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:
Sep. 17, 2002
Filed:
Jan. 22, 2001
Applicant:
Inventors:
Thomas Böhm, Zorneding, DE;
Georg Braun, München, DE;
Heinz Hönigschmid, East Fishkill, NY (US);
Thomas Röhr, Aschheim, DE;
Assignee:
Infineon Technologies AG, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 7/00 ; G11C 1/122 ;
U.S. Cl.
CPC ...
G11C 7/00 ; G11C 1/122 ;
Abstract
In a semiconductor memory configuration, a refresh operation is always started by a refresh logic circuit when a comparison circuit determines that there is a specific minimum difference when comparing a characteristic variable of at least one reference memory cell with a reference value (VREF).