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:
Aug. 15, 2006
Filed:
Mar. 06, 2002
Toshio Sunaga, Ohtsu, JP;
Shinpei Watanabe, Yokohama, JP;
Toshio Sunaga, Ohtsu, JP;
Shinpei Watanabe, Yokohama, JP;
International Business Machines Corporation, Armonk, NY (US);
Abstract
To provide a DRAM that reduces access latency during refresh and performs refresh for any non-accessed bank in parallel with normal memory accesses. Furthermore, the DRAM allows access to a bank that is undergoing refresh. The DRAM includes a circuit for directing refresh execution by comparing bank address of both access and refresh operations, a circuit for specifying a bank address of the memory cells to be refreshed, a circuit for addressing a row address of the memory cells to be refreshed in the specified bank, a means for refreshing the memory cells, and a means for accessing the memory cells directly after refresh without denying the access request.