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. 02, 2005
Filed:
Mar. 06, 2002
Applicants:
Kohji Hosokawa, Ohtsu, JP;
Toshio Sunaga, Ohtsu, JP;
Shinpei Watanabe, Yokohama, JP;
Inventors:
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C008/00 ;
U.S. Cl.
CPC ...
Abstract
A DRAM and access method for DRAM with a high data rate in a random row access mode. The DRAM includes a plurality of memory blocks composed of a plurality of storage segments each with a series of main word lines and sub-word lines. Each memory block is decoded into multiple segments and the main word lines are activated to select a predetermined number of sub-word lines. A corner block is provided that contains a plurality of Z-lines for selecting one of the sub-wordlines and a plurality of segment select lines for selecting a specific memory segment by activating a local Z-line.