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. 10, 2007
Filed:
Sep. 28, 2005
Shinya Fujioka, Kawasaki, JP;
Yasuyuki Eguchi, Kawasaki, JP;
Atsushi Sukeno, Kawasaki, JP;
Koutoku Sato, Kawasaki, JP;
Shinya Fujioka, Kawasaki, JP;
Yasuyuki Eguchi, Kawasaki, JP;
Atsushi Sukeno, Kawasaki, JP;
Koutoku Sato, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A refresh operation at a memory cell array for keeping data stored in memory cells is enabled to be switched whether to be executed based on an external refresh request inputted from external or an internal refresh request generated internally by a refresh control unit, and therefore, when the refresh operation is executed based on the external refresh request, it becomes possible to execute an access operation for the memory cell array in accordance with an access request from external only with a necessary time for executing the operation in accordance with the access request without including a necessary time for executing the refresh operation.