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:
Apr. 22, 2008
Filed:
Jul. 28, 2006
Hideaki Miyamoto, Ogaki, JP;
Shigeharu Matsushita, Katano, JP;
Hideaki Miyamoto, Ogaki, JP;
Shigeharu Matsushita, Katano, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A memory allowing reduction of the period of an external access operation is provided. This memory comprises an access control portion performing an internal access operation on the basis of an external access operation, a refresh control portion performing a refresh operation and a refresh division control portion dividing the refresh operation into a read operation RFRD and rewrite operations RFRSand RFRS. The memory performs the read operation RFRD and the rewrite operations RFRSand RFRSat least either before or after different internal access operations corresponding to different external access operations respectively.