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. 05, 2016
Filed:
Feb. 18, 2015
Applicant:
SK Hynix Inc., Icheon, KR;
Inventor:
Sang Oh Lim, Icheon, KR;
Assignee:
SK HYNIX INC., Icheon, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/34 (2006.01); G11C 11/56 (2006.01); G11C 16/14 (2006.01);
U.S. Cl.
CPC ...
G11C 11/5642 (2013.01); G11C 16/14 (2013.01);
Abstract
A method includes performing a pre-reading on memory cells selected from a plurality of memory cells according to a pre-read voltage and determining whether the selected memory cells each are read as a first logical value or a second logical value, comparing a number of memory cells read as the first logical value among the selected memory cells with a predetermined number, and when the number of selected memory cells read as the first logical value is smaller than the predetermined number, performing a first main reading of the selected memory cells, the first main reading adapted to read a memory cell that stores multiple bits.