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:
Jan. 04, 2011
Filed:
Apr. 12, 2007
Andreas Taeuber, Unterschleissheim, DE;
Detlev Richter, Munich, DE;
Luca DE Ambroggi, Munich, DE;
Konrad Seidel, Dresden, DE;
Robert Petter, Wandlitz, DE;
Marco Ziegelmayer, Freital, DE;
Andreas Taeuber, Unterschleissheim, DE;
Detlev Richter, Munich, DE;
Luca De Ambroggi, Munich, DE;
Konrad Seidel, Dresden, DE;
Robert Petter, Wandlitz, DE;
Marco Ziegelmayer, Freital, DE;
Qimonda AG, Munich, DE;
Abstract
A method for classifying memory cells in an integrated circuit is provided, wherein the integrated circuit has a memory cell field including a plurality of memory cells. The method includes determining, for each subset of the memory cells of a plurality of subsets of the memory cells, a threshold voltage distribution; determining whether the determined threshold voltage distributions fulfill a threshold voltage criterion; and depending on whether the determined threshold voltage distributions fulfill the threshold voltage criterion, classifying at least some of the non-selected memory cells.