobayashi, Kawasaki, JP;
Yusuke Oota, Kawasaki, JP;
Satoshi Hayashi, Kawasaki, JP;
Keiichi Umezawa, Kahoku, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An apparatus includes a cache memory for storing user data and control information of the apparatus, a nonvolatile memory and a processor for executing a process including when the power failure occurs, saving the user data and the control information stored in the cache memory into the nonvolatile memory, when the power failure recovers, restoring the data stored in the nonvolatile memory into the cache memory, and erasing the data stored in the nonvolatile memory after restoring the data into the cache memory and when another power failure occurs during erasing the data stored in the nonvolatile memory, erasing the control information stored in the nonvolatile memory if the control information is remained in the nonvolatile memory and saving, into the nonvolatile memory, the updated control information stored in the cache memory and the user data which has been erased from the nonvolatile memory.