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:
May. 09, 1995
Filed:
Jul. 30, 1992
Applicant:
Inventors:
Ryohei Kumagai, Tokyo, JP;
Weikang Yang, Tokyo, JP;
Assignee:
Ezel Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365222 ; 36523005 ; 365233 ; 3652385 ; 395725 ;
Abstract
A memory control device adaptable to various demands and using a standard DRAM. A memory interface for outputting an address of the memory and controllably reading and writing is connected to the memory. A plurality of input and output ports are connected to the memory interface through a local bus. A host interface is connected to the memory interface through the local bus. A refresh control refreshes the memory through the memory interface. An arbitration structure arbitrates the required access to memory between the refresh control means, the input and output ports and the host interface.